third-party libs
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Benjamin Palko
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232
third-party/openssl-1.0.0d/crypto/x86_64cpuid.pl
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232
third-party/openssl-1.0.0d/crypto/x86_64cpuid.pl
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#!/usr/bin/env perl
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$flavour = shift;
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$output = shift;
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if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
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$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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open STDOUT,"| $^X ${dir}perlasm/x86_64-xlate.pl $flavour $output";
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if ($win64) { $arg1="%rcx"; $arg2="%rdx"; }
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else { $arg1="%rdi"; $arg2="%rsi"; }
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print<<___;
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.extern OPENSSL_cpuid_setup
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.section .init
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call OPENSSL_cpuid_setup
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.text
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.globl OPENSSL_atomic_add
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.type OPENSSL_atomic_add,\@abi-omnipotent
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.align 16
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OPENSSL_atomic_add:
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movl ($arg1),%eax
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.Lspin: leaq ($arg2,%rax),%r8
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.byte 0xf0 # lock
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cmpxchgl %r8d,($arg1)
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jne .Lspin
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movl %r8d,%eax
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.byte 0x48,0x98 # cltq/cdqe
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ret
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.size OPENSSL_atomic_add,.-OPENSSL_atomic_add
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.globl OPENSSL_rdtsc
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.type OPENSSL_rdtsc,\@abi-omnipotent
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.align 16
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OPENSSL_rdtsc:
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rdtsc
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shl \$32,%rdx
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or %rdx,%rax
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ret
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.size OPENSSL_rdtsc,.-OPENSSL_rdtsc
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.globl OPENSSL_ia32_cpuid
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.type OPENSSL_ia32_cpuid,\@abi-omnipotent
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.align 16
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OPENSSL_ia32_cpuid:
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mov %rbx,%r8
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xor %eax,%eax
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cpuid
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mov %eax,%r11d # max value for standard query level
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xor %eax,%eax
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cmp \$0x756e6547,%ebx # "Genu"
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setne %al
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mov %eax,%r9d
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cmp \$0x49656e69,%edx # "ineI"
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setne %al
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or %eax,%r9d
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cmp \$0x6c65746e,%ecx # "ntel"
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setne %al
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or %eax,%r9d # 0 indicates Intel CPU
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jz .Lintel
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cmp \$0x68747541,%ebx # "Auth"
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setne %al
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mov %eax,%r10d
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cmp \$0x69746E65,%edx # "enti"
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setne %al
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or %eax,%r10d
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cmp \$0x444D4163,%ecx # "cAMD"
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setne %al
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or %eax,%r10d # 0 indicates AMD CPU
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jnz .Lintel
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# AMD specific
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mov \$0x80000000,%eax
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cpuid
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cmp \$0x80000008,%eax
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jb .Lintel
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mov \$0x80000008,%eax
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cpuid
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movzb %cl,%r10 # number of cores - 1
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inc %r10 # number of cores
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mov \$1,%eax
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cpuid
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bt \$28,%edx # test hyper-threading bit
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jnc .Ldone
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shr \$16,%ebx # number of logical processors
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cmp %r10b,%bl
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ja .Ldone
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and \$0xefffffff,%edx # ~(1<<28)
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jmp .Ldone
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.Lintel:
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cmp \$4,%r11d
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mov \$-1,%r10d
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jb .Lnocacheinfo
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mov \$4,%eax
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mov \$0,%ecx # query L1D
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cpuid
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mov %eax,%r10d
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shr \$14,%r10d
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and \$0xfff,%r10d # number of cores -1 per L1D
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.Lnocacheinfo:
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mov \$1,%eax
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cpuid
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cmp \$0,%r9d
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jne .Lnotintel
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or \$0x00100000,%edx # use reserved 20th bit to engage RC4_CHAR
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and \$15,%ah
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cmp \$15,%ah # examine Family ID
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je .Lnotintel
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or \$0x40000000,%edx # use reserved bit to skip unrolled loop
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.Lnotintel:
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bt \$28,%edx # test hyper-threading bit
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jnc .Ldone
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and \$0xefffffff,%edx # ~(1<<28)
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cmp \$0,%r10d
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je .Ldone
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or \$0x10000000,%edx # 1<<28
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shr \$16,%ebx
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cmp \$1,%bl # see if cache is shared
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ja .Ldone
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and \$0xefffffff,%edx # ~(1<<28)
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.Ldone:
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shl \$32,%rcx
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mov %edx,%eax
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mov %r8,%rbx
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or %rcx,%rax
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ret
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.size OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
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.globl OPENSSL_cleanse
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.type OPENSSL_cleanse,\@abi-omnipotent
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.align 16
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OPENSSL_cleanse:
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xor %rax,%rax
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cmp \$15,$arg2
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jae .Lot
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cmp \$0,$arg2
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je .Lret
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.Little:
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mov %al,($arg1)
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sub \$1,$arg2
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lea 1($arg1),$arg1
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jnz .Little
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.Lret:
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ret
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.align 16
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.Lot:
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test \$7,$arg1
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jz .Laligned
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mov %al,($arg1)
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lea -1($arg2),$arg2
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lea 1($arg1),$arg1
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jmp .Lot
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.Laligned:
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mov %rax,($arg1)
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lea -8($arg2),$arg2
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test \$-8,$arg2
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lea 8($arg1),$arg1
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jnz .Laligned
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cmp \$0,$arg2
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jne .Little
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ret
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.size OPENSSL_cleanse,.-OPENSSL_cleanse
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___
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print<<___ if (!$win64);
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.globl OPENSSL_wipe_cpu
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.type OPENSSL_wipe_cpu,\@abi-omnipotent
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.align 16
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OPENSSL_wipe_cpu:
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pxor %xmm0,%xmm0
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pxor %xmm1,%xmm1
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pxor %xmm2,%xmm2
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pxor %xmm3,%xmm3
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pxor %xmm4,%xmm4
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pxor %xmm5,%xmm5
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pxor %xmm6,%xmm6
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pxor %xmm7,%xmm7
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pxor %xmm8,%xmm8
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pxor %xmm9,%xmm9
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pxor %xmm10,%xmm10
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pxor %xmm11,%xmm11
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pxor %xmm12,%xmm12
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pxor %xmm13,%xmm13
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pxor %xmm14,%xmm14
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pxor %xmm15,%xmm15
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xorq %rcx,%rcx
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xorq %rdx,%rdx
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xorq %rsi,%rsi
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xorq %rdi,%rdi
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xorq %r8,%r8
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xorq %r9,%r9
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xorq %r10,%r10
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xorq %r11,%r11
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leaq 8(%rsp),%rax
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ret
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.size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
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___
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print<<___ if ($win64);
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.globl OPENSSL_wipe_cpu
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.type OPENSSL_wipe_cpu,\@abi-omnipotent
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.align 16
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OPENSSL_wipe_cpu:
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pxor %xmm0,%xmm0
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pxor %xmm1,%xmm1
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pxor %xmm2,%xmm2
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pxor %xmm3,%xmm3
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pxor %xmm4,%xmm4
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pxor %xmm5,%xmm5
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xorq %rcx,%rcx
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xorq %rdx,%rdx
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xorq %r8,%r8
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xorq %r9,%r9
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xorq %r10,%r10
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xorq %r11,%r11
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leaq 8(%rsp),%rax
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ret
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.size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
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___
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close STDOUT; # flush
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