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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/crypto/x86_64cpuid.pl
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Diffstat (limited to 'openssl/crypto/x86_64cpuid.pl')
-rw-r--r--openssl/crypto/x86_64cpuid.pl159
1 files changed, 159 insertions, 0 deletions
diff --git a/openssl/crypto/x86_64cpuid.pl b/openssl/crypto/x86_64cpuid.pl
new file mode 100644
index 000000000..2616a03da
--- /dev/null
+++ b/openssl/crypto/x86_64cpuid.pl
@@ -0,0 +1,159 @@
+#!/usr/bin/env perl
+
+$output=shift;
+$masm=1 if ($output =~ /\.asm/);
+open STDOUT,">$output" || die "can't open $output: $!";
+
+print<<___ if(defined($masm));
+_TEXT SEGMENT
+PUBLIC OPENSSL_rdtsc
+
+PUBLIC OPENSSL_atomic_add
+ALIGN 16
+OPENSSL_atomic_add PROC
+ mov eax,DWORD PTR[rcx]
+\$Lspin: lea r8,DWORD PTR[rdx+rax]
+lock cmpxchg DWORD PTR[rcx],r8d
+ jne \$Lspin
+ mov eax,r8d
+ cdqe
+ ret
+OPENSSL_atomic_add ENDP
+
+PUBLIC OPENSSL_wipe_cpu
+ALIGN 16
+OPENSSL_wipe_cpu PROC
+ pxor xmm0,xmm0
+ pxor xmm1,xmm1
+ pxor xmm2,xmm2
+ pxor xmm3,xmm3
+ pxor xmm4,xmm4
+ pxor xmm5,xmm5
+ xor rcx,rcx
+ xor rdx,rdx
+ xor r8,r8
+ xor r9,r9
+ xor r10,r10
+ xor r11,r11
+ lea rax,QWORD PTR[rsp+8]
+ ret
+OPENSSL_wipe_cpu ENDP
+_TEXT ENDS
+
+CRT\$XIU SEGMENT
+EXTRN OPENSSL_cpuid_setup:PROC
+DQ OPENSSL_cpuid_setup
+CRT\$XIU ENDS
+
+___
+print<<___ if(!defined($masm));
+.text
+
+.globl OPENSSL_atomic_add
+.type OPENSSL_atomic_add,\@function
+.align 16
+OPENSSL_atomic_add:
+ movl (%rdi),%eax
+.Lspin: leaq (%rsi,%rax),%r8
+lock; cmpxchgl %r8d,(%rdi)
+ jne .Lspin
+ movl %r8d,%eax
+ .byte 0x48,0x98
+ ret
+.size OPENSSL_atomic_add,.-OPENSSL_atomic_add
+
+.globl OPENSSL_wipe_cpu
+.type OPENSSL_wipe_cpu,\@function
+.align 16
+OPENSSL_wipe_cpu:
+ pxor %xmm0,%xmm0
+ pxor %xmm1,%xmm1
+ pxor %xmm2,%xmm2
+ pxor %xmm3,%xmm3
+ pxor %xmm4,%xmm4
+ pxor %xmm5,%xmm5
+ pxor %xmm6,%xmm6
+ pxor %xmm7,%xmm7
+ pxor %xmm8,%xmm8
+ pxor %xmm9,%xmm9
+ pxor %xmm10,%xmm10
+ pxor %xmm11,%xmm11
+ pxor %xmm12,%xmm12
+ pxor %xmm13,%xmm13
+ pxor %xmm14,%xmm14
+ pxor %xmm15,%xmm15
+ xorq %rcx,%rcx
+ xorq %rdx,%rdx
+ xorq %rsi,%rsi
+ xorq %rdi,%rdi
+ xorq %r8,%r8
+ xorq %r9,%r9
+ xorq %r10,%r10
+ xorq %r11,%r11
+ leaq 8(%rsp),%rax
+ ret
+.size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
+
+.section .init
+ call OPENSSL_cpuid_setup
+
+___
+
+open STDOUT,"| $^X perlasm/x86_64-xlate.pl $output";
+print<<___;
+.text
+
+.globl OPENSSL_rdtsc
+.type OPENSSL_rdtsc,\@abi-omnipotent
+.align 16
+OPENSSL_rdtsc:
+ rdtsc
+ shl \$32,%rdx
+ or %rdx,%rax
+ ret
+.size OPENSSL_rdtsc,.-OPENSSL_rdtsc
+
+.globl OPENSSL_ia32_cpuid
+.type OPENSSL_ia32_cpuid,\@abi-omnipotent
+.align 16
+OPENSSL_ia32_cpuid:
+ mov %rbx,%r8
+
+ xor %eax,%eax
+ cpuid
+ xor %eax,%eax
+ cmp \$0x756e6547,%ebx # "Genu"
+ setne %al
+ mov %eax,%r9d
+ cmp \$0x49656e69,%edx # "ineI"
+ setne %al
+ or %eax,%r9d
+ cmp \$0x6c65746e,%ecx # "ntel"
+ setne %al
+ or %eax,%r9d
+
+ mov \$1,%eax
+ cpuid
+ cmp \$0,%r9d
+ jne .Lnotintel
+ or \$0x00100000,%edx # use reserved 20th bit to engage RC4_CHAR
+ and \$15,%ah
+ cmp \$15,%ah # examine Family ID
+ je .Lnotintel
+ or \$0x40000000,%edx # use reserved bit to skip unrolled loop
+.Lnotintel:
+ bt \$28,%edx # test hyper-threading bit
+ jnc .Ldone
+ shr \$16,%ebx
+ cmp \$1,%bl # see if cache is shared
+ ja .Ldone
+ and \$0xefffffff,%edx # ~(1<<28)
+.Ldone:
+ shl \$32,%rcx
+ mov %edx,%eax
+ mov %r8,%rbx
+ or %rcx,%rax
+ ret
+.size OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
+___
+close STDOUT; # flush