diff options
Diffstat (limited to 'src/osd/eigccx86.h')
-rw-r--r-- | src/osd/eigccx86.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/osd/eigccx86.h b/src/osd/eigccx86.h index b3831d21524..b67b646451e 100644 --- a/src/osd/eigccx86.h +++ b/src/osd/eigccx86.h @@ -474,12 +474,13 @@ _count_leading_zeros(uint32_t value) __asm__ ( " bsrl %[value], %[result] ;" " cmovzl %[bias], %[result] ;" + " xorl $31, %[result] ;" : [result] "=&r" (result) // result can be in any register : [value] "rm" (value) // 'value' can be register or memory - , [bias] "rm" (~uint32_t(0)) // 'bias' can be register or memory + , [bias] "rm" (uint32_t(63)) // 'bias' can be register or memory : "cc" // clobbers condition codes ); - return 31U - result; + return result; } @@ -496,12 +497,13 @@ _count_leading_ones(uint32_t value) __asm__ ( " bsrl %[value], %[result] ;" " cmovzl %[bias], %[result] ;" + " xorl $31, %[result] ;" : [result] "=&r" (result) // result can be in any register : [value] "rm" (~value) // 'value' can be register or memory - , [bias] "rm" (~uint32_t(0)) // 'bias' can be register or memory + , [bias] "rm" (uint32_t(63)) // 'bias' can be register or memory : "cc" // clobbers condition codes ); - return 31U - result; + return result; } #endif // MAME_OSD_EIGCCX86_H |