924 lines
20 KiB
Text
924 lines
20 KiB
Text
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#!/usr/bin/perl
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#
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# This file is part of Cygwin.
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#
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# This software is a copyrighted work licensed under the terms of the
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# Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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# details.
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#
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use strict;
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use integer;
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use Getopt::Long;
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sub cleanup(@);
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my $cpu;
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my $output_def;
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my $tls_offsets;
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GetOptions('cpu=s'=>\$cpu, 'output-def=s'=>\$output_def, 'tlsoffsets=s'=>\$tls_offsets);
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$main::first = 0;
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if (!defined($cpu) || !defined($output_def) || !defined($tls_offsets)) {
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die "$0: missing required option\n";
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}
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require $tls_offsets;
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my $is64bit = $cpu eq 'x86_64';
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my $sym_prefix = $is64bit ? '' : '_';
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my @top = ();
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while (<>) {
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push(@top, cleanup $_);
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last if /^\s*exports$/oi;
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}
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my @in = cleanup <>;
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my %sigfe = ();
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my @data = ();
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my @nosigfuncs = ();
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my @text = ();
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for (@in) {
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chomp;
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s/\s+DATA$//o and do {
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push @data, $_;
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next;
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};
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if (/=/o) {
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if (s/\s+NOSIGFE\s*$//) {
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# nothing
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} elsif (s/\s+SIGFE(_MAYBE)?$//) {
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my $func = (split(' '))[2];
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my $maybe = (defined($1) ? lc $1 : '') . '_';
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$sigfe{$func} = '_sigfe' . $maybe . $func;
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}
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} else {
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my ($func, $sigfe) = m%^\s*(\S+)(?:\s+((?:NO)?SIGFE(?:_MAYBE)?))?$%o;
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if (defined($sigfe) && $sigfe =~ /^NO/o) {
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$_ = $func;
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} else {
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$sigfe ||= 'sigfe';
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$_ = '_' . lc($sigfe) . '_' . $func;
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$sigfe{$func} = $_;
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$_ = $func . ' = ' . $_;
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}
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}
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s/(\S)\s+(\S)/$1 $2/go;
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s/(\S)\s+$/$1/o;
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s/^\s+(\S)/$1/o;
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push @text, $_;
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}
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for (@text) {
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my ($alias, $func) = /^(\S+)\s+=\s+(\S+)\s*$/o;
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$_ = $alias . ' = ' . $sigfe{$func}
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if defined($func) && $sigfe{$func};
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}
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open OUT, '>', $output_def or die "$0: couldn't open \"$output_def\" - $!\n";
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push @top, (map {$_ . " DATA\n"} @data), (map {$_ . "\n"} @text);
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print OUT @top;
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close OUT;
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open SIGFE, '>', 'sigfe.s' or die "$0: couldn't open 'sigfe.s' file for writing - $!\n";
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for my $k (sort keys %sigfe) {
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print SIGFE fefunc($k, $sigfe{$k});
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}
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close SIGFE;
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sub fefunc {
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my $func = $sym_prefix . shift;
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my $fe = $sym_prefix . shift;
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my $sigfe_func;
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if ($is64bit) {
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$sigfe_func = ($fe =~ /^(.*)_${func}$/)[0];
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} else {
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$sigfe_func = ($fe =~ /^(.*)${func}$/)[0];
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}
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my $extra;
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my $res;
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if ($is64bit) {
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$res = <<EOF;
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.extern $func
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.global $fe
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.seh_proc $fe
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$fe:
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leaq $func(%rip),%r10
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pushq %r10
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.seh_pushreg %r10
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.seh_endprologue
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jmp $sigfe_func
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.seh_endproc
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EOF
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} else {
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$res = <<EOF;
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.extern $func
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.global $fe
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$fe:
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pushl \$$func
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jmp $sigfe_func
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EOF
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}
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if (!$main::first++) {
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if ($is64bit) {
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$res = <<EOF . longjmp () . $res;
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.text
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.seh_proc _sigfe_maybe
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_sigfe_maybe: # stack is aligned on entry!
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.seh_endprologue
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movq %gs:8,%r10 # location of bottom of stack
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leaq $tls::initialized(%r10),%r11 # where we will be looking
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cmpq %r11,%rsp # stack loc > than tls
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jge 0f # yep. we don't have a tls.
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movl $tls::initialized(%r10),%r11d
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cmpl \$0xc763173f,%r11d # initialized?
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je 1f
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0: ret
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.seh_endproc
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.seh_proc _sigfe
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_sigfe: # stack is aligned on entry!
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.seh_endprologue
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movq %gs:8,%r10 # location of bottom of stack
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1: movl \$1,%r11d # potential lock value
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xchgl %r11d,$tls::stacklock(%r10) # see if we can grab it
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movl %r11d,$tls::spinning(%r10) # flag if we are waiting for lock
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testl %r11d,%r11d # it will be zero
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jz 2f # if so
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pause
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jmp 1b # loop
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2: movq \$8,%rax # have the lock, now increment the
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xaddq %rax,$tls::stackptr(%r10) # stack pointer and get pointer
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leaq _sigbe(%rip),%r11 # new place to return to
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xchgq %r11,8(%rsp) # exchange with real return value
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movq %r11,(%rax) # store real return value on alt stack
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incl $tls::incyg(%r10)
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decl $tls::stacklock(%r10) # remove lock
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popq %rax # pop real function address from stack
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jmp *%rax # and jmp to it
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.seh_endproc
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.global _sigbe
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.seh_proc _sigbe
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_sigbe: # return here after cygwin syscall
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# stack is aligned on entry!
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.seh_endprologue
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movq %gs:8,%r10 # address of bottom of tls
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1: movl \$1,%r11d # potential lock value
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xchgl %r11d,$tls::stacklock(%r10) # see if we can grab it
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movl %r11d,$tls::spinning(%r10) # flag if we are waiting for lock
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testl %r11d,%r11d # it will be zero
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jz 2f # if so
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pause
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jmp 1b # and loop
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2: movq \$-8,%r11 # now decrement aux stack
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xaddq %r11,$tls::stackptr(%r10) # and get pointer
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movq -8(%r11),%r11 # get return address from signal stack
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decl $tls::incyg(%r10)
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decl $tls::stacklock(%r10) # release lock
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jmp *%r11 # "return" to caller
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.seh_endproc
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.global sigdelayed
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.seh_proc sigdelayed
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sigdelayed:
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pushq %r10 # used for return address injection
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.seh_pushreg %r10
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pushq %rbp
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.seh_pushreg %rbp
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movq %rsp,%rbp
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pushf
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.seh_pushreg %rax # fake, there's no .seh_pushreg for the flags
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# stack is aligned or unaligned on entry!
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# make sure it is aligned from here on
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# We could be called from an interrupted thread which doesn't know
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# about his fate, so save and restore everything and the kitchen sink.
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andq \$0xfffffffffffffff0,%rsp
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.seh_setframe %rbp,0
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pushq %r15
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.seh_pushreg %r15
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pushq %r14
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.seh_pushreg %r14
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pushq %r13
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.seh_pushreg %r13
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pushq %r12
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.seh_pushreg %r12
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pushq %r11
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.seh_pushreg %r11
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pushq %r9
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.seh_pushreg %r9
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pushq %r8
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.seh_pushreg %r8
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pushq %rsi
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.seh_pushreg %rsi
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pushq %rdi
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.seh_pushreg %rdi
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pushq %rdx
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.seh_pushreg %rdx
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pushq %rcx
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.seh_pushreg %rcx
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pushq %rbx
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.seh_pushreg %rbx
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pushq %rax
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.seh_pushreg %rax
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subq \$0x128,%rsp
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.seh_stackalloc 0x128
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stmxcsr 0x124(%rsp)
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fnstcw 0x120(%rsp)
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movdqa %xmm15,0x110(%rsp)
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movdqa %xmm14,0x100(%rsp)
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movdqa %xmm13,0xf0(%rsp)
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movdqa %xmm12,0xe0(%rsp)
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movdqa %xmm11,0xd0(%rsp)
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movdqa %xmm10,0xc0(%rsp)
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movdqa %xmm9,0xb0(%rsp)
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movdqa %xmm8,0xa0(%rsp)
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movdqa %xmm7,0x90(%rsp)
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movdqa %xmm6,0x80(%rsp)
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movdqa %xmm5,0x70(%rsp)
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movdqa %xmm4,0x60(%rsp)
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movdqa %xmm3,0x50(%rsp)
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movdqa %xmm2,0x40(%rsp)
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movdqa %xmm1,0x30(%rsp)
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movdqa %xmm0,0x20(%rsp)
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.seh_endprologue
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movq %gs:8,%r12 # get tls
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movl $tls::saved_errno(%r12),%r15d # temporarily save saved_errno
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movq \$$tls::start_offset,%rcx # point to beginning of tls block
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addq %r12,%rcx # and store as first arg to method
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call _ZN7_cygtls19call_signal_handlerEv # call handler
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1: movl \$1,%r11d # potential lock value
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xchgl %r11d,$tls::stacklock(%r12) # see if we can grab it
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movl %r11d,$tls::spinning(%r12) # flag if we are waiting for lock
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testl %r11d,%r11d # it will be zero
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jz 2f # if so
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pause
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jmp 1b # and loop
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2: testl %r15d,%r15d # was saved_errno < 0
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jl 3f # yup. ignore it
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movq $tls::errno_addr(%r12),%r11
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movl %r15d,(%r11)
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3: movq \$-8,%r11 # now decrement aux stack
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xaddq %r11,$tls::stackptr(%r12) # and get pointer
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xorq %r10,%r10
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xchgq %r10,-8(%r11) # get return address from signal stack
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xorl %r11d,%r11d
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movl %r11d,$tls::incyg(%r12)
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movl %r11d,$tls::stacklock(%r12) # unlock
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movdqa 0x20(%rsp),%xmm0
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movdqa 0x30(%rsp),%xmm1
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movdqa 0x40(%rsp),%xmm2
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movdqa 0x50(%rsp),%xmm3
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movdqa 0x60(%rsp),%xmm4
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movdqa 0x70(%rsp),%xmm5
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movdqa 0x80(%rsp),%xmm6
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movdqa 0x90(%rsp),%xmm7
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movdqa 0xa0(%rsp),%xmm8
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movdqa 0xb0(%rsp),%xmm9
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movdqa 0xc0(%rsp),%xmm10
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movdqa 0xd0(%rsp),%xmm11
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movdqa 0xe0(%rsp),%xmm12
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movdqa 0xf0(%rsp),%xmm13
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movdqa 0x100(%rsp),%xmm14
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movdqa 0x110(%rsp),%xmm15
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fninit
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fldcw 0x120(%rsp)
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ldmxcsr 0x124(%rsp)
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addq \$0x128,%rsp
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popq %rax
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popq %rbx
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popq %rcx
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popq %rdx
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popq %rdi
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popq %rsi
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popq %r8
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popq %r9
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popq %r11
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popq %r12
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popq %r13
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popq %r14
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popq %r15
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movq %rbp,%rsp
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subq \$8, %rsp
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popf
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popq %rbp
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xchgq %r10,(%rsp)
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ret
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.seh_endproc
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_sigdelayed_end:
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.global _sigdelayed_end
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# _cygtls::pop
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.global _ZN7_cygtls3popEv
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.seh_proc _ZN7_cygtls3popEv
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_ZN7_cygtls3popEv:
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.seh_endprologue
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movq \$-8,%r11
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xaddq %r11,$tls::pstackptr(%rcx)
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movq -8(%r11),%rax
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ret
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.seh_endproc
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# _cygtls::lock
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.global _ZN7_cygtls4lockEv
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.seh_proc _ZN7_cygtls4lockEv
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_ZN7_cygtls4lockEv:
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pushq %r12
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.seh_pushreg %r12
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.seh_endprologue
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movq %rcx,%r12
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1: movl \$1,%r11d
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xchgl %r11d,$tls::pstacklock(%r12)
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testl %r11d,%r11d
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jz 2f
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pause
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jmp 1b
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2: popq %r12
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ret
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.seh_endproc
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# _cygtls::unlock
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.global _ZN7_cygtls6unlockEv
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.seh_proc _ZN7_cygtls6unlockEv
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_ZN7_cygtls6unlockEv:
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.seh_endprologue
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decl $tls::pstacklock(%rcx)
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ret
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.seh_endproc
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|
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# _cygtls::locked
|
||
|
|
.global _ZN7_cygtls6lockedEv
|
||
|
|
.seh_proc _ZN7_cygtls6lockedEv
|
||
|
|
_ZN7_cygtls6lockedEv:
|
||
|
|
.seh_endprologue
|
||
|
|
movl $tls::pstacklock(%rcx),%eax
|
||
|
|
ret
|
||
|
|
.seh_endproc
|
||
|
|
|
||
|
|
.seh_proc stabilize_sig_stack
|
||
|
|
stabilize_sig_stack:
|
||
|
|
pushq %r12
|
||
|
|
.seh_pushreg %r12
|
||
|
|
subq \$0x20,%rsp
|
||
|
|
.seh_stackalloc 32
|
||
|
|
.seh_endprologue
|
||
|
|
movq %gs:8,%r12
|
||
|
|
1: movl \$1,%r10d
|
||
|
|
xchgl %r10d,$tls::stacklock(%r12)
|
||
|
|
movl %r10d,$tls::spinning(%r12) # flag if we are waiting for lock
|
||
|
|
testl %r10d,%r10d
|
||
|
|
jz 2f
|
||
|
|
pause
|
||
|
|
jmp 1b
|
||
|
|
2: incl $tls::incyg(%r12)
|
||
|
|
cmpl \$0,$tls::sig(%r12)
|
||
|
|
jz 3f
|
||
|
|
decl $tls::stacklock(%r12) # unlock
|
||
|
|
movq \$$tls::start_offset,%rcx # point to beginning
|
||
|
|
addq %r12,%rcx # of tls block
|
||
|
|
call _ZN7_cygtls19call_signal_handlerEv
|
||
|
|
jmp 1b
|
||
|
|
3: decl $tls::incyg(%r12)
|
||
|
|
addq \$0x20,%rsp
|
||
|
|
movq %r12,%r11 # return tls addr in r11
|
||
|
|
popq %r12
|
||
|
|
ret
|
||
|
|
.seh_endproc
|
||
|
|
EOF
|
||
|
|
} else {
|
||
|
|
$res = <<EOF . longjmp () . $res;
|
||
|
|
.text
|
||
|
|
|
||
|
|
__sigfe_maybe:
|
||
|
|
pushl %ebx
|
||
|
|
pushl %edx
|
||
|
|
movl %fs:4,%ebx # location of bottom of stack
|
||
|
|
addl \$$tls::initialized,%ebx # where we will be looking
|
||
|
|
cmpl %ebx,%esp # stack loc > than tls
|
||
|
|
jge 0f # yep. we don't have a tls.
|
||
|
|
subl \$$tls::initialized,%ebx # where we will be looking
|
||
|
|
movl $tls::initialized(%ebx),%eax
|
||
|
|
cmpl \$0xc763173f,%eax # initialized?
|
||
|
|
je 1f
|
||
|
|
0: popl %edx
|
||
|
|
popl %ebx
|
||
|
|
ret
|
||
|
|
|
||
|
|
__sigfe:
|
||
|
|
pushl %ebx
|
||
|
|
pushl %edx
|
||
|
|
movl %fs:4,%ebx # location of bottom of stack
|
||
|
|
1: movl \$1,%eax # potential lock value
|
||
|
|
xchgl %eax,$tls::stacklock(%ebx) # see if we can grab it
|
||
|
|
movl %eax,$tls::spinning(%ebx) # flag if we are waiting for lock
|
||
|
|
testl %eax,%eax # it will be zero
|
||
|
|
jz 2f # if so
|
||
|
|
call _yield # should be a short-time thing, so
|
||
|
|
jmp 1b # sleep and loop
|
||
|
|
2: movl \$4,%eax # have the lock, now increment the
|
||
|
|
xadd %eax,$tls::stackptr(%ebx) # stack pointer and get pointer
|
||
|
|
leal __sigbe,%edx # new place to return to
|
||
|
|
xchgl %edx,12(%esp) # exchange with real return value
|
||
|
|
movl %edx,(%eax) # store real return value on alt stack
|
||
|
|
incl $tls::incyg(%ebx)
|
||
|
|
decl $tls::stacklock(%ebx) # remove lock
|
||
|
|
popl %edx # restore saved value
|
||
|
|
popl %ebx
|
||
|
|
ret
|
||
|
|
|
||
|
|
.global __sigbe
|
||
|
|
__sigbe: # return here after cygwin syscall
|
||
|
|
pushl %eax # don't clobber
|
||
|
|
pushl %ebx # tls pointer
|
||
|
|
1: movl %fs:4,%ebx # address of bottom of tls
|
||
|
|
movl \$1,%eax # potential lock value
|
||
|
|
xchgl %eax,$tls::stacklock(%ebx) # see if we can grab it
|
||
|
|
movl %eax,$tls::spinning(%ebx) # flag if we are waiting for lock
|
||
|
|
testl %eax,%eax # it will be zero
|
||
|
|
jz 2f # if so
|
||
|
|
call _yield # sleep
|
||
|
|
jmp 1b # and loop
|
||
|
|
2: movl \$-4,%eax # now decrement aux stack
|
||
|
|
xadd %eax,$tls::stackptr(%ebx) # and get pointer
|
||
|
|
movl -4(%eax),%eax # get return address from signal stack
|
||
|
|
xchgl %eax,4(%esp) # swap return address with saved eax
|
||
|
|
decl $tls::incyg(%ebx)
|
||
|
|
decl $tls::stacklock(%ebx) # release lock
|
||
|
|
popl %ebx
|
||
|
|
ret
|
||
|
|
|
||
|
|
.global _sigdelayed
|
||
|
|
_sigdelayed:
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
# We could be called from an interrupted thread which doesn't know
|
||
|
|
# about his fate, so save and restore everything and the kitchen sink.
|
||
|
|
pushf
|
||
|
|
pushl %esi
|
||
|
|
pushl %edi
|
||
|
|
pushl %edx
|
||
|
|
pushl %ecx
|
||
|
|
pushl %ebx
|
||
|
|
pushl %eax
|
||
|
|
subl \$0x84,%esp
|
||
|
|
fnstcw 0x80(%esp)
|
||
|
|
movdqu %xmm7,0x70(%esp)
|
||
|
|
movdqu %xmm6,0x60(%esp)
|
||
|
|
movdqu %xmm5,0x50(%esp)
|
||
|
|
movdqu %xmm4,0x40(%esp)
|
||
|
|
movdqu %xmm3,0x30(%esp)
|
||
|
|
movdqu %xmm2,0x20(%esp)
|
||
|
|
movdqu %xmm1,0x10(%esp)
|
||
|
|
movdqu %xmm0,(%esp)
|
||
|
|
movl %fs:4,%ebx # get tls
|
||
|
|
pushl $tls::saved_errno(%ebx) # saved errno
|
||
|
|
|
||
|
|
movl \$$tls::start_offset,%eax # point to beginning
|
||
|
|
addl %ebx,%eax # of tls block
|
||
|
|
call __ZN7_cygtls19call_signal_handlerEv\@4 # call handler
|
||
|
|
|
||
|
|
movl %fs:4,%ebx # reget tls
|
||
|
|
1: movl \$1,%eax # potential lock value
|
||
|
|
xchgl %eax,$tls::stacklock(%ebx) # see if we can grab it
|
||
|
|
movl %eax,$tls::spinning(%ebx) # flag if we are waiting for lock
|
||
|
|
testl %eax,%eax # it will be zero
|
||
|
|
jz 2f # if so
|
||
|
|
call _yield # sleep
|
||
|
|
jmp 1b # and loop
|
||
|
|
2: popl %edx # saved errno
|
||
|
|
testl %edx,%edx # Is it < 0
|
||
|
|
jl 3f # yup. ignore it
|
||
|
|
movl $tls::errno_addr(%ebx),%eax
|
||
|
|
movl %edx,(%eax)
|
||
|
|
3: movl \$-4,%eax # now decrement aux stack
|
||
|
|
xadd %eax,$tls::stackptr(%ebx) # and get pointer
|
||
|
|
xorl %ebp,%ebp
|
||
|
|
xchgl %ebp,-4(%eax) # get return address from signal stack
|
||
|
|
xchgl %ebp,0xa0(%esp) # store real return address
|
||
|
|
leave: xorl %eax,%eax
|
||
|
|
movl %eax,$tls::incyg(%ebx)
|
||
|
|
movl %eax,$tls::stacklock(%ebx) # unlock
|
||
|
|
|
||
|
|
movdqu (%esp),%xmm0
|
||
|
|
movdqu 0x10(%esp),%xmm1
|
||
|
|
movdqu 0x20(%esp),%xmm2
|
||
|
|
movdqu 0x30(%esp),%xmm3
|
||
|
|
movdqu 0x40(%esp),%xmm4
|
||
|
|
movdqu 0x50(%esp),%xmm5
|
||
|
|
movdqu 0x60(%esp),%xmm6
|
||
|
|
movdqu 0x70(%esp),%xmm7
|
||
|
|
fninit
|
||
|
|
fldcw 0x80(%esp)
|
||
|
|
addl \$0x84,%esp
|
||
|
|
popl %eax
|
||
|
|
popl %ebx
|
||
|
|
popl %ecx
|
||
|
|
popl %edx
|
||
|
|
popl %edi
|
||
|
|
popl %esi
|
||
|
|
popf
|
||
|
|
ret
|
||
|
|
|
||
|
|
.global __ZN7_cygtls3popEv\@4
|
||
|
|
__ZN7_cygtls3popEv\@4:
|
||
|
|
1: pushl %ebx
|
||
|
|
movl %eax,%ebx # this
|
||
|
|
movl \$-4,%eax
|
||
|
|
xadd %eax,$tls::pstackptr(%ebx)
|
||
|
|
movl -4(%eax),%eax
|
||
|
|
popl %ebx
|
||
|
|
ret
|
||
|
|
|
||
|
|
# _cygtls::lock
|
||
|
|
.global __ZN7_cygtls4lockEv\@4
|
||
|
|
__ZN7_cygtls4lockEv\@4:
|
||
|
|
pushl %ebx
|
||
|
|
movl %eax,%ebx
|
||
|
|
1: movl \$1,%eax
|
||
|
|
xchgl %eax,$tls::pstacklock(%ebx)
|
||
|
|
testl %eax,%eax
|
||
|
|
jz 2f
|
||
|
|
call _yield
|
||
|
|
jmp 1b
|
||
|
|
2: popl %ebx
|
||
|
|
ret
|
||
|
|
|
||
|
|
# _cygtls::unlock
|
||
|
|
.global __ZN7_cygtls6unlockEv\@4
|
||
|
|
__ZN7_cygtls6unlockEv\@4:
|
||
|
|
decl $tls::pstacklock(%eax)
|
||
|
|
ret
|
||
|
|
|
||
|
|
.global __ZN7_cygtls6lockedEv
|
||
|
|
__ZN7_cygtls6lockedEv:
|
||
|
|
movl $tls::pstacklock(%eax),%eax
|
||
|
|
ret
|
||
|
|
|
||
|
|
.extern __ZN7_cygtls19call_signal_handlerEv\@4
|
||
|
|
stabilize_sig_stack:
|
||
|
|
movl %fs:4,%ebx
|
||
|
|
1: movl \$1,%eax
|
||
|
|
xchgl %eax,$tls::stacklock(%ebx)
|
||
|
|
movl %eax,$tls::spinning(%ebx) # flag if we are waiting for lock
|
||
|
|
testl %eax,%eax
|
||
|
|
jz 2f
|
||
|
|
call _yield
|
||
|
|
jmp 1b
|
||
|
|
2: incl $tls::incyg(%ebx)
|
||
|
|
cmpl \$0,$tls::sig(%ebx)
|
||
|
|
jz 3f
|
||
|
|
decl $tls::stacklock(%ebx) # unlock
|
||
|
|
movl \$$tls::start_offset,%eax # point to beginning
|
||
|
|
addl %ebx,%eax # of tls block
|
||
|
|
call __ZN7_cygtls19call_signal_handlerEv\@4
|
||
|
|
jmp 1b
|
||
|
|
3: decl $tls::incyg(%ebx)
|
||
|
|
ret
|
||
|
|
EOF
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
|
||
|
|
sub longjmp {
|
||
|
|
if ($is64bit) {
|
||
|
|
return <<EOF;
|
||
|
|
|
||
|
|
.globl sigsetjmp
|
||
|
|
.seh_proc sigsetjmp
|
||
|
|
sigsetjmp:
|
||
|
|
.seh_endprologue
|
||
|
|
movl %edx,0x100(%rcx) # store savemask
|
||
|
|
testl %edx,%edx # savemask != 0?
|
||
|
|
je setjmp # no, skip fetching sigmask
|
||
|
|
pushq %rcx
|
||
|
|
subq \$0x20,%rsp
|
||
|
|
leaq 0x108(%rcx),%r8 # &sigjmp_buf.sigmask
|
||
|
|
xorq %rdx,%rdx # NULL
|
||
|
|
xorl %ecx,%ecx # SIG_SETMASK
|
||
|
|
call pthread_sigmask
|
||
|
|
addq \$0x20,%rsp
|
||
|
|
popq %rcx
|
||
|
|
jmp setjmp
|
||
|
|
.seh_endproc
|
||
|
|
|
||
|
|
.globl setjmp
|
||
|
|
.seh_proc setjmp
|
||
|
|
setjmp:
|
||
|
|
.seh_endprologue
|
||
|
|
# We use the Windows jmp_buf layout with two small twists.
|
||
|
|
# - we store the tls stackptr in Frame, MSVCRT stores a second copy
|
||
|
|
# of %rbp in Frame (twice? why?)
|
||
|
|
# - we just store %rsp as is, MSVCRT stores %rsp of the caller in Rsp
|
||
|
|
movq %rbx,0x8(%rcx)
|
||
|
|
movq %rsp,0x10(%rcx)
|
||
|
|
movq %rbp,0x18(%rcx)
|
||
|
|
movq %rsi,0x20(%rcx)
|
||
|
|
movq %rdi,0x28(%rcx)
|
||
|
|
movq %r12,0x30(%rcx)
|
||
|
|
movq %r13,0x38(%rcx)
|
||
|
|
movq %r14,0x40(%rcx)
|
||
|
|
movq %r15,0x48(%rcx)
|
||
|
|
movq (%rsp),%r10
|
||
|
|
movq %r10,0x50(%rcx)
|
||
|
|
stmxcsr 0x58(%rcx)
|
||
|
|
fnstcw 0x5c(%rcx)
|
||
|
|
# jmp_buf is potentially unaligned!
|
||
|
|
movdqu %xmm6,0x60(%rcx)
|
||
|
|
movdqu %xmm7,0x70(%rcx)
|
||
|
|
movdqu %xmm8,0x80(%rcx)
|
||
|
|
movdqu %xmm9,0x90(%rcx)
|
||
|
|
movdqu %xmm10,0xa0(%rcx)
|
||
|
|
movdqu %xmm11,0xb0(%rcx)
|
||
|
|
movdqu %xmm12,0xc0(%rcx)
|
||
|
|
movdqu %xmm13,0xd0(%rcx)
|
||
|
|
movdqu %xmm14,0xe0(%rcx)
|
||
|
|
movdqu %xmm15,0xf0(%rcx)
|
||
|
|
pushq %rcx
|
||
|
|
.seh_pushreg %rcx
|
||
|
|
call stabilize_sig_stack # returns tls in r11
|
||
|
|
popq %rcx
|
||
|
|
movq $tls::stackptr(%r11),%r10
|
||
|
|
movq %r10,(%rcx)
|
||
|
|
decl $tls::stacklock(%r11)
|
||
|
|
xorl %eax,%eax
|
||
|
|
ret
|
||
|
|
.seh_endproc
|
||
|
|
|
||
|
|
.globl siglongjmp
|
||
|
|
.seh_proc siglongjmp
|
||
|
|
siglongjmp:
|
||
|
|
pushq %rcx
|
||
|
|
.seh_pushreg %rcx
|
||
|
|
.seh_endprologue
|
||
|
|
movl %edx, %r12d
|
||
|
|
movl 0x100(%rcx),%r8d # savemask
|
||
|
|
testl %r8d,%r8d # savemask != 0?
|
||
|
|
je 1f # no, jmp to longjmp
|
||
|
|
xorq %r8,%r8 # NULL
|
||
|
|
leaq 0x108(%rcx),%rdx # &sigjmp_buf.sigmask
|
||
|
|
xorl %ecx,%ecx # SIG_SETMASK
|
||
|
|
subq \$0x20,%rsp
|
||
|
|
call pthread_sigmask
|
||
|
|
addq \$0x20,%rsp
|
||
|
|
jmp 1f
|
||
|
|
.seh_endproc
|
||
|
|
|
||
|
|
.globl longjmp
|
||
|
|
.seh_proc longjmp
|
||
|
|
longjmp:
|
||
|
|
pushq %rcx
|
||
|
|
.seh_pushreg %rcx
|
||
|
|
.seh_endprologue
|
||
|
|
movl %edx,%r12d # save return value
|
||
|
|
1:
|
||
|
|
call stabilize_sig_stack # returns tls in r11
|
||
|
|
popq %rcx
|
||
|
|
movl %r12d,%eax # restore return value
|
||
|
|
movq (%rcx),%r10 # get old signal stack
|
||
|
|
movq %r10,$tls::stackptr(%r11) # restore
|
||
|
|
decl $tls::stacklock(%r11) # relinquish lock
|
||
|
|
xorl %r10d,%r10d
|
||
|
|
movl %r10d,$tls::incyg(%r11) # we're not in cygwin anymore
|
||
|
|
movq 0x8(%rcx),%rbx
|
||
|
|
movq 0x10(%rcx),%rsp
|
||
|
|
movq 0x18(%rcx),%rbp
|
||
|
|
movq 0x20(%rcx),%rsi
|
||
|
|
movq 0x28(%rcx),%rdi
|
||
|
|
movq 0x30(%rcx),%r12
|
||
|
|
movq 0x38(%rcx),%r13
|
||
|
|
movq 0x40(%rcx),%r14
|
||
|
|
movq 0x48(%rcx),%r15
|
||
|
|
movq 0x50(%rcx),%r10
|
||
|
|
movq %r10,(%rsp)
|
||
|
|
ldmxcsr 0x58(%rcx)
|
||
|
|
fnclex
|
||
|
|
fldcw 0x5c(%rcx)
|
||
|
|
# jmp_buf is potentially unaligned!
|
||
|
|
movdqu 0x60(%rcx),%xmm6
|
||
|
|
movdqu 0x70(%rcx),%xmm7
|
||
|
|
movdqu 0x80(%rcx),%xmm8
|
||
|
|
movdqu 0x90(%rcx),%xmm9
|
||
|
|
movdqu 0xa0(%rcx),%xmm10
|
||
|
|
movdqu 0xb0(%rcx),%xmm11
|
||
|
|
movdqu 0xc0(%rcx),%xmm12
|
||
|
|
movdqu 0xd0(%rcx),%xmm13
|
||
|
|
movdqu 0xe0(%rcx),%xmm14
|
||
|
|
movdqu 0xf0(%rcx),%xmm15
|
||
|
|
testl %eax,%eax
|
||
|
|
jne 0f
|
||
|
|
incl %eax
|
||
|
|
0: ret
|
||
|
|
.seh_endproc
|
||
|
|
EOF
|
||
|
|
} else {
|
||
|
|
return <<EOF;
|
||
|
|
|
||
|
|
.globl _sigsetjmp
|
||
|
|
_sigsetjmp:
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
pushl %edi
|
||
|
|
movl 8(%ebp),%edi # &sigjmp_buf
|
||
|
|
movl 12(%ebp),%eax # savemask
|
||
|
|
movl %eax,208(%edi) # store savemask
|
||
|
|
testl %eax,%eax # savemask != 0?
|
||
|
|
je 1f # no, skip fetching sigmask
|
||
|
|
subl \$12,%esp
|
||
|
|
leal 212(%edi),%eax # &sigjmp_buf.sigmask
|
||
|
|
movl %eax,8(%esp) # -> 3rd param "oldset"
|
||
|
|
xorl %eax,%eax
|
||
|
|
movl %eax,4(%esp) # NULL -> 2nd param "set"
|
||
|
|
movl %eax,(%esp) # SIG_SETMASK -> 1st param "how"
|
||
|
|
call _pthread_sigmask
|
||
|
|
addl \$12,%esp
|
||
|
|
jmp 1f
|
||
|
|
|
||
|
|
.globl _setjmp
|
||
|
|
_setjmp:
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
pushl %edi
|
||
|
|
movl 8(%ebp),%edi
|
||
|
|
1:
|
||
|
|
movl %eax,0(%edi)
|
||
|
|
movl %ebx,4(%edi)
|
||
|
|
movl %ecx,8(%edi)
|
||
|
|
movl %edx,12(%edi)
|
||
|
|
movl %esi,16(%edi)
|
||
|
|
movl -4(%ebp),%eax
|
||
|
|
movl %eax,20(%edi)
|
||
|
|
movl 0(%ebp),%eax
|
||
|
|
movl %eax,24(%edi)
|
||
|
|
movl %esp,%eax
|
||
|
|
addl \$12,%eax
|
||
|
|
movl %eax,28(%edi)
|
||
|
|
movl 4(%ebp),%eax
|
||
|
|
movl %eax,32(%edi)
|
||
|
|
movw %es,%ax
|
||
|
|
movw %ax,36(%edi)
|
||
|
|
movw %fs,%ax
|
||
|
|
movw %ax,38(%edi)
|
||
|
|
movw %gs,%ax
|
||
|
|
movw %ax,40(%edi)
|
||
|
|
movw %ss,%ax
|
||
|
|
movw %ax,42(%edi)
|
||
|
|
movl %fs:0,%eax
|
||
|
|
movl %eax,44(%edi)
|
||
|
|
fnstcw 48(%edi)
|
||
|
|
pushl %ebx
|
||
|
|
call stabilize_sig_stack
|
||
|
|
movl $tls::stackptr(%ebx),%eax # save stack pointer contents
|
||
|
|
decl $tls::stacklock(%ebx)
|
||
|
|
popl %ebx
|
||
|
|
movl %eax,52(%edi)
|
||
|
|
popl %edi
|
||
|
|
movl \$0,%eax
|
||
|
|
leave
|
||
|
|
ret
|
||
|
|
|
||
|
|
.globl ___sjfault
|
||
|
|
___sjfault:
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
pushl %edi
|
||
|
|
movl 8(%ebp),%edi
|
||
|
|
movl %eax,0(%edi)
|
||
|
|
movl %ebx,4(%edi)
|
||
|
|
movl %ecx,8(%edi)
|
||
|
|
movl %edx,12(%edi)
|
||
|
|
movl %esi,16(%edi)
|
||
|
|
movl -4(%ebp),%eax
|
||
|
|
movl %eax,20(%edi)
|
||
|
|
movl 0(%ebp),%eax
|
||
|
|
movl %eax,24(%edi)
|
||
|
|
movl %esp,%eax
|
||
|
|
addl \$12,%eax
|
||
|
|
movl %eax,28(%edi)
|
||
|
|
movl 4(%ebp),%eax
|
||
|
|
movl %eax,32(%edi)
|
||
|
|
movw %es,%ax
|
||
|
|
movw %ax,36(%edi)
|
||
|
|
movw %fs,%ax
|
||
|
|
movw %ax,38(%edi)
|
||
|
|
movw %gs,%ax
|
||
|
|
movw %ax,40(%edi)
|
||
|
|
movw %ss,%ax
|
||
|
|
movw %ax,42(%edi)
|
||
|
|
movl %fs:0,%eax
|
||
|
|
movl %eax,44(%edi)
|
||
|
|
popl %edi
|
||
|
|
movl \$0,%eax
|
||
|
|
leave
|
||
|
|
ret
|
||
|
|
|
||
|
|
.global ___ljfault
|
||
|
|
___ljfault:
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
movl 8(%ebp),%edi
|
||
|
|
|
||
|
|
movl 12(%ebp),%eax
|
||
|
|
testl %eax,%eax
|
||
|
|
jne 0f
|
||
|
|
incl %eax
|
||
|
|
|
||
|
|
0: movl %eax,0(%edi)
|
||
|
|
movl 24(%edi),%ebp
|
||
|
|
pushfl
|
||
|
|
popl %ebx
|
||
|
|
movl 44(%edi),%eax
|
||
|
|
movl %eax,%fs:0
|
||
|
|
movw 42(%edi),%ax
|
||
|
|
movw %ax,%ss
|
||
|
|
movl 28(%edi),%esp
|
||
|
|
pushl 32(%edi)
|
||
|
|
pushl %ebx
|
||
|
|
movw 36(%edi),%ax
|
||
|
|
movw %ax,%es
|
||
|
|
movw 40(%edi),%ax
|
||
|
|
movw %ax,%gs
|
||
|
|
movl 0(%edi),%eax
|
||
|
|
movl 4(%edi),%ebx
|
||
|
|
movl 8(%edi),%ecx
|
||
|
|
movl 16(%edi),%esi
|
||
|
|
movl 12(%edi),%edx
|
||
|
|
movl 20(%edi),%edi
|
||
|
|
popfl
|
||
|
|
ret
|
||
|
|
|
||
|
|
.globl _siglongjmp
|
||
|
|
_siglongjmp:
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
movl 8(%ebp),%edi # &sigjmp_buf
|
||
|
|
movl 208(%edi),%eax # load savemask
|
||
|
|
testl %eax,%eax # savemask != 0?
|
||
|
|
je 1f # no, skip restoring sigmask
|
||
|
|
subl \$12,%esp
|
||
|
|
leal 212(%edi),%eax # &sigjmp_buf.sigmask
|
||
|
|
movl %eax,4(%esp) # -> 2nd param "set"
|
||
|
|
xorl %eax,%eax
|
||
|
|
movl %eax,8(%esp) # NULL -> 3rd param "oldset"
|
||
|
|
movl %eax,(%esp) # SIG_SETMASK -> 1st param "how"
|
||
|
|
call _pthread_sigmask
|
||
|
|
addl \$12,%esp
|
||
|
|
jmp 1f
|
||
|
|
|
||
|
|
.globl _longjmp
|
||
|
|
_longjmp:
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
movl 8(%ebp),%edi # &jmp_buf
|
||
|
|
1:
|
||
|
|
call stabilize_sig_stack
|
||
|
|
movl 52(%edi),%eax # get old signal stack
|
||
|
|
movl %eax,$tls::stackptr(%ebx) # restore
|
||
|
|
decl $tls::stacklock(%ebx) # relinquish lock
|
||
|
|
xorl %eax,%eax
|
||
|
|
movl %eax,$tls::incyg(%ebx) # we're not in cygwin anymore
|
||
|
|
|
||
|
|
movl 12(%ebp),%eax
|
||
|
|
testl %eax,%eax
|
||
|
|
jne 3f
|
||
|
|
incl %eax
|
||
|
|
|
||
|
|
3: movl %eax,0(%edi)
|
||
|
|
movl 24(%edi),%ebp
|
||
|
|
pushfl
|
||
|
|
popl %ebx
|
||
|
|
fninit
|
||
|
|
fldcw 48(%edi)
|
||
|
|
movl 44(%edi),%eax
|
||
|
|
movl %eax,%fs:0
|
||
|
|
movw 42(%edi),%ax
|
||
|
|
movw %ax,%ss
|
||
|
|
movl 28(%edi),%esp
|
||
|
|
pushl 32(%edi)
|
||
|
|
pushl %ebx
|
||
|
|
movw 36(%edi),%ax
|
||
|
|
movw %ax,%es
|
||
|
|
movw 40(%edi),%ax
|
||
|
|
movw %ax,%gs
|
||
|
|
movl 0(%edi),%eax
|
||
|
|
movl 4(%edi),%ebx
|
||
|
|
movl 8(%edi),%ecx
|
||
|
|
movl 16(%edi),%esi
|
||
|
|
movl 12(%edi),%edx
|
||
|
|
movl 20(%edi),%edi
|
||
|
|
popfl
|
||
|
|
ret
|
||
|
|
EOF
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
sub cleanup(@) {
|
||
|
|
grep {s/\r//og; s/#.*//og; s/\s+\n//sog; !/^$/o && $_} @_;
|
||
|
|
}
|