Author: dim
Date: Sat Oct 26 11:56:51 2013
New Revision: 257156
URL: http://svnweb.freebsd.org/changeset/base/257156
Log:
MFC r256157:
Now our binutils's assembler supports the Intel Random Number Generator
extensions, we can change the .byte directives in sys/dev/random/ivy.c
to plain 'rdrand' mnemonics. This already worked for clang users, but
now it will also work for gcc users.
Approved by: so (des)
Modified:
stable/9/sys/dev/random/ivy.c
Directory Properties:
stable/9/sys/ (props changed)
Modified: stable/9/sys/dev/random/ivy.c
==============================================================================
--- stable/9/sys/dev/random/ivy.c Sat Oct 26 08:38:21 2013
(r257155)
+++ stable/9/sys/dev/random/ivy.c Sat Oct 26 11:56:51 2013
(r257156)
@@ -64,12 +64,12 @@ ivy_rng_store(long *tmp)
__asm __volatile(
#ifdef __amd64__
- ".byte\t0x48,0x0f,0xc7,0xf0\n\t" /* rdrand %rax */
+ "rdrand\t%%rax\n\t"
"jnc\t1f\n\t"
"movq\t%%rax,%1\n\t"
"movl\t$8,%%eax\n"
#else /* i386 */
- ".byte\t0x0f,0xc7,0xf0\n\t" /* rdrand %eax */
+ "rdrand\t%%eax\n\t"
"jnc\t1f\n\t"
"movl\t%%eax,%1\n\t"
"movl\t$4,%%eax\n"
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