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Diffstat (limited to 'nsprpub/pr/src/md/unix/os_Irix.s')
| -rw-r--r-- | nsprpub/pr/src/md/unix/os_Irix.s | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/nsprpub/pr/src/md/unix/os_Irix.s b/nsprpub/pr/src/md/unix/os_Irix.s new file mode 100644 index 000000000..ab1cb0b30 --- /dev/null +++ b/nsprpub/pr/src/md/unix/os_Irix.s @@ -0,0 +1,134 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* + * Atomically add a new element to the top of the stack + * + * usage : PR_StackPush(listp, elementp); + * ----------------------- + */ + +#include "md/_irix.h" +#ifdef _PR_HAVE_ATOMIC_CAS + +#include <sys/asm.h> +#include <sys/regdef.h> + +LEAF(PR_StackPush) + +retry_push: +.set noreorder + lw v0,0(a0) + li t1,1 + beq v0,t1,retry_push + move t0,a1 + + ll v0,0(a0) + beq v0,t1,retry_push + nop + sc t1,0(a0) + beq t1,0,retry_push + nop + sw v0,0(a1) + sync + sw t0,0(a0) + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + jr ra + nop + +END(PR_StackPush) + +/* + * + * Atomically remove the element at the top of the stack + * + * usage : elemep = PR_StackPop(listp); + * + */ + +LEAF(PR_StackPop) +retry_pop: +.set noreorder + + + lw v0,0(a0) + li t1,1 + beq v0,0,done + nop + beq v0,t1,retry_pop + nop + + ll v0,0(a0) + beq v0,0,done + nop + beq v0,t1,retry_pop + nop + sc t1,0(a0) + beq t1,0,retry_pop + nop + lw t0,0(v0) + sw t0,0(a0) +done: + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + jr ra + nop + +END(PR_StackPop) + +#endif /* _PR_HAVE_ATOMIC_CAS */ |