130 lines
1.5 KiB
ArmAsm
130 lines
1.5 KiB
ArmAsm
#include "arm_arch.h"
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.text
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.align 5
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.globl __armv7_neon_probe
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__armv7_neon_probe:
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orr v15.16b, v15.16b, v15.16b
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ret
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.globl __armv7_tick
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__armv7_tick:
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#ifdef __APPLE__
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mrs x0, CNTPCT_EL0
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#else
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mrs x0, CNTVCT_EL0
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#endif
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ret
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.globl __armv8_aes_probe
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__armv8_aes_probe:
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aese v0.16b, v0.16b
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ret
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.globl __armv8_sha1_probe
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__armv8_sha1_probe:
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sha1h s0, s0
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ret
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.globl __armv8_sha256_probe
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__armv8_sha256_probe:
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sha256su0 v0.4s, v0.4s
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ret
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.globl __armv8_pmull_probe
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__armv8_pmull_probe:
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pmull v0.1q, v0.1d, v0.1d
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ret
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.globl __armv8_sha512_probe
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__armv8_sha512_probe:
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.long 0xcec08000 // sha512su0 v0.2d,v0.2d
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ret
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.globl __armv8_cpuid_probe
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__armv8_cpuid_probe:
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mrs x0, midr_el1
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ret
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.globl _OPENSSL_cleanse
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.align 5
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_OPENSSL_cleanse:
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cbz x1,Lret // len==0?
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cmp x1,#15
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b.hi Lot // len>15
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nop
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Little:
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strb wzr,[x0],#1 // store byte-by-byte
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subs x1,x1,#1
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b.ne Little
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Lret: ret
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.align 4
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Lot: tst x0,#7
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b.eq Laligned // inp is aligned
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strb wzr,[x0],#1 // store byte-by-byte
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sub x1,x1,#1
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b Lot
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.align 4
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Laligned:
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str xzr,[x0],#8 // store word-by-word
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sub x1,x1,#8
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tst x1,#-8
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b.ne Laligned // len>=8
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cbnz x1,Little // len!=0?
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ret
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.globl _CRYPTO_memcmp
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.align 4
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_CRYPTO_memcmp:
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eor w3,w3,w3
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cbz x2,Lno_data // len==0?
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cmp x2,#16
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b.ne Loop_cmp
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ldp x8,x9,[x0]
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ldp x10,x11,[x1]
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eor x8,x8,x10
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eor x9,x9,x11
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orr x8,x8,x9
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mov x0,#1
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cmp x8,#0
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csel x0,xzr,x0,eq
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ret
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.align 4
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Loop_cmp:
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ldrb w4,[x0],#1
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ldrb w5,[x1],#1
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eor w4,w4,w5
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orr w3,w3,w4
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subs x2,x2,#1
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b.ne Loop_cmp
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Lno_data:
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neg w0,w3
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lsr w0,w0,#31
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ret
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