diff options
| author | Joel Sing <jsing@cvs.openbsd.org> | 2014-01-02 04:39:57 +0000 |
|---|---|---|
| committer | Joel Sing <jsing@cvs.openbsd.org> | 2014-01-02 04:39:57 +0000 |
| commit | 9cfb17f6fef764ad78060f0dd052291ff9ca99c3 (patch) | |
| tree | e3f34aec18027f2a50a37d75b9bcea1ac74072d0 /sys/arch/i386/stand | |
| parent | 5d1e919f595c95a96b8b11889a5f68e5f8e4477f (diff) | |
Simplify things slightly by using four byte indexing.
Diffstat (limited to 'sys/arch/i386/stand')
| -rw-r--r-- | sys/arch/i386/stand/libsa/random_i386.S | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/sys/arch/i386/stand/libsa/random_i386.S b/sys/arch/i386/stand/libsa/random_i386.S index 03c2f21a3be..568c8bb4daf 100644 --- a/sys/arch/i386/stand/libsa/random_i386.S +++ b/sys/arch/i386/stand/libsa/random_i386.S @@ -55,7 +55,6 @@ ENTRY(mdrandom) movl 36(%esp), %ebx movl 40(%esp), %edx shrl $2, %edx - shll $2, %edx xorl %edi, %edi andl $CPUIDECX_RDRAND, %ecx // See if we have rdrand. @@ -66,8 +65,8 @@ ENTRY(mdrandom) userand: rdrand %eax - xorl %eax, 0(%edi,%ebx) - addl $4, %edi + xorl %eax, (%ebx,%edi,4) + incl %edi cmpl %edi, %edx jne userand jmp done @@ -75,8 +74,8 @@ userand: usetsc: rdtsc // Populates edx:eax. mull %edx - xorl %eax, 0(%edi,%ebx) - addl $4, %edi + xorl %eax, (%ebx,%edi,4) + incl %edi cmpl %edi, %ecx jne usetsc jmp done |