ms/uplink-x86_64.pl

   1 #! /usr/bin/env perl
   2 # Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the Apache License 2.0 (the "License").  You may not use
   5 # this file except in compliance with the License.  You can obtain a copy
   6 # in the file LICENSE in the source distribution or at
   7 # https://www.openssl.org/source/license.html
   8
   9 # $output is the last argument if it looks like a file (it has an extension)
  10 $output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
  11
  12 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
  13 open OUT,"| \"$^X\" \"${dir}../crypto/perlasm/x86_64-xlate.pl\" \"$output\""
  14     or die "can't call ${dir}../crypto/perlasm/x86_64-xlate.pl: $!";
  15 *STDOUT=*OUT;
  16 push(@INC,"${dir}.");
  17
  18 require "uplink-common.pl";
  19
  20 $prefix="_lazy";
  21
  22 print <<___;
  23 .text
  24 .extern OPENSSL_Uplink
  25 .globl  OPENSSL_UplinkTable
  26 ___
  27 for ($i=1;$i<=$N;$i++) {
  28 print <<___;
  29 .type   $prefix${i},\@abi-omnipotent
  30 .align  16
  31 $prefix${i}:
  32         .byte   0x48,0x83,0xEC,0x28     # sub rsp,40
  33         mov     %rcx,48(%rsp)
  34         mov     %rdx,56(%rsp)
  35         mov     %r8,64(%rsp)
  36         mov     %r9,72(%rsp)
  37         lea     OPENSSL_UplinkTable(%rip),%rcx
  38         mov     \$$i,%rdx
  39         call    OPENSSL_Uplink
  40         mov     48(%rsp),%rcx
  41         mov     56(%rsp),%rdx
  42         mov     64(%rsp),%r8
  43         mov     72(%rsp),%r9
  44         lea     OPENSSL_UplinkTable(%rip),%rax
  45         add     \$40,%rsp
  46         jmp     *8*$i(%rax)
  47 $prefix${i}_end:
  48 .size   $prefix${i},.-$prefix${i}
  49 ___
  50 }
  51 print <<___;
  52 .data
  53 OPENSSL_UplinkTable:
  54         .quad   $N
  55 ___
  56 for ($i=1;$i<=$N;$i++) {   print "      .quad   $prefix$i\n";   }
  57 print <<___;
  58 .section        .pdata,"r"
  59 .align          4
  60 ___
  61 for ($i=1;$i<=$N;$i++) {
  62 print <<___;
  63         .rva    $prefix${i},$prefix${i}_end,${prefix}_unwind_info
  64 ___
  65 }
  66 print <<___;
  67 .section        .xdata,"r"
  68 .align          8
  69 ${prefix}_unwind_info:
  70         .byte   0x01,0x04,0x01,0x00
  71         .byte   0x04,0x42,0x00,0x00
  72 ___
  73
  74 close STDOUT;