From: Roland McGrath Date: Wed, 30 Jan 2008 12:31:56 +0000 (+0100) Subject: x86: x86 core dump TLS X-Git-Tag: v2.6.25-rc1~1143^2~497 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb61682b3f31dec7d058cae2f6edd2275248a704;p=linux-2.6 x86: x86 core dump TLS 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 Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index f8b89059e6..e6a680c7da 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -1313,6 +1313,7 @@ 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 576e83bd6d..7ceb24d87c 100644 --- a/include/linux/elf.h +++ b/include/linux/elf.h @@ -355,6 +355,7 @@ typedef struct elf64_shdr { #define NT_AUXV 6 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ +#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ /* Note header in a PT_NOTE section */