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| author | Michael Eager <eager@mvista.com> | 2004-03-19 23:12:10 +0000 |
|---|---|---|
| committer | Phil Edwards <pme@gcc.gnu.org> | 2004-03-19 23:12:10 +0000 |
| commit | 1b1a632b4dd80cc7c688bab50c38c66632f8d636 (patch) | |
| tree | 591c1089cf1b5ffd761d1b3b15fb7d9ca5da1492 /libstdc++-v3/config/cpu | |
| parent | 24d82bce7ab29c1616b961d79f676bb08d339719 (diff) | |
| download | gcc-1b1a632b4dd80cc7c688bab50c38c66632f8d636.zip gcc-1b1a632b4dd80cc7c688bab50c38c66632f8d636.tar.gz gcc-1b1a632b4dd80cc7c688bab50c38c66632f8d636.tar.bz2 | |
atomicity.h: Prevent reg loads between LL and SC instructions.
2004-03-19 Michael Eager <eager@mvista.com>
* config/cpu/mips/atomicity.h: Prevent reg loads between LL and
SC instructions.
From-SVN: r79711
Diffstat (limited to 'libstdc++-v3/config/cpu')
| -rw-r--r-- | libstdc++-v3/config/cpu/mips/atomicity.h | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/libstdc++-v3/config/cpu/mips/atomicity.h b/libstdc++-v3/config/cpu/mips/atomicity.h index 0871342..ecfb696 100644 --- a/libstdc++-v3/config/cpu/mips/atomicity.h +++ b/libstdc++-v3/config/cpu/mips/atomicity.h @@ -44,14 +44,15 @@ namespace __gnu_cxx #if _MIPS_SIM == _ABIO32 ".set mips2\n\t" #endif - "ll %0,%3\n\t" - "addu %1,%4,%0\n\t" - "sc %1,%2\n\t" + "ll %0,0(%2)\n\t" + "addu %1,%3,%0\n\t" + "sc %1,0(%2)\n\t" ".set pop\n\t" "beqz %1,1b\n\t" "/* End exchange & add */" - : "=&r"(__result), "=&r"(__tmp), "=m"(*__mem) - : "m" (*__mem), "r"(__val)); + : "=&r"(__result), "=&r"(__tmp) + : "r"(__mem), "r"(__val) + : "memory" ); return __result; } @@ -69,13 +70,14 @@ namespace __gnu_cxx #if _MIPS_SIM == _ABIO32 ".set mips2\n\t" #endif - "ll %0,%2\n\t" - "addu %0,%3,%0\n\t" - "sc %0,%1\n\t" + "ll %0,0(%1)\n\t" + "addu %0,%2,%0\n\t" + "sc %0,0(%1)\n\t" ".set pop\n\t" "beqz %0,1b\n\t" "/* End atomic add */" - : "=&r"(__result), "=m"(*__mem) - : "m" (*__mem), "r"(__val)); + : "=&r"(__result) + : "r"(__mem), "r"(__val) + : "memory" ); } } // namespace __gnu_cxx |