summaryrefslogtreecommitdiffstats
path: root/src/crypto/cpu-x86-asm.pl
diff options
context:
space:
mode:
Diffstat (limited to 'src/crypto/cpu-x86-asm.pl')
-rw-r--r--src/crypto/cpu-x86-asm.pl334
1 files changed, 0 insertions, 334 deletions
diff --git a/src/crypto/cpu-x86-asm.pl b/src/crypto/cpu-x86-asm.pl
deleted file mode 100644
index 319c436..0000000
--- a/src/crypto/cpu-x86-asm.pl
+++ /dev/null
@@ -1,334 +0,0 @@
-#!/usr/bin/env perl
-
-$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
-push(@INC, "${dir}perlasm", "perlasm");
-require "x86asm.pl";
-
-&asm_init($ARGV[0],"crypto/cpu-x86-asm");
-
-for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
-
-&function_begin("OPENSSL_ia32_cpuid");
- &xor ("edx","edx");
- &pushf ();
- &pop ("eax");
- &mov ("ecx","eax");
- &xor ("eax",1<<21);
- &push ("eax");
- &popf ();
- &pushf ();
- &pop ("eax");
- &xor ("ecx","eax");
- &xor ("eax","eax");
- &bt ("ecx",21);
- &jnc (&label("nocpuid"));
- &mov ("esi",&wparam(0));
- &mov (&DWP(8,"esi"),"eax"); # clear 3rd word
- &cpuid ();
- &mov ("edi","eax"); # max value for standard query level
-
- &xor ("eax","eax");
- &cmp ("ebx",0x756e6547); # "Genu"
- &setne (&LB("eax"));
- &mov ("ebp","eax");
- &cmp ("edx",0x49656e69); # "ineI"
- &setne (&LB("eax"));
- &or ("ebp","eax");
- &cmp ("ecx",0x6c65746e); # "ntel"
- &setne (&LB("eax"));
- &or ("ebp","eax"); # 0 indicates Intel CPU
- &jz (&label("intel"));
-
- &cmp ("ebx",0x68747541); # "Auth"
- &setne (&LB("eax"));
- &mov ("esi","eax");
- &cmp ("edx",0x69746E65); # "enti"
- &setne (&LB("eax"));
- &or ("esi","eax");
- &cmp ("ecx",0x444D4163); # "cAMD"
- &setne (&LB("eax"));
- &or ("esi","eax"); # 0 indicates AMD CPU
- &jnz (&label("intel"));
-
- # AMD specific
- &mov ("eax",0x80000000);
- &cpuid ();
- &cmp ("eax",0x80000001);
- &jb (&label("intel"));
- &mov ("esi","eax");
- &mov ("eax",0x80000001);
- &cpuid ();
- &or ("ebp","ecx");
- &and ("ebp",1<<11|1); # isolate XOP bit
- &cmp ("esi",0x80000008);
- &jb (&label("intel"));
-
- &mov ("eax",0x80000008);
- &cpuid ();
- &movz ("esi",&LB("ecx")); # number of cores - 1
- &inc ("esi"); # number of cores
-
- &mov ("eax",1);
- &xor ("ecx","ecx");
- &cpuid ();
- &bt ("edx",28);
- &jnc (&label("generic"));
- &shr ("ebx",16);
- &and ("ebx",0xff);
- &cmp ("ebx","esi");
- &ja (&label("generic"));
- &and ("edx",0xefffffff); # clear hyper-threading bit
- &jmp (&label("generic"));
-
-&set_label("intel");
- &cmp ("edi",7);
- &jb (&label("cacheinfo"));
-
- &mov ("esi",&wparam(0));
- &mov ("eax",7);
- &xor ("ecx","ecx");
- &cpuid ();
- &mov (&DWP(8,"esi"),"ebx");
-
-&set_label("cacheinfo");
- &cmp ("edi",4);
- &mov ("edi",-1);
- &jb (&label("nocacheinfo"));
-
- &mov ("eax",4);
- &mov ("ecx",0); # query L1D
- &cpuid ();
- &mov ("edi","eax");
- &shr ("edi",14);
- &and ("edi",0xfff); # number of cores -1 per L1D
-
-&set_label("nocacheinfo");
- &mov ("eax",1);
- &xor ("ecx","ecx");
- &cpuid ();
- &and ("edx",0xbfefffff); # force reserved bits #20, #30 to 0
- &cmp ("ebp",0);
- &jne (&label("notintel"));
- &or ("edx",1<<30); # set reserved bit#30 on Intel CPUs
-&set_label("notintel");
- &bt ("edx",28); # test hyper-threading bit
- &jnc (&label("generic"));
- &and ("edx",0xefffffff);
- &cmp ("edi",0);
- &je (&label("generic"));
-
- &or ("edx",0x10000000);
- &shr ("ebx",16);
- &cmp (&LB("ebx"),1);
- &ja (&label("generic"));
- &and ("edx",0xefffffff); # clear hyper-threading bit if not
-
-&set_label("generic");
- &and ("ebp",1<<11); # isolate AMD XOP flag
- &and ("ecx",0xfffff7ff); # force 11th bit to 0
- &mov ("esi","edx");
- &or ("ebp","ecx"); # merge AMD XOP flag
-
- &bt ("ecx",27); # check OSXSAVE bit
- &jnc (&label("clear_avx"));
- &xor ("ecx","ecx");
- &data_byte(0x0f,0x01,0xd0); # xgetbv
- &and ("eax",6);
- &cmp ("eax",6);
- &je (&label("done"));
- &cmp ("eax",2);
- &je (&label("clear_avx"));
-&set_label("clear_xmm");
- &and ("ebp",0xfdfffffd); # clear AESNI and PCLMULQDQ bits
- &and ("esi",0xfeffffff); # clear FXSR
-&set_label("clear_avx");
- &and ("ebp",0xefffe7ff); # clear AVX, FMA and AMD XOP bits
- &mov ("edi",&wparam(0));
- &and (&DWP(8,"edi"),0xffffffdf); # clear AVX2
-&set_label("done");
- &mov ("eax","esi");
- &mov ("edx","ebp");
-&set_label("nocpuid");
-&function_end("OPENSSL_ia32_cpuid");
-
-&external_label("OPENSSL_ia32cap_P");
-
-&function_begin_B("OPENSSL_rdtsc","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
- &xor ("eax","eax");
- &xor ("edx","edx");
- &picmeup("ecx","OPENSSL_ia32cap_P");
- &bt (&DWP(0,"ecx"),4);
- &jnc (&label("notsc"));
- &rdtsc ();
-&set_label("notsc");
- &ret ();
-&function_end_B("OPENSSL_rdtsc");
-
-# This works in Ring 0 only [read DJGPP+MS-DOS+privileged DPMI host],
-# but it's safe to call it on any [supported] 32-bit platform...
-# Just check for [non-]zero return value...
-&function_begin_B("OPENSSL_instrument_halt","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
- &picmeup("ecx","OPENSSL_ia32cap_P");
- &bt (&DWP(0,"ecx"),4);
- &jnc (&label("nohalt")); # no TSC
-
- &data_word(0x9058900e); # push %cs; pop %eax
- &and ("eax",3);
- &jnz (&label("nohalt")); # not enough privileges
-
- &pushf ();
- &pop ("eax");
- &bt ("eax",9);
- &jnc (&label("nohalt")); # interrupts are disabled
-
- &rdtsc ();
- &push ("edx");
- &push ("eax");
- &halt ();
- &rdtsc ();
-
- &sub ("eax",&DWP(0,"esp"));
- &sbb ("edx",&DWP(4,"esp"));
- &add ("esp",8);
- &ret ();
-
-&set_label("nohalt");
- &xor ("eax","eax");
- &xor ("edx","edx");
- &ret ();
-&function_end_B("OPENSSL_instrument_halt");
-
-# Essentially there is only one use for this function. Under DJGPP:
-#
-# #include <go32.h>
-# ...
-# i=OPENSSL_far_spin(_dos_ds,0x46c);
-# ...
-# to obtain the number of spins till closest timer interrupt.
-
-&function_begin_B("OPENSSL_far_spin");
- &pushf ();
- &pop ("eax");
- &bt ("eax",9);
- &jnc (&label("nospin")); # interrupts are disabled
-
- &mov ("eax",&DWP(4,"esp"));
- &mov ("ecx",&DWP(8,"esp"));
- &data_word (0x90d88e1e); # push %ds, mov %eax,%ds
- &xor ("eax","eax");
- &mov ("edx",&DWP(0,"ecx"));
- &jmp (&label("spin"));
-
- &align (16);
-&set_label("spin");
- &inc ("eax");
- &cmp ("edx",&DWP(0,"ecx"));
- &je (&label("spin"));
-
- &data_word (0x1f909090); # pop %ds
- &ret ();
-
-&set_label("nospin");
- &xor ("eax","eax");
- &xor ("edx","edx");
- &ret ();
-&function_end_B("OPENSSL_far_spin");
-
-&function_begin_B("OPENSSL_wipe_cpu","EXTRN\t_OPENSSL_ia32cap_P:DWORD");
- &xor ("eax","eax");
- &xor ("edx","edx");
- &picmeup("ecx","OPENSSL_ia32cap_P");
- &mov ("ecx",&DWP(0,"ecx"));
- &bt (&DWP(0,"ecx"),1);
- &jnc (&label("no_x87"));
- if ($sse2) {
- &and ("ecx",1<<26|1<<24); # check SSE2 and FXSR bits
- &cmp ("ecx",1<<26|1<<24);
- &jne (&label("no_sse2"));
- &pxor ("xmm0","xmm0");
- &pxor ("xmm1","xmm1");
- &pxor ("xmm2","xmm2");
- &pxor ("xmm3","xmm3");
- &pxor ("xmm4","xmm4");
- &pxor ("xmm5","xmm5");
- &pxor ("xmm6","xmm6");
- &pxor ("xmm7","xmm7");
- &set_label("no_sse2");
- }
- # just a bunch of fldz to zap the fp/mm bank followed by finit...
- &data_word(0xeed9eed9,0xeed9eed9,0xeed9eed9,0xeed9eed9,0x90e3db9b);
-&set_label("no_x87");
- &lea ("eax",&DWP(4,"esp"));
- &ret ();
-&function_end_B("OPENSSL_wipe_cpu");
-
-&function_begin_B("OPENSSL_atomic_add");
- &mov ("edx",&DWP(4,"esp")); # fetch the pointer, 1st arg
- &mov ("ecx",&DWP(8,"esp")); # fetch the increment, 2nd arg
- &push ("ebx");
- &nop ();
- &mov ("eax",&DWP(0,"edx"));
-&set_label("spin");
- &lea ("ebx",&DWP(0,"eax","ecx"));
- &nop ();
- &data_word(0x1ab10ff0); # lock; cmpxchg %ebx,(%edx) # %eax is envolved and is always reloaded
- &jne (&label("spin"));
- &mov ("eax","ebx"); # OpenSSL expects the new value
- &pop ("ebx");
- &ret ();
-&function_end_B("OPENSSL_atomic_add");
-
-# This function can become handy under Win32 in situations when
-# we don't know which calling convention, __stdcall or __cdecl(*),
-# indirect callee is using. In C it can be deployed as
-#
-#ifdef OPENSSL_CPUID_OBJ
-# type OPENSSL_indirect_call(void *f,...);
-# ...
-# OPENSSL_indirect_call(func,[up to $max arguments]);
-#endif
-#
-# (*) it's designed to work even for __fastcall if number of
-# arguments is 1 or 2!
-&function_begin_B("OPENSSL_indirect_call");
- {
- my ($max,$i)=(7,); # $max has to be chosen as 4*n-1
- # in order to preserve eventual
- # stack alignment
- &push ("ebp");
- &mov ("ebp","esp");
- &sub ("esp",$max*4);
- &mov ("ecx",&DWP(12,"ebp"));
- &mov (&DWP(0,"esp"),"ecx");
- &mov ("edx",&DWP(16,"ebp"));
- &mov (&DWP(4,"esp"),"edx");
- for($i=2;$i<$max;$i++)
- {
- # Some copies will be redundant/bogus...
- &mov ("eax",&DWP(12+$i*4,"ebp"));
- &mov (&DWP(0+$i*4,"esp"),"eax");
- }
- &call_ptr (&DWP(8,"ebp"));# make the call...
- &mov ("esp","ebp"); # ... and just restore the stack pointer
- # without paying attention to what we called,
- # (__cdecl *func) or (__stdcall *one).
- &pop ("ebp");
- &ret ();
- }
-&function_end_B("OPENSSL_indirect_call");
-
-&function_begin_B("OPENSSL_ia32_rdrand");
- &mov ("ecx",8);
-&set_label("loop");
- &rdrand ("eax");
- &jc (&label("break"));
- &loop (&label("loop"));
-&set_label("break");
- &cmp ("eax",0);
- &cmove ("eax","ecx");
- &ret ();
-&function_end_B("OPENSSL_ia32_rdrand");
-
-&hidden("OPENSSL_ia32cap_P");
-
-&asm_finish();
generated by cgit v1.1 at 2024-12-22 09:09:01 +0000