secure/lib/libcrypto/amd64/x86_64cpuid.S

   1         # $FreeBSD$
   2
   3 .hidden OPENSSL_cpuid_setup
   4 .section        .init
   5         call    OPENSSL_cpuid_setup
   6
   7 .hidden OPENSSL_ia32cap_P
   8 .comm   OPENSSL_ia32cap_P,8,4
   9
  10 .text
  11
  12 .globl  OPENSSL_atomic_add
  13 .type   OPENSSL_atomic_add,@function
  14 .align  16
  15 OPENSSL_atomic_add:
  16         movl    (%rdi),%eax
  17 .Lspin: leaq    (%rsi,%rax,1),%r8
  18 .byte   0xf0
  19         cmpxchgl        %r8d,(%rdi)
  20         jne     .Lspin
  21         movl    %r8d,%eax
  22 .byte   0x48,0x98
  23         .byte   0xf3,0xc3
  24 .size   OPENSSL_atomic_add,.-OPENSSL_atomic_add
  25
  26 .globl  OPENSSL_rdtsc
  27 .type   OPENSSL_rdtsc,@function
  28 .align  16
  29 OPENSSL_rdtsc:
  30         rdtsc
  31         shlq    $32,%rdx
  32         orq     %rdx,%rax
  33         .byte   0xf3,0xc3
  34 .size   OPENSSL_rdtsc,.-OPENSSL_rdtsc
  35
  36 .globl  OPENSSL_ia32_cpuid
  37 .type   OPENSSL_ia32_cpuid,@function
  38 .align  16
  39 OPENSSL_ia32_cpuid:
  40         movq    %rbx,%r8
  41
  42         xorl    %eax,%eax
  43         cpuid
  44         movl    %eax,%r11d
  45
  46         xorl    %eax,%eax
  47         cmpl    $1970169159,%ebx
  48         setne   %al
  49         movl    %eax,%r9d
  50         cmpl    $1231384169,%edx
  51         setne   %al
  52         orl     %eax,%r9d
  53         cmpl    $1818588270,%ecx
  54         setne   %al
  55         orl     %eax,%r9d
  56         jz      .Lintel
  57
  58         cmpl    $1752462657,%ebx
  59         setne   %al
  60         movl    %eax,%r10d
  61         cmpl    $1769238117,%edx
  62         setne   %al
  63         orl     %eax,%r10d
  64         cmpl    $1145913699,%ecx
  65         setne   %al
  66         orl     %eax,%r10d
  67         jnz     .Lintel
  68
  69
  70         movl    $2147483648,%eax
  71         cpuid
  72         cmpl    $2147483649,%eax
  73         jb      .Lintel
  74         movl    %eax,%r10d
  75         movl    $2147483649,%eax
  76         cpuid
  77         orl     %ecx,%r9d
  78         andl    $2049,%r9d
  79
  80         cmpl    $2147483656,%r10d
  81         jb      .Lintel
  82
  83         movl    $2147483656,%eax
  84         cpuid
  85         movzbq  %cl,%r10
  86         incq    %r10
  87
  88         movl    $1,%eax
  89         cpuid
  90         btl     $28,%edx
  91         jnc     .Lgeneric
  92         shrl    $16,%ebx
  93         cmpb    %r10b,%bl
  94         ja      .Lgeneric
  95         andl    $4026531839,%edx
  96         jmp     .Lgeneric
  97
  98 .Lintel:
  99         cmpl    $4,%r11d
 100         movl    $-1,%r10d
 101         jb      .Lnocacheinfo
 102
 103         movl    $4,%eax
 104         movl    $0,%ecx
 105         cpuid
 106         movl    %eax,%r10d
 107         shrl    $14,%r10d
 108         andl    $4095,%r10d
 109
 110 .Lnocacheinfo:
 111         movl    $1,%eax
 112         cpuid
 113         andl    $3220176895,%edx
 114         cmpl    $0,%r9d
 115         jne     .Lnotintel
 116         orl     $1073741824,%edx
 117         andb    $15,%ah
 118         cmpb    $15,%ah
 119         jne     .Lnotintel
 120         orl     $1048576,%edx
 121 .Lnotintel:
 122         btl     $28,%edx
 123         jnc     .Lgeneric
 124         andl    $4026531839,%edx
 125         cmpl    $0,%r10d
 126         je      .Lgeneric
 127
 128         orl     $268435456,%edx
 129         shrl    $16,%ebx
 130         cmpb    $1,%bl
 131         ja      .Lgeneric
 132         andl    $4026531839,%edx
 133 .Lgeneric:
 134         andl    $2048,%r9d
 135         andl    $4294965247,%ecx
 136         orl     %ecx,%r9d
 137
 138         movl    %edx,%r10d
 139         btl     $27,%r9d
 140         jnc     .Lclear_avx
 141         xorl    %ecx,%ecx
 142 .byte   0x0f,0x01,0xd0
 143         andl    $6,%eax
 144         cmpl    $6,%eax
 145         je      .Ldone
 146 .Lclear_avx:
 147         movl    $4026525695,%eax
 148         andl    %eax,%r9d
 149 .Ldone:
 150         shlq    $32,%r9
 151         movl    %r10d,%eax
 152         movq    %r8,%rbx
 153         orq     %r9,%rax
 154         .byte   0xf3,0xc3
 155 .size   OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
 156
 157 .globl  OPENSSL_cleanse
 158 .type   OPENSSL_cleanse,@function
 159 .align  16
 160 OPENSSL_cleanse:
 161         xorq    %rax,%rax
 162         cmpq    $15,%rsi
 163         jae     .Lot
 164         cmpq    $0,%rsi
 165         je      .Lret
 166 .Little:
 167         movb    %al,(%rdi)
 168         subq    $1,%rsi
 169         leaq    1(%rdi),%rdi
 170         jnz     .Little
 171 .Lret:
 172         .byte   0xf3,0xc3
 173 .align  16
 174 .Lot:
 175         testq   $7,%rdi
 176         jz      .Laligned
 177         movb    %al,(%rdi)
 178         leaq    -1(%rsi),%rsi
 179         leaq    1(%rdi),%rdi
 180         jmp     .Lot
 181 .Laligned:
 182         movq    %rax,(%rdi)
 183         leaq    -8(%rsi),%rsi
 184         testq   $-8,%rsi
 185         leaq    8(%rdi),%rdi
 186         jnz     .Laligned
 187         cmpq    $0,%rsi
 188         jne     .Little
 189         .byte   0xf3,0xc3
 190 .size   OPENSSL_cleanse,.-OPENSSL_cleanse
 191 .globl  OPENSSL_wipe_cpu
 192 .type   OPENSSL_wipe_cpu,@function
 193 .align  16
 194 OPENSSL_wipe_cpu:
 195         pxor    %xmm0,%xmm0
 196         pxor    %xmm1,%xmm1
 197         pxor    %xmm2,%xmm2
 198         pxor    %xmm3,%xmm3
 199         pxor    %xmm4,%xmm4
 200         pxor    %xmm5,%xmm5
 201         pxor    %xmm6,%xmm6
 202         pxor    %xmm7,%xmm7
 203         pxor    %xmm8,%xmm8
 204         pxor    %xmm9,%xmm9
 205         pxor    %xmm10,%xmm10
 206         pxor    %xmm11,%xmm11
 207         pxor    %xmm12,%xmm12
 208         pxor    %xmm13,%xmm13
 209         pxor    %xmm14,%xmm14
 210         pxor    %xmm15,%xmm15
 211         xorq    %rcx,%rcx
 212         xorq    %rdx,%rdx
 213         xorq    %rsi,%rsi
 214         xorq    %rdi,%rdi
 215         xorq    %r8,%r8
 216         xorq    %r9,%r9
 217         xorq    %r10,%r10
 218         xorq    %r11,%r11
 219         leaq    8(%rsp),%rax
 220         .byte   0xf3,0xc3
 221 .size   OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
 222 .globl  OPENSSL_ia32_rdrand
 223 .type   OPENSSL_ia32_rdrand,@function
 224 .align  16
 225 OPENSSL_ia32_rdrand:
 226         movl    $8,%ecx
 227 .Loop_rdrand:
 228 .byte   72,15,199,240
 229         jc      .Lbreak_rdrand
 230         loop    .Loop_rdrand
 231 .Lbreak_rdrand:
 232         cmpq    $0,%rax
 233         cmoveq  %rcx,%rax
 234         .byte   0xf3,0xc3
 235 .size   OPENSSL_ia32_rdrand,.-OPENSSL_ia32_rdrand