Rework build: add special cases for AIX
[openssl.git] / crypto / x86_64cpuid.pl
index 777d557..6b33737 100644 (file)
@@ -1,72 +1,56 @@
-#!/usr/bin/env perl
+#! /usr/bin/env perl
+# Copyright 2005-2018 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (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
 
-$output=shift;
-$win64a=1 if ($output =~ /win64a\.[s|asm]/);
-open STDOUT,">$output" || die "can't open $output: $!";
 
-print<<___ if(defined($win64a));
-_TEXT  SEGMENT
-PUBLIC OPENSSL_rdtsc
-ALIGN  16
-OPENSSL_rdtsc  PROC
-       rdtsc
-       shl     rdx,32
-       or      rax,rdx
-       ret
-OPENSSL_rdtsc  ENDP
-
-PUBLIC OPENSSL_atomic_add
-ALIGN  16
-OPENSSL_atomic_add     PROC
-       mov     eax,DWORD PTR[rcx]
-\$Lspin:       lea     r8,DWORD PTR[rdx+rax]
-lock   cmpxchg DWORD PTR[rcx],r8d
-       jne     \$Lspin
-       mov     eax,r8d
-       cdqe    
-       ret
-OPENSSL_atomic_add     ENDP
-
-PUBLIC OPENSSL_wipe_cpu
-ALIGN  16
-OPENSSL_wipe_cpu       PROC
-       pxor    xmm0,xmm0
-       pxor    xmm1,xmm1
-       pxor    xmm2,xmm2
-       pxor    xmm3,xmm3
-       pxor    xmm4,xmm4
-       pxor    xmm5,xmm5
-       xor     rcx,rcx
-       xor     rdx,rdx
-       xor     r8,r8
-       xor     r9,r9
-       xor     r10,r10
-       xor     r11,r11
-       lea     rax,QWORD PTR[rsp+8]
-       ret
-OPENSSL_wipe_cpu       ENDP
+$flavour = shift;
+$output  = shift;
+if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
+
+$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+( $xlate="${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
+
+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
 
-OPENSSL_ia32_cpuid     PROC
-       mov     r8,rbx
-       mov     eax,1
-       cpuid
-       shl     rcx,32
-       mov     eax,edx
-       mov     rbx,r8
-       or      rax,rcx
-       ret
-OPENSSL_ia32_cpuid     ENDP
-_TEXT  ENDS
-
-CRT\$XIU       SEGMENT
-EXTRN  OPENSSL_cpuid_setup:PROC
-DQ     OPENSSL_cpuid_setup
-CRT\$XIU       ENDS
-END
-___
-print<<___ if(!defined($win64a));
 .text
+
+.globl OPENSSL_atomic_add
+.type  OPENSSL_atomic_add,\@abi-omnipotent
+.align 16
+OPENSSL_atomic_add:
+       movl    ($arg1),%eax
+.Lspin:        leaq    ($arg2,%rax),%r8
+       .byte   0xf0            # lock
+       cmpxchgl        %r8d,($arg1)
+       jne     .Lspin
+       movl    %r8d,%eax
+       .byte   0x48,0x98       # cltq/cdqe
+       ret
+.size  OPENSSL_atomic_add,.-OPENSSL_atomic_add
+
 .globl OPENSSL_rdtsc
+.type  OPENSSL_rdtsc,\@abi-omnipotent
 .align 16
 OPENSSL_rdtsc:
        rdtsc
@@ -75,21 +59,248 @@ OPENSSL_rdtsc:
        ret
 .size  OPENSSL_rdtsc,.-OPENSSL_rdtsc
 
-.globl OPENSSL_atomic_add
-.type  OPENSSL_atomic_add,\@function
+.globl OPENSSL_ia32_cpuid
+.type  OPENSSL_ia32_cpuid,\@function,1
 .align 16
-OPENSSL_atomic_add:
-       movl    (%rdi),%eax
-.Lspin:        lea     (%rsi,%rax),%r8
-lock;  cmpxchg %r8d,(%rdi)
-       jne     .Lspin
-       mov     %r8d,%eax
-       cdqe
+OPENSSL_ia32_cpuid:
+.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
+
+       xor     %eax,%eax
+       cmp     \$0x756e6547,%ebx       # "Genu"
+       setne   %al
+       mov     %eax,%r9d
+       cmp     \$0x49656e69,%edx       # "ineI"
+       setne   %al
+       or      %eax,%r9d
+       cmp     \$0x6c65746e,%ecx       # "ntel"
+       setne   %al
+       or      %eax,%r9d               # 0 indicates Intel CPU
+       jz      .Lintel
+
+       cmp     \$0x68747541,%ebx       # "Auth"
+       setne   %al
+       mov     %eax,%r10d
+       cmp     \$0x69746E65,%edx       # "enti"
+       setne   %al
+       or      %eax,%r10d
+       cmp     \$0x444D4163,%ecx       # "cAMD"
+       setne   %al
+       or      %eax,%r10d              # 0 indicates AMD CPU
+       jnz     .Lintel
+
+       # AMD specific
+       mov     \$0x80000000,%eax
+       cpuid
+       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
+       cpuid
+       movzb   %cl,%r10                # number of cores - 1
+       inc     %r10                    # number of cores
+
+       mov     \$1,%eax
+       cpuid
+       bt      \$28,%edx               # test hyper-threading bit
+       jnc     .Lgeneric
+       shr     \$16,%ebx               # number of logical processors
+       cmp     %r10b,%bl
+       ja      .Lgeneric
+       and     \$0xefffffff,%edx       # ~(1<<28)
+       jmp     .Lgeneric
+
+.Lintel:
+       cmp     \$4,%r11d
+       mov     \$-1,%r10d
+       jb      .Lnocacheinfo
+
+       mov     \$4,%eax
+       mov     \$0,%ecx                # query L1D
+       cpuid
+       mov     %eax,%r10d
+       shr     \$14,%r10d
+       and     \$0xfff,%r10d           # number of cores -1 per L1D
+
+.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      \$0x40000000,%edx       # set reserved bit#30 on Intel CPUs
+       and     \$15,%ah
+       cmp     \$15,%ah                # examine Family ID
+       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     .Lgeneric
+       and     \$0xefffffff,%edx       # ~(1<<28)
+       cmp     \$0,%r10d
+       je      .Lgeneric
+
+       or      \$0x10000000,%edx       # 1<<28
+       shr     \$16,%ebx
+       cmp     \$1,%bl                 # see if cache is shared
+       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,%r9
+       mov     %r10d,%eax
+       mov     %r8,%rbx                # restore %rbx
+.cfi_restore   %rbx
+       or      %r9,%rax
        ret
-.size  OPENSSL_atomic_add,.-OPENSSL_atomic_add
+.cfi_endproc
+.size  OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
 
+.globl  OPENSSL_cleanse
+.type   OPENSSL_cleanse,\@abi-omnipotent
+.align  16
+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:
+       test    \$7,$arg1
+       jz      .Laligned
+       mov     %al,($arg1)
+       lea     -1($arg2),$arg2
+       lea     1($arg1),$arg1
+       jmp     .Lot
+.Laligned:
+       mov     %rax,($arg1)
+       lea     -8($arg2),$arg2
+       test    \$-8,$arg2
+       lea     8($arg1),$arg1
+       jnz     .Laligned
+       cmp     \$0,$arg2
+       jne     .Little
+       ret
+.size  OPENSSL_cleanse,.-OPENSSL_cleanse
+
+.globl  CRYPTO_memcmp
+.type   CRYPTO_memcmp,\@abi-omnipotent
+.align  16
+CRYPTO_memcmp:
+       xor     %rax,%rax
+       xor     %r10,%r10
+       cmp     \$0,$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);
 .globl OPENSSL_wipe_cpu
-.type  OPENSSL_wipe_cpu,\@function
+.type  OPENSSL_wipe_cpu,\@abi-omnipotent
 .align 16
 OPENSSL_wipe_cpu:
        pxor    %xmm0,%xmm0
@@ -108,31 +319,177 @@ OPENSSL_wipe_cpu:
        pxor    %xmm13,%xmm13
        pxor    %xmm14,%xmm14
        pxor    %xmm15,%xmm15
-       xor     %rcx,%rcx
-       xor     %rdx,%rdx
-       xor     %rsi,%rsi
-       xor     %rdi,%rdi
-       xor     %r8,%r8
-       xor     %r9,%r9
-       xor     %r10,%r10
-       xor     %r11,%r11
-       lea     8(%rsp),%rax
+       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
+       ret
+.size  OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
+___
+print<<___ if ($win64);
+.globl OPENSSL_wipe_cpu
+.type  OPENSSL_wipe_cpu,\@abi-omnipotent
+.align 16
+OPENSSL_wipe_cpu:
+       pxor    %xmm0,%xmm0
+       pxor    %xmm1,%xmm1
+       pxor    %xmm2,%xmm2
+       pxor    %xmm3,%xmm3
+       pxor    %xmm4,%xmm4
+       pxor    %xmm5,%xmm5
+       xorq    %rcx,%rcx
+       xorq    %rdx,%rdx
+       xorq    %r8,%r8
+       xorq    %r9,%r9
+       xorq    %r10,%r10
+       xorq    %r11,%r11
+       leaq    8(%rsp),%rax
        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;
 
-.globl OPENSSL_ia32_cpuid
+print<<___;
+.globl OPENSSL_instrument_bus
+.type  OPENSSL_instrument_bus,\@abi-omnipotent
 .align 16
-OPENSSL_ia32_cpuid:
-       mov     %rbx,%r8
-       mov     \$1,%eax
-       cpuid
-       shl     \$32,%rcx
-       mov     %edx,%eax
-       mov     %r8,%rbx
-       or      %rcx,%rax
+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_ia32_cpuid,.-OPENSSL_ia32_cpuid
+.size  OPENSSL_instrument_bus,.-OPENSSL_instrument_bus
 
-.section       .init
-       call    OPENSSL_cpuid_setup
+.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