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-rw-r--r--src/vendorcode/amd/pi/Lib/amdlib.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/src/vendorcode/amd/pi/Lib/amdlib.c b/src/vendorcode/amd/pi/Lib/amdlib.c
index 4c8a56dba8..03ca207987 100644
--- a/src/vendorcode/amd/pi/Lib/amdlib.c
+++ b/src/vendorcode/amd/pi/Lib/amdlib.c
@@ -381,11 +381,17 @@ LibAmdBitScanReverse (
IN UINT32 value
)
{
- UINTN Index;
- for (Index = 31; Index >= 0; Index--){
- if (value & (1 << Index)) break;
- }
- return (UINT8) Index;
+ uint8_t bit = 31;
+ do {
+ if (value & (1 << 31))
+ return bit;
+
+ value <<= 1;
+ bit--;
+
+ } while (value != 0);
+
+ return 0xFF; /* Error code indicating no bit found */
}
AMDLIB_OPTIMIZE