Messages in this thread Patch in this message | | | Date | Tue, 11 May 2004 10:12:46 -0700 (PDT) | From | Davide Libenzi <> | Subject | [patch] really-ptrace-single-step |
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This patch lets a ptrace process on x86 to "see" the instruction following the INT #80h op.
- Davide
arch/i386/kernel/entry.S | 2 +- include/asm-i386/thread_info.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
Index: arch/i386/kernel/entry.S =================================================================== RCS file: /usr/src/bkcvs/linux-2.5/arch/i386/kernel/entry.S,v retrieving revision 1.83 diff -u -r1.83 entry.S --- arch/i386/kernel/entry.S 12 Apr 2004 20:29:12 -0000 1.83 +++ arch/i386/kernel/entry.S 11 May 2004 06:35:29 -0000 @@ -354,7 +354,7 @@ # perform syscall exit tracing ALIGN syscall_exit_work: - testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT), %cl + testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP), %cl jz work_pending sti # could let do_syscall_trace() call # schedule() instead Index: include/asm-i386/thread_info.h =================================================================== RCS file: /usr/src/bkcvs/linux-2.5/include/asm-i386/thread_info.h,v retrieving revision 1.19 diff -u -r1.19 thread_info.h --- include/asm-i386/thread_info.h 12 Apr 2004 20:29:12 -0000 1.19 +++ include/asm-i386/thread_info.h 11 May 2004 06:34:47 -0000 @@ -165,7 +165,7 @@ /* work to do on interrupt/exception return */ #define _TIF_WORK_MASK \ - (0x0000FFFF & ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)) + (0x0000FFFF & ~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP)) #define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */ /* - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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