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fix arm a_crash for big endian

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contrary to commit 89e149d275a7699a4a5e4c98bab267648f64cbba, big
endian arm does need the instruction bytes in big endian order. rather
than trying to use a special encoding that works as arm or thumb,
simply encode the simplest/canonical undefined instructions dependent
on whether __thumb__ is defined.
This commit is contained in:
Rich Felker 2016-01-25 21:59:55 +00:00
parent 89e149d275
commit e7a1118984
1 changed files with 4 additions and 2 deletions
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6
arch/arm/atomic_arch.h
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@ -66,9 +66,11 @@ static inline void a_barrier()
#define a_crash a_crash #define a_crash a_crash
static inline void a_crash() static inline void a_crash()
{ {
__asm__ __volatile__(".byte 0xf1, 0xde" __asm__ __volatile__(
#ifndef __thumb__ #ifndef __thumb__
", 0xfd, 0xe7" ".word 0xe7f000f0"
#else
".short 0xdeff"
#endif #endif
: : : "memory"); : : : "memory");
} }