[POWERPC] Add SPE registers to core dumps (24f1a849) · Commits · 戴 / test

This makes the SPE register data appear in ELF core dumps, using the new n_type value NT_PPC_SPE (0x101). This new note type is not used by any consumers of core files yet, but support can be added. I don't even have any hardware with SPE capabilities, so I've never seen such a note. But this demonstrates how simple it is to export register information in core dumps when the user_regset style is used for the low-level code. Signed-off-by:

Roland McGrath <roland@redhat.com> Signed-off-by:

Paul Mackerras <paulus@samba.org>

arch/powerpc/kernel/ptrace.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -581,7 +581,7 @@ static const struct user_regset compat_regsets[] = {
		#endif
		#ifdef CONFIG_SPE
		[REGSET_SPE] = {
		.n = 35,
		.core_note_type = NT_PPC_SPE, .n = 35,
		.size = sizeof(u32), .align = sizeof(u32),
		.active = evr_active, .get = evr_get, .set = evr_set
		},

include/linux/elf.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -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_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */
		#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */

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