diff options
Diffstat (limited to 'crypto/x86_64cpuid.S')
| -rw-r--r-- | crypto/x86_64cpuid.S | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/crypto/x86_64cpuid.S b/crypto/x86_64cpuid.S new file mode 100644 index 0000000..562b03a --- /dev/null +++ b/crypto/x86_64cpuid.S @@ -0,0 +1,234 @@ + +.hidden OPENSSL_cpuid_setup +.section .init + call OPENSSL_cpuid_setup + +.hidden OPENSSL_ia32cap_P +.comm OPENSSL_ia32cap_P,8,4 + +.text + +.globl OPENSSL_atomic_add +.type OPENSSL_atomic_add,@function +.align 16 +OPENSSL_atomic_add: + movl (%rdi),%eax +.Lspin: leaq (%rsi,%rax,1),%r8 +.byte 0xf0 + cmpxchgl %r8d,(%rdi) + jne .Lspin + movl %r8d,%eax +.byte 0x48,0x98 + .byte 0xf3,0xc3 +.size OPENSSL_atomic_add,.-OPENSSL_atomic_add + +.globl OPENSSL_rdtsc +.type OPENSSL_rdtsc,@function +.align 16 +OPENSSL_rdtsc: + rdtsc + shlq $32,%rdx + orq %rdx,%rax + .byte 0xf3,0xc3 +.size OPENSSL_rdtsc,.-OPENSSL_rdtsc + +.globl OPENSSL_ia32_cpuid +.type OPENSSL_ia32_cpuid,@function +.align 16 +OPENSSL_ia32_cpuid: + movq %rbx,%r8 + + xorl %eax,%eax + cpuid + movl %eax,%r11d + + xorl %eax,%eax + cmpl $1970169159,%ebx + setne %al + movl %eax,%r9d + cmpl $1231384169,%edx + setne %al + orl %eax,%r9d + cmpl $1818588270,%ecx + setne %al + orl %eax,%r9d + jz .Lintel + + cmpl $1752462657,%ebx + setne %al + movl %eax,%r10d + cmpl $1769238117,%edx + setne %al + orl %eax,%r10d + cmpl $1145913699,%ecx + setne %al + orl %eax,%r10d + jnz .Lintel + + + movl $2147483648,%eax + cpuid + cmpl $2147483649,%eax + jb .Lintel + movl %eax,%r10d + movl $2147483649,%eax + cpuid + orl %ecx,%r9d + andl $2049,%r9d + + cmpl $2147483656,%r10d + jb .Lintel + + movl $2147483656,%eax + cpuid + movzbq %cl,%r10 + incq %r10 + + movl $1,%eax + cpuid + btl $28,%edx + jnc .Lgeneric + shrl $16,%ebx + cmpb %r10b,%bl + ja .Lgeneric + andl $4026531839,%edx + jmp .Lgeneric + +.Lintel: + cmpl $4,%r11d + movl $-1,%r10d + jb .Lnocacheinfo + + movl $4,%eax + movl $0,%ecx + cpuid + movl %eax,%r10d + shrl $14,%r10d + andl $4095,%r10d + +.Lnocacheinfo: + movl $1,%eax + cpuid + andl $3220176895,%edx + cmpl $0,%r9d + jne .Lnotintel + orl $1073741824,%edx + andb $15,%ah + cmpb $15,%ah + jne .Lnotintel + orl $1048576,%edx +.Lnotintel: + btl $28,%edx + jnc .Lgeneric + andl $4026531839,%edx + cmpl $0,%r10d + je .Lgeneric + + orl $268435456,%edx + shrl $16,%ebx + cmpb $1,%bl + ja .Lgeneric + andl $4026531839,%edx +.Lgeneric: + andl $2048,%r9d + andl $4294965247,%ecx + orl %ecx,%r9d + + movl %edx,%r10d + btl $27,%r9d + jnc .Lclear_avx + xorl %ecx,%ecx +.byte 0x0f,0x01,0xd0 + andl $6,%eax + cmpl $6,%eax + je .Ldone +.Lclear_avx: + movl $4026525695,%eax + andl %eax,%r9d +.Ldone: + shlq $32,%r9 + movl %r10d,%eax + movq %r8,%rbx + orq %r9,%rax + .byte 0xf3,0xc3 +.size OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid + +.globl OPENSSL_cleanse +.type OPENSSL_cleanse,@function +.align 16 +OPENSSL_cleanse: + xorq %rax,%rax + cmpq $15,%rsi + jae .Lot + cmpq $0,%rsi + je .Lret +.Little: + movb %al,(%rdi) + subq $1,%rsi + leaq 1(%rdi),%rdi + jnz .Little +.Lret: + .byte 0xf3,0xc3 +.align 16 +.Lot: + testq $7,%rdi + jz .Laligned + movb %al,(%rdi) + leaq -1(%rsi),%rsi + leaq 1(%rdi),%rdi + jmp .Lot +.Laligned: + movq %rax,(%rdi) + leaq -8(%rsi),%rsi + testq $-8,%rsi + leaq 8(%rdi),%rdi + jnz .Laligned + cmpq $0,%rsi + jne .Little + .byte 0xf3,0xc3 +.size OPENSSL_cleanse,.-OPENSSL_cleanse +.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 + .byte 0xf3,0xc3 +.size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu +.globl OPENSSL_ia32_rdrand +.type OPENSSL_ia32_rdrand,@function +.align 16 +OPENSSL_ia32_rdrand: + movl $8,%ecx +.Loop_rdrand: +.byte 72,15,199,240 + jc .Lbreak_rdrand + loop .Loop_rdrand +.Lbreak_rdrand: + cmpq $0,%rax + cmoveq %rcx,%rax + .byte 0xf3,0xc3 +.size OPENSSL_ia32_rdrand,.-OPENSSL_ia32_rdrand |