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don't hardcode register r0/v1 when reading the TLS

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this leads to much improved code when calling __get_tls()

Change-Id: I21d870fb33c33a921ca55c4e100772e0f7a8d1e4
This commit is contained in:
Mathias Agopian 2013-06-14 19:00:03 -07:00 committed by Elliott Hughes
parent 657d0da751
commit b6e340080a
1 changed files with 9 additions and 12 deletions
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21
libc/private/bionic_tls.h
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@ -84,20 +84,17 @@ extern int __set_tls(void* ptr);
/* get the TLS */
#if defined(__arm__)
# define __get_tls() \
({ register unsigned int __val asm("r0"); \
asm ("mrc p15, 0, r0, c13, c0, 3" : "=r"(__val) ); \
(volatile void*)__val; })
({ register unsigned int __val; \
asm ("mrc p15, 0, %0, c13, c0, 3" : "=r"(__val)); \
(volatile void*) __val; })
#elif defined(__mips__)
# define __get_tls() \
({ register unsigned int __val asm("v1"); \
asm ( \
" .set push\n" \
" .set mips32r2\n" \
" rdhwr %0,$29\n" \
" .set pop\n" \
: "=r"(__val) \
); \
(volatile void*)__val; })
({ register unsigned int __val; \
asm (" .set push\n" \
" .set mips32r2\n" \
" rdhwr %0,$29\n" \
" .set pop\n" : "=r"(__val)); \
(volatile void*) __val; })
#elif defined(__i386__)
# define __get_tls() \
({ register void* __val; \