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| author | Mystery Man <unknown@mandriva.org> | 2003-08-20 07:37:27 +0000 |
|---|---|---|
| committer | Mystery Man <unknown@mandriva.org> | 2003-08-20 07:37:27 +0000 |
| commit | 7f2ac73888b8ef372ea597049981b27e7d810ac2 (patch) | |
| tree | 354132889b63bbe5f446cb82869b3c3367135a80 /mdk-stage1/dietlibc/alpha/__testandset.S | |
| parent | 327bd24f8e4291bd1882de1990dd7339f781a9cb (diff) | |
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This commit was manufactured by cvs2svn to create branch 'MDKC_1_0'.topic/MDKC_1_0
Diffstat (limited to 'mdk-stage1/dietlibc/alpha/__testandset.S')
| -rw-r--r-- | mdk-stage1/dietlibc/alpha/__testandset.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/alpha/__testandset.S b/mdk-stage1/dietlibc/alpha/__testandset.S new file mode 100644 index 000000000..c5ef81241 --- /dev/null +++ b/mdk-stage1/dietlibc/alpha/__testandset.S @@ -0,0 +1,11 @@ +.text +.align 2 +.global __testandsets +.type __testandsets,@function +__testandset: + ldq_l $0, 0($16) /* load lock */ + bne $0,1f /* ok there is a lock... */ + lda $0, 1($31) /* load a 1 to register 0 */ + stq_c $0, 0($16) /* write lock is locked :) */ + beq $0,__testandset /* oops someone changed MY lock */ +1: ret $31, ($26), 0x01 /* return */ |