| 1 | #! /usr/bin/env perl
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| 2 | # Copyright 2005-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | #
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| 4 | # Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | # this file except in compliance with the License. You can obtain a copy
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| 6 | # in the file LICENSE in the source distribution or at
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| 7 | # https://www.openssl.org/source/license.html
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| 8 |
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| 9 |
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| 10 | # $output is the last argument if it looks like a file (it has an extension)
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| 11 | # $flavour is the first argument if it doesn't look like a file
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| 12 | $output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
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| 13 | $flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
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| 14 |
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| 15 | $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
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| 16 |
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| 17 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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| 18 | ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
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| 19 | ( $xlate="${dir}perlasm/x86_64-xlate.pl" and -f $xlate) or
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| 20 | die "can't locate x86_64-xlate.pl";
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| 21 |
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| 22 | open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""
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| 23 | or die "can't call $xlate: $!";
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| 24 | *STDOUT=*OUT;
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| 25 |
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| 26 | ($arg1,$arg2,$arg3,$arg4)=$win64?("%rcx","%rdx","%r8", "%r9") : # Win64 order
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| 27 | ("%rdi","%rsi","%rdx","%rcx"); # Unix order
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| 28 |
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| 29 | print<<___;
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| 30 | .extern OPENSSL_cpuid_setup
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| 31 | .hidden OPENSSL_cpuid_setup
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| 32 | .section .init
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| 33 | call OPENSSL_cpuid_setup
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| 34 |
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| 35 | .hidden OPENSSL_ia32cap_P
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| 36 | .comm OPENSSL_ia32cap_P,16,4
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| 37 |
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| 38 | .text
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| 39 |
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| 40 | .globl OPENSSL_atomic_add
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| 41 | .type OPENSSL_atomic_add,\@abi-omnipotent
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| 42 | .align 16
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| 43 | OPENSSL_atomic_add:
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| 44 | .cfi_startproc
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| 45 | endbranch
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| 46 | movl ($arg1),%eax
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| 47 | .Lspin: leaq ($arg2,%rax),%r8
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| 48 | .byte 0xf0 # lock
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| 49 | cmpxchgl %r8d,($arg1)
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| 50 | jne .Lspin
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| 51 | movl %r8d,%eax
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| 52 | .byte 0x48,0x98 # cltq/cdqe
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| 53 | ret
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| 54 | .cfi_endproc
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| 55 | .size OPENSSL_atomic_add,.-OPENSSL_atomic_add
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| 56 |
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| 57 | .globl OPENSSL_rdtsc
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| 58 | .type OPENSSL_rdtsc,\@abi-omnipotent
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| 59 | .align 16
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| 60 | OPENSSL_rdtsc:
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| 61 | .cfi_startproc
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| 62 | endbranch
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| 63 | rdtsc
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| 64 | shl \$32,%rdx
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| 65 | or %rdx,%rax
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| 66 | ret
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| 67 | .cfi_endproc
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| 68 | .size OPENSSL_rdtsc,.-OPENSSL_rdtsc
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| 69 |
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| 70 | .globl OPENSSL_ia32_cpuid
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| 71 | .type OPENSSL_ia32_cpuid,\@function,1
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| 72 | .align 16
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| 73 | OPENSSL_ia32_cpuid:
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| 74 | .cfi_startproc
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| 75 | endbranch
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| 76 | mov %rbx,%r8 # save %rbx
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| 77 | .cfi_register %rbx,%r8
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| 78 |
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| 79 | xor %eax,%eax
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| 80 | mov %rax,8(%rdi) # clear extended feature flags
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| 81 | cpuid
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| 82 | mov %eax,%r11d # max value for standard query level
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| 83 |
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| 84 | xor %eax,%eax
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| 85 | cmp \$0x756e6547,%ebx # "Genu"
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| 86 | setne %al
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| 87 | mov %eax,%r9d
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| 88 | cmp \$0x49656e69,%edx # "ineI"
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| 89 | setne %al
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| 90 | or %eax,%r9d
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| 91 | cmp \$0x6c65746e,%ecx # "ntel"
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| 92 | setne %al
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| 93 | or %eax,%r9d # 0 indicates Intel CPU
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| 94 | jz .Lintel
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| 95 |
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| 96 | cmp \$0x68747541,%ebx # "Auth"
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| 97 | setne %al
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| 98 | mov %eax,%r10d
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| 99 | cmp \$0x69746E65,%edx # "enti"
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| 100 | setne %al
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| 101 | or %eax,%r10d
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| 102 | cmp \$0x444D4163,%ecx # "cAMD"
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| 103 | setne %al
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| 104 | or %eax,%r10d # 0 indicates AMD CPU
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| 105 | jnz .Lintel
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| 106 |
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| 107 | # AMD specific
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| 108 | mov \$0x80000000,%eax
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| 109 | cpuid
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| 110 | cmp \$0x80000001,%eax
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| 111 | jb .Lintel
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| 112 | mov %eax,%r10d
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| 113 | mov \$0x80000001,%eax
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| 114 | cpuid
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| 115 | or %ecx,%r9d
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| 116 | and \$0x00000801,%r9d # isolate AMD XOP bit, 1<<11
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| 117 |
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| 118 | cmp \$0x80000008,%r10d
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| 119 | jb .Lintel
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| 120 |
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| 121 | mov \$0x80000008,%eax
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| 122 | cpuid
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| 123 | movzb %cl,%r10 # number of cores - 1
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| 124 | inc %r10 # number of cores
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| 125 |
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| 126 | mov \$1,%eax
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| 127 | cpuid
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| 128 | bt \$28,%edx # test hyper-threading bit
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| 129 | jnc .Lgeneric
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| 130 | shr \$16,%ebx # number of logical processors
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| 131 | cmp %r10b,%bl
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| 132 | ja .Lgeneric
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| 133 | and \$0xefffffff,%edx # ~(1<<28)
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| 134 | jmp .Lgeneric
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| 135 |
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| 136 | .Lintel:
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| 137 | cmp \$4,%r11d
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| 138 | mov \$-1,%r10d
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| 139 | jb .Lnocacheinfo
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| 140 |
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| 141 | mov \$4,%eax
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| 142 | mov \$0,%ecx # query L1D
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| 143 | cpuid
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| 144 | mov %eax,%r10d
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| 145 | shr \$14,%r10d
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| 146 | and \$0xfff,%r10d # number of cores -1 per L1D
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| 147 |
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| 148 | .Lnocacheinfo:
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| 149 | mov \$1,%eax
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| 150 | cpuid
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| 151 | movd %eax,%xmm0 # put aside processor id
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| 152 | and \$0xbfefffff,%edx # force reserved bits to 0
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| 153 | cmp \$0,%r9d
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| 154 | jne .Lnotintel
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| 155 | or \$0x40000000,%edx # set reserved bit#30 on Intel CPUs
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| 156 | and \$15,%ah
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| 157 | cmp \$15,%ah # examine Family ID
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| 158 | jne .LnotP4
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| 159 | or \$0x00100000,%edx # set reserved bit#20 to engage RC4_CHAR
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| 160 | .LnotP4:
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| 161 | cmp \$6,%ah
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| 162 | jne .Lnotintel
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| 163 | and \$0x0fff0ff0,%eax
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| 164 | cmp \$0x00050670,%eax # Knights Landing
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| 165 | je .Lknights
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| 166 | cmp \$0x00080650,%eax # Knights Mill (according to sde)
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| 167 | jne .Lnotintel
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| 168 | .Lknights:
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| 169 | and \$0xfbffffff,%ecx # clear XSAVE flag to mimic Silvermont
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| 170 |
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| 171 | .Lnotintel:
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| 172 | bt \$28,%edx # test hyper-threading bit
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| 173 | jnc .Lgeneric
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| 174 | and \$0xefffffff,%edx # ~(1<<28)
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| 175 | cmp \$0,%r10d
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| 176 | je .Lgeneric
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| 177 |
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| 178 | or \$0x10000000,%edx # 1<<28
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| 179 | shr \$16,%ebx
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| 180 | cmp \$1,%bl # see if cache is shared
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| 181 | ja .Lgeneric
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| 182 | and \$0xefffffff,%edx # ~(1<<28)
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| 183 | .Lgeneric:
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| 184 | and \$0x00000800,%r9d # isolate AMD XOP flag
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| 185 | and \$0xfffff7ff,%ecx
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| 186 | or %ecx,%r9d # merge AMD XOP flag
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| 187 |
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| 188 | mov %edx,%r10d # %r9d:%r10d is copy of %ecx:%edx
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| 189 |
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| 190 | cmp \$7,%r11d
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| 191 | jb .Lno_extended_info
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| 192 | mov \$7,%eax
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| 193 | xor %ecx,%ecx
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| 194 | cpuid
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| 195 | bt \$26,%r9d # check XSAVE bit, cleared on Knights
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| 196 | jc .Lnotknights
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| 197 | and \$0xfff7ffff,%ebx # clear ADCX/ADOX flag
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| 198 | .Lnotknights:
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| 199 | movd %xmm0,%eax # restore processor id
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| 200 | and \$0x0fff0ff0,%eax
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| 201 | cmp \$0x00050650,%eax # Skylake-X
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| 202 | jne .Lnotskylakex
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| 203 | and \$0xfffeffff,%ebx # ~(1<<16)
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| 204 | # suppress AVX512F flag on Skylake-X
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| 205 | .Lnotskylakex:
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| 206 | mov %ebx,8(%rdi) # save extended feature flags
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| 207 | mov %ecx,12(%rdi)
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| 208 | .Lno_extended_info:
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| 209 |
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| 210 | bt \$27,%r9d # check OSXSAVE bit
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| 211 | jnc .Lclear_avx
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| 212 | xor %ecx,%ecx # XCR0
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| 213 | .byte 0x0f,0x01,0xd0 # xgetbv
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| 214 | and \$0xe6,%eax # isolate XMM, YMM and ZMM state support
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| 215 | cmp \$0xe6,%eax
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| 216 | je .Ldone
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| 217 | andl \$0x3fdeffff,8(%rdi) # ~(1<<31|1<<30|1<<21|1<<16)
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| 218 | # clear AVX512F+BW+VL+IFMA, all of
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| 219 | # them are EVEX-encoded, which requires
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| 220 | # ZMM state support even if one uses
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| 221 | # only XMM and YMM :-(
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| 222 | and \$6,%eax # isolate XMM and YMM state support
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| 223 | cmp \$6,%eax
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| 224 | je .Ldone
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| 225 | .Lclear_avx:
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| 226 | mov \$0xefffe7ff,%eax # ~(1<<28|1<<12|1<<11)
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| 227 | and %eax,%r9d # clear AVX, FMA and AMD XOP bits
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| 228 | mov \$0x3fdeffdf,%eax # ~(1<<31|1<<30|1<<21|1<<16|1<<5)
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| 229 | and %eax,8(%rdi) # clear AVX2 and AVX512* bits
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| 230 | .Ldone:
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| 231 | shl \$32,%r9
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| 232 | mov %r10d,%eax
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| 233 | mov %r8,%rbx # restore %rbx
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| 234 | .cfi_restore %rbx
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| 235 | or %r9,%rax
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| 236 | ret
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| 237 | .cfi_endproc
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| 238 | .size OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
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| 239 |
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| 240 | .globl OPENSSL_cleanse
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| 241 | .type OPENSSL_cleanse,\@abi-omnipotent
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| 242 | .align 16
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| 243 | OPENSSL_cleanse:
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| 244 | .cfi_startproc
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| 245 | endbranch
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| 246 | xor %rax,%rax
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| 247 | cmp \$15,$arg2
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| 248 | jae .Lot
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| 249 | cmp \$0,$arg2
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| 250 | je .Lret
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| 251 | .Little:
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| 252 | mov %al,($arg1)
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| 253 | sub \$1,$arg2
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| 254 | lea 1($arg1),$arg1
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| 255 | jnz .Little
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| 256 | .Lret:
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| 257 | ret
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| 258 | .align 16
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| 259 | .Lot:
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| 260 | test \$7,$arg1
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| 261 | jz .Laligned
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| 262 | mov %al,($arg1)
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| 263 | lea -1($arg2),$arg2
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| 264 | lea 1($arg1),$arg1
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| 265 | jmp .Lot
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| 266 | .Laligned:
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| 267 | mov %rax,($arg1)
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| 268 | lea -8($arg2),$arg2
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| 269 | test \$-8,$arg2
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| 270 | lea 8($arg1),$arg1
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| 271 | jnz .Laligned
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| 272 | cmp \$0,$arg2
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| 273 | jne .Little
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| 274 | ret
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| 275 | .cfi_endproc
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| 276 | .size OPENSSL_cleanse,.-OPENSSL_cleanse
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| 277 |
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| 278 | .globl CRYPTO_memcmp
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| 279 | .type CRYPTO_memcmp,\@abi-omnipotent
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| 280 | .align 16
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| 281 | CRYPTO_memcmp:
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| 282 | .cfi_startproc
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| 283 | endbranch
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| 284 | xor %rax,%rax
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| 285 | xor %r10,%r10
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| 286 | cmp \$0,$arg3
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| 287 | je .Lno_data
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| 288 | cmp \$16,$arg3
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| 289 | jne .Loop_cmp
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| 290 | mov ($arg1),%r10
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| 291 | mov 8($arg1),%r11
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| 292 | mov \$1,$arg3
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| 293 | xor ($arg2),%r10
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| 294 | xor 8($arg2),%r11
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| 295 | or %r11,%r10
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| 296 | cmovnz $arg3,%rax
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| 297 | ret
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| 298 |
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| 299 | .align 16
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| 300 | .Loop_cmp:
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| 301 | mov ($arg1),%r10b
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| 302 | lea 1($arg1),$arg1
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| 303 | xor ($arg2),%r10b
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| 304 | lea 1($arg2),$arg2
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| 305 | or %r10b,%al
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| 306 | dec $arg3
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| 307 | jnz .Loop_cmp
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| 308 | neg %rax
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| 309 | shr \$63,%rax
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| 310 | .Lno_data:
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| 311 | ret
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| 312 | .cfi_endproc
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| 313 | .size CRYPTO_memcmp,.-CRYPTO_memcmp
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| 314 | ___
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| 315 |
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| 316 | print<<___ if (!$win64);
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| 317 | .globl OPENSSL_wipe_cpu
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| 318 | .type OPENSSL_wipe_cpu,\@abi-omnipotent
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| 319 | .align 16
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| 320 | OPENSSL_wipe_cpu:
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| 321 | .cfi_startproc
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| 322 | endbranch
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| 323 | pxor %xmm0,%xmm0
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| 324 | pxor %xmm1,%xmm1
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| 325 | pxor %xmm2,%xmm2
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| 326 | pxor %xmm3,%xmm3
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| 327 | pxor %xmm4,%xmm4
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| 328 | pxor %xmm5,%xmm5
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| 329 | pxor %xmm6,%xmm6
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| 330 | pxor %xmm7,%xmm7
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| 331 | pxor %xmm8,%xmm8
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| 332 | pxor %xmm9,%xmm9
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| 333 | pxor %xmm10,%xmm10
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| 334 | pxor %xmm11,%xmm11
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| 335 | pxor %xmm12,%xmm12
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| 336 | pxor %xmm13,%xmm13
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| 337 | pxor %xmm14,%xmm14
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| 338 | pxor %xmm15,%xmm15
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| 339 | xorq %rcx,%rcx
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| 340 | xorq %rdx,%rdx
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| 341 | xorq %rsi,%rsi
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| 342 | xorq %rdi,%rdi
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| 343 | xorq %r8,%r8
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| 344 | xorq %r9,%r9
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| 345 | xorq %r10,%r10
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| 346 | xorq %r11,%r11
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| 347 | leaq 8(%rsp),%rax
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| 348 | ret
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| 349 | .cfi_endproc
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| 350 | .size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
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| 351 | ___
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| 352 | print<<___ if ($win64);
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| 353 | .globl OPENSSL_wipe_cpu
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| 354 | .type OPENSSL_wipe_cpu,\@abi-omnipotent
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| 355 | .align 16
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| 356 | OPENSSL_wipe_cpu:
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| 357 | pxor %xmm0,%xmm0
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| 358 | pxor %xmm1,%xmm1
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| 359 | pxor %xmm2,%xmm2
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| 360 | pxor %xmm3,%xmm3
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| 361 | pxor %xmm4,%xmm4
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| 362 | pxor %xmm5,%xmm5
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| 363 | xorq %rcx,%rcx
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| 364 | xorq %rdx,%rdx
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| 365 | xorq %r8,%r8
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| 366 | xorq %r9,%r9
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| 367 | xorq %r10,%r10
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| 368 | xorq %r11,%r11
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| 369 | leaq 8(%rsp),%rax
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| 370 | ret
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| 371 | .size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
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| 372 | ___
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| 373 | {
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| 374 | my $out="%r10";
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| 375 | my $cnt="%rcx";
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| 376 | my $max="%r11";
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| 377 | my $lasttick="%r8d";
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| 378 | my $lastdiff="%r9d";
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| 379 | my $redzone=win64?8:-8;
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| 380 |
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| 381 | print<<___;
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| 382 | .globl OPENSSL_instrument_bus
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| 383 | .type OPENSSL_instrument_bus,\@abi-omnipotent
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| 384 | .align 16
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| 385 | OPENSSL_instrument_bus:
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| 386 | .cfi_startproc
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| 387 | endbranch
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| 388 | mov $arg1,$out # tribute to Win64
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| 389 | mov $arg2,$cnt
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| 390 | mov $arg2,$max
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| 391 |
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| 392 | rdtsc # collect 1st tick
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| 393 | mov %eax,$lasttick # lasttick = tick
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| 394 | mov \$0,$lastdiff # lastdiff = 0
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| 395 | clflush ($out)
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| 396 | .byte 0xf0 # lock
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| 397 | add $lastdiff,($out)
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| 398 | jmp .Loop
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| 399 | .align 16
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| 400 | .Loop: rdtsc
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| 401 | mov %eax,%edx
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| 402 | sub $lasttick,%eax
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| 403 | mov %edx,$lasttick
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| 404 | mov %eax,$lastdiff
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| 405 | clflush ($out)
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| 406 | .byte 0xf0 # lock
|
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| 407 | add %eax,($out)
|
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| 408 | lea 4($out),$out
|
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| 409 | sub \$1,$cnt
|
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| 410 | jnz .Loop
|
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| 411 |
|
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| 412 | mov $max,%rax
|
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| 413 | ret
|
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| 414 | .cfi_endproc
|
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| 415 | .size OPENSSL_instrument_bus,.-OPENSSL_instrument_bus
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| 416 |
|
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| 417 | .globl OPENSSL_instrument_bus2
|
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| 418 | .type OPENSSL_instrument_bus2,\@abi-omnipotent
|
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| 419 | .align 16
|
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| 420 | OPENSSL_instrument_bus2:
|
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| 421 | .cfi_startproc
|
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| 422 | endbranch
|
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| 423 | mov $arg1,$out # tribute to Win64
|
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| 424 | mov $arg2,$cnt
|
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| 425 | mov $arg3,$max
|
|---|
| 426 | mov $cnt,$redzone(%rsp)
|
|---|
| 427 |
|
|---|
| 428 | rdtsc # collect 1st tick
|
|---|
| 429 | mov %eax,$lasttick # lasttick = tick
|
|---|
| 430 | mov \$0,$lastdiff # lastdiff = 0
|
|---|
| 431 |
|
|---|
| 432 | clflush ($out)
|
|---|
| 433 | .byte 0xf0 # lock
|
|---|
| 434 | add $lastdiff,($out)
|
|---|
| 435 |
|
|---|
| 436 | rdtsc # collect 1st diff
|
|---|
| 437 | mov %eax,%edx
|
|---|
| 438 | sub $lasttick,%eax # diff
|
|---|
| 439 | mov %edx,$lasttick # lasttick = tick
|
|---|
| 440 | mov %eax,$lastdiff # lastdiff = diff
|
|---|
| 441 | .Loop2:
|
|---|
| 442 | clflush ($out)
|
|---|
| 443 | .byte 0xf0 # lock
|
|---|
| 444 | add %eax,($out) # accumulate diff
|
|---|
| 445 |
|
|---|
| 446 | sub \$1,$max
|
|---|
| 447 | jz .Ldone2
|
|---|
| 448 |
|
|---|
| 449 | rdtsc
|
|---|
| 450 | mov %eax,%edx
|
|---|
| 451 | sub $lasttick,%eax # diff
|
|---|
| 452 | mov %edx,$lasttick # lasttick = tick
|
|---|
| 453 | cmp $lastdiff,%eax
|
|---|
| 454 | mov %eax,$lastdiff # lastdiff = diff
|
|---|
| 455 | mov \$0,%edx
|
|---|
| 456 | setne %dl
|
|---|
| 457 | sub %rdx,$cnt # conditional --$cnt
|
|---|
| 458 | lea ($out,%rdx,4),$out # conditional ++$out
|
|---|
| 459 | jnz .Loop2
|
|---|
| 460 |
|
|---|
| 461 | .Ldone2:
|
|---|
| 462 | mov $redzone(%rsp),%rax
|
|---|
| 463 | sub $cnt,%rax
|
|---|
| 464 | ret
|
|---|
| 465 | .cfi_endproc
|
|---|
| 466 | .size OPENSSL_instrument_bus2,.-OPENSSL_instrument_bus2
|
|---|
| 467 | ___
|
|---|
| 468 | }
|
|---|
| 469 |
|
|---|
| 470 | sub gen_random {
|
|---|
| 471 | my $rdop = shift;
|
|---|
| 472 | print<<___;
|
|---|
| 473 | .globl OPENSSL_ia32_${rdop}_bytes
|
|---|
| 474 | .type OPENSSL_ia32_${rdop}_bytes,\@abi-omnipotent
|
|---|
| 475 | .align 16
|
|---|
| 476 | OPENSSL_ia32_${rdop}_bytes:
|
|---|
| 477 | .cfi_startproc
|
|---|
| 478 | endbranch
|
|---|
| 479 | xor %rax, %rax # return value
|
|---|
| 480 | cmp \$0,$arg2
|
|---|
| 481 | je .Ldone_${rdop}_bytes
|
|---|
| 482 |
|
|---|
| 483 | mov \$8,%r11
|
|---|
| 484 | .Loop_${rdop}_bytes:
|
|---|
| 485 | ${rdop} %r10
|
|---|
| 486 | jc .Lbreak_${rdop}_bytes
|
|---|
| 487 | dec %r11
|
|---|
| 488 | jnz .Loop_${rdop}_bytes
|
|---|
| 489 | jmp .Ldone_${rdop}_bytes
|
|---|
| 490 |
|
|---|
| 491 | .align 16
|
|---|
| 492 | .Lbreak_${rdop}_bytes:
|
|---|
| 493 | cmp \$8,$arg2
|
|---|
| 494 | jb .Ltail_${rdop}_bytes
|
|---|
| 495 | mov %r10,($arg1)
|
|---|
| 496 | lea 8($arg1),$arg1
|
|---|
| 497 | add \$8,%rax
|
|---|
| 498 | sub \$8,$arg2
|
|---|
| 499 | jz .Ldone_${rdop}_bytes
|
|---|
| 500 | mov \$8,%r11
|
|---|
| 501 | jmp .Loop_${rdop}_bytes
|
|---|
| 502 |
|
|---|
| 503 | .align 16
|
|---|
| 504 | .Ltail_${rdop}_bytes:
|
|---|
| 505 | mov %r10b,($arg1)
|
|---|
| 506 | lea 1($arg1),$arg1
|
|---|
| 507 | inc %rax
|
|---|
| 508 | shr \$8,%r10
|
|---|
| 509 | dec $arg2
|
|---|
| 510 | jnz .Ltail_${rdop}_bytes
|
|---|
| 511 |
|
|---|
| 512 | .Ldone_${rdop}_bytes:
|
|---|
| 513 | xor %r10,%r10 # Clear sensitive data from register
|
|---|
| 514 | ret
|
|---|
| 515 | .cfi_endproc
|
|---|
| 516 | .size OPENSSL_ia32_${rdop}_bytes,.-OPENSSL_ia32_${rdop}_bytes
|
|---|
| 517 | ___
|
|---|
| 518 | }
|
|---|
| 519 | gen_random("rdrand");
|
|---|
| 520 | gen_random("rdseed");
|
|---|
| 521 |
|
|---|
| 522 | close STDOUT or die "error closing STDOUT: $!"; # flush
|
|---|
