Date: Tue, 8 Oct 2013 17:26:28 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r256157 - head/sys/dev/random Message-ID: <201310081726.r98HQSpU050382@svn.freebsd.org>
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Author: dim Date: Tue Oct 8 17:26:28 2013 New Revision: 256157 URL: http://svnweb.freebsd.org/changeset/base/256157 Log: 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: re (kib) Approved by: so (des) MFC after: 1 week Modified: head/sys/dev/random/ivy.c Modified: head/sys/dev/random/ivy.c ============================================================================== --- head/sys/dev/random/ivy.c Tue Oct 8 16:36:17 2013 (r256156) +++ head/sys/dev/random/ivy.c Tue Oct 8 17:26:28 2013 (r256157) @@ -68,12 +68,12 @@ 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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