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#!/usr/bin/perl -w # -*- tab-width: 4; indent-tabs-mode: nil; cperl-indent-level: 4 -*-
#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
my $nFunIndexes = 8;
my $nVtableOffsets = 4;
sub gen_arm ($$)
{
my ($funIndex, $vtableOffset) = @_;
if ($funIndex & 0x80000000) {
printf ("#ifndef __arm64\n");
}
printf ("codeSnippet_%08x_%d:\n", $funIndex, $vtableOffset);
printf ("#ifdef __arm\n");
# Note: pc is the address of instruction being executed plus 8
printf (" mov ip, pc\n");
printf ("#else\n");
printf (" adr x15, .+8\n");
printf ("#endif\n");
printf (" b _privateSnippetExecutor\n");
printf (" .long %#08x\n", $funIndex);
printf (" .long %d\n", $vtableOffset);
if ($funIndex & 0x80000000) {
printf ("#endif\n");
}
}
sub gen_x86 ($$$)
{
my ($funIndex, $vtableOffset, $executor) = @_;
printf ("codeSnippet_%08x_%d_%s:\n", $funIndex, $vtableOffset, $executor);
printf (" movl \$%#08x, %%eax\n", $funIndex);
printf (" movl \$%d, %%edx\n", $vtableOffset);
printf (" jmp _privateSnippetExecutor%s\n", $executor);
}
printf (".text\n");
printf ("#if defined(__arm) || defined(__arm64)\n");
printf ("\n");
printf ("// Each codeSnippetX function stores into ip (arm64: x15) an address and branches to _privateSnippetExecutor\n");
printf ("// The address is that following the branch instruction, containing two 32-bit ints:\n");
printf ("// - the function index, which for 32-bit can have the 0x80000000 bit set\n");
printf ("// to indicate that a hidden parameter is used for returning large values\n");
printf ("// - the vtable offset\n");
printf ("\n");
printf (" .align 4\n");
printf ("\n");
foreach my $funIndex (0 .. $nFunIndexes-1)
{
foreach my $vtableOffset (0 .. $nVtableOffsets-1)
{
gen_arm ($funIndex, $vtableOffset);
gen_arm ($funIndex|0x80000000, $vtableOffset);
}
}
printf ("#else\n");
printf (" .align 1, 0x90\n");
foreach my $funIndex (0 .. $nFunIndexes-1)
{
foreach my $vtableOffset (0 .. $nVtableOffsets-1)
{
foreach my $executor ('General', 'Void', 'Hyper', 'Float', 'Double', 'Class')
{
gen_x86 ($funIndex, $vtableOffset, $executor);
gen_x86 ($funIndex|0x80000000, $vtableOffset, $executor);
}
}
}
printf ("#endif\n");
printf (" .globl _nFunIndexes\n");
printf ("_nFunIndexes:\n");
printf (" .long %d\n", $nFunIndexes);
printf (" .globl _nVtableOffsets\n");
printf ("_nVtableOffsets:\n");
printf (" .long %d\n", $nVtableOffsets);
printf (" .globl _codeSnippets\n");
printf ("_codeSnippets:\n");
foreach my $funIndex (0 .. $nFunIndexes-1)
{
foreach my $vtableOffset (0 .. $nVtableOffsets-1)
{
printf ("#if defined(__arm) || defined(__arm64)\n");
printf (" .long codeSnippet_%08x_%d - _codeSnippets\n", $funIndex, $vtableOffset);
printf ("#ifndef __arm64\n");
printf (" .long codeSnippet_%08x_%d - _codeSnippets\n", $funIndex|0x80000000, $vtableOffset);
printf ("#endif\n");
printf ("#else\n");
foreach my $executor ('General', 'Void', 'Hyper', 'Float', 'Double', 'Class')
{
printf (" .long codeSnippet_%08x_%d_%s - _codeSnippets\n", $funIndex, $vtableOffset, $executor);
printf (" .long codeSnippet_%08x_%d_%s - _codeSnippets\n", $funIndex|0x80000000, $vtableOffset, $executor);
}
printf ("#endif\n");
}
}
# vim:set shiftwidth=4 softtabstop=4 expandtab:
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