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The 64-bit PowerPC ABI implemented in binutils 2.15 requires some special

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quirks for weak-symbol handling. Text symbols require also marking weak
the special dot-symbol associated with the function, and data symbols
require that you not do that. To fix this, provide a hacked
__weak_reference for powerpc64, and define a new __weak_reference_data
for the single weak data symbol in base.

Revert after:	binutils 2.17 import
Obtained from:	projects/ppc64
This commit is contained in:
Nathan Whitehorn 2010-07-10 14:39:08 +00:00
parent 03d07f4e24
commit 8869de5e55
2 changed files with 13 additions and 1 deletions
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3
lib/libc/gen/_thread_init.c
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@ -32,7 +32,8 @@ __FBSDID("$FreeBSD$");
void _thread_init_stub(void);
__weak_reference(_thread_init_stub, _thread_init);
__weak_reference(_thread_autoinit_dummy_decl_stub, _thread_autoinit_dummy_decl);
__weak_reference_data(_thread_autoinit_dummy_decl_stub,
_thread_autoinit_dummy_decl);
int _thread_autoinit_dummy_decl_stub = 0;

11
sys/sys/cdefs.h
View File

@ -356,7 +356,18 @@
extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)))
#endif
#ifdef __STDC__
#ifdef __powerpc64__
#define __weak_reference(sym,alias) \
__asm__(".weak " #alias); \
__asm__(".equ " #alias ", " #sym); \
__asm__(".weak ." #alias); \
__asm__(".equ ." #alias ", ." #sym)
#else
#define __weak_reference(sym,alias) \
__asm__(".weak " #alias); \
__asm__(".equ " #alias ", " #sym)
#endif
#define __weak_reference_data(sym,alias)\
__asm__(".weak " #alias); \
__asm__(".equ " #alias ", " #sym)
#define __warn_references(sym,msg) \