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Use raw opcodes for rdrand to build with older binutils

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This commit is contained in:
Martin Willi
2013-01-11 10:45:14 +01:00
parent 19ae23452a
commit 2cd6c5115b
1 changed files with 6 additions and 6 deletions
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src/libstrongswan/plugins/rdrand/rdrand_rng.c
+6 -6
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@@ -61,9 +61,9 @@ static bool rdrand16(u_int16_t *out)
for (i = 0; i < MAX_TRIES; i++) for (i = 0; i < MAX_TRIES; i++)
{ {
asm("rdrand %0;" asm(".byte 0x66;.byte 0x0f;.byte 0xc7;.byte 0xf0; " /* rdrand */
"setc %1;" "setc %1;"
: "=r"(*out), "=qm"(res)); : "=a"(*out), "=qm"(res));
if (res) if (res)
{ {
@@ -83,9 +83,9 @@ static bool rdrand32(u_int32_t *out)
for (i = 0; i < MAX_TRIES; i++) for (i = 0; i < MAX_TRIES; i++)
{ {
asm("rdrand %0;" asm(".byte 0x0f;.byte 0xc7;.byte 0xf0;" /* rdrand */
"setc %1;" "setc %1;"
: "=r"(*out), "=qm"(res)); : "=a"(*out), "=qm"(res));
if (res) if (res)
{ {
@@ -106,9 +106,9 @@ static bool rdrand64(u_int64_t *out)
for (i = 0; i < MAX_TRIES; i++) for (i = 0; i < MAX_TRIES; i++)
{ {
asm("rdrand %0;" asm(".byte 0x48;.byte 0x0f;.byte 0xc7;.byte 0xf0;" /* rdrand */
"setc %1;" "setc %1;"
: "=r"(*out), "=qm"(res)); : "=a"(*out), "=qm"(res));
if (res) if (res)
{ {