Messages in this thread Patch in this message | | | From | Roland McGrath <> | Subject | [PATCH -mm 42/43] x86 core dump TLS | Date | Thu, 20 Dec 2007 04:00:23 -0800 (PST) |
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This makes ELF core dumps of 32-bit processes include a new note type NT_386_TLS (0x200) giving the contents of the TLS slots in struct user_desc format. This lets post mortem examination figure out what the segment registers mean like the debugger does with get_thread_area on a live process.
Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/x86/kernel/ptrace.c | 1 + include/linux/elf.h | 1 + 2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index e8c2ba3..25b6578 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -1314,6 +1314,7 @@ static const struct user_regset x86_32_regsets[] = { .active = xfpregs_active, .get = xfpregs_get, .set = xfpregs_set }, [REGSET_TLS] = { + .core_note_type = NT_386_TLS, .n = GDT_ENTRY_TLS_ENTRIES, .bias = GDT_ENTRY_TLS_MIN, .size = sizeof(struct user_desc), .align = sizeof(struct user_desc), diff --git a/include/linux/elf.h b/include/linux/elf.h index ba268b2..30eb6fb 100644 --- a/include/linux/elf.h +++ b/include/linux/elf.h @@ -356,6 +356,7 @@ typedef struct elf64_shdr { #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ +#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ /* Note header in a PT_NOTE section */ -- 1.5.3.6
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