mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
1aed5e1ac2
Exteneded feature flags were not pulled on AMD processors, as result a number of extensions were effectively masked on Ryzen. Original fix for x86_64cpuid.pl addressed this problem, but messed up processor vendor detection. This fix moves extended feature detection past basic feature detection where it belongs. 32-bit counterpart is harmonized too. Reviewed-by: Rich Salz <rsalz@openssl.org> Reviewed-by: Richard Levitte <levitte@openssl.org>
521 lines
12 KiB
Raku
521 lines
12 KiB
Raku
#! /usr/bin/env perl
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# Copyright 2004-2016 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the OpenSSL license (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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push(@INC, "${dir}perlasm", "perlasm");
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require "x86asm.pl";
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$output = pop;
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open OUT,">$output";
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*STDOUT=*OUT;
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&asm_init($ARGV[0],"x86cpuid");
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for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
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&function_begin("OPENSSL_ia32_cpuid");
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&xor ("edx","edx");
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&pushf ();
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&pop ("eax");
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&mov ("ecx","eax");
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&xor ("eax",1<<21);
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&push ("eax");
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&popf ();
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&pushf ();
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&pop ("eax");
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&xor ("ecx","eax");
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&xor ("eax","eax");
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&mov ("esi",&wparam(0));
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&mov (&DWP(8,"esi"),"eax"); # clear extended feature flags
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&bt ("ecx",21);
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&jnc (&label("nocpuid"));
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&cpuid ();
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&mov ("edi","eax"); # max value for standard query level
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&xor ("eax","eax");
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&cmp ("ebx",0x756e6547); # "Genu"
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&setne (&LB("eax"));
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&mov ("ebp","eax");
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&cmp ("edx",0x49656e69); # "ineI"
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&setne (&LB("eax"));
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&or ("ebp","eax");
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&cmp ("ecx",0x6c65746e); # "ntel"
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&setne (&LB("eax"));
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&or ("ebp","eax"); # 0 indicates Intel CPU
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&jz (&label("intel"));
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&cmp ("ebx",0x68747541); # "Auth"
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&setne (&LB("eax"));
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&mov ("esi","eax");
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&cmp ("edx",0x69746E65); # "enti"
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&setne (&LB("eax"));
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&or ("esi","eax");
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&cmp ("ecx",0x444D4163); # "cAMD"
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&setne (&LB("eax"));
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&or ("esi","eax"); # 0 indicates AMD CPU
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&jnz (&label("intel"));
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# AMD specific
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&mov ("eax",0x80000000);
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&cpuid ();
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&cmp ("eax",0x80000001);
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&jb (&label("intel"));
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&mov ("esi","eax");
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&mov ("eax",0x80000001);
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&cpuid ();
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&or ("ebp","ecx");
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&and ("ebp",1<<11|1); # isolate XOP bit
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&cmp ("esi",0x80000008);
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&jb (&label("intel"));
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&mov ("eax",0x80000008);
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&cpuid ();
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&movz ("esi",&LB("ecx")); # number of cores - 1
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&inc ("esi"); # number of cores
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&mov ("eax",1);
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&xor ("ecx","ecx");
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&cpuid ();
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&bt ("edx",28);
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&jnc (&label("generic"));
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&shr ("ebx",16);
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&and ("ebx",0xff);
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&cmp ("ebx","esi");
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&ja (&label("generic"));
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&and ("edx",0xefffffff); # clear hyper-threading bit
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&jmp (&label("generic"));
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&set_label("intel");
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&cmp ("edi",4);
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&mov ("esi",-1);
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&jb (&label("nocacheinfo"));
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&mov ("eax",4);
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&mov ("ecx",0); # query L1D
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&cpuid ();
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&mov ("esi","eax");
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&shr ("esi",14);
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&and ("esi",0xfff); # number of cores -1 per L1D
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&set_label("nocacheinfo");
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&mov ("eax",1);
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&xor ("ecx","ecx");
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&cpuid ();
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&and ("edx",0xbfefffff); # force reserved bits #20, #30 to 0
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&cmp ("ebp",0);
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&jne (&label("notintel"));
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&or ("edx",1<<30); # set reserved bit#30 on Intel CPUs
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&and (&HB("eax"),15); # familiy ID
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&cmp (&HB("eax"),15); # P4?
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&jne (&label("notintel"));
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&or ("edx",1<<20); # set reserved bit#20 to engage RC4_CHAR
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&set_label("notintel");
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&bt ("edx",28); # test hyper-threading bit
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&jnc (&label("generic"));
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&and ("edx",0xefffffff);
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&cmp ("esi",0);
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&je (&label("generic"));
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&or ("edx",0x10000000);
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&shr ("ebx",16);
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&cmp (&LB("ebx"),1);
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&ja (&label("generic"));
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&and ("edx",0xefffffff); # clear hyper-threading bit if not
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&set_label("generic");
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&and ("ebp",1<<11); # isolate AMD XOP flag
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&and ("ecx",0xfffff7ff); # force 11th bit to 0
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&mov ("esi","edx"); # %ebp:%esi is copy of %ecx:%edx
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&or ("ebp","ecx"); # merge AMD XOP flag
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&cmp ("edi",7);
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&mov ("edi",&wparam(0));
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&jb (&label("no_extended_info"));
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&mov ("eax",7);
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&xor ("ecx","ecx");
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&cpuid ();
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&mov (&DWP(8,"edi"),"ebx"); # save extended feature flag
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&set_label("no_extended_info");
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&bt ("ebp",27); # check OSXSAVE bit
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&jnc (&label("clear_avx"));
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&xor ("ecx","ecx");
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&data_byte(0x0f,0x01,0xd0); # xgetbv
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&and ("eax",6);
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&cmp ("eax",6);
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&je (&label("done"));
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&cmp ("eax",2);
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&je (&label("clear_avx"));
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&set_label("clear_xmm");
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&and ("ebp",0xfdfffffd); # clear AESNI and PCLMULQDQ bits
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&and ("esi",0xfeffffff); # clear FXSR
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&set_label("clear_avx");
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&and ("ebp",0xefffe7ff); # clear AVX, FMA and AMD XOP bits
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&and (&DWP(8,"edi"),0xffffffdf); # clear AVX2
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&set_label("done");
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&mov ("eax","esi");
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&mov ("edx","ebp");
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&set_label("nocpuid");
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&function_end("OPENSSL_ia32_cpuid");
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&external_label("OPENSSL_ia32cap_P");
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&function_begin_B("OPENSSL_rdtsc","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
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&xor ("eax","eax");
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&xor ("edx","edx");
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&picmeup("ecx","OPENSSL_ia32cap_P");
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&bt (&DWP(0,"ecx"),4);
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&jnc (&label("notsc"));
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&rdtsc ();
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&set_label("notsc");
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&ret ();
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&function_end_B("OPENSSL_rdtsc");
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# This works in Ring 0 only [read DJGPP+MS-DOS+privileged DPMI host],
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# but it's safe to call it on any [supported] 32-bit platform...
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# Just check for [non-]zero return value...
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&function_begin_B("OPENSSL_instrument_halt","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
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&picmeup("ecx","OPENSSL_ia32cap_P");
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&bt (&DWP(0,"ecx"),4);
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&jnc (&label("nohalt")); # no TSC
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&data_word(0x9058900e); # push %cs; pop %eax
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&and ("eax",3);
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&jnz (&label("nohalt")); # not enough privileges
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&pushf ();
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&pop ("eax");
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&bt ("eax",9);
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&jnc (&label("nohalt")); # interrupts are disabled
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&rdtsc ();
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&push ("edx");
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&push ("eax");
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&halt ();
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&rdtsc ();
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&sub ("eax",&DWP(0,"esp"));
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&sbb ("edx",&DWP(4,"esp"));
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&add ("esp",8);
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&ret ();
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&set_label("nohalt");
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&xor ("eax","eax");
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&xor ("edx","edx");
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&ret ();
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&function_end_B("OPENSSL_instrument_halt");
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# Essentially there is only one use for this function. Under DJGPP:
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#
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# #include <go32.h>
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# ...
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# i=OPENSSL_far_spin(_dos_ds,0x46c);
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# ...
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# to obtain the number of spins till closest timer interrupt.
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&function_begin_B("OPENSSL_far_spin");
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&pushf ();
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&pop ("eax");
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&bt ("eax",9);
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&jnc (&label("nospin")); # interrupts are disabled
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&mov ("eax",&DWP(4,"esp"));
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&mov ("ecx",&DWP(8,"esp"));
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&data_word (0x90d88e1e); # push %ds, mov %eax,%ds
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&xor ("eax","eax");
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&mov ("edx",&DWP(0,"ecx"));
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&jmp (&label("spin"));
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&align (16);
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&set_label("spin");
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&inc ("eax");
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&cmp ("edx",&DWP(0,"ecx"));
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&je (&label("spin"));
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&data_word (0x1f909090); # pop %ds
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&ret ();
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&set_label("nospin");
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&xor ("eax","eax");
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&xor ("edx","edx");
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&ret ();
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&function_end_B("OPENSSL_far_spin");
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&function_begin_B("OPENSSL_wipe_cpu","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
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&xor ("eax","eax");
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&xor ("edx","edx");
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&picmeup("ecx","OPENSSL_ia32cap_P");
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&mov ("ecx",&DWP(0,"ecx"));
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&bt (&DWP(0,"ecx"),1);
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&jnc (&label("no_x87"));
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if ($sse2) {
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&and ("ecx",1<<26|1<<24); # check SSE2 and FXSR bits
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&cmp ("ecx",1<<26|1<<24);
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&jne (&label("no_sse2"));
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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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&set_label("no_sse2");
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}
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# just a bunch of fldz to zap the fp/mm bank followed by finit...
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&data_word(0xeed9eed9,0xeed9eed9,0xeed9eed9,0xeed9eed9,0x90e3db9b);
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&set_label("no_x87");
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&lea ("eax",&DWP(4,"esp"));
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&ret ();
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&function_end_B("OPENSSL_wipe_cpu");
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&function_begin_B("OPENSSL_atomic_add");
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&mov ("edx",&DWP(4,"esp")); # fetch the pointer, 1st arg
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&mov ("ecx",&DWP(8,"esp")); # fetch the increment, 2nd arg
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&push ("ebx");
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&nop ();
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&mov ("eax",&DWP(0,"edx"));
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&set_label("spin");
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&lea ("ebx",&DWP(0,"eax","ecx"));
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&nop ();
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&data_word(0x1ab10ff0); # lock; cmpxchg %ebx,(%edx) # %eax is envolved and is always reloaded
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&jne (&label("spin"));
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&mov ("eax","ebx"); # OpenSSL expects the new value
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&pop ("ebx");
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&ret ();
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&function_end_B("OPENSSL_atomic_add");
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&function_begin_B("OPENSSL_cleanse");
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&mov ("edx",&wparam(0));
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&mov ("ecx",&wparam(1));
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&xor ("eax","eax");
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&cmp ("ecx",7);
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&jae (&label("lot"));
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&cmp ("ecx",0);
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&je (&label("ret"));
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&set_label("little");
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&mov (&BP(0,"edx"),"al");
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&sub ("ecx",1);
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&lea ("edx",&DWP(1,"edx"));
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&jnz (&label("little"));
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&set_label("ret");
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&ret ();
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&set_label("lot",16);
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&test ("edx",3);
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&jz (&label("aligned"));
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&mov (&BP(0,"edx"),"al");
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&lea ("ecx",&DWP(-1,"ecx"));
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&lea ("edx",&DWP(1,"edx"));
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&jmp (&label("lot"));
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&set_label("aligned");
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&mov (&DWP(0,"edx"),"eax");
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&lea ("ecx",&DWP(-4,"ecx"));
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&test ("ecx",-4);
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&lea ("edx",&DWP(4,"edx"));
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&jnz (&label("aligned"));
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&cmp ("ecx",0);
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&jne (&label("little"));
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&ret ();
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&function_end_B("OPENSSL_cleanse");
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&function_begin_B("CRYPTO_memcmp");
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&push ("esi");
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&push ("edi");
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&mov ("esi",&wparam(0));
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&mov ("edi",&wparam(1));
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&mov ("ecx",&wparam(2));
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&xor ("eax","eax");
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&xor ("edx","edx");
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&cmp ("ecx",0);
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&je (&label("no_data"));
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&set_label("loop");
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&mov ("dl",&BP(0,"esi"));
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&lea ("esi",&DWP(1,"esi"));
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&xor ("dl",&BP(0,"edi"));
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&lea ("edi",&DWP(1,"edi"));
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&or ("al","dl");
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&dec ("ecx");
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&jnz (&label("loop"));
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&neg ("eax");
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&shr ("eax",31);
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&set_label("no_data");
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&pop ("edi");
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&pop ("esi");
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&ret ();
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&function_end_B("CRYPTO_memcmp");
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{
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my $lasttick = "esi";
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my $lastdiff = "ebx";
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my $out = "edi";
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my $cnt = "ecx";
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my $max = "ebp";
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&function_begin("OPENSSL_instrument_bus");
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&mov ("eax",0);
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if ($sse2) {
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&picmeup("edx","OPENSSL_ia32cap_P");
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&bt (&DWP(0,"edx"),4);
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&jnc (&label("nogo")); # no TSC
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&bt (&DWP(0,"edx"),19);
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&jnc (&label("nogo")); # no CLFLUSH
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&mov ($out,&wparam(0)); # load arguments
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&mov ($cnt,&wparam(1));
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# collect 1st tick
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&rdtsc ();
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&mov ($lasttick,"eax"); # lasttick = tick
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&mov ($lastdiff,0); # lastdiff = 0
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&clflush(&DWP(0,$out));
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&data_byte(0xf0); # lock
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&add (&DWP(0,$out),$lastdiff);
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&jmp (&label("loop"));
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&set_label("loop",16);
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&rdtsc ();
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&mov ("edx","eax"); # put aside tick (yes, I neglect edx)
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&sub ("eax",$lasttick); # diff
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&mov ($lasttick,"edx"); # lasttick = tick
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&mov ($lastdiff,"eax"); # lastdiff = diff
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&clflush(&DWP(0,$out));
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&data_byte(0xf0); # lock
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&add (&DWP(0,$out),"eax"); # accumulate diff
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&lea ($out,&DWP(4,$out)); # ++$out
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&sub ($cnt,1); # --$cnt
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&jnz (&label("loop"));
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&mov ("eax",&wparam(1));
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&set_label("nogo");
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}
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&function_end("OPENSSL_instrument_bus");
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&function_begin("OPENSSL_instrument_bus2");
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&mov ("eax",0);
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if ($sse2) {
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&picmeup("edx","OPENSSL_ia32cap_P");
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&bt (&DWP(0,"edx"),4);
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&jnc (&label("nogo")); # no TSC
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&bt (&DWP(0,"edx"),19);
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&jnc (&label("nogo")); # no CLFLUSH
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&mov ($out,&wparam(0)); # load arguments
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&mov ($cnt,&wparam(1));
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&mov ($max,&wparam(2));
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&rdtsc (); # collect 1st tick
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&mov ($lasttick,"eax"); # lasttick = tick
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&mov ($lastdiff,0); # lastdiff = 0
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&clflush(&DWP(0,$out));
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&data_byte(0xf0); # lock
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&add (&DWP(0,$out),$lastdiff);
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&rdtsc (); # collect 1st diff
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&mov ("edx","eax"); # put aside tick (yes, I neglect edx)
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&sub ("eax",$lasttick); # diff
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&mov ($lasttick,"edx"); # lasttick = tick
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&mov ($lastdiff,"eax"); # lastdiff = diff
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&jmp (&label("loop2"));
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&set_label("loop2",16);
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&clflush(&DWP(0,$out));
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&data_byte(0xf0); # lock
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&add (&DWP(0,$out),"eax"); # accumulate diff
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&sub ($max,1);
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&jz (&label("done2"));
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&rdtsc ();
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&mov ("edx","eax"); # put aside tick (yes, I neglect edx)
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&sub ("eax",$lasttick); # diff
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&mov ($lasttick,"edx"); # lasttick = tick
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&cmp ("eax",$lastdiff);
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&mov ($lastdiff,"eax"); # lastdiff = diff
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&mov ("edx",0);
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&setne ("dl");
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&sub ($cnt,"edx"); # conditional --$cnt
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&lea ($out,&DWP(0,$out,"edx",4)); # conditional ++$out
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&jnz (&label("loop2"));
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&set_label("done2");
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&mov ("eax",&wparam(1));
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&sub ("eax",$cnt);
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&set_label("nogo");
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}
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&function_end("OPENSSL_instrument_bus2");
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}
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sub gen_random {
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my $rdop = shift;
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&function_begin_B("OPENSSL_ia32_${rdop}");
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&mov ("ecx",8);
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&set_label("loop");
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&${rdop}("eax");
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&jc (&label("break"));
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&loop (&label("loop"));
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&set_label("break");
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&cmp ("eax",0);
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&cmove ("eax","ecx");
|
|
&ret ();
|
|
&function_end_B("OPENSSL_ia32_${rdop}");
|
|
|
|
&function_begin_B("OPENSSL_ia32_${rdop}_bytes");
|
|
&push ("edi");
|
|
&push ("ebx");
|
|
&xor ("eax","eax"); # return value
|
|
&mov ("edi",&wparam(0));
|
|
&mov ("ebx",&wparam(1));
|
|
|
|
&cmp ("ebx",0);
|
|
&je (&label("done"));
|
|
|
|
&mov ("ecx",8);
|
|
&set_label("loop");
|
|
&${rdop}("edx");
|
|
&jc (&label("break"));
|
|
&loop (&label("loop"));
|
|
&jmp (&label("done"));
|
|
|
|
&set_label("break",16);
|
|
&cmp ("ebx",4);
|
|
&jb (&label("tail"));
|
|
&mov (&DWP(0,"edi"),"edx");
|
|
&lea ("edi",&DWP(4,"edi"));
|
|
&add ("eax",4);
|
|
&sub ("ebx",4);
|
|
&jz (&label("done"));
|
|
&mov ("ecx",8);
|
|
&jmp (&label("loop"));
|
|
|
|
&set_label("tail",16);
|
|
&mov (&BP(0,"edi"),"dl");
|
|
&lea ("edi",&DWP(1,"edi"));
|
|
&inc ("eax");
|
|
&shr ("edx",8);
|
|
&dec ("ebx");
|
|
&jnz (&label("tail"));
|
|
|
|
&set_label("done");
|
|
&pop ("ebx");
|
|
&pop ("edi");
|
|
&ret ();
|
|
&function_end_B("OPENSSL_ia32_${rdop}_bytes");
|
|
}
|
|
&gen_random("rdrand");
|
|
&gen_random("rdseed");
|
|
|
|
&initseg("OPENSSL_cpuid_setup");
|
|
|
|
&hidden("OPENSSL_cpuid_setup");
|
|
&hidden("OPENSSL_ia32cap_P");
|
|
|
|
&asm_finish();
|
|
|
|
close STDOUT;
|