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futex.h (sys_futex0): Change to static function with noinline, nomips16 attributes under MIPS16. 

2012-08-29  Chung-Lin Tang  <cltang@codesourcery.com>

	libgomp/
	* config/linux/mips/futex.h (sys_futex0): Change to static
	function with noinline, nomips16 attributes under MIPS16. Adjust
	asm statement to place 'li v0,SYS_futex' immediately before
	syscall insn.

From-SVN: r190772
This commit is contained in:
Chung-Lin Tang 2012-08-29 09:29:55 +00:00 committed by Chung-Lin Tang
parent 27f36b7837
commit c24dbebb44
2 changed files with 17 additions and 4 deletions
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7
libgomp/ChangeLog
View File

@ -1,3 +1,10 @@
2012-08-29 Chung-Lin Tang <cltang@codesourcery.com>
* config/linux/mips/futex.h (sys_futex0): Change to static
function with noinline, nomips16 attributes under MIPS16. Adjust
asm statement to place 'li v0,SYS_futex' immediately before
syscall insn.
2012-07-04 Sandra Loosemore <sandra@codesourcery.com>
* libgomp.texi (Library Index): Renamed from "Index" to prevent

14
libgomp/config/linux/mips/futex.h
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@ -28,20 +28,26 @@
#define FUTEX_WAIT 0
#define FUTEX_WAKE 1
#ifdef __mips16
static void __attribute__((noinline,nomips16))
#else
static inline void
#endif
sys_futex0 (int *addr, int op, int val)
{
register unsigned long __v0 asm("$2") = (unsigned long) SYS_futex;
register unsigned long __v0 asm("$2");
register unsigned long __a0 asm("$4") = (unsigned long) addr;
register unsigned long __a1 asm("$5") = (unsigned long) op;
register unsigned long __a2 asm("$6") = (unsigned long) val;
register unsigned long __a3 asm("$7") = 0;
__asm volatile ("syscall"
__asm volatile ("li $2, %6\n\t"
"syscall"
/* returns $a3 (errno), $v0 (return value) */
: "=r" (__v0), "=r" (__a3)
/* arguments in v0 (syscall) a0-a3 */
: "r" (__v0), "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a3)
/* arguments in a0-a3, and syscall number */
: "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a3),
"IK" (SYS_futex)
/* clobbers at, v1, t0-t9, memory */
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", "$14",
"$15", "$24", "$25", "memory");