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| author | H.J. Lu <hjl@gnu.org> | 1999-02-27 22:21:58 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-02-27 15:21:58 -0700 |
| commit | 8f08ea1e474635cfba9093c0698960d33a9ef549 (patch) | |
| tree | be7ee5618d4e11bd2a665ea02e2211cb4ec1f20d /gcc/defaults.h | |
| parent | b78abfe951cc9e460ff3eb07202344d04c5e4cca (diff) | |
| download | gcc-8f08ea1e474635cfba9093c0698960d33a9ef549.zip gcc-8f08ea1e474635cfba9093c0698960d33a9ef549.tar.gz gcc-8f08ea1e474635cfba9093c0698960d33a9ef549.tar.bz2 | |
frame.h: Update some comments.
* frame.h: Update some comments.
* defaults.h (TARGET_ATTRIBUTE_WEAK): Define.
* crtstuff.c (__register_frame_info, __deregister_frame_info): Declare
using TARGET_WEAK_ATTRIBUTE.
(__do_global_dtors_aux): Check if __deregister_frame_info is
zero before calling it.
(__do_global_dtors): Likewise.
(frame_dummy): Check if __register_frame_info is zero before
calling it.
(__frame_dummy): Likewise.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r25487
Diffstat (limited to 'gcc/defaults.h')
| -rw-r--r-- | gcc/defaults.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/defaults.h b/gcc/defaults.h index 0fbf2b9..a0e3bfc 100644 --- a/gcc/defaults.h +++ b/gcc/defaults.h @@ -133,6 +133,22 @@ do { fprintf (FILE, "\t%s\t", ASM_LONG); \ #endif #endif +/* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to + provide a weak attribute. Else define it to nothing. + + This would normally belong in gansidecl.h, but SUPPORTS_WEAK is + not available at that time. + + Note, this is only for use by target files which we know are to be + compiled by GCC. */ +#ifndef TARGET_ATTRIBUTE_WEAK +# if SUPPORTS_WEAK +# define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak)) +# else +# define TARGET_ATTRIBUTE_WEAK +# endif +#endif + /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that the rest of the DWARF 2 frame unwind support is also provided. */ #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX) |