diff options
Diffstat (limited to 'arch/sparc64/kernel/kprobes.c')
-rw-r--r-- | arch/sparc64/kernel/kprobes.c | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/arch/sparc64/kernel/kprobes.c b/arch/sparc64/kernel/kprobes.c index bbf11f85dab1..0d66d07c8c6e 100644 --- a/arch/sparc64/kernel/kprobes.c +++ b/arch/sparc64/kernel/kprobes.c | |||
@@ -8,6 +8,7 @@ | |||
8 | #include <linux/kprobes.h> | 8 | #include <linux/kprobes.h> |
9 | #include <asm/kdebug.h> | 9 | #include <asm/kdebug.h> |
10 | #include <asm/signal.h> | 10 | #include <asm/signal.h> |
11 | #include <asm/cacheflush.h> | ||
11 | 12 | ||
12 | /* We do not have hardware single-stepping on sparc64. | 13 | /* We do not have hardware single-stepping on sparc64. |
13 | * So we implement software single-stepping with breakpoint | 14 | * So we implement software single-stepping with breakpoint |
@@ -37,31 +38,31 @@ | |||
37 | * - Mark that we are no longer actively in a kprobe. | 38 | * - Mark that we are no longer actively in a kprobe. |
38 | */ | 39 | */ |
39 | 40 | ||
40 | int arch_prepare_kprobe(struct kprobe *p) | 41 | int __kprobes arch_prepare_kprobe(struct kprobe *p) |
41 | { | 42 | { |
42 | return 0; | 43 | return 0; |
43 | } | 44 | } |
44 | 45 | ||
45 | void arch_copy_kprobe(struct kprobe *p) | 46 | void __kprobes arch_copy_kprobe(struct kprobe *p) |
46 | { | 47 | { |
47 | p->ainsn.insn[0] = *p->addr; | 48 | p->ainsn.insn[0] = *p->addr; |
48 | p->ainsn.insn[1] = BREAKPOINT_INSTRUCTION_2; | 49 | p->ainsn.insn[1] = BREAKPOINT_INSTRUCTION_2; |
49 | p->opcode = *p->addr; | 50 | p->opcode = *p->addr; |
50 | } | 51 | } |
51 | 52 | ||
52 | void arch_arm_kprobe(struct kprobe *p) | 53 | void __kprobes arch_arm_kprobe(struct kprobe *p) |
53 | { | 54 | { |
54 | *p->addr = BREAKPOINT_INSTRUCTION; | 55 | *p->addr = BREAKPOINT_INSTRUCTION; |
55 | flushi(p->addr); | 56 | flushi(p->addr); |
56 | } | 57 | } |
57 | 58 | ||
58 | void arch_disarm_kprobe(struct kprobe *p) | 59 | void __kprobes arch_disarm_kprobe(struct kprobe *p) |
59 | { | 60 | { |
60 | *p->addr = p->opcode; | 61 | *p->addr = p->opcode; |
61 | flushi(p->addr); | 62 | flushi(p->addr); |
62 | } | 63 | } |
63 | 64 | ||
64 | void arch_remove_kprobe(struct kprobe *p) | 65 | void __kprobes arch_remove_kprobe(struct kprobe *p) |
65 | { | 66 | { |
66 | } | 67 | } |
67 | 68 | ||
@@ -111,7 +112,7 @@ static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs) | |||
111 | } | 112 | } |
112 | } | 113 | } |
113 | 114 | ||
114 | static int kprobe_handler(struct pt_regs *regs) | 115 | static int __kprobes kprobe_handler(struct pt_regs *regs) |
115 | { | 116 | { |
116 | struct kprobe *p; | 117 | struct kprobe *p; |
117 | void *addr = (void *) regs->tpc; | 118 | void *addr = (void *) regs->tpc; |
@@ -191,8 +192,9 @@ no_kprobe: | |||
191 | * The original INSN location was REAL_PC, it actually | 192 | * The original INSN location was REAL_PC, it actually |
192 | * executed at PC and produced destination address NPC. | 193 | * executed at PC and produced destination address NPC. |
193 | */ | 194 | */ |
194 | static unsigned long relbranch_fixup(u32 insn, unsigned long real_pc, | 195 | static unsigned long __kprobes relbranch_fixup(u32 insn, unsigned long real_pc, |
195 | unsigned long pc, unsigned long npc) | 196 | unsigned long pc, |
197 | unsigned long npc) | ||
196 | { | 198 | { |
197 | /* Branch not taken, no mods necessary. */ | 199 | /* Branch not taken, no mods necessary. */ |
198 | if (npc == pc + 0x4UL) | 200 | if (npc == pc + 0x4UL) |
@@ -217,7 +219,8 @@ static unsigned long relbranch_fixup(u32 insn, unsigned long real_pc, | |||
217 | /* If INSN is an instruction which writes it's PC location | 219 | /* If INSN is an instruction which writes it's PC location |
218 | * into a destination register, fix that up. | 220 | * into a destination register, fix that up. |
219 | */ | 221 | */ |
220 | static void retpc_fixup(struct pt_regs *regs, u32 insn, unsigned long real_pc) | 222 | static void __kprobes retpc_fixup(struct pt_regs *regs, u32 insn, |
223 | unsigned long real_pc) | ||
221 | { | 224 | { |
222 | unsigned long *slot = NULL; | 225 | unsigned long *slot = NULL; |
223 | 226 | ||
@@ -257,7 +260,7 @@ static void retpc_fixup(struct pt_regs *regs, u32 insn, unsigned long real_pc) | |||
257 | * This function prepares to return from the post-single-step | 260 | * This function prepares to return from the post-single-step |
258 | * breakpoint trap. | 261 | * breakpoint trap. |
259 | */ | 262 | */ |
260 | static void resume_execution(struct kprobe *p, struct pt_regs *regs) | 263 | static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs) |
261 | { | 264 | { |
262 | u32 insn = p->ainsn.insn[0]; | 265 | u32 insn = p->ainsn.insn[0]; |
263 | 266 | ||
@@ -315,8 +318,8 @@ static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr) | |||
315 | /* | 318 | /* |
316 | * Wrapper routine to for handling exceptions. | 319 | * Wrapper routine to for handling exceptions. |
317 | */ | 320 | */ |
318 | int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, | 321 | int __kprobes kprobe_exceptions_notify(struct notifier_block *self, |
319 | void *data) | 322 | unsigned long val, void *data) |
320 | { | 323 | { |
321 | struct die_args *args = (struct die_args *)data; | 324 | struct die_args *args = (struct die_args *)data; |
322 | switch (val) { | 325 | switch (val) { |
@@ -344,7 +347,8 @@ int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, | |||
344 | return NOTIFY_DONE; | 347 | return NOTIFY_DONE; |
345 | } | 348 | } |
346 | 349 | ||
347 | asmlinkage void kprobe_trap(unsigned long trap_level, struct pt_regs *regs) | 350 | asmlinkage void __kprobes kprobe_trap(unsigned long trap_level, |
351 | struct pt_regs *regs) | ||
348 | { | 352 | { |
349 | BUG_ON(trap_level != 0x170 && trap_level != 0x171); | 353 | BUG_ON(trap_level != 0x170 && trap_level != 0x171); |
350 | 354 | ||
@@ -368,7 +372,7 @@ static struct pt_regs jprobe_saved_regs; | |||
368 | static struct pt_regs *jprobe_saved_regs_location; | 372 | static struct pt_regs *jprobe_saved_regs_location; |
369 | static struct sparc_stackf jprobe_saved_stack; | 373 | static struct sparc_stackf jprobe_saved_stack; |
370 | 374 | ||
371 | int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs) | 375 | int __kprobes setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs) |
372 | { | 376 | { |
373 | struct jprobe *jp = container_of(p, struct jprobe, kp); | 377 | struct jprobe *jp = container_of(p, struct jprobe, kp); |
374 | 378 | ||
@@ -390,7 +394,7 @@ int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs) | |||
390 | return 1; | 394 | return 1; |
391 | } | 395 | } |
392 | 396 | ||
393 | void jprobe_return(void) | 397 | void __kprobes jprobe_return(void) |
394 | { | 398 | { |
395 | preempt_enable_no_resched(); | 399 | preempt_enable_no_resched(); |
396 | __asm__ __volatile__( | 400 | __asm__ __volatile__( |
@@ -403,7 +407,7 @@ extern void jprobe_return_trap_instruction(void); | |||
403 | 407 | ||
404 | extern void __show_regs(struct pt_regs * regs); | 408 | extern void __show_regs(struct pt_regs * regs); |
405 | 409 | ||
406 | int longjmp_break_handler(struct kprobe *p, struct pt_regs *regs) | 410 | int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs) |
407 | { | 411 | { |
408 | u32 *addr = (u32 *) regs->tpc; | 412 | u32 *addr = (u32 *) regs->tpc; |
409 | 413 | ||