linux-kernel - [PATCH 12/17] arm: user_regset: iWMMXt in core dumps

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Date:	Fri, 24 Apr 2009 17:12:59 -0700 (PDT)
From:	Roland McGrath <roland@...hat.com>
To:	Russell King <rmk@....linux.org.uk>
Cc:	Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org
Subject: [PATCH 12/17] arm: user_regset: iWMMXt in core dumps

This enables dumping the iWMMXt state in ELF core dumps if it was used.
It gets its own note of the new type NT_ARM_WMMX.

Signed-off-by: Roland McGrath <roland@...hat.com>
---
 arch/arm/kernel/ptrace.c |    1 +
 include/linux/elf.h      |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 821ce64..d59e074 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -828,6 +828,7 @@ static const struct user_regset arm_regsets[] = {
 #endif
 #ifdef CONFIG_IWMMXT
 	[REGSET_IWMMXT] = {
+		.core_note_type = NT_ARM_WMMX,
 		.n = sizeof(struct iwmmxt_struct) / sizeof(int),
 		.size = sizeof(int), .align = sizeof(int),
 		.active = iwmmxt_active, .get = iwmmxt_get, .set = iwmmxt_set
diff --git a/include/linux/elf.h b/include/linux/elf.h
index 45a937b..aa8bae6 100644
--- a/include/linux/elf.h
+++ b/include/linux/elf.h
@@ -361,6 +361,7 @@ typedef struct elf64_shdr {
 #define NT_PPC_VSX	0x102		/* PowerPC VSX registers */
 #define NT_386_TLS	0x200		/* i386 TLS slots (struct user_desc) */
 #define NT_386_IOPERM	0x201		/* x86 io permission bitmap (1=deny) */
+#define NT_ARM_WMMX	0x300		/* ARM iWMMXt registers */
 
 
 /* Note header in a PT_NOTE section */
--
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