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This commit is contained in:
Andreas Jaeger 2002-02-07 10:39:06 +00:00
parent 9ff2687616
commit 6d1e7ba623
2 changed files with 16 additions and 26 deletions
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31
sysdeps/mips/atomicity.h
View File

@ -1,5 +1,5 @@
/* Low-level functions for atomic operations. Mips version.
Copyright (C) 2001 Free Software Foundation, Inc.
Copyright (C) 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -32,16 +32,12 @@ exchange_and_add (volatile uint32_t *mem, int val)
int result, tmp;
__asm__ __volatile__
("/* Inline exchange & add */\n\t"
"ll %0,%3\n"
("/* Inline exchange & add */\n"
"1:\n\t"
"ll %0,%3\n\t"
"addu %1,%4,%0\n\t"
"sc %1,%2\n\t"
".set push\n\t"
".set noreorder\n\t"
"beqzl %1,1b\n\t"
" ll %0,%3\n\t"
".set pop\n\t"
"beqz %1,1b\n\t"
"/* End exchange & add */"
: "=&r"(result), "=&r"(tmp), "=m"(*mem)
: "m" (*mem), "r"(val)
@ -57,16 +53,12 @@ atomic_add (volatile uint32_t *mem, int val)
int result;
__asm__ __volatile__
("/* Inline atomic add */\n\t"
"ll %0,%2\n"
("/* Inline atomic add */\n"
"1:\n\t"
"ll %0,%2\n\t"
"addu %0,%3,%0\n\t"
"sc %0,%1\n\t"
".set push\n\t"
".set noreorder\n\t"
"beqzl %0,1b\n\t"
" ll %0,%2\n\t"
".set pop\n\t"
"beqz %0,1b\n\t"
"/* End atomic add */"
: "=&r"(result), "=m"(*mem)
: "m" (*mem), "r"(val)
@ -80,18 +72,17 @@ compare_and_swap (volatile long int *p, long int oldval, long int newval)
long int ret, temp;
__asm__ __volatile__
("/* Inline compare & swap */\n\t"
"ll %1,%5\n"
("/* Inline compare & swap */\n"
"1:\n\t"
"ll %1,%5\n\t"
".set push\n\t"
".set noreorder\n\t"
"bne %1,%3,2f\n\t"
" move %0,$0\n\t"
".set pop\n\t"
"move %0,%4\n\t"
"sc %0,%2\n\t"
"beqzl %0,1b\n\t"
" ll %1,%5\n\t"
".set pop\n"
"beqz %0,1b\n"
"2:\n\t"
"/* End compare & swap */"
: "=&r" (ret), "=&r" (temp), "=m" (*p)

11
sysdeps/unix/sysv/linux/mips/sys/tas.h
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2000 Free Software Foundation, Inc.
/* Copyright (C) 2000, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Maciej W. Rozycki <macro@ds2.pg.gda.pl>, 2000.
@ -42,17 +42,16 @@ _test_and_set (int *p, int v) __THROW
int r, t;
__asm__ __volatile__
("/* Inline test and set */\n\t"
"ll %0,%3\n"
("/* Inline test and set */\n"
"1:\n\t"
"ll %0,%3\n\t"
".set push\n\t"
".set noreorder\n\t"
"beq %0,%4,2f\n\t"
" move %1,%4\n\t"
".set pop\n\t"
"sc %1,%2\n\t"
"beqzl %1,1b\n\t"
" ll %0,%3\n\t"
".set pop\n"
"beqz %1,1b\n"
"2:\n\t"
"/* End test and set */"
: "=&r" (r), "=&r" (t), "=m" (*p)