aboutsummaryrefslogtreecommitdiffstats
path: root/arch/sparc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/Kconfig3
-rw-r--r--arch/sparc/crypto/Makefile16
-rw-r--r--arch/sparc/crypto/aes_glue.c2
-rw-r--r--arch/sparc/crypto/camellia_glue.c2
-rw-r--r--arch/sparc/crypto/crc32c_glue.c2
-rw-r--r--arch/sparc/crypto/des_glue.c2
-rw-r--r--arch/sparc/crypto/md5_glue.c2
-rw-r--r--arch/sparc/crypto/sha1_glue.c2
-rw-r--r--arch/sparc/crypto/sha256_glue.c2
-rw-r--r--arch/sparc/crypto/sha512_glue.c2
-rw-r--r--arch/sparc/include/asm/atomic_64.h4
-rw-r--r--arch/sparc/include/asm/backoff.h69
-rw-r--r--arch/sparc/include/asm/compat.h5
-rw-r--r--arch/sparc/include/asm/processor_32.h1
-rw-r--r--arch/sparc/include/asm/processor_64.h28
-rw-r--r--arch/sparc/include/asm/prom.h5
-rw-r--r--arch/sparc/include/asm/ptrace.h10
-rw-r--r--arch/sparc/include/asm/switch_to_64.h2
-rw-r--r--arch/sparc/include/asm/syscalls.h2
-rw-r--r--arch/sparc/include/asm/thread_info_64.h30
-rw-r--r--arch/sparc/include/asm/ttable.h24
-rw-r--r--arch/sparc/include/asm/uaccess_64.h4
-rw-r--r--arch/sparc/include/asm/unistd.h1
-rw-r--r--arch/sparc/include/uapi/asm/unistd.h7
-rw-r--r--arch/sparc/kernel/entry.S51
-rw-r--r--arch/sparc/kernel/entry.h7
-rw-r--r--arch/sparc/kernel/etrap_64.S8
-rw-r--r--arch/sparc/kernel/leon_kernel.c6
-rw-r--r--arch/sparc/kernel/perf_event.c22
-rw-r--r--arch/sparc/kernel/process_32.c152
-rw-r--r--arch/sparc/kernel/process_64.c185
-rw-r--r--arch/sparc/kernel/ptrace_64.c4
-rw-r--r--arch/sparc/kernel/setup_64.c21
-rw-r--r--arch/sparc/kernel/sys_sparc32.c36
-rw-r--r--arch/sparc/kernel/sys_sparc_32.c24
-rw-r--r--arch/sparc/kernel/sys_sparc_64.c21
-rw-r--r--arch/sparc/kernel/syscalls.S30
-rw-r--r--arch/sparc/kernel/systbls_32.S1
-rw-r--r--arch/sparc/kernel/systbls_64.S4
-rw-r--r--arch/sparc/kernel/traps_64.c4
-rw-r--r--arch/sparc/kernel/unaligned_64.c36
-rw-r--r--arch/sparc/kernel/visemul.c23
-rw-r--r--arch/sparc/kernel/vmlinux.lds.S5
-rw-r--r--arch/sparc/kernel/winfixup.S2
-rw-r--r--arch/sparc/lib/atomic_64.S16
-rw-r--r--arch/sparc/lib/ksyms.c1
-rw-r--r--arch/sparc/math-emu/math_64.c2
-rw-r--r--arch/sparc/mm/init_64.c2
48 files changed, 433 insertions, 457 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index b6b442b0d793..0c7d365fa402 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -20,6 +20,7 @@ config SPARC
20 select HAVE_ARCH_TRACEHOOK 20 select HAVE_ARCH_TRACEHOOK
21 select SYSCTL_EXCEPTION_TRACE 21 select SYSCTL_EXCEPTION_TRACE
22 select ARCH_WANT_OPTIONAL_GPIOLIB 22 select ARCH_WANT_OPTIONAL_GPIOLIB
23 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
23 select RTC_CLASS 24 select RTC_CLASS
24 select RTC_DRV_M48T59 25 select RTC_DRV_M48T59
25 select HAVE_IRQ_WORK 26 select HAVE_IRQ_WORK
@@ -40,6 +41,8 @@ config SPARC
40 select GENERIC_STRNCPY_FROM_USER 41 select GENERIC_STRNCPY_FROM_USER
41 select GENERIC_STRNLEN_USER 42 select GENERIC_STRNLEN_USER
42 select MODULES_USE_ELF_RELA 43 select MODULES_USE_ELF_RELA
44 select GENERIC_KERNEL_THREAD
45 select GENERIC_KERNEL_EXECVE
43 46
44config SPARC32 47config SPARC32
45 def_bool !64BIT 48 def_bool !64BIT
diff --git a/arch/sparc/crypto/Makefile b/arch/sparc/crypto/Makefile
index 6ae1ad5e502b..5d469d81761f 100644
--- a/arch/sparc/crypto/Makefile
+++ b/arch/sparc/crypto/Makefile
@@ -13,13 +13,13 @@ obj-$(CONFIG_CRYPTO_DES_SPARC64) += camellia-sparc64.o
13 13
14obj-$(CONFIG_CRYPTO_CRC32C_SPARC64) += crc32c-sparc64.o 14obj-$(CONFIG_CRYPTO_CRC32C_SPARC64) += crc32c-sparc64.o
15 15
16sha1-sparc64-y := sha1_asm.o sha1_glue.o crop_devid.o 16sha1-sparc64-y := sha1_asm.o sha1_glue.o
17sha256-sparc64-y := sha256_asm.o sha256_glue.o crop_devid.o 17sha256-sparc64-y := sha256_asm.o sha256_glue.o
18sha512-sparc64-y := sha512_asm.o sha512_glue.o crop_devid.o 18sha512-sparc64-y := sha512_asm.o sha512_glue.o
19md5-sparc64-y := md5_asm.o md5_glue.o crop_devid.o 19md5-sparc64-y := md5_asm.o md5_glue.o
20 20
21aes-sparc64-y := aes_asm.o aes_glue.o crop_devid.o 21aes-sparc64-y := aes_asm.o aes_glue.o
22des-sparc64-y := des_asm.o des_glue.o crop_devid.o 22des-sparc64-y := des_asm.o des_glue.o
23camellia-sparc64-y := camellia_asm.o camellia_glue.o crop_devid.o 23camellia-sparc64-y := camellia_asm.o camellia_glue.o
24 24
25crc32c-sparc64-y := crc32c_asm.o crc32c_glue.o crop_devid.o 25crc32c-sparc64-y := crc32c_asm.o crc32c_glue.o
diff --git a/arch/sparc/crypto/aes_glue.c b/arch/sparc/crypto/aes_glue.c
index 8f1c9980f637..3965d1d36dfa 100644
--- a/arch/sparc/crypto/aes_glue.c
+++ b/arch/sparc/crypto/aes_glue.c
@@ -475,3 +475,5 @@ MODULE_LICENSE("GPL");
475MODULE_DESCRIPTION("AES Secure Hash Algorithm, sparc64 aes opcode accelerated"); 475MODULE_DESCRIPTION("AES Secure Hash Algorithm, sparc64 aes opcode accelerated");
476 476
477MODULE_ALIAS("aes"); 477MODULE_ALIAS("aes");
478
479#include "crop_devid.c"
diff --git a/arch/sparc/crypto/camellia_glue.c b/arch/sparc/crypto/camellia_glue.c
index 42905c084299..62c89af3fd3f 100644
--- a/arch/sparc/crypto/camellia_glue.c
+++ b/arch/sparc/crypto/camellia_glue.c
@@ -320,3 +320,5 @@ MODULE_LICENSE("GPL");
320MODULE_DESCRIPTION("Camellia Cipher Algorithm, sparc64 camellia opcode accelerated"); 320MODULE_DESCRIPTION("Camellia Cipher Algorithm, sparc64 camellia opcode accelerated");
321 321
322MODULE_ALIAS("aes"); 322MODULE_ALIAS("aes");
323
324#include "crop_devid.c"
diff --git a/arch/sparc/crypto/crc32c_glue.c b/arch/sparc/crypto/crc32c_glue.c
index 0bd89cea8d8e..5162fad912ce 100644
--- a/arch/sparc/crypto/crc32c_glue.c
+++ b/arch/sparc/crypto/crc32c_glue.c
@@ -177,3 +177,5 @@ MODULE_LICENSE("GPL");
177MODULE_DESCRIPTION("CRC32c (Castagnoli), sparc64 crc32c opcode accelerated"); 177MODULE_DESCRIPTION("CRC32c (Castagnoli), sparc64 crc32c opcode accelerated");
178 178
179MODULE_ALIAS("crc32c"); 179MODULE_ALIAS("crc32c");
180
181#include "crop_devid.c"
diff --git a/arch/sparc/crypto/des_glue.c b/arch/sparc/crypto/des_glue.c
index c4940c2d3073..41524cebcc49 100644
--- a/arch/sparc/crypto/des_glue.c
+++ b/arch/sparc/crypto/des_glue.c
@@ -527,3 +527,5 @@ MODULE_LICENSE("GPL");
527MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms, sparc64 des opcode accelerated"); 527MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms, sparc64 des opcode accelerated");
528 528
529MODULE_ALIAS("des"); 529MODULE_ALIAS("des");
530
531#include "crop_devid.c"
diff --git a/arch/sparc/crypto/md5_glue.c b/arch/sparc/crypto/md5_glue.c
index 603d723038ce..09a9ea1dfb69 100644
--- a/arch/sparc/crypto/md5_glue.c
+++ b/arch/sparc/crypto/md5_glue.c
@@ -186,3 +186,5 @@ MODULE_LICENSE("GPL");
186MODULE_DESCRIPTION("MD5 Secure Hash Algorithm, sparc64 md5 opcode accelerated"); 186MODULE_DESCRIPTION("MD5 Secure Hash Algorithm, sparc64 md5 opcode accelerated");
187 187
188MODULE_ALIAS("md5"); 188MODULE_ALIAS("md5");
189
190#include "crop_devid.c"
diff --git a/arch/sparc/crypto/sha1_glue.c b/arch/sparc/crypto/sha1_glue.c
index 2bbb20bee9f1..6cd5f29e1e0d 100644
--- a/arch/sparc/crypto/sha1_glue.c
+++ b/arch/sparc/crypto/sha1_glue.c
@@ -181,3 +181,5 @@ MODULE_LICENSE("GPL");
181MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, sparc64 sha1 opcode accelerated"); 181MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, sparc64 sha1 opcode accelerated");
182 182
183MODULE_ALIAS("sha1"); 183MODULE_ALIAS("sha1");
184
185#include "crop_devid.c"
diff --git a/arch/sparc/crypto/sha256_glue.c b/arch/sparc/crypto/sha256_glue.c
index 591e656bd891..04f555ab2680 100644
--- a/arch/sparc/crypto/sha256_glue.c
+++ b/arch/sparc/crypto/sha256_glue.c
@@ -239,3 +239,5 @@ MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm, sparc64 sha256 op
239 239
240MODULE_ALIAS("sha224"); 240MODULE_ALIAS("sha224");
241MODULE_ALIAS("sha256"); 241MODULE_ALIAS("sha256");
242
243#include "crop_devid.c"
diff --git a/arch/sparc/crypto/sha512_glue.c b/arch/sparc/crypto/sha512_glue.c
index 486f0a2b7001..f04d1994d19a 100644
--- a/arch/sparc/crypto/sha512_glue.c
+++ b/arch/sparc/crypto/sha512_glue.c
@@ -224,3 +224,5 @@ MODULE_DESCRIPTION("SHA-384 and SHA-512 Secure Hash Algorithm, sparc64 sha512 op
224 224
225MODULE_ALIAS("sha384"); 225MODULE_ALIAS("sha384");
226MODULE_ALIAS("sha512"); 226MODULE_ALIAS("sha512");
227
228#include "crop_devid.c"
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index ce35a1cf1a20..be56a244c9cf 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -1,7 +1,7 @@
1/* atomic.h: Thankfully the V9 is at least reasonable for this 1/* atomic.h: Thankfully the V9 is at least reasonable for this
2 * stuff. 2 * stuff.
3 * 3 *
4 * Copyright (C) 1996, 1997, 2000 David S. Miller (davem@redhat.com) 4 * Copyright (C) 1996, 1997, 2000, 2012 David S. Miller (davem@redhat.com)
5 */ 5 */
6 6
7#ifndef __ARCH_SPARC64_ATOMIC__ 7#ifndef __ARCH_SPARC64_ATOMIC__
@@ -106,6 +106,8 @@ static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
106 106
107#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) 107#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
108 108
109extern long atomic64_dec_if_positive(atomic64_t *v);
110
109/* Atomic operations are already serializing */ 111/* Atomic operations are already serializing */
110#define smp_mb__before_atomic_dec() barrier() 112#define smp_mb__before_atomic_dec() barrier()
111#define smp_mb__after_atomic_dec() barrier() 113#define smp_mb__after_atomic_dec() barrier()
diff --git a/arch/sparc/include/asm/backoff.h b/arch/sparc/include/asm/backoff.h
index db3af0d30fb1..4e02086b839c 100644
--- a/arch/sparc/include/asm/backoff.h
+++ b/arch/sparc/include/asm/backoff.h
@@ -1,6 +1,46 @@
1#ifndef _SPARC64_BACKOFF_H 1#ifndef _SPARC64_BACKOFF_H
2#define _SPARC64_BACKOFF_H 2#define _SPARC64_BACKOFF_H
3 3
4/* The macros in this file implement an exponential backoff facility
5 * for atomic operations.
6 *
7 * When multiple threads compete on an atomic operation, it is
8 * possible for one thread to be continually denied a successful
9 * completion of the compare-and-swap instruction. Heavily
10 * threaded cpu implementations like Niagara can compound this
11 * problem even further.
12 *
13 * When an atomic operation fails and needs to be retried, we spin a
14 * certain number of times. At each subsequent failure of the same
15 * operation we double the spin count, realizing an exponential
16 * backoff.
17 *
18 * When we spin, we try to use an operation that will cause the
19 * current cpu strand to block, and therefore make the core fully
20 * available to any other other runnable strands. There are two
21 * options, based upon cpu capabilities.
22 *
23 * On all cpus prior to SPARC-T4 we do three dummy reads of the
24 * condition code register. Each read blocks the strand for something
25 * between 40 and 50 cpu cycles.
26 *
27 * For SPARC-T4 and later we have a special "pause" instruction
28 * available. This is implemented using writes to register %asr27.
29 * The cpu will block the number of cycles written into the register,
30 * unless a disrupting trap happens first. SPARC-T4 specifically
31 * implements pause with a granularity of 8 cycles. Each strand has
32 * an internal pause counter which decrements every 8 cycles. So the
33 * chip shifts the %asr27 value down by 3 bits, and writes the result
34 * into the pause counter. If a value smaller than 8 is written, the
35 * chip blocks for 1 cycle.
36 *
37 * To achieve the same amount of backoff as the three %ccr reads give
38 * on earlier chips, we shift the backoff value up by 7 bits. (Three
39 * %ccr reads block for about 128 cycles, 1 << 7 == 128) We write the
40 * whole amount we want to block into the pause register, rather than
41 * loop writing 128 each time.
42 */
43
4#define BACKOFF_LIMIT (4 * 1024) 44#define BACKOFF_LIMIT (4 * 1024)
5 45
6#ifdef CONFIG_SMP 46#ifdef CONFIG_SMP
@@ -11,16 +51,25 @@
11#define BACKOFF_LABEL(spin_label, continue_label) \ 51#define BACKOFF_LABEL(spin_label, continue_label) \
12 spin_label 52 spin_label
13 53
14#define BACKOFF_SPIN(reg, tmp, label) \ 54#define BACKOFF_SPIN(reg, tmp, label) \
15 mov reg, tmp; \ 55 mov reg, tmp; \
1688: brnz,pt tmp, 88b; \ 5688: rd %ccr, %g0; \
17 sub tmp, 1, tmp; \ 57 rd %ccr, %g0; \
18 set BACKOFF_LIMIT, tmp; \ 58 rd %ccr, %g0; \
19 cmp reg, tmp; \ 59 .section .pause_3insn_patch,"ax";\
20 bg,pn %xcc, label; \ 60 .word 88b; \
21 nop; \ 61 sllx tmp, 7, tmp; \
22 ba,pt %xcc, label; \ 62 wr tmp, 0, %asr27; \
23 sllx reg, 1, reg; 63 clr tmp; \
64 .previous; \
65 brnz,pt tmp, 88b; \
66 sub tmp, 1, tmp; \
67 set BACKOFF_LIMIT, tmp; \
68 cmp reg, tmp; \
69 bg,pn %xcc, label; \
70 nop; \
71 ba,pt %xcc, label; \
72 sllx reg, 1, reg;
24 73
25#else 74#else
26 75
diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h
index cef99fbc0a21..830502fe62b4 100644
--- a/arch/sparc/include/asm/compat.h
+++ b/arch/sparc/include/asm/compat.h
@@ -232,9 +232,10 @@ static inline void __user *arch_compat_alloc_user_space(long len)
232 struct pt_regs *regs = current_thread_info()->kregs; 232 struct pt_regs *regs = current_thread_info()->kregs;
233 unsigned long usp = regs->u_regs[UREG_I6]; 233 unsigned long usp = regs->u_regs[UREG_I6];
234 234
235 if (!(test_thread_flag(TIF_32BIT))) 235 if (test_thread_64bit_stack(usp))
236 usp += STACK_BIAS; 236 usp += STACK_BIAS;
237 else 237
238 if (test_thread_flag(TIF_32BIT))
238 usp &= 0xffffffffUL; 239 usp &= 0xffffffffUL;
239 240
240 usp -= len; 241 usp -= len;
diff --git a/arch/sparc/include/asm/processor_32.h b/arch/sparc/include/asm/processor_32.h
index f74ac9ee33a8..c1e01914fd98 100644
--- a/arch/sparc/include/asm/processor_32.h
+++ b/arch/sparc/include/asm/processor_32.h
@@ -106,7 +106,6 @@ static inline void start_thread(struct pt_regs * regs, unsigned long pc,
106 106
107/* Free all resources held by a thread. */ 107/* Free all resources held by a thread. */
108#define release_thread(tsk) do { } while(0) 108#define release_thread(tsk) do { } while(0)
109extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
110 109
111extern unsigned long get_wchan(struct task_struct *); 110extern unsigned long get_wchan(struct task_struct *);
112 111
diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h
index 4e5a483122a0..cce72ce4c334 100644
--- a/arch/sparc/include/asm/processor_64.h
+++ b/arch/sparc/include/asm/processor_64.h
@@ -94,6 +94,7 @@ struct thread_struct {
94#ifndef __ASSEMBLY__ 94#ifndef __ASSEMBLY__
95 95
96#include <linux/types.h> 96#include <linux/types.h>
97#include <asm/fpumacro.h>
97 98
98/* Return saved PC of a blocked thread. */ 99/* Return saved PC of a blocked thread. */
99struct task_struct; 100struct task_struct;
@@ -143,6 +144,10 @@ do { \
143 : \ 144 : \
144 : "r" (regs), "r" (sp - sizeof(struct reg_window) - STACK_BIAS), \ 145 : "r" (regs), "r" (sp - sizeof(struct reg_window) - STACK_BIAS), \
145 "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \ 146 "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \
147 fprs_write(0); \
148 current_thread_info()->xfsr[0] = 0; \
149 current_thread_info()->fpsaved[0] = 0; \
150 regs->tstate &= ~TSTATE_PEF; \
146} while (0) 151} while (0)
147 152
148#define start_thread32(regs, pc, sp) \ 153#define start_thread32(regs, pc, sp) \
@@ -183,20 +188,37 @@ do { \
183 : \ 188 : \
184 : "r" (regs), "r" (sp - sizeof(struct reg_window32)), \ 189 : "r" (regs), "r" (sp - sizeof(struct reg_window32)), \
185 "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \ 190 "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \
191 fprs_write(0); \
192 current_thread_info()->xfsr[0] = 0; \
193 current_thread_info()->fpsaved[0] = 0; \
194 regs->tstate &= ~TSTATE_PEF; \
186} while (0) 195} while (0)
187 196
188/* Free all resources held by a thread. */ 197/* Free all resources held by a thread. */
189#define release_thread(tsk) do { } while (0) 198#define release_thread(tsk) do { } while (0)
190 199
191extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
192
193extern unsigned long get_wchan(struct task_struct *task); 200extern unsigned long get_wchan(struct task_struct *task);
194 201
195#define task_pt_regs(tsk) (task_thread_info(tsk)->kregs) 202#define task_pt_regs(tsk) (task_thread_info(tsk)->kregs)
196#define KSTK_EIP(tsk) (task_pt_regs(tsk)->tpc) 203#define KSTK_EIP(tsk) (task_pt_regs(tsk)->tpc)
197#define KSTK_ESP(tsk) (task_pt_regs(tsk)->u_regs[UREG_FP]) 204#define KSTK_ESP(tsk) (task_pt_regs(tsk)->u_regs[UREG_FP])
198 205
199#define cpu_relax() barrier() 206/* Please see the commentary in asm/backoff.h for a description of
207 * what these instructions are doing and how they have been choosen.
208 * To make a long story short, we are trying to yield the current cpu
209 * strand during busy loops.
210 */
211#define cpu_relax() asm volatile("\n99:\n\t" \
212 "rd %%ccr, %%g0\n\t" \
213 "rd %%ccr, %%g0\n\t" \
214 "rd %%ccr, %%g0\n\t" \
215 ".section .pause_3insn_patch,\"ax\"\n\t"\
216 ".word 99b\n\t" \
217 "wr %%g0, 128, %%asr27\n\t" \
218 "nop\n\t" \
219 "nop\n\t" \
220 ".previous" \
221 ::: "memory")
200 222
201/* Prefetch support. This is tuned for UltraSPARC-III and later. 223/* Prefetch support. This is tuned for UltraSPARC-III and later.
202 * UltraSPARC-I will treat these as nops, and UltraSPARC-II has 224 * UltraSPARC-I will treat these as nops, and UltraSPARC-II has
diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h
index c28765110706..f93003123bce 100644
--- a/arch/sparc/include/asm/prom.h
+++ b/arch/sparc/include/asm/prom.h
@@ -63,5 +63,10 @@ extern char *of_console_options;
63extern void irq_trans_init(struct device_node *dp); 63extern void irq_trans_init(struct device_node *dp);
64extern char *build_path_component(struct device_node *dp); 64extern char *build_path_component(struct device_node *dp);
65 65
66/* SPARC has a local implementation */
67extern int of_address_to_resource(struct device_node *dev, int index,
68 struct resource *r);
69#define of_address_to_resource of_address_to_resource
70
66#endif /* __KERNEL__ */ 71#endif /* __KERNEL__ */
67#endif /* _SPARC_PROM_H */ 72#endif /* _SPARC_PROM_H */
diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h
index da43bdc62294..bdfafd7af46f 100644
--- a/arch/sparc/include/asm/ptrace.h
+++ b/arch/sparc/include/asm/ptrace.h
@@ -32,6 +32,9 @@ static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
32#define arch_ptrace_stop(exit_code, info) \ 32#define arch_ptrace_stop(exit_code, info) \
33 synchronize_user_stack() 33 synchronize_user_stack()
34 34
35#define current_pt_regs() \
36 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
37
35struct global_reg_snapshot { 38struct global_reg_snapshot {
36 unsigned long tstate; 39 unsigned long tstate;
37 unsigned long tpc; 40 unsigned long tpc;
@@ -55,9 +58,7 @@ union global_cpu_snapshot {
55 58
56extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS]; 59extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
57 60
58#define force_successful_syscall_return() \ 61#define force_successful_syscall_return() set_thread_noerror(1)
59do { current_thread_info()->syscall_noerror = 1; \
60} while (0)
61#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV)) 62#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
62#define instruction_pointer(regs) ((regs)->tpc) 63#define instruction_pointer(regs) ((regs)->tpc)
63#define instruction_pointer_set(regs, val) ((regs)->tpc = (val)) 64#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
@@ -100,6 +101,9 @@ static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
100#define arch_ptrace_stop(exit_code, info) \ 101#define arch_ptrace_stop(exit_code, info) \
101 synchronize_user_stack() 102 synchronize_user_stack()
102 103
104#define current_pt_regs() \
105 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
106
103#define user_mode(regs) (!((regs)->psr & PSR_PS)) 107#define user_mode(regs) (!((regs)->psr & PSR_PS))
104#define instruction_pointer(regs) ((regs)->pc) 108#define instruction_pointer(regs) ((regs)->pc)
105#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP]) 109#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
diff --git a/arch/sparc/include/asm/switch_to_64.h b/arch/sparc/include/asm/switch_to_64.h
index 7923c4a2be38..cad36f56fa03 100644
--- a/arch/sparc/include/asm/switch_to_64.h
+++ b/arch/sparc/include/asm/switch_to_64.h
@@ -23,7 +23,7 @@ do { flush_tlb_pending(); \
23 /* If you are tempted to conditionalize the following */ \ 23 /* If you are tempted to conditionalize the following */ \
24 /* so that ASI is only written if it changes, think again. */ \ 24 /* so that ASI is only written if it changes, think again. */ \
25 __asm__ __volatile__("wr %%g0, %0, %%asi" \ 25 __asm__ __volatile__("wr %%g0, %0, %%asi" \
26 : : "r" (__thread_flag_byte_ptr(task_thread_info(next))[TI_FLAG_BYTE_CURRENT_DS]));\ 26 : : "r" (task_thread_info(next)->current_ds));\
27 trap_block[current_thread_info()->cpu].thread = \ 27 trap_block[current_thread_info()->cpu].thread = \
28 task_thread_info(next); \ 28 task_thread_info(next); \
29 __asm__ __volatile__( \ 29 __asm__ __volatile__( \
diff --git a/arch/sparc/include/asm/syscalls.h b/arch/sparc/include/asm/syscalls.h
index 45a43f637a14..bf8972adea17 100644
--- a/arch/sparc/include/asm/syscalls.h
+++ b/arch/sparc/include/asm/syscalls.h
@@ -8,6 +8,4 @@ extern asmlinkage long sparc_do_fork(unsigned long clone_flags,
8 struct pt_regs *regs, 8 struct pt_regs *regs,
9 unsigned long stack_size); 9 unsigned long stack_size);
10 10
11extern asmlinkage int sparc_execve(struct pt_regs *regs);
12
13#endif /* _SPARC64_SYSCALLS_H */ 11#endif /* _SPARC64_SYSCALLS_H */
diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
index 4e2276631081..269bd92313df 100644
--- a/arch/sparc/include/asm/thread_info_64.h
+++ b/arch/sparc/include/asm/thread_info_64.h
@@ -14,12 +14,12 @@
14#define TI_FLAG_FAULT_CODE_SHIFT 56 14#define TI_FLAG_FAULT_CODE_SHIFT 56
15#define TI_FLAG_BYTE_WSTATE 1 15#define TI_FLAG_BYTE_WSTATE 1
16#define TI_FLAG_WSTATE_SHIFT 48 16#define TI_FLAG_WSTATE_SHIFT 48
17#define TI_FLAG_BYTE_CWP 2 17#define TI_FLAG_BYTE_NOERROR 2
18#define TI_FLAG_CWP_SHIFT 40 18#define TI_FLAG_BYTE_NOERROR_SHIFT 40
19#define TI_FLAG_BYTE_CURRENT_DS 3 19#define TI_FLAG_BYTE_FPDEPTH 3
20#define TI_FLAG_CURRENT_DS_SHIFT 32 20#define TI_FLAG_FPDEPTH_SHIFT 32
21#define TI_FLAG_BYTE_FPDEPTH 4 21#define TI_FLAG_BYTE_CWP 4
22#define TI_FLAG_FPDEPTH_SHIFT 24 22#define TI_FLAG_CWP_SHIFT 24
23#define TI_FLAG_BYTE_WSAVED 5 23#define TI_FLAG_BYTE_WSAVED 5
24#define TI_FLAG_WSAVED_SHIFT 16 24#define TI_FLAG_WSAVED_SHIFT 16
25 25
@@ -47,7 +47,7 @@ struct thread_info {
47 struct exec_domain *exec_domain; 47 struct exec_domain *exec_domain;
48 int preempt_count; /* 0 => preemptable, <0 => BUG */ 48 int preempt_count; /* 0 => preemptable, <0 => BUG */
49 __u8 new_child; 49 __u8 new_child;
50 __u8 syscall_noerror; 50 __u8 current_ds;
51 __u16 cpu; 51 __u16 cpu;
52 52
53 unsigned long *utraps; 53 unsigned long *utraps;
@@ -74,9 +74,9 @@ struct thread_info {
74#define TI_FAULT_CODE (TI_FLAGS + TI_FLAG_BYTE_FAULT_CODE) 74#define TI_FAULT_CODE (TI_FLAGS + TI_FLAG_BYTE_FAULT_CODE)
75#define TI_WSTATE (TI_FLAGS + TI_FLAG_BYTE_WSTATE) 75#define TI_WSTATE (TI_FLAGS + TI_FLAG_BYTE_WSTATE)
76#define TI_CWP (TI_FLAGS + TI_FLAG_BYTE_CWP) 76#define TI_CWP (TI_FLAGS + TI_FLAG_BYTE_CWP)
77#define TI_CURRENT_DS (TI_FLAGS + TI_FLAG_BYTE_CURRENT_DS)
78#define TI_FPDEPTH (TI_FLAGS + TI_FLAG_BYTE_FPDEPTH) 77#define TI_FPDEPTH (TI_FLAGS + TI_FLAG_BYTE_FPDEPTH)
79#define TI_WSAVED (TI_FLAGS + TI_FLAG_BYTE_WSAVED) 78#define TI_WSAVED (TI_FLAGS + TI_FLAG_BYTE_WSAVED)
79#define TI_SYS_NOERROR (TI_FLAGS + TI_FLAG_BYTE_NOERROR)
80#define TI_FPSAVED 0x00000010 80#define TI_FPSAVED 0x00000010
81#define TI_KSP 0x00000018 81#define TI_KSP 0x00000018
82#define TI_FAULT_ADDR 0x00000020 82#define TI_FAULT_ADDR 0x00000020
@@ -84,7 +84,7 @@ struct thread_info {
84#define TI_EXEC_DOMAIN 0x00000030 84#define TI_EXEC_DOMAIN 0x00000030
85#define TI_PRE_COUNT 0x00000038 85#define TI_PRE_COUNT 0x00000038
86#define TI_NEW_CHILD 0x0000003c 86#define TI_NEW_CHILD 0x0000003c
87#define TI_SYS_NOERROR 0x0000003d 87#define TI_CURRENT_DS 0x0000003d
88#define TI_CPU 0x0000003e 88#define TI_CPU 0x0000003e
89#define TI_UTRAPS 0x00000040 89#define TI_UTRAPS 0x00000040
90#define TI_REG_WINDOW 0x00000048 90#define TI_REG_WINDOW 0x00000048
@@ -121,7 +121,7 @@ struct thread_info {
121#define INIT_THREAD_INFO(tsk) \ 121#define INIT_THREAD_INFO(tsk) \
122{ \ 122{ \
123 .task = &tsk, \ 123 .task = &tsk, \
124 .flags = ((unsigned long)ASI_P) << TI_FLAG_CURRENT_DS_SHIFT, \ 124 .current_ds = ASI_P, \
125 .exec_domain = &default_exec_domain, \ 125 .exec_domain = &default_exec_domain, \
126 .preempt_count = INIT_PREEMPT_COUNT, \ 126 .preempt_count = INIT_PREEMPT_COUNT, \
127 .restart_block = { \ 127 .restart_block = { \
@@ -153,13 +153,12 @@ register struct thread_info *current_thread_info_reg asm("g6");
153#define set_thread_wstate(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE] = (val)) 153#define set_thread_wstate(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE] = (val))
154#define get_thread_cwp() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP]) 154#define get_thread_cwp() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP])
155#define set_thread_cwp(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val)) 155#define set_thread_cwp(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val))
156#define get_thread_current_ds() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS]) 156#define get_thread_noerror() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR])
157#define set_thread_current_ds(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS] = (val)) 157#define set_thread_noerror(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR] = (val))
158#define get_thread_fpdepth() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH]) 158#define get_thread_fpdepth() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH])
159#define set_thread_fpdepth(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val)) 159#define set_thread_fpdepth(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val))
160#define get_thread_wsaved() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED]) 160#define get_thread_wsaved() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED])
161#define set_thread_wsaved(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED] = (val)) 161#define set_thread_wsaved(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED] = (val))
162
163#endif /* !(__ASSEMBLY__) */ 162#endif /* !(__ASSEMBLY__) */
164 163
165/* 164/*
@@ -259,6 +258,11 @@ static inline bool test_and_clear_restore_sigmask(void)
259 258
260#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG) 259#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
261 260
261#define thread32_stack_is_64bit(__SP) (((__SP) & 0x1) != 0)
262#define test_thread_64bit_stack(__SP) \
263 ((test_thread_flag(TIF_32BIT) && !thread32_stack_is_64bit(__SP)) ? \
264 false : true)
265
262#endif /* !__ASSEMBLY__ */ 266#endif /* !__ASSEMBLY__ */
263 267
264#endif /* __KERNEL__ */ 268#endif /* __KERNEL__ */
diff --git a/arch/sparc/include/asm/ttable.h b/arch/sparc/include/asm/ttable.h
index 48f2807d3265..71b5a67522ab 100644
--- a/arch/sparc/include/asm/ttable.h
+++ b/arch/sparc/include/asm/ttable.h
@@ -372,7 +372,9 @@ etrap_spill_fixup_64bit: \
372 372
373/* Normal 32bit spill */ 373/* Normal 32bit spill */
374#define SPILL_2_GENERIC(ASI) \ 374#define SPILL_2_GENERIC(ASI) \
375 srl %sp, 0, %sp; \ 375 and %sp, 1, %g3; \
376 brnz,pn %g3, (. - (128 + 4)); \
377 srl %sp, 0, %sp; \
376 stwa %l0, [%sp + %g0] ASI; \ 378 stwa %l0, [%sp + %g0] ASI; \
377 mov 0x04, %g3; \ 379 mov 0x04, %g3; \
378 stwa %l1, [%sp + %g3] ASI; \ 380 stwa %l1, [%sp + %g3] ASI; \
@@ -398,14 +400,16 @@ etrap_spill_fixup_64bit: \
398 stwa %i6, [%g1 + %g0] ASI; \ 400 stwa %i6, [%g1 + %g0] ASI; \
399 stwa %i7, [%g1 + %g3] ASI; \ 401 stwa %i7, [%g1 + %g3] ASI; \
400 saved; \ 402 saved; \
401 retry; nop; nop; \ 403 retry; \
402 b,a,pt %xcc, spill_fixup_dax; \ 404 b,a,pt %xcc, spill_fixup_dax; \
403 b,a,pt %xcc, spill_fixup_mna; \ 405 b,a,pt %xcc, spill_fixup_mna; \
404 b,a,pt %xcc, spill_fixup; 406 b,a,pt %xcc, spill_fixup;
405 407
406#define SPILL_2_GENERIC_ETRAP \ 408#define SPILL_2_GENERIC_ETRAP \
407etrap_user_spill_32bit: \ 409etrap_user_spill_32bit: \
408 srl %sp, 0, %sp; \ 410 and %sp, 1, %g3; \
411 brnz,pn %g3, etrap_user_spill_64bit; \
412 srl %sp, 0, %sp; \
409 stwa %l0, [%sp + 0x00] %asi; \ 413 stwa %l0, [%sp + 0x00] %asi; \
410 stwa %l1, [%sp + 0x04] %asi; \ 414 stwa %l1, [%sp + 0x04] %asi; \
411 stwa %l2, [%sp + 0x08] %asi; \ 415 stwa %l2, [%sp + 0x08] %asi; \
@@ -427,7 +431,7 @@ etrap_user_spill_32bit: \
427 ba,pt %xcc, etrap_save; \ 431 ba,pt %xcc, etrap_save; \
428 wrpr %g1, %cwp; \ 432 wrpr %g1, %cwp; \
429 nop; nop; nop; nop; \ 433 nop; nop; nop; nop; \
430 nop; nop; nop; nop; \ 434 nop; nop; \
431 ba,a,pt %xcc, etrap_spill_fixup_32bit; \ 435 ba,a,pt %xcc, etrap_spill_fixup_32bit; \
432 ba,a,pt %xcc, etrap_spill_fixup_32bit; \ 436 ba,a,pt %xcc, etrap_spill_fixup_32bit; \
433 ba,a,pt %xcc, etrap_spill_fixup_32bit; 437 ba,a,pt %xcc, etrap_spill_fixup_32bit;
@@ -592,7 +596,9 @@ user_rtt_fill_64bit: \
592 596
593/* Normal 32bit fill */ 597/* Normal 32bit fill */
594#define FILL_2_GENERIC(ASI) \ 598#define FILL_2_GENERIC(ASI) \
595 srl %sp, 0, %sp; \ 599 and %sp, 1, %g3; \
600 brnz,pn %g3, (. - (128 + 4)); \
601 srl %sp, 0, %sp; \
596 lduwa [%sp + %g0] ASI, %l0; \ 602 lduwa [%sp + %g0] ASI, %l0; \
597 mov 0x04, %g2; \ 603 mov 0x04, %g2; \
598 mov 0x08, %g3; \ 604 mov 0x08, %g3; \
@@ -616,14 +622,16 @@ user_rtt_fill_64bit: \
616 lduwa [%g1 + %g3] ASI, %i6; \ 622 lduwa [%g1 + %g3] ASI, %i6; \
617 lduwa [%g1 + %g5] ASI, %i7; \ 623 lduwa [%g1 + %g5] ASI, %i7; \
618 restored; \ 624 restored; \
619 retry; nop; nop; nop; nop; \ 625 retry; nop; nop; \
620 b,a,pt %xcc, fill_fixup_dax; \ 626 b,a,pt %xcc, fill_fixup_dax; \
621 b,a,pt %xcc, fill_fixup_mna; \ 627 b,a,pt %xcc, fill_fixup_mna; \
622 b,a,pt %xcc, fill_fixup; 628 b,a,pt %xcc, fill_fixup;
623 629
624#define FILL_2_GENERIC_RTRAP \ 630#define FILL_2_GENERIC_RTRAP \
625user_rtt_fill_32bit: \ 631user_rtt_fill_32bit: \
626 srl %sp, 0, %sp; \ 632 and %sp, 1, %g3; \
633 brnz,pn %g3, user_rtt_fill_64bit; \
634 srl %sp, 0, %sp; \
627 lduwa [%sp + 0x00] %asi, %l0; \ 635 lduwa [%sp + 0x00] %asi, %l0; \
628 lduwa [%sp + 0x04] %asi, %l1; \ 636 lduwa [%sp + 0x04] %asi, %l1; \
629 lduwa [%sp + 0x08] %asi, %l2; \ 637 lduwa [%sp + 0x08] %asi, %l2; \
@@ -643,7 +651,7 @@ user_rtt_fill_32bit: \
643 ba,pt %xcc, user_rtt_pre_restore; \ 651 ba,pt %xcc, user_rtt_pre_restore; \
644 restored; \ 652 restored; \
645 nop; nop; nop; nop; nop; \ 653 nop; nop; nop; nop; nop; \
646 nop; nop; nop; nop; nop; \ 654 nop; nop; nop; \
647 ba,a,pt %xcc, user_rtt_fill_fixup; \ 655 ba,a,pt %xcc, user_rtt_fill_fixup; \
648 ba,a,pt %xcc, user_rtt_fill_fixup; \ 656 ba,a,pt %xcc, user_rtt_fill_fixup; \
649 ba,a,pt %xcc, user_rtt_fill_fixup; 657 ba,a,pt %xcc, user_rtt_fill_fixup;
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index 73083e1d38d9..e562d3caee57 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -38,14 +38,14 @@
38#define VERIFY_READ 0 38#define VERIFY_READ 0
39#define VERIFY_WRITE 1 39#define VERIFY_WRITE 1
40 40
41#define get_fs() ((mm_segment_t) { get_thread_current_ds() }) 41#define get_fs() ((mm_segment_t){(current_thread_info()->current_ds)})
42#define get_ds() (KERNEL_DS) 42#define get_ds() (KERNEL_DS)
43 43
44#define segment_eq(a,b) ((a).seg == (b).seg) 44#define segment_eq(a,b) ((a).seg == (b).seg)
45 45
46#define set_fs(val) \ 46#define set_fs(val) \
47do { \ 47do { \
48 set_thread_current_ds((val).seg); \ 48 current_thread_info()->current_ds =(val).seg; \
49 __asm__ __volatile__ ("wr %%g0, %0, %%asi" : : "r" ((val).seg)); \ 49 __asm__ __volatile__ ("wr %%g0, %0, %%asi" : : "r" ((val).seg)); \
50} while(0) 50} while(0)
51 51
diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h
index 0ecea6ed943e..c3e5d8b64171 100644
--- a/arch/sparc/include/asm/unistd.h
+++ b/arch/sparc/include/asm/unistd.h
@@ -46,6 +46,7 @@
46#define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND 46#define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
47#define __ARCH_WANT_COMPAT_SYS_SENDFILE 47#define __ARCH_WANT_COMPAT_SYS_SENDFILE
48#endif 48#endif
49#define __ARCH_WANT_SYS_EXECVE
49 50
50/* 51/*
51 * "Conditional" syscalls 52 * "Conditional" syscalls
diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h
index 8974ef7ae920..cac719d1bc5c 100644
--- a/arch/sparc/include/uapi/asm/unistd.h
+++ b/arch/sparc/include/uapi/asm/unistd.h
@@ -405,8 +405,13 @@
405#define __NR_setns 337 405#define __NR_setns 337
406#define __NR_process_vm_readv 338 406#define __NR_process_vm_readv 338
407#define __NR_process_vm_writev 339 407#define __NR_process_vm_writev 339
408#define __NR_kern_features 340
409#define __NR_kcmp 341
408 410
409#define NR_syscalls 340 411#define NR_syscalls 342
412
413/* Bitmask values returned from kern_features system call. */
414#define KERN_FEATURE_MIXED_MODE_STACK 0x00000001
410 415
411#ifdef __32bit_syscall_numbers__ 416#ifdef __32bit_syscall_numbers__
412/* Sparc 32-bit only has the "setresuid32", "getresuid32" variants, 417/* Sparc 32-bit only has the "setresuid32", "getresuid32" variants,
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index dcaa1cf0de40..21fd1a8f47d2 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -806,23 +806,10 @@ sys_nis_syscall:
806 call c_sys_nis_syscall 806 call c_sys_nis_syscall
807 mov %l5, %o7 807 mov %l5, %o7
808 808
809 .align 4
810 .globl sys_execve
811sys_execve:
812 mov %o7, %l5
813 add %sp, STACKFRAME_SZ, %o0 ! pt_regs *regs arg
814 call sparc_execve
815 mov %l5, %o7
816
817 .globl sunos_execv
818sunos_execv: 809sunos_execv:
819 st %g0, [%sp + STACKFRAME_SZ + PT_I2] 810 .globl sunos_execv
820 811 b sys_execve
821 call sparc_execve 812 clr %i2
822 add %sp, STACKFRAME_SZ, %o0
823
824 b ret_sys_call
825 ld [%sp + STACKFRAME_SZ + PT_I0], %o0
826 813
827 .align 4 814 .align 4
828 .globl sys_sparc_pipe 815 .globl sys_sparc_pipe
@@ -959,17 +946,9 @@ flush_patch_four:
959 .align 4 946 .align 4
960linux_sparc_ni_syscall: 947linux_sparc_ni_syscall:
961 sethi %hi(sys_ni_syscall), %l7 948 sethi %hi(sys_ni_syscall), %l7
962 b syscall_is_too_hard 949 b do_syscall
963 or %l7, %lo(sys_ni_syscall), %l7 950 or %l7, %lo(sys_ni_syscall), %l7
964 951
965linux_fast_syscall:
966 andn %l7, 3, %l7
967 mov %i0, %o0
968 mov %i1, %o1
969 mov %i2, %o2
970 jmpl %l7 + %g0, %g0
971 mov %i3, %o3
972
973linux_syscall_trace: 952linux_syscall_trace:
974 add %sp, STACKFRAME_SZ, %o0 953 add %sp, STACKFRAME_SZ, %o0
975 call syscall_trace 954 call syscall_trace
@@ -991,6 +970,23 @@ ret_from_fork:
991 b ret_sys_call 970 b ret_sys_call
992 ld [%sp + STACKFRAME_SZ + PT_I0], %o0 971 ld [%sp + STACKFRAME_SZ + PT_I0], %o0
993 972
973 .globl ret_from_kernel_thread
974ret_from_kernel_thread:
975 call schedule_tail
976 ld [%g3 + TI_TASK], %o0
977 ld [%sp + STACKFRAME_SZ + PT_G1], %l0
978 call %l0
979 ld [%sp + STACKFRAME_SZ + PT_G2], %o0
980 rd %psr, %l1
981 ld [%sp + STACKFRAME_SZ + PT_PSR], %l0
982 andn %l0, PSR_CWP, %l0
983 nop
984 and %l1, PSR_CWP, %l1
985 or %l0, %l1, %l0
986 st %l0, [%sp + STACKFRAME_SZ + PT_PSR]
987 b ret_sys_call
988 mov 0, %o0
989
994 /* Linux native system calls enter here... */ 990 /* Linux native system calls enter here... */
995 .align 4 991 .align 4
996 .globl linux_sparc_syscall 992 .globl linux_sparc_syscall
@@ -1002,11 +998,8 @@ linux_sparc_syscall:
1002 bgeu linux_sparc_ni_syscall 998 bgeu linux_sparc_ni_syscall
1003 sll %g1, 2, %l4 999 sll %g1, 2, %l4
1004 ld [%l7 + %l4], %l7 1000 ld [%l7 + %l4], %l7
1005 andcc %l7, 1, %g0
1006 bne linux_fast_syscall
1007 /* Just do first insn from SAVE_ALL in the delay slot */
1008 1001
1009syscall_is_too_hard: 1002do_syscall:
1010 SAVE_ALL_HEAD 1003 SAVE_ALL_HEAD
1011 rd %wim, %l3 1004 rd %wim, %l3
1012 1005
diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h
index 0c218e4c0881..cc3c5cb47cda 100644
--- a/arch/sparc/kernel/entry.h
+++ b/arch/sparc/kernel/entry.h
@@ -59,6 +59,13 @@ struct popc_6insn_patch_entry {
59extern struct popc_6insn_patch_entry __popc_6insn_patch, 59extern struct popc_6insn_patch_entry __popc_6insn_patch,
60 __popc_6insn_patch_end; 60 __popc_6insn_patch_end;
61 61
62struct pause_patch_entry {
63 unsigned int addr;
64 unsigned int insns[3];
65};
66extern struct pause_patch_entry __pause_3insn_patch,
67 __pause_3insn_patch_end;
68
62extern void __init per_cpu_patch(void); 69extern void __init per_cpu_patch(void);
63extern void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *, 70extern void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *,
64 struct sun4v_1insn_patch_entry *); 71 struct sun4v_1insn_patch_entry *);
diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S
index 786b185e6e3f..1276ca2567ba 100644
--- a/arch/sparc/kernel/etrap_64.S
+++ b/arch/sparc/kernel/etrap_64.S
@@ -92,8 +92,10 @@ etrap_save: save %g2, -STACK_BIAS, %sp
92 rdpr %wstate, %g2 92 rdpr %wstate, %g2
93 wrpr %g0, 0, %canrestore 93 wrpr %g0, 0, %canrestore
94 sll %g2, 3, %g2 94 sll %g2, 3, %g2
95
96 /* Set TI_SYS_FPDEPTH to 1 and clear TI_SYS_NOERROR. */
95 mov 1, %l5 97 mov 1, %l5
96 stb %l5, [%l6 + TI_FPDEPTH] 98 sth %l5, [%l6 + TI_SYS_NOERROR]
97 99
98 wrpr %g3, 0, %otherwin 100 wrpr %g3, 0, %otherwin
99 wrpr %g2, 0, %wstate 101 wrpr %g2, 0, %wstate
@@ -152,7 +154,9 @@ etrap_save: save %g2, -STACK_BIAS, %sp
152 add %l6, TI_FPSAVED + 1, %l4 154 add %l6, TI_FPSAVED + 1, %l4
153 srl %l5, 1, %l3 155 srl %l5, 1, %l3
154 add %l5, 2, %l5 156 add %l5, 2, %l5
155 stb %l5, [%l6 + TI_FPDEPTH] 157
158 /* Set TI_SYS_FPDEPTH to %l5 and clear TI_SYS_NOERROR. */
159 sth %l5, [%l6 + TI_SYS_NOERROR]
156 ba,pt %xcc, 2b 160 ba,pt %xcc, 2b
157 stb %g0, [%l4 + %l3] 161 stb %g0, [%l4 + %l3]
158 nop 162 nop
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index f8b6eee40bde..87f60ee65433 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -56,11 +56,13 @@ static inline unsigned int leon_eirq_get(int cpu)
56static void leon_handle_ext_irq(unsigned int irq, struct irq_desc *desc) 56static void leon_handle_ext_irq(unsigned int irq, struct irq_desc *desc)
57{ 57{
58 unsigned int eirq; 58 unsigned int eirq;
59 struct irq_bucket *p;
59 int cpu = sparc_leon3_cpuid(); 60 int cpu = sparc_leon3_cpuid();
60 61
61 eirq = leon_eirq_get(cpu); 62 eirq = leon_eirq_get(cpu);
62 if ((eirq & 0x10) && irq_map[eirq]->irq) /* bit4 tells if IRQ happened */ 63 p = irq_map[eirq];
63 generic_handle_irq(irq_map[eirq]->irq); 64 if ((eirq & 0x10) && p && p->irq) /* bit4 tells if IRQ happened */
65 generic_handle_irq(p->irq);
64} 66}
65 67
66/* The extended IRQ controller has been found, this function registers it */ 68/* The extended IRQ controller has been found, this function registers it */
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 885a8af74064..b5c38faa4ead 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1762,15 +1762,25 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
1762 1762
1763 ufp = regs->u_regs[UREG_I6] & 0xffffffffUL; 1763 ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;
1764 do { 1764 do {
1765 struct sparc_stackf32 *usf, sf;
1766 unsigned long pc; 1765 unsigned long pc;
1767 1766
1768 usf = (struct sparc_stackf32 *) ufp; 1767 if (thread32_stack_is_64bit(ufp)) {
1769 if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) 1768 struct sparc_stackf *usf, sf;
1770 break;
1771 1769
1772 pc = sf.callers_pc; 1770 ufp += STACK_BIAS;
1773 ufp = (unsigned long)sf.fp; 1771 usf = (struct sparc_stackf *) ufp;
1772 if (__copy_from_user_inatomic(&sf, usf, sizeof(sf)))
1773 break;
1774 pc = sf.callers_pc & 0xffffffff;
1775 ufp = ((unsigned long) sf.fp) & 0xffffffff;
1776 } else {
1777 struct sparc_stackf32 *usf, sf;
1778 usf = (struct sparc_stackf32 *) ufp;
1779 if (__copy_from_user_inatomic(&sf, usf, sizeof(sf)))
1780 break;
1781 pc = sf.callers_pc;
1782 ufp = (unsigned long)sf.fp;
1783 }
1774 perf_callchain_store(entry, pc); 1784 perf_callchain_store(entry, pc);
1775 } while (entry->nr < PERF_MAX_STACK_DEPTH); 1785 } while (entry->nr < PERF_MAX_STACK_DEPTH);
1776} 1786}
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index 487bffb36f5e..bf4c6addce7b 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -316,9 +316,10 @@ asmlinkage int sparc_do_fork(unsigned long clone_flags,
316 * XXX See comment above sys_vfork in sparc64. todo. 316 * XXX See comment above sys_vfork in sparc64. todo.
317 */ 317 */
318extern void ret_from_fork(void); 318extern void ret_from_fork(void);
319extern void ret_from_kernel_thread(void);
319 320
320int copy_thread(unsigned long clone_flags, unsigned long sp, 321int copy_thread(unsigned long clone_flags, unsigned long sp,
321 unsigned long unused, 322 unsigned long arg,
322 struct task_struct *p, struct pt_regs *regs) 323 struct task_struct *p, struct pt_regs *regs)
323{ 324{
324 struct thread_info *ti = task_thread_info(p); 325 struct thread_info *ti = task_thread_info(p);
@@ -336,16 +337,13 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
336 } 337 }
337 338
338 /* 339 /*
339 * p->thread_info new_stack childregs 340 * p->thread_info new_stack childregs stack bottom
340 * ! ! ! {if(PSR_PS) } 341 * ! ! ! !
341 * V V (stk.fr.) V (pt_regs) { (stk.fr.) } 342 * V V (stk.fr.) V (pt_regs) V
342 * +----- - - - - - ------+===========+============={+==========}+ 343 * +----- - - - - - ------+===========+=============+
343 */ 344 */
344 new_stack = task_stack_page(p) + THREAD_SIZE; 345 new_stack = task_stack_page(p) + THREAD_SIZE;
345 if (regs->psr & PSR_PS)
346 new_stack -= STACKFRAME_SZ;
347 new_stack -= STACKFRAME_SZ + TRACEREG_SZ; 346 new_stack -= STACKFRAME_SZ + TRACEREG_SZ;
348 memcpy(new_stack, (char *)regs - STACKFRAME_SZ, STACKFRAME_SZ + TRACEREG_SZ);
349 childregs = (struct pt_regs *) (new_stack + STACKFRAME_SZ); 347 childregs = (struct pt_regs *) (new_stack + STACKFRAME_SZ);
350 348
351 /* 349 /*
@@ -356,55 +354,58 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
356 * Thus, kpsr|=PSR_PIL. 354 * Thus, kpsr|=PSR_PIL.
357 */ 355 */
358 ti->ksp = (unsigned long) new_stack; 356 ti->ksp = (unsigned long) new_stack;
357 p->thread.kregs = childregs;
358
359 if (unlikely(p->flags & PF_KTHREAD)) {
360 extern int nwindows;
361 unsigned long psr;
362 memset(new_stack, 0, STACKFRAME_SZ + TRACEREG_SZ);
363 p->thread.flags |= SPARC_FLAG_KTHREAD;
364 p->thread.current_ds = KERNEL_DS;
365 ti->kpc = (((unsigned long) ret_from_kernel_thread) - 0x8);
366 childregs->u_regs[UREG_G1] = sp; /* function */
367 childregs->u_regs[UREG_G2] = arg;
368 psr = childregs->psr = get_psr();
369 ti->kpsr = psr | PSR_PIL;
370 ti->kwim = 1 << (((psr & PSR_CWP) + 1) % nwindows);
371 return 0;
372 }
373 memcpy(new_stack, (char *)regs - STACKFRAME_SZ, STACKFRAME_SZ + TRACEREG_SZ);
374 childregs->u_regs[UREG_FP] = sp;
375 p->thread.flags &= ~SPARC_FLAG_KTHREAD;
376 p->thread.current_ds = USER_DS;
359 ti->kpc = (((unsigned long) ret_from_fork) - 0x8); 377 ti->kpc = (((unsigned long) ret_from_fork) - 0x8);
360 ti->kpsr = current->thread.fork_kpsr | PSR_PIL; 378 ti->kpsr = current->thread.fork_kpsr | PSR_PIL;
361 ti->kwim = current->thread.fork_kwim; 379 ti->kwim = current->thread.fork_kwim;
362 380
363 if(regs->psr & PSR_PS) { 381 if (sp != regs->u_regs[UREG_FP]) {
364 extern struct pt_regs fake_swapper_regs; 382 struct sparc_stackf __user *childstack;
383 struct sparc_stackf __user *parentstack;
365 384
366 p->thread.kregs = &fake_swapper_regs; 385 /*
367 new_stack += STACKFRAME_SZ + TRACEREG_SZ; 386 * This is a clone() call with supplied user stack.
368 childregs->u_regs[UREG_FP] = (unsigned long) new_stack; 387 * Set some valid stack frames to give to the child.
369 p->thread.flags |= SPARC_FLAG_KTHREAD; 388 */
370 p->thread.current_ds = KERNEL_DS; 389 childstack = (struct sparc_stackf __user *)
371 memcpy(new_stack, (void *)regs->u_regs[UREG_FP], STACKFRAME_SZ); 390 (sp & ~0xfUL);
372 childregs->u_regs[UREG_G6] = (unsigned long) ti; 391 parentstack = (struct sparc_stackf __user *)
373 } else { 392 regs->u_regs[UREG_FP];
374 p->thread.kregs = childregs;
375 childregs->u_regs[UREG_FP] = sp;
376 p->thread.flags &= ~SPARC_FLAG_KTHREAD;
377 p->thread.current_ds = USER_DS;
378
379 if (sp != regs->u_regs[UREG_FP]) {
380 struct sparc_stackf __user *childstack;
381 struct sparc_stackf __user *parentstack;
382
383 /*
384 * This is a clone() call with supplied user stack.
385 * Set some valid stack frames to give to the child.
386 */
387 childstack = (struct sparc_stackf __user *)
388 (sp & ~0xfUL);
389 parentstack = (struct sparc_stackf __user *)
390 regs->u_regs[UREG_FP];
391 393
392#if 0 394#if 0
393 printk("clone: parent stack:\n"); 395 printk("clone: parent stack:\n");
394 show_stackframe(parentstack); 396 show_stackframe(parentstack);
395#endif 397#endif
396 398
397 childstack = clone_stackframe(childstack, parentstack); 399 childstack = clone_stackframe(childstack, parentstack);
398 if (!childstack) 400 if (!childstack)
399 return -EFAULT; 401 return -EFAULT;
400 402
401#if 0 403#if 0
402 printk("clone: child stack:\n"); 404 printk("clone: child stack:\n");
403 show_stackframe(childstack); 405 show_stackframe(childstack);
404#endif 406#endif
405 407
406 childregs->u_regs[UREG_FP] = (unsigned long)childstack; 408 childregs->u_regs[UREG_FP] = (unsigned long)childstack;
407 }
408 } 409 }
409 410
410#ifdef CONFIG_SMP 411#ifdef CONFIG_SMP
@@ -475,69 +476,6 @@ int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs)
475 return 1; 476 return 1;
476} 477}
477 478
478/*
479 * sparc_execve() executes a new program after the asm stub has set
480 * things up for us. This should basically do what I want it to.
481 */
482asmlinkage int sparc_execve(struct pt_regs *regs)
483{
484 int error, base = 0;
485 struct filename *filename;
486
487 /* Check for indirect call. */
488 if(regs->u_regs[UREG_G1] == 0)
489 base = 1;
490
491 filename = getname((char __user *)regs->u_regs[base + UREG_I0]);
492 error = PTR_ERR(filename);
493 if(IS_ERR(filename))
494 goto out;
495 error = do_execve(filename->name,
496 (const char __user *const __user *)
497 regs->u_regs[base + UREG_I1],
498 (const char __user *const __user *)
499 regs->u_regs[base + UREG_I2],
500 regs);
501 putname(filename);
502out:
503 return error;
504}
505
506/*
507 * This is the mechanism for creating a new kernel thread.
508 *
509 * NOTE! Only a kernel-only process(ie the swapper or direct descendants
510 * who haven't done an "execve()") should use this: it will work within
511 * a system call from a "real" process, but the process memory space will
512 * not be freed until both the parent and the child have exited.
513 */
514pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
515{
516 long retval;
517
518 __asm__ __volatile__("mov %4, %%g2\n\t" /* Set aside fn ptr... */
519 "mov %5, %%g3\n\t" /* and arg. */
520 "mov %1, %%g1\n\t"
521 "mov %2, %%o0\n\t" /* Clone flags. */
522 "mov 0, %%o1\n\t" /* usp arg == 0 */
523 "t 0x10\n\t" /* Linux/Sparc clone(). */
524 "cmp %%o1, 0\n\t"
525 "be 1f\n\t" /* The parent, just return. */
526 " nop\n\t" /* Delay slot. */
527 "jmpl %%g2, %%o7\n\t" /* Call the function. */
528 " mov %%g3, %%o0\n\t" /* Get back the arg in delay. */
529 "mov %3, %%g1\n\t"
530 "t 0x10\n\t" /* Linux/Sparc exit(). */
531 /* Notreached by child. */
532 "1: mov %%o0, %0\n\t" :
533 "=r" (retval) :
534 "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED),
535 "i" (__NR_exit), "r" (fn), "r" (arg) :
536 "g1", "g2", "g3", "o0", "o1", "memory", "cc");
537 return retval;
538}
539EXPORT_SYMBOL(kernel_thread);
540
541unsigned long get_wchan(struct task_struct *task) 479unsigned long get_wchan(struct task_struct *task)
542{ 480{
543 unsigned long pc, fp, bias = 0; 481 unsigned long pc, fp, bias = 0;
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index d778248ef3f8..dff54f46728d 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -452,13 +452,16 @@ void flush_thread(void)
452/* It's a bit more tricky when 64-bit tasks are involved... */ 452/* It's a bit more tricky when 64-bit tasks are involved... */
453static unsigned long clone_stackframe(unsigned long csp, unsigned long psp) 453static unsigned long clone_stackframe(unsigned long csp, unsigned long psp)
454{ 454{
455 bool stack_64bit = test_thread_64bit_stack(psp);
455 unsigned long fp, distance, rval; 456 unsigned long fp, distance, rval;
456 457
457 if (!(test_thread_flag(TIF_32BIT))) { 458 if (stack_64bit) {
458 csp += STACK_BIAS; 459 csp += STACK_BIAS;
459 psp += STACK_BIAS; 460 psp += STACK_BIAS;
460 __get_user(fp, &(((struct reg_window __user *)psp)->ins[6])); 461 __get_user(fp, &(((struct reg_window __user *)psp)->ins[6]));
461 fp += STACK_BIAS; 462 fp += STACK_BIAS;
463 if (test_thread_flag(TIF_32BIT))
464 fp &= 0xffffffff;
462 } else 465 } else
463 __get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6])); 466 __get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6]));
464 467
@@ -472,7 +475,7 @@ static unsigned long clone_stackframe(unsigned long csp, unsigned long psp)
472 rval = (csp - distance); 475 rval = (csp - distance);
473 if (copy_in_user((void __user *) rval, (void __user *) psp, distance)) 476 if (copy_in_user((void __user *) rval, (void __user *) psp, distance))
474 rval = 0; 477 rval = 0;
475 else if (test_thread_flag(TIF_32BIT)) { 478 else if (!stack_64bit) {
476 if (put_user(((u32)csp), 479 if (put_user(((u32)csp),
477 &(((struct reg_window32 __user *)rval)->ins[6]))) 480 &(((struct reg_window32 __user *)rval)->ins[6])))
478 rval = 0; 481 rval = 0;
@@ -507,18 +510,18 @@ void synchronize_user_stack(void)
507 510
508 flush_user_windows(); 511 flush_user_windows();
509 if ((window = get_thread_wsaved()) != 0) { 512 if ((window = get_thread_wsaved()) != 0) {
510 int winsize = sizeof(struct reg_window);
511 int bias = 0;
512
513 if (test_thread_flag(TIF_32BIT))
514 winsize = sizeof(struct reg_window32);
515 else
516 bias = STACK_BIAS;
517
518 window -= 1; 513 window -= 1;
519 do { 514 do {
520 unsigned long sp = (t->rwbuf_stkptrs[window] + bias);
521 struct reg_window *rwin = &t->reg_window[window]; 515 struct reg_window *rwin = &t->reg_window[window];
516 int winsize = sizeof(struct reg_window);
517 unsigned long sp;
518
519 sp = t->rwbuf_stkptrs[window];
520
521 if (test_thread_64bit_stack(sp))
522 sp += STACK_BIAS;
523 else
524 winsize = sizeof(struct reg_window32);
522 525
523 if (!copy_to_user((char __user *)sp, rwin, winsize)) { 526 if (!copy_to_user((char __user *)sp, rwin, winsize)) {
524 shift_window_buffer(window, get_thread_wsaved() - 1, t); 527 shift_window_buffer(window, get_thread_wsaved() - 1, t);
@@ -544,13 +547,6 @@ void fault_in_user_windows(void)
544{ 547{
545 struct thread_info *t = current_thread_info(); 548 struct thread_info *t = current_thread_info();
546 unsigned long window; 549 unsigned long window;
547 int winsize = sizeof(struct reg_window);
548 int bias = 0;
549
550 if (test_thread_flag(TIF_32BIT))
551 winsize = sizeof(struct reg_window32);
552 else
553 bias = STACK_BIAS;
554 550
555 flush_user_windows(); 551 flush_user_windows();
556 window = get_thread_wsaved(); 552 window = get_thread_wsaved();
@@ -558,8 +554,16 @@ void fault_in_user_windows(void)
558 if (likely(window != 0)) { 554 if (likely(window != 0)) {
559 window -= 1; 555 window -= 1;
560 do { 556 do {
561 unsigned long sp = (t->rwbuf_stkptrs[window] + bias);
562 struct reg_window *rwin = &t->reg_window[window]; 557 struct reg_window *rwin = &t->reg_window[window];
558 int winsize = sizeof(struct reg_window);
559 unsigned long sp;
560
561 sp = t->rwbuf_stkptrs[window];
562
563 if (test_thread_64bit_stack(sp))
564 sp += STACK_BIAS;
565 else
566 winsize = sizeof(struct reg_window32);
563 567
564 if (unlikely(sp & 0x7UL)) 568 if (unlikely(sp & 0x7UL))
565 stack_unaligned(sp); 569 stack_unaligned(sp);
@@ -618,64 +622,55 @@ asmlinkage long sparc_do_fork(unsigned long clone_flags,
618 * Child --> %o0 == parents pid, %o1 == 1 622 * Child --> %o0 == parents pid, %o1 == 1
619 */ 623 */
620int copy_thread(unsigned long clone_flags, unsigned long sp, 624int copy_thread(unsigned long clone_flags, unsigned long sp,
621 unsigned long unused, 625 unsigned long arg,
622 struct task_struct *p, struct pt_regs *regs) 626 struct task_struct *p, struct pt_regs *regs)
623{ 627{
624 struct thread_info *t = task_thread_info(p); 628 struct thread_info *t = task_thread_info(p);
625 struct sparc_stackf *parent_sf; 629 struct sparc_stackf *parent_sf;
626 unsigned long child_stack_sz; 630 unsigned long child_stack_sz;
627 char *child_trap_frame; 631 char *child_trap_frame;
628 int kernel_thread;
629
630 kernel_thread = (regs->tstate & TSTATE_PRIV) ? 1 : 0;
631 parent_sf = ((struct sparc_stackf *) regs) - 1;
632 632
633 /* Calculate offset to stack_frame & pt_regs */ 633 /* Calculate offset to stack_frame & pt_regs */
634 child_stack_sz = ((STACKFRAME_SZ + TRACEREG_SZ) + 634 child_stack_sz = (STACKFRAME_SZ + TRACEREG_SZ);
635 (kernel_thread ? STACKFRAME_SZ : 0));
636 child_trap_frame = (task_stack_page(p) + 635 child_trap_frame = (task_stack_page(p) +
637 (THREAD_SIZE - child_stack_sz)); 636 (THREAD_SIZE - child_stack_sz));
638 memcpy(child_trap_frame, parent_sf, child_stack_sz);
639 637
640 t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) |
641 (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) |
642 (((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT);
643 t->new_child = 1; 638 t->new_child = 1;
644 t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS; 639 t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS;
645 t->kregs = (struct pt_regs *) (child_trap_frame + 640 t->kregs = (struct pt_regs *) (child_trap_frame +
646 sizeof(struct sparc_stackf)); 641 sizeof(struct sparc_stackf));
647 t->fpsaved[0] = 0; 642 t->fpsaved[0] = 0;
648 643
649 if (kernel_thread) { 644 if (unlikely(p->flags & PF_KTHREAD)) {
650 struct sparc_stackf *child_sf = (struct sparc_stackf *) 645 memset(child_trap_frame, 0, child_stack_sz);
651 (child_trap_frame + (STACKFRAME_SZ + TRACEREG_SZ)); 646 __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP] =
652 647 (current_pt_regs()->tstate + 1) & TSTATE_CWP;
653 /* Zero terminate the stack backtrace. */ 648 t->current_ds = ASI_P;
654 child_sf->fp = NULL; 649 t->kregs->u_regs[UREG_G1] = sp; /* function */
655 t->kregs->u_regs[UREG_FP] = 650 t->kregs->u_regs[UREG_G2] = arg;
656 ((unsigned long) child_sf) - STACK_BIAS; 651 return 0;
652 }
657 653
658 t->flags |= ((long)ASI_P << TI_FLAG_CURRENT_DS_SHIFT); 654 parent_sf = ((struct sparc_stackf *) regs) - 1;
659 t->kregs->u_regs[UREG_G6] = (unsigned long) t; 655 memcpy(child_trap_frame, parent_sf, child_stack_sz);
660 t->kregs->u_regs[UREG_G4] = (unsigned long) t->task; 656 if (t->flags & _TIF_32BIT) {
661 } else { 657 sp &= 0x00000000ffffffffUL;
662 if (t->flags & _TIF_32BIT) { 658 regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
663 sp &= 0x00000000ffffffffUL;
664 regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
665 }
666 t->kregs->u_regs[UREG_FP] = sp;
667 t->flags |= ((long)ASI_AIUS << TI_FLAG_CURRENT_DS_SHIFT);
668 if (sp != regs->u_regs[UREG_FP]) {
669 unsigned long csp;
670
671 csp = clone_stackframe(sp, regs->u_regs[UREG_FP]);
672 if (!csp)
673 return -EFAULT;
674 t->kregs->u_regs[UREG_FP] = csp;
675 }
676 if (t->utraps)
677 t->utraps[0]++;
678 } 659 }
660 t->kregs->u_regs[UREG_FP] = sp;
661 __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP] =
662 (regs->tstate + 1) & TSTATE_CWP;
663 t->current_ds = ASI_AIUS;
664 if (sp != regs->u_regs[UREG_FP]) {
665 unsigned long csp;
666
667 csp = clone_stackframe(sp, regs->u_regs[UREG_FP]);
668 if (!csp)
669 return -EFAULT;
670 t->kregs->u_regs[UREG_FP] = csp;
671 }
672 if (t->utraps)
673 t->utraps[0]++;
679 674
680 /* Set the return value for the child. */ 675 /* Set the return value for the child. */
681 t->kregs->u_regs[UREG_I0] = current->pid; 676 t->kregs->u_regs[UREG_I0] = current->pid;
@@ -690,45 +685,6 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
690 return 0; 685 return 0;
691} 686}
692 687
693/*
694 * This is the mechanism for creating a new kernel thread.
695 *
696 * NOTE! Only a kernel-only process(ie the swapper or direct descendants
697 * who haven't done an "execve()") should use this: it will work within
698 * a system call from a "real" process, but the process memory space will
699 * not be freed until both the parent and the child have exited.
700 */
701pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
702{
703 long retval;
704
705 /* If the parent runs before fn(arg) is called by the child,
706 * the input registers of this function can be clobbered.
707 * So we stash 'fn' and 'arg' into global registers which
708 * will not be modified by the parent.
709 */
710 __asm__ __volatile__("mov %4, %%g2\n\t" /* Save FN into global */
711 "mov %5, %%g3\n\t" /* Save ARG into global */
712 "mov %1, %%g1\n\t" /* Clone syscall nr. */
713 "mov %2, %%o0\n\t" /* Clone flags. */
714 "mov 0, %%o1\n\t" /* usp arg == 0 */
715 "t 0x6d\n\t" /* Linux/Sparc clone(). */
716 "brz,a,pn %%o1, 1f\n\t" /* Parent, just return. */
717 " mov %%o0, %0\n\t"
718 "jmpl %%g2, %%o7\n\t" /* Call the function. */
719 " mov %%g3, %%o0\n\t" /* Set arg in delay. */
720 "mov %3, %%g1\n\t"
721 "t 0x6d\n\t" /* Linux/Sparc exit(). */
722 /* Notreached by child. */
723 "1:" :
724 "=r" (retval) :
725 "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED),
726 "i" (__NR_exit), "r" (fn), "r" (arg) :
727 "g1", "g2", "g3", "o0", "o1", "memory", "cc");
728 return retval;
729}
730EXPORT_SYMBOL(kernel_thread);
731
732typedef struct { 688typedef struct {
733 union { 689 union {
734 unsigned int pr_regs[32]; 690 unsigned int pr_regs[32];
@@ -795,41 +751,6 @@ int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs)
795} 751}
796EXPORT_SYMBOL(dump_fpu); 752EXPORT_SYMBOL(dump_fpu);
797 753
798/*
799 * sparc_execve() executes a new program after the asm stub has set
800 * things up for us. This should basically do what I want it to.
801 */
802asmlinkage int sparc_execve(struct pt_regs *regs)
803{
804 int error, base = 0;
805 struct filename *filename;
806
807 /* User register window flush is done by entry.S */
808
809 /* Check for indirect call. */
810 if (regs->u_regs[UREG_G1] == 0)
811 base = 1;
812
813 filename = getname((char __user *)regs->u_regs[base + UREG_I0]);
814 error = PTR_ERR(filename);
815 if (IS_ERR(filename))
816 goto out;
817 error = do_execve(filename->name,
818 (const char __user *const __user *)
819 regs->u_regs[base + UREG_I1],
820 (const char __user *const __user *)
821 regs->u_regs[base + UREG_I2], regs);
822 putname(filename);
823 if (!error) {
824 fprs_write(0);
825 current_thread_info()->xfsr[0] = 0;
826 current_thread_info()->fpsaved[0] = 0;
827 regs->tstate &= ~TSTATE_PEF;
828 }
829out:
830 return error;
831}
832
833unsigned long get_wchan(struct task_struct *task) 754unsigned long get_wchan(struct task_struct *task)
834{ 755{
835 unsigned long pc, fp, bias = 0; 756 unsigned long pc, fp, bias = 0;
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index 484dabac7045..7ff45e4ba681 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -151,7 +151,7 @@ static int regwindow64_get(struct task_struct *target,
151{ 151{
152 unsigned long rw_addr = regs->u_regs[UREG_I6]; 152 unsigned long rw_addr = regs->u_regs[UREG_I6];
153 153
154 if (test_tsk_thread_flag(current, TIF_32BIT)) { 154 if (!test_thread_64bit_stack(rw_addr)) {
155 struct reg_window32 win32; 155 struct reg_window32 win32;
156 int i; 156 int i;
157 157
@@ -176,7 +176,7 @@ static int regwindow64_set(struct task_struct *target,
176{ 176{
177 unsigned long rw_addr = regs->u_regs[UREG_I6]; 177 unsigned long rw_addr = regs->u_regs[UREG_I6];
178 178
179 if (test_tsk_thread_flag(current, TIF_32BIT)) { 179 if (!test_thread_64bit_stack(rw_addr)) {
180 struct reg_window32 win32; 180 struct reg_window32 win32;
181 int i; 181 int i;
182 182
diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
index 0800e71d8a88..0eaf0059aaef 100644
--- a/arch/sparc/kernel/setup_64.c
+++ b/arch/sparc/kernel/setup_64.c
@@ -316,6 +316,25 @@ static void __init popc_patch(void)
316 } 316 }
317} 317}
318 318
319static void __init pause_patch(void)
320{
321 struct pause_patch_entry *p;
322
323 p = &__pause_3insn_patch;
324 while (p < &__pause_3insn_patch_end) {
325 unsigned long i, addr = p->addr;
326
327 for (i = 0; i < 3; i++) {
328 *(unsigned int *) (addr + (i * 4)) = p->insns[i];
329 wmb();
330 __asm__ __volatile__("flush %0"
331 : : "r" (addr + (i * 4)));
332 }
333
334 p++;
335 }
336}
337
319#ifdef CONFIG_SMP 338#ifdef CONFIG_SMP
320void __init boot_cpu_id_too_large(int cpu) 339void __init boot_cpu_id_too_large(int cpu)
321{ 340{
@@ -528,6 +547,8 @@ static void __init init_sparc64_elf_hwcap(void)
528 547
529 if (sparc64_elf_hwcap & AV_SPARC_POPC) 548 if (sparc64_elf_hwcap & AV_SPARC_POPC)
530 popc_patch(); 549 popc_patch();
550 if (sparc64_elf_hwcap & AV_SPARC_PAUSE)
551 pause_patch();
531} 552}
532 553
533void __init setup_arch(char **cmdline_p) 554void __init setup_arch(char **cmdline_p)
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c
index c3239811a1b5..03c7e929ec34 100644
--- a/arch/sparc/kernel/sys_sparc32.c
+++ b/arch/sparc/kernel/sys_sparc32.c
@@ -396,42 +396,6 @@ asmlinkage long compat_sys_rt_sigaction(int sig,
396 return ret; 396 return ret;
397} 397}
398 398
399/*
400 * sparc32_execve() executes a new program after the asm stub has set
401 * things up for us. This should basically do what I want it to.
402 */
403asmlinkage long sparc32_execve(struct pt_regs *regs)
404{
405 int error, base = 0;
406 struct filename *filename;
407
408 /* User register window flush is done by entry.S */
409
410 /* Check for indirect call. */
411 if ((u32)regs->u_regs[UREG_G1] == 0)
412 base = 1;
413
414 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
415 error = PTR_ERR(filename);
416 if (IS_ERR(filename))
417 goto out;
418
419 error = compat_do_execve(filename->name,
420 compat_ptr(regs->u_regs[base + UREG_I1]),
421 compat_ptr(regs->u_regs[base + UREG_I2]), regs);
422
423 putname(filename);
424
425 if (!error) {
426 fprs_write(0);
427 current_thread_info()->xfsr[0] = 0;
428 current_thread_info()->fpsaved[0] = 0;
429 regs->tstate &= ~TSTATE_PEF;
430 }
431out:
432 return error;
433}
434
435#ifdef CONFIG_MODULES 399#ifdef CONFIG_MODULES
436 400
437asmlinkage long sys32_init_module(void __user *umod, u32 len, 401asmlinkage long sys32_init_module(void __user *umod, u32 len,
diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
index 0c9b31b22e07..a8e6eb0a11d5 100644
--- a/arch/sparc/kernel/sys_sparc_32.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
@@ -258,27 +258,3 @@ out:
258 up_read(&uts_sem); 258 up_read(&uts_sem);
259 return err; 259 return err;
260} 260}
261
262/*
263 * Do a system call from kernel instead of calling sys_execve so we
264 * end up with proper pt_regs.
265 */
266int kernel_execve(const char *filename,
267 const char *const argv[],
268 const char *const envp[])
269{
270 long __res;
271 register long __g1 __asm__ ("g1") = __NR_execve;
272 register long __o0 __asm__ ("o0") = (long)(filename);
273 register long __o1 __asm__ ("o1") = (long)(argv);
274 register long __o2 __asm__ ("o2") = (long)(envp);
275 asm volatile ("t 0x10\n\t"
276 "bcc 1f\n\t"
277 "mov %%o0, %0\n\t"
278 "sub %%g0, %%o0, %0\n\t"
279 "1:\n\t"
280 : "=r" (__res), "=&r" (__o0)
281 : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)
282 : "cc");
283 return __res;
284}
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index 11c6c9603e71..51b85feb8b97 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -730,24 +730,7 @@ SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
730 return ret; 730 return ret;
731} 731}
732 732
733/* 733asmlinkage long sys_kern_features(void)
734 * Do a system call from kernel instead of calling sys_execve so we
735 * end up with proper pt_regs.
736 */
737int kernel_execve(const char *filename,
738 const char *const argv[],
739 const char *const envp[])
740{ 734{
741 long __res; 735 return KERN_FEATURE_MIXED_MODE_STACK;
742 register long __g1 __asm__ ("g1") = __NR_execve;
743 register long __o0 __asm__ ("o0") = (long)(filename);
744 register long __o1 __asm__ ("o1") = (long)(argv);
745 register long __o2 __asm__ ("o2") = (long)(envp);
746 asm volatile ("t 0x6d\n\t"
747 "sub %%g0, %%o0, %0\n\t"
748 "movcc %%xcc, %%o0, %0\n\t"
749 : "=r" (__res), "=&r" (__o0)
750 : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)
751 : "cc");
752 return __res;
753} 736}
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
index 7f5f65d0b3fd..2ef41e67f0be 100644
--- a/arch/sparc/kernel/syscalls.S
+++ b/arch/sparc/kernel/syscalls.S
@@ -1,23 +1,19 @@
1 /* SunOS's execv() call only specifies the argv argument, the 1 /* SunOS's execv() call only specifies the argv argument, the
2 * environment settings are the same as the calling processes. 2 * environment settings are the same as the calling processes.
3 */ 3 */
4sys_execve: 4sys64_execve:
5 sethi %hi(sparc_execve), %g1 5 set sys_execve, %g1
6 ba,pt %xcc, execve_merge 6 jmpl %g1, %g0
7 or %g1, %lo(sparc_execve), %g1 7 flushw
8 8
9#ifdef CONFIG_COMPAT 9#ifdef CONFIG_COMPAT
10sunos_execv: 10sunos_execv:
11 stx %g0, [%sp + PTREGS_OFF + PT_V9_I2] 11 mov %g0, %o2
12sys32_execve: 12sys32_execve:
13 sethi %hi(sparc32_execve), %g1 13 set compat_sys_execve, %g1
14 or %g1, %lo(sparc32_execve), %g1
15#endif
16
17execve_merge:
18 flushw
19 jmpl %g1, %g0 14 jmpl %g1, %g0
20 add %sp, PTREGS_OFF, %o0 15 flushw
16#endif
21 17
22 .align 32 18 .align 32
23sys_sparc_pipe: 19sys_sparc_pipe:
@@ -112,11 +108,16 @@ sys_clone:
112ret_from_syscall: 108ret_from_syscall:
113 /* Clear current_thread_info()->new_child. */ 109 /* Clear current_thread_info()->new_child. */
114 stb %g0, [%g6 + TI_NEW_CHILD] 110 stb %g0, [%g6 + TI_NEW_CHILD]
115 ldx [%g6 + TI_FLAGS], %l0
116 call schedule_tail 111 call schedule_tail
117 mov %g7, %o0 112 mov %g7, %o0
113 ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0
114 brnz,pt %o0, ret_sys_call
115 ldx [%g6 + TI_FLAGS], %l0
116 ldx [%sp + PTREGS_OFF + PT_V9_G1], %l1
117 call %l1
118 ldx [%sp + PTREGS_OFF + PT_V9_G2], %o0
118 ba,pt %xcc, ret_sys_call 119 ba,pt %xcc, ret_sys_call
119 ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0 120 mov 0, %o0
120 121
121 .globl sparc_exit 122 .globl sparc_exit
122 .type sparc_exit,#function 123 .type sparc_exit,#function
@@ -222,7 +223,6 @@ ret_sys_call:
222 ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc 223 ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
223 224
2242: 2252:
225 stb %g0, [%g6 + TI_SYS_NOERROR]
226 /* System call success, clear Carry condition code. */ 226 /* System call success, clear Carry condition code. */
227 andn %g3, %g2, %g3 227 andn %g3, %g2, %g3
2283: 2283:
diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
index 63402f9e9f51..5147f574f125 100644
--- a/arch/sparc/kernel/systbls_32.S
+++ b/arch/sparc/kernel/systbls_32.S
@@ -85,3 +85,4 @@ sys_call_table:
85/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init 85/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init
86/*330*/ .long sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime 86/*330*/ .long sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
87/*335*/ .long sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev 87/*335*/ .long sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev
88/*340*/ .long sys_ni_syscall, sys_kcmp
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
index 3a58e0d66f51..ebb7f5fc58fb 100644
--- a/arch/sparc/kernel/systbls_64.S
+++ b/arch/sparc/kernel/systbls_64.S
@@ -86,6 +86,7 @@ sys_call_table32:
86 .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg, sys_fanotify_init 86 .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg, sys_fanotify_init
87/*330*/ .word sys32_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, compat_sys_open_by_handle_at, compat_sys_clock_adjtime 87/*330*/ .word sys32_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, compat_sys_open_by_handle_at, compat_sys_clock_adjtime
88 .word sys_syncfs, compat_sys_sendmmsg, sys_setns, compat_sys_process_vm_readv, compat_sys_process_vm_writev 88 .word sys_syncfs, compat_sys_sendmmsg, sys_setns, compat_sys_process_vm_readv, compat_sys_process_vm_writev
89/*340*/ .word sys_kern_features, sys_kcmp
89 90
90#endif /* CONFIG_COMPAT */ 91#endif /* CONFIG_COMPAT */
91 92
@@ -106,7 +107,7 @@ sys_call_table:
106/*40*/ .word sys_newlstat, sys_dup, sys_sparc_pipe, sys_times, sys_nis_syscall 107/*40*/ .word sys_newlstat, sys_dup, sys_sparc_pipe, sys_times, sys_nis_syscall
107 .word sys_umount, sys_setgid, sys_getgid, sys_signal, sys_geteuid 108 .word sys_umount, sys_setgid, sys_getgid, sys_signal, sys_geteuid
108/*50*/ .word sys_getegid, sys_acct, sys_memory_ordering, sys_nis_syscall, sys_ioctl 109/*50*/ .word sys_getegid, sys_acct, sys_memory_ordering, sys_nis_syscall, sys_ioctl
109 .word sys_reboot, sys_nis_syscall, sys_symlink, sys_readlink, sys_execve 110 .word sys_reboot, sys_nis_syscall, sys_symlink, sys_readlink, sys64_execve
110/*60*/ .word sys_umask, sys_chroot, sys_newfstat, sys_fstat64, sys_getpagesize 111/*60*/ .word sys_umask, sys_chroot, sys_newfstat, sys_fstat64, sys_getpagesize
111 .word sys_msync, sys_vfork, sys_pread64, sys_pwrite64, sys_nis_syscall 112 .word sys_msync, sys_vfork, sys_pread64, sys_pwrite64, sys_nis_syscall
112/*70*/ .word sys_nis_syscall, sys_mmap, sys_nis_syscall, sys_64_munmap, sys_mprotect 113/*70*/ .word sys_nis_syscall, sys_mmap, sys_nis_syscall, sys_64_munmap, sys_mprotect
@@ -163,3 +164,4 @@ sys_call_table:
163 .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init 164 .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init
164/*330*/ .word sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime 165/*330*/ .word sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
165 .word sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev 166 .word sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev
167/*340*/ .word sys_kern_features, sys_kcmp
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index b66a77968f35..e7ecf1507d90 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -2688,8 +2688,8 @@ void __init trap_init(void)
2688 TI_PRE_COUNT != offsetof(struct thread_info, 2688 TI_PRE_COUNT != offsetof(struct thread_info,
2689 preempt_count) || 2689 preempt_count) ||
2690 TI_NEW_CHILD != offsetof(struct thread_info, new_child) || 2690 TI_NEW_CHILD != offsetof(struct thread_info, new_child) ||
2691 TI_SYS_NOERROR != offsetof(struct thread_info, 2691 TI_CURRENT_DS != offsetof(struct thread_info,
2692 syscall_noerror) || 2692 current_ds) ||
2693 TI_RESTART_BLOCK != offsetof(struct thread_info, 2693 TI_RESTART_BLOCK != offsetof(struct thread_info,
2694 restart_block) || 2694 restart_block) ||
2695 TI_KUNA_REGS != offsetof(struct thread_info, 2695 TI_KUNA_REGS != offsetof(struct thread_info,
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index f81d038f7340..8201c25e7669 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -113,21 +113,24 @@ static inline long sign_extend_imm13(long imm)
113 113
114static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs) 114static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
115{ 115{
116 unsigned long value; 116 unsigned long value, fp;
117 117
118 if (reg < 16) 118 if (reg < 16)
119 return (!reg ? 0 : regs->u_regs[reg]); 119 return (!reg ? 0 : regs->u_regs[reg]);
120
121 fp = regs->u_regs[UREG_FP];
122
120 if (regs->tstate & TSTATE_PRIV) { 123 if (regs->tstate & TSTATE_PRIV) {
121 struct reg_window *win; 124 struct reg_window *win;
122 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); 125 win = (struct reg_window *)(fp + STACK_BIAS);
123 value = win->locals[reg - 16]; 126 value = win->locals[reg - 16];
124 } else if (test_thread_flag(TIF_32BIT)) { 127 } else if (!test_thread_64bit_stack(fp)) {
125 struct reg_window32 __user *win32; 128 struct reg_window32 __user *win32;
126 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); 129 win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp));
127 get_user(value, &win32->locals[reg - 16]); 130 get_user(value, &win32->locals[reg - 16]);
128 } else { 131 } else {
129 struct reg_window __user *win; 132 struct reg_window __user *win;
130 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); 133 win = (struct reg_window __user *)(fp + STACK_BIAS);
131 get_user(value, &win->locals[reg - 16]); 134 get_user(value, &win->locals[reg - 16]);
132 } 135 }
133 return value; 136 return value;
@@ -135,19 +138,24 @@ static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
135 138
136static unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs) 139static unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs)
137{ 140{
141 unsigned long fp;
142
138 if (reg < 16) 143 if (reg < 16)
139 return &regs->u_regs[reg]; 144 return &regs->u_regs[reg];
145
146 fp = regs->u_regs[UREG_FP];
147
140 if (regs->tstate & TSTATE_PRIV) { 148 if (regs->tstate & TSTATE_PRIV) {
141 struct reg_window *win; 149 struct reg_window *win;
142 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); 150 win = (struct reg_window *)(fp + STACK_BIAS);
143 return &win->locals[reg - 16]; 151 return &win->locals[reg - 16];
144 } else if (test_thread_flag(TIF_32BIT)) { 152 } else if (!test_thread_64bit_stack(fp)) {
145 struct reg_window32 *win32; 153 struct reg_window32 *win32;
146 win32 = (struct reg_window32 *)((unsigned long)((u32)regs->u_regs[UREG_FP])); 154 win32 = (struct reg_window32 *)((unsigned long)((u32)fp));
147 return (unsigned long *)&win32->locals[reg - 16]; 155 return (unsigned long *)&win32->locals[reg - 16];
148 } else { 156 } else {
149 struct reg_window *win; 157 struct reg_window *win;
150 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); 158 win = (struct reg_window *)(fp + STACK_BIAS);
151 return &win->locals[reg - 16]; 159 return &win->locals[reg - 16];
152 } 160 }
153} 161}
@@ -392,13 +400,15 @@ int handle_popc(u32 insn, struct pt_regs *regs)
392 if (rd) 400 if (rd)
393 regs->u_regs[rd] = ret; 401 regs->u_regs[rd] = ret;
394 } else { 402 } else {
395 if (test_thread_flag(TIF_32BIT)) { 403 unsigned long fp = regs->u_regs[UREG_FP];
404
405 if (!test_thread_64bit_stack(fp)) {
396 struct reg_window32 __user *win32; 406 struct reg_window32 __user *win32;
397 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); 407 win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp));
398 put_user(ret, &win32->locals[rd - 16]); 408 put_user(ret, &win32->locals[rd - 16]);
399 } else { 409 } else {
400 struct reg_window __user *win; 410 struct reg_window __user *win;
401 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); 411 win = (struct reg_window __user *)(fp + STACK_BIAS);
402 put_user(ret, &win->locals[rd - 16]); 412 put_user(ret, &win->locals[rd - 16]);
403 } 413 }
404 } 414 }
@@ -554,7 +564,7 @@ void handle_ld_nf(u32 insn, struct pt_regs *regs)
554 reg[0] = 0; 564 reg[0] = 0;
555 if ((insn & 0x780000) == 0x180000) 565 if ((insn & 0x780000) == 0x180000)
556 reg[1] = 0; 566 reg[1] = 0;
557 } else if (test_thread_flag(TIF_32BIT)) { 567 } else if (!test_thread_64bit_stack(regs->u_regs[UREG_FP])) {
558 put_user(0, (int __user *) reg); 568 put_user(0, (int __user *) reg);
559 if ((insn & 0x780000) == 0x180000) 569 if ((insn & 0x780000) == 0x180000)
560 put_user(0, ((int __user *) reg) + 1); 570 put_user(0, ((int __user *) reg) + 1);
diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c
index 08e074b7eb6a..c096c624ac4d 100644
--- a/arch/sparc/kernel/visemul.c
+++ b/arch/sparc/kernel/visemul.c
@@ -149,21 +149,24 @@ static inline void maybe_flush_windows(unsigned int rs1, unsigned int rs2,
149 149
150static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs) 150static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
151{ 151{
152 unsigned long value; 152 unsigned long value, fp;
153 153
154 if (reg < 16) 154 if (reg < 16)
155 return (!reg ? 0 : regs->u_regs[reg]); 155 return (!reg ? 0 : regs->u_regs[reg]);
156
157 fp = regs->u_regs[UREG_FP];
158
156 if (regs->tstate & TSTATE_PRIV) { 159 if (regs->tstate & TSTATE_PRIV) {
157 struct reg_window *win; 160 struct reg_window *win;
158 win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); 161 win = (struct reg_window *)(fp + STACK_BIAS);
159 value = win->locals[reg - 16]; 162 value = win->locals[reg - 16];
160 } else if (test_thread_flag(TIF_32BIT)) { 163 } else if (!test_thread_64bit_stack(fp)) {
161 struct reg_window32 __user *win32; 164 struct reg_window32 __user *win32;
162 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); 165 win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp));
163 get_user(value, &win32->locals[reg - 16]); 166 get_user(value, &win32->locals[reg - 16]);
164 } else { 167 } else {
165 struct reg_window __user *win; 168 struct reg_window __user *win;
166 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); 169 win = (struct reg_window __user *)(fp + STACK_BIAS);
167 get_user(value, &win->locals[reg - 16]); 170 get_user(value, &win->locals[reg - 16]);
168 } 171 }
169 return value; 172 return value;
@@ -172,16 +175,18 @@ static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
172static inline unsigned long __user *__fetch_reg_addr_user(unsigned int reg, 175static inline unsigned long __user *__fetch_reg_addr_user(unsigned int reg,
173 struct pt_regs *regs) 176 struct pt_regs *regs)
174{ 177{
178 unsigned long fp = regs->u_regs[UREG_FP];
179
175 BUG_ON(reg < 16); 180 BUG_ON(reg < 16);
176 BUG_ON(regs->tstate & TSTATE_PRIV); 181 BUG_ON(regs->tstate & TSTATE_PRIV);
177 182
178 if (test_thread_flag(TIF_32BIT)) { 183 if (!test_thread_64bit_stack(fp)) {
179 struct reg_window32 __user *win32; 184 struct reg_window32 __user *win32;
180 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); 185 win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp));
181 return (unsigned long __user *)&win32->locals[reg - 16]; 186 return (unsigned long __user *)&win32->locals[reg - 16];
182 } else { 187 } else {
183 struct reg_window __user *win; 188 struct reg_window __user *win;
184 win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); 189 win = (struct reg_window __user *)(fp + STACK_BIAS);
185 return &win->locals[reg - 16]; 190 return &win->locals[reg - 16];
186 } 191 }
187} 192}
@@ -204,7 +209,7 @@ static void store_reg(struct pt_regs *regs, unsigned long val, unsigned long rd)
204 } else { 209 } else {
205 unsigned long __user *rd_user = __fetch_reg_addr_user(rd, regs); 210 unsigned long __user *rd_user = __fetch_reg_addr_user(rd, regs);
206 211
207 if (test_thread_flag(TIF_32BIT)) 212 if (!test_thread_64bit_stack(regs->u_regs[UREG_FP]))
208 __put_user((u32)val, (u32 __user *)rd_user); 213 __put_user((u32)val, (u32 __user *)rd_user);
209 else 214 else
210 __put_user(val, rd_user); 215 __put_user(val, rd_user);
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 89c2c29f154b..0bacceb19150 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -132,6 +132,11 @@ SECTIONS
132 *(.popc_6insn_patch) 132 *(.popc_6insn_patch)
133 __popc_6insn_patch_end = .; 133 __popc_6insn_patch_end = .;
134 } 134 }
135 .pause_3insn_patch : {
136 __pause_3insn_patch = .;
137 *(.pause_3insn_patch)
138 __pause_3insn_patch_end = .;
139 }
135 PERCPU_SECTION(SMP_CACHE_BYTES) 140 PERCPU_SECTION(SMP_CACHE_BYTES)
136 141
137 . = ALIGN(PAGE_SIZE); 142 . = ALIGN(PAGE_SIZE);
diff --git a/arch/sparc/kernel/winfixup.S b/arch/sparc/kernel/winfixup.S
index a6b0863c27df..1e67ce958369 100644
--- a/arch/sparc/kernel/winfixup.S
+++ b/arch/sparc/kernel/winfixup.S
@@ -43,6 +43,8 @@ spill_fixup_mna:
43spill_fixup_dax: 43spill_fixup_dax:
44 TRAP_LOAD_THREAD_REG(%g6, %g1) 44 TRAP_LOAD_THREAD_REG(%g6, %g1)
45 ldx [%g6 + TI_FLAGS], %g1 45 ldx [%g6 + TI_FLAGS], %g1
46 andcc %sp, 0x1, %g0
47 movne %icc, 0, %g1
46 andcc %g1, _TIF_32BIT, %g0 48 andcc %g1, _TIF_32BIT, %g0
47 ldub [%g6 + TI_WSAVED], %g1 49 ldub [%g6 + TI_WSAVED], %g1
48 sll %g1, 3, %g3 50 sll %g1, 3, %g3
diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S
index 4d502da3de78..85c233d0a340 100644
--- a/arch/sparc/lib/atomic_64.S
+++ b/arch/sparc/lib/atomic_64.S
@@ -1,6 +1,6 @@
1/* atomic.S: These things are too big to do inline. 1/* atomic.S: These things are too big to do inline.
2 * 2 *
3 * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net) 3 * Copyright (C) 1999, 2007 2012 David S. Miller (davem@davemloft.net)
4 */ 4 */
5 5
6#include <linux/linkage.h> 6#include <linux/linkage.h>
@@ -117,3 +117,17 @@ ENTRY(atomic64_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */
117 sub %g1, %o0, %o0 117 sub %g1, %o0, %o0
1182: BACKOFF_SPIN(%o2, %o3, 1b) 1182: BACKOFF_SPIN(%o2, %o3, 1b)
119ENDPROC(atomic64_sub_ret) 119ENDPROC(atomic64_sub_ret)
120
121ENTRY(atomic64_dec_if_positive) /* %o0 = atomic_ptr */
122 BACKOFF_SETUP(%o2)
1231: ldx [%o0], %g1
124 brlez,pn %g1, 3f
125 sub %g1, 1, %g7
126 casx [%o0], %g1, %g7
127 cmp %g1, %g7
128 bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
129 nop
1303: retl
131 sub %g1, 1, %o0
1322: BACKOFF_SPIN(%o2, %o3, 1b)
133ENDPROC(atomic64_dec_if_positive)
diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c
index ee31b884c61b..0c4e35e522fa 100644
--- a/arch/sparc/lib/ksyms.c
+++ b/arch/sparc/lib/ksyms.c
@@ -116,6 +116,7 @@ EXPORT_SYMBOL(atomic64_add);
116EXPORT_SYMBOL(atomic64_add_ret); 116EXPORT_SYMBOL(atomic64_add_ret);
117EXPORT_SYMBOL(atomic64_sub); 117EXPORT_SYMBOL(atomic64_sub);
118EXPORT_SYMBOL(atomic64_sub_ret); 118EXPORT_SYMBOL(atomic64_sub_ret);
119EXPORT_SYMBOL(atomic64_dec_if_positive);
119 120
120/* Atomic bit operations. */ 121/* Atomic bit operations. */
121EXPORT_SYMBOL(test_and_set_bit); 122EXPORT_SYMBOL(test_and_set_bit);
diff --git a/arch/sparc/math-emu/math_64.c b/arch/sparc/math-emu/math_64.c
index 1704068da928..034aadbff036 100644
--- a/arch/sparc/math-emu/math_64.c
+++ b/arch/sparc/math-emu/math_64.c
@@ -320,7 +320,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f, bool illegal_insn_trap)
320 XR = 0; 320 XR = 0;
321 else if (freg < 16) 321 else if (freg < 16)
322 XR = regs->u_regs[freg]; 322 XR = regs->u_regs[freg];
323 else if (test_thread_flag(TIF_32BIT)) { 323 else if (!test_thread_64bit_stack(regs->u_regs[UREG_FP])) {
324 struct reg_window32 __user *win32; 324 struct reg_window32 __user *win32;
325 flushw_user (); 325 flushw_user ();
326 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); 326 win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 9e28a118e6a4..85be1ca539b2 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -624,7 +624,7 @@ static void __init inherit_prom_mappings(void)
624void prom_world(int enter) 624void prom_world(int enter)
625{ 625{
626 if (!enter) 626 if (!enter)
627 set_fs((mm_segment_t) { get_thread_current_ds() }); 627 set_fs(get_fs());
628 628
629 __asm__ __volatile__("flushw"); 629 __asm__ __volatile__("flushw");
630} 630}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 15:33:13 -0500