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 <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -1313,6 +1313,7 @@ static const struct user_regset x86_32_regsets[] = {
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.active = xfpregs_active, .get = xfpregs_get, .set = xfpregs_set
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},
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[REGSET_TLS] = {
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.core_note_type = NT_386_TLS,
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.n = GDT_ENTRY_TLS_ENTRIES, .bias = GDT_ENTRY_TLS_MIN,
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.size = sizeof(struct user_desc),
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.align = sizeof(struct user_desc),
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@ -355,6 +355,7 @@ typedef struct elf64_shdr {
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#define NT_AUXV 6
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#define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */
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#define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */
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#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */
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/* Note header in a PT_NOTE section */
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