[POWERPC] Add SPE registers to core dumps

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>
git-mirror · Feb 7, 2008 · 24f1a84 · 24f1a84
1 parent 0deef2c
commit 24f1a84
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
@@ -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
 	},

diff --git 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_PPC_SPE	0x101		/* PowerPC SPE/EVR registers */
 #define NT_386_TLS	0x200		/* i386 TLS slots (struct user_desc) */