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- // Copyright 2015 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- // This code was translated into a form compatible with 5a from the public
- // domain source by Andrew Moon: github.com/floodyberry/poly1305-opt/blob/master/app/extensions/poly1305.
- // +build arm,!gccgo,!appengine
- DATA poly1305_init_constants_armv6<>+0x00(SB)/4, $0x3ffffff
- DATA poly1305_init_constants_armv6<>+0x04(SB)/4, $0x3ffff03
- DATA poly1305_init_constants_armv6<>+0x08(SB)/4, $0x3ffc0ff
- DATA poly1305_init_constants_armv6<>+0x0c(SB)/4, $0x3f03fff
- DATA poly1305_init_constants_armv6<>+0x10(SB)/4, $0x00fffff
- GLOBL poly1305_init_constants_armv6<>(SB), 8, $20
- // Warning: the linker may use R11 to synthesize certain instructions. Please
- // take care and verify that no synthetic instructions use it.
- TEXT poly1305_init_ext_armv6<>(SB),4,$-4
- MOVM.DB.W [R4-R11], (R13)
- MOVM.IA.W (R1), [R2-R5]
- MOVW $poly1305_init_constants_armv6<>(SB), R7
- MOVW R2, R8
- MOVW R2>>26, R9
- MOVW R3>>20, g
- MOVW R4>>14, R11
- MOVW R5>>8, R12
- ORR R3<<6, R9, R9
- ORR R4<<12, g, g
- ORR R5<<18, R11, R11
- MOVM.IA (R7), [R2-R6]
- AND R8, R2, R2
- AND R9, R3, R3
- AND g, R4, R4
- AND R11, R5, R5
- AND R12, R6, R6
- MOVM.IA.W [R2-R6], (R0)
- EOR R2, R2, R2
- EOR R3, R3, R3
- EOR R4, R4, R4
- EOR R5, R5, R5
- EOR R6, R6, R6
- MOVM.IA.W [R2-R6], (R0)
- MOVM.IA.W (R1), [R2-R5]
- MOVM.IA [R2-R6], (R0)
- MOVM.IA.W (R13), [R4-R11]
- RET
- #define MOVW_UNALIGNED(Rsrc, Rdst, Rtmp, offset) \
- MOVBU (offset+0)(Rsrc), Rtmp; \
- MOVBU Rtmp, (offset+0)(Rdst); \
- MOVBU (offset+1)(Rsrc), Rtmp; \
- MOVBU Rtmp, (offset+1)(Rdst); \
- MOVBU (offset+2)(Rsrc), Rtmp; \
- MOVBU Rtmp, (offset+2)(Rdst); \
- MOVBU (offset+3)(Rsrc), Rtmp; \
- MOVBU Rtmp, (offset+3)(Rdst)
- TEXT poly1305_blocks_armv6<>(SB),4,$-4
- MOVM.DB.W [R4, R5, R6, R7, R8, R9, g, R11, R14], (R13)
- SUB $128, R13
- MOVW R0, 36(R13)
- MOVW R1, 40(R13)
- MOVW R2, 44(R13)
- MOVW R1, R14
- MOVW R2, R12
- MOVW 56(R0), R8
- WORD $0xe1180008 // TST R8, R8 not working see issue 5921
- EOR R6, R6, R6
- MOVW.EQ $(1<<24), R6
- MOVW R6, 32(R13)
- ADD $64, R13, g
- MOVM.IA (R0), [R0-R9]
- MOVM.IA [R0-R4], (g)
- CMP $16, R12
- BLO poly1305_blocks_armv6_done
- poly1305_blocks_armv6_mainloop:
- WORD $0xe31e0003 // TST R14, #3 not working see issue 5921
- BEQ poly1305_blocks_armv6_mainloop_aligned
- ADD $48, R13, g
- MOVW_UNALIGNED(R14, g, R0, 0)
- MOVW_UNALIGNED(R14, g, R0, 4)
- MOVW_UNALIGNED(R14, g, R0, 8)
- MOVW_UNALIGNED(R14, g, R0, 12)
- MOVM.IA (g), [R0-R3]
- ADD $16, R14
- B poly1305_blocks_armv6_mainloop_loaded
- poly1305_blocks_armv6_mainloop_aligned:
- MOVM.IA.W (R14), [R0-R3]
- poly1305_blocks_armv6_mainloop_loaded:
- MOVW R0>>26, g
- MOVW R1>>20, R11
- MOVW R2>>14, R12
- MOVW R14, 40(R13)
- MOVW R3>>8, R4
- ORR R1<<6, g, g
- ORR R2<<12, R11, R11
- ORR R3<<18, R12, R12
- BIC $0xfc000000, R0, R0
- BIC $0xfc000000, g, g
- MOVW 32(R13), R3
- BIC $0xfc000000, R11, R11
- BIC $0xfc000000, R12, R12
- ADD R0, R5, R5
- ADD g, R6, R6
- ORR R3, R4, R4
- ADD R11, R7, R7
- ADD $64, R13, R14
- ADD R12, R8, R8
- ADD R4, R9, R9
- MOVM.IA (R14), [R0-R4]
- MULLU R4, R5, (R11, g)
- MULLU R3, R5, (R14, R12)
- MULALU R3, R6, (R11, g)
- MULALU R2, R6, (R14, R12)
- MULALU R2, R7, (R11, g)
- MULALU R1, R7, (R14, R12)
- ADD R4<<2, R4, R4
- ADD R3<<2, R3, R3
- MULALU R1, R8, (R11, g)
- MULALU R0, R8, (R14, R12)
- MULALU R0, R9, (R11, g)
- MULALU R4, R9, (R14, R12)
- MOVW g, 24(R13)
- MOVW R11, 28(R13)
- MOVW R12, 16(R13)
- MOVW R14, 20(R13)
- MULLU R2, R5, (R11, g)
- MULLU R1, R5, (R14, R12)
- MULALU R1, R6, (R11, g)
- MULALU R0, R6, (R14, R12)
- MULALU R0, R7, (R11, g)
- MULALU R4, R7, (R14, R12)
- ADD R2<<2, R2, R2
- ADD R1<<2, R1, R1
- MULALU R4, R8, (R11, g)
- MULALU R3, R8, (R14, R12)
- MULALU R3, R9, (R11, g)
- MULALU R2, R9, (R14, R12)
- MOVW g, 8(R13)
- MOVW R11, 12(R13)
- MOVW R12, 0(R13)
- MOVW R14, w+4(SP)
- MULLU R0, R5, (R11, g)
- MULALU R4, R6, (R11, g)
- MULALU R3, R7, (R11, g)
- MULALU R2, R8, (R11, g)
- MULALU R1, R9, (R11, g)
- MOVM.IA (R13), [R0-R7]
- MOVW g>>26, R12
- MOVW R4>>26, R14
- ORR R11<<6, R12, R12
- ORR R5<<6, R14, R14
- BIC $0xfc000000, g, g
- BIC $0xfc000000, R4, R4
- ADD.S R12, R0, R0
- ADC $0, R1, R1
- ADD.S R14, R6, R6
- ADC $0, R7, R7
- MOVW R0>>26, R12
- MOVW R6>>26, R14
- ORR R1<<6, R12, R12
- ORR R7<<6, R14, R14
- BIC $0xfc000000, R0, R0
- BIC $0xfc000000, R6, R6
- ADD R14<<2, R14, R14
- ADD.S R12, R2, R2
- ADC $0, R3, R3
- ADD R14, g, g
- MOVW R2>>26, R12
- MOVW g>>26, R14
- ORR R3<<6, R12, R12
- BIC $0xfc000000, g, R5
- BIC $0xfc000000, R2, R7
- ADD R12, R4, R4
- ADD R14, R0, R0
- MOVW R4>>26, R12
- BIC $0xfc000000, R4, R8
- ADD R12, R6, R9
- MOVW w+44(SP), R12
- MOVW w+40(SP), R14
- MOVW R0, R6
- CMP $32, R12
- SUB $16, R12, R12
- MOVW R12, 44(R13)
- BHS poly1305_blocks_armv6_mainloop
- poly1305_blocks_armv6_done:
- MOVW 36(R13), R12
- MOVW R5, 20(R12)
- MOVW R6, 24(R12)
- MOVW R7, 28(R12)
- MOVW R8, 32(R12)
- MOVW R9, 36(R12)
- ADD $128, R13, R13
- MOVM.IA.W (R13), [R4, R5, R6, R7, R8, R9, g, R11, R14]
- RET
- #define MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp) \
- MOVBU.P 1(Rsrc), Rtmp; \
- MOVBU.P Rtmp, 1(Rdst); \
- MOVBU.P 1(Rsrc), Rtmp; \
- MOVBU.P Rtmp, 1(Rdst)
- #define MOVWP_UNALIGNED(Rsrc, Rdst, Rtmp) \
- MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp); \
- MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp)
- TEXT poly1305_finish_ext_armv6<>(SB),4,$-4
- MOVM.DB.W [R4, R5, R6, R7, R8, R9, g, R11, R14], (R13)
- SUB $16, R13, R13
- MOVW R0, R5
- MOVW R1, R6
- MOVW R2, R7
- MOVW R3, R8
- AND.S R2, R2, R2
- BEQ poly1305_finish_ext_armv6_noremaining
- EOR R0, R0
- MOVW R13, R9
- MOVW R0, 0(R13)
- MOVW R0, 4(R13)
- MOVW R0, 8(R13)
- MOVW R0, 12(R13)
- WORD $0xe3110003 // TST R1, #3 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_aligned
- WORD $0xe3120008 // TST R2, #8 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_skip8
- MOVWP_UNALIGNED(R1, R9, g)
- MOVWP_UNALIGNED(R1, R9, g)
- poly1305_finish_ext_armv6_skip8:
- WORD $0xe3120004 // TST $4, R2 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_skip4
- MOVWP_UNALIGNED(R1, R9, g)
- poly1305_finish_ext_armv6_skip4:
- WORD $0xe3120002 // TST $2, R2 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_skip2
- MOVHUP_UNALIGNED(R1, R9, g)
- B poly1305_finish_ext_armv6_skip2
- poly1305_finish_ext_armv6_aligned:
- WORD $0xe3120008 // TST R2, #8 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_skip8_aligned
- MOVM.IA.W (R1), [g-R11]
- MOVM.IA.W [g-R11], (R9)
- poly1305_finish_ext_armv6_skip8_aligned:
- WORD $0xe3120004 // TST $4, R2 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_skip4_aligned
- MOVW.P 4(R1), g
- MOVW.P g, 4(R9)
- poly1305_finish_ext_armv6_skip4_aligned:
- WORD $0xe3120002 // TST $2, R2 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_skip2
- MOVHU.P 2(R1), g
- MOVH.P g, 2(R9)
- poly1305_finish_ext_armv6_skip2:
- WORD $0xe3120001 // TST $1, R2 not working see issue 5921
- BEQ poly1305_finish_ext_armv6_skip1
- MOVBU.P 1(R1), g
- MOVBU.P g, 1(R9)
- poly1305_finish_ext_armv6_skip1:
- MOVW $1, R11
- MOVBU R11, 0(R9)
- MOVW R11, 56(R5)
- MOVW R5, R0
- MOVW R13, R1
- MOVW $16, R2
- BL poly1305_blocks_armv6<>(SB)
- poly1305_finish_ext_armv6_noremaining:
- MOVW 20(R5), R0
- MOVW 24(R5), R1
- MOVW 28(R5), R2
- MOVW 32(R5), R3
- MOVW 36(R5), R4
- MOVW R4>>26, R12
- BIC $0xfc000000, R4, R4
- ADD R12<<2, R12, R12
- ADD R12, R0, R0
- MOVW R0>>26, R12
- BIC $0xfc000000, R0, R0
- ADD R12, R1, R1
- MOVW R1>>26, R12
- BIC $0xfc000000, R1, R1
- ADD R12, R2, R2
- MOVW R2>>26, R12
- BIC $0xfc000000, R2, R2
- ADD R12, R3, R3
- MOVW R3>>26, R12
- BIC $0xfc000000, R3, R3
- ADD R12, R4, R4
- ADD $5, R0, R6
- MOVW R6>>26, R12
- BIC $0xfc000000, R6, R6
- ADD R12, R1, R7
- MOVW R7>>26, R12
- BIC $0xfc000000, R7, R7
- ADD R12, R2, g
- MOVW g>>26, R12
- BIC $0xfc000000, g, g
- ADD R12, R3, R11
- MOVW $-(1<<26), R12
- ADD R11>>26, R12, R12
- BIC $0xfc000000, R11, R11
- ADD R12, R4, R14
- MOVW R14>>31, R12
- SUB $1, R12
- AND R12, R6, R6
- AND R12, R7, R7
- AND R12, g, g
- AND R12, R11, R11
- AND R12, R14, R14
- MVN R12, R12
- AND R12, R0, R0
- AND R12, R1, R1
- AND R12, R2, R2
- AND R12, R3, R3
- AND R12, R4, R4
- ORR R6, R0, R0
- ORR R7, R1, R1
- ORR g, R2, R2
- ORR R11, R3, R3
- ORR R14, R4, R4
- ORR R1<<26, R0, R0
- MOVW R1>>6, R1
- ORR R2<<20, R1, R1
- MOVW R2>>12, R2
- ORR R3<<14, R2, R2
- MOVW R3>>18, R3
- ORR R4<<8, R3, R3
- MOVW 40(R5), R6
- MOVW 44(R5), R7
- MOVW 48(R5), g
- MOVW 52(R5), R11
- ADD.S R6, R0, R0
- ADC.S R7, R1, R1
- ADC.S g, R2, R2
- ADC.S R11, R3, R3
- MOVM.IA [R0-R3], (R8)
- MOVW R5, R12
- EOR R0, R0, R0
- EOR R1, R1, R1
- EOR R2, R2, R2
- EOR R3, R3, R3
- EOR R4, R4, R4
- EOR R5, R5, R5
- EOR R6, R6, R6
- EOR R7, R7, R7
- MOVM.IA.W [R0-R7], (R12)
- MOVM.IA [R0-R7], (R12)
- ADD $16, R13, R13
- MOVM.IA.W (R13), [R4, R5, R6, R7, R8, R9, g, R11, R14]
- RET
- // func poly1305_auth_armv6(out *[16]byte, m *byte, mlen uint32, key *[32]key)
- TEXT ·poly1305_auth_armv6(SB),0,$280-16
- MOVW out+0(FP), R4
- MOVW m+4(FP), R5
- MOVW mlen+8(FP), R6
- MOVW key+12(FP), R7
- MOVW R13, R8
- BIC $63, R13
- SUB $64, R13, R13
- MOVW R13, R0
- MOVW R7, R1
- BL poly1305_init_ext_armv6<>(SB)
- BIC.S $15, R6, R2
- BEQ poly1305_auth_armv6_noblocks
- MOVW R13, R0
- MOVW R5, R1
- ADD R2, R5, R5
- SUB R2, R6, R6
- BL poly1305_blocks_armv6<>(SB)
- poly1305_auth_armv6_noblocks:
- MOVW R13, R0
- MOVW R5, R1
- MOVW R6, R2
- MOVW R4, R3
- BL poly1305_finish_ext_armv6<>(SB)
- MOVW R8, R13
- RET
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