Return an error if no recipient type matches.
[openssl.git] / crypto / x86_64cpuid.pl
index a8ee099..db5aa4a 100644 (file)
@@ -7,15 +7,25 @@ if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
 $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
@@ -43,13 +53,16 @@ OPENSSL_rdtsc:
 .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
+       mov     %rbx,%r8                # save %rbx
 
        xor     %eax,%eax
+       mov     %eax,8(%rdi)            # clear 3rd word
        cpuid
+       mov     %eax,%r11d              # max value for standard query level
+
        xor     %eax,%eax
        cmp     \$0x756e6547,%ebx       # "Genu"
        setne   %al
@@ -60,7 +73,6 @@ OPENSSL_ia32_cpuid:
        cmp     \$0x6c65746e,%ecx       # "ntel"
        setne   %al
        or      %eax,%r9d               # 0 indicates Intel CPU
-       mov     \$1,%r10d               # "number of [AMD] cores"
        jz      .Lintel
 
        cmp     \$0x68747541,%ebx       # "Auth"
@@ -74,10 +86,18 @@ OPENSSL_ia32_cpuid:
        or      %eax,%r10d              # 0 indicates AMD CPU
        jnz     .Lintel
 
+       # AMD specific
        mov     \$0x80000000,%eax
        cpuid
-       cmp     \$0x80000008,%eax
-       mov     \$1,%r10d               # "number of [AMD] cores"
+       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
@@ -85,28 +105,81 @@ OPENSSL_ia32_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
+
+       cmp     \$7,%r11d
+       jb      .Lnocacheinfo
+
+       mov     \$7,%eax
+       xor     %ecx,%ecx
+       cpuid
+       mov     %ebx,8(%rdi)
+
+.Lnocacheinfo:
        mov     \$1,%eax
        cpuid
+       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
-       j     .Lnotintel
-       or      \$0x40000000,%edx       # use reserved bit to skip unrolled loop
+       jne     .Lnotintel
+       or      \$0x00100000,%edx       # set reserved bit#20 to engage RC4_CHAR
 .Lnotintel:
        bt      \$28,%edx               # test hyper-threading bit
-       jnc     .Ldone
+       jnc     .Lgeneric
+       and     \$0xefffffff,%edx       # ~(1<<28)
+       cmp     \$0,%r10d
+       je      .Lgeneric
+
+       or      \$0x10000000,%edx       # 1<<28
        shr     \$16,%ebx
-       cmp     %r10b,%bl               # see if cache is shared
-       ja      .Ldone
+       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
+       bt      \$27,%r9d               # check OSXSAVE bit
+       jnc     .Lclear_avx
+       xor     %ecx,%ecx               # XCR0
+       .byte   0x0f,0x01,0xd0          # xgetbv
+       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
+       andl    \$0xffffffdf,8(%rdi)    # cleax AVX2, ~(1<<5)
 .Ldone:
-       shl     \$32,%rcx
-       mov     %edx,%eax
-       mov     %r8,%rbx
-       or      %rcx,%rax
+       shl     \$32,%r9
+       mov     %r10d,%eax
+       mov     %r8,%rbx                # restore %rbx
+       or      %r9,%rax
        ret
 .size  OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid
 
@@ -117,11 +190,14 @@ 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:
@@ -197,5 +273,127 @@ OPENSSL_wipe_cpu:
        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
+___
+}
+
+print<<___;
+.globl OPENSSL_ia32_rdrand
+.type  OPENSSL_ia32_rdrand,\@abi-omnipotent
+.align 16
+OPENSSL_ia32_rdrand:
+       mov     \$8,%ecx
+.Loop_rdrand:
+       rdrand  %rax
+       jc      .Lbreak_rdrand
+       loop    .Loop_rdrand
+.Lbreak_rdrand:
+       cmp     \$0,%rax
+       cmove   %rcx,%rax
+       ret
+.size  OPENSSL_ia32_rdrand,.-OPENSSL_ia32_rdrand
+
+.globl OPENSSL_ia32_rdseed
+.type  OPENSSL_ia32_rdseed,\@abi-omnipotent
+.align 16
+OPENSSL_ia32_rdseed:
+       mov     \$8,%ecx
+.Loop_rdseed:
+       rdseed  %rax
+       jc      .Lbreak_rdseed
+       loop    .Loop_rdseed
+.Lbreak_rdseed:
+       cmp     \$0,%rax
+       cmove   %rcx,%rax
+       ret
+.size  OPENSSL_ia32_rdseed,.-OPENSSL_ia32_rdseed
+___
 
 close STDOUT;  # flush