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MIPS: 64-bit: Fix o32 core dump

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If an o32 process generates a core dump on a 64 bit kernel, the core file
will not be correctly recognized. This is because ELF_CORE_COPY_REGS and
ELF_CORE_COPY_TASK_REGS are not correctly defined for o32 and will use
the default register set which would be CONFIG_64BIT in asm/elf.h.

So we'll switch to use the right register defines in this situation by
checking for WANT_COMPAT_REG_H and use the right defines of
ELF_CORE_COPY_REGS and ELF_CORE_COPY_TASK_REGS.

[Ralf: made ELF_CORE_COPY_TASK_REGS() bullet-proof against funny arguments.]

Signed-off-by: Yong Zhang <yong.zhang@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Yong Zhang
2009-07-01 09:35:39 +08:00
committed by Ralf Baechle
parent ea4bbfd004
commit cad9bc6904
3 changed files with 22 additions and 4 deletions
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2
arch/mips/include/asm/reg.h
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@@ -69,7 +69,7 @@
#endif
#ifdef CONFIG_64BIT
#if defined(CONFIG_64BIT) && !defined(WANT_COMPAT_REG_H)
#define EF_R0 0
#define EF_R1 1