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elf coredump: replace ELF_CORE_EXTRA_* macros by functions

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elf_core_dump() and elf_fdpic_core_dump() use #ifdef and the corresponding
macro for hiding _multiline_ logics in functions.  This patch removes
#ifdef and replaces ELF_CORE_EXTRA_* by corresponding functions.  For
architectures not implemeonting ELF_CORE_EXTRA_*, we use weak functions in
order to reduce a range of modification.

This cleanup is for my next patches, but I think this cleanup itself is
worth doing regardless of my firnal purpose.

Signed-off-by: Daisuke HATAYAMA <d.hatayama@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Greg Ungerer <gerg@snapgear.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daisuke HATAYAMA
2010-03-05 13:44:07 -08:00
committed by Linus Torvalds
parent 088e7af73a
commit 1fcccbac89
13 changed files with 191 additions and 109 deletions
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48
arch/ia64/include/asm/elf.h
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@@ -219,54 +219,6 @@ do { \
NEW_AUX_ENT(AT_SYSINFO_EHDR, (unsigned long) GATE_EHDR); \
} while (0)
/*
* These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
* extra segments containing the gate DSO contents. Dumping its
* contents makes post-mortem fully interpretable later without matching up
* the same kernel and hardware config to see what PC values meant.
* Dumping its extra ELF program headers includes all the other information
* a debugger needs to easily find how the gate DSO was being used.
*/
#define ELF_CORE_EXTRA_PHDRS (GATE_EHDR->e_phnum)
#define ELF_CORE_WRITE_EXTRA_PHDRS \
do { \
const struct elf_phdr *const gate_phdrs = \
(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); \
int i; \
Elf64_Off ofs = 0; \
for (i = 0; i < GATE_EHDR->e_phnum; ++i) { \
struct elf_phdr phdr = gate_phdrs[i]; \
if (phdr.p_type == PT_LOAD) { \
phdr.p_memsz = PAGE_ALIGN(phdr.p_memsz); \
phdr.p_filesz = phdr.p_memsz; \
if (ofs == 0) { \
ofs = phdr.p_offset = offset; \
offset += phdr.p_filesz; \
} \
else \
phdr.p_offset = ofs; \
} \
else \
phdr.p_offset += ofs; \
phdr.p_paddr = 0; /* match other core phdrs */ \
DUMP_WRITE(&phdr, sizeof(phdr)); \
} \
} while (0)
#define ELF_CORE_WRITE_EXTRA_DATA \
do { \
const struct elf_phdr *const gate_phdrs = \
(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff); \
int i; \
for (i = 0; i < GATE_EHDR->e_phnum; ++i) { \
if (gate_phdrs[i].p_type == PT_LOAD) { \
DUMP_WRITE((void *) gate_phdrs[i].p_vaddr, \
PAGE_ALIGN(gate_phdrs[i].p_memsz)); \
break; \
} \
} \
} while (0)
/*
* format for entries in the Global Offset Table
*/