diff options
author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2010-02-12 07:38:40 -0500 |
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committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-02-17 07:19:26 -0500 |
commit | 952974ac61f686896bd4134dae106a886a5589f1 (patch) | |
tree | c5eaebb466cddc7c6b29c3bc3f3da4807b279f29 /arch/s390/include | |
parent | f850c30c8b426ba1688cb63b1a3e534eed03a138 (diff) |
s390: Add pt_regs register and stack access API
This API is needed for the kprobe-based event tracer.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <20100212123840.GB27548@osiris.boeblingen.de.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r-- | arch/s390/include/asm/ptrace.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index 95dcf183a28d..dd2d913afcae 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h | |||
@@ -492,13 +492,24 @@ struct user_regs_struct | |||
492 | struct task_struct; | 492 | struct task_struct; |
493 | extern void user_enable_single_step(struct task_struct *); | 493 | extern void user_enable_single_step(struct task_struct *); |
494 | extern void user_disable_single_step(struct task_struct *); | 494 | extern void user_disable_single_step(struct task_struct *); |
495 | extern void show_regs(struct pt_regs * regs); | ||
495 | 496 | ||
496 | #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) | 497 | #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) |
497 | #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) | 498 | #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) |
498 | #define user_stack_pointer(regs)((regs)->gprs[15]) | 499 | #define user_stack_pointer(regs)((regs)->gprs[15]) |
499 | #define regs_return_value(regs)((regs)->gprs[2]) | 500 | #define regs_return_value(regs)((regs)->gprs[2]) |
500 | #define profile_pc(regs) instruction_pointer(regs) | 501 | #define profile_pc(regs) instruction_pointer(regs) |
501 | extern void show_regs(struct pt_regs * regs); | 502 | |
503 | int regs_query_register_offset(const char *name); | ||
504 | const char *regs_query_register_name(unsigned int offset); | ||
505 | unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset); | ||
506 | unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); | ||
507 | |||
508 | static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) | ||
509 | { | ||
510 | return regs->gprs[15] & PSW_ADDR_INSN; | ||
511 | } | ||
512 | |||
502 | #endif /* __KERNEL__ */ | 513 | #endif /* __KERNEL__ */ |
503 | #endif /* __ASSEMBLY__ */ | 514 | #endif /* __ASSEMBLY__ */ |
504 | 515 | ||