mirror of
https://github.com/restic/restic.git
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Update crypto library
This allows building restic with Go 1.3 on ARM. Closes #501
This commit is contained in:
Alexander Neumann
parent
039019689a
commit
306c0fea16
3 changed files with 85 additions and 27 deletions
4
vendor/manifest
vendored
4
vendor/manifest
vendored
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@ -53,8 +53,8 @@
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{
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"importpath": "golang.org/x/crypto/poly1305",
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"repository": "https://go.googlesource.com/crypto",
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"revision": "cc04154d65fb9296747569b107cfd05380b1ea3e",
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"branch": "HEAD",
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"revision": "1777f3ba8c1fed80fcaec3317e3aaa4f627764d2",
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"branch": "master",
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"path": "/poly1305"
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},
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{
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@ -7,19 +7,17 @@
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// +build arm,!gccgo,!appengine
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#include "textflag.h"
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DATA poly1305_init_constants_armv6<>+0x00(SB)/4, $0x3ffffff
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DATA poly1305_init_constants_armv6<>+0x04(SB)/4, $0x3ffff03
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DATA poly1305_init_constants_armv6<>+0x08(SB)/4, $0x3ffc0ff
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DATA poly1305_init_constants_armv6<>+0x0c(SB)/4, $0x3f03fff
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DATA poly1305_init_constants_armv6<>+0x10(SB)/4, $0x00fffff
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GLOBL poly1305_init_constants_armv6<>(SB), RODATA, $20
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GLOBL poly1305_init_constants_armv6<>(SB), 8, $20
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// Warning: the linker may use R11 to synthesize certain instructions. Please
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// take care and verify that no synthetic instructions use it.
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TEXT poly1305_init_ext_armv6<>(SB),NOSPLIT,$-4
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TEXT poly1305_init_ext_armv6<>(SB),4,$-4
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MOVM.DB.W [R4-R11], (R13)
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MOVM.IA.W (R1), [R2-R5]
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MOVW $poly1305_init_constants_armv6<>(SB), R7
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@ -49,7 +47,17 @@ TEXT poly1305_init_ext_armv6<>(SB),NOSPLIT,$-4
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MOVM.IA.W (R13), [R4-R11]
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RET
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TEXT poly1305_blocks_armv6<>(SB),NOSPLIT,$-4
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#define MOVW_UNALIGNED(Rsrc, Rdst, Rtmp, offset) \
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MOVBU (offset+0)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+0)(Rdst); \
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MOVBU (offset+1)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+1)(Rdst); \
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MOVBU (offset+2)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+2)(Rdst); \
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MOVBU (offset+3)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+3)(Rdst)
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TEXT poly1305_blocks_armv6<>(SB),4,$-4
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MOVM.DB.W [R4, R5, R6, R7, R8, R9, g, R11, R14], (R13)
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SUB $128, R13
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MOVW R0, 36(R13)
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@ -68,7 +76,19 @@ TEXT poly1305_blocks_armv6<>(SB),NOSPLIT,$-4
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CMP $16, R12
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BLO poly1305_blocks_armv6_done
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poly1305_blocks_armv6_mainloop:
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WORD $0xe31e0003 // TST R14, #3 not working see issue 5921
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BEQ poly1305_blocks_armv6_mainloop_aligned
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ADD $48, R13, g
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MOVW_UNALIGNED(R14, g, R0, 0)
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MOVW_UNALIGNED(R14, g, R0, 4)
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MOVW_UNALIGNED(R14, g, R0, 8)
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MOVW_UNALIGNED(R14, g, R0, 12)
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MOVM.IA (g), [R0-R3]
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ADD $16, R14
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B poly1305_blocks_armv6_mainloop_loaded
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poly1305_blocks_armv6_mainloop_aligned:
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MOVM.IA.W (R14), [R0-R3]
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poly1305_blocks_armv6_mainloop_loaded:
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MOVW R0>>26, g
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MOVW R1>>20, R11
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MOVW R2>>14, R12
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@ -176,7 +196,17 @@ poly1305_blocks_armv6_done:
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MOVM.IA.W (R13), [R4, R5, R6, R7, R8, R9, g, R11, R14]
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RET
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TEXT poly1305_finish_ext_armv6<>(SB),NOSPLIT,$-4
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#define MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp) \
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MOVBU.P 1(Rsrc), Rtmp; \
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MOVBU.P Rtmp, 1(Rdst); \
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MOVBU.P 1(Rsrc), Rtmp; \
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MOVBU.P Rtmp, 1(Rdst)
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#define MOVWP_UNALIGNED(Rsrc, Rdst, Rtmp) \
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MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp); \
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MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp)
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TEXT poly1305_finish_ext_armv6<>(SB),4,$-4
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MOVM.DB.W [R4, R5, R6, R7, R8, R9, g, R11, R14], (R13)
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SUB $16, R13, R13
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MOVW R0, R5
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@ -191,16 +221,32 @@ TEXT poly1305_finish_ext_armv6<>(SB),NOSPLIT,$-4
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MOVW R0, 4(R13)
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MOVW R0, 8(R13)
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MOVW R0, 12(R13)
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WORD $0xe3110003 // TST R1, #3 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_aligned
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WORD $0xe3120008 // TST R2, #8 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip8
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MOVM.IA.W (R1), [g-R11]
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MOVM.IA.W [g-R11], (R9)
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MOVWP_UNALIGNED(R1, R9, g)
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MOVWP_UNALIGNED(R1, R9, g)
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poly1305_finish_ext_armv6_skip8:
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WORD $0xe3120004 // TST $4, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip4
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MOVWP_UNALIGNED(R1, R9, g)
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poly1305_finish_ext_armv6_skip4:
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WORD $0xe3120002 // TST $2, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip2
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MOVHUP_UNALIGNED(R1, R9, g)
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B poly1305_finish_ext_armv6_skip2
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poly1305_finish_ext_armv6_aligned:
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WORD $0xe3120008 // TST R2, #8 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip8_aligned
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MOVM.IA.W (R1), [g-R11]
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MOVM.IA.W [g-R11], (R9)
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poly1305_finish_ext_armv6_skip8_aligned:
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WORD $0xe3120004 // TST $4, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip4_aligned
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MOVW.P 4(R1), g
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MOVW.P g, 4(R9)
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poly1305_finish_ext_armv6_skip4:
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poly1305_finish_ext_armv6_skip4_aligned:
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WORD $0xe3120002 // TST $2, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip2
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MOVHU.P 2(R1), g
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@ -7,6 +7,7 @@ package poly1305
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import (
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"bytes"
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"testing"
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"unsafe"
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)
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var testData = []struct {
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@ -34,41 +35,52 @@ var testData = []struct {
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},
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}
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func TestSum(t *testing.T) {
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func testSum(t *testing.T, unaligned bool) {
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var out [16]byte
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var key [32]byte
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for i, v := range testData {
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in := v.in
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if unaligned {
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in = unalignBytes(in)
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}
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copy(key[:], v.k)
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Sum(&out, v.in, &key)
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Sum(&out, in, &key)
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if !bytes.Equal(out[:], v.correct) {
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t.Errorf("%d: expected %x, got %x", i, v.correct, out[:])
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}
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}
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}
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func Benchmark1K(b *testing.B) {
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b.StopTimer()
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func TestSum(t *testing.T) { testSum(t, false) }
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func TestSumUnaligned(t *testing.T) { testSum(t, true) }
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func benchmark(b *testing.B, size int, unaligned bool) {
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var out [16]byte
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var key [32]byte
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in := make([]byte, 1024)
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in := make([]byte, size)
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if unaligned {
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in = unalignBytes(in)
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}
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b.SetBytes(int64(len(in)))
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b.StartTimer()
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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Sum(&out, in, &key)
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}
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}
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func Benchmark64(b *testing.B) {
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b.StopTimer()
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var out [16]byte
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var key [32]byte
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in := make([]byte, 64)
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b.SetBytes(int64(len(in)))
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b.StartTimer()
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func Benchmark64(b *testing.B) { benchmark(b, 64, false) }
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func Benchmark1K(b *testing.B) { benchmark(b, 1024, false) }
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func Benchmark64Unaligned(b *testing.B) { benchmark(b, 64, true) }
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func Benchmark1KUnaligned(b *testing.B) { benchmark(b, 1024, true) }
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for i := 0; i < b.N; i++ {
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Sum(&out, in, &key)
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func unalignBytes(in []byte) []byte {
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out := make([]byte, len(in)+1)
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if uintptr(unsafe.Pointer(&out[0]))&(unsafe.Alignof(uint32(0))-1) == 0 {
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out = out[1:]
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} else {
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out = out[:len(in)]
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}
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copy(out, in)
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return out
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}
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