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libgomp/i386: Move syscall asms to static inline wrapper.

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Move syscall asms to static inline wrapper functions to improve #ifdeffery.
Also correct output type to int and timeout type to void *.

2021-02-11  Uroš Bizjak  <ubizjak@gmail.com>

libgomp/
	* config/linux/x86/futex.h (__futex_wait): New static inline
	wrapper function.  Correct output type to int and
	timeout type to void *.
	(__futex_wake): New static inline wrapper function.
	Correct output type to int.
	(futex_wait): Use __futex_wait.
	(futex_wake): Use __futex_wake.
This commit is contained in:
Uros Bizjak 2021-02-11 22:48:47 +01:00
parent 88cfd531c6
commit c36ad24e8a
1 changed files with 45 additions and 52 deletions
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97
libgomp/config/linux/x86/futex.h
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@ -30,99 +30,92 @@
# define SYS_futex 202
# endif
static inline void
futex_wait (int *addr, int val)
static inline int
__futex_wait (int *addr, int futex_op, int val)
{
long res;
int res;
register long r10 __asm__("%r10") = 0;
register void *timeout __asm ("r10") = NULL;
__asm volatile ("syscall"
: "=a" (res)
: "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wait),
"d" (val), "r" (r10)
: "0" (SYS_futex), "D" (addr), "S" (futex_op),
"d" (val), "r" (timeout)
: "r11", "rcx", "memory");
if (__builtin_expect (res == -ENOSYS, 0))
{
gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG;
gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG;
__asm volatile ("syscall"
: "=a" (res)
: "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wait),
"d" (val), "r" (r10)
: "r11", "rcx", "memory");
}
return res;
}
static inline void
futex_wake (int *addr, int count)
static inline int
__futex_wake (int *addr, int futex_op, int count)
{
long res;
int res;
__asm volatile ("syscall"
: "=a" (res)
: "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wake),
: "0" (SYS_futex), "D" (addr), "S" (futex_op),
"d" (count)
: "r11", "rcx", "memory");
if (__builtin_expect (res == -ENOSYS, 0))
{
gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG;
gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG;
__asm volatile ("syscall"
: "=a" (res)
: "0" (SYS_futex), "D" (addr), "S" (gomp_futex_wake),
"d" (count)
: "r11", "rcx", "memory");
}
return res;
}
#else
# ifndef SYS_futex
# define SYS_futex 240
# endif
static inline void
futex_wait (int *addr, int val)
static inline int
__futex_wait (int *addr, int futex_op, int val)
{
long res;
int res;
void *timeout = NULL;
__asm volatile ("int $0x80"
: "=a" (res)
: "0" (SYS_futex), "b" (addr), "c" (futex_op),
"d" (val), "S" (timeout)
: "memory");
return res;
}
static inline int
__futex_wake (int *addr, int futex_op, int count)
{
int res;
__asm volatile ("int $0x80"
: "=a" (res)
: "0" (SYS_futex), "b" (addr), "c" (gomp_futex_wait),
"d" (val), "S" (0)
: "0" (SYS_futex), "b" (addr), "c" (futex_op),
"d" (count)
: "memory");
return res;
}
#endif /* __x86_64__ */
static inline void
futex_wait (int *addr, int val)
{
int res = __futex_wait (addr, gomp_futex_wait, val);
if (__builtin_expect (res == -ENOSYS, 0))
{
gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG;
gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG;
__asm volatile ("int $0x80"
: "=a" (res)
: "0" (SYS_futex), "b" (addr), "c" (gomp_futex_wait),
"d" (val), "S" (0)
: "memory");
__futex_wait (addr, gomp_futex_wait, val);
}
}
static inline void
futex_wake (int *addr, int count)
{
long res;
int res = __futex_wake (addr, gomp_futex_wake, count);
__asm volatile ("int $0x80"
: "=a" (res)
: "0" (SYS_futex), "b" (addr), "c" (gomp_futex_wake),
"d" (count)
: "memory");
if (__builtin_expect (res == -ENOSYS, 0))
{
gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG;
gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG;
__asm volatile ("int $0x80"
: "=a" (res)
: "0" (SYS_futex), "b" (addr), "c" (gomp_futex_wake),
"d" (count)
: "memory");
__futex_wake (addr, gomp_futex_wake, count);
}
}
#endif /* __x86_64__ */
static inline void
cpu_relax (void)