diff options
Diffstat (limited to 'openssl/vendor/0.9.8d/crypto/x86cpuid.pl')
| -rw-r--r-- | openssl/vendor/0.9.8d/crypto/x86cpuid.pl | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/openssl/vendor/0.9.8d/crypto/x86cpuid.pl b/openssl/vendor/0.9.8d/crypto/x86cpuid.pl deleted file mode 100644 index c53c9bc9..00000000 --- a/openssl/vendor/0.9.8d/crypto/x86cpuid.pl +++ /dev/null @@ -1,197 +0,0 @@ -#!/usr/bin/env perl - -push(@INC,"perlasm"); -require "x86asm.pl"; - -&asm_init($ARGV[0],"x86cpuid"); - -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"); - &bt ("ecx",21); - &jnc (&label("nocpuid")); - &mov ("eax",1); - &cpuid (); -&set_label("nocpuid"); - &mov ("eax","edx"); - &mov ("edx","ecx"); -&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) { - &bt (&DWP(0,"ecx"),26); - &jnc (&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 $i,$max=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"); - -&initseg("OPENSSL_cpuid_setup"); - -&asm_finish(); |