aboutsummaryrefslogtreecommitdiffstats
path: root/arch/avr32/lib
diff options
context:
space:
mode:
Diffstat (limited to 'arch/avr32/lib')
-rw-r--r--arch/avr32/lib/Makefile10
-rw-r--r--arch/avr32/lib/__avr32_asr64.S31
-rw-r--r--arch/avr32/lib/__avr32_lsl64.S31
-rw-r--r--arch/avr32/lib/__avr32_lsr64.S31
-rw-r--r--arch/avr32/lib/clear_user.S76
-rw-r--r--arch/avr32/lib/copy_user.S119
-rw-r--r--arch/avr32/lib/csum_partial.S47
-rw-r--r--arch/avr32/lib/csum_partial_copy_generic.S99
-rw-r--r--arch/avr32/lib/delay.c55
-rw-r--r--arch/avr32/lib/findbit.S154
-rw-r--r--arch/avr32/lib/io-readsl.S24
-rw-r--r--arch/avr32/lib/io-readsw.S43
-rw-r--r--arch/avr32/lib/io-writesl.S20
-rw-r--r--arch/avr32/lib/io-writesw.S38
-rw-r--r--arch/avr32/lib/libgcc.h33
-rw-r--r--arch/avr32/lib/longlong.h98
-rw-r--r--arch/avr32/lib/memcpy.S62
-rw-r--r--arch/avr32/lib/memset.S72
-rw-r--r--arch/avr32/lib/strncpy_from_user.S60
-rw-r--r--arch/avr32/lib/strnlen_user.S67
20 files changed, 1170 insertions, 0 deletions
diff --git a/arch/avr32/lib/Makefile b/arch/avr32/lib/Makefile
new file mode 100644
index 000000000000..09ac43e40522
--- /dev/null
+++ b/arch/avr32/lib/Makefile
@@ -0,0 +1,10 @@
1#
2# Makefile for AVR32-specific library files
3#
4
5lib-y := copy_user.o clear_user.o
6lib-y += strncpy_from_user.o strnlen_user.o
7lib-y += delay.o memset.o memcpy.o findbit.o
8lib-y += csum_partial.o csum_partial_copy_generic.o
9lib-y += io-readsw.o io-readsl.o io-writesw.o io-writesl.o
10lib-y += __avr32_lsl64.o __avr32_lsr64.o __avr32_asr64.o
diff --git a/arch/avr32/lib/__avr32_asr64.S b/arch/avr32/lib/__avr32_asr64.S
new file mode 100644
index 000000000000..368b6bca4c76
--- /dev/null
+++ b/arch/avr32/lib/__avr32_asr64.S
@@ -0,0 +1,31 @@
1/*
2 * Copyright (C) 2005-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 /*
10 * DWtype __avr32_asr64(DWtype u, word_type b)
11 */
12 .text
13 .global __avr32_asr64
14 .type __avr32_asr64,@function
15__avr32_asr64:
16 cp.w r12, 0
17 reteq r12
18
19 rsub r9, r12, 32
20 brle 1f
21
22 lsl r8, r11, r9
23 lsr r10, r10, r12
24 asr r11, r11, r12
25 or r10, r8
26 retal r12
27
281: neg r9
29 asr r10, r11, r9
30 asr r11, 31
31 retal r12
diff --git a/arch/avr32/lib/__avr32_lsl64.S b/arch/avr32/lib/__avr32_lsl64.S
new file mode 100644
index 000000000000..f1dbc2b36257
--- /dev/null
+++ b/arch/avr32/lib/__avr32_lsl64.S
@@ -0,0 +1,31 @@
1/*
2 * Copyright (C) 2005-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 /*
10 * DWtype __avr32_lsl64(DWtype u, word_type b)
11 */
12 .text
13 .global __avr32_lsl64
14 .type __avr32_lsl64,@function
15__avr32_lsl64:
16 cp.w r12, 0
17 reteq r12
18
19 rsub r9, r12, 32
20 brle 1f
21
22 lsr r8, r10, r9
23 lsl r10, r10, r12
24 lsl r11, r11, r12
25 or r11, r8
26 retal r12
27
281: neg r9
29 lsl r11, r10, r9
30 mov r10, 0
31 retal r12
diff --git a/arch/avr32/lib/__avr32_lsr64.S b/arch/avr32/lib/__avr32_lsr64.S
new file mode 100644
index 000000000000..e65bb7f0d24c
--- /dev/null
+++ b/arch/avr32/lib/__avr32_lsr64.S
@@ -0,0 +1,31 @@
1/*
2 * Copyright (C) 2005-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 /*
10 * DWtype __avr32_lsr64(DWtype u, word_type b)
11 */
12 .text
13 .global __avr32_lsr64
14 .type __avr32_lsr64,@function
15__avr32_lsr64:
16 cp.w r12, 0
17 reteq r12
18
19 rsub r9, r12, 32
20 brle 1f
21
22 lsl r8, r11, r9
23 lsr r11, r11, r12
24 lsr r10, r10, r12
25 or r10, r8
26 retal r12
27
281: neg r9
29 lsr r10, r11, r9
30 mov r11, 0
31 retal r12
diff --git a/arch/avr32/lib/clear_user.S b/arch/avr32/lib/clear_user.S
new file mode 100644
index 000000000000..d8991b6f8eb7
--- /dev/null
+++ b/arch/avr32/lib/clear_user.S
@@ -0,0 +1,76 @@
1/*
2 * Copyright 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#include <asm/page.h>
9#include <asm/thread_info.h>
10#include <asm/asm.h>
11
12 .text
13 .align 1
14 .global clear_user
15 .type clear_user, "function"
16clear_user:
17 branch_if_kernel r8, __clear_user
18 ret_if_privileged r8, r12, r11, r11
19
20 .global __clear_user
21 .type __clear_user, "function"
22__clear_user:
23 mov r9, r12
24 mov r8, 0
25 andl r9, 3, COH
26 brne 5f
27
281: sub r11, 4
29 brlt 2f
30
3110: st.w r12++, r8
32 sub r11, 4
33 brge 10b
34
352: sub r11, -4
36 reteq 0
37
38 /* Unaligned count or address */
39 bld r11, 1
40 brcc 12f
4111: st.h r12++, r8
42 sub r11, 2
43 reteq 0
4412: st.b r12++, r8
45 retal 0
46
47 /* Unaligned address */
485: cp.w r11, 4
49 brlt 2b
50
51 lsl r9, 2
52 add pc, pc, r9
5313: st.b r12++, r8
54 sub r11, 1
5514: st.b r12++, r8
56 sub r11, 1
5715: st.b r12++, r8
58 sub r11, 1
59 rjmp 1b
60
61 .size clear_user, . - clear_user
62 .size __clear_user, . - __clear_user
63
64 .section .fixup, "ax"
65 .align 1
6618: sub r11, -4
6719: retal r11
68
69 .section __ex_table, "a"
70 .align 2
71 .long 10b, 18b
72 .long 11b, 19b
73 .long 12b, 19b
74 .long 13b, 19b
75 .long 14b, 19b
76 .long 15b, 19b
diff --git a/arch/avr32/lib/copy_user.S b/arch/avr32/lib/copy_user.S
new file mode 100644
index 000000000000..ea59c04b07de
--- /dev/null
+++ b/arch/avr32/lib/copy_user.S
@@ -0,0 +1,119 @@
1/*
2 * Copy to/from userspace with optional address space checking.
3 *
4 * Copyright 2004-2006 Atmel Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#include <asm/page.h>
11#include <asm/thread_info.h>
12#include <asm/asm.h>
13
14 /*
15 * __kernel_size_t
16 * __copy_user(void *to, const void *from, __kernel_size_t n)
17 *
18 * Returns the number of bytes not copied. Might be off by
19 * max 3 bytes if we get a fault in the main loop.
20 *
21 * The address-space checking functions simply fall through to
22 * the non-checking version.
23 */
24 .text
25 .align 1
26 .global copy_from_user
27 .type copy_from_user, @function
28copy_from_user:
29 branch_if_kernel r8, __copy_user
30 ret_if_privileged r8, r11, r10, r10
31 rjmp __copy_user
32 .size copy_from_user, . - copy_from_user
33
34 .global copy_to_user
35 .type copy_to_user, @function
36copy_to_user:
37 branch_if_kernel r8, __copy_user
38 ret_if_privileged r8, r12, r10, r10
39 .size copy_to_user, . - copy_to_user
40
41 .global __copy_user
42 .type __copy_user, @function
43__copy_user:
44 mov r9, r11
45 andl r9, 3, COH
46 brne 6f
47
48 /* At this point, from is word-aligned */
491: sub r10, 4
50 brlt 3f
51
522:
5310: ld.w r8, r11++
5411: st.w r12++, r8
55 sub r10, 4
56 brge 2b
57
583: sub r10, -4
59 reteq 0
60
61 /*
62 * Handle unaligned count. Need to be careful with r10 here so
63 * that we return the correct value even if we get a fault
64 */
654:
6620: ld.ub r8, r11++
6721: st.b r12++, r8
68 sub r10, 1
69 reteq 0
7022: ld.ub r8, r11++
7123: st.b r12++, r8
72 sub r10, 1
73 reteq 0
7424: ld.ub r8, r11++
7525: st.b r12++, r8
76 retal 0
77
78 /* Handle unaligned from-pointer */
796: cp.w r10, 4
80 brlt 4b
81 rsub r9, r9, 4
82
8330: ld.ub r8, r11++
8431: st.b r12++, r8
85 sub r10, 1
86 sub r9, 1
87 breq 1b
8832: ld.ub r8, r11++
8933: st.b r12++, r8
90 sub r10, 1
91 sub r9, 1
92 breq 1b
9334: ld.ub r8, r11++
9435: st.b r12++, r8
95 sub r10, 1
96 rjmp 1b
97 .size __copy_user, . - __copy_user
98
99 .section .fixup,"ax"
100 .align 1
10119: sub r10, -4
10229: retal r10
103
104 .section __ex_table,"a"
105 .align 2
106 .long 10b, 19b
107 .long 11b, 19b
108 .long 20b, 29b
109 .long 21b, 29b
110 .long 22b, 29b
111 .long 23b, 29b
112 .long 24b, 29b
113 .long 25b, 29b
114 .long 30b, 29b
115 .long 31b, 29b
116 .long 32b, 29b
117 .long 33b, 29b
118 .long 34b, 29b
119 .long 35b, 29b
diff --git a/arch/avr32/lib/csum_partial.S b/arch/avr32/lib/csum_partial.S
new file mode 100644
index 000000000000..6a262b528eb7
--- /dev/null
+++ b/arch/avr32/lib/csum_partial.S
@@ -0,0 +1,47 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 /*
10 * unsigned int csum_partial(const unsigned char *buff,
11 * int len, unsigned int sum)
12 */
13 .text
14 .global csum_partial
15 .type csum_partial,"function"
16 .align 1
17csum_partial:
18 /* checksum complete words, aligned or not */
193: sub r11, 4
20 brlt 5f
214: ld.w r9, r12++
22 add r10, r9
23 acr r10
24 sub r11, 4
25 brge 4b
26
27 /* return if we had a whole number of words */
285: sub r11, -4
29 reteq r10
30
31 /* checksum any remaining bytes at the end */
32 mov r9, 0
33 mov r8, 0
34 cp r11, 2
35 brlt 6f
36 ld.uh r9, r12++
37 sub r11, 2
38 breq 7f
39 lsl r9, 16
406: ld.ub r8, r12++
41 lsl r8, 8
427: or r9, r8
43 add r10, r9
44 acr r10
45
46 retal r10
47 .size csum_partial, . - csum_partial
diff --git a/arch/avr32/lib/csum_partial_copy_generic.S b/arch/avr32/lib/csum_partial_copy_generic.S
new file mode 100644
index 000000000000..a3a0f9b8929c
--- /dev/null
+++ b/arch/avr32/lib/csum_partial_copy_generic.S
@@ -0,0 +1,99 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#include <asm/errno.h>
9#include <asm/asm.h>
10
11 /*
12 * unsigned int csum_partial_copy_generic(const char *src, char *dst, int len
13 * int sum, int *src_err_ptr,
14 * int *dst_err_ptr)
15 *
16 * Copy src to dst while checksumming, otherwise like csum_partial.
17 */
18
19 .macro ld_src size, reg, ptr
209999: ld.\size \reg, \ptr
21 .section __ex_table, "a"
22 .long 9999b, fixup_ld_src
23 .previous
24 .endm
25
26 .macro st_dst size, ptr, reg
279999: st.\size \ptr, \reg
28 .section __ex_table, "a"
29 .long 9999b, fixup_st_dst
30 .previous
31 .endm
32
33 .text
34 .global csum_partial_copy_generic
35 .type csum_partial_copy_generic,"function"
36 .align 1
37csum_partial_copy_generic:
38 pushm r4-r7,lr
39
40 /* The inner loop */
411: sub r10, 4
42 brlt 5f
432: ld_src w, r5, r12++
44 st_dst w, r11++, r5
45 add r9, r5
46 acr r9
47 sub r10, 4
48 brge 2b
49
50 /* return if we had a whole number of words */
515: sub r10, -4
52 brne 7f
53
546: mov r12, r9
55 popm r4-r7,pc
56
57 /* handle additional bytes at the tail */
587: mov r5, 0
59 mov r4, 32
608: ld_src ub, r6, r12++
61 st_dst b, r11++, r6
62 lsl r5, 8
63 sub r4, 8
64 bfins r5, r6, 0, 8
65 sub r10, 1
66 brne 8b
67
68 lsl r5, r5, r4
69 add r9, r5
70 acr r9
71 rjmp 6b
72
73 /* Exception handler */
74 .section .fixup,"ax"
75 .align 1
76fixup_ld_src:
77 mov r9, -EFAULT
78 cp.w r8, 0
79 breq 1f
80 st.w r8[0], r9
81
821: /*
83 * TODO: zero the complete destination - computing the rest
84 * is too much work
85 */
86
87 mov r9, 0
88 rjmp 6b
89
90fixup_st_dst:
91 mov r9, -EFAULT
92 lddsp r8, sp[20]
93 cp.w r8, 0
94 breq 1f
95 st.w r8[0], r9
961: mov r9, 0
97 rjmp 6b
98
99 .previous
diff --git a/arch/avr32/lib/delay.c b/arch/avr32/lib/delay.c
new file mode 100644
index 000000000000..462c8307b680
--- /dev/null
+++ b/arch/avr32/lib/delay.c
@@ -0,0 +1,55 @@
1/*
2 * Precise Delay Loops for avr32
3 *
4 * Copyright (C) 1993 Linus Torvalds
5 * Copyright (C) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
6 * Copyright (C) 2005-2006 Atmel Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/delay.h>
14#include <linux/module.h>
15#include <linux/types.h>
16
17#include <asm/delay.h>
18#include <asm/processor.h>
19#include <asm/sysreg.h>
20
21int read_current_timer(unsigned long *timer_value)
22{
23 *timer_value = sysreg_read(COUNT);
24 return 0;
25}
26
27void __delay(unsigned long loops)
28{
29 unsigned bclock, now;
30
31 bclock = sysreg_read(COUNT);
32 do {
33 now = sysreg_read(COUNT);
34 } while ((now - bclock) < loops);
35}
36
37inline void __const_udelay(unsigned long xloops)
38{
39 unsigned long long loops;
40
41 asm("mulu.d %0, %1, %2"
42 : "=r"(loops)
43 : "r"(current_cpu_data.loops_per_jiffy * HZ), "r"(xloops));
44 __delay(loops >> 32);
45}
46
47void __udelay(unsigned long usecs)
48{
49 __const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */
50}
51
52void __ndelay(unsigned long nsecs)
53{
54 __const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
55}
diff --git a/arch/avr32/lib/findbit.S b/arch/avr32/lib/findbit.S
new file mode 100644
index 000000000000..2b4856f4bf7c
--- /dev/null
+++ b/arch/avr32/lib/findbit.S
@@ -0,0 +1,154 @@
1/*
2 * Copyright (C) 2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#include <linux/linkage.h>
9
10 .text
11 /*
12 * unsigned long find_first_zero_bit(const unsigned long *addr,
13 * unsigned long size)
14 */
15ENTRY(find_first_zero_bit)
16 cp.w r11, 0
17 reteq r11
18 mov r9, r11
191: ld.w r8, r12[0]
20 com r8
21 brne .L_found
22 sub r12, -4
23 sub r9, 32
24 brgt 1b
25 retal r11
26
27 /*
28 * unsigned long find_next_zero_bit(const unsigned long *addr,
29 * unsigned long size,
30 * unsigned long offset)
31 */
32ENTRY(find_next_zero_bit)
33 lsr r8, r10, 5
34 sub r9, r11, r10
35 retle r11
36
37 lsl r8, 2
38 add r12, r8
39 andl r10, 31, COH
40 breq 1f
41
42 /* offset is not word-aligned. Handle the first (32 - r10) bits */
43 ld.w r8, r12[0]
44 com r8
45 sub r12, -4
46 lsr r8, r8, r10
47 brne .L_found
48
49 /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */
50 add r9, r10
51 sub r9, 32
52 retle r11
53
54 /* Main loop. offset must be word-aligned */
551: ld.w r8, r12[0]
56 com r8
57 brne .L_found
58 sub r12, -4
59 sub r9, 32
60 brgt 1b
61 retal r11
62
63 /* Common return path for when a bit is actually found. */
64.L_found:
65 brev r8
66 clz r10, r8
67 rsub r9, r11
68 add r10, r9
69
70 /* XXX: If we don't have to return exactly "size" when the bit
71 is not found, we may drop this "min" thing */
72 min r12, r11, r10
73 retal r12
74
75 /*
76 * unsigned long find_first_bit(const unsigned long *addr,
77 * unsigned long size)
78 */
79ENTRY(find_first_bit)
80 cp.w r11, 0
81 reteq r11
82 mov r9, r11
831: ld.w r8, r12[0]
84 cp.w r8, 0
85 brne .L_found
86 sub r12, -4
87 sub r9, 32
88 brgt 1b
89 retal r11
90
91 /*
92 * unsigned long find_next_bit(const unsigned long *addr,
93 * unsigned long size,
94 * unsigned long offset)
95 */
96ENTRY(find_next_bit)
97 lsr r8, r10, 5
98 sub r9, r11, r10
99 retle r11
100
101 lsl r8, 2
102 add r12, r8
103 andl r10, 31, COH
104 breq 1f
105
106 /* offset is not word-aligned. Handle the first (32 - r10) bits */
107 ld.w r8, r12[0]
108 sub r12, -4
109 lsr r8, r8, r10
110 brne .L_found
111
112 /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */
113 add r9, r10
114 sub r9, 32
115 retle r11
116
117 /* Main loop. offset must be word-aligned */
1181: ld.w r8, r12[0]
119 cp.w r8, 0
120 brne .L_found
121 sub r12, -4
122 sub r9, 32
123 brgt 1b
124 retal r11
125
126ENTRY(generic_find_next_zero_le_bit)
127 lsr r8, r10, 5
128 sub r9, r11, r10
129 retle r11
130
131 lsl r8, 2
132 add r12, r8
133 andl r10, 31, COH
134 breq 1f
135
136 /* offset is not word-aligned. Handle the first (32 - r10) bits */
137 ldswp.w r8, r12[0]
138 sub r12, -4
139 lsr r8, r8, r10
140 brne .L_found
141
142 /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */
143 add r9, r10
144 sub r9, 32
145 retle r11
146
147 /* Main loop. offset must be word-aligned */
1481: ldswp.w r8, r12[0]
149 cp.w r8, 0
150 brne .L_found
151 sub r12, -4
152 sub r9, 32
153 brgt 1b
154 retal r11
diff --git a/arch/avr32/lib/io-readsl.S b/arch/avr32/lib/io-readsl.S
new file mode 100644
index 000000000000..b103511ed6c4
--- /dev/null
+++ b/arch/avr32/lib/io-readsl.S
@@ -0,0 +1,24 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 .global __raw_readsl
10 .type __raw_readsl,@function
11__raw_readsl:
12 cp.w r10, 0
13 reteq r12
14
15 /*
16 * If r11 isn't properly aligned, we might get an exception on
17 * some implementations. But there's not much we can do about it.
18 */
191: ld.w r8, r12[0]
20 sub r10, 1
21 st.w r11++, r8
22 brne 1b
23
24 retal r12
diff --git a/arch/avr32/lib/io-readsw.S b/arch/avr32/lib/io-readsw.S
new file mode 100644
index 000000000000..456be9909027
--- /dev/null
+++ b/arch/avr32/lib/io-readsw.S
@@ -0,0 +1,43 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9.Lnot_word_aligned:
10 /*
11 * Bad alignment will cause a hardware exception, which is as
12 * good as anything. No need for us to check for proper alignment.
13 */
14 ld.uh r8, r12[0]
15 sub r10, 1
16 st.h r11++, r8
17
18 /* fall through */
19
20 .global __raw_readsw
21 .type __raw_readsw,@function
22__raw_readsw:
23 cp.w r10, 0
24 reteq r12
25 mov r9, 3
26 tst r11, r9
27 brne .Lnot_word_aligned
28
29 sub r10, 2
30 brlt 2f
31
321: ldins.h r8:t, r12[0]
33 ldins.h r8:b, r12[0]
34 st.w r11++, r8
35 sub r10, 2
36 brge 1b
37
382: sub r10, -2
39 reteq r12
40
41 ld.uh r8, r12[0]
42 st.h r11++, r8
43 retal r12
diff --git a/arch/avr32/lib/io-writesl.S b/arch/avr32/lib/io-writesl.S
new file mode 100644
index 000000000000..22138b3a16e5
--- /dev/null
+++ b/arch/avr32/lib/io-writesl.S
@@ -0,0 +1,20 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 .global __raw_writesl
10 .type __raw_writesl,@function
11__raw_writesl:
12 cp.w r10, 0
13 reteq r12
14
151: ld.w r8, r11++
16 sub r10, 1
17 st.w r12[0], r8
18 brne 1b
19
20 retal r12
diff --git a/arch/avr32/lib/io-writesw.S b/arch/avr32/lib/io-writesw.S
new file mode 100644
index 000000000000..8c4a53f1c52a
--- /dev/null
+++ b/arch/avr32/lib/io-writesw.S
@@ -0,0 +1,38 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9.Lnot_word_aligned:
10 ld.uh r8, r11++
11 sub r10, 1
12 st.h r12[0], r8
13
14 .global __raw_writesw
15 .type __raw_writesw,@function
16__raw_writesw:
17 cp.w r10, 0
18 mov r9, 3
19 reteq r12
20 tst r11, r9
21 brne .Lnot_word_aligned
22
23 sub r10, 2
24 brlt 2f
25
261: ld.w r8, r11++
27 bfextu r9, r8, 16, 16
28 st.h r12[0], r9
29 st.h r12[0], r8
30 sub r10, 2
31 brge 1b
32
332: sub r10, -2
34 reteq r12
35
36 ld.uh r8, r11++
37 st.h r12[0], r8
38 retal r12
diff --git a/arch/avr32/lib/libgcc.h b/arch/avr32/lib/libgcc.h
new file mode 100644
index 000000000000..5a091b5e3618
--- /dev/null
+++ b/arch/avr32/lib/libgcc.h
@@ -0,0 +1,33 @@
1/* Definitions for various functions 'borrowed' from gcc-3.4.3 */
2
3#define BITS_PER_UNIT 8
4
5typedef int QItype __attribute__ ((mode (QI)));
6typedef unsigned int UQItype __attribute__ ((mode (QI)));
7typedef int HItype __attribute__ ((mode (HI)));
8typedef unsigned int UHItype __attribute__ ((mode (HI)));
9typedef int SItype __attribute__ ((mode (SI)));
10typedef unsigned int USItype __attribute__ ((mode (SI)));
11typedef int DItype __attribute__ ((mode (DI)));
12typedef unsigned int UDItype __attribute__ ((mode (DI)));
13typedef float SFtype __attribute__ ((mode (SF)));
14typedef float DFtype __attribute__ ((mode (DF)));
15typedef int word_type __attribute__ ((mode (__word__)));
16
17#define W_TYPE_SIZE (4 * BITS_PER_UNIT)
18#define Wtype SItype
19#define UWtype USItype
20#define HWtype SItype
21#define UHWtype USItype
22#define DWtype DItype
23#define UDWtype UDItype
24#define __NW(a,b) __ ## a ## si ## b
25#define __NDW(a,b) __ ## a ## di ## b
26
27struct DWstruct {Wtype high, low;};
28
29typedef union
30{
31 struct DWstruct s;
32 DWtype ll;
33} DWunion;
diff --git a/arch/avr32/lib/longlong.h b/arch/avr32/lib/longlong.h
new file mode 100644
index 000000000000..cd5e369ac437
--- /dev/null
+++ b/arch/avr32/lib/longlong.h
@@ -0,0 +1,98 @@
1/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
2 Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000
3 Free Software Foundation, Inc.
4
5 This definition file is free software; you can redistribute it
6 and/or modify it under the terms of the GNU General Public
7 License as published by the Free Software Foundation; either
8 version 2, or (at your option) any later version.
9
10 This definition file is distributed in the hope that it will be
11 useful, but WITHOUT ANY WARRANTY; without even the implied
12 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
19
20/* Borrowed from gcc-3.4.3 */
21
22#define __BITS4 (W_TYPE_SIZE / 4)
23#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
24#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
25#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
26
27#define count_leading_zeros(count, x) ((count) = __builtin_clz(x))
28
29#define __udiv_qrnnd_c(q, r, n1, n0, d) \
30 do { \
31 UWtype __d1, __d0, __q1, __q0; \
32 UWtype __r1, __r0, __m; \
33 __d1 = __ll_highpart (d); \
34 __d0 = __ll_lowpart (d); \
35 \
36 __r1 = (n1) % __d1; \
37 __q1 = (n1) / __d1; \
38 __m = (UWtype) __q1 * __d0; \
39 __r1 = __r1 * __ll_B | __ll_highpart (n0); \
40 if (__r1 < __m) \
41 { \
42 __q1--, __r1 += (d); \
43 if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
44 if (__r1 < __m) \
45 __q1--, __r1 += (d); \
46 } \
47 __r1 -= __m; \
48 \
49 __r0 = __r1 % __d1; \
50 __q0 = __r1 / __d1; \
51 __m = (UWtype) __q0 * __d0; \
52 __r0 = __r0 * __ll_B | __ll_lowpart (n0); \
53 if (__r0 < __m) \
54 { \
55 __q0--, __r0 += (d); \
56 if (__r0 >= (d)) \
57 if (__r0 < __m) \
58 __q0--, __r0 += (d); \
59 } \
60 __r0 -= __m; \
61 \
62 (q) = (UWtype) __q1 * __ll_B | __q0; \
63 (r) = __r0; \
64 } while (0)
65
66#define udiv_qrnnd __udiv_qrnnd_c
67
68#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
69 do { \
70 UWtype __x; \
71 __x = (al) - (bl); \
72 (sh) = (ah) - (bh) - (__x > (al)); \
73 (sl) = __x; \
74 } while (0)
75
76#define umul_ppmm(w1, w0, u, v) \
77 do { \
78 UWtype __x0, __x1, __x2, __x3; \
79 UHWtype __ul, __vl, __uh, __vh; \
80 \
81 __ul = __ll_lowpart (u); \
82 __uh = __ll_highpart (u); \
83 __vl = __ll_lowpart (v); \
84 __vh = __ll_highpart (v); \
85 \
86 __x0 = (UWtype) __ul * __vl; \
87 __x1 = (UWtype) __ul * __vh; \
88 __x2 = (UWtype) __uh * __vl; \
89 __x3 = (UWtype) __uh * __vh; \
90 \
91 __x1 += __ll_highpart (__x0);/* this can't give carry */ \
92 __x1 += __x2; /* but this indeed can */ \
93 if (__x1 < __x2) /* did we get it? */ \
94 __x3 += __ll_B; /* yes, add it in the proper pos. */ \
95 \
96 (w1) = __x3 + __ll_highpart (__x1); \
97 (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \
98 } while (0)
diff --git a/arch/avr32/lib/memcpy.S b/arch/avr32/lib/memcpy.S
new file mode 100644
index 000000000000..0abb26142b64
--- /dev/null
+++ b/arch/avr32/lib/memcpy.S
@@ -0,0 +1,62 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 /*
10 * void *memcpy(void *to, const void *from, unsigned long n)
11 *
12 * This implementation does word-aligned loads in the main loop,
13 * possibly sacrificing alignment of stores.
14 *
15 * Hopefully, in most cases, both "to" and "from" will be
16 * word-aligned to begin with.
17 */
18 .text
19 .global memcpy
20 .type memcpy, @function
21memcpy:
22 mov r9, r11
23 andl r9, 3, COH
24 brne 1f
25
26 /* At this point, "from" is word-aligned */
272: sub r10, 4
28 mov r9, r12
29 brlt 4f
30
313: ld.w r8, r11++
32 sub r10, 4
33 st.w r12++, r8
34 brge 3b
35
364: neg r10
37 reteq r9
38
39 /* Handle unaligned count */
40 lsl r10, 2
41 add pc, pc, r10
42 ld.ub r8, r11++
43 st.b r12++, r8
44 ld.ub r8, r11++
45 st.b r12++, r8
46 ld.ub r8, r11++
47 st.b r12++, r8
48 retal r9
49
50 /* Handle unaligned "from" pointer */
511: sub r10, 4
52 brlt 4b
53 add r10, r9
54 lsl r9, 2
55 add pc, pc, r9
56 ld.ub r8, r11++
57 st.b r12++, r8
58 ld.ub r8, r11++
59 st.b r12++, r8
60 ld.ub r8, r11++
61 st.b r12++, r8
62 rjmp 2b
diff --git a/arch/avr32/lib/memset.S b/arch/avr32/lib/memset.S
new file mode 100644
index 000000000000..40da32c0480c
--- /dev/null
+++ b/arch/avr32/lib/memset.S
@@ -0,0 +1,72 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * Based on linux/arch/arm/lib/memset.S
5 * Copyright (C) 1995-2000 Russell King
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * ASM optimised string functions
12 */
13#include <asm/asm.h>
14
15 /*
16 * r12: void *b
17 * r11: int c
18 * r10: size_t len
19 *
20 * Returns b in r12
21 */
22 .text
23 .global memset
24 .type memset, @function
25 .align 5
26memset:
27 mov r9, r12
28 mov r8, r12
29 or r11, r11, r11 << 8
30 andl r9, 3, COH
31 brne 1f
32
332: or r11, r11, r11 << 16
34 sub r10, 4
35 brlt 5f
36
37 /* Let's do some real work */
384: st.w r8++, r11
39 sub r10, 4
40 brge 4b
41
42 /*
43 * When we get here, we've got less than 4 bytes to set. r10
44 * might be negative.
45 */
465: sub r10, -4
47 reteq r12
48
49 /* Fastpath ends here, exactly 32 bytes from memset */
50
51 /* Handle unaligned count or pointer */
52 bld r10, 1
53 brcc 6f
54 st.b r8++, r11
55 st.b r8++, r11
56 bld r10, 0
57 retcc r12
586: st.b r8++, r11
59 retal r12
60
61 /* Handle unaligned pointer */
621: sub r10, 4
63 brlt 5b
64 add r10, r9
65 lsl r9, 1
66 add pc, r9
67 st.b r8++, r11
68 st.b r8++, r11
69 st.b r8++, r11
70 rjmp 2b
71
72 .size memset, . - memset
diff --git a/arch/avr32/lib/strncpy_from_user.S b/arch/avr32/lib/strncpy_from_user.S
new file mode 100644
index 000000000000..72bd50599ec6
--- /dev/null
+++ b/arch/avr32/lib/strncpy_from_user.S
@@ -0,0 +1,60 @@
1/*
2 * Copy to/from userspace with optional address space checking.
3 *
4 * Copyright 2004-2006 Atmel Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#include <linux/errno.h>
11
12#include <asm/page.h>
13#include <asm/thread_info.h>
14#include <asm/asm.h>
15
16 /*
17 * long strncpy_from_user(char *dst, const char *src, long count)
18 *
19 * On success, returns the length of the string, not including
20 * the terminating NUL.
21 *
22 * If the string is longer than count, returns count
23 *
24 * If userspace access fails, returns -EFAULT
25 */
26 .text
27 .align 1
28 .global strncpy_from_user
29 .type strncpy_from_user, "function"
30strncpy_from_user:
31 mov r9, -EFAULT
32 branch_if_kernel r8, __strncpy_from_user
33 ret_if_privileged r8, r11, r10, r9
34
35 .global __strncpy_from_user
36 .type __strncpy_from_user, "function"
37__strncpy_from_user:
38 cp.w r10, 0
39 reteq 0
40
41 mov r9, r10
42
431: ld.ub r8, r11++
44 st.b r12++, r8
45 cp.w r8, 0
46 breq 2f
47 sub r9, 1
48 brne 1b
49
502: sub r10, r9
51 retal r10
52
53 .section .fixup, "ax"
54 .align 1
553: mov r12, -EFAULT
56 retal r12
57
58 .section __ex_table, "a"
59 .align 2
60 .long 1b, 3b
diff --git a/arch/avr32/lib/strnlen_user.S b/arch/avr32/lib/strnlen_user.S
new file mode 100644
index 000000000000..65ce11afa66a
--- /dev/null
+++ b/arch/avr32/lib/strnlen_user.S
@@ -0,0 +1,67 @@
1/*
2 * Copy to/from userspace with optional address space checking.
3 *
4 * Copyright 2004-2006 Atmel Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#include <asm/page.h>
11#include <asm/thread_info.h>
12#include <asm/processor.h>
13#include <asm/asm.h>
14
15 .text
16 .align 1
17 .global strnlen_user
18 .type strnlen_user, "function"
19strnlen_user:
20 branch_if_kernel r8, __strnlen_user
21 sub r8, r11, 1
22 add r8, r12
23 retcs 0
24 brmi adjust_length /* do a closer inspection */
25
26 .global __strnlen_user
27 .type __strnlen_user, "function"
28__strnlen_user:
29 mov r10, r12
30
3110: ld.ub r8, r12++
32 cp.w r8, 0
33 breq 2f
34 sub r11, 1
35 brne 10b
36
37 sub r12, -1
382: sub r12, r10
39 retal r12
40
41
42 .type adjust_length, "function"
43adjust_length:
44 cp.w r12, 0 /* addr must always be < TASK_SIZE */
45 retmi 0
46
47 pushm lr
48 lddpc lr, _task_size
49 sub r11, lr, r12
50 mov r9, r11
51 rcall __strnlen_user
52 cp.w r12, r9
53 brgt 1f
54 popm pc
551: popm pc, r12=0
56
57 .align 2
58_task_size:
59 .long TASK_SIZE
60
61 .section .fixup, "ax"
62 .align 1
6319: retal 0
64
65 .section __ex_table, "a"
66 .align 2
67 .long 10b, 19b
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-10 16:38:53 -0500