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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/lib
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/sparc/lib')
-rw-r--r--arch/sparc/lib/COPYING.LIB481
-rw-r--r--arch/sparc/lib/Makefile13
-rw-r--r--arch/sparc/lib/ashldi3.S34
-rw-r--r--arch/sparc/lib/ashrdi3.S36
-rw-r--r--arch/sparc/lib/atomic.S100
-rw-r--r--arch/sparc/lib/atomic32.c53
-rw-r--r--arch/sparc/lib/bitext.c132
-rw-r--r--arch/sparc/lib/bitops.S110
-rw-r--r--arch/sparc/lib/blockops.S89
-rw-r--r--arch/sparc/lib/checksum.S583
-rw-r--r--arch/sparc/lib/copy_user.S492
-rw-r--r--arch/sparc/lib/debuglocks.c202
-rw-r--r--arch/sparc/lib/divdi3.S295
-rw-r--r--arch/sparc/lib/locks.S72
-rw-r--r--arch/sparc/lib/lshrdi3.S27
-rw-r--r--arch/sparc/lib/memcmp.S312
-rw-r--r--arch/sparc/lib/memcpy.S1150
-rw-r--r--arch/sparc/lib/memscan.S133
-rw-r--r--arch/sparc/lib/memset.S203
-rw-r--r--arch/sparc/lib/mul.S135
-rw-r--r--arch/sparc/lib/muldi3.S76
-rw-r--r--arch/sparc/lib/rem.S382
-rw-r--r--arch/sparc/lib/rwsem.S205
-rw-r--r--arch/sparc/lib/sdiv.S379
-rw-r--r--arch/sparc/lib/strlen.S81
-rw-r--r--arch/sparc/lib/strlen_user.S109
-rw-r--r--arch/sparc/lib/strncmp.S118
-rw-r--r--arch/sparc/lib/strncpy_from_user.S47
-rw-r--r--arch/sparc/lib/udiv.S355
-rw-r--r--arch/sparc/lib/udivdi3.S258
-rw-r--r--arch/sparc/lib/umul.S169
-rw-r--r--arch/sparc/lib/urem.S355
32 files changed, 7186 insertions, 0 deletions
diff --git a/arch/sparc/lib/COPYING.LIB b/arch/sparc/lib/COPYING.LIB
new file mode 100644
index 000000000000..eb685a5ec981
--- /dev/null
+++ b/arch/sparc/lib/COPYING.LIB
@@ -0,0 +1,481 @@
1 GNU LIBRARY GENERAL PUBLIC LICENSE
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478 <signature of Ty Coon>, 1 April 1990
479 Ty Coon, President of Vice
480
481That's all there is to it!
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
new file mode 100644
index 000000000000..2296ff9dc47a
--- /dev/null
+++ b/arch/sparc/lib/Makefile
@@ -0,0 +1,13 @@
1# $Id: Makefile,v 1.35 2000/12/15 00:41:18 davem Exp $
2# Makefile for Sparc library files..
3#
4
5EXTRA_AFLAGS := -ansi -DST_DIV0=0x02
6
7lib-y := mul.o rem.o sdiv.o udiv.o umul.o urem.o ashrdi3.o memcpy.o memset.o \
8 strlen.o checksum.o blockops.o memscan.o memcmp.o strncmp.o \
9 strncpy_from_user.o divdi3.o udivdi3.o strlen_user.o \
10 copy_user.o locks.o atomic.o atomic32.o bitops.o \
11 lshrdi3.o ashldi3.o rwsem.o muldi3.o bitext.o
12
13lib-$(CONFIG_DEBUG_SPINLOCK) += debuglocks.o
diff --git a/arch/sparc/lib/ashldi3.S b/arch/sparc/lib/ashldi3.S
new file mode 100644
index 000000000000..52418a0cb3dd
--- /dev/null
+++ b/arch/sparc/lib/ashldi3.S
@@ -0,0 +1,34 @@
1/* $Id: ashldi3.S,v 1.2 1999/11/19 04:11:46 davem Exp $
2 * ashldi3.S: GCC emits these for certain drivers playing
3 * with long longs.
4 *
5 * Copyright (C) 1999 David S. Miller (davem@redhat.com)
6 */
7
8 .text
9 .align 4
10 .globl __ashldi3
11__ashldi3:
12 cmp %o2, 0
13 be 9f
14 mov 0x20, %g2
15
16 sub %g2, %o2, %g2
17 cmp %g2, 0
18 bg 7f
19 sll %o0, %o2, %g3
20
21 neg %g2
22 clr %o5
23 b 8f
24 sll %o1, %g2, %o4
257:
26 srl %o1, %g2, %g2
27 sll %o1, %o2, %o5
28 or %g3, %g2, %o4
298:
30 mov %o4, %o0
31 mov %o5, %o1
329:
33 retl
34 nop
diff --git a/arch/sparc/lib/ashrdi3.S b/arch/sparc/lib/ashrdi3.S
new file mode 100644
index 000000000000..2848237598a4
--- /dev/null
+++ b/arch/sparc/lib/ashrdi3.S
@@ -0,0 +1,36 @@
1/* $Id: ashrdi3.S,v 1.4 1999/11/19 04:11:49 davem Exp $
2 * ashrdi3.S: The filesystem code creates all kinds of references to
3 * this little routine on the sparc with gcc.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8 .text
9 .align 4
10 .globl __ashrdi3
11__ashrdi3:
12 tst %o2
13 be 3f
14 or %g0, 32, %g2
15
16 sub %g2, %o2, %g2
17
18 tst %g2
19 bg 1f
20 sra %o0, %o2, %o4
21
22 sra %o0, 31, %o4
23 sub %g0, %g2, %g2
24 ba 2f
25 sra %o0, %g2, %o5
26
271:
28 sll %o0, %g2, %g3
29 srl %o1, %o2, %g2
30 or %g2, %g3, %o5
312:
32 or %g0, %o4, %o0
33 or %g0, %o5, %o1
343:
35 jmpl %o7 + 8, %g0
36 nop
diff --git a/arch/sparc/lib/atomic.S b/arch/sparc/lib/atomic.S
new file mode 100644
index 000000000000..f48ad0c4dadb
--- /dev/null
+++ b/arch/sparc/lib/atomic.S
@@ -0,0 +1,100 @@
1/* atomic.S: Move this stuff here for better ICACHE hit rates.
2 *
3 * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
4 */
5
6#include <linux/config.h>
7#include <asm/ptrace.h>
8#include <asm/psr.h>
9
10 .text
11 .align 4
12
13 .globl __atomic_begin
14__atomic_begin:
15
16#ifndef CONFIG_SMP
17 .globl ___xchg32_sun4c
18___xchg32_sun4c:
19 rd %psr, %g3
20 andcc %g3, PSR_PIL, %g0
21 bne 1f
22 nop
23 wr %g3, PSR_PIL, %psr
24 nop; nop; nop
251:
26 andcc %g3, PSR_PIL, %g0
27 ld [%g1], %g7
28 bne 1f
29 st %g2, [%g1]
30 wr %g3, 0x0, %psr
31 nop; nop; nop
321:
33 mov %g7, %g2
34 jmpl %o7 + 8, %g0
35 mov %g4, %o7
36
37 .globl ___xchg32_sun4md
38___xchg32_sun4md:
39 swap [%g1], %g2
40 jmpl %o7 + 8, %g0
41 mov %g4, %o7
42#endif
43
44 /* Read asm-sparc/atomic.h carefully to understand how this works for SMP.
45 * Really, some things here for SMP are overly clever, go read the header.
46 */
47 .globl ___atomic24_add
48___atomic24_add:
49 rd %psr, %g3 ! Keep the code small, old way was stupid
50 nop; nop; nop; ! Let the bits set
51 or %g3, PSR_PIL, %g7 ! Disable interrupts
52 wr %g7, 0x0, %psr ! Set %psr
53 nop; nop; nop; ! Let the bits set
54#ifdef CONFIG_SMP
551: ldstub [%g1 + 3], %g7 ! Spin on the byte lock for SMP.
56 orcc %g7, 0x0, %g0 ! Did we get it?
57 bne 1b ! Nope...
58 ld [%g1], %g7 ! Load locked atomic24_t
59 sra %g7, 8, %g7 ! Get signed 24-bit integer
60 add %g7, %g2, %g2 ! Add in argument
61 sll %g2, 8, %g7 ! Transpose back to atomic24_t
62 st %g7, [%g1] ! Clever: This releases the lock as well.
63#else
64 ld [%g1], %g7 ! Load locked atomic24_t
65 add %g7, %g2, %g2 ! Add in argument
66 st %g2, [%g1] ! Store it back
67#endif
68 wr %g3, 0x0, %psr ! Restore original PSR_PIL
69 nop; nop; nop; ! Let the bits set
70 jmpl %o7, %g0 ! NOTE: not + 8, see callers in atomic.h
71 mov %g4, %o7 ! Restore %o7
72
73 .globl ___atomic24_sub
74___atomic24_sub:
75 rd %psr, %g3 ! Keep the code small, old way was stupid
76 nop; nop; nop; ! Let the bits set
77 or %g3, PSR_PIL, %g7 ! Disable interrupts
78 wr %g7, 0x0, %psr ! Set %psr
79 nop; nop; nop; ! Let the bits set
80#ifdef CONFIG_SMP
811: ldstub [%g1 + 3], %g7 ! Spin on the byte lock for SMP.
82 orcc %g7, 0x0, %g0 ! Did we get it?
83 bne 1b ! Nope...
84 ld [%g1], %g7 ! Load locked atomic24_t
85 sra %g7, 8, %g7 ! Get signed 24-bit integer
86 sub %g7, %g2, %g2 ! Subtract argument
87 sll %g2, 8, %g7 ! Transpose back to atomic24_t
88 st %g7, [%g1] ! Clever: This releases the lock as well
89#else
90 ld [%g1], %g7 ! Load locked atomic24_t
91 sub %g7, %g2, %g2 ! Subtract argument
92 st %g2, [%g1] ! Store it back
93#endif
94 wr %g3, 0x0, %psr ! Restore original PSR_PIL
95 nop; nop; nop; ! Let the bits set
96 jmpl %o7, %g0 ! NOTE: not + 8, see callers in atomic.h
97 mov %g4, %o7 ! Restore %o7
98
99 .globl __atomic_end
100__atomic_end:
diff --git a/arch/sparc/lib/atomic32.c b/arch/sparc/lib/atomic32.c
new file mode 100644
index 000000000000..19724c5800a7
--- /dev/null
+++ b/arch/sparc/lib/atomic32.c
@@ -0,0 +1,53 @@
1/*
2 * atomic32.c: 32-bit atomic_t implementation
3 *
4 * Copyright (C) 2004 Keith M Wesolowski
5 *
6 * Based on asm-parisc/atomic.h Copyright (C) 2000 Philipp Rumpf
7 */
8
9#include <asm/atomic.h>
10#include <linux/spinlock.h>
11#include <linux/module.h>
12
13#ifdef CONFIG_SMP
14#define ATOMIC_HASH_SIZE 4
15#define ATOMIC_HASH(a) (&__atomic_hash[(((unsigned long)a)>>8) & (ATOMIC_HASH_SIZE-1)])
16
17spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] = {
18 [0 ... (ATOMIC_HASH_SIZE-1)] = SPIN_LOCK_UNLOCKED
19};
20
21#else /* SMP */
22
23static spinlock_t dummy = SPIN_LOCK_UNLOCKED;
24#define ATOMIC_HASH_SIZE 1
25#define ATOMIC_HASH(a) (&dummy)
26
27#endif /* SMP */
28
29int __atomic_add_return(int i, atomic_t *v)
30{
31 int ret;
32 unsigned long flags;
33 spin_lock_irqsave(ATOMIC_HASH(v), flags);
34
35 ret = (v->counter += i);
36
37 spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
38 return ret;
39}
40
41void atomic_set(atomic_t *v, int i)
42{
43 unsigned long flags;
44 spin_lock_irqsave(ATOMIC_HASH(v), flags);
45
46 v->counter = i;
47
48 spin_unlock_irqrestore(ATOMIC_HASH(v), flags);
49}
50
51EXPORT_SYMBOL(__atomic_add_return);
52EXPORT_SYMBOL(atomic_set);
53
diff --git a/arch/sparc/lib/bitext.c b/arch/sparc/lib/bitext.c
new file mode 100644
index 000000000000..94b05e8c906c
--- /dev/null
+++ b/arch/sparc/lib/bitext.c
@@ -0,0 +1,132 @@
1/*
2 * bitext.c: kernel little helper (of bit shuffling variety).
3 *
4 * Copyright (C) 2002 Pete Zaitcev <zaitcev@yahoo.com>
5 *
6 * The algorithm to search a zero bit string is geared towards its application.
7 * We expect a couple of fixed sizes of requests, so a rotating counter, reset
8 * by align size, should provide fast enough search while maintaining low
9 * fragmentation.
10 */
11
12#include <linux/smp_lock.h>
13#include <linux/bitops.h>
14
15#include <asm/bitext.h>
16
17/**
18 * bit_map_string_get - find and set a bit string in bit map.
19 * @t: the bit map.
20 * @len: requested string length
21 * @align: requested alignment
22 *
23 * Returns offset in the map or -1 if out of space.
24 *
25 * Not safe to call from an interrupt (uses spin_lock).
26 */
27int bit_map_string_get(struct bit_map *t, int len, int align)
28{
29 int offset, count; /* siamese twins */
30 int off_new;
31 int align1;
32 int i, color;
33
34 if (t->num_colors) {
35 /* align is overloaded to be the page color */
36 color = align;
37 align = t->num_colors;
38 } else {
39 color = 0;
40 if (align == 0)
41 align = 1;
42 }
43 align1 = align - 1;
44 if ((align & align1) != 0)
45 BUG();
46 if (align < 0 || align >= t->size)
47 BUG();
48 if (len <= 0 || len > t->size)
49 BUG();
50 color &= align1;
51
52 spin_lock(&t->lock);
53 if (len < t->last_size)
54 offset = t->first_free;
55 else
56 offset = t->last_off & ~align1;
57 count = 0;
58 for (;;) {
59 off_new = find_next_zero_bit(t->map, t->size, offset);
60 off_new = ((off_new + align1) & ~align1) + color;
61 count += off_new - offset;
62 offset = off_new;
63 if (offset >= t->size)
64 offset = 0;
65 if (count + len > t->size) {
66 spin_unlock(&t->lock);
67/* P3 */ printk(KERN_ERR
68 "bitmap out: size %d used %d off %d len %d align %d count %d\n",
69 t->size, t->used, offset, len, align, count);
70 return -1;
71 }
72
73 if (offset + len > t->size) {
74 count += t->size - offset;
75 offset = 0;
76 continue;
77 }
78
79 i = 0;
80 while (test_bit(offset + i, t->map) == 0) {
81 i++;
82 if (i == len) {
83 for (i = 0; i < len; i++)
84 __set_bit(offset + i, t->map);
85 if (offset == t->first_free)
86 t->first_free = find_next_zero_bit
87 (t->map, t->size,
88 t->first_free + len);
89 if ((t->last_off = offset + len) >= t->size)
90 t->last_off = 0;
91 t->used += len;
92 t->last_size = len;
93 spin_unlock(&t->lock);
94 return offset;
95 }
96 }
97 count += i + 1;
98 if ((offset += i + 1) >= t->size)
99 offset = 0;
100 }
101}
102
103void bit_map_clear(struct bit_map *t, int offset, int len)
104{
105 int i;
106
107 if (t->used < len)
108 BUG(); /* Much too late to do any good, but alas... */
109 spin_lock(&t->lock);
110 for (i = 0; i < len; i++) {
111 if (test_bit(offset + i, t->map) == 0)
112 BUG();
113 __clear_bit(offset + i, t->map);
114 }
115 if (offset < t->first_free)
116 t->first_free = offset;
117 t->used -= len;
118 spin_unlock(&t->lock);
119}
120
121void bit_map_init(struct bit_map *t, unsigned long *map, int size)
122{
123
124 if ((size & 07) != 0)
125 BUG();
126 memset(map, 0, size>>3);
127
128 memset(t, 0, sizeof *t);
129 spin_lock_init(&t->lock);
130 t->map = map;
131 t->size = size;
132}
diff --git a/arch/sparc/lib/bitops.S b/arch/sparc/lib/bitops.S
new file mode 100644
index 000000000000..3e9399769075
--- /dev/null
+++ b/arch/sparc/lib/bitops.S
@@ -0,0 +1,110 @@
1/* bitops.S: Low level assembler bit operations.
2 *
3 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
4 */
5
6#include <linux/config.h>
7#include <asm/ptrace.h>
8#include <asm/psr.h>
9
10 .text
11 .align 4
12
13 .globl __bitops_begin
14__bitops_begin:
15
16 /* Take bits in %g2 and set them in word at %g1,
17 * return whether bits were set in original value
18 * in %g2. %g4 holds value to restore into %o7
19 * in delay slot of jmpl return, %g3 + %g5 + %g7 can be
20 * used as temporaries and thus is considered clobbered
21 * by all callers.
22 */
23 .globl ___set_bit
24___set_bit:
25 rd %psr, %g3
26 nop; nop; nop;
27 or %g3, PSR_PIL, %g5
28 wr %g5, 0x0, %psr
29 nop; nop; nop
30#ifdef CONFIG_SMP
31 set bitops_spinlock, %g5
322: ldstub [%g5], %g7 ! Spin on the byte lock for SMP.
33 orcc %g7, 0x0, %g0 ! Did we get it?
34 bne 2b ! Nope...
35#endif
36 ld [%g1], %g7
37 or %g7, %g2, %g5
38 and %g7, %g2, %g2
39#ifdef CONFIG_SMP
40 st %g5, [%g1]
41 set bitops_spinlock, %g5
42 stb %g0, [%g5]
43#else
44 st %g5, [%g1]
45#endif
46 wr %g3, 0x0, %psr
47 nop; nop; nop
48 jmpl %o7, %g0
49 mov %g4, %o7
50
51 /* Same as above, but clears the bits from %g2 instead. */
52 .globl ___clear_bit
53___clear_bit:
54 rd %psr, %g3
55 nop; nop; nop
56 or %g3, PSR_PIL, %g5
57 wr %g5, 0x0, %psr
58 nop; nop; nop
59#ifdef CONFIG_SMP
60 set bitops_spinlock, %g5
612: ldstub [%g5], %g7 ! Spin on the byte lock for SMP.
62 orcc %g7, 0x0, %g0 ! Did we get it?
63 bne 2b ! Nope...
64#endif
65 ld [%g1], %g7
66 andn %g7, %g2, %g5
67 and %g7, %g2, %g2
68#ifdef CONFIG_SMP
69 st %g5, [%g1]
70 set bitops_spinlock, %g5
71 stb %g0, [%g5]
72#else
73 st %g5, [%g1]
74#endif
75 wr %g3, 0x0, %psr
76 nop; nop; nop
77 jmpl %o7, %g0
78 mov %g4, %o7
79
80 /* Same thing again, but this time toggles the bits from %g2. */
81 .globl ___change_bit
82___change_bit:
83 rd %psr, %g3
84 nop; nop; nop
85 or %g3, PSR_PIL, %g5
86 wr %g5, 0x0, %psr
87 nop; nop; nop
88#ifdef CONFIG_SMP
89 set bitops_spinlock, %g5
902: ldstub [%g5], %g7 ! Spin on the byte lock for SMP.
91 orcc %g7, 0x0, %g0 ! Did we get it?
92 bne 2b ! Nope...
93#endif
94 ld [%g1], %g7
95 xor %g7, %g2, %g5
96 and %g7, %g2, %g2
97#ifdef CONFIG_SMP
98 st %g5, [%g1]
99 set bitops_spinlock, %g5
100 stb %g0, [%g5]
101#else
102 st %g5, [%g1]
103#endif
104 wr %g3, 0x0, %psr
105 nop; nop; nop
106 jmpl %o7, %g0
107 mov %g4, %o7
108
109 .globl __bitops_end
110__bitops_end:
diff --git a/arch/sparc/lib/blockops.S b/arch/sparc/lib/blockops.S
new file mode 100644
index 000000000000..a7c7ffaa4a94
--- /dev/null
+++ b/arch/sparc/lib/blockops.S
@@ -0,0 +1,89 @@
1/* $Id: blockops.S,v 1.8 1998/01/30 10:58:44 jj Exp $
2 * blockops.S: Common block zero optimized routines.
3 *
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7#include <asm/page.h>
8
9 /* Zero out 64 bytes of memory at (buf + offset).
10 * Assumes %g1 contains zero.
11 */
12#define BLAST_BLOCK(buf, offset) \
13 std %g0, [buf + offset + 0x38]; \
14 std %g0, [buf + offset + 0x30]; \
15 std %g0, [buf + offset + 0x28]; \
16 std %g0, [buf + offset + 0x20]; \
17 std %g0, [buf + offset + 0x18]; \
18 std %g0, [buf + offset + 0x10]; \
19 std %g0, [buf + offset + 0x08]; \
20 std %g0, [buf + offset + 0x00];
21
22 /* Copy 32 bytes of memory at (src + offset) to
23 * (dst + offset).
24 */
25#define MIRROR_BLOCK(dst, src, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
26 ldd [src + offset + 0x18], t0; \
27 ldd [src + offset + 0x10], t2; \
28 ldd [src + offset + 0x08], t4; \
29 ldd [src + offset + 0x00], t6; \
30 std t0, [dst + offset + 0x18]; \
31 std t2, [dst + offset + 0x10]; \
32 std t4, [dst + offset + 0x08]; \
33 std t6, [dst + offset + 0x00];
34
35 /* Profiling evidence indicates that memset() is
36 * commonly called for blocks of size PAGE_SIZE,
37 * and (2 * PAGE_SIZE) (for kernel stacks)
38 * and with a second arg of zero. We assume in
39 * all of these cases that the buffer is aligned
40 * on at least an 8 byte boundary.
41 *
42 * Therefore we special case them to make them
43 * as fast as possible.
44 */
45
46 .text
47 .align 4
48 .globl bzero_1page, __copy_1page
49
50bzero_1page:
51/* NOTE: If you change the number of insns of this routine, please check
52 * arch/sparc/mm/hypersparc.S */
53 /* %o0 = buf */
54 or %g0, %g0, %g1
55 or %o0, %g0, %o1
56 or %g0, (PAGE_SIZE >> 8), %g2
571:
58 BLAST_BLOCK(%o0, 0x00)
59 BLAST_BLOCK(%o0, 0x40)
60 BLAST_BLOCK(%o0, 0x80)
61 BLAST_BLOCK(%o0, 0xc0)
62 subcc %g2, 1, %g2
63 bne 1b
64 add %o0, 0x100, %o0
65
66 retl
67 nop
68
69__copy_1page:
70/* NOTE: If you change the number of insns of this routine, please check
71 * arch/sparc/mm/hypersparc.S */
72 /* %o0 = dst, %o1 = src */
73 or %g0, (PAGE_SIZE >> 8), %g1
741:
75 MIRROR_BLOCK(%o0, %o1, 0x00, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
76 MIRROR_BLOCK(%o0, %o1, 0x20, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
77 MIRROR_BLOCK(%o0, %o1, 0x40, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
78 MIRROR_BLOCK(%o0, %o1, 0x60, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
79 MIRROR_BLOCK(%o0, %o1, 0x80, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
80 MIRROR_BLOCK(%o0, %o1, 0xa0, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
81 MIRROR_BLOCK(%o0, %o1, 0xc0, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
82 MIRROR_BLOCK(%o0, %o1, 0xe0, %o2, %o3, %o4, %o5, %g2, %g3, %g4, %g5)
83 subcc %g1, 1, %g1
84 add %o0, 0x100, %o0
85 bne 1b
86 add %o1, 0x100, %o1
87
88 retl
89 nop
diff --git a/arch/sparc/lib/checksum.S b/arch/sparc/lib/checksum.S
new file mode 100644
index 000000000000..77f228533d47
--- /dev/null
+++ b/arch/sparc/lib/checksum.S
@@ -0,0 +1,583 @@
1/* checksum.S: Sparc optimized checksum code.
2 *
3 * Copyright(C) 1995 Linus Torvalds
4 * Copyright(C) 1995 Miguel de Icaza
5 * Copyright(C) 1996 David S. Miller
6 * Copyright(C) 1997 Jakub Jelinek
7 *
8 * derived from:
9 * Linux/Alpha checksum c-code
10 * Linux/ix86 inline checksum assembly
11 * RFC1071 Computing the Internet Checksum (esp. Jacobsons m68k code)
12 * David Mosberger-Tang for optimized reference c-code
13 * BSD4.4 portable checksum routine
14 */
15
16#include <asm/errno.h>
17
18#define CSUM_BIGCHUNK(buf, offset, sum, t0, t1, t2, t3, t4, t5) \
19 ldd [buf + offset + 0x00], t0; \
20 ldd [buf + offset + 0x08], t2; \
21 addxcc t0, sum, sum; \
22 addxcc t1, sum, sum; \
23 ldd [buf + offset + 0x10], t4; \
24 addxcc t2, sum, sum; \
25 addxcc t3, sum, sum; \
26 ldd [buf + offset + 0x18], t0; \
27 addxcc t4, sum, sum; \
28 addxcc t5, sum, sum; \
29 addxcc t0, sum, sum; \
30 addxcc t1, sum, sum;
31
32#define CSUM_LASTCHUNK(buf, offset, sum, t0, t1, t2, t3) \
33 ldd [buf - offset - 0x08], t0; \
34 ldd [buf - offset - 0x00], t2; \
35 addxcc t0, sum, sum; \
36 addxcc t1, sum, sum; \
37 addxcc t2, sum, sum; \
38 addxcc t3, sum, sum;
39
40 /* Do end cruft out of band to get better cache patterns. */
41csum_partial_end_cruft:
42 be 1f ! caller asks %o1 & 0x8
43 andcc %o1, 4, %g0 ! nope, check for word remaining
44 ldd [%o0], %g2 ! load two
45 addcc %g2, %o2, %o2 ! add first word to sum
46 addxcc %g3, %o2, %o2 ! add second word as well
47 add %o0, 8, %o0 ! advance buf ptr
48 addx %g0, %o2, %o2 ! add in final carry
49 andcc %o1, 4, %g0 ! check again for word remaining
501: be 1f ! nope, skip this code
51 andcc %o1, 3, %o1 ! check for trailing bytes
52 ld [%o0], %g2 ! load it
53 addcc %g2, %o2, %o2 ! add to sum
54 add %o0, 4, %o0 ! advance buf ptr
55 addx %g0, %o2, %o2 ! add in final carry
56 andcc %o1, 3, %g0 ! check again for trailing bytes
571: be 1f ! no trailing bytes, return
58 addcc %o1, -1, %g0 ! only one byte remains?
59 bne 2f ! at least two bytes more
60 subcc %o1, 2, %o1 ! only two bytes more?
61 b 4f ! only one byte remains
62 or %g0, %g0, %o4 ! clear fake hword value
632: lduh [%o0], %o4 ! get hword
64 be 6f ! jmp if only hword remains
65 add %o0, 2, %o0 ! advance buf ptr either way
66 sll %o4, 16, %o4 ! create upper hword
674: ldub [%o0], %o5 ! get final byte
68 sll %o5, 8, %o5 ! put into place
69 or %o5, %o4, %o4 ! coalese with hword (if any)
706: addcc %o4, %o2, %o2 ! add to sum
711: retl ! get outta here
72 addx %g0, %o2, %o0 ! add final carry into retval
73
74 /* Also do alignment out of band to get better cache patterns. */
75csum_partial_fix_alignment:
76 cmp %o1, 6
77 bl cpte - 0x4
78 andcc %o0, 0x2, %g0
79 be 1f
80 andcc %o0, 0x4, %g0
81 lduh [%o0 + 0x00], %g2
82 sub %o1, 2, %o1
83 add %o0, 2, %o0
84 sll %g2, 16, %g2
85 addcc %g2, %o2, %o2
86 srl %o2, 16, %g3
87 addx %g0, %g3, %g2
88 sll %o2, 16, %o2
89 sll %g2, 16, %g3
90 srl %o2, 16, %o2
91 andcc %o0, 0x4, %g0
92 or %g3, %o2, %o2
931: be cpa
94 andcc %o1, 0xffffff80, %o3
95 ld [%o0 + 0x00], %g2
96 sub %o1, 4, %o1
97 addcc %g2, %o2, %o2
98 add %o0, 4, %o0
99 addx %g0, %o2, %o2
100 b cpa
101 andcc %o1, 0xffffff80, %o3
102
103 /* The common case is to get called with a nicely aligned
104 * buffer of size 0x20. Follow the code path for that case.
105 */
106 .globl csum_partial
107csum_partial: /* %o0=buf, %o1=len, %o2=sum */
108 andcc %o0, 0x7, %g0 ! alignment problems?
109 bne csum_partial_fix_alignment ! yep, handle it
110 sethi %hi(cpte - 8), %g7 ! prepare table jmp ptr
111 andcc %o1, 0xffffff80, %o3 ! num loop iterations
112cpa: be 3f ! none to do
113 andcc %o1, 0x70, %g1 ! clears carry flag too
1145: CSUM_BIGCHUNK(%o0, 0x00, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
115 CSUM_BIGCHUNK(%o0, 0x20, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
116 CSUM_BIGCHUNK(%o0, 0x40, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
117 CSUM_BIGCHUNK(%o0, 0x60, %o2, %o4, %o5, %g2, %g3, %g4, %g5)
118 addx %g0, %o2, %o2 ! sink in final carry
119 subcc %o3, 128, %o3 ! detract from loop iters
120 bne 5b ! more to do
121 add %o0, 128, %o0 ! advance buf ptr
122 andcc %o1, 0x70, %g1 ! clears carry flag too
1233: be cpte ! nope
124 andcc %o1, 0xf, %g0 ! anything left at all?
125 srl %g1, 1, %o4 ! compute offset
126 sub %g7, %g1, %g7 ! adjust jmp ptr
127 sub %g7, %o4, %g7 ! final jmp ptr adjust
128 jmp %g7 + %lo(cpte - 8) ! enter the table
129 add %o0, %g1, %o0 ! advance buf ptr
130cptbl: CSUM_LASTCHUNK(%o0, 0x68, %o2, %g2, %g3, %g4, %g5)
131 CSUM_LASTCHUNK(%o0, 0x58, %o2, %g2, %g3, %g4, %g5)
132 CSUM_LASTCHUNK(%o0, 0x48, %o2, %g2, %g3, %g4, %g5)
133 CSUM_LASTCHUNK(%o0, 0x38, %o2, %g2, %g3, %g4, %g5)
134 CSUM_LASTCHUNK(%o0, 0x28, %o2, %g2, %g3, %g4, %g5)
135 CSUM_LASTCHUNK(%o0, 0x18, %o2, %g2, %g3, %g4, %g5)
136 CSUM_LASTCHUNK(%o0, 0x08, %o2, %g2, %g3, %g4, %g5)
137 addx %g0, %o2, %o2 ! fetch final carry
138 andcc %o1, 0xf, %g0 ! anything left at all?
139cpte: bne csum_partial_end_cruft ! yep, handle it
140 andcc %o1, 8, %g0 ! check how much
141cpout: retl ! get outta here
142 mov %o2, %o0 ! return computed csum
143
144 .globl __csum_partial_copy_start, __csum_partial_copy_end
145__csum_partial_copy_start:
146
147/* Work around cpp -rob */
148#define ALLOC #alloc
149#define EXECINSTR #execinstr
150#define EX(x,y,a,b) \
15198: x,y; \
152 .section .fixup,ALLOC,EXECINSTR; \
153 .align 4; \
15499: ba 30f; \
155 a, b, %o3; \
156 .section __ex_table,ALLOC; \
157 .align 4; \
158 .word 98b, 99b; \
159 .text; \
160 .align 4
161
162#define EX2(x,y) \
16398: x,y; \
164 .section __ex_table,ALLOC; \
165 .align 4; \
166 .word 98b, 30f; \
167 .text; \
168 .align 4
169
170#define EX3(x,y) \
17198: x,y; \
172 .section __ex_table,ALLOC; \
173 .align 4; \
174 .word 98b, 96f; \
175 .text; \
176 .align 4
177
178#define EXT(start,end,handler) \
179 .section __ex_table,ALLOC; \
180 .align 4; \
181 .word start, 0, end, handler; \
182 .text; \
183 .align 4
184
185 /* This aligned version executes typically in 8.5 superscalar cycles, this
186 * is the best I can do. I say 8.5 because the final add will pair with
187 * the next ldd in the main unrolled loop. Thus the pipe is always full.
188 * If you change these macros (including order of instructions),
189 * please check the fixup code below as well.
190 */
191#define CSUMCOPY_BIGCHUNK_ALIGNED(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7) \
192 ldd [src + off + 0x00], t0; \
193 ldd [src + off + 0x08], t2; \
194 addxcc t0, sum, sum; \
195 ldd [src + off + 0x10], t4; \
196 addxcc t1, sum, sum; \
197 ldd [src + off + 0x18], t6; \
198 addxcc t2, sum, sum; \
199 std t0, [dst + off + 0x00]; \
200 addxcc t3, sum, sum; \
201 std t2, [dst + off + 0x08]; \
202 addxcc t4, sum, sum; \
203 std t4, [dst + off + 0x10]; \
204 addxcc t5, sum, sum; \
205 std t6, [dst + off + 0x18]; \
206 addxcc t6, sum, sum; \
207 addxcc t7, sum, sum;
208
209 /* 12 superscalar cycles seems to be the limit for this case,
210 * because of this we thus do all the ldd's together to get
211 * Viking MXCC into streaming mode. Ho hum...
212 */
213#define CSUMCOPY_BIGCHUNK(src, dst, sum, off, t0, t1, t2, t3, t4, t5, t6, t7) \
214 ldd [src + off + 0x00], t0; \
215 ldd [src + off + 0x08], t2; \
216 ldd [src + off + 0x10], t4; \
217 ldd [src + off + 0x18], t6; \
218 st t0, [dst + off + 0x00]; \
219 addxcc t0, sum, sum; \
220 st t1, [dst + off + 0x04]; \
221 addxcc t1, sum, sum; \
222 st t2, [dst + off + 0x08]; \
223 addxcc t2, sum, sum; \
224 st t3, [dst + off + 0x0c]; \
225 addxcc t3, sum, sum; \
226 st t4, [dst + off + 0x10]; \
227 addxcc t4, sum, sum; \
228 st t5, [dst + off + 0x14]; \
229 addxcc t5, sum, sum; \
230 st t6, [dst + off + 0x18]; \
231 addxcc t6, sum, sum; \
232 st t7, [dst + off + 0x1c]; \
233 addxcc t7, sum, sum;
234
235 /* Yuck, 6 superscalar cycles... */
236#define CSUMCOPY_LASTCHUNK(src, dst, sum, off, t0, t1, t2, t3) \
237 ldd [src - off - 0x08], t0; \
238 ldd [src - off - 0x00], t2; \
239 addxcc t0, sum, sum; \
240 st t0, [dst - off - 0x08]; \
241 addxcc t1, sum, sum; \
242 st t1, [dst - off - 0x04]; \
243 addxcc t2, sum, sum; \
244 st t2, [dst - off - 0x00]; \
245 addxcc t3, sum, sum; \
246 st t3, [dst - off + 0x04];
247
248 /* Handle the end cruft code out of band for better cache patterns. */
249cc_end_cruft:
250 be 1f
251 andcc %o3, 4, %g0
252 EX(ldd [%o0 + 0x00], %g2, and %o3, 0xf)
253 add %o1, 8, %o1
254 addcc %g2, %g7, %g7
255 add %o0, 8, %o0
256 addxcc %g3, %g7, %g7
257 EX2(st %g2, [%o1 - 0x08])
258 addx %g0, %g7, %g7
259 andcc %o3, 4, %g0
260 EX2(st %g3, [%o1 - 0x04])
2611: be 1f
262 andcc %o3, 3, %o3
263 EX(ld [%o0 + 0x00], %g2, add %o3, 4)
264 add %o1, 4, %o1
265 addcc %g2, %g7, %g7
266 EX2(st %g2, [%o1 - 0x04])
267 addx %g0, %g7, %g7
268 andcc %o3, 3, %g0
269 add %o0, 4, %o0
2701: be 1f
271 addcc %o3, -1, %g0
272 bne 2f
273 subcc %o3, 2, %o3
274 b 4f
275 or %g0, %g0, %o4
2762: EX(lduh [%o0 + 0x00], %o4, add %o3, 2)
277 add %o0, 2, %o0
278 EX2(sth %o4, [%o1 + 0x00])
279 be 6f
280 add %o1, 2, %o1
281 sll %o4, 16, %o4
2824: EX(ldub [%o0 + 0x00], %o5, add %g0, 1)
283 EX2(stb %o5, [%o1 + 0x00])
284 sll %o5, 8, %o5
285 or %o5, %o4, %o4
2866: addcc %o4, %g7, %g7
2871: retl
288 addx %g0, %g7, %o0
289
290 /* Also, handle the alignment code out of band. */
291cc_dword_align:
292 cmp %g1, 6
293 bl,a ccte
294 andcc %g1, 0xf, %o3
295 andcc %o0, 0x1, %g0
296 bne ccslow
297 andcc %o0, 0x2, %g0
298 be 1f
299 andcc %o0, 0x4, %g0
300 EX(lduh [%o0 + 0x00], %g4, add %g1, 0)
301 sub %g1, 2, %g1
302 EX2(sth %g4, [%o1 + 0x00])
303 add %o0, 2, %o0
304 sll %g4, 16, %g4
305 addcc %g4, %g7, %g7
306 add %o1, 2, %o1
307 srl %g7, 16, %g3
308 addx %g0, %g3, %g4
309 sll %g7, 16, %g7
310 sll %g4, 16, %g3
311 srl %g7, 16, %g7
312 andcc %o0, 0x4, %g0
313 or %g3, %g7, %g7
3141: be 3f
315 andcc %g1, 0xffffff80, %g0
316 EX(ld [%o0 + 0x00], %g4, add %g1, 0)
317 sub %g1, 4, %g1
318 EX2(st %g4, [%o1 + 0x00])
319 add %o0, 4, %o0
320 addcc %g4, %g7, %g7
321 add %o1, 4, %o1
322 addx %g0, %g7, %g7
323 b 3f
324 andcc %g1, 0xffffff80, %g0
325
326 /* Sun, you just can't beat me, you just can't. Stop trying,
327 * give up. I'm serious, I am going to kick the living shit
328 * out of you, game over, lights out.
329 */
330 .align 8
331 .globl __csum_partial_copy_sparc_generic
332__csum_partial_copy_sparc_generic:
333 /* %o0=src, %o1=dest, %g1=len, %g7=sum */
334 xor %o0, %o1, %o4 ! get changing bits
335 andcc %o4, 3, %g0 ! check for mismatched alignment
336 bne ccslow ! better this than unaligned/fixups
337 andcc %o0, 7, %g0 ! need to align things?
338 bne cc_dword_align ! yes, we check for short lengths there
339 andcc %g1, 0xffffff80, %g0 ! can we use unrolled loop?
3403: be 3f ! nope, less than one loop remains
341 andcc %o1, 4, %g0 ! dest aligned on 4 or 8 byte boundary?
342 be ccdbl + 4 ! 8 byte aligned, kick ass
3435: CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
344 CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
345 CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
346 CSUMCOPY_BIGCHUNK(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
34710: EXT(5b, 10b, 20f) ! note for exception handling
348 sub %g1, 128, %g1 ! detract from length
349 addx %g0, %g7, %g7 ! add in last carry bit
350 andcc %g1, 0xffffff80, %g0 ! more to csum?
351 add %o0, 128, %o0 ! advance src ptr
352 bne 5b ! we did not go negative, continue looping
353 add %o1, 128, %o1 ! advance dest ptr
3543: andcc %g1, 0x70, %o2 ! can use table?
355ccmerge:be ccte ! nope, go and check for end cruft
356 andcc %g1, 0xf, %o3 ! get low bits of length (clears carry btw)
357 srl %o2, 1, %o4 ! begin negative offset computation
358 sethi %hi(12f), %o5 ! set up table ptr end
359 add %o0, %o2, %o0 ! advance src ptr
360 sub %o5, %o4, %o5 ! continue table calculation
361 sll %o2, 1, %g2 ! constant multiplies are fun...
362 sub %o5, %g2, %o5 ! some more adjustments
363 jmp %o5 + %lo(12f) ! jump into it, duff style, wheee...
364 add %o1, %o2, %o1 ! advance dest ptr (carry is clear btw)
365cctbl: CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x68,%g2,%g3,%g4,%g5)
366 CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x58,%g2,%g3,%g4,%g5)
367 CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x48,%g2,%g3,%g4,%g5)
368 CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x38,%g2,%g3,%g4,%g5)
369 CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x28,%g2,%g3,%g4,%g5)
370 CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x18,%g2,%g3,%g4,%g5)
371 CSUMCOPY_LASTCHUNK(%o0,%o1,%g7,0x08,%g2,%g3,%g4,%g5)
37212: EXT(cctbl, 12b, 22f) ! note for exception table handling
373 addx %g0, %g7, %g7
374 andcc %o3, 0xf, %g0 ! check for low bits set
375ccte: bne cc_end_cruft ! something left, handle it out of band
376 andcc %o3, 8, %g0 ! begin checks for that code
377 retl ! return
378 mov %g7, %o0 ! give em the computed checksum
379ccdbl: CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x00,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
380 CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x20,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
381 CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x40,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
382 CSUMCOPY_BIGCHUNK_ALIGNED(%o0,%o1,%g7,0x60,%o4,%o5,%g2,%g3,%g4,%g5,%o2,%o3)
38311: EXT(ccdbl, 11b, 21f) ! note for exception table handling
384 sub %g1, 128, %g1 ! detract from length
385 addx %g0, %g7, %g7 ! add in last carry bit
386 andcc %g1, 0xffffff80, %g0 ! more to csum?
387 add %o0, 128, %o0 ! advance src ptr
388 bne ccdbl ! we did not go negative, continue looping
389 add %o1, 128, %o1 ! advance dest ptr
390 b ccmerge ! finish it off, above
391 andcc %g1, 0x70, %o2 ! can use table? (clears carry btw)
392
393ccslow: cmp %g1, 0
394 mov 0, %g5
395 bleu 4f
396 andcc %o0, 1, %o5
397 be,a 1f
398 srl %g1, 1, %g4
399 sub %g1, 1, %g1
400 EX(ldub [%o0], %g5, add %g1, 1)
401 add %o0, 1, %o0
402 EX2(stb %g5, [%o1])
403 srl %g1, 1, %g4
404 add %o1, 1, %o1
4051: cmp %g4, 0
406 be,a 3f
407 andcc %g1, 1, %g0
408 andcc %o0, 2, %g0
409 be,a 1f
410 srl %g4, 1, %g4
411 EX(lduh [%o0], %o4, add %g1, 0)
412 sub %g1, 2, %g1
413 srl %o4, 8, %g2
414 sub %g4, 1, %g4
415 EX2(stb %g2, [%o1])
416 add %o4, %g5, %g5
417 EX2(stb %o4, [%o1 + 1])
418 add %o0, 2, %o0
419 srl %g4, 1, %g4
420 add %o1, 2, %o1
4211: cmp %g4, 0
422 be,a 2f
423 andcc %g1, 2, %g0
424 EX3(ld [%o0], %o4)
4255: srl %o4, 24, %g2
426 srl %o4, 16, %g3
427 EX2(stb %g2, [%o1])
428 srl %o4, 8, %g2
429 EX2(stb %g3, [%o1 + 1])
430 add %o0, 4, %o0
431 EX2(stb %g2, [%o1 + 2])
432 addcc %o4, %g5, %g5
433 EX2(stb %o4, [%o1 + 3])
434 addx %g5, %g0, %g5 ! I am now to lazy to optimize this (question it
435 add %o1, 4, %o1 ! is worthy). Maybe some day - with the sll/srl
436 subcc %g4, 1, %g4 ! tricks
437 bne,a 5b
438 EX3(ld [%o0], %o4)
439 sll %g5, 16, %g2
440 srl %g5, 16, %g5
441 srl %g2, 16, %g2
442 andcc %g1, 2, %g0
443 add %g2, %g5, %g5
4442: be,a 3f
445 andcc %g1, 1, %g0
446 EX(lduh [%o0], %o4, and %g1, 3)
447 andcc %g1, 1, %g0
448 srl %o4, 8, %g2
449 add %o0, 2, %o0
450 EX2(stb %g2, [%o1])
451 add %g5, %o4, %g5
452 EX2(stb %o4, [%o1 + 1])
453 add %o1, 2, %o1
4543: be,a 1f
455 sll %g5, 16, %o4
456 EX(ldub [%o0], %g2, add %g0, 1)
457 sll %g2, 8, %o4
458 EX2(stb %g2, [%o1])
459 add %g5, %o4, %g5
460 sll %g5, 16, %o4
4611: addcc %o4, %g5, %g5
462 srl %g5, 16, %o4
463 addx %g0, %o4, %g5
464 orcc %o5, %g0, %g0
465 be 4f
466 srl %g5, 8, %o4
467 and %g5, 0xff, %g2
468 and %o4, 0xff, %o4
469 sll %g2, 8, %g2
470 or %g2, %o4, %g5
4714: addcc %g7, %g5, %g7
472 retl
473 addx %g0, %g7, %o0
474__csum_partial_copy_end:
475
476/* We do these strange calculations for the csum_*_from_user case only, ie.
477 * we only bother with faults on loads... */
478
479/* o2 = ((g2%20)&3)*8
480 * o3 = g1 - (g2/20)*32 - o2 */
48120:
482 cmp %g2, 20
483 blu,a 1f
484 and %g2, 3, %o2
485 sub %g1, 32, %g1
486 b 20b
487 sub %g2, 20, %g2
4881:
489 sll %o2, 3, %o2
490 b 31f
491 sub %g1, %o2, %o3
492
493/* o2 = (!(g2 & 15) ? 0 : (((g2 & 15) + 1) & ~1)*8)
494 * o3 = g1 - (g2/16)*32 - o2 */
49521:
496 andcc %g2, 15, %o3
497 srl %g2, 4, %g2
498 be,a 1f
499 clr %o2
500 add %o3, 1, %o3
501 and %o3, 14, %o3
502 sll %o3, 3, %o2
5031:
504 sll %g2, 5, %g2
505 sub %g1, %g2, %o3
506 b 31f
507 sub %o3, %o2, %o3
508
509/* o0 += (g2/10)*16 - 0x70
510 * 01 += (g2/10)*16 - 0x70
511 * o2 = (g2 % 10) ? 8 : 0
512 * o3 += 0x70 - (g2/10)*16 - o2 */
51322:
514 cmp %g2, 10
515 blu,a 1f
516 sub %o0, 0x70, %o0
517 add %o0, 16, %o0
518 add %o1, 16, %o1
519 sub %o3, 16, %o3
520 b 22b
521 sub %g2, 10, %g2
5221:
523 sub %o1, 0x70, %o1
524 add %o3, 0x70, %o3
525 clr %o2
526 tst %g2
527 bne,a 1f
528 mov 8, %o2
5291:
530 b 31f
531 sub %o3, %o2, %o3
53296:
533 and %g1, 3, %g1
534 sll %g4, 2, %g4
535 add %g1, %g4, %o3
53630:
537/* %o1 is dst
538 * %o3 is # bytes to zero out
539 * %o4 is faulting address
540 * %o5 is %pc where fault occurred */
541 clr %o2
54231:
543/* %o0 is src
544 * %o1 is dst
545 * %o2 is # of bytes to copy from src to dst
546 * %o3 is # bytes to zero out
547 * %o4 is faulting address
548 * %o5 is %pc where fault occurred */
549 save %sp, -104, %sp
550 mov %i5, %o0
551 mov %i7, %o1
552 mov %i4, %o2
553 call lookup_fault
554 mov %g7, %i4
555 cmp %o0, 2
556 bne 1f
557 add %g0, -EFAULT, %i5
558 tst %i2
559 be 2f
560 mov %i0, %o1
561 mov %i1, %o0
5625:
563 call __memcpy
564 mov %i2, %o2
565 tst %o0
566 bne,a 2f
567 add %i3, %i2, %i3
568 add %i1, %i2, %i1
5692:
570 mov %i1, %o0
5716:
572 call __bzero
573 mov %i3, %o1
5741:
575 ld [%sp + 168], %o2 ! struct_ptr of parent
576 st %i5, [%o2]
577 ret
578 restore
579
580 .section __ex_table,#alloc
581 .align 4
582 .word 5b,2
583 .word 6b,2
diff --git a/arch/sparc/lib/copy_user.S b/arch/sparc/lib/copy_user.S
new file mode 100644
index 000000000000..577505b692ae
--- /dev/null
+++ b/arch/sparc/lib/copy_user.S
@@ -0,0 +1,492 @@
1/* copy_user.S: Sparc optimized copy_from_user and copy_to_user code.
2 *
3 * Copyright(C) 1995 Linus Torvalds
4 * Copyright(C) 1996 David S. Miller
5 * Copyright(C) 1996 Eddie C. Dost
6 * Copyright(C) 1996,1998 Jakub Jelinek
7 *
8 * derived from:
9 * e-mail between David and Eddie.
10 *
11 * Returns 0 if successful, otherwise count of bytes not copied yet
12 */
13
14#include <asm/ptrace.h>
15#include <asm/asmmacro.h>
16#include <asm/page.h>
17
18/* Work around cpp -rob */
19#define ALLOC #alloc
20#define EXECINSTR #execinstr
21#define EX(x,y,a,b) \
2298: x,y; \
23 .section .fixup,ALLOC,EXECINSTR; \
24 .align 4; \
2599: ba fixupretl; \
26 a, b, %g3; \
27 .section __ex_table,ALLOC; \
28 .align 4; \
29 .word 98b, 99b; \
30 .text; \
31 .align 4
32
33#define EX2(x,y,c,d,e,a,b) \
3498: x,y; \
35 .section .fixup,ALLOC,EXECINSTR; \
36 .align 4; \
3799: c, d, e; \
38 ba fixupretl; \
39 a, b, %g3; \
40 .section __ex_table,ALLOC; \
41 .align 4; \
42 .word 98b, 99b; \
43 .text; \
44 .align 4
45
46#define EXO2(x,y) \
4798: x, y; \
48 .section __ex_table,ALLOC; \
49 .align 4; \
50 .word 98b, 97f; \
51 .text; \
52 .align 4
53
54#define EXT(start,end,handler) \
55 .section __ex_table,ALLOC; \
56 .align 4; \
57 .word start, 0, end, handler; \
58 .text; \
59 .align 4
60
61/* Please do not change following macros unless you change logic used
62 * in .fixup at the end of this file as well
63 */
64
65/* Both these macros have to start with exactly the same insn */
66#define MOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
67 ldd [%src + (offset) + 0x00], %t0; \
68 ldd [%src + (offset) + 0x08], %t2; \
69 ldd [%src + (offset) + 0x10], %t4; \
70 ldd [%src + (offset) + 0x18], %t6; \
71 st %t0, [%dst + (offset) + 0x00]; \
72 st %t1, [%dst + (offset) + 0x04]; \
73 st %t2, [%dst + (offset) + 0x08]; \
74 st %t3, [%dst + (offset) + 0x0c]; \
75 st %t4, [%dst + (offset) + 0x10]; \
76 st %t5, [%dst + (offset) + 0x14]; \
77 st %t6, [%dst + (offset) + 0x18]; \
78 st %t7, [%dst + (offset) + 0x1c];
79
80#define MOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
81 ldd [%src + (offset) + 0x00], %t0; \
82 ldd [%src + (offset) + 0x08], %t2; \
83 ldd [%src + (offset) + 0x10], %t4; \
84 ldd [%src + (offset) + 0x18], %t6; \
85 std %t0, [%dst + (offset) + 0x00]; \
86 std %t2, [%dst + (offset) + 0x08]; \
87 std %t4, [%dst + (offset) + 0x10]; \
88 std %t6, [%dst + (offset) + 0x18];
89
90#define MOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
91 ldd [%src - (offset) - 0x10], %t0; \
92 ldd [%src - (offset) - 0x08], %t2; \
93 st %t0, [%dst - (offset) - 0x10]; \
94 st %t1, [%dst - (offset) - 0x0c]; \
95 st %t2, [%dst - (offset) - 0x08]; \
96 st %t3, [%dst - (offset) - 0x04];
97
98#define MOVE_HALFCHUNK(src, dst, offset, t0, t1, t2, t3) \
99 lduh [%src + (offset) + 0x00], %t0; \
100 lduh [%src + (offset) + 0x02], %t1; \
101 lduh [%src + (offset) + 0x04], %t2; \
102 lduh [%src + (offset) + 0x06], %t3; \
103 sth %t0, [%dst + (offset) + 0x00]; \
104 sth %t1, [%dst + (offset) + 0x02]; \
105 sth %t2, [%dst + (offset) + 0x04]; \
106 sth %t3, [%dst + (offset) + 0x06];
107
108#define MOVE_SHORTCHUNK(src, dst, offset, t0, t1) \
109 ldub [%src - (offset) - 0x02], %t0; \
110 ldub [%src - (offset) - 0x01], %t1; \
111 stb %t0, [%dst - (offset) - 0x02]; \
112 stb %t1, [%dst - (offset) - 0x01];
113
114 .text
115 .align 4
116
117 .globl __copy_user_begin
118__copy_user_begin:
119
120 .globl __copy_user
121dword_align:
122 andcc %o1, 1, %g0
123 be 4f
124 andcc %o1, 2, %g0
125
126 EXO2(ldub [%o1], %g2)
127 add %o1, 1, %o1
128 EXO2(stb %g2, [%o0])
129 sub %o2, 1, %o2
130 bne 3f
131 add %o0, 1, %o0
132
133 EXO2(lduh [%o1], %g2)
134 add %o1, 2, %o1
135 EXO2(sth %g2, [%o0])
136 sub %o2, 2, %o2
137 b 3f
138 add %o0, 2, %o0
1394:
140 EXO2(lduh [%o1], %g2)
141 add %o1, 2, %o1
142 EXO2(sth %g2, [%o0])
143 sub %o2, 2, %o2
144 b 3f
145 add %o0, 2, %o0
146
147__copy_user: /* %o0=dst %o1=src %o2=len */
148 xor %o0, %o1, %o4
1491:
150 andcc %o4, 3, %o5
1512:
152 bne cannot_optimize
153 cmp %o2, 15
154
155 bleu short_aligned_end
156 andcc %o1, 3, %g0
157
158 bne dword_align
1593:
160 andcc %o1, 4, %g0
161
162 be 2f
163 mov %o2, %g1
164
165 EXO2(ld [%o1], %o4)
166 sub %g1, 4, %g1
167 EXO2(st %o4, [%o0])
168 add %o1, 4, %o1
169 add %o0, 4, %o0
1702:
171 andcc %g1, 0xffffff80, %g7
172 be 3f
173 andcc %o0, 4, %g0
174
175 be ldd_std + 4
1765:
177 MOVE_BIGCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
178 MOVE_BIGCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
179 MOVE_BIGCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
180 MOVE_BIGCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
18180:
182 EXT(5b, 80b, 50f)
183 subcc %g7, 128, %g7
184 add %o1, 128, %o1
185 bne 5b
186 add %o0, 128, %o0
1873:
188 andcc %g1, 0x70, %g7
189 be copy_user_table_end
190 andcc %g1, 8, %g0
191
192 sethi %hi(copy_user_table_end), %o5
193 srl %g7, 1, %o4
194 add %g7, %o4, %o4
195 add %o1, %g7, %o1
196 sub %o5, %o4, %o5
197 jmpl %o5 + %lo(copy_user_table_end), %g0
198 add %o0, %g7, %o0
199
200copy_user_table:
201 MOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
202 MOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
203 MOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
204 MOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
205 MOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
206 MOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
207 MOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
208copy_user_table_end:
209 EXT(copy_user_table, copy_user_table_end, 51f)
210 be copy_user_last7
211 andcc %g1, 4, %g0
212
213 EX(ldd [%o1], %g2, and %g1, 0xf)
214 add %o0, 8, %o0
215 add %o1, 8, %o1
216 EX(st %g2, [%o0 - 0x08], and %g1, 0xf)
217 EX2(st %g3, [%o0 - 0x04], and %g1, 0xf, %g1, sub %g1, 4)
218copy_user_last7:
219 be 1f
220 andcc %g1, 2, %g0
221
222 EX(ld [%o1], %g2, and %g1, 7)
223 add %o1, 4, %o1
224 EX(st %g2, [%o0], and %g1, 7)
225 add %o0, 4, %o0
2261:
227 be 1f
228 andcc %g1, 1, %g0
229
230 EX(lduh [%o1], %g2, and %g1, 3)
231 add %o1, 2, %o1
232 EX(sth %g2, [%o0], and %g1, 3)
233 add %o0, 2, %o0
2341:
235 be 1f
236 nop
237
238 EX(ldub [%o1], %g2, add %g0, 1)
239 EX(stb %g2, [%o0], add %g0, 1)
2401:
241 retl
242 clr %o0
243
244ldd_std:
245 MOVE_BIGALIGNCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
246 MOVE_BIGALIGNCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
247 MOVE_BIGALIGNCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
248 MOVE_BIGALIGNCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
24981:
250 EXT(ldd_std, 81b, 52f)
251 subcc %g7, 128, %g7
252 add %o1, 128, %o1
253 bne ldd_std
254 add %o0, 128, %o0
255
256 andcc %g1, 0x70, %g7
257 be copy_user_table_end
258 andcc %g1, 8, %g0
259
260 sethi %hi(copy_user_table_end), %o5
261 srl %g7, 1, %o4
262 add %g7, %o4, %o4
263 add %o1, %g7, %o1
264 sub %o5, %o4, %o5
265 jmpl %o5 + %lo(copy_user_table_end), %g0
266 add %o0, %g7, %o0
267
268cannot_optimize:
269 bleu short_end
270 cmp %o5, 2
271
272 bne byte_chunk
273 and %o2, 0xfffffff0, %o3
274
275 andcc %o1, 1, %g0
276 be 10f
277 nop
278
279 EXO2(ldub [%o1], %g2)
280 add %o1, 1, %o1
281 EXO2(stb %g2, [%o0])
282 sub %o2, 1, %o2
283 andcc %o2, 0xfffffff0, %o3
284 be short_end
285 add %o0, 1, %o0
28610:
287 MOVE_HALFCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
288 MOVE_HALFCHUNK(o1, o0, 0x08, g2, g3, g4, g5)
28982:
290 EXT(10b, 82b, 53f)
291 subcc %o3, 0x10, %o3
292 add %o1, 0x10, %o1
293 bne 10b
294 add %o0, 0x10, %o0
295 b 2f
296 and %o2, 0xe, %o3
297
298byte_chunk:
299 MOVE_SHORTCHUNK(o1, o0, -0x02, g2, g3)
300 MOVE_SHORTCHUNK(o1, o0, -0x04, g2, g3)
301 MOVE_SHORTCHUNK(o1, o0, -0x06, g2, g3)
302 MOVE_SHORTCHUNK(o1, o0, -0x08, g2, g3)
303 MOVE_SHORTCHUNK(o1, o0, -0x0a, g2, g3)
304 MOVE_SHORTCHUNK(o1, o0, -0x0c, g2, g3)
305 MOVE_SHORTCHUNK(o1, o0, -0x0e, g2, g3)
306 MOVE_SHORTCHUNK(o1, o0, -0x10, g2, g3)
30783:
308 EXT(byte_chunk, 83b, 54f)
309 subcc %o3, 0x10, %o3
310 add %o1, 0x10, %o1
311 bne byte_chunk
312 add %o0, 0x10, %o0
313
314short_end:
315 and %o2, 0xe, %o3
3162:
317 sethi %hi(short_table_end), %o5
318 sll %o3, 3, %o4
319 add %o0, %o3, %o0
320 sub %o5, %o4, %o5
321 add %o1, %o3, %o1
322 jmpl %o5 + %lo(short_table_end), %g0
323 andcc %o2, 1, %g0
32484:
325 MOVE_SHORTCHUNK(o1, o0, 0x0c, g2, g3)
326 MOVE_SHORTCHUNK(o1, o0, 0x0a, g2, g3)
327 MOVE_SHORTCHUNK(o1, o0, 0x08, g2, g3)
328 MOVE_SHORTCHUNK(o1, o0, 0x06, g2, g3)
329 MOVE_SHORTCHUNK(o1, o0, 0x04, g2, g3)
330 MOVE_SHORTCHUNK(o1, o0, 0x02, g2, g3)
331 MOVE_SHORTCHUNK(o1, o0, 0x00, g2, g3)
332short_table_end:
333 EXT(84b, short_table_end, 55f)
334 be 1f
335 nop
336 EX(ldub [%o1], %g2, add %g0, 1)
337 EX(stb %g2, [%o0], add %g0, 1)
3381:
339 retl
340 clr %o0
341
342short_aligned_end:
343 bne short_end
344 andcc %o2, 8, %g0
345
346 be 1f
347 andcc %o2, 4, %g0
348
349 EXO2(ld [%o1 + 0x00], %g2)
350 EXO2(ld [%o1 + 0x04], %g3)
351 add %o1, 8, %o1
352 EXO2(st %g2, [%o0 + 0x00])
353 EX(st %g3, [%o0 + 0x04], sub %o2, 4)
354 add %o0, 8, %o0
3551:
356 b copy_user_last7
357 mov %o2, %g1
358
359 .section .fixup,#alloc,#execinstr
360 .align 4
36197:
362 mov %o2, %g3
363fixupretl:
364 sethi %hi(PAGE_OFFSET), %g1
365 cmp %o0, %g1
366 blu 1f
367 cmp %o1, %g1
368 bgeu 1f
369 nop
370 save %sp, -64, %sp
371 mov %i0, %o0
372 call __bzero
373 mov %g3, %o1
374 restore
3751: retl
376 mov %g3, %o0
377
378/* exception routine sets %g2 to (broken_insn - first_insn)>>2 */
37950:
380/* This magic counts how many bytes are left when crash in MOVE_BIGCHUNK
381 * happens. This is derived from the amount ldd reads, st stores, etc.
382 * x = g2 % 12;
383 * g3 = g1 + g7 - ((g2 / 12) * 32 + (x < 4) ? 0 : (x - 4) * 4);
384 * o0 += (g2 / 12) * 32;
385 */
386 cmp %g2, 12
387 add %o0, %g7, %o0
388 bcs 1f
389 cmp %g2, 24
390 bcs 2f
391 cmp %g2, 36
392 bcs 3f
393 nop
394 sub %g2, 12, %g2
395 sub %g7, 32, %g7
3963: sub %g2, 12, %g2
397 sub %g7, 32, %g7
3982: sub %g2, 12, %g2
399 sub %g7, 32, %g7
4001: cmp %g2, 4
401 bcs,a 60f
402 clr %g2
403 sub %g2, 4, %g2
404 sll %g2, 2, %g2
40560: and %g1, 0x7f, %g3
406 sub %o0, %g7, %o0
407 add %g3, %g7, %g3
408 ba fixupretl
409 sub %g3, %g2, %g3
41051:
411/* i = 41 - g2; j = i % 6;
412 * g3 = (g1 & 15) + (i / 6) * 16 + (j < 4) ? (j + 1) * 4 : 16;
413 * o0 -= (i / 6) * 16 + 16;
414 */
415 neg %g2
416 and %g1, 0xf, %g1
417 add %g2, 41, %g2
418 add %o0, %g1, %o0
4191: cmp %g2, 6
420 bcs,a 2f
421 cmp %g2, 4
422 add %g1, 16, %g1
423 b 1b
424 sub %g2, 6, %g2
4252: bcc,a 2f
426 mov 16, %g2
427 inc %g2
428 sll %g2, 2, %g2
4292: add %g1, %g2, %g3
430 ba fixupretl
431 sub %o0, %g3, %o0
43252:
433/* g3 = g1 + g7 - (g2 / 8) * 32 + (g2 & 4) ? (g2 & 3) * 8 : 0;
434 o0 += (g2 / 8) * 32 */
435 andn %g2, 7, %g4
436 add %o0, %g7, %o0
437 andcc %g2, 4, %g0
438 and %g2, 3, %g2
439 sll %g4, 2, %g4
440 sll %g2, 3, %g2
441 bne 60b
442 sub %g7, %g4, %g7
443 ba 60b
444 clr %g2
44553:
446/* g3 = o3 + (o2 & 15) - (g2 & 8) - (g2 & 4) ? (g2 & 3) * 2 : 0;
447 o0 += (g2 & 8) */
448 and %g2, 3, %g4
449 andcc %g2, 4, %g0
450 and %g2, 8, %g2
451 sll %g4, 1, %g4
452 be 1f
453 add %o0, %g2, %o0
454 add %g2, %g4, %g2
4551: and %o2, 0xf, %g3
456 add %g3, %o3, %g3
457 ba fixupretl
458 sub %g3, %g2, %g3
45954:
460/* g3 = o3 + (o2 & 15) - (g2 / 4) * 2 - (g2 & 2) ? (g2 & 1) : 0;
461 o0 += (g2 / 4) * 2 */
462 srl %g2, 2, %o4
463 and %g2, 1, %o5
464 srl %g2, 1, %g2
465 add %o4, %o4, %o4
466 and %o5, %g2, %o5
467 and %o2, 0xf, %o2
468 add %o0, %o4, %o0
469 sub %o3, %o5, %o3
470 sub %o2, %o4, %o2
471 ba fixupretl
472 add %o2, %o3, %g3
47355:
474/* i = 27 - g2;
475 g3 = (o2 & 1) + i / 4 * 2 + !(i & 3);
476 o0 -= i / 4 * 2 + 1 */
477 neg %g2
478 and %o2, 1, %o2
479 add %g2, 27, %g2
480 srl %g2, 2, %o5
481 andcc %g2, 3, %g0
482 mov 1, %g2
483 add %o5, %o5, %o5
484 be,a 1f
485 clr %g2
4861: add %g2, %o5, %g3
487 sub %o0, %g3, %o0
488 ba fixupretl
489 add %g3, %o2, %g3
490
491 .globl __copy_user_end
492__copy_user_end:
diff --git a/arch/sparc/lib/debuglocks.c b/arch/sparc/lib/debuglocks.c
new file mode 100644
index 000000000000..fb182352782c
--- /dev/null
+++ b/arch/sparc/lib/debuglocks.c
@@ -0,0 +1,202 @@
1/* $Id: debuglocks.c,v 1.11 2001/09/20 00:35:31 davem Exp $
2 * debuglocks.c: Debugging versions of SMP locking primitives.
3 *
4 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1998-99 Anton Blanchard (anton@progsoc.uts.edu.au)
6 */
7
8#include <linux/kernel.h>
9#include <linux/sched.h>
10#include <linux/threads.h> /* For NR_CPUS */
11#include <linux/spinlock.h>
12#include <asm/psr.h>
13#include <asm/system.h>
14
15#ifdef CONFIG_SMP
16
17/* Some notes on how these debugging routines work. When a lock is acquired
18 * an extra debugging member lock->owner_pc is set to the caller of the lock
19 * acquisition routine. Right before releasing a lock, the debugging program
20 * counter is cleared to zero.
21 *
22 * Furthermore, since PC's are 4 byte aligned on Sparc, we stuff the CPU
23 * number of the owner in the lowest two bits.
24 */
25
26#define STORE_CALLER(A) __asm__ __volatile__("mov %%i7, %0" : "=r" (A));
27
28static inline void show(char *str, spinlock_t *lock, unsigned long caller)
29{
30 int cpu = smp_processor_id();
31
32 printk("%s(%p) CPU#%d stuck at %08lx, owner PC(%08lx):CPU(%lx)\n",str,
33 lock, cpu, caller, lock->owner_pc & ~3, lock->owner_pc & 3);
34}
35
36static inline void show_read(char *str, rwlock_t *lock, unsigned long caller)
37{
38 int cpu = smp_processor_id();
39
40 printk("%s(%p) CPU#%d stuck at %08lx, owner PC(%08lx):CPU(%lx)\n", str,
41 lock, cpu, caller, lock->owner_pc & ~3, lock->owner_pc & 3);
42}
43
44static inline void show_write(char *str, rwlock_t *lock, unsigned long caller)
45{
46 int cpu = smp_processor_id();
47 int i;
48
49 printk("%s(%p) CPU#%d stuck at %08lx, owner PC(%08lx):CPU(%lx)", str,
50 lock, cpu, caller, lock->owner_pc & ~3, lock->owner_pc & 3);
51
52 for(i = 0; i < NR_CPUS; i++)
53 printk(" reader[%d]=%08lx", i, lock->reader_pc[i]);
54
55 printk("\n");
56}
57
58#undef INIT_STUCK
59#define INIT_STUCK 100000000
60
61void _do_spin_lock(spinlock_t *lock, char *str)
62{
63 unsigned long caller;
64 unsigned long val;
65 int cpu = smp_processor_id();
66 int stuck = INIT_STUCK;
67
68 STORE_CALLER(caller);
69
70again:
71 __asm__ __volatile__("ldstub [%1], %0" : "=r" (val) : "r" (&(lock->lock)));
72 if(val) {
73 while(lock->lock) {
74 if (!--stuck) {
75 show(str, lock, caller);
76 stuck = INIT_STUCK;
77 }
78 barrier();
79 }
80 goto again;
81 }
82 lock->owner_pc = (cpu & 3) | (caller & ~3);
83}
84
85int _spin_trylock(spinlock_t *lock)
86{
87 unsigned long val;
88 unsigned long caller;
89 int cpu = smp_processor_id();
90
91 STORE_CALLER(caller);
92
93 __asm__ __volatile__("ldstub [%1], %0" : "=r" (val) : "r" (&(lock->lock)));
94 if(!val) {
95 /* We got it, record our identity for debugging. */
96 lock->owner_pc = (cpu & 3) | (caller & ~3);
97 }
98 return val == 0;
99}
100
101void _do_spin_unlock(spinlock_t *lock)
102{
103 lock->owner_pc = 0;
104 barrier();
105 lock->lock = 0;
106}
107
108void _do_read_lock(rwlock_t *rw, char *str)
109{
110 unsigned long caller;
111 unsigned long val;
112 int cpu = smp_processor_id();
113 int stuck = INIT_STUCK;
114
115 STORE_CALLER(caller);
116
117wlock_again:
118 __asm__ __volatile__("ldstub [%1 + 3], %0" : "=r" (val) : "r" (&(rw->lock)));
119 if(val) {
120 while(rw->lock & 0xff) {
121 if (!--stuck) {
122 show_read(str, rw, caller);
123 stuck = INIT_STUCK;
124 }
125 barrier();
126 }
127 goto wlock_again;
128 }
129
130 rw->reader_pc[cpu] = caller;
131 barrier();
132 rw->lock++;
133}
134
135void _do_read_unlock(rwlock_t *rw, char *str)
136{
137 unsigned long caller;
138 unsigned long val;
139 int cpu = smp_processor_id();
140 int stuck = INIT_STUCK;
141
142 STORE_CALLER(caller);
143
144wlock_again:
145 __asm__ __volatile__("ldstub [%1 + 3], %0" : "=r" (val) : "r" (&(rw->lock)));
146 if(val) {
147 while(rw->lock & 0xff) {
148 if (!--stuck) {
149 show_read(str, rw, caller);
150 stuck = INIT_STUCK;
151 }
152 barrier();
153 }
154 goto wlock_again;
155 }
156
157 rw->reader_pc[cpu] = 0;
158 barrier();
159 rw->lock -= 0x1ff;
160}
161
162void _do_write_lock(rwlock_t *rw, char *str)
163{
164 unsigned long caller;
165 unsigned long val;
166 int cpu = smp_processor_id();
167 int stuck = INIT_STUCK;
168
169 STORE_CALLER(caller);
170
171wlock_again:
172 __asm__ __volatile__("ldstub [%1 + 3], %0" : "=r" (val) : "r" (&(rw->lock)));
173 if(val) {
174wlock_wait:
175 while(rw->lock) {
176 if (!--stuck) {
177 show_write(str, rw, caller);
178 stuck = INIT_STUCK;
179 }
180 barrier();
181 }
182 goto wlock_again;
183 }
184
185 if (rw->lock & ~0xff) {
186 *(((unsigned char *)&rw->lock)+3) = 0;
187 barrier();
188 goto wlock_wait;
189 }
190
191 barrier();
192 rw->owner_pc = (cpu & 3) | (caller & ~3);
193}
194
195void _do_write_unlock(rwlock_t *rw)
196{
197 rw->owner_pc = 0;
198 barrier();
199 rw->lock = 0;
200}
201
202#endif /* SMP */
diff --git a/arch/sparc/lib/divdi3.S b/arch/sparc/lib/divdi3.S
new file mode 100644
index 000000000000..681b3683da9e
--- /dev/null
+++ b/arch/sparc/lib/divdi3.S
@@ -0,0 +1,295 @@
1/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
2
3This file is part of GNU CC.
4
5GNU CC is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
7the Free Software Foundation; either version 2, or (at your option)
8any later version.
9
10GNU CC is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with GNU CC; see the file COPYING. If not, write to
17the Free Software Foundation, 59 Temple Place - Suite 330,
18Boston, MA 02111-1307, USA. */
19
20 .data
21 .align 8
22 .globl __clz_tab
23__clz_tab:
24 .byte 0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5
25 .byte 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6
26 .byte 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
27 .byte 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
28 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
29 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
30 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
31 .byte 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
32 .size __clz_tab,256
33 .global .udiv
34
35 .text
36 .align 4
37 .globl __divdi3
38__divdi3:
39 save %sp,-104,%sp
40 cmp %i0,0
41 bge .LL40
42 mov 0,%l4
43 mov -1,%l4
44 sub %g0,%i1,%o0
45 mov %o0,%o5
46 subcc %g0,%o0,%g0
47 sub %g0,%i0,%o0
48 subx %o0,0,%o4
49 mov %o4,%i0
50 mov %o5,%i1
51.LL40:
52 cmp %i2,0
53 bge .LL84
54 mov %i3,%o4
55 xnor %g0,%l4,%l4
56 sub %g0,%i3,%o0
57 mov %o0,%o3
58 subcc %g0,%o0,%g0
59 sub %g0,%i2,%o0
60 subx %o0,0,%o2
61 mov %o2,%i2
62 mov %o3,%i3
63 mov %i3,%o4
64.LL84:
65 cmp %i2,0
66 bne .LL45
67 mov %i1,%i3
68 cmp %o4,%i0
69 bleu .LL46
70 mov %i3,%o1
71 mov 32,%g1
72 subcc %i0,%o4,%g0
731: bcs 5f
74 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
75 sub %i0,%o4,%i0 ! this kills msb of n
76 addx %i0,%i0,%i0 ! so this cannot give carry
77 subcc %g1,1,%g1
782: bne 1b
79 subcc %i0,%o4,%g0
80 bcs 3f
81 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
82 b 3f
83 sub %i0,%o4,%i0 ! this kills msb of n
844: sub %i0,%o4,%i0
855: addxcc %i0,%i0,%i0
86 bcc 2b
87 subcc %g1,1,%g1
88! Got carry from n. Subtract next step to cancel this carry.
89 bne 4b
90 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
91 sub %i0,%o4,%i0
923: xnor %o1,0,%o1
93 b .LL50
94 mov 0,%o2
95.LL46:
96 cmp %o4,0
97 bne .LL85
98 mov %i0,%o2
99 mov 1,%o0
100 call .udiv,0
101 mov 0,%o1
102 mov %o0,%o4
103 mov %i0,%o2
104.LL85:
105 mov 0,%g3
106 mov 32,%g1
107 subcc %g3,%o4,%g0
1081: bcs 5f
109 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
110 sub %g3,%o4,%g3 ! this kills msb of n
111 addx %g3,%g3,%g3 ! so this cannot give carry
112 subcc %g1,1,%g1
1132: bne 1b
114 subcc %g3,%o4,%g0
115 bcs 3f
116 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
117 b 3f
118 sub %g3,%o4,%g3 ! this kills msb of n
1194: sub %g3,%o4,%g3
1205: addxcc %g3,%g3,%g3
121 bcc 2b
122 subcc %g1,1,%g1
123! Got carry from n. Subtract next step to cancel this carry.
124 bne 4b
125 addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
126 sub %g3,%o4,%g3
1273: xnor %o2,0,%o2
128 mov %g3,%i0
129 mov %i3,%o1
130 mov 32,%g1
131 subcc %i0,%o4,%g0
1321: bcs 5f
133 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
134 sub %i0,%o4,%i0 ! this kills msb of n
135 addx %i0,%i0,%i0 ! so this cannot give carry
136 subcc %g1,1,%g1
1372: bne 1b
138 subcc %i0,%o4,%g0
139 bcs 3f
140 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
141 b 3f
142 sub %i0,%o4,%i0 ! this kills msb of n
1434: sub %i0,%o4,%i0
1445: addxcc %i0,%i0,%i0
145 bcc 2b
146 subcc %g1,1,%g1
147! Got carry from n. Subtract next step to cancel this carry.
148 bne 4b
149 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
150 sub %i0,%o4,%i0
1513: xnor %o1,0,%o1
152 b .LL86
153 mov %o1,%l1
154.LL45:
155 cmp %i2,%i0
156 bleu .LL51
157 sethi %hi(65535),%o0
158 b .LL78
159 mov 0,%o1
160.LL51:
161 or %o0,%lo(65535),%o0
162 cmp %i2,%o0
163 bgu .LL58
164 mov %i2,%o1
165 cmp %i2,256
166 addx %g0,-1,%o0
167 b .LL64
168 and %o0,8,%o2
169.LL58:
170 sethi %hi(16777215),%o0
171 or %o0,%lo(16777215),%o0
172 cmp %i2,%o0
173 bgu .LL64
174 mov 24,%o2
175 mov 16,%o2
176.LL64:
177 srl %o1,%o2,%o0
178 sethi %hi(__clz_tab),%o1
179 or %o1,%lo(__clz_tab),%o1
180 ldub [%o0+%o1],%o0
181 add %o0,%o2,%o0
182 mov 32,%o1
183 subcc %o1,%o0,%o3
184 bne,a .LL72
185 sub %o1,%o3,%o1
186 cmp %i0,%i2
187 bgu .LL74
188 cmp %i3,%o4
189 blu .LL78
190 mov 0,%o1
191.LL74:
192 b .LL78
193 mov 1,%o1
194.LL72:
195 sll %i2,%o3,%o2
196 srl %o4,%o1,%o0
197 or %o2,%o0,%i2
198 sll %o4,%o3,%o4
199 srl %i0,%o1,%o2
200 sll %i0,%o3,%o0
201 srl %i3,%o1,%o1
202 or %o0,%o1,%i0
203 sll %i3,%o3,%i3
204 mov %i0,%o1
205 mov 32,%g1
206 subcc %o2,%i2,%g0
2071: bcs 5f
208 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
209 sub %o2,%i2,%o2 ! this kills msb of n
210 addx %o2,%o2,%o2 ! so this cannot give carry
211 subcc %g1,1,%g1
2122: bne 1b
213 subcc %o2,%i2,%g0
214 bcs 3f
215 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
216 b 3f
217 sub %o2,%i2,%o2 ! this kills msb of n
2184: sub %o2,%i2,%o2
2195: addxcc %o2,%o2,%o2
220 bcc 2b
221 subcc %g1,1,%g1
222! Got carry from n. Subtract next step to cancel this carry.
223 bne 4b
224 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
225 sub %o2,%i2,%o2
2263: xnor %o1,0,%o1
227 mov %o2,%i0
228 wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
229 sra %o4,31,%g2 ! Do not move this insn
230 and %o1,%g2,%g2 ! Do not move this insn
231 andcc %g0,0,%g1 ! Do not move this insn
232 mulscc %g1,%o4,%g1
233 mulscc %g1,%o4,%g1
234 mulscc %g1,%o4,%g1
235 mulscc %g1,%o4,%g1
236 mulscc %g1,%o4,%g1
237 mulscc %g1,%o4,%g1
238 mulscc %g1,%o4,%g1
239 mulscc %g1,%o4,%g1
240 mulscc %g1,%o4,%g1
241 mulscc %g1,%o4,%g1
242 mulscc %g1,%o4,%g1
243 mulscc %g1,%o4,%g1
244 mulscc %g1,%o4,%g1
245 mulscc %g1,%o4,%g1
246 mulscc %g1,%o4,%g1
247 mulscc %g1,%o4,%g1
248 mulscc %g1,%o4,%g1
249 mulscc %g1,%o4,%g1
250 mulscc %g1,%o4,%g1
251 mulscc %g1,%o4,%g1
252 mulscc %g1,%o4,%g1
253 mulscc %g1,%o4,%g1
254 mulscc %g1,%o4,%g1
255 mulscc %g1,%o4,%g1
256 mulscc %g1,%o4,%g1
257 mulscc %g1,%o4,%g1
258 mulscc %g1,%o4,%g1
259 mulscc %g1,%o4,%g1
260 mulscc %g1,%o4,%g1
261 mulscc %g1,%o4,%g1
262 mulscc %g1,%o4,%g1
263 mulscc %g1,%o4,%g1
264 mulscc %g1,0,%g1
265 add %g1,%g2,%o0
266 rd %y,%o2
267 cmp %o0,%i0
268 bgu,a .LL78
269 add %o1,-1,%o1
270 bne,a .LL50
271 mov 0,%o2
272 cmp %o2,%i3
273 bleu .LL50
274 mov 0,%o2
275 add %o1,-1,%o1
276.LL78:
277 mov 0,%o2
278.LL50:
279 mov %o1,%l1
280.LL86:
281 mov %o2,%l0
282 mov %l0,%i0
283 mov %l1,%i1
284 cmp %l4,0
285 be .LL81
286 sub %g0,%i1,%o0
287 mov %o0,%l3
288 subcc %g0,%o0,%g0
289 sub %g0,%i0,%o0
290 subx %o0,0,%l2
291 mov %l2,%i0
292 mov %l3,%i1
293.LL81:
294 ret
295 restore
diff --git a/arch/sparc/lib/locks.S b/arch/sparc/lib/locks.S
new file mode 100644
index 000000000000..95fa48424967
--- /dev/null
+++ b/arch/sparc/lib/locks.S
@@ -0,0 +1,72 @@
1/* $Id: locks.S,v 1.16 2000/02/26 11:02:47 anton Exp $
2 * locks.S: SMP low-level lock primitives on Sparc.
3 *
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1998 Anton Blanchard (anton@progsoc.uts.edu.au)
6 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
7 */
8
9#include <asm/ptrace.h>
10#include <asm/psr.h>
11#include <asm/smp.h>
12#include <asm/spinlock.h>
13
14 .text
15 .align 4
16
17 /* Read/writer locks, as usual this is overly clever to make it
18 * as fast as possible.
19 */
20
21 /* caches... */
22___rw_read_enter_spin_on_wlock:
23 orcc %g2, 0x0, %g0
24 be,a ___rw_read_enter
25 ldstub [%g1 + 3], %g2
26 b ___rw_read_enter_spin_on_wlock
27 ldub [%g1 + 3], %g2
28___rw_read_exit_spin_on_wlock:
29 orcc %g2, 0x0, %g0
30 be,a ___rw_read_exit
31 ldstub [%g1 + 3], %g2
32 b ___rw_read_exit_spin_on_wlock
33 ldub [%g1 + 3], %g2
34___rw_write_enter_spin_on_wlock:
35 orcc %g2, 0x0, %g0
36 be,a ___rw_write_enter
37 ldstub [%g1 + 3], %g2
38 b ___rw_write_enter_spin_on_wlock
39 ld [%g1], %g2
40
41 .globl ___rw_read_enter
42___rw_read_enter:
43 orcc %g2, 0x0, %g0
44 bne,a ___rw_read_enter_spin_on_wlock
45 ldub [%g1 + 3], %g2
46 ld [%g1], %g2
47 add %g2, 1, %g2
48 st %g2, [%g1]
49 retl
50 mov %g4, %o7
51
52 .globl ___rw_read_exit
53___rw_read_exit:
54 orcc %g2, 0x0, %g0
55 bne,a ___rw_read_exit_spin_on_wlock
56 ldub [%g1 + 3], %g2
57 ld [%g1], %g2
58 sub %g2, 0x1ff, %g2
59 st %g2, [%g1]
60 retl
61 mov %g4, %o7
62
63 .globl ___rw_write_enter
64___rw_write_enter:
65 orcc %g2, 0x0, %g0
66 bne ___rw_write_enter_spin_on_wlock
67 ld [%g1], %g2
68 andncc %g2, 0xff, %g0
69 bne,a ___rw_write_enter_spin_on_wlock
70 stb %g0, [%g1 + 3]
71 retl
72 mov %g4, %o7
diff --git a/arch/sparc/lib/lshrdi3.S b/arch/sparc/lib/lshrdi3.S
new file mode 100644
index 000000000000..35abf5b2bd15
--- /dev/null
+++ b/arch/sparc/lib/lshrdi3.S
@@ -0,0 +1,27 @@
1/* $Id: lshrdi3.S,v 1.1 1999/03/21 06:37:45 davem Exp $ */
2
3 .globl __lshrdi3
4__lshrdi3:
5 cmp %o2, 0
6 be 3f
7 mov 0x20, %g2
8
9 sub %g2, %o2, %g2
10 cmp %g2, 0
11 bg 1f
12 srl %o0, %o2, %o4
13
14 clr %o4
15 neg %g2
16 b 2f
17 srl %o0, %g2, %o5
181:
19 sll %o0, %g2, %g3
20 srl %o1, %o2, %g2
21 or %g2, %g3, %o5
222:
23 mov %o4, %o0
24 mov %o5, %o1
253:
26 retl
27 nop
diff --git a/arch/sparc/lib/memcmp.S b/arch/sparc/lib/memcmp.S
new file mode 100644
index 000000000000..cb4bdb0cc2af
--- /dev/null
+++ b/arch/sparc/lib/memcmp.S
@@ -0,0 +1,312 @@
1 .text
2 .align 4
3 .global __memcmp, memcmp
4__memcmp:
5memcmp:
6#if 1
7 cmp %o2, 0
8 ble L3
9 mov 0, %g3
10L5:
11 ldub [%o0], %g2
12 ldub [%o1], %g3
13 sub %g2, %g3, %g2
14 mov %g2, %g3
15 sll %g2, 24, %g2
16
17 cmp %g2, 0
18 bne L3
19 add %o0, 1, %o0
20
21 add %o2, -1, %o2
22
23 cmp %o2, 0
24 bg L5
25 add %o1, 1, %o1
26L3:
27 sll %g3, 24, %o0
28 sra %o0, 24, %o0
29
30 retl
31 nop
32#else
33 save %sp, -104, %sp
34 mov %i2, %o4
35 mov %i0, %o0
36
37 cmp %o4, 15
38 ble L72
39 mov %i1, %i2
40
41 andcc %i2, 3, %g0
42 be L161
43 andcc %o0, 3, %g2
44L75:
45 ldub [%o0], %g3
46 ldub [%i2], %g2
47 add %o0,1, %o0
48
49 subcc %g3, %g2, %i0
50 bne L156
51 add %i2, 1, %i2
52
53 andcc %i2, 3, %g0
54 bne L75
55 add %o4, -1, %o4
56
57 andcc %o0, 3, %g2
58L161:
59 bne,a L78
60 mov %i2, %i1
61
62 mov %o0, %i5
63 mov %i2, %i3
64 srl %o4, 2, %i4
65
66 cmp %i4, 0
67 bge L93
68 mov %i4, %g2
69
70 add %i4, 3, %g2
71L93:
72 sra %g2, 2, %g2
73 sll %g2, 2, %g2
74 sub %i4, %g2, %g2
75
76 cmp %g2, 1
77 be,a L88
78 add %o0, 4, %i5
79
80 bg L94
81 cmp %g2, 2
82
83 cmp %g2, 0
84 be,a L86
85 ld [%o0], %g3
86
87 b L162
88 ld [%i5], %g3
89L94:
90 be L81
91 cmp %g2, 3
92
93 be,a L83
94 add %o0, -4, %i5
95
96 b L162
97 ld [%i5], %g3
98L81:
99 add %o0, -8, %i5
100 ld [%o0], %g3
101 add %i2, -8, %i3
102 ld [%i2], %g2
103
104 b L82
105 add %i4, 2, %i4
106L83:
107 ld [%o0], %g4
108 add %i2, -4, %i3
109 ld [%i2], %g1
110
111 b L84
112 add %i4, 1, %i4
113L86:
114 b L87
115 ld [%i2], %g2
116L88:
117 add %i2, 4, %i3
118 ld [%o0], %g4
119 add %i4, -1, %i4
120 ld [%i2], %g1
121L95:
122 ld [%i5], %g3
123L162:
124 cmp %g4, %g1
125 be L87
126 ld [%i3], %g2
127
128 cmp %g4, %g1
129L163:
130 bleu L114
131 mov -1, %i0
132
133 b L114
134 mov 1, %i0
135L87:
136 ld [%i5 + 4], %g4
137 cmp %g3, %g2
138 bne L163
139 ld [%i3 + 4], %g1
140L84:
141 ld [%i5 + 8], %g3
142
143 cmp %g4, %g1
144 bne L163
145 ld [%i3 + 8], %g2
146L82:
147 ld [%i5 + 12], %g4
148 cmp %g3, %g2
149 bne L163
150 ld [%i3 + 12], %g1
151
152 add %i5, 16, %i5
153
154 addcc %i4, -4, %i4
155 bne L95
156 add %i3, 16, %i3
157
158 cmp %g4, %g1
159 bne L163
160 nop
161
162 b L114
163 mov 0, %i0
164L78:
165 srl %o4, 2, %i0
166 and %o0, -4, %i3
167 orcc %i0, %g0, %g3
168 sll %g2, 3, %o7
169 mov 32, %g2
170
171 bge L129
172 sub %g2, %o7, %o1
173
174 add %i0, 3, %g3
175L129:
176 sra %g3, 2, %g2
177 sll %g2, 2, %g2
178 sub %i0, %g2, %g2
179
180 cmp %g2, 1
181 be,a L124
182 ld [%i3], %o3
183
184 bg L130
185 cmp %g2, 2
186
187 cmp %g2, 0
188 be,a L122
189 ld [%i3], %o2
190
191 b L164
192 sll %o3, %o7, %g3
193L130:
194 be L117
195 cmp %g2, 3
196
197 be,a L119
198 ld [%i3], %g1
199
200 b L164
201 sll %o3, %o7, %g3
202L117:
203 ld [%i3], %g4
204 add %i2, -8, %i1
205 ld [%i3 + 4], %o3
206 add %i0, 2, %i0
207 ld [%i2], %i4
208
209 b L118
210 add %i3, -4, %i3
211L119:
212 ld [%i3 + 4], %g4
213 add %i2, -4, %i1
214 ld [%i2], %i5
215
216 b L120
217 add %i0, 1, %i0
218L122:
219 ld [%i3 + 4], %g1
220 ld [%i2], %i4
221
222 b L123
223 add %i3, 4, %i3
224L124:
225 add %i2, 4, %i1
226 ld [%i3 + 4], %o2
227 add %i0, -1, %i0
228 ld [%i2], %i5
229 add %i3, 8, %i3
230L131:
231 sll %o3, %o7, %g3
232L164:
233 srl %o2, %o1, %g2
234 ld [%i3], %g1
235 or %g3, %g2, %g3
236
237 cmp %g3, %i5
238 bne L163
239 ld [%i1], %i4
240L123:
241 sll %o2, %o7, %g3
242 srl %g1, %o1, %g2
243 ld [%i3 + 4], %g4
244 or %g3, %g2, %g3
245
246 cmp %g3, %i4
247 bne L163
248 ld [%i1 + 4], %i5
249L120:
250 sll %g1, %o7, %g3
251 srl %g4, %o1, %g2
252 ld [%i3 + 8], %o3
253 or %g3, %g2, %g3
254
255 cmp %g3, %i5
256 bne L163
257 ld [%i1 + 8], %i4
258L118:
259 sll %g4, %o7, %g3
260 srl %o3, %o1, %g2
261 ld [%i3 + 12], %o2
262 or %g3, %g2, %g3
263
264 cmp %g3, %i4
265 bne L163
266 ld [%i1 + 12], %i5
267
268 add %i3, 16, %i3
269 addcc %i0, -4, %i0
270 bne L131
271 add %i1, 16, %i1
272
273 sll %o3, %o7, %g3
274 srl %o2, %o1, %g2
275 or %g3, %g2, %g3
276
277 cmp %g3, %i5
278 be,a L114
279 mov 0, %i0
280
281 b,a L163
282L114:
283 cmp %i0, 0
284 bne L156
285 and %o4, -4, %g2
286
287 add %o0, %g2, %o0
288 add %i2, %g2, %i2
289 and %o4, 3, %o4
290L72:
291 cmp %o4, 0
292 be L156
293 mov 0, %i0
294
295 ldub [%o0], %g3
296L165:
297 ldub [%i2], %g2
298 add %o0, 1, %o0
299
300 subcc %g3, %g2, %i0
301 bne L156
302 add %i2, 1, %i2
303
304 addcc %o4, -1, %o4
305 bne,a L165
306 ldub [%o0], %g3
307
308 mov 0, %i0
309L156:
310 ret
311 restore
312#endif
diff --git a/arch/sparc/lib/memcpy.S b/arch/sparc/lib/memcpy.S
new file mode 100644
index 000000000000..ce10bc869af9
--- /dev/null
+++ b/arch/sparc/lib/memcpy.S
@@ -0,0 +1,1150 @@
1/* memcpy.S: Sparc optimized memcpy and memmove code
2 * Hand optimized from GNU libc's memcpy and memmove
3 * Copyright (C) 1991,1996 Free Software Foundation
4 * Copyright (C) 1995 Linus Torvalds (Linus.Torvalds@helsinki.fi)
5 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
6 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
7 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 */
9
10#ifdef __KERNEL__
11
12#define FUNC(x) \
13 .globl x; \
14 .type x,@function; \
15 .align 4; \
16x:
17
18#undef FASTER_REVERSE
19#undef FASTER_NONALIGNED
20#define FASTER_ALIGNED
21
22/* In kernel these functions don't return a value.
23 * One should use macros in asm/string.h for that purpose.
24 * We return 0, so that bugs are more apparent.
25 */
26#define SETUP_RETL
27#define RETL_INSN clr %o0
28
29#else
30
31/* libc */
32
33#include "DEFS.h"
34
35#define FASTER_REVERSE
36#define FASTER_NONALIGNED
37#define FASTER_ALIGNED
38
39#define SETUP_RETL mov %o0, %g6
40#define RETL_INSN mov %g6, %o0
41
42#endif
43
44/* Both these macros have to start with exactly the same insn */
45#define MOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
46 ldd [%src + (offset) + 0x00], %t0; \
47 ldd [%src + (offset) + 0x08], %t2; \
48 ldd [%src + (offset) + 0x10], %t4; \
49 ldd [%src + (offset) + 0x18], %t6; \
50 st %t0, [%dst + (offset) + 0x00]; \
51 st %t1, [%dst + (offset) + 0x04]; \
52 st %t2, [%dst + (offset) + 0x08]; \
53 st %t3, [%dst + (offset) + 0x0c]; \
54 st %t4, [%dst + (offset) + 0x10]; \
55 st %t5, [%dst + (offset) + 0x14]; \
56 st %t6, [%dst + (offset) + 0x18]; \
57 st %t7, [%dst + (offset) + 0x1c];
58
59#define MOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
60 ldd [%src + (offset) + 0x00], %t0; \
61 ldd [%src + (offset) + 0x08], %t2; \
62 ldd [%src + (offset) + 0x10], %t4; \
63 ldd [%src + (offset) + 0x18], %t6; \
64 std %t0, [%dst + (offset) + 0x00]; \
65 std %t2, [%dst + (offset) + 0x08]; \
66 std %t4, [%dst + (offset) + 0x10]; \
67 std %t6, [%dst + (offset) + 0x18];
68
69#define MOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
70 ldd [%src - (offset) - 0x10], %t0; \
71 ldd [%src - (offset) - 0x08], %t2; \
72 st %t0, [%dst - (offset) - 0x10]; \
73 st %t1, [%dst - (offset) - 0x0c]; \
74 st %t2, [%dst - (offset) - 0x08]; \
75 st %t3, [%dst - (offset) - 0x04];
76
77#define MOVE_LASTALIGNCHUNK(src, dst, offset, t0, t1, t2, t3) \
78 ldd [%src - (offset) - 0x10], %t0; \
79 ldd [%src - (offset) - 0x08], %t2; \
80 std %t0, [%dst - (offset) - 0x10]; \
81 std %t2, [%dst - (offset) - 0x08];
82
83#define MOVE_SHORTCHUNK(src, dst, offset, t0, t1) \
84 ldub [%src - (offset) - 0x02], %t0; \
85 ldub [%src - (offset) - 0x01], %t1; \
86 stb %t0, [%dst - (offset) - 0x02]; \
87 stb %t1, [%dst - (offset) - 0x01];
88
89/* Both these macros have to start with exactly the same insn */
90#define RMOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
91 ldd [%src - (offset) - 0x20], %t0; \
92 ldd [%src - (offset) - 0x18], %t2; \
93 ldd [%src - (offset) - 0x10], %t4; \
94 ldd [%src - (offset) - 0x08], %t6; \
95 st %t0, [%dst - (offset) - 0x20]; \
96 st %t1, [%dst - (offset) - 0x1c]; \
97 st %t2, [%dst - (offset) - 0x18]; \
98 st %t3, [%dst - (offset) - 0x14]; \
99 st %t4, [%dst - (offset) - 0x10]; \
100 st %t5, [%dst - (offset) - 0x0c]; \
101 st %t6, [%dst - (offset) - 0x08]; \
102 st %t7, [%dst - (offset) - 0x04];
103
104#define RMOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, t7) \
105 ldd [%src - (offset) - 0x20], %t0; \
106 ldd [%src - (offset) - 0x18], %t2; \
107 ldd [%src - (offset) - 0x10], %t4; \
108 ldd [%src - (offset) - 0x08], %t6; \
109 std %t0, [%dst - (offset) - 0x20]; \
110 std %t2, [%dst - (offset) - 0x18]; \
111 std %t4, [%dst - (offset) - 0x10]; \
112 std %t6, [%dst - (offset) - 0x08];
113
114#define RMOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \
115 ldd [%src + (offset) + 0x00], %t0; \
116 ldd [%src + (offset) + 0x08], %t2; \
117 st %t0, [%dst + (offset) + 0x00]; \
118 st %t1, [%dst + (offset) + 0x04]; \
119 st %t2, [%dst + (offset) + 0x08]; \
120 st %t3, [%dst + (offset) + 0x0c];
121
122#define RMOVE_SHORTCHUNK(src, dst, offset, t0, t1) \
123 ldub [%src + (offset) + 0x00], %t0; \
124 ldub [%src + (offset) + 0x01], %t1; \
125 stb %t0, [%dst + (offset) + 0x00]; \
126 stb %t1, [%dst + (offset) + 0x01];
127
128#define SMOVE_CHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, prev, shil, shir, offset2) \
129 ldd [%src + (offset) + 0x00], %t0; \
130 ldd [%src + (offset) + 0x08], %t2; \
131 srl %t0, shir, %t5; \
132 srl %t1, shir, %t6; \
133 sll %t0, shil, %t0; \
134 or %t5, %prev, %t5; \
135 sll %t1, shil, %prev; \
136 or %t6, %t0, %t0; \
137 srl %t2, shir, %t1; \
138 srl %t3, shir, %t6; \
139 sll %t2, shil, %t2; \
140 or %t1, %prev, %t1; \
141 std %t4, [%dst + (offset) + (offset2) - 0x04]; \
142 std %t0, [%dst + (offset) + (offset2) + 0x04]; \
143 sll %t3, shil, %prev; \
144 or %t6, %t2, %t4;
145
146#define SMOVE_ALIGNCHUNK(src, dst, offset, t0, t1, t2, t3, t4, t5, t6, prev, shil, shir, offset2) \
147 ldd [%src + (offset) + 0x00], %t0; \
148 ldd [%src + (offset) + 0x08], %t2; \
149 srl %t0, shir, %t4; \
150 srl %t1, shir, %t5; \
151 sll %t0, shil, %t6; \
152 or %t4, %prev, %t0; \
153 sll %t1, shil, %prev; \
154 or %t5, %t6, %t1; \
155 srl %t2, shir, %t4; \
156 srl %t3, shir, %t5; \
157 sll %t2, shil, %t6; \
158 or %t4, %prev, %t2; \
159 sll %t3, shil, %prev; \
160 or %t5, %t6, %t3; \
161 std %t0, [%dst + (offset) + (offset2) + 0x00]; \
162 std %t2, [%dst + (offset) + (offset2) + 0x08];
163
164 .text
165 .align 4
166
167#ifdef FASTER_REVERSE
168
16970: /* rdword_align */
170
171 andcc %o1, 1, %g0
172 be 4f
173 andcc %o1, 2, %g0
174
175 ldub [%o1 - 1], %g2
176 sub %o1, 1, %o1
177 stb %g2, [%o0 - 1]
178 sub %o2, 1, %o2
179 be 3f
180 sub %o0, 1, %o0
1814:
182 lduh [%o1 - 2], %g2
183 sub %o1, 2, %o1
184 sth %g2, [%o0 - 2]
185 sub %o2, 2, %o2
186 b 3f
187 sub %o0, 2, %o0
188
189#endif /* FASTER_REVERSE */
190
1910:
192 retl
193 nop ! Only bcopy returns here and it retuns void...
194
195#ifdef __KERNEL__
196FUNC(amemmove)
197FUNC(__memmove)
198#endif
199FUNC(memmove)
200 cmp %o0, %o1
201 SETUP_RETL
202 bleu 9f
203 sub %o0, %o1, %o4
204
205 add %o1, %o2, %o3
206 cmp %o3, %o0
207 bleu 0f
208 andcc %o4, 3, %o5
209
210#ifndef FASTER_REVERSE
211
212 add %o1, %o2, %o1
213 add %o0, %o2, %o0
214 sub %o1, 1, %o1
215 sub %o0, 1, %o0
216
2171: /* reverse_bytes */
218
219 ldub [%o1], %o4
220 subcc %o2, 1, %o2
221 stb %o4, [%o0]
222 sub %o1, 1, %o1
223 bne 1b
224 sub %o0, 1, %o0
225
226 retl
227 RETL_INSN
228
229#else /* FASTER_REVERSE */
230
231 add %o1, %o2, %o1
232 add %o0, %o2, %o0
233 bne 77f
234 cmp %o2, 15
235 bleu 91f
236 andcc %o1, 3, %g0
237 bne 70b
2383:
239 andcc %o1, 4, %g0
240
241 be 2f
242 mov %o2, %g1
243
244 ld [%o1 - 4], %o4
245 sub %g1, 4, %g1
246 st %o4, [%o0 - 4]
247 sub %o1, 4, %o1
248 sub %o0, 4, %o0
2492:
250 andcc %g1, 0xffffff80, %g7
251 be 3f
252 andcc %o0, 4, %g0
253
254 be 74f + 4
2555:
256 RMOVE_BIGCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
257 RMOVE_BIGCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
258 RMOVE_BIGCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
259 RMOVE_BIGCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
260 subcc %g7, 128, %g7
261 sub %o1, 128, %o1
262 bne 5b
263 sub %o0, 128, %o0
2643:
265 andcc %g1, 0x70, %g7
266 be 72f
267 andcc %g1, 8, %g0
268
269 sethi %hi(72f), %o5
270 srl %g7, 1, %o4
271 add %g7, %o4, %o4
272 sub %o1, %g7, %o1
273 sub %o5, %o4, %o5
274 jmpl %o5 + %lo(72f), %g0
275 sub %o0, %g7, %o0
276
27771: /* rmemcpy_table */
278 RMOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
279 RMOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
280 RMOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
281 RMOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
282 RMOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
283 RMOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
284 RMOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
285
28672: /* rmemcpy_table_end */
287
288 be 73f
289 andcc %g1, 4, %g0
290
291 ldd [%o1 - 0x08], %g2
292 sub %o0, 8, %o0
293 sub %o1, 8, %o1
294 st %g2, [%o0]
295 st %g3, [%o0 + 0x04]
296
29773: /* rmemcpy_last7 */
298
299 be 1f
300 andcc %g1, 2, %g0
301
302 ld [%o1 - 4], %g2
303 sub %o1, 4, %o1
304 st %g2, [%o0 - 4]
305 sub %o0, 4, %o0
3061:
307 be 1f
308 andcc %g1, 1, %g0
309
310 lduh [%o1 - 2], %g2
311 sub %o1, 2, %o1
312 sth %g2, [%o0 - 2]
313 sub %o0, 2, %o0
3141:
315 be 1f
316 nop
317
318 ldub [%o1 - 1], %g2
319 stb %g2, [%o0 - 1]
3201:
321 retl
322 RETL_INSN
323
32474: /* rldd_std */
325 RMOVE_BIGALIGNCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
326 RMOVE_BIGALIGNCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
327 RMOVE_BIGALIGNCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
328 RMOVE_BIGALIGNCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
329 subcc %g7, 128, %g7
330 sub %o1, 128, %o1
331 bne 74b
332 sub %o0, 128, %o0
333
334 andcc %g1, 0x70, %g7
335 be 72b
336 andcc %g1, 8, %g0
337
338 sethi %hi(72b), %o5
339 srl %g7, 1, %o4
340 add %g7, %o4, %o4
341 sub %o1, %g7, %o1
342 sub %o5, %o4, %o5
343 jmpl %o5 + %lo(72b), %g0
344 sub %o0, %g7, %o0
345
34675: /* rshort_end */
347
348 and %o2, 0xe, %o3
3492:
350 sethi %hi(76f), %o5
351 sll %o3, 3, %o4
352 sub %o0, %o3, %o0
353 sub %o5, %o4, %o5
354 sub %o1, %o3, %o1
355 jmpl %o5 + %lo(76f), %g0
356 andcc %o2, 1, %g0
357
358 RMOVE_SHORTCHUNK(o1, o0, 0x0c, g2, g3)
359 RMOVE_SHORTCHUNK(o1, o0, 0x0a, g2, g3)
360 RMOVE_SHORTCHUNK(o1, o0, 0x08, g2, g3)
361 RMOVE_SHORTCHUNK(o1, o0, 0x06, g2, g3)
362 RMOVE_SHORTCHUNK(o1, o0, 0x04, g2, g3)
363 RMOVE_SHORTCHUNK(o1, o0, 0x02, g2, g3)
364 RMOVE_SHORTCHUNK(o1, o0, 0x00, g2, g3)
365
36676: /* rshort_table_end */
367
368 be 1f
369 nop
370 ldub [%o1 - 1], %g2
371 stb %g2, [%o0 - 1]
3721:
373 retl
374 RETL_INSN
375
37691: /* rshort_aligned_end */
377
378 bne 75b
379 andcc %o2, 8, %g0
380
381 be 1f
382 andcc %o2, 4, %g0
383
384 ld [%o1 - 0x08], %g2
385 ld [%o1 - 0x04], %g3
386 sub %o1, 8, %o1
387 st %g2, [%o0 - 0x08]
388 st %g3, [%o0 - 0x04]
389 sub %o0, 8, %o0
3901:
391 b 73b
392 mov %o2, %g1
393
39477: /* rnon_aligned */
395 cmp %o2, 15
396 bleu 75b
397 andcc %o0, 3, %g0
398 be 64f
399 andcc %o0, 1, %g0
400 be 63f
401 andcc %o0, 2, %g0
402 ldub [%o1 - 1], %g5
403 sub %o1, 1, %o1
404 stb %g5, [%o0 - 1]
405 sub %o0, 1, %o0
406 be 64f
407 sub %o2, 1, %o2
40863:
409 ldub [%o1 - 1], %g5
410 sub %o1, 2, %o1
411 stb %g5, [%o0 - 1]
412 sub %o0, 2, %o0
413 ldub [%o1], %g5
414 sub %o2, 2, %o2
415 stb %g5, [%o0]
41664:
417 and %o1, 3, %g2
418 and %o1, -4, %o1
419 and %o2, 0xc, %g3
420 add %o1, 4, %o1
421 cmp %g3, 4
422 sll %g2, 3, %g4
423 mov 32, %g2
424 be 4f
425 sub %g2, %g4, %g7
426
427 blu 3f
428 cmp %g3, 8
429
430 be 2f
431 srl %o2, 2, %g3
432
433 ld [%o1 - 4], %o3
434 add %o0, -8, %o0
435 ld [%o1 - 8], %o4
436 add %o1, -16, %o1
437 b 7f
438 add %g3, 1, %g3
4392:
440 ld [%o1 - 4], %o4
441 add %o0, -4, %o0
442 ld [%o1 - 8], %g1
443 add %o1, -12, %o1
444 b 8f
445 add %g3, 2, %g3
4463:
447 ld [%o1 - 4], %o5
448 add %o0, -12, %o0
449 ld [%o1 - 8], %o3
450 add %o1, -20, %o1
451 b 6f
452 srl %o2, 2, %g3
4534:
454 ld [%o1 - 4], %g1
455 srl %o2, 2, %g3
456 ld [%o1 - 8], %o5
457 add %o1, -24, %o1
458 add %o0, -16, %o0
459 add %g3, -1, %g3
460
461 ld [%o1 + 12], %o3
4625:
463 sll %o5, %g4, %g2
464 srl %g1, %g7, %g5
465 or %g2, %g5, %g2
466 st %g2, [%o0 + 12]
4676:
468 ld [%o1 + 8], %o4
469 sll %o3, %g4, %g2
470 srl %o5, %g7, %g5
471 or %g2, %g5, %g2
472 st %g2, [%o0 + 8]
4737:
474 ld [%o1 + 4], %g1
475 sll %o4, %g4, %g2
476 srl %o3, %g7, %g5
477 or %g2, %g5, %g2
478 st %g2, [%o0 + 4]
4798:
480 ld [%o1], %o5
481 sll %g1, %g4, %g2
482 srl %o4, %g7, %g5
483 addcc %g3, -4, %g3
484 or %g2, %g5, %g2
485 add %o1, -16, %o1
486 st %g2, [%o0]
487 add %o0, -16, %o0
488 bne,a 5b
489 ld [%o1 + 12], %o3
490 sll %o5, %g4, %g2
491 srl %g1, %g7, %g5
492 srl %g4, 3, %g3
493 or %g2, %g5, %g2
494 add %o1, %g3, %o1
495 andcc %o2, 2, %g0
496 st %g2, [%o0 + 12]
497 be 1f
498 andcc %o2, 1, %g0
499
500 ldub [%o1 + 15], %g5
501 add %o1, -2, %o1
502 stb %g5, [%o0 + 11]
503 add %o0, -2, %o0
504 ldub [%o1 + 16], %g5
505 stb %g5, [%o0 + 12]
5061:
507 be 1f
508 nop
509 ldub [%o1 + 15], %g5
510 stb %g5, [%o0 + 11]
5111:
512 retl
513 RETL_INSN
514
515#endif /* FASTER_REVERSE */
516
517/* NOTE: This code is executed just for the cases,
518 where %src (=%o1) & 3 is != 0.
519 We need to align it to 4. So, for (%src & 3)
520 1 we need to do ldub,lduh
521 2 lduh
522 3 just ldub
523 so even if it looks weird, the branches
524 are correct here. -jj
525 */
52678: /* dword_align */
527
528 andcc %o1, 1, %g0
529 be 4f
530 andcc %o1, 2, %g0
531
532 ldub [%o1], %g2
533 add %o1, 1, %o1
534 stb %g2, [%o0]
535 sub %o2, 1, %o2
536 bne 3f
537 add %o0, 1, %o0
5384:
539 lduh [%o1], %g2
540 add %o1, 2, %o1
541 sth %g2, [%o0]
542 sub %o2, 2, %o2
543 b 3f
544 add %o0, 2, %o0
545
546#ifdef __KERNEL__
547FUNC(__memcpy)
548#endif
549FUNC(memcpy) /* %o0=dst %o1=src %o2=len */
550
551 sub %o0, %o1, %o4
552 SETUP_RETL
5539:
554 andcc %o4, 3, %o5
5550:
556 bne 86f
557 cmp %o2, 15
558
559 bleu 90f
560 andcc %o1, 3, %g0
561
562 bne 78b
5633:
564 andcc %o1, 4, %g0
565
566 be 2f
567 mov %o2, %g1
568
569 ld [%o1], %o4
570 sub %g1, 4, %g1
571 st %o4, [%o0]
572 add %o1, 4, %o1
573 add %o0, 4, %o0
5742:
575 andcc %g1, 0xffffff80, %g7
576 be 3f
577 andcc %o0, 4, %g0
578
579 be 82f + 4
5805:
581 MOVE_BIGCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
582 MOVE_BIGCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
583 MOVE_BIGCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
584 MOVE_BIGCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
585 subcc %g7, 128, %g7
586 add %o1, 128, %o1
587 bne 5b
588 add %o0, 128, %o0
5893:
590 andcc %g1, 0x70, %g7
591 be 80f
592 andcc %g1, 8, %g0
593
594 sethi %hi(80f), %o5
595 srl %g7, 1, %o4
596 add %g7, %o4, %o4
597 add %o1, %g7, %o1
598 sub %o5, %o4, %o5
599 jmpl %o5 + %lo(80f), %g0
600 add %o0, %g7, %o0
601
60279: /* memcpy_table */
603
604 MOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
605 MOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
606 MOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
607 MOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
608 MOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
609 MOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
610 MOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
611
61280: /* memcpy_table_end */
613 be 81f
614 andcc %g1, 4, %g0
615
616 ldd [%o1], %g2
617 add %o0, 8, %o0
618 st %g2, [%o0 - 0x08]
619 add %o1, 8, %o1
620 st %g3, [%o0 - 0x04]
621
62281: /* memcpy_last7 */
623
624 be 1f
625 andcc %g1, 2, %g0
626
627 ld [%o1], %g2
628 add %o1, 4, %o1
629 st %g2, [%o0]
630 add %o0, 4, %o0
6311:
632 be 1f
633 andcc %g1, 1, %g0
634
635 lduh [%o1], %g2
636 add %o1, 2, %o1
637 sth %g2, [%o0]
638 add %o0, 2, %o0
6391:
640 be 1f
641 nop
642
643 ldub [%o1], %g2
644 stb %g2, [%o0]
6451:
646 retl
647 RETL_INSN
648
64982: /* ldd_std */
650 MOVE_BIGALIGNCHUNK(o1, o0, 0x00, o2, o3, o4, o5, g2, g3, g4, g5)
651 MOVE_BIGALIGNCHUNK(o1, o0, 0x20, o2, o3, o4, o5, g2, g3, g4, g5)
652 MOVE_BIGALIGNCHUNK(o1, o0, 0x40, o2, o3, o4, o5, g2, g3, g4, g5)
653 MOVE_BIGALIGNCHUNK(o1, o0, 0x60, o2, o3, o4, o5, g2, g3, g4, g5)
654 subcc %g7, 128, %g7
655 add %o1, 128, %o1
656 bne 82b
657 add %o0, 128, %o0
658
659#ifndef FASTER_ALIGNED
660
661 andcc %g1, 0x70, %g7
662 be 80b
663 andcc %g1, 8, %g0
664
665 sethi %hi(80b), %o5
666 srl %g7, 1, %o4
667 add %g7, %o4, %o4
668 add %o1, %g7, %o1
669 sub %o5, %o4, %o5
670 jmpl %o5 + %lo(80b), %g0
671 add %o0, %g7, %o0
672
673#else /* FASTER_ALIGNED */
674
675 andcc %g1, 0x70, %g7
676 be 84f
677 andcc %g1, 8, %g0
678
679 sethi %hi(84f), %o5
680 add %o1, %g7, %o1
681 sub %o5, %g7, %o5
682 jmpl %o5 + %lo(84f), %g0
683 add %o0, %g7, %o0
684
68583: /* amemcpy_table */
686
687 MOVE_LASTALIGNCHUNK(o1, o0, 0x60, g2, g3, g4, g5)
688 MOVE_LASTALIGNCHUNK(o1, o0, 0x50, g2, g3, g4, g5)
689 MOVE_LASTALIGNCHUNK(o1, o0, 0x40, g2, g3, g4, g5)
690 MOVE_LASTALIGNCHUNK(o1, o0, 0x30, g2, g3, g4, g5)
691 MOVE_LASTALIGNCHUNK(o1, o0, 0x20, g2, g3, g4, g5)
692 MOVE_LASTALIGNCHUNK(o1, o0, 0x10, g2, g3, g4, g5)
693 MOVE_LASTALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5)
694
69584: /* amemcpy_table_end */
696 be 85f
697 andcc %g1, 4, %g0
698
699 ldd [%o1], %g2
700 add %o0, 8, %o0
701 std %g2, [%o0 - 0x08]
702 add %o1, 8, %o1
70385: /* amemcpy_last7 */
704 be 1f
705 andcc %g1, 2, %g0
706
707 ld [%o1], %g2
708 add %o1, 4, %o1
709 st %g2, [%o0]
710 add %o0, 4, %o0
7111:
712 be 1f
713 andcc %g1, 1, %g0
714
715 lduh [%o1], %g2
716 add %o1, 2, %o1
717 sth %g2, [%o0]
718 add %o0, 2, %o0
7191:
720 be 1f
721 nop
722
723 ldub [%o1], %g2
724 stb %g2, [%o0]
7251:
726 retl
727 RETL_INSN
728
729#endif /* FASTER_ALIGNED */
730
73186: /* non_aligned */
732 cmp %o2, 6
733 bleu 88f
734
735#ifdef FASTER_NONALIGNED
736
737 cmp %o2, 256
738 bcc 87f
739
740#endif /* FASTER_NONALIGNED */
741
742 andcc %o0, 3, %g0
743 be 61f
744 andcc %o0, 1, %g0
745 be 60f
746 andcc %o0, 2, %g0
747
748 ldub [%o1], %g5
749 add %o1, 1, %o1
750 stb %g5, [%o0]
751 sub %o2, 1, %o2
752 bne 61f
753 add %o0, 1, %o0
75460:
755 ldub [%o1], %g3
756 add %o1, 2, %o1
757 stb %g3, [%o0]
758 sub %o2, 2, %o2
759 ldub [%o1 - 1], %g3
760 add %o0, 2, %o0
761 stb %g3, [%o0 - 1]
76261:
763 and %o1, 3, %g2
764 and %o2, 0xc, %g3
765 and %o1, -4, %o1
766 cmp %g3, 4
767 sll %g2, 3, %g4
768 mov 32, %g2
769 be 4f
770 sub %g2, %g4, %g7
771
772 blu 3f
773 cmp %g3, 0x8
774
775 be 2f
776 srl %o2, 2, %g3
777
778 ld [%o1], %o3
779 add %o0, -8, %o0
780 ld [%o1 + 4], %o4
781 b 8f
782 add %g3, 1, %g3
7832:
784 ld [%o1], %o4
785 add %o0, -12, %o0
786 ld [%o1 + 4], %o5
787 add %g3, 2, %g3
788 b 9f
789 add %o1, -4, %o1
7903:
791 ld [%o1], %g1
792 add %o0, -4, %o0
793 ld [%o1 + 4], %o3
794 srl %o2, 2, %g3
795 b 7f
796 add %o1, 4, %o1
7974:
798 ld [%o1], %o5
799 cmp %o2, 7
800 ld [%o1 + 4], %g1
801 srl %o2, 2, %g3
802 bleu 10f
803 add %o1, 8, %o1
804
805 ld [%o1], %o3
806 add %g3, -1, %g3
8075:
808 sll %o5, %g4, %g2
809 srl %g1, %g7, %g5
810 or %g2, %g5, %g2
811 st %g2, [%o0]
8127:
813 ld [%o1 + 4], %o4
814 sll %g1, %g4, %g2
815 srl %o3, %g7, %g5
816 or %g2, %g5, %g2
817 st %g2, [%o0 + 4]
8188:
819 ld [%o1 + 8], %o5
820 sll %o3, %g4, %g2
821 srl %o4, %g7, %g5
822 or %g2, %g5, %g2
823 st %g2, [%o0 + 8]
8249:
825 ld [%o1 + 12], %g1
826 sll %o4, %g4, %g2
827 srl %o5, %g7, %g5
828 addcc %g3, -4, %g3
829 or %g2, %g5, %g2
830 add %o1, 16, %o1
831 st %g2, [%o0 + 12]
832 add %o0, 16, %o0
833 bne,a 5b
834 ld [%o1], %o3
83510:
836 sll %o5, %g4, %g2
837 srl %g1, %g7, %g5
838 srl %g7, 3, %g3
839 or %g2, %g5, %g2
840 sub %o1, %g3, %o1
841 andcc %o2, 2, %g0
842 st %g2, [%o0]
843 be 1f
844 andcc %o2, 1, %g0
845
846 ldub [%o1], %g2
847 add %o1, 2, %o1
848 stb %g2, [%o0 + 4]
849 add %o0, 2, %o0
850 ldub [%o1 - 1], %g2
851 stb %g2, [%o0 + 3]
8521:
853 be 1f
854 nop
855 ldub [%o1], %g2
856 stb %g2, [%o0 + 4]
8571:
858 retl
859 RETL_INSN
860
861#ifdef FASTER_NONALIGNED
862
86387: /* faster_nonaligned */
864
865 andcc %o1, 3, %g0
866 be 3f
867 andcc %o1, 1, %g0
868
869 be 4f
870 andcc %o1, 2, %g0
871
872 ldub [%o1], %g2
873 add %o1, 1, %o1
874 stb %g2, [%o0]
875 sub %o2, 1, %o2
876 bne 3f
877 add %o0, 1, %o0
8784:
879 lduh [%o1], %g2
880 add %o1, 2, %o1
881 srl %g2, 8, %g3
882 sub %o2, 2, %o2
883 stb %g3, [%o0]
884 add %o0, 2, %o0
885 stb %g2, [%o0 - 1]
8863:
887 andcc %o1, 4, %g0
888
889 bne 2f
890 cmp %o5, 1
891
892 ld [%o1], %o4
893 srl %o4, 24, %g2
894 stb %g2, [%o0]
895 srl %o4, 16, %g3
896 stb %g3, [%o0 + 1]
897 srl %o4, 8, %g2
898 stb %g2, [%o0 + 2]
899 sub %o2, 4, %o2
900 stb %o4, [%o0 + 3]
901 add %o1, 4, %o1
902 add %o0, 4, %o0
9032:
904 be 33f
905 cmp %o5, 2
906 be 32f
907 sub %o2, 4, %o2
90831:
909 ld [%o1], %g2
910 add %o1, 4, %o1
911 srl %g2, 24, %g3
912 and %o0, 7, %g5
913 stb %g3, [%o0]
914 cmp %g5, 7
915 sll %g2, 8, %g1
916 add %o0, 4, %o0
917 be 41f
918 and %o2, 0xffffffc0, %o3
919 ld [%o0 - 7], %o4
9204:
921 SMOVE_CHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
922 SMOVE_CHUNK(o1, o0, 0x10, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
923 SMOVE_CHUNK(o1, o0, 0x20, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
924 SMOVE_CHUNK(o1, o0, 0x30, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
925 subcc %o3, 64, %o3
926 add %o1, 64, %o1
927 bne 4b
928 add %o0, 64, %o0
929
930 andcc %o2, 0x30, %o3
931 be,a 1f
932 srl %g1, 16, %g2
9334:
934 SMOVE_CHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
935 subcc %o3, 16, %o3
936 add %o1, 16, %o1
937 bne 4b
938 add %o0, 16, %o0
939
940 srl %g1, 16, %g2
9411:
942 st %o4, [%o0 - 7]
943 sth %g2, [%o0 - 3]
944 srl %g1, 8, %g4
945 b 88f
946 stb %g4, [%o0 - 1]
94732:
948 ld [%o1], %g2
949 add %o1, 4, %o1
950 srl %g2, 16, %g3
951 and %o0, 7, %g5
952 sth %g3, [%o0]
953 cmp %g5, 6
954 sll %g2, 16, %g1
955 add %o0, 4, %o0
956 be 42f
957 and %o2, 0xffffffc0, %o3
958 ld [%o0 - 6], %o4
9594:
960 SMOVE_CHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
961 SMOVE_CHUNK(o1, o0, 0x10, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
962 SMOVE_CHUNK(o1, o0, 0x20, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
963 SMOVE_CHUNK(o1, o0, 0x30, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
964 subcc %o3, 64, %o3
965 add %o1, 64, %o1
966 bne 4b
967 add %o0, 64, %o0
968
969 andcc %o2, 0x30, %o3
970 be,a 1f
971 srl %g1, 16, %g2
9724:
973 SMOVE_CHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
974 subcc %o3, 16, %o3
975 add %o1, 16, %o1
976 bne 4b
977 add %o0, 16, %o0
978
979 srl %g1, 16, %g2
9801:
981 st %o4, [%o0 - 6]
982 b 88f
983 sth %g2, [%o0 - 2]
98433:
985 ld [%o1], %g2
986 sub %o2, 4, %o2
987 srl %g2, 24, %g3
988 and %o0, 7, %g5
989 stb %g3, [%o0]
990 cmp %g5, 5
991 srl %g2, 8, %g4
992 sll %g2, 24, %g1
993 sth %g4, [%o0 + 1]
994 add %o1, 4, %o1
995 be 43f
996 and %o2, 0xffffffc0, %o3
997
998 ld [%o0 - 1], %o4
999 add %o0, 4, %o0
10004:
1001 SMOVE_CHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, -1)
1002 SMOVE_CHUNK(o1, o0, 0x10, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, -1)
1003 SMOVE_CHUNK(o1, o0, 0x20, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, -1)
1004 SMOVE_CHUNK(o1, o0, 0x30, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, -1)
1005 subcc %o3, 64, %o3
1006 add %o1, 64, %o1
1007 bne 4b
1008 add %o0, 64, %o0
1009
1010 andcc %o2, 0x30, %o3
1011 be,a 1f
1012 srl %g1, 24, %g2
10134:
1014 SMOVE_CHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, -1)
1015 subcc %o3, 16, %o3
1016 add %o1, 16, %o1
1017 bne 4b
1018 add %o0, 16, %o0
1019
1020 srl %g1, 24, %g2
10211:
1022 st %o4, [%o0 - 5]
1023 b 88f
1024 stb %g2, [%o0 - 1]
102541:
1026 SMOVE_ALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
1027 SMOVE_ALIGNCHUNK(o1, o0, 0x10, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
1028 SMOVE_ALIGNCHUNK(o1, o0, 0x20, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
1029 SMOVE_ALIGNCHUNK(o1, o0, 0x30, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
1030 subcc %o3, 64, %o3
1031 add %o1, 64, %o1
1032 bne 41b
1033 add %o0, 64, %o0
1034
1035 andcc %o2, 0x30, %o3
1036 be,a 1f
1037 srl %g1, 16, %g2
10384:
1039 SMOVE_ALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 8, 24, -3)
1040 subcc %o3, 16, %o3
1041 add %o1, 16, %o1
1042 bne 4b
1043 add %o0, 16, %o0
1044
1045 srl %g1, 16, %g2
10461:
1047 sth %g2, [%o0 - 3]
1048 srl %g1, 8, %g4
1049 b 88f
1050 stb %g4, [%o0 - 1]
105143:
1052 SMOVE_ALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, 3)
1053 SMOVE_ALIGNCHUNK(o1, o0, 0x10, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, 3)
1054 SMOVE_ALIGNCHUNK(o1, o0, 0x20, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, 3)
1055 SMOVE_ALIGNCHUNK(o1, o0, 0x30, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, 3)
1056 subcc %o3, 64, %o3
1057 add %o1, 64, %o1
1058 bne 43b
1059 add %o0, 64, %o0
1060
1061 andcc %o2, 0x30, %o3
1062 be,a 1f
1063 srl %g1, 24, %g2
10644:
1065 SMOVE_ALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 24, 8, 3)
1066 subcc %o3, 16, %o3
1067 add %o1, 16, %o1
1068 bne 4b
1069 add %o0, 16, %o0
1070
1071 srl %g1, 24, %g2
10721:
1073 stb %g2, [%o0 + 3]
1074 b 88f
1075 add %o0, 4, %o0
107642:
1077 SMOVE_ALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
1078 SMOVE_ALIGNCHUNK(o1, o0, 0x10, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
1079 SMOVE_ALIGNCHUNK(o1, o0, 0x20, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
1080 SMOVE_ALIGNCHUNK(o1, o0, 0x30, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
1081 subcc %o3, 64, %o3
1082 add %o1, 64, %o1
1083 bne 42b
1084 add %o0, 64, %o0
1085
1086 andcc %o2, 0x30, %o3
1087 be,a 1f
1088 srl %g1, 16, %g2
10894:
1090 SMOVE_ALIGNCHUNK(o1, o0, 0x00, g2, g3, g4, g5, o4, o5, g7, g1, 16, 16, -2)
1091 subcc %o3, 16, %o3
1092 add %o1, 16, %o1
1093 bne 4b
1094 add %o0, 16, %o0
1095
1096 srl %g1, 16, %g2
10971:
1098 sth %g2, [%o0 - 2]
1099
1100 /* Fall through */
1101
1102#endif /* FASTER_NONALIGNED */
1103
110488: /* short_end */
1105
1106 and %o2, 0xe, %o3
110720:
1108 sethi %hi(89f), %o5
1109 sll %o3, 3, %o4
1110 add %o0, %o3, %o0
1111 sub %o5, %o4, %o5
1112 add %o1, %o3, %o1
1113 jmpl %o5 + %lo(89f), %g0
1114 andcc %o2, 1, %g0
1115
1116 MOVE_SHORTCHUNK(o1, o0, 0x0c, g2, g3)
1117 MOVE_SHORTCHUNK(o1, o0, 0x0a, g2, g3)
1118 MOVE_SHORTCHUNK(o1, o0, 0x08, g2, g3)
1119 MOVE_SHORTCHUNK(o1, o0, 0x06, g2, g3)
1120 MOVE_SHORTCHUNK(o1, o0, 0x04, g2, g3)
1121 MOVE_SHORTCHUNK(o1, o0, 0x02, g2, g3)
1122 MOVE_SHORTCHUNK(o1, o0, 0x00, g2, g3)
1123
112489: /* short_table_end */
1125
1126 be 1f
1127 nop
1128
1129 ldub [%o1], %g2
1130 stb %g2, [%o0]
11311:
1132 retl
1133 RETL_INSN
1134
113590: /* short_aligned_end */
1136 bne 88b
1137 andcc %o2, 8, %g0
1138
1139 be 1f
1140 andcc %o2, 4, %g0
1141
1142 ld [%o1 + 0x00], %g2
1143 ld [%o1 + 0x04], %g3
1144 add %o1, 8, %o1
1145 st %g2, [%o0 + 0x00]
1146 st %g3, [%o0 + 0x04]
1147 add %o0, 8, %o0
11481:
1149 b 81b
1150 mov %o2, %g1
diff --git a/arch/sparc/lib/memscan.S b/arch/sparc/lib/memscan.S
new file mode 100644
index 000000000000..28e78ff090ac
--- /dev/null
+++ b/arch/sparc/lib/memscan.S
@@ -0,0 +1,133 @@
1/* $Id: memscan.S,v 1.4 1996/09/08 02:01:20 davem Exp $
2 * memscan.S: Optimized memscan for the Sparc.
3 *
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 */
6
7/* In essence, this is just a fancy strlen. */
8
9#define LO_MAGIC 0x01010101
10#define HI_MAGIC 0x80808080
11
12 .text
13 .align 4
14 .globl __memscan_zero, __memscan_generic
15 .globl memscan
16__memscan_zero:
17 /* %o0 = addr, %o1 = size */
18 cmp %o1, 0
19 bne,a 1f
20 andcc %o0, 3, %g0
21
22 retl
23 nop
24
251:
26 be mzero_scan_word
27 sethi %hi(HI_MAGIC), %g2
28
29 ldsb [%o0], %g3
30mzero_still_not_word_aligned:
31 cmp %g3, 0
32 bne 1f
33 add %o0, 1, %o0
34
35 retl
36 sub %o0, 1, %o0
37
381:
39 subcc %o1, 1, %o1
40 bne,a 1f
41 andcc %o0, 3, %g0
42
43 retl
44 nop
45
461:
47 bne,a mzero_still_not_word_aligned
48 ldsb [%o0], %g3
49
50 sethi %hi(HI_MAGIC), %g2
51mzero_scan_word:
52 or %g2, %lo(HI_MAGIC), %o3
53 sethi %hi(LO_MAGIC), %g3
54 or %g3, %lo(LO_MAGIC), %o2
55mzero_next_word:
56 ld [%o0], %g2
57mzero_next_word_preloaded:
58 sub %g2, %o2, %g2
59mzero_next_word_preloaded_next:
60 andcc %g2, %o3, %g0
61 bne mzero_byte_zero
62 add %o0, 4, %o0
63
64mzero_check_out_of_fuel:
65 subcc %o1, 4, %o1
66 bg,a 1f
67 ld [%o0], %g2
68
69 retl
70 nop
71
721:
73 b mzero_next_word_preloaded_next
74 sub %g2, %o2, %g2
75
76 /* Check every byte. */
77mzero_byte_zero:
78 ldsb [%o0 - 4], %g2
79 cmp %g2, 0
80 bne mzero_byte_one
81 sub %o0, 4, %g3
82
83 retl
84 mov %g3, %o0
85
86mzero_byte_one:
87 ldsb [%o0 - 3], %g2
88 cmp %g2, 0
89 bne,a mzero_byte_two_and_three
90 ldsb [%o0 - 2], %g2
91
92 retl
93 sub %o0, 3, %o0
94
95mzero_byte_two_and_three:
96 cmp %g2, 0
97 bne,a 1f
98 ldsb [%o0 - 1], %g2
99
100 retl
101 sub %o0, 2, %o0
102
1031:
104 cmp %g2, 0
105 bne,a mzero_next_word_preloaded
106 ld [%o0], %g2
107
108 retl
109 sub %o0, 1, %o0
110
111mzero_found_it:
112 retl
113 sub %o0, 2, %o0
114
115memscan:
116__memscan_generic:
117 /* %o0 = addr, %o1 = c, %o2 = size */
118 cmp %o2, 0
119 bne,a 0f
120 ldub [%o0], %g2
121
122 b,a 2f
1231:
124 ldub [%o0], %g2
1250:
126 cmp %g2, %o1
127 be 2f
128 addcc %o2, -1, %o2
129 bne 1b
130 add %o0, 1, %o0
1312:
132 retl
133 nop
diff --git a/arch/sparc/lib/memset.S b/arch/sparc/lib/memset.S
new file mode 100644
index 000000000000..a65eba41097c
--- /dev/null
+++ b/arch/sparc/lib/memset.S
@@ -0,0 +1,203 @@
1/* linux/arch/sparc/lib/memset.S: Sparc optimized memset, bzero and clear_user code
2 * Copyright (C) 1991,1996 Free Software Foundation
3 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 *
6 * Returns 0, if ok, and number of bytes not yet set if exception
7 * occurs and we were called as clear_user.
8 */
9
10#include <asm/ptrace.h>
11
12/* Work around cpp -rob */
13#define ALLOC #alloc
14#define EXECINSTR #execinstr
15#define EX(x,y,a,b) \
1698: x,y; \
17 .section .fixup,ALLOC,EXECINSTR; \
18 .align 4; \
1999: ba 30f; \
20 a, b, %o0; \
21 .section __ex_table,ALLOC; \
22 .align 4; \
23 .word 98b, 99b; \
24 .text; \
25 .align 4
26
27#define EXT(start,end,handler) \
28 .section __ex_table,ALLOC; \
29 .align 4; \
30 .word start, 0, end, handler; \
31 .text; \
32 .align 4
33
34/* Please don't change these macros, unless you change the logic
35 * in the .fixup section below as well.
36 * Store 64 bytes at (BASE + OFFSET) using value SOURCE. */
37#define ZERO_BIG_BLOCK(base, offset, source) \
38 std source, [base + offset + 0x00]; \
39 std source, [base + offset + 0x08]; \
40 std source, [base + offset + 0x10]; \
41 std source, [base + offset + 0x18]; \
42 std source, [base + offset + 0x20]; \
43 std source, [base + offset + 0x28]; \
44 std source, [base + offset + 0x30]; \
45 std source, [base + offset + 0x38];
46
47#define ZERO_LAST_BLOCKS(base, offset, source) \
48 std source, [base - offset - 0x38]; \
49 std source, [base - offset - 0x30]; \
50 std source, [base - offset - 0x28]; \
51 std source, [base - offset - 0x20]; \
52 std source, [base - offset - 0x18]; \
53 std source, [base - offset - 0x10]; \
54 std source, [base - offset - 0x08]; \
55 std source, [base - offset - 0x00];
56
57 .text
58 .align 4
59
60 .globl __bzero_begin
61__bzero_begin:
62
63 .globl __bzero, __memset,
64 .globl memset
65 .globl __memset_start, __memset_end
66__memset_start:
67__memset:
68memset:
69 and %o1, 0xff, %g3
70 sll %g3, 8, %g2
71 or %g3, %g2, %g3
72 sll %g3, 16, %g2
73 or %g3, %g2, %g3
74 b 1f
75 mov %o2, %o1
763:
77 cmp %o2, 3
78 be 2f
79 EX(stb %g3, [%o0], sub %o1, 0)
80
81 cmp %o2, 2
82 be 2f
83 EX(stb %g3, [%o0 + 0x01], sub %o1, 1)
84
85 EX(stb %g3, [%o0 + 0x02], sub %o1, 2)
862:
87 sub %o2, 4, %o2
88 add %o1, %o2, %o1
89 b 4f
90 sub %o0, %o2, %o0
91
92__bzero:
93 mov %g0, %g3
941:
95 cmp %o1, 7
96 bleu 7f
97 andcc %o0, 3, %o2
98
99 bne 3b
1004:
101 andcc %o0, 4, %g0
102
103 be 2f
104 mov %g3, %g2
105
106 EX(st %g3, [%o0], sub %o1, 0)
107 sub %o1, 4, %o1
108 add %o0, 4, %o0
1092:
110 andcc %o1, 0xffffff80, %o3 ! Now everything is 8 aligned and o1 is len to run
111 be 9f
112 andcc %o1, 0x78, %o2
11310:
114 ZERO_BIG_BLOCK(%o0, 0x00, %g2)
115 subcc %o3, 128, %o3
116 ZERO_BIG_BLOCK(%o0, 0x40, %g2)
11711:
118 EXT(10b, 11b, 20f)
119 bne 10b
120 add %o0, 128, %o0
121
122 orcc %o2, %g0, %g0
1239:
124 be 13f
125 andcc %o1, 7, %o1
126
127 srl %o2, 1, %o3
128 set 13f, %o4
129 sub %o4, %o3, %o4
130 jmp %o4
131 add %o0, %o2, %o0
132
13312:
134 ZERO_LAST_BLOCKS(%o0, 0x48, %g2)
135 ZERO_LAST_BLOCKS(%o0, 0x08, %g2)
13613:
137 be 8f
138 andcc %o1, 4, %g0
139
140 be 1f
141 andcc %o1, 2, %g0
142
143 EX(st %g3, [%o0], and %o1, 7)
144 add %o0, 4, %o0
1451:
146 be 1f
147 andcc %o1, 1, %g0
148
149 EX(sth %g3, [%o0], and %o1, 3)
150 add %o0, 2, %o0
1511:
152 bne,a 8f
153 EX(stb %g3, [%o0], and %o1, 1)
1548:
155 retl
156 clr %o0
1577:
158 be 13b
159 orcc %o1, 0, %g0
160
161 be 0f
1628:
163 add %o0, 1, %o0
164 subcc %o1, 1, %o1
165 bne,a 8b
166 EX(stb %g3, [%o0 - 1], add %o1, 1)
1670:
168 retl
169 clr %o0
170__memset_end:
171
172 .section .fixup,#alloc,#execinstr
173 .align 4
17420:
175 cmp %g2, 8
176 bleu 1f
177 and %o1, 0x7f, %o1
178 sub %g2, 9, %g2
179 add %o3, 64, %o3
1801:
181 sll %g2, 3, %g2
182 add %o3, %o1, %o0
183 b 30f
184 sub %o0, %g2, %o0
18521:
186 mov 8, %o0
187 and %o1, 7, %o1
188 sub %o0, %g2, %o0
189 sll %o0, 3, %o0
190 b 30f
191 add %o0, %o1, %o0
19230:
193/* %o4 is faulting address, %o5 is %pc where fault occurred */
194 save %sp, -104, %sp
195 mov %i5, %o0
196 mov %i7, %o1
197 call lookup_fault
198 mov %i4, %o2
199 ret
200 restore
201
202 .globl __bzero_end
203__bzero_end:
diff --git a/arch/sparc/lib/mul.S b/arch/sparc/lib/mul.S
new file mode 100644
index 000000000000..83dffbc2f62f
--- /dev/null
+++ b/arch/sparc/lib/mul.S
@@ -0,0 +1,135 @@
1/* $Id: mul.S,v 1.4 1996/09/30 02:22:32 davem Exp $
2 * mul.S: This routine was taken from glibc-1.09 and is covered
3 * by the GNU Library General Public License Version 2.
4 */
5
6/*
7 * Signed multiply, from Appendix E of the Sparc Version 8
8 * Architecture Manual.
9 */
10
11/*
12 * Returns %o0 * %o1 in %o1%o0 (i.e., %o1 holds the upper 32 bits of
13 * the 64-bit product).
14 *
15 * This code optimizes short (less than 13-bit) multiplies.
16 */
17
18 .globl .mul
19.mul:
20 mov %o0, %y ! multiplier -> Y
21 andncc %o0, 0xfff, %g0 ! test bits 12..31
22 be Lmul_shortway ! if zero, can do it the short way
23 andcc %g0, %g0, %o4 ! zero the partial product and clear N and V
24
25 /*
26 * Long multiply. 32 steps, followed by a final shift step.
27 */
28 mulscc %o4, %o1, %o4 ! 1
29 mulscc %o4, %o1, %o4 ! 2
30 mulscc %o4, %o1, %o4 ! 3
31 mulscc %o4, %o1, %o4 ! 4
32 mulscc %o4, %o1, %o4 ! 5
33 mulscc %o4, %o1, %o4 ! 6
34 mulscc %o4, %o1, %o4 ! 7
35 mulscc %o4, %o1, %o4 ! 8
36 mulscc %o4, %o1, %o4 ! 9
37 mulscc %o4, %o1, %o4 ! 10
38 mulscc %o4, %o1, %o4 ! 11
39 mulscc %o4, %o1, %o4 ! 12
40 mulscc %o4, %o1, %o4 ! 13
41 mulscc %o4, %o1, %o4 ! 14
42 mulscc %o4, %o1, %o4 ! 15
43 mulscc %o4, %o1, %o4 ! 16
44 mulscc %o4, %o1, %o4 ! 17
45 mulscc %o4, %o1, %o4 ! 18
46 mulscc %o4, %o1, %o4 ! 19
47 mulscc %o4, %o1, %o4 ! 20
48 mulscc %o4, %o1, %o4 ! 21
49 mulscc %o4, %o1, %o4 ! 22
50 mulscc %o4, %o1, %o4 ! 23
51 mulscc %o4, %o1, %o4 ! 24
52 mulscc %o4, %o1, %o4 ! 25
53 mulscc %o4, %o1, %o4 ! 26
54 mulscc %o4, %o1, %o4 ! 27
55 mulscc %o4, %o1, %o4 ! 28
56 mulscc %o4, %o1, %o4 ! 29
57 mulscc %o4, %o1, %o4 ! 30
58 mulscc %o4, %o1, %o4 ! 31
59 mulscc %o4, %o1, %o4 ! 32
60 mulscc %o4, %g0, %o4 ! final shift
61
62 ! If %o0 was negative, the result is
63 ! (%o0 * %o1) + (%o1 << 32))
64 ! We fix that here.
65
66#if 0
67 tst %o0
68 bge 1f
69 rd %y, %o0
70
71 ! %o0 was indeed negative; fix upper 32 bits of result by subtracting
72 ! %o1 (i.e., return %o4 - %o1 in %o1).
73 retl
74 sub %o4, %o1, %o1
75
761:
77 retl
78 mov %o4, %o1
79#else
80 /* Faster code adapted from tege@sics.se's code for umul.S. */
81 sra %o0, 31, %o2 ! make mask from sign bit
82 and %o1, %o2, %o2 ! %o2 = 0 or %o1, depending on sign of %o0
83 rd %y, %o0 ! get lower half of product
84 retl
85 sub %o4, %o2, %o1 ! subtract compensation
86 ! and put upper half in place
87#endif
88
89Lmul_shortway:
90 /*
91 * Short multiply. 12 steps, followed by a final shift step.
92 * The resulting bits are off by 12 and (32-12) = 20 bit positions,
93 * but there is no problem with %o0 being negative (unlike above).
94 */
95 mulscc %o4, %o1, %o4 ! 1
96 mulscc %o4, %o1, %o4 ! 2
97 mulscc %o4, %o1, %o4 ! 3
98 mulscc %o4, %o1, %o4 ! 4
99 mulscc %o4, %o1, %o4 ! 5
100 mulscc %o4, %o1, %o4 ! 6
101 mulscc %o4, %o1, %o4 ! 7
102 mulscc %o4, %o1, %o4 ! 8
103 mulscc %o4, %o1, %o4 ! 9
104 mulscc %o4, %o1, %o4 ! 10
105 mulscc %o4, %o1, %o4 ! 11
106 mulscc %o4, %o1, %o4 ! 12
107 mulscc %o4, %g0, %o4 ! final shift
108
109 /*
110 * %o4 has 20 of the bits that should be in the low part of the
111 * result; %y has the bottom 12 (as %y's top 12). That is:
112 *
113 * %o4 %y
114 * +----------------+----------------+
115 * | -12- | -20- | -12- | -20- |
116 * +------(---------+------)---------+
117 * --hi-- ----low-part----
118 *
119 * The upper 12 bits of %o4 should be sign-extended to form the
120 * high part of the product (i.e., highpart = %o4 >> 20).
121 */
122
123 rd %y, %o5
124 sll %o4, 12, %o0 ! shift middle bits left 12
125 srl %o5, 20, %o5 ! shift low bits right 20, zero fill at left
126 or %o5, %o0, %o0 ! construct low part of result
127 retl
128 sra %o4, 20, %o1 ! ... and extract high part of result
129
130 .globl .mul_patch
131.mul_patch:
132 smul %o0, %o1, %o0
133 retl
134 rd %y, %o1
135 nop
diff --git a/arch/sparc/lib/muldi3.S b/arch/sparc/lib/muldi3.S
new file mode 100644
index 000000000000..7f17872d0603
--- /dev/null
+++ b/arch/sparc/lib/muldi3.S
@@ -0,0 +1,76 @@
1/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
2
3This file is part of GNU CC.
4
5GNU CC is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
7the Free Software Foundation; either version 2, or (at your option)
8any later version.
9
10GNU CC is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with GNU CC; see the file COPYING. If not, write to
17the Free Software Foundation, 59 Temple Place - Suite 330,
18Boston, MA 02111-1307, USA. */
19
20 .text
21 .align 4
22 .globl __muldi3
23__muldi3:
24 save %sp, -104, %sp
25 wr %g0, %i1, %y
26 sra %i3, 0x1f, %g2
27 and %i1, %g2, %g2
28 andcc %g0, 0, %g1
29 mulscc %g1, %i3, %g1
30 mulscc %g1, %i3, %g1
31 mulscc %g1, %i3, %g1
32 mulscc %g1, %i3, %g1
33 mulscc %g1, %i3, %g1
34 mulscc %g1, %i3, %g1
35 mulscc %g1, %i3, %g1
36 mulscc %g1, %i3, %g1
37 mulscc %g1, %i3, %g1
38 mulscc %g1, %i3, %g1
39 mulscc %g1, %i3, %g1
40 mulscc %g1, %i3, %g1
41 mulscc %g1, %i3, %g1
42 mulscc %g1, %i3, %g1
43 mulscc %g1, %i3, %g1
44 mulscc %g1, %i3, %g1
45 mulscc %g1, %i3, %g1
46 mulscc %g1, %i3, %g1
47 mulscc %g1, %i3, %g1
48 mulscc %g1, %i3, %g1
49 mulscc %g1, %i3, %g1
50 mulscc %g1, %i3, %g1
51 mulscc %g1, %i3, %g1
52 mulscc %g1, %i3, %g1
53 mulscc %g1, %i3, %g1
54 mulscc %g1, %i3, %g1
55 mulscc %g1, %i3, %g1
56 mulscc %g1, %i3, %g1
57 mulscc %g1, %i3, %g1
58 mulscc %g1, %i3, %g1
59 mulscc %g1, %i3, %g1
60 mulscc %g1, %i3, %g1
61 mulscc %g1, 0, %g1
62 add %g1, %g2, %l2
63 rd %y, %o1
64 mov %o1, %l3
65 mov %i1, %o0
66 call .umul
67 mov %i2, %o1
68 mov %o0, %l0
69 mov %i0, %o0
70 call .umul
71 mov %i3, %o1
72 add %l0, %o0, %l0
73 mov %l2, %i0
74 add %l2, %l0, %i0
75 ret
76 restore %g0, %l3, %o1
diff --git a/arch/sparc/lib/rem.S b/arch/sparc/lib/rem.S
new file mode 100644
index 000000000000..44508148d055
--- /dev/null
+++ b/arch/sparc/lib/rem.S
@@ -0,0 +1,382 @@
1/* $Id: rem.S,v 1.7 1996/09/30 02:22:34 davem Exp $
2 * rem.S: This routine was taken from glibc-1.09 and is covered
3 * by the GNU Library General Public License Version 2.
4 */
5
6
7/* This file is generated from divrem.m4; DO NOT EDIT! */
8/*
9 * Division and remainder, from Appendix E of the Sparc Version 8
10 * Architecture Manual, with fixes from Gordon Irlam.
11 */
12
13/*
14 * Input: dividend and divisor in %o0 and %o1 respectively.
15 *
16 * m4 parameters:
17 * .rem name of function to generate
18 * rem rem=div => %o0 / %o1; rem=rem => %o0 % %o1
19 * true true=true => signed; true=false => unsigned
20 *
21 * Algorithm parameters:
22 * N how many bits per iteration we try to get (4)
23 * WORDSIZE total number of bits (32)
24 *
25 * Derived constants:
26 * TOPBITS number of bits in the top decade of a number
27 *
28 * Important variables:
29 * Q the partial quotient under development (initially 0)
30 * R the remainder so far, initially the dividend
31 * ITER number of main division loop iterations required;
32 * equal to ceil(log2(quotient) / N). Note that this
33 * is the log base (2^N) of the quotient.
34 * V the current comparand, initially divisor*2^(ITER*N-1)
35 *
36 * Cost:
37 * Current estimate for non-large dividend is
38 * ceil(log2(quotient) / N) * (10 + 7N/2) + C
39 * A large dividend is one greater than 2^(31-TOPBITS) and takes a
40 * different path, as the upper bits of the quotient must be developed
41 * one bit at a time.
42 */
43
44
45 .globl .rem
46.rem:
47 ! compute sign of result; if neither is negative, no problem
48 orcc %o1, %o0, %g0 ! either negative?
49 bge 2f ! no, go do the divide
50 mov %o0, %g2 ! compute sign in any case
51
52 tst %o1
53 bge 1f
54 tst %o0
55 ! %o1 is definitely negative; %o0 might also be negative
56 bge 2f ! if %o0 not negative...
57 sub %g0, %o1, %o1 ! in any case, make %o1 nonneg
581: ! %o0 is negative, %o1 is nonnegative
59 sub %g0, %o0, %o0 ! make %o0 nonnegative
602:
61
62 ! Ready to divide. Compute size of quotient; scale comparand.
63 orcc %o1, %g0, %o5
64 bne 1f
65 mov %o0, %o3
66
67 ! Divide by zero trap. If it returns, return 0 (about as
68 ! wrong as possible, but that is what SunOS does...).
69 ta ST_DIV0
70 retl
71 clr %o0
72
731:
74 cmp %o3, %o5 ! if %o1 exceeds %o0, done
75 blu Lgot_result ! (and algorithm fails otherwise)
76 clr %o2
77
78 sethi %hi(1 << (32 - 4 - 1)), %g1
79
80 cmp %o3, %g1
81 blu Lnot_really_big
82 clr %o4
83
84 ! Here the dividend is >= 2**(31-N) or so. We must be careful here,
85 ! as our usual N-at-a-shot divide step will cause overflow and havoc.
86 ! The number of bits in the result here is N*ITER+SC, where SC <= N.
87 ! Compute ITER in an unorthodox manner: know we need to shift V into
88 ! the top decade: so do not even bother to compare to R.
89 1:
90 cmp %o5, %g1
91 bgeu 3f
92 mov 1, %g7
93
94 sll %o5, 4, %o5
95
96 b 1b
97 add %o4, 1, %o4
98
99 ! Now compute %g7.
100 2:
101 addcc %o5, %o5, %o5
102
103 bcc Lnot_too_big
104 add %g7, 1, %g7
105
106 ! We get here if the %o1 overflowed while shifting.
107 ! This means that %o3 has the high-order bit set.
108 ! Restore %o5 and subtract from %o3.
109 sll %g1, 4, %g1 ! high order bit
110 srl %o5, 1, %o5 ! rest of %o5
111 add %o5, %g1, %o5
112
113 b Ldo_single_div
114 sub %g7, 1, %g7
115
116 Lnot_too_big:
117 3:
118 cmp %o5, %o3
119 blu 2b
120 nop
121
122 be Ldo_single_div
123 nop
124 /* NB: these are commented out in the V8-Sparc manual as well */
125 /* (I do not understand this) */
126 ! %o5 > %o3: went too far: back up 1 step
127 ! srl %o5, 1, %o5
128 ! dec %g7
129 ! do single-bit divide steps
130 !
131 ! We have to be careful here. We know that %o3 >= %o5, so we can do the
132 ! first divide step without thinking. BUT, the others are conditional,
133 ! and are only done if %o3 >= 0. Because both %o3 and %o5 may have the high-
134 ! order bit set in the first step, just falling into the regular
135 ! division loop will mess up the first time around.
136 ! So we unroll slightly...
137 Ldo_single_div:
138 subcc %g7, 1, %g7
139 bl Lend_regular_divide
140 nop
141
142 sub %o3, %o5, %o3
143 mov 1, %o2
144
145 b Lend_single_divloop
146 nop
147 Lsingle_divloop:
148 sll %o2, 1, %o2
149
150 bl 1f
151 srl %o5, 1, %o5
152 ! %o3 >= 0
153 sub %o3, %o5, %o3
154
155 b 2f
156 add %o2, 1, %o2
157 1: ! %o3 < 0
158 add %o3, %o5, %o3
159 sub %o2, 1, %o2
160 2:
161 Lend_single_divloop:
162 subcc %g7, 1, %g7
163 bge Lsingle_divloop
164 tst %o3
165
166 b,a Lend_regular_divide
167
168Lnot_really_big:
1691:
170 sll %o5, 4, %o5
171 cmp %o5, %o3
172 bleu 1b
173 addcc %o4, 1, %o4
174 be Lgot_result
175 sub %o4, 1, %o4
176
177 tst %o3 ! set up for initial iteration
178Ldivloop:
179 sll %o2, 4, %o2
180 ! depth 1, accumulated bits 0
181 bl L.1.16
182 srl %o5,1,%o5
183 ! remainder is positive
184 subcc %o3,%o5,%o3
185 ! depth 2, accumulated bits 1
186 bl L.2.17
187 srl %o5,1,%o5
188 ! remainder is positive
189 subcc %o3,%o5,%o3
190 ! depth 3, accumulated bits 3
191 bl L.3.19
192 srl %o5,1,%o5
193 ! remainder is positive
194 subcc %o3,%o5,%o3
195 ! depth 4, accumulated bits 7
196 bl L.4.23
197 srl %o5,1,%o5
198 ! remainder is positive
199 subcc %o3,%o5,%o3
200
201 b 9f
202 add %o2, (7*2+1), %o2
203
204L.4.23:
205 ! remainder is negative
206 addcc %o3,%o5,%o3
207 b 9f
208 add %o2, (7*2-1), %o2
209
210L.3.19:
211 ! remainder is negative
212 addcc %o3,%o5,%o3
213 ! depth 4, accumulated bits 5
214 bl L.4.21
215 srl %o5,1,%o5
216 ! remainder is positive
217 subcc %o3,%o5,%o3
218 b 9f
219 add %o2, (5*2+1), %o2
220
221L.4.21:
222 ! remainder is negative
223 addcc %o3,%o5,%o3
224 b 9f
225 add %o2, (5*2-1), %o2
226
227L.2.17:
228 ! remainder is negative
229 addcc %o3,%o5,%o3
230 ! depth 3, accumulated bits 1
231 bl L.3.17
232 srl %o5,1,%o5
233 ! remainder is positive
234 subcc %o3,%o5,%o3
235 ! depth 4, accumulated bits 3
236 bl L.4.19
237 srl %o5,1,%o5
238 ! remainder is positive
239 subcc %o3,%o5,%o3
240 b 9f
241 add %o2, (3*2+1), %o2
242
243L.4.19:
244 ! remainder is negative
245 addcc %o3,%o5,%o3
246 b 9f
247 add %o2, (3*2-1), %o2
248
249L.3.17:
250 ! remainder is negative
251 addcc %o3,%o5,%o3
252 ! depth 4, accumulated bits 1
253 bl L.4.17
254 srl %o5,1,%o5
255 ! remainder is positive
256 subcc %o3,%o5,%o3
257 b 9f
258 add %o2, (1*2+1), %o2
259
260L.4.17:
261 ! remainder is negative
262 addcc %o3,%o5,%o3
263 b 9f
264 add %o2, (1*2-1), %o2
265
266L.1.16:
267 ! remainder is negative
268 addcc %o3,%o5,%o3
269 ! depth 2, accumulated bits -1
270 bl L.2.15
271 srl %o5,1,%o5
272 ! remainder is positive
273 subcc %o3,%o5,%o3
274 ! depth 3, accumulated bits -1
275 bl L.3.15
276 srl %o5,1,%o5
277 ! remainder is positive
278 subcc %o3,%o5,%o3
279 ! depth 4, accumulated bits -1
280 bl L.4.15
281 srl %o5,1,%o5
282 ! remainder is positive
283 subcc %o3,%o5,%o3
284 b 9f
285 add %o2, (-1*2+1), %o2
286
287L.4.15:
288 ! remainder is negative
289 addcc %o3,%o5,%o3
290 b 9f
291 add %o2, (-1*2-1), %o2
292
293L.3.15:
294 ! remainder is negative
295 addcc %o3,%o5,%o3
296 ! depth 4, accumulated bits -3
297 bl L.4.13
298 srl %o5,1,%o5
299 ! remainder is positive
300 subcc %o3,%o5,%o3
301 b 9f
302 add %o2, (-3*2+1), %o2
303
304L.4.13:
305 ! remainder is negative
306 addcc %o3,%o5,%o3
307 b 9f
308 add %o2, (-3*2-1), %o2
309
310L.2.15:
311 ! remainder is negative
312 addcc %o3,%o5,%o3
313 ! depth 3, accumulated bits -3
314 bl L.3.13
315 srl %o5,1,%o5
316 ! remainder is positive
317 subcc %o3,%o5,%o3
318 ! depth 4, accumulated bits -5
319 bl L.4.11
320 srl %o5,1,%o5
321 ! remainder is positive
322 subcc %o3,%o5,%o3
323 b 9f
324 add %o2, (-5*2+1), %o2
325
326L.4.11:
327 ! remainder is negative
328 addcc %o3,%o5,%o3
329 b 9f
330 add %o2, (-5*2-1), %o2
331
332
333L.3.13:
334 ! remainder is negative
335 addcc %o3,%o5,%o3
336 ! depth 4, accumulated bits -7
337 bl L.4.9
338 srl %o5,1,%o5
339 ! remainder is positive
340 subcc %o3,%o5,%o3
341 b 9f
342 add %o2, (-7*2+1), %o2
343
344L.4.9:
345 ! remainder is negative
346 addcc %o3,%o5,%o3
347 b 9f
348 add %o2, (-7*2-1), %o2
349
350 9:
351Lend_regular_divide:
352 subcc %o4, 1, %o4
353 bge Ldivloop
354 tst %o3
355
356 bl,a Lgot_result
357 ! non-restoring fixup here (one instruction only!)
358 add %o3, %o1, %o3
359
360Lgot_result:
361 ! check to see if answer should be < 0
362 tst %g2
363 bl,a 1f
364 sub %g0, %o3, %o3
3651:
366 retl
367 mov %o3, %o0
368
369 .globl .rem_patch
370.rem_patch:
371 sra %o0, 0x1f, %o4
372 wr %o4, 0x0, %y
373 nop
374 nop
375 nop
376 sdivcc %o0, %o1, %o2
377 bvs,a 1f
378 xnor %o2, %g0, %o2
3791: smul %o2, %o1, %o2
380 retl
381 sub %o0, %o2, %o0
382 nop
diff --git a/arch/sparc/lib/rwsem.S b/arch/sparc/lib/rwsem.S
new file mode 100644
index 000000000000..e7578dc600b8
--- /dev/null
+++ b/arch/sparc/lib/rwsem.S
@@ -0,0 +1,205 @@
1/* $Id: rwsem.S,v 1.5 2000/05/09 17:40:13 davem Exp $
2 * Assembly part of rw semaphores.
3 *
4 * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
5 */
6
7#include <linux/config.h>
8#include <asm/ptrace.h>
9#include <asm/psr.h>
10
11 .section .sched.text
12 .align 4
13
14 .globl ___down_read
15___down_read:
16 rd %psr, %g3
17 nop
18 nop
19 nop
20 or %g3, PSR_PIL, %g7
21 wr %g7, 0, %psr
22 nop
23 nop
24 nop
25#ifdef CONFIG_SMP
261: ldstub [%g1 + 4], %g7
27 tst %g7
28 bne 1b
29 ld [%g1], %g7
30 sub %g7, 1, %g7
31 st %g7, [%g1]
32 stb %g0, [%g1 + 4]
33#else
34 ld [%g1], %g7
35 sub %g7, 1, %g7
36 st %g7, [%g1]
37#endif
38 wr %g3, 0, %psr
39 add %g7, 1, %g7
40 nop
41 nop
42 subcc %g7, 1, %g7
43 bneg 3f
44 nop
452: jmpl %o7, %g0
46 mov %g4, %o7
473: save %sp, -64, %sp
48 mov %g1, %l1
49 mov %g4, %l4
50 bcs 4f
51 mov %g5, %l5
52 call down_read_failed
53 mov %l1, %o0
54 mov %l1, %g1
55 mov %l4, %g4
56 ba ___down_read
57 restore %l5, %g0, %g5
584: call down_read_failed_biased
59 mov %l1, %o0
60 mov %l1, %g1
61 mov %l4, %g4
62 ba 2b
63 restore %l5, %g0, %g5
64
65 .globl ___down_write
66___down_write:
67 rd %psr, %g3
68 nop
69 nop
70 nop
71 or %g3, PSR_PIL, %g7
72 wr %g7, 0, %psr
73 sethi %hi(0x01000000), %g2
74 nop
75 nop
76#ifdef CONFIG_SMP
771: ldstub [%g1 + 4], %g7
78 tst %g7
79 bne 1b
80 ld [%g1], %g7
81 sub %g7, %g2, %g7
82 st %g7, [%g1]
83 stb %g0, [%g1 + 4]
84#else
85 ld [%g1], %g7
86 sub %g7, %g2, %g7
87 st %g7, [%g1]
88#endif
89 wr %g3, 0, %psr
90 add %g7, %g2, %g7
91 nop
92 nop
93 subcc %g7, %g2, %g7
94 bne 3f
95 nop
962: jmpl %o7, %g0
97 mov %g4, %o7
983: save %sp, -64, %sp
99 mov %g1, %l1
100 mov %g4, %l4
101 bcs 4f
102 mov %g5, %l5
103 call down_write_failed
104 mov %l1, %o0
105 mov %l1, %g1
106 mov %l4, %g4
107 ba ___down_write
108 restore %l5, %g0, %g5
1094: call down_write_failed_biased
110 mov %l1, %o0
111 mov %l1, %g1
112 mov %l4, %g4
113 ba 2b
114 restore %l5, %g0, %g5
115
116 .text
117 .globl ___up_read
118___up_read:
119 rd %psr, %g3
120 nop
121 nop
122 nop
123 or %g3, PSR_PIL, %g7
124 wr %g7, 0, %psr
125 nop
126 nop
127 nop
128#ifdef CONFIG_SMP
1291: ldstub [%g1 + 4], %g7
130 tst %g7
131 bne 1b
132 ld [%g1], %g7
133 add %g7, 1, %g7
134 st %g7, [%g1]
135 stb %g0, [%g1 + 4]
136#else
137 ld [%g1], %g7
138 add %g7, 1, %g7
139 st %g7, [%g1]
140#endif
141 wr %g3, 0, %psr
142 nop
143 nop
144 nop
145 cmp %g7, 0
146 be 3f
147 nop
1482: jmpl %o7, %g0
149 mov %g4, %o7
1503: save %sp, -64, %sp
151 mov %g1, %l1
152 mov %g4, %l4
153 mov %g5, %l5
154 clr %o1
155 call __rwsem_wake
156 mov %l1, %o0
157 mov %l1, %g1
158 mov %l4, %g4
159 ba 2b
160 restore %l5, %g0, %g5
161
162 .globl ___up_write
163___up_write:
164 rd %psr, %g3
165 nop
166 nop
167 nop
168 or %g3, PSR_PIL, %g7
169 wr %g7, 0, %psr
170 sethi %hi(0x01000000), %g2
171 nop
172 nop
173#ifdef CONFIG_SMP
1741: ldstub [%g1 + 4], %g7
175 tst %g7
176 bne 1b
177 ld [%g1], %g7
178 add %g7, %g2, %g7
179 st %g7, [%g1]
180 stb %g0, [%g1 + 4]
181#else
182 ld [%g1], %g7
183 add %g7, %g2, %g7
184 st %g7, [%g1]
185#endif
186 wr %g3, 0, %psr
187 sub %g7, %g2, %g7
188 nop
189 nop
190 addcc %g7, %g2, %g7
191 bcs 3f
192 nop
1932: jmpl %o7, %g0
194 mov %g4, %o7
1953: save %sp, -64, %sp
196 mov %g1, %l1
197 mov %g4, %l4
198 mov %g5, %l5
199 mov %g7, %o1
200 call __rwsem_wake
201 mov %l1, %o0
202 mov %l1, %g1
203 mov %l4, %g4
204 ba 2b
205 restore %l5, %g0, %g5
diff --git a/arch/sparc/lib/sdiv.S b/arch/sparc/lib/sdiv.S
new file mode 100644
index 000000000000..e0ad80b6f63d
--- /dev/null
+++ b/arch/sparc/lib/sdiv.S
@@ -0,0 +1,379 @@
1/* $Id: sdiv.S,v 1.6 1996/10/02 17:37:00 davem Exp $
2 * sdiv.S: This routine was taken from glibc-1.09 and is covered
3 * by the GNU Library General Public License Version 2.
4 */
5
6
7/* This file is generated from divrem.m4; DO NOT EDIT! */
8/*
9 * Division and remainder, from Appendix E of the Sparc Version 8
10 * Architecture Manual, with fixes from Gordon Irlam.
11 */
12
13/*
14 * Input: dividend and divisor in %o0 and %o1 respectively.
15 *
16 * m4 parameters:
17 * .div name of function to generate
18 * div div=div => %o0 / %o1; div=rem => %o0 % %o1
19 * true true=true => signed; true=false => unsigned
20 *
21 * Algorithm parameters:
22 * N how many bits per iteration we try to get (4)
23 * WORDSIZE total number of bits (32)
24 *
25 * Derived constants:
26 * TOPBITS number of bits in the top decade of a number
27 *
28 * Important variables:
29 * Q the partial quotient under development (initially 0)
30 * R the remainder so far, initially the dividend
31 * ITER number of main division loop iterations required;
32 * equal to ceil(log2(quotient) / N). Note that this
33 * is the log base (2^N) of the quotient.
34 * V the current comparand, initially divisor*2^(ITER*N-1)
35 *
36 * Cost:
37 * Current estimate for non-large dividend is
38 * ceil(log2(quotient) / N) * (10 + 7N/2) + C
39 * A large dividend is one greater than 2^(31-TOPBITS) and takes a
40 * different path, as the upper bits of the quotient must be developed
41 * one bit at a time.
42 */
43
44
45 .globl .div
46.div:
47 ! compute sign of result; if neither is negative, no problem
48 orcc %o1, %o0, %g0 ! either negative?
49 bge 2f ! no, go do the divide
50 xor %o1, %o0, %g2 ! compute sign in any case
51
52 tst %o1
53 bge 1f
54 tst %o0
55 ! %o1 is definitely negative; %o0 might also be negative
56 bge 2f ! if %o0 not negative...
57 sub %g0, %o1, %o1 ! in any case, make %o1 nonneg
581: ! %o0 is negative, %o1 is nonnegative
59 sub %g0, %o0, %o0 ! make %o0 nonnegative
602:
61
62 ! Ready to divide. Compute size of quotient; scale comparand.
63 orcc %o1, %g0, %o5
64 bne 1f
65 mov %o0, %o3
66
67 ! Divide by zero trap. If it returns, return 0 (about as
68 ! wrong as possible, but that is what SunOS does...).
69 ta ST_DIV0
70 retl
71 clr %o0
72
731:
74 cmp %o3, %o5 ! if %o1 exceeds %o0, done
75 blu Lgot_result ! (and algorithm fails otherwise)
76 clr %o2
77
78 sethi %hi(1 << (32 - 4 - 1)), %g1
79
80 cmp %o3, %g1
81 blu Lnot_really_big
82 clr %o4
83
84 ! Here the dividend is >= 2**(31-N) or so. We must be careful here,
85 ! as our usual N-at-a-shot divide step will cause overflow and havoc.
86 ! The number of bits in the result here is N*ITER+SC, where SC <= N.
87 ! Compute ITER in an unorthodox manner: know we need to shift V into
88 ! the top decade: so do not even bother to compare to R.
89 1:
90 cmp %o5, %g1
91 bgeu 3f
92 mov 1, %g7
93
94 sll %o5, 4, %o5
95
96 b 1b
97 add %o4, 1, %o4
98
99 ! Now compute %g7.
100 2:
101 addcc %o5, %o5, %o5
102 bcc Lnot_too_big
103 add %g7, 1, %g7
104
105 ! We get here if the %o1 overflowed while shifting.
106 ! This means that %o3 has the high-order bit set.
107 ! Restore %o5 and subtract from %o3.
108 sll %g1, 4, %g1 ! high order bit
109 srl %o5, 1, %o5 ! rest of %o5
110 add %o5, %g1, %o5
111
112 b Ldo_single_div
113 sub %g7, 1, %g7
114
115 Lnot_too_big:
116 3:
117 cmp %o5, %o3
118 blu 2b
119 nop
120
121 be Ldo_single_div
122 nop
123 /* NB: these are commented out in the V8-Sparc manual as well */
124 /* (I do not understand this) */
125 ! %o5 > %o3: went too far: back up 1 step
126 ! srl %o5, 1, %o5
127 ! dec %g7
128 ! do single-bit divide steps
129 !
130 ! We have to be careful here. We know that %o3 >= %o5, so we can do the
131 ! first divide step without thinking. BUT, the others are conditional,
132 ! and are only done if %o3 >= 0. Because both %o3 and %o5 may have the high-
133 ! order bit set in the first step, just falling into the regular
134 ! division loop will mess up the first time around.
135 ! So we unroll slightly...
136 Ldo_single_div:
137 subcc %g7, 1, %g7
138 bl Lend_regular_divide
139 nop
140
141 sub %o3, %o5, %o3
142 mov 1, %o2
143
144 b Lend_single_divloop
145 nop
146 Lsingle_divloop:
147 sll %o2, 1, %o2
148
149 bl 1f
150 srl %o5, 1, %o5
151 ! %o3 >= 0
152 sub %o3, %o5, %o3
153
154 b 2f
155 add %o2, 1, %o2
156 1: ! %o3 < 0
157 add %o3, %o5, %o3
158 sub %o2, 1, %o2
159 2:
160 Lend_single_divloop:
161 subcc %g7, 1, %g7
162 bge Lsingle_divloop
163 tst %o3
164
165 b,a Lend_regular_divide
166
167Lnot_really_big:
1681:
169 sll %o5, 4, %o5
170 cmp %o5, %o3
171 bleu 1b
172 addcc %o4, 1, %o4
173
174 be Lgot_result
175 sub %o4, 1, %o4
176
177 tst %o3 ! set up for initial iteration
178Ldivloop:
179 sll %o2, 4, %o2
180 ! depth 1, accumulated bits 0
181 bl L.1.16
182 srl %o5,1,%o5
183 ! remainder is positive
184 subcc %o3,%o5,%o3
185 ! depth 2, accumulated bits 1
186 bl L.2.17
187 srl %o5,1,%o5
188 ! remainder is positive
189 subcc %o3,%o5,%o3
190 ! depth 3, accumulated bits 3
191 bl L.3.19
192 srl %o5,1,%o5
193 ! remainder is positive
194 subcc %o3,%o5,%o3
195 ! depth 4, accumulated bits 7
196 bl L.4.23
197 srl %o5,1,%o5
198 ! remainder is positive
199 subcc %o3,%o5,%o3
200 b 9f
201 add %o2, (7*2+1), %o2
202
203L.4.23:
204 ! remainder is negative
205 addcc %o3,%o5,%o3
206 b 9f
207 add %o2, (7*2-1), %o2
208
209L.3.19:
210 ! remainder is negative
211 addcc %o3,%o5,%o3
212 ! depth 4, accumulated bits 5
213 bl L.4.21
214 srl %o5,1,%o5
215 ! remainder is positive
216 subcc %o3,%o5,%o3
217 b 9f
218 add %o2, (5*2+1), %o2
219
220L.4.21:
221 ! remainder is negative
222 addcc %o3,%o5,%o3
223 b 9f
224 add %o2, (5*2-1), %o2
225
226L.2.17:
227 ! remainder is negative
228 addcc %o3,%o5,%o3
229 ! depth 3, accumulated bits 1
230 bl L.3.17
231 srl %o5,1,%o5
232 ! remainder is positive
233 subcc %o3,%o5,%o3
234 ! depth 4, accumulated bits 3
235 bl L.4.19
236 srl %o5,1,%o5
237 ! remainder is positive
238 subcc %o3,%o5,%o3
239 b 9f
240 add %o2, (3*2+1), %o2
241
242L.4.19:
243 ! remainder is negative
244 addcc %o3,%o5,%o3
245 b 9f
246 add %o2, (3*2-1), %o2
247
248
249L.3.17:
250 ! remainder is negative
251 addcc %o3,%o5,%o3
252 ! depth 4, accumulated bits 1
253 bl L.4.17
254 srl %o5,1,%o5
255 ! remainder is positive
256 subcc %o3,%o5,%o3
257 b 9f
258 add %o2, (1*2+1), %o2
259
260L.4.17:
261 ! remainder is negative
262 addcc %o3,%o5,%o3
263 b 9f
264 add %o2, (1*2-1), %o2
265
266L.1.16:
267 ! remainder is negative
268 addcc %o3,%o5,%o3
269 ! depth 2, accumulated bits -1
270 bl L.2.15
271 srl %o5,1,%o5
272 ! remainder is positive
273 subcc %o3,%o5,%o3
274 ! depth 3, accumulated bits -1
275 bl L.3.15
276 srl %o5,1,%o5
277 ! remainder is positive
278 subcc %o3,%o5,%o3
279 ! depth 4, accumulated bits -1
280 bl L.4.15
281 srl %o5,1,%o5
282 ! remainder is positive
283 subcc %o3,%o5,%o3
284 b 9f
285 add %o2, (-1*2+1), %o2
286
287L.4.15:
288 ! remainder is negative
289 addcc %o3,%o5,%o3
290 b 9f
291 add %o2, (-1*2-1), %o2
292
293L.3.15:
294 ! remainder is negative
295 addcc %o3,%o5,%o3
296 ! depth 4, accumulated bits -3
297 bl L.4.13
298 srl %o5,1,%o5
299 ! remainder is positive
300 subcc %o3,%o5,%o3
301 b 9f
302 add %o2, (-3*2+1), %o2
303
304L.4.13:
305 ! remainder is negative
306 addcc %o3,%o5,%o3
307 b 9f
308 add %o2, (-3*2-1), %o2
309
310L.2.15:
311 ! remainder is negative
312 addcc %o3,%o5,%o3
313 ! depth 3, accumulated bits -3
314 bl L.3.13
315 srl %o5,1,%o5
316 ! remainder is positive
317 subcc %o3,%o5,%o3
318 ! depth 4, accumulated bits -5
319 bl L.4.11
320 srl %o5,1,%o5
321 ! remainder is positive
322 subcc %o3,%o5,%o3
323 b 9f
324 add %o2, (-5*2+1), %o2
325
326L.4.11:
327 ! remainder is negative
328 addcc %o3,%o5,%o3
329 b 9f
330 add %o2, (-5*2-1), %o2
331
332L.3.13:
333 ! remainder is negative
334 addcc %o3,%o5,%o3
335 ! depth 4, accumulated bits -7
336 bl L.4.9
337 srl %o5,1,%o5
338 ! remainder is positive
339 subcc %o3,%o5,%o3
340 b 9f
341 add %o2, (-7*2+1), %o2
342
343L.4.9:
344 ! remainder is negative
345 addcc %o3,%o5,%o3
346 b 9f
347 add %o2, (-7*2-1), %o2
348
349 9:
350Lend_regular_divide:
351 subcc %o4, 1, %o4
352 bge Ldivloop
353 tst %o3
354
355 bl,a Lgot_result
356 ! non-restoring fixup here (one instruction only!)
357 sub %o2, 1, %o2
358
359Lgot_result:
360 ! check to see if answer should be < 0
361 tst %g2
362 bl,a 1f
363 sub %g0, %o2, %o2
3641:
365 retl
366 mov %o2, %o0
367
368 .globl .div_patch
369.div_patch:
370 sra %o0, 0x1f, %o2
371 wr %o2, 0x0, %y
372 nop
373 nop
374 nop
375 sdivcc %o0, %o1, %o0
376 bvs,a 1f
377 xnor %o0, %g0, %o0
3781: retl
379 nop
diff --git a/arch/sparc/lib/strlen.S b/arch/sparc/lib/strlen.S
new file mode 100644
index 000000000000..ed9a763368cd
--- /dev/null
+++ b/arch/sparc/lib/strlen.S
@@ -0,0 +1,81 @@
1/* strlen.S: Sparc optimized strlen code
2 * Hand optimized from GNU libc's strlen
3 * Copyright (C) 1991,1996 Free Software Foundation
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7
8#define LO_MAGIC 0x01010101
9#define HI_MAGIC 0x80808080
10
110:
12 ldub [%o0], %o5
13 cmp %o5, 0
14 be 1f
15 add %o0, 1, %o0
16 andcc %o0, 3, %g0
17 be 4f
18 or %o4, %lo(HI_MAGIC), %o3
19 ldub [%o0], %o5
20 cmp %o5, 0
21 be 2f
22 add %o0, 1, %o0
23 andcc %o0, 3, %g0
24 be 5f
25 sethi %hi(LO_MAGIC), %o4
26 ldub [%o0], %o5
27 cmp %o5, 0
28 be 3f
29 add %o0, 1, %o0
30 b 8f
31 or %o4, %lo(LO_MAGIC), %o2
321:
33 retl
34 mov 0, %o0
352:
36 retl
37 mov 1, %o0
383:
39 retl
40 mov 2, %o0
41
42 .align 4
43 .global strlen
44strlen:
45 mov %o0, %o1
46 andcc %o0, 3, %g0
47 bne 0b
48 sethi %hi(HI_MAGIC), %o4
49 or %o4, %lo(HI_MAGIC), %o3
504:
51 sethi %hi(LO_MAGIC), %o4
525:
53 or %o4, %lo(LO_MAGIC), %o2
548:
55 ld [%o0], %o5
562:
57 sub %o5, %o2, %o4
58 andcc %o4, %o3, %g0
59 be 8b
60 add %o0, 4, %o0
61
62 /* Check every byte. */
63 srl %o5, 24, %g5
64 andcc %g5, 0xff, %g0
65 be 1f
66 add %o0, -4, %o4
67 srl %o5, 16, %g5
68 andcc %g5, 0xff, %g0
69 be 1f
70 add %o4, 1, %o4
71 srl %o5, 8, %g5
72 andcc %g5, 0xff, %g0
73 be 1f
74 add %o4, 1, %o4
75 andcc %o5, 0xff, %g0
76 bne,a 2b
77 ld [%o0], %o5
78 add %o4, 1, %o4
791:
80 retl
81 sub %o4, %o1, %o0
diff --git a/arch/sparc/lib/strlen_user.S b/arch/sparc/lib/strlen_user.S
new file mode 100644
index 000000000000..8c8a371df3c9
--- /dev/null
+++ b/arch/sparc/lib/strlen_user.S
@@ -0,0 +1,109 @@
1/* strlen_user.S: Sparc optimized strlen_user code
2 *
3 * Return length of string in userspace including terminating 0
4 * or 0 for error
5 *
6 * Copyright (C) 1991,1996 Free Software Foundation
7 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
8 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
9 */
10
11#define LO_MAGIC 0x01010101
12#define HI_MAGIC 0x80808080
13
1410:
15 ldub [%o0], %o5
16 cmp %o5, 0
17 be 1f
18 add %o0, 1, %o0
19 andcc %o0, 3, %g0
20 be 4f
21 or %o4, %lo(HI_MAGIC), %o3
2211:
23 ldub [%o0], %o5
24 cmp %o5, 0
25 be 2f
26 add %o0, 1, %o0
27 andcc %o0, 3, %g0
28 be 5f
29 sethi %hi(LO_MAGIC), %o4
3012:
31 ldub [%o0], %o5
32 cmp %o5, 0
33 be 3f
34 add %o0, 1, %o0
35 b 13f
36 or %o4, %lo(LO_MAGIC), %o2
371:
38 retl
39 mov 1, %o0
402:
41 retl
42 mov 2, %o0
433:
44 retl
45 mov 3, %o0
46
47 .align 4
48 .global __strlen_user, __strnlen_user
49__strlen_user:
50 sethi %hi(32768), %o1
51__strnlen_user:
52 mov %o1, %g1
53 mov %o0, %o1
54 andcc %o0, 3, %g0
55 bne 10b
56 sethi %hi(HI_MAGIC), %o4
57 or %o4, %lo(HI_MAGIC), %o3
584:
59 sethi %hi(LO_MAGIC), %o4
605:
61 or %o4, %lo(LO_MAGIC), %o2
6213:
63 ld [%o0], %o5
642:
65 sub %o5, %o2, %o4
66 andcc %o4, %o3, %g0
67 bne 82f
68 add %o0, 4, %o0
69 sub %o0, %o1, %g2
7081: cmp %g2, %g1
71 blu 13b
72 mov %o0, %o4
73 ba,a 1f
74
75 /* Check every byte. */
7682: srl %o5, 24, %g5
77 andcc %g5, 0xff, %g0
78 be 1f
79 add %o0, -3, %o4
80 srl %o5, 16, %g5
81 andcc %g5, 0xff, %g0
82 be 1f
83 add %o4, 1, %o4
84 srl %o5, 8, %g5
85 andcc %g5, 0xff, %g0
86 be 1f
87 add %o4, 1, %o4
88 andcc %o5, 0xff, %g0
89 bne 81b
90 sub %o0, %o1, %g2
91
92 add %o4, 1, %o4
931:
94 retl
95 sub %o4, %o1, %o0
96
97 .section .fixup,#alloc,#execinstr
98 .align 4
999:
100 retl
101 clr %o0
102
103 .section __ex_table,#alloc
104 .align 4
105
106 .word 10b, 9b
107 .word 11b, 9b
108 .word 12b, 9b
109 .word 13b, 9b
diff --git a/arch/sparc/lib/strncmp.S b/arch/sparc/lib/strncmp.S
new file mode 100644
index 000000000000..615626805d4b
--- /dev/null
+++ b/arch/sparc/lib/strncmp.S
@@ -0,0 +1,118 @@
1/* $Id: strncmp.S,v 1.2 1996/09/09 02:47:20 davem Exp $
2 * strncmp.S: Hand optimized Sparc assembly of GCC output from GNU libc
3 * generic strncmp routine.
4 */
5
6 .text
7 .align 4
8 .global __strncmp, strncmp
9__strncmp:
10strncmp:
11 mov %o0, %g3
12 mov 0, %o3
13
14 cmp %o2, 3
15 ble 7f
16 mov 0, %g2
17
18 sra %o2, 2, %o4
19 ldub [%g3], %o3
20
210:
22 ldub [%o1], %g2
23 add %g3, 1, %g3
24 and %o3, 0xff, %o0
25
26 cmp %o0, 0
27 be 8f
28 add %o1, 1, %o1
29
30 cmp %o0, %g2
31 be,a 1f
32 ldub [%g3], %o3
33
34 retl
35 sub %o0, %g2, %o0
36
371:
38 ldub [%o1], %g2
39 add %g3,1, %g3
40 and %o3, 0xff, %o0
41
42 cmp %o0, 0
43 be 8f
44 add %o1, 1, %o1
45
46 cmp %o0, %g2
47 be,a 1f
48 ldub [%g3], %o3
49
50 retl
51 sub %o0, %g2, %o0
52
531:
54 ldub [%o1], %g2
55 add %g3, 1, %g3
56 and %o3, 0xff, %o0
57
58 cmp %o0, 0
59 be 8f
60 add %o1, 1, %o1
61
62 cmp %o0, %g2
63 be,a 1f
64 ldub [%g3], %o3
65
66 retl
67 sub %o0, %g2, %o0
68
691:
70 ldub [%o1], %g2
71 add %g3, 1, %g3
72 and %o3, 0xff, %o0
73
74 cmp %o0, 0
75 be 8f
76 add %o1, 1, %o1
77
78 cmp %o0, %g2
79 be 1f
80 add %o4, -1, %o4
81
82 retl
83 sub %o0, %g2, %o0
84
851:
86
87 cmp %o4, 0
88 bg,a 0b
89 ldub [%g3], %o3
90
91 b 7f
92 and %o2, 3, %o2
93
949:
95 ldub [%o1], %g2
96 add %g3, 1, %g3
97 and %o3, 0xff, %o0
98
99 cmp %o0, 0
100 be 8f
101 add %o1, 1, %o1
102
103 cmp %o0, %g2
104 be 7f
105 add %o2, -1, %o2
106
1078:
108 retl
109 sub %o0, %g2, %o0
110
1117:
112 cmp %o2, 0
113 bg,a 9b
114 ldub [%g3], %o3
115
116 and %g2, 0xff, %o0
117 retl
118 sub %o3, %o0, %o0
diff --git a/arch/sparc/lib/strncpy_from_user.S b/arch/sparc/lib/strncpy_from_user.S
new file mode 100644
index 000000000000..d77198976a66
--- /dev/null
+++ b/arch/sparc/lib/strncpy_from_user.S
@@ -0,0 +1,47 @@
1/* strncpy_from_user.S: Sparc strncpy from userspace.
2 *
3 * Copyright(C) 1996 David S. Miller
4 */
5
6#include <asm/ptrace.h>
7#include <asm/errno.h>
8
9 .text
10 .align 4
11
12 /* Must return:
13 *
14 * -EFAULT for an exception
15 * count if we hit the buffer limit
16 * bytes copied if we hit a null byte
17 */
18
19 .globl __strncpy_from_user
20__strncpy_from_user:
21 /* %o0=dest, %o1=src, %o2=count */
22 mov %o2, %o3
231:
24 subcc %o2, 1, %o2
25 bneg 2f
26 nop
2710:
28 ldub [%o1], %o4
29 add %o0, 1, %o0
30 cmp %o4, 0
31 add %o1, 1, %o1
32 bne 1b
33 stb %o4, [%o0 - 1]
342:
35 add %o2, 1, %o0
36 retl
37 sub %o3, %o0, %o0
38
39 .section .fixup,#alloc,#execinstr
40 .align 4
414:
42 retl
43 mov -EFAULT, %o0
44
45 .section __ex_table,#alloc
46 .align 4
47 .word 10b, 4b
diff --git a/arch/sparc/lib/udiv.S b/arch/sparc/lib/udiv.S
new file mode 100644
index 000000000000..2abfc6b0f3e9
--- /dev/null
+++ b/arch/sparc/lib/udiv.S
@@ -0,0 +1,355 @@
1/* $Id: udiv.S,v 1.4 1996/09/30 02:22:38 davem Exp $
2 * udiv.S: This routine was taken from glibc-1.09 and is covered
3 * by the GNU Library General Public License Version 2.
4 */
5
6
7/* This file is generated from divrem.m4; DO NOT EDIT! */
8/*
9 * Division and remainder, from Appendix E of the Sparc Version 8
10 * Architecture Manual, with fixes from Gordon Irlam.
11 */
12
13/*
14 * Input: dividend and divisor in %o0 and %o1 respectively.
15 *
16 * m4 parameters:
17 * .udiv name of function to generate
18 * div div=div => %o0 / %o1; div=rem => %o0 % %o1
19 * false false=true => signed; false=false => unsigned
20 *
21 * Algorithm parameters:
22 * N how many bits per iteration we try to get (4)
23 * WORDSIZE total number of bits (32)
24 *
25 * Derived constants:
26 * TOPBITS number of bits in the top decade of a number
27 *
28 * Important variables:
29 * Q the partial quotient under development (initially 0)
30 * R the remainder so far, initially the dividend
31 * ITER number of main division loop iterations required;
32 * equal to ceil(log2(quotient) / N). Note that this
33 * is the log base (2^N) of the quotient.
34 * V the current comparand, initially divisor*2^(ITER*N-1)
35 *
36 * Cost:
37 * Current estimate for non-large dividend is
38 * ceil(log2(quotient) / N) * (10 + 7N/2) + C
39 * A large dividend is one greater than 2^(31-TOPBITS) and takes a
40 * different path, as the upper bits of the quotient must be developed
41 * one bit at a time.
42 */
43
44
45 .globl .udiv
46.udiv:
47
48 ! Ready to divide. Compute size of quotient; scale comparand.
49 orcc %o1, %g0, %o5
50 bne 1f
51 mov %o0, %o3
52
53 ! Divide by zero trap. If it returns, return 0 (about as
54 ! wrong as possible, but that is what SunOS does...).
55 ta ST_DIV0
56 retl
57 clr %o0
58
591:
60 cmp %o3, %o5 ! if %o1 exceeds %o0, done
61 blu Lgot_result ! (and algorithm fails otherwise)
62 clr %o2
63
64 sethi %hi(1 << (32 - 4 - 1)), %g1
65
66 cmp %o3, %g1
67 blu Lnot_really_big
68 clr %o4
69
70 ! Here the dividend is >= 2**(31-N) or so. We must be careful here,
71 ! as our usual N-at-a-shot divide step will cause overflow and havoc.
72 ! The number of bits in the result here is N*ITER+SC, where SC <= N.
73 ! Compute ITER in an unorthodox manner: know we need to shift V into
74 ! the top decade: so do not even bother to compare to R.
75 1:
76 cmp %o5, %g1
77 bgeu 3f
78 mov 1, %g7
79
80 sll %o5, 4, %o5
81
82 b 1b
83 add %o4, 1, %o4
84
85 ! Now compute %g7.
86 2:
87 addcc %o5, %o5, %o5
88 bcc Lnot_too_big
89 add %g7, 1, %g7
90
91 ! We get here if the %o1 overflowed while shifting.
92 ! This means that %o3 has the high-order bit set.
93 ! Restore %o5 and subtract from %o3.
94 sll %g1, 4, %g1 ! high order bit
95 srl %o5, 1, %o5 ! rest of %o5
96 add %o5, %g1, %o5
97
98 b Ldo_single_div
99 sub %g7, 1, %g7
100
101 Lnot_too_big:
102 3:
103 cmp %o5, %o3
104 blu 2b
105 nop
106
107 be Ldo_single_div
108 nop
109 /* NB: these are commented out in the V8-Sparc manual as well */
110 /* (I do not understand this) */
111 ! %o5 > %o3: went too far: back up 1 step
112 ! srl %o5, 1, %o5
113 ! dec %g7
114 ! do single-bit divide steps
115 !
116 ! We have to be careful here. We know that %o3 >= %o5, so we can do the
117 ! first divide step without thinking. BUT, the others are conditional,
118 ! and are only done if %o3 >= 0. Because both %o3 and %o5 may have the high-
119 ! order bit set in the first step, just falling into the regular
120 ! division loop will mess up the first time around.
121 ! So we unroll slightly...
122 Ldo_single_div:
123 subcc %g7, 1, %g7
124 bl Lend_regular_divide
125 nop
126
127 sub %o3, %o5, %o3
128 mov 1, %o2
129
130 b Lend_single_divloop
131 nop
132 Lsingle_divloop:
133 sll %o2, 1, %o2
134 bl 1f
135 srl %o5, 1, %o5
136 ! %o3 >= 0
137 sub %o3, %o5, %o3
138 b 2f
139 add %o2, 1, %o2
140 1: ! %o3 < 0
141 add %o3, %o5, %o3
142 sub %o2, 1, %o2
143 2:
144 Lend_single_divloop:
145 subcc %g7, 1, %g7
146 bge Lsingle_divloop
147 tst %o3
148
149 b,a Lend_regular_divide
150
151Lnot_really_big:
1521:
153 sll %o5, 4, %o5
154
155 cmp %o5, %o3
156 bleu 1b
157 addcc %o4, 1, %o4
158
159 be Lgot_result
160 sub %o4, 1, %o4
161
162 tst %o3 ! set up for initial iteration
163Ldivloop:
164 sll %o2, 4, %o2
165 ! depth 1, accumulated bits 0
166 bl L.1.16
167 srl %o5,1,%o5
168 ! remainder is positive
169 subcc %o3,%o5,%o3
170 ! depth 2, accumulated bits 1
171 bl L.2.17
172 srl %o5,1,%o5
173 ! remainder is positive
174 subcc %o3,%o5,%o3
175 ! depth 3, accumulated bits 3
176 bl L.3.19
177 srl %o5,1,%o5
178 ! remainder is positive
179 subcc %o3,%o5,%o3
180 ! depth 4, accumulated bits 7
181 bl L.4.23
182 srl %o5,1,%o5
183 ! remainder is positive
184 subcc %o3,%o5,%o3
185 b 9f
186 add %o2, (7*2+1), %o2
187
188L.4.23:
189 ! remainder is negative
190 addcc %o3,%o5,%o3
191 b 9f
192 add %o2, (7*2-1), %o2
193
194L.3.19:
195 ! remainder is negative
196 addcc %o3,%o5,%o3
197 ! depth 4, accumulated bits 5
198 bl L.4.21
199 srl %o5,1,%o5
200 ! remainder is positive
201 subcc %o3,%o5,%o3
202 b 9f
203 add %o2, (5*2+1), %o2
204
205L.4.21:
206 ! remainder is negative
207 addcc %o3,%o5,%o3
208 b 9f
209 add %o2, (5*2-1), %o2
210
211L.2.17:
212 ! remainder is negative
213 addcc %o3,%o5,%o3
214 ! depth 3, accumulated bits 1
215 bl L.3.17
216 srl %o5,1,%o5
217 ! remainder is positive
218 subcc %o3,%o5,%o3
219 ! depth 4, accumulated bits 3
220 bl L.4.19
221 srl %o5,1,%o5
222 ! remainder is positive
223 subcc %o3,%o5,%o3
224 b 9f
225 add %o2, (3*2+1), %o2
226
227L.4.19:
228 ! remainder is negative
229 addcc %o3,%o5,%o3
230 b 9f
231 add %o2, (3*2-1), %o2
232
233L.3.17:
234 ! remainder is negative
235 addcc %o3,%o5,%o3
236 ! depth 4, accumulated bits 1
237 bl L.4.17
238 srl %o5,1,%o5
239 ! remainder is positive
240 subcc %o3,%o5,%o3
241 b 9f
242 add %o2, (1*2+1), %o2
243
244L.4.17:
245 ! remainder is negative
246 addcc %o3,%o5,%o3
247 b 9f
248 add %o2, (1*2-1), %o2
249
250L.1.16:
251 ! remainder is negative
252 addcc %o3,%o5,%o3
253 ! depth 2, accumulated bits -1
254 bl L.2.15
255 srl %o5,1,%o5
256 ! remainder is positive
257 subcc %o3,%o5,%o3
258 ! depth 3, accumulated bits -1
259 bl L.3.15
260 srl %o5,1,%o5
261 ! remainder is positive
262 subcc %o3,%o5,%o3
263 ! depth 4, accumulated bits -1
264 bl L.4.15
265 srl %o5,1,%o5
266 ! remainder is positive
267 subcc %o3,%o5,%o3
268 b 9f
269 add %o2, (-1*2+1), %o2
270
271L.4.15:
272 ! remainder is negative
273 addcc %o3,%o5,%o3
274 b 9f
275 add %o2, (-1*2-1), %o2
276
277L.3.15:
278 ! remainder is negative
279 addcc %o3,%o5,%o3
280 ! depth 4, accumulated bits -3
281 bl L.4.13
282 srl %o5,1,%o5
283 ! remainder is positive
284 subcc %o3,%o5,%o3
285 b 9f
286 add %o2, (-3*2+1), %o2
287
288L.4.13:
289 ! remainder is negative
290 addcc %o3,%o5,%o3
291 b 9f
292 add %o2, (-3*2-1), %o2
293
294L.2.15:
295 ! remainder is negative
296 addcc %o3,%o5,%o3
297 ! depth 3, accumulated bits -3
298 bl L.3.13
299 srl %o5,1,%o5
300 ! remainder is positive
301 subcc %o3,%o5,%o3
302 ! depth 4, accumulated bits -5
303 bl L.4.11
304 srl %o5,1,%o5
305 ! remainder is positive
306 subcc %o3,%o5,%o3
307 b 9f
308 add %o2, (-5*2+1), %o2
309
310L.4.11:
311 ! remainder is negative
312 addcc %o3,%o5,%o3
313 b 9f
314 add %o2, (-5*2-1), %o2
315
316L.3.13:
317 ! remainder is negative
318 addcc %o3,%o5,%o3
319 ! depth 4, accumulated bits -7
320 bl L.4.9
321 srl %o5,1,%o5
322 ! remainder is positive
323 subcc %o3,%o5,%o3
324 b 9f
325 add %o2, (-7*2+1), %o2
326
327L.4.9:
328 ! remainder is negative
329 addcc %o3,%o5,%o3
330 b 9f
331 add %o2, (-7*2-1), %o2
332
333 9:
334Lend_regular_divide:
335 subcc %o4, 1, %o4
336 bge Ldivloop
337 tst %o3
338
339 bl,a Lgot_result
340 ! non-restoring fixup here (one instruction only!)
341 sub %o2, 1, %o2
342
343Lgot_result:
344
345 retl
346 mov %o2, %o0
347
348 .globl .udiv_patch
349.udiv_patch:
350 wr %g0, 0x0, %y
351 nop
352 nop
353 retl
354 udiv %o0, %o1, %o0
355 nop
diff --git a/arch/sparc/lib/udivdi3.S b/arch/sparc/lib/udivdi3.S
new file mode 100644
index 000000000000..b430f1f0ef62
--- /dev/null
+++ b/arch/sparc/lib/udivdi3.S
@@ -0,0 +1,258 @@
1/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
2
3This file is part of GNU CC.
4
5GNU CC is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
7the Free Software Foundation; either version 2, or (at your option)
8any later version.
9
10GNU CC is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with GNU CC; see the file COPYING. If not, write to
17the Free Software Foundation, 59 Temple Place - Suite 330,
18Boston, MA 02111-1307, USA. */
19
20 .text
21 .align 4
22 .globl __udivdi3
23__udivdi3:
24 save %sp,-104,%sp
25 mov %i3,%o3
26 cmp %i2,0
27 bne .LL40
28 mov %i1,%i3
29 cmp %o3,%i0
30 bleu .LL41
31 mov %i3,%o1
32 ! Inlined udiv_qrnnd
33 mov 32,%g1
34 subcc %i0,%o3,%g0
351: bcs 5f
36 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
37 sub %i0,%o3,%i0 ! this kills msb of n
38 addx %i0,%i0,%i0 ! so this cannot give carry
39 subcc %g1,1,%g1
402: bne 1b
41 subcc %i0,%o3,%g0
42 bcs 3f
43 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
44 b 3f
45 sub %i0,%o3,%i0 ! this kills msb of n
464: sub %i0,%o3,%i0
475: addxcc %i0,%i0,%i0
48 bcc 2b
49 subcc %g1,1,%g1
50! Got carry from n. Subtract next step to cancel this carry.
51 bne 4b
52 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
53 sub %i0,%o3,%i0
543: xnor %o1,0,%o1
55 ! End of inline udiv_qrnnd
56 b .LL45
57 mov 0,%o2
58.LL41:
59 cmp %o3,0
60 bne .LL77
61 mov %i0,%o2
62 mov 1,%o0
63 call .udiv,0
64 mov 0,%o1
65 mov %o0,%o3
66 mov %i0,%o2
67.LL77:
68 mov 0,%o4
69 ! Inlined udiv_qrnnd
70 mov 32,%g1
71 subcc %o4,%o3,%g0
721: bcs 5f
73 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
74 sub %o4,%o3,%o4 ! this kills msb of n
75 addx %o4,%o4,%o4 ! so this cannot give carry
76 subcc %g1,1,%g1
772: bne 1b
78 subcc %o4,%o3,%g0
79 bcs 3f
80 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
81 b 3f
82 sub %o4,%o3,%o4 ! this kills msb of n
834: sub %o4,%o3,%o4
845: addxcc %o4,%o4,%o4
85 bcc 2b
86 subcc %g1,1,%g1
87! Got carry from n. Subtract next step to cancel this carry.
88 bne 4b
89 addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
90 sub %o4,%o3,%o4
913: xnor %o2,0,%o2
92 ! End of inline udiv_qrnnd
93 mov %o4,%i0
94 mov %i3,%o1
95 ! Inlined udiv_qrnnd
96 mov 32,%g1
97 subcc %i0,%o3,%g0
981: bcs 5f
99 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
100 sub %i0,%o3,%i0 ! this kills msb of n
101 addx %i0,%i0,%i0 ! so this cannot give carry
102 subcc %g1,1,%g1
1032: bne 1b
104 subcc %i0,%o3,%g0
105 bcs 3f
106 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
107 b 3f
108 sub %i0,%o3,%i0 ! this kills msb of n
1094: sub %i0,%o3,%i0
1105: addxcc %i0,%i0,%i0
111 bcc 2b
112 subcc %g1,1,%g1
113! Got carry from n. Subtract next step to cancel this carry.
114 bne 4b
115 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
116 sub %i0,%o3,%i0
1173: xnor %o1,0,%o1
118 ! End of inline udiv_qrnnd
119 b .LL78
120 mov %o1,%l1
121.LL40:
122 cmp %i2,%i0
123 bleu .LL46
124 sethi %hi(65535),%o0
125 b .LL73
126 mov 0,%o1
127.LL46:
128 or %o0,%lo(65535),%o0
129 cmp %i2,%o0
130 bgu .LL53
131 mov %i2,%o1
132 cmp %i2,256
133 addx %g0,-1,%o0
134 b .LL59
135 and %o0,8,%o2
136.LL53:
137 sethi %hi(16777215),%o0
138 or %o0,%lo(16777215),%o0
139 cmp %o1,%o0
140 bgu .LL59
141 mov 24,%o2
142 mov 16,%o2
143.LL59:
144 srl %o1,%o2,%o1
145 sethi %hi(__clz_tab),%o0
146 or %o0,%lo(__clz_tab),%o0
147 ldub [%o1+%o0],%o0
148 add %o0,%o2,%o0
149 mov 32,%o1
150 subcc %o1,%o0,%o2
151 bne,a .LL67
152 mov 32,%o0
153 cmp %i0,%i2
154 bgu .LL69
155 cmp %i3,%o3
156 blu .LL73
157 mov 0,%o1
158.LL69:
159 b .LL73
160 mov 1,%o1
161.LL67:
162 sub %o0,%o2,%o0
163 sll %i2,%o2,%i2
164 srl %o3,%o0,%o1
165 or %i2,%o1,%i2
166 sll %o3,%o2,%o3
167 srl %i0,%o0,%o1
168 sll %i0,%o2,%i0
169 srl %i3,%o0,%o0
170 or %i0,%o0,%i0
171 sll %i3,%o2,%i3
172 mov %i0,%o5
173 mov %o1,%o4
174 ! Inlined udiv_qrnnd
175 mov 32,%g1
176 subcc %o4,%i2,%g0
1771: bcs 5f
178 addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
179 sub %o4,%i2,%o4 ! this kills msb of n
180 addx %o4,%o4,%o4 ! so this cannot give carry
181 subcc %g1,1,%g1
1822: bne 1b
183 subcc %o4,%i2,%g0
184 bcs 3f
185 addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
186 b 3f
187 sub %o4,%i2,%o4 ! this kills msb of n
1884: sub %o4,%i2,%o4
1895: addxcc %o4,%o4,%o4
190 bcc 2b
191 subcc %g1,1,%g1
192! Got carry from n. Subtract next step to cancel this carry.
193 bne 4b
194 addcc %o5,%o5,%o5 ! shift n1n0 and a 0-bit in lsb
195 sub %o4,%i2,%o4
1963: xnor %o5,0,%o5
197 ! End of inline udiv_qrnnd
198 mov %o4,%i0
199 mov %o5,%o1
200 ! Inlined umul_ppmm
201 wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
202 sra %o3,31,%g2 ! Do not move this insn
203 and %o1,%g2,%g2 ! Do not move this insn
204 andcc %g0,0,%g1 ! Do not move this insn
205 mulscc %g1,%o3,%g1
206 mulscc %g1,%o3,%g1
207 mulscc %g1,%o3,%g1
208 mulscc %g1,%o3,%g1
209 mulscc %g1,%o3,%g1
210 mulscc %g1,%o3,%g1
211 mulscc %g1,%o3,%g1
212 mulscc %g1,%o3,%g1
213 mulscc %g1,%o3,%g1
214 mulscc %g1,%o3,%g1
215 mulscc %g1,%o3,%g1
216 mulscc %g1,%o3,%g1
217 mulscc %g1,%o3,%g1
218 mulscc %g1,%o3,%g1
219 mulscc %g1,%o3,%g1
220 mulscc %g1,%o3,%g1
221 mulscc %g1,%o3,%g1
222 mulscc %g1,%o3,%g1
223 mulscc %g1,%o3,%g1
224 mulscc %g1,%o3,%g1
225 mulscc %g1,%o3,%g1
226 mulscc %g1,%o3,%g1
227 mulscc %g1,%o3,%g1
228 mulscc %g1,%o3,%g1
229 mulscc %g1,%o3,%g1
230 mulscc %g1,%o3,%g1
231 mulscc %g1,%o3,%g1
232 mulscc %g1,%o3,%g1
233 mulscc %g1,%o3,%g1
234 mulscc %g1,%o3,%g1
235 mulscc %g1,%o3,%g1
236 mulscc %g1,%o3,%g1
237 mulscc %g1,0,%g1
238 add %g1,%g2,%o0
239 rd %y,%o2
240 cmp %o0,%i0
241 bgu,a .LL73
242 add %o1,-1,%o1
243 bne,a .LL45
244 mov 0,%o2
245 cmp %o2,%i3
246 bleu .LL45
247 mov 0,%o2
248 add %o1,-1,%o1
249.LL73:
250 mov 0,%o2
251.LL45:
252 mov %o1,%l1
253.LL78:
254 mov %o2,%l0
255 mov %l0,%i0
256 mov %l1,%i1
257 ret
258 restore
diff --git a/arch/sparc/lib/umul.S b/arch/sparc/lib/umul.S
new file mode 100644
index 000000000000..a784720a8a22
--- /dev/null
+++ b/arch/sparc/lib/umul.S
@@ -0,0 +1,169 @@
1/* $Id: umul.S,v 1.4 1996/09/30 02:22:39 davem Exp $
2 * umul.S: This routine was taken from glibc-1.09 and is covered
3 * by the GNU Library General Public License Version 2.
4 */
5
6
7/*
8 * Unsigned multiply. Returns %o0 * %o1 in %o1%o0 (i.e., %o1 holds the
9 * upper 32 bits of the 64-bit product).
10 *
11 * This code optimizes short (less than 13-bit) multiplies. Short
12 * multiplies require 25 instruction cycles, and long ones require
13 * 45 instruction cycles.
14 *
15 * On return, overflow has occurred (%o1 is not zero) if and only if
16 * the Z condition code is clear, allowing, e.g., the following:
17 *
18 * call .umul
19 * nop
20 * bnz overflow (or tnz)
21 */
22
23 .globl .umul
24.umul:
25 or %o0, %o1, %o4
26 mov %o0, %y ! multiplier -> Y
27
28 andncc %o4, 0xfff, %g0 ! test bits 12..31 of *both* args
29 be Lmul_shortway ! if zero, can do it the short way
30 andcc %g0, %g0, %o4 ! zero the partial product and clear N and V
31
32 /*
33 * Long multiply. 32 steps, followed by a final shift step.
34 */
35 mulscc %o4, %o1, %o4 ! 1
36 mulscc %o4, %o1, %o4 ! 2
37 mulscc %o4, %o1, %o4 ! 3
38 mulscc %o4, %o1, %o4 ! 4
39 mulscc %o4, %o1, %o4 ! 5
40 mulscc %o4, %o1, %o4 ! 6
41 mulscc %o4, %o1, %o4 ! 7
42 mulscc %o4, %o1, %o4 ! 8
43 mulscc %o4, %o1, %o4 ! 9
44 mulscc %o4, %o1, %o4 ! 10
45 mulscc %o4, %o1, %o4 ! 11
46 mulscc %o4, %o1, %o4 ! 12
47 mulscc %o4, %o1, %o4 ! 13
48 mulscc %o4, %o1, %o4 ! 14
49 mulscc %o4, %o1, %o4 ! 15
50 mulscc %o4, %o1, %o4 ! 16
51 mulscc %o4, %o1, %o4 ! 17
52 mulscc %o4, %o1, %o4 ! 18
53 mulscc %o4, %o1, %o4 ! 19
54 mulscc %o4, %o1, %o4 ! 20
55 mulscc %o4, %o1, %o4 ! 21
56 mulscc %o4, %o1, %o4 ! 22
57 mulscc %o4, %o1, %o4 ! 23
58 mulscc %o4, %o1, %o4 ! 24
59 mulscc %o4, %o1, %o4 ! 25
60 mulscc %o4, %o1, %o4 ! 26
61 mulscc %o4, %o1, %o4 ! 27
62 mulscc %o4, %o1, %o4 ! 28
63 mulscc %o4, %o1, %o4 ! 29
64 mulscc %o4, %o1, %o4 ! 30
65 mulscc %o4, %o1, %o4 ! 31
66 mulscc %o4, %o1, %o4 ! 32
67 mulscc %o4, %g0, %o4 ! final shift
68
69
70 /*
71 * Normally, with the shift-and-add approach, if both numbers are
72 * positive you get the correct result. With 32-bit two's-complement
73 * numbers, -x is represented as
74 *
75 * x 32
76 * ( 2 - ------ ) mod 2 * 2
77 * 32
78 * 2
79 *
80 * (the `mod 2' subtracts 1 from 1.bbbb). To avoid lots of 2^32s,
81 * we can treat this as if the radix point were just to the left
82 * of the sign bit (multiply by 2^32), and get
83 *
84 * -x = (2 - x) mod 2
85 *
86 * Then, ignoring the `mod 2's for convenience:
87 *
88 * x * y = xy
89 * -x * y = 2y - xy
90 * x * -y = 2x - xy
91 * -x * -y = 4 - 2x - 2y + xy
92 *
93 * For signed multiplies, we subtract (x << 32) from the partial
94 * product to fix this problem for negative multipliers (see mul.s).
95 * Because of the way the shift into the partial product is calculated
96 * (N xor V), this term is automatically removed for the multiplicand,
97 * so we don't have to adjust.
98 *
99 * But for unsigned multiplies, the high order bit wasn't a sign bit,
100 * and the correction is wrong. So for unsigned multiplies where the
101 * high order bit is one, we end up with xy - (y << 32). To fix it
102 * we add y << 32.
103 */
104#if 0
105 tst %o1
106 bl,a 1f ! if %o1 < 0 (high order bit = 1),
107 add %o4, %o0, %o4 ! %o4 += %o0 (add y to upper half)
108
1091:
110 rd %y, %o0 ! get lower half of product
111 retl
112 addcc %o4, %g0, %o1 ! put upper half in place and set Z for %o1==0
113#else
114 /* Faster code from tege@sics.se. */
115 sra %o1, 31, %o2 ! make mask from sign bit
116 and %o0, %o2, %o2 ! %o2 = 0 or %o0, depending on sign of %o1
117 rd %y, %o0 ! get lower half of product
118 retl
119 addcc %o4, %o2, %o1 ! add compensation and put upper half in place
120#endif
121
122Lmul_shortway:
123 /*
124 * Short multiply. 12 steps, followed by a final shift step.
125 * The resulting bits are off by 12 and (32-12) = 20 bit positions,
126 * but there is no problem with %o0 being negative (unlike above),
127 * and overflow is impossible (the answer is at most 24 bits long).
128 */
129 mulscc %o4, %o1, %o4 ! 1
130 mulscc %o4, %o1, %o4 ! 2
131 mulscc %o4, %o1, %o4 ! 3
132 mulscc %o4, %o1, %o4 ! 4
133 mulscc %o4, %o1, %o4 ! 5
134 mulscc %o4, %o1, %o4 ! 6
135 mulscc %o4, %o1, %o4 ! 7
136 mulscc %o4, %o1, %o4 ! 8
137 mulscc %o4, %o1, %o4 ! 9
138 mulscc %o4, %o1, %o4 ! 10
139 mulscc %o4, %o1, %o4 ! 11
140 mulscc %o4, %o1, %o4 ! 12
141 mulscc %o4, %g0, %o4 ! final shift
142
143 /*
144 * %o4 has 20 of the bits that should be in the result; %y has
145 * the bottom 12 (as %y's top 12). That is:
146 *
147 * %o4 %y
148 * +----------------+----------------+
149 * | -12- | -20- | -12- | -20- |
150 * +------(---------+------)---------+
151 * -----result-----
152 *
153 * The 12 bits of %o4 left of the `result' area are all zero;
154 * in fact, all top 20 bits of %o4 are zero.
155 */
156
157 rd %y, %o5
158 sll %o4, 12, %o0 ! shift middle bits left 12
159 srl %o5, 20, %o5 ! shift low bits right 20
160 or %o5, %o0, %o0
161 retl
162 addcc %g0, %g0, %o1 ! %o1 = zero, and set Z
163
164 .globl .umul_patch
165.umul_patch:
166 umul %o0, %o1, %o0
167 retl
168 rd %y, %o1
169 nop
diff --git a/arch/sparc/lib/urem.S b/arch/sparc/lib/urem.S
new file mode 100644
index 000000000000..ec7f0c502c56
--- /dev/null
+++ b/arch/sparc/lib/urem.S
@@ -0,0 +1,355 @@
1/* $Id: urem.S,v 1.4 1996/09/30 02:22:42 davem Exp $
2 * urem.S: This routine was taken from glibc-1.09 and is covered
3 * by the GNU Library General Public License Version 2.
4 */
5
6/* This file is generated from divrem.m4; DO NOT EDIT! */
7/*
8 * Division and remainder, from Appendix E of the Sparc Version 8
9 * Architecture Manual, with fixes from Gordon Irlam.
10 */
11
12/*
13 * Input: dividend and divisor in %o0 and %o1 respectively.
14 *
15 * m4 parameters:
16 * .urem name of function to generate
17 * rem rem=div => %o0 / %o1; rem=rem => %o0 % %o1
18 * false false=true => signed; false=false => unsigned
19 *
20 * Algorithm parameters:
21 * N how many bits per iteration we try to get (4)
22 * WORDSIZE total number of bits (32)
23 *
24 * Derived constants:
25 * TOPBITS number of bits in the top decade of a number
26 *
27 * Important variables:
28 * Q the partial quotient under development (initially 0)
29 * R the remainder so far, initially the dividend
30 * ITER number of main division loop iterations required;
31 * equal to ceil(log2(quotient) / N). Note that this
32 * is the log base (2^N) of the quotient.
33 * V the current comparand, initially divisor*2^(ITER*N-1)
34 *
35 * Cost:
36 * Current estimate for non-large dividend is
37 * ceil(log2(quotient) / N) * (10 + 7N/2) + C
38 * A large dividend is one greater than 2^(31-TOPBITS) and takes a
39 * different path, as the upper bits of the quotient must be developed
40 * one bit at a time.
41 */
42
43 .globl .urem
44.urem:
45
46 ! Ready to divide. Compute size of quotient; scale comparand.
47 orcc %o1, %g0, %o5
48 bne 1f
49 mov %o0, %o3
50
51 ! Divide by zero trap. If it returns, return 0 (about as
52 ! wrong as possible, but that is what SunOS does...).
53 ta ST_DIV0
54 retl
55 clr %o0
56
571:
58 cmp %o3, %o5 ! if %o1 exceeds %o0, done
59 blu Lgot_result ! (and algorithm fails otherwise)
60 clr %o2
61
62 sethi %hi(1 << (32 - 4 - 1)), %g1
63
64 cmp %o3, %g1
65 blu Lnot_really_big
66 clr %o4
67
68 ! Here the dividend is >= 2**(31-N) or so. We must be careful here,
69 ! as our usual N-at-a-shot divide step will cause overflow and havoc.
70 ! The number of bits in the result here is N*ITER+SC, where SC <= N.
71 ! Compute ITER in an unorthodox manner: know we need to shift V into
72 ! the top decade: so do not even bother to compare to R.
73 1:
74 cmp %o5, %g1
75 bgeu 3f
76 mov 1, %g7
77
78 sll %o5, 4, %o5
79
80 b 1b
81 add %o4, 1, %o4
82
83 ! Now compute %g7.
84 2:
85 addcc %o5, %o5, %o5
86 bcc Lnot_too_big
87 add %g7, 1, %g7
88
89 ! We get here if the %o1 overflowed while shifting.
90 ! This means that %o3 has the high-order bit set.
91 ! Restore %o5 and subtract from %o3.
92 sll %g1, 4, %g1 ! high order bit
93 srl %o5, 1, %o5 ! rest of %o5
94 add %o5, %g1, %o5
95
96 b Ldo_single_div
97 sub %g7, 1, %g7
98
99 Lnot_too_big:
100 3:
101 cmp %o5, %o3
102 blu 2b
103 nop
104
105 be Ldo_single_div
106 nop
107 /* NB: these are commented out in the V8-Sparc manual as well */
108 /* (I do not understand this) */
109 ! %o5 > %o3: went too far: back up 1 step
110 ! srl %o5, 1, %o5
111 ! dec %g7
112 ! do single-bit divide steps
113 !
114 ! We have to be careful here. We know that %o3 >= %o5, so we can do the
115 ! first divide step without thinking. BUT, the others are conditional,
116 ! and are only done if %o3 >= 0. Because both %o3 and %o5 may have the high-
117 ! order bit set in the first step, just falling into the regular
118 ! division loop will mess up the first time around.
119 ! So we unroll slightly...
120 Ldo_single_div:
121 subcc %g7, 1, %g7
122 bl Lend_regular_divide
123 nop
124
125 sub %o3, %o5, %o3
126 mov 1, %o2
127
128 b Lend_single_divloop
129 nop
130 Lsingle_divloop:
131 sll %o2, 1, %o2
132 bl 1f
133 srl %o5, 1, %o5
134 ! %o3 >= 0
135 sub %o3, %o5, %o3
136 b 2f
137 add %o2, 1, %o2
138 1: ! %o3 < 0
139 add %o3, %o5, %o3
140 sub %o2, 1, %o2
141 2:
142 Lend_single_divloop:
143 subcc %g7, 1, %g7
144 bge Lsingle_divloop
145 tst %o3
146
147 b,a Lend_regular_divide
148
149Lnot_really_big:
1501:
151 sll %o5, 4, %o5
152
153 cmp %o5, %o3
154 bleu 1b
155 addcc %o4, 1, %o4
156
157 be Lgot_result
158 sub %o4, 1, %o4
159
160 tst %o3 ! set up for initial iteration
161Ldivloop:
162 sll %o2, 4, %o2
163 ! depth 1, accumulated bits 0
164 bl L.1.16
165 srl %o5,1,%o5
166 ! remainder is positive
167 subcc %o3,%o5,%o3
168 ! depth 2, accumulated bits 1
169 bl L.2.17
170 srl %o5,1,%o5
171 ! remainder is positive
172 subcc %o3,%o5,%o3
173 ! depth 3, accumulated bits 3
174 bl L.3.19
175 srl %o5,1,%o5
176 ! remainder is positive
177 subcc %o3,%o5,%o3
178 ! depth 4, accumulated bits 7
179 bl L.4.23
180 srl %o5,1,%o5
181 ! remainder is positive
182 subcc %o3,%o5,%o3
183 b 9f
184 add %o2, (7*2+1), %o2
185
186L.4.23:
187 ! remainder is negative
188 addcc %o3,%o5,%o3
189 b 9f
190 add %o2, (7*2-1), %o2
191
192L.3.19:
193 ! remainder is negative
194 addcc %o3,%o5,%o3
195 ! depth 4, accumulated bits 5
196 bl L.4.21
197 srl %o5,1,%o5
198 ! remainder is positive
199 subcc %o3,%o5,%o3
200 b 9f
201 add %o2, (5*2+1), %o2
202
203L.4.21:
204 ! remainder is negative
205 addcc %o3,%o5,%o3
206 b 9f
207 add %o2, (5*2-1), %o2
208
209L.2.17:
210 ! remainder is negative
211 addcc %o3,%o5,%o3
212 ! depth 3, accumulated bits 1
213 bl L.3.17
214 srl %o5,1,%o5
215 ! remainder is positive
216 subcc %o3,%o5,%o3
217 ! depth 4, accumulated bits 3
218 bl L.4.19
219 srl %o5,1,%o5
220 ! remainder is positive
221 subcc %o3,%o5,%o3
222 b 9f
223 add %o2, (3*2+1), %o2
224
225L.4.19:
226 ! remainder is negative
227 addcc %o3,%o5,%o3
228 b 9f
229 add %o2, (3*2-1), %o2
230
231L.3.17:
232 ! remainder is negative
233 addcc %o3,%o5,%o3
234 ! depth 4, accumulated bits 1
235 bl L.4.17
236 srl %o5,1,%o5
237 ! remainder is positive
238 subcc %o3,%o5,%o3
239 b 9f
240 add %o2, (1*2+1), %o2
241
242L.4.17:
243 ! remainder is negative
244 addcc %o3,%o5,%o3
245 b 9f
246 add %o2, (1*2-1), %o2
247
248L.1.16:
249 ! remainder is negative
250 addcc %o3,%o5,%o3
251 ! depth 2, accumulated bits -1
252 bl L.2.15
253 srl %o5,1,%o5
254 ! remainder is positive
255 subcc %o3,%o5,%o3
256 ! depth 3, accumulated bits -1
257 bl L.3.15
258 srl %o5,1,%o5
259 ! remainder is positive
260 subcc %o3,%o5,%o3
261 ! depth 4, accumulated bits -1
262 bl L.4.15
263 srl %o5,1,%o5
264 ! remainder is positive
265 subcc %o3,%o5,%o3
266 b 9f
267 add %o2, (-1*2+1), %o2
268
269L.4.15:
270 ! remainder is negative
271 addcc %o3,%o5,%o3
272 b 9f
273 add %o2, (-1*2-1), %o2
274
275L.3.15:
276 ! remainder is negative
277 addcc %o3,%o5,%o3
278 ! depth 4, accumulated bits -3
279 bl L.4.13
280 srl %o5,1,%o5
281 ! remainder is positive
282 subcc %o3,%o5,%o3
283 b 9f
284 add %o2, (-3*2+1), %o2
285
286L.4.13:
287 ! remainder is negative
288 addcc %o3,%o5,%o3
289 b 9f
290 add %o2, (-3*2-1), %o2
291
292L.2.15:
293 ! remainder is negative
294 addcc %o3,%o5,%o3
295 ! depth 3, accumulated bits -3
296 bl L.3.13
297 srl %o5,1,%o5
298 ! remainder is positive
299 subcc %o3,%o5,%o3
300 ! depth 4, accumulated bits -5
301 bl L.4.11
302 srl %o5,1,%o5
303 ! remainder is positive
304 subcc %o3,%o5,%o3
305 b 9f
306 add %o2, (-5*2+1), %o2
307
308L.4.11:
309 ! remainder is negative
310 addcc %o3,%o5,%o3
311 b 9f
312 add %o2, (-5*2-1), %o2
313
314L.3.13:
315 ! remainder is negative
316 addcc %o3,%o5,%o3
317 ! depth 4, accumulated bits -7
318 bl L.4.9
319 srl %o5,1,%o5
320 ! remainder is positive
321 subcc %o3,%o5,%o3
322 b 9f
323 add %o2, (-7*2+1), %o2
324
325L.4.9:
326 ! remainder is negative
327 addcc %o3,%o5,%o3
328 b 9f
329 add %o2, (-7*2-1), %o2
330
331 9:
332Lend_regular_divide:
333 subcc %o4, 1, %o4
334 bge Ldivloop
335 tst %o3
336
337 bl,a Lgot_result
338 ! non-restoring fixup here (one instruction only!)
339 add %o3, %o1, %o3
340
341Lgot_result:
342
343 retl
344 mov %o3, %o0
345
346 .globl .urem_patch
347.urem_patch:
348 wr %g0, 0x0, %y
349 nop
350 nop
351 nop
352 udiv %o0, %o1, %o2
353 umul %o2, %o1, %o2
354 retl
355 sub %o0, %o2, %o0
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