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sh: kprobes: __kprobes annotations and formatting cleanups. 

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2008-09-08 18:22:47 +09:00
Родитель 734db3770d
Коммит 4eb5845d6c
1 изменённых файлов: 20 добавлений и 17 удалений
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37
arch/sh/kernel/kprobes.c
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@ -115,20 +115,20 @@ void __kprobes arch_remove_kprobe(struct kprobe *p)
} }
} }
static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb) static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
{ {
kcb->prev_kprobe.kp = kprobe_running(); kcb->prev_kprobe.kp = kprobe_running();
kcb->prev_kprobe.status = kcb->kprobe_status; kcb->prev_kprobe.status = kcb->kprobe_status;
} }
static inline void restore_previous_kprobe(struct kprobe_ctlblk *kcb) static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
{ {
__get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp; __get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
kcb->kprobe_status = kcb->prev_kprobe.status; kcb->kprobe_status = kcb->prev_kprobe.status;
} }
static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs, static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
struct kprobe_ctlblk *kcb) struct kprobe_ctlblk *kcb)
{ {
__get_cpu_var(current_kprobe) = p; __get_cpu_var(current_kprobe) = p;
} }
@ -138,7 +138,7 @@ static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
* on the next instruction, following branches. Two probes are set if the * on the next instruction, following branches. Two probes are set if the
* branch is conditional. * branch is conditional.
*/ */
static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs) static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
{ {
kprobe_opcode_t *addr = NULL; kprobe_opcode_t *addr = NULL;
saved_current_opcode.addr = (kprobe_opcode_t *) (regs->pc); saved_current_opcode.addr = (kprobe_opcode_t *) (regs->pc);
@ -273,12 +273,12 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
/* handler has already set things up, so skip ss setup */ /* handler has already set things up, so skip ss setup */
return 1; return 1;
ss_probe: ss_probe:
prepare_singlestep(p, regs); prepare_singlestep(p, regs);
kcb->kprobe_status = KPROBE_HIT_SS; kcb->kprobe_status = KPROBE_HIT_SS;
return 1; return 1;
no_kprobe: no_kprobe:
preempt_enable_no_resched(); preempt_enable_no_resched();
return ret; return ret;
} }
@ -358,7 +358,7 @@ int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
return orig_ret_address; return orig_ret_address;
} }
static inline int post_kprobe_handler(struct pt_regs *regs) static int __kprobes post_kprobe_handler(struct pt_regs *regs)
{ {
struct kprobe *cur = kprobe_running(); struct kprobe *cur = kprobe_running();
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
@ -391,14 +391,15 @@ static inline int post_kprobe_handler(struct pt_regs *regs)
} }
} }
/*Restore back the original saved kprobes variables and continue. */ /* Restore back the original saved kprobes variables and continue. */
if (kcb->kprobe_status == KPROBE_REENTER) { if (kcb->kprobe_status == KPROBE_REENTER) {
restore_previous_kprobe(kcb); restore_previous_kprobe(kcb);
goto out; goto out;
} }
reset_current_kprobe(); reset_current_kprobe();
out: out:
preempt_enable_no_resched(); preempt_enable_no_resched();
return 1; return 1;
@ -463,6 +464,7 @@ int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
default: default:
break; break;
} }
return 0; return 0;
} }
@ -498,8 +500,8 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
ret = NOTIFY_STOP; ret = NOTIFY_STOP;
} else { } else {
p = __get_cpu_var(current_kprobe); p = __get_cpu_var(current_kprobe);
if (p->break_handler if (p->break_handler &&
&& p->break_handler(p, args->regs)) p->break_handler(p, args->regs))
ret = NOTIFY_STOP; ret = NOTIFY_STOP;
} }
} }
@ -542,25 +544,26 @@ void __kprobes jprobe_return(void)
int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs) int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
{ {
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk(); struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
u8 *addr = (u8 *) regs->pc;
unsigned long stack_addr = kcb->jprobe_saved_r15; unsigned long stack_addr = kcb->jprobe_saved_r15;
u8 *addr = (u8 *)regs->pc;
if ((addr >= (u8 *) jprobe_return) if ((addr >= (u8 *)jprobe_return) &&
&& (addr <= (u8 *) jprobe_return_end)) { (addr <= (u8 *)jprobe_return_end)) {
*regs = kcb->jprobe_saved_regs; *regs = kcb->jprobe_saved_regs;
memcpy((kprobe_opcode_t *) stack_addr, kcb->jprobes_stack, memcpy((kprobe_opcode_t *)stack_addr, kcb->jprobes_stack,
MIN_STACK_SIZE(stack_addr)); MIN_STACK_SIZE(stack_addr));
kcb->kprobe_status = KPROBE_HIT_SS; kcb->kprobe_status = KPROBE_HIT_SS;
preempt_enable_no_resched(); preempt_enable_no_resched();
return 1; return 1;
} }
return 0; return 0;
} }
static struct kprobe trampoline_p = { static struct kprobe trampoline_p = {
.addr = (kprobe_opcode_t *) &kretprobe_trampoline, .addr = (kprobe_opcode_t *)&kretprobe_trampoline,
.pre_handler = trampoline_probe_handler .pre_handler = trampoline_probe_handler
}; };