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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-05-17 10:00:05 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-05-17 10:00:15 +0200 |
| commit | 86f2552bbd0e17b19bb5e9881042533eaea553c7 (patch) | |
| tree | f520909d953f5d8c7db3dd4c4f2582bd7f7473aa /arch/s390/include | |
| parent | [S390] virtualization aware cpu measurement (diff) | |
| download | linux-dev-86f2552bbd0e17b19bb5e9881042533eaea553c7.tar.xz linux-dev-86f2552bbd0e17b19bb5e9881042533eaea553c7.zip | |
[S390] add breaking event address for user space
Copy the last breaking event address from the lowcore to a new
field in the thread_struct on each system entry. Add a new
ptrace request PTRACE_GET_LAST_BREAK and a new utrace regset
REGSET_LAST_BREAK to query the last breaking event.
This is useful for debugging wild branches in user space code.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/ptrace.h | 3 | ||||
| -rw-r--r-- | arch/s390/include/asm/thread_info.h | 1 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h index fef9b33cdd59..e2c218dc68a6 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -328,8 +328,8 @@ struct pt_regs psw_t psw; unsigned long gprs[NUM_GPRS]; unsigned long orig_gpr2; - unsigned short svcnr; unsigned short ilc; + unsigned short svcnr; }; #endif @@ -436,6 +436,7 @@ typedef struct #define PTRACE_PEEKDATA_AREA 0x5003 #define PTRACE_POKETEXT_AREA 0x5004 #define PTRACE_POKEDATA_AREA 0x5005 +#define PTRACE_GET_LAST_BREAK 0x5006 /* * PT_PROT definition is loosely based on hppa bsd definition in diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index 34f0873d6525..be3d3f91d86c 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -50,6 +50,7 @@ struct thread_info { struct restart_block restart_block; __u64 user_timer; __u64 system_timer; + unsigned long last_break; /* last breaking-event-address. */ }; /* |