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Don't define CTORS_SECTION_ASM_OP and DTORS_SECTION_ASM_OP on arm when

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built with clang. When these are defined the lists are defined similar to:

asm(".section .ctors");
STATIC func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) };
asm(".section .dtors");
STATIC func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) };

The problem is clang will move the two arrays out of the .ctors and .dtors
sections causing these sections to contain a single null address. By not
defining these macros we use the version of the code that places the arrays
is their sections by using __attribute__((section(".ctors"))) and similar
for .dtors.

Submitted by:	Daisuke Aoyama <aoyama AT peach.ne.jp>
This commit is contained in:
Andrew Turner 2012-12-15 21:24:31 +00:00
parent 384f99dea7
commit d131070105
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=244276
1 changed files with 2 additions and 0 deletions
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contrib/gcc/config/arm/arm.h
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@ -1866,8 +1866,10 @@ typedef struct
# define DTOR_LIST_BEGIN asm (ARM_EABI_DTORS_SECTION_OP)
# define DTOR_LIST_END /* empty */
# else /* !defined (__ARM_EABI__) */
# ifndef __clang__
# define CTORS_SECTION_ASM_OP ARM_CTORS_SECTION_OP
# define DTORS_SECTION_ASM_OP ARM_DTORS_SECTION_OP
# endif
# endif /* !defined (__ARM_EABI__) */
#endif /* !defined (IN_LIBCC2) */