ff2394527f
On POWER, r0 is wired to zero in some argument positions of some instructions. The base register for a load is one of them. Thus, if rewriting a load to r0, we cannot use r0 to store the base address. This could be more efficient, but loading to r0 appears to be very rare so I'm not going to worry about it for now. Change-Id: I14dac96ba4c0380b166a7667b0cba918f1ae25ec Reviewed-on: https://boringssl-review.googlesource.com/17065 Commit-Queue: Adam Langley <agl@google.com> Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: David Benjamin <davidben@google.com> CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
87 lines
2.6 KiB
Go
87 lines
2.6 KiB
Go
// Copyright (c) 2017, Google Inc.
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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package main
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import (
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"bytes"
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"flag"
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"io/ioutil"
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"path/filepath"
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"testing"
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)
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var (
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testDataDir = flag.String("testdata", "testdata", "The path to the test data directory.")
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update = flag.Bool("update", false, "If true, update output files rather than compare them.")
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)
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type delocateTest struct {
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name string
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in []string
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out string
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}
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func (test *delocateTest) Path(file string) string {
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return filepath.Join(*testDataDir, test.name, file)
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}
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var delocateTests = []delocateTest{
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{"ppc64le-GlobalEntry", []string{"in.s"}, "out.s"},
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{"ppc64le-LoadToR0", []string{"in.s"}, "out.s"},
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{"ppc64le-Sample2", []string{"in.s"}, "out.s"},
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{"ppc64le-Sample", []string{"in.s"}, "out.s"},
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{"ppc64le-TOCWithOffset", []string{"in.s"}, "out.s"},
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{"x86_64-Basic", []string{"in.s"}, "out.s"},
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{"x86_64-BSS", []string{"in.s"}, "out.s"},
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{"x86_64-GOTRewrite", []string{"in.s"}, "out.s"},
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{"x86_64-LabelRewrite", []string{"in1.s", "in2.s"}, "out.s"},
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{"x86_64-Sections", []string{"in.s"}, "out.s"},
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}
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func TestDelocate(t *testing.T) {
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for _, test := range delocateTests {
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t.Run(test.name, func(t *testing.T) {
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var inputs []inputFile
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for i, in := range test.in {
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inputs = append(inputs, inputFile{
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index: i,
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path: test.Path(in),
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})
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}
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if err := parseInputs(inputs); err != nil {
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t.Fatalf("parseInputs failed: %s", err)
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}
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var buf bytes.Buffer
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if err := transform(&buf, inputs); err != nil {
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t.Fatalf("transform failed: %s", err)
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}
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if *update {
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ioutil.WriteFile(test.Path(test.out), buf.Bytes(), 0666)
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} else {
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expected, err := ioutil.ReadFile(test.Path(test.out))
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if err != nil {
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t.Fatalf("could not read %q: %s", test.Path(test.out), err)
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}
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if !bytes.Equal(buf.Bytes(), expected) {
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t.Errorf("delocated output differed. Wanted:\n%s\nGot:\n%s\n", expected, buf.Bytes())
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}
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}
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})
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}
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}
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