-#!/usr/bin/env perl
+#! /usr/bin/env perl
+# Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License"). You may not use
+# this file except in compliance with the License. You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
$flavour = shift;
$output = shift;
$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
-open STDOUT,"| $^X ${dir}perlasm/x86_64-xlate.pl $flavour $output";
+( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
+( $xlate="${dir}perlasm/x86_64-xlate.pl" and -f $xlate) or
+die "can't locate x86_64-xlate.pl";
+
+open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\"";
+*STDOUT=*OUT;
+
+($arg1,$arg2,$arg3,$arg4)=$win64?("%rcx","%rdx","%r8", "%r9") : # Win64 order
+ ("%rdi","%rsi","%rdx","%rcx"); # Unix order
-if ($win64) { $arg1="%rcx"; $arg2="%rdx"; }
-else { $arg1="%rdi"; $arg2="%rsi"; }
print<<___;
.extern OPENSSL_cpuid_setup
+.hidden OPENSSL_cpuid_setup
.section .init
call OPENSSL_cpuid_setup
+.hidden OPENSSL_ia32cap_P
+.comm OPENSSL_ia32cap_P,16,4
+
.text
.globl OPENSSL_atomic_add
.size OPENSSL_rdtsc,.-OPENSSL_rdtsc
.globl OPENSSL_ia32_cpuid
-.type OPENSSL_ia32_cpuid,\@abi-omnipotent
+.type OPENSSL_ia32_cpuid,\@function,1
.align 16
OPENSSL_ia32_cpuid:
- mov %rbx,%r8
+.cfi_startproc
+ mov %rbx,%r8 # save %rbx
+.cfi_register %rbx,%r8
xor %eax,%eax
+ mov %rax,8(%rdi) # clear extended feature flags
cpuid
mov %eax,%r11d # max value for standard query level
# AMD specific
mov \$0x80000000,%eax
cpuid
- cmp \$0x80000008,%eax
+ cmp \$0x80000001,%eax
+ jb .Lintel
+ mov %eax,%r10d
+ mov \$0x80000001,%eax
+ cpuid
+ or %ecx,%r9d
+ and \$0x00000801,%r9d # isolate AMD XOP bit, 1<<11
+
+ cmp \$0x80000008,%r10d
jb .Lintel
mov \$0x80000008,%eax
mov \$1,%eax
cpuid
bt \$28,%edx # test hyper-threading bit
- jnc .Ldone
+ jnc .Lgeneric
shr \$16,%ebx # number of logical processors
cmp %r10b,%bl
- ja .Ldone
+ ja .Lgeneric
and \$0xefffffff,%edx # ~(1<<28)
- jmp .Ldone
+ jmp .Lgeneric
.Lintel:
cmp \$4,%r11d
.Lnocacheinfo:
mov \$1,%eax
cpuid
+ movd %eax,%xmm0 # put aside processor id
+ and \$0xbfefffff,%edx # force reserved bits to 0
cmp \$0,%r9d
jne .Lnotintel
- or \$0x00100000,%edx # use reserved 20th bit to engage RC4_CHAR
+ or \$0x40000000,%edx # set reserved bit#30 on Intel CPUs
and \$15,%ah
cmp \$15,%ah # examine Family ID
- je .Lnotintel
- or \$0x40000000,%edx # use reserved bit to skip unrolled loop
+ jne .LnotP4
+ or \$0x00100000,%edx # set reserved bit#20 to engage RC4_CHAR
+.LnotP4:
+ cmp \$6,%ah
+ jne .Lnotintel
+ and \$0x0fff0ff0,%eax
+ cmp \$0x00050670,%eax # Knights Landing
+ je .Lknights
+ cmp \$0x00080650,%eax # Knights Mill (according to sde)
+ jne .Lnotintel
+.Lknights:
+ and \$0xfbffffff,%ecx # clear XSAVE flag to mimic Silvermont
+
.Lnotintel:
bt \$28,%edx # test hyper-threading bit
- jnc .Ldone
+ jnc .Lgeneric
and \$0xefffffff,%edx # ~(1<<28)
cmp \$0,%r10d
- je .Ldone
+ je .Lgeneric
or \$0x10000000,%edx # 1<<28
shr \$16,%ebx
cmp \$1,%bl # see if cache is shared
- ja .Ldone
+ ja .Lgeneric
and \$0xefffffff,%edx # ~(1<<28)
+.Lgeneric:
+ and \$0x00000800,%r9d # isolate AMD XOP flag
+ and \$0xfffff7ff,%ecx
+ or %ecx,%r9d # merge AMD XOP flag
+
+ mov %edx,%r10d # %r9d:%r10d is copy of %ecx:%edx
+
+ cmp \$7,%r11d
+ jb .Lno_extended_info
+ mov \$7,%eax
+ xor %ecx,%ecx
+ cpuid
+ bt \$26,%r9d # check XSAVE bit, cleared on Knights
+ jc .Lnotknights
+ and \$0xfff7ffff,%ebx # clear ADCX/ADOX flag
+.Lnotknights:
+ movd %xmm0,%eax # restore processor id
+ and \$0x0fff0ff0,%eax
+ cmp \$0x00050650,%eax # Skylake-X
+ jne .Lnotskylakex
+ and \$0xfffeffff,%ebx # ~(1<<16)
+ # suppress AVX512F flag on Skylake-X
+.Lnotskylakex:
+ mov %ebx,8(%rdi) # save extended feature flags
+ mov %ecx,12(%rdi)
+.Lno_extended_info:
+
+ bt \$27,%r9d # check OSXSAVE bit
+ jnc .Lclear_avx
+ xor %ecx,%ecx # XCR0
+ .byte 0x0f,0x01,0xd0 # xgetbv
+ and \$0xe6,%eax # isolate XMM, YMM and ZMM state support
+ cmp \$0xe6,%eax
+ je .Ldone
+ andl \$0x3fdeffff,8(%rdi) # ~(1<<31|1<<30|1<<21|1<<16)
+ # clear AVX512F+BW+VL+FIMA, all of
+ # them are EVEX-encoded, which requires
+ # ZMM state support even if one uses
+ # only XMM and YMM :-(
+ and \$6,%eax # isolate XMM and YMM state support
+ cmp \$6,%eax
+ je .Ldone
+.Lclear_avx:
+ mov \$0xefffe7ff,%eax # ~(1<<28|1<<12|1<<11)
+ and %eax,%r9d # clear AVX, FMA and AMD XOP bits
+ mov \$0x3fdeffdf,%eax # ~(1<<31|1<<30|1<<21|1<<16|1<<5)
+ and %eax,8(%rdi) # clear AVX2 and AVX512* bits
.Ldone:
- shl \$32,%rcx
- mov %edx,%eax
- mov %r8,%rbx
- or %rcx,%rax
+ shl \$32,%r9
+ mov %r10d,%eax
+ mov %r8,%rbx # restore %rbx
+.cfi_restore %rbx
+ or %r9,%rax
ret
+.cfi_endproc
.size OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
.globl OPENSSL_cleanse
xor %rax,%rax
cmp \$15,$arg2
jae .Lot
+ cmp \$0,$arg2
+ je .Lret
.Little:
mov %al,($arg1)
sub \$1,$arg2
lea 1($arg1),$arg1
jnz .Little
+.Lret:
ret
.align 16
.Lot:
jne .Little
ret
.size OPENSSL_cleanse,.-OPENSSL_cleanse
+
+.globl CRYPTO_memcmp
+.type CRYPTO_memcmp,\@abi-omnipotent
+.align 16
+CRYPTO_memcmp:
+ xor %rax,%rax
+ xor %r10,%r10
+ cmp \$0,$arg3
+ je .Lno_data
+ cmp \$16,$arg3
+ jne .Loop_cmp
+ mov ($arg1),%r10
+ mov 8($arg1),%r11
+ mov \$1,$arg3
+ xor ($arg2),%r10
+ xor 8($arg2),%r11
+ or %r11,%r10
+ cmovnz $arg3,%rax
+ ret
+
+.align 16
+.Loop_cmp:
+ mov ($arg1),%r10b
+ lea 1($arg1),$arg1
+ xor ($arg2),%r10b
+ lea 1($arg2),$arg2
+ or %r10b,%al
+ dec $arg3
+ jnz .Loop_cmp
+ neg %rax
+ shr \$63,%rax
+.Lno_data:
+ ret
+.size CRYPTO_memcmp,.-CRYPTO_memcmp
___
print<<___ if (!$win64);
ret
.size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
___
+{
+my $out="%r10";
+my $cnt="%rcx";
+my $max="%r11";
+my $lasttick="%r8d";
+my $lastdiff="%r9d";
+my $redzone=win64?8:-8;
+
+print<<___;
+.globl OPENSSL_instrument_bus
+.type OPENSSL_instrument_bus,\@abi-omnipotent
+.align 16
+OPENSSL_instrument_bus:
+ mov $arg1,$out # tribute to Win64
+ mov $arg2,$cnt
+ mov $arg2,$max
+
+ rdtsc # collect 1st tick
+ mov %eax,$lasttick # lasttick = tick
+ mov \$0,$lastdiff # lastdiff = 0
+ clflush ($out)
+ .byte 0xf0 # lock
+ add $lastdiff,($out)
+ jmp .Loop
+.align 16
+.Loop: rdtsc
+ mov %eax,%edx
+ sub $lasttick,%eax
+ mov %edx,$lasttick
+ mov %eax,$lastdiff
+ clflush ($out)
+ .byte 0xf0 # lock
+ add %eax,($out)
+ lea 4($out),$out
+ sub \$1,$cnt
+ jnz .Loop
+
+ mov $max,%rax
+ ret
+.size OPENSSL_instrument_bus,.-OPENSSL_instrument_bus
+
+.globl OPENSSL_instrument_bus2
+.type OPENSSL_instrument_bus2,\@abi-omnipotent
+.align 16
+OPENSSL_instrument_bus2:
+ mov $arg1,$out # tribute to Win64
+ mov $arg2,$cnt
+ mov $arg3,$max
+ mov $cnt,$redzone(%rsp)
+
+ rdtsc # collect 1st tick
+ mov %eax,$lasttick # lasttick = tick
+ mov \$0,$lastdiff # lastdiff = 0
+
+ clflush ($out)
+ .byte 0xf0 # lock
+ add $lastdiff,($out)
+
+ rdtsc # collect 1st diff
+ mov %eax,%edx
+ sub $lasttick,%eax # diff
+ mov %edx,$lasttick # lasttick = tick
+ mov %eax,$lastdiff # lastdiff = diff
+.Loop2:
+ clflush ($out)
+ .byte 0xf0 # lock
+ add %eax,($out) # accumulate diff
+
+ sub \$1,$max
+ jz .Ldone2
+
+ rdtsc
+ mov %eax,%edx
+ sub $lasttick,%eax # diff
+ mov %edx,$lasttick # lasttick = tick
+ cmp $lastdiff,%eax
+ mov %eax,$lastdiff # lastdiff = diff
+ mov \$0,%edx
+ setne %dl
+ sub %rdx,$cnt # conditional --$cnt
+ lea ($out,%rdx,4),$out # conditional ++$out
+ jnz .Loop2
+
+.Ldone2:
+ mov $redzone(%rsp),%rax
+ sub $cnt,%rax
+ ret
+.size OPENSSL_instrument_bus2,.-OPENSSL_instrument_bus2
+___
+}
+
+sub gen_random {
+my $rdop = shift;
+print<<___;
+.globl OPENSSL_ia32_${rdop}_bytes
+.type OPENSSL_ia32_${rdop}_bytes,\@abi-omnipotent
+.align 16
+OPENSSL_ia32_${rdop}_bytes:
+ xor %rax, %rax # return value
+ cmp \$0,$arg2
+ je .Ldone_${rdop}_bytes
+
+ mov \$8,%r11
+.Loop_${rdop}_bytes:
+ ${rdop} %r10
+ jc .Lbreak_${rdop}_bytes
+ dec %r11
+ jnz .Loop_${rdop}_bytes
+ jmp .Ldone_${rdop}_bytes
+
+.align 16
+.Lbreak_${rdop}_bytes:
+ cmp \$8,$arg2
+ jb .Ltail_${rdop}_bytes
+ mov %r10,($arg1)
+ lea 8($arg1),$arg1
+ add \$8,%rax
+ sub \$8,$arg2
+ jz .Ldone_${rdop}_bytes
+ mov \$8,%r11
+ jmp .Loop_${rdop}_bytes
+
+.align 16
+.Ltail_${rdop}_bytes:
+ mov %r10b,($arg1)
+ lea 1($arg1),$arg1
+ inc %rax
+ shr \$8,%r10
+ dec $arg2
+ jnz .Ltail_${rdop}_bytes
+
+.Ldone_${rdop}_bytes:
+ xor %r10,%r10 # Clear sensitive data from register
+ ret
+.size OPENSSL_ia32_${rdop}_bytes,.-OPENSSL_ia32_${rdop}_bytes
+___
+}
+gen_random("rdrand");
+gen_random("rdseed");
close STDOUT; # flush
projects / openssl.git / blobdiff