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libbb/sha1: in unrolled x86-64 code, pass initial W[] in registers, not on stack

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This can be faster on some CPUs.
On Skylake, evidently load latency from L1 (or store-to-load
forwarding in LSU) is fast enough to completely hide
memory reference latencies here.

function                                             old     new   delta
sha1_process_block64                                3495    3514     +19

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2022-01-25 17:00:57 +01:00
parent 99e22d230d
commit 205042c07a
2 changed files with 216 additions and 207 deletions
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216
libbb/hash_md5_sha_x86-64.S
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@ -1,7 +1,7 @@
### Generated by hash_md5_sha_x86-64.S.sh ### ### Generated by hash_md5_sha_x86-64.S.sh ###
#if CONFIG_SHA1_SMALL == 0 && defined(__GNUC__) && defined(__x86_64__) #if CONFIG_SHA1_SMALL == 0 && defined(__GNUC__) && defined(__x86_64__)
.section .text.sha1_process_block64,"ax",@progbits .section .text.sha1_process_block64, "ax", @progbits
.globl sha1_process_block64 .globl sha1_process_block64
.hidden sha1_process_block64 .hidden sha1_process_block64
.type sha1_process_block64, @function .type sha1_process_block64, @function
@ -10,7 +10,7 @@
sha1_process_block64: sha1_process_block64:
pushq %rbp # 1 byte insn pushq %rbp # 1 byte insn
pushq %rbx # 1 byte insn pushq %rbx # 1 byte insn
pushq %r15 # 2 byte insn # pushq %r15 # 2 byte insn
pushq %r14 # 2 byte insn pushq %r14 # 2 byte insn
pushq %r13 # 2 byte insn pushq %r13 # 2 byte insn
pushq %r12 # 2 byte insn pushq %r12 # 2 byte insn
@ -19,7 +19,8 @@ sha1_process_block64:
#Register and stack use: #Register and stack use:
# eax..edx: a..d # eax..edx: a..d
# ebp: e # ebp: e
# esi,edi: temps # esi,edi,r8..r14: temps
# r15: unused
# xmm0..xmm3: W[] # xmm0..xmm3: W[]
# xmm4,xmm5: temps # xmm4,xmm5: temps
# xmm6: current round constant # xmm6: current round constant
@ -33,147 +34,148 @@ sha1_process_block64:
movaps rconst0x5A827999(%rip), %xmm6 movaps rconst0x5A827999(%rip), %xmm6
# For round 1, steps 0 and 8..15, we pass W[0,8..15] in esi,r8..r15 # Load W[] to xmm registers, byteswapping on the fly.
# instead of spilling them to stack. #
# (We lose parallelized addition of RCONST, but LEA # For iterations 0..15, we pass W[] in rsi,r8..r14
# can do two additions at once, so...) # for use in RD1A's instead of spilling them to stack.
# We lose parallelized addition of RCONST, but LEA
# can do two additions at once, so it's probably a wash.
# (We use rsi instead of rN because this makes two
# LEAs in two first RD1A's shorter by one byte).
movq 4*0(%rdi), %rsi movq 4*0(%rdi), %rsi
movq 4*2(%rdi), %r10 movq 4*2(%rdi), %r8
bswapq %rsi bswapq %rsi
bswapq %r10 bswapq %r8
rolq $32, %rsi # rsi = W[1]:W[0] rolq $32, %rsi # rsi = W[1]:W[0]
rolq $32, %r10 rolq $32, %r8 # r8 = W[3]:W[2]
movq %rsi, %xmm0 movq %rsi, %xmm0
movq %r10, %xmm4 movq %r8, %xmm4
punpcklqdq %xmm4, %xmm0 # xmm0 = r10:rsi = (W[0],W[1],W[2],W[3]) punpcklqdq %xmm4, %xmm0 # xmm0 = r8:rsi = (W[0],W[1],W[2],W[3])
movaps %xmm0, %xmm4 # movaps %xmm0, %xmm4 # add RCONST, spill to stack
paddd %xmm6, %xmm4 # paddd %xmm6, %xmm4
movups %xmm4, -64+4*0(%rsp) # movups %xmm4, -64+16*0(%rsp)
movq 4*4(%rdi), %r8 movq 4*4(%rdi), %r9
movq 4*6(%rdi), %r10 movq 4*6(%rdi), %r10
bswapq %r8 bswapq %r9
bswapq %r10 bswapq %r10
rolq $32, %r8 rolq $32, %r9 # r9 = W[5]:W[4]
rolq $32, %r10 rolq $32, %r10 # r10 = W[7]:W[6]
movq %r8, %xmm1 movq %r9, %xmm1
movq %r10, %xmm4 movq %r10, %xmm4
punpcklqdq %xmm4, %xmm1 # xmm1 = r10:r8 = (W[4],W[5],W[6],W[7]) punpcklqdq %xmm4, %xmm1 # xmm1 = r10:r9 = (W[4],W[5],W[6],W[7])
movaps %xmm1, %xmm4
paddd %xmm6, %xmm4
movups %xmm4, -64+4*4(%rsp)
movq 4*8(%rdi), %r8 movq 4*8(%rdi), %r11
movq 4*10(%rdi), %r10 movq 4*10(%rdi), %r12
bswapq %r8 bswapq %r11
bswapq %r10
movl %r8d, %r9d # r9d = W[9]
rolq $32, %r8 # r8 = W[9]:W[8]
movl %r10d, %r11d # r11d = W[11]
rolq $32, %r10 # r10 = W[11]:W[10]
movq %r8, %xmm2
movq %r10, %xmm4
punpcklqdq %xmm4, %xmm2 # xmm2 = r10:r8 = (W[8],W[9],W[10],W[11])
movq 4*12(%rdi), %r12
movq 4*14(%rdi), %r14
bswapq %r12 bswapq %r12
rolq $32, %r11 # r11 = W[9]:W[8]
rolq $32, %r12 # r12 = W[11]:W[10]
movq %r11, %xmm2
movq %r12, %xmm4
punpcklqdq %xmm4, %xmm2 # xmm2 = r12:r11 = (W[8],W[9],W[10],W[11])
movq 4*12(%rdi), %r13
movq 4*14(%rdi), %r14
bswapq %r13
bswapq %r14 bswapq %r14
movl %r12d, %r13d # r13d = W[13] rolq $32, %r13 # r13 = W[13]:W[12]
rolq $32, %r12 # r12 = W[13]:W[12]
movl %r14d, %r15d # r15d = W[15]
rolq $32, %r14 # r14 = W[15]:W[14] rolq $32, %r14 # r14 = W[15]:W[14]
movq %r12, %xmm3 movq %r13, %xmm3
movq %r14, %xmm4 movq %r14, %xmm4
punpcklqdq %xmm4, %xmm3 # xmm3 = r14:r12 = (W[12],W[13],W[14],W[15]) punpcklqdq %xmm4, %xmm3 # xmm3 = r14:r13 = (W[12],W[13],W[14],W[15])
# 0 # 0
leal 0x5A827999(%rbp,%rsi), %ebp # e += RCONST + W[n] leal 0x5A827999(%rbp,%rsi), %ebp # e += RCONST + W[n]
shrq $32, %rsi
movl %ecx, %edi # c movl %ecx, %edi # c
xorl %edx, %edi # ^d xorl %edx, %edi # ^d
andl %ebx, %edi # &b andl %ebx, %edi # &b
xorl %edx, %edi # (((c ^ d) & b) ^ d) xorl %edx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ebp # e += (((c ^ d) & b) ^ d) addl %edi, %ebp # e += (((c ^ d) & b) ^ d)
movl %eax, %esi # movl %eax, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ebp # e += rotl32(a,5) addl %edi, %ebp # e += rotl32(a,5)
rorl $2, %ebx # b = rotl32(b,30) rorl $2, %ebx # b = rotl32(b,30)
# 1 # 1
addl -64+4*1(%rsp), %edx # e += RCONST + W[n] leal 0x5A827999(%rdx,%rsi), %edx # e += RCONST + W[n]
movl %ebx, %edi # c movl %ebx, %edi # c
xorl %ecx, %edi # ^d xorl %ecx, %edi # ^d
andl %eax, %edi # &b andl %eax, %edi # &b
xorl %ecx, %edi # (((c ^ d) & b) ^ d) xorl %ecx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %edx # e += (((c ^ d) & b) ^ d) addl %edi, %edx # e += (((c ^ d) & b) ^ d)
movl %ebp, %esi # movl %ebp, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %edx # e += rotl32(a,5) addl %edi, %edx # e += rotl32(a,5)
rorl $2, %eax # b = rotl32(b,30) rorl $2, %eax # b = rotl32(b,30)
# 2 # 2
addl -64+4*2(%rsp), %ecx # e += RCONST + W[n] leal 0x5A827999(%rcx,%r8), %ecx # e += RCONST + W[n]
shrq $32, %r8
movl %eax, %edi # c movl %eax, %edi # c
xorl %ebx, %edi # ^d xorl %ebx, %edi # ^d
andl %ebp, %edi # &b andl %ebp, %edi # &b
xorl %ebx, %edi # (((c ^ d) & b) ^ d) xorl %ebx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ecx # e += (((c ^ d) & b) ^ d) addl %edi, %ecx # e += (((c ^ d) & b) ^ d)
movl %edx, %esi # movl %edx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ecx # e += rotl32(a,5) addl %edi, %ecx # e += rotl32(a,5)
rorl $2, %ebp # b = rotl32(b,30) rorl $2, %ebp # b = rotl32(b,30)
# 3 # 3
addl -64+4*3(%rsp), %ebx # e += RCONST + W[n] leal 0x5A827999(%rbx,%r8), %ebx # e += RCONST + W[n]
movl %ebp, %edi # c movl %ebp, %edi # c
xorl %eax, %edi # ^d xorl %eax, %edi # ^d
andl %edx, %edi # &b andl %edx, %edi # &b
xorl %eax, %edi # (((c ^ d) & b) ^ d) xorl %eax, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ebx # e += (((c ^ d) & b) ^ d) addl %edi, %ebx # e += (((c ^ d) & b) ^ d)
movl %ecx, %esi # movl %ecx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ebx # e += rotl32(a,5) addl %edi, %ebx # e += rotl32(a,5)
rorl $2, %edx # b = rotl32(b,30) rorl $2, %edx # b = rotl32(b,30)
# 4 # 4
addl -64+4*4(%rsp), %eax # e += RCONST + W[n] leal 0x5A827999(%rax,%r9), %eax # e += RCONST + W[n]
shrq $32, %r9
movl %edx, %edi # c movl %edx, %edi # c
xorl %ebp, %edi # ^d xorl %ebp, %edi # ^d
andl %ecx, %edi # &b andl %ecx, %edi # &b
xorl %ebp, %edi # (((c ^ d) & b) ^ d) xorl %ebp, %edi # (((c ^ d) & b) ^ d)
addl %edi, %eax # e += (((c ^ d) & b) ^ d) addl %edi, %eax # e += (((c ^ d) & b) ^ d)
movl %ebx, %esi # movl %ebx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %eax # e += rotl32(a,5) addl %edi, %eax # e += rotl32(a,5)
rorl $2, %ecx # b = rotl32(b,30) rorl $2, %ecx # b = rotl32(b,30)
# 5 # 5
addl -64+4*5(%rsp), %ebp # e += RCONST + W[n] leal 0x5A827999(%rbp,%r9), %ebp # e += RCONST + W[n]
movl %ecx, %edi # c movl %ecx, %edi # c
xorl %edx, %edi # ^d xorl %edx, %edi # ^d
andl %ebx, %edi # &b andl %ebx, %edi # &b
xorl %edx, %edi # (((c ^ d) & b) ^ d) xorl %edx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ebp # e += (((c ^ d) & b) ^ d) addl %edi, %ebp # e += (((c ^ d) & b) ^ d)
movl %eax, %esi # movl %eax, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ebp # e += rotl32(a,5) addl %edi, %ebp # e += rotl32(a,5)
rorl $2, %ebx # b = rotl32(b,30) rorl $2, %ebx # b = rotl32(b,30)
# 6 # 6
addl -64+4*6(%rsp), %edx # e += RCONST + W[n] leal 0x5A827999(%rdx,%r10), %edx # e += RCONST + W[n]
shrq $32, %r10
movl %ebx, %edi # c movl %ebx, %edi # c
xorl %ecx, %edi # ^d xorl %ecx, %edi # ^d
andl %eax, %edi # &b andl %eax, %edi # &b
xorl %ecx, %edi # (((c ^ d) & b) ^ d) xorl %ecx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %edx # e += (((c ^ d) & b) ^ d) addl %edi, %edx # e += (((c ^ d) & b) ^ d)
movl %ebp, %esi # movl %ebp, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %edx # e += rotl32(a,5) addl %edi, %edx # e += rotl32(a,5)
rorl $2, %eax # b = rotl32(b,30) rorl $2, %eax # b = rotl32(b,30)
# 7 # 7
addl -64+4*7(%rsp), %ecx # e += RCONST + W[n] leal 0x5A827999(%rcx,%r10), %ecx # e += RCONST + W[n]
movl %eax, %edi # c movl %eax, %edi # c
xorl %ebx, %edi # ^d xorl %ebx, %edi # ^d
andl %ebp, %edi # &b andl %ebp, %edi # &b
xorl %ebx, %edi # (((c ^ d) & b) ^ d) xorl %ebx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ecx # e += (((c ^ d) & b) ^ d) addl %edi, %ecx # e += (((c ^ d) & b) ^ d)
movl %edx, %esi # movl %edx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ecx # e += rotl32(a,5) addl %edi, %ecx # e += rotl32(a,5)
rorl $2, %ebp # b = rotl32(b,30) rorl $2, %ebp # b = rotl32(b,30)
# PREP %xmm0 %xmm1 %xmm2 %xmm3 -64+16*0(%rsp) # PREP %xmm0 %xmm1 %xmm2 %xmm3 -64+16*0(%rsp)
movaps %xmm3, %xmm4 movaps %xmm3, %xmm4
@ -201,48 +203,50 @@ sha1_process_block64:
paddd %xmm6, %xmm5 paddd %xmm6, %xmm5
movups %xmm5, -64+16*0(%rsp) movups %xmm5, -64+16*0(%rsp)
# 8 # 8
leal 0x5A827999(%rbx,%r8), %ebx # e += RCONST + W[n] leal 0x5A827999(%rbx,%r11), %ebx # e += RCONST + W[n]
shrq $32, %r11
movl %ebp, %edi # c movl %ebp, %edi # c
xorl %eax, %edi # ^d xorl %eax, %edi # ^d
andl %edx, %edi # &b andl %edx, %edi # &b
xorl %eax, %edi # (((c ^ d) & b) ^ d) xorl %eax, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ebx # e += (((c ^ d) & b) ^ d) addl %edi, %ebx # e += (((c ^ d) & b) ^ d)
movl %ecx, %esi # movl %ecx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ebx # e += rotl32(a,5) addl %edi, %ebx # e += rotl32(a,5)
rorl $2, %edx # b = rotl32(b,30) rorl $2, %edx # b = rotl32(b,30)
# 9 # 9
leal 0x5A827999(%rax,%r9), %eax # e += RCONST + W[n] leal 0x5A827999(%rax,%r11), %eax # e += RCONST + W[n]
movl %edx, %edi # c movl %edx, %edi # c
xorl %ebp, %edi # ^d xorl %ebp, %edi # ^d
andl %ecx, %edi # &b andl %ecx, %edi # &b
xorl %ebp, %edi # (((c ^ d) & b) ^ d) xorl %ebp, %edi # (((c ^ d) & b) ^ d)
addl %edi, %eax # e += (((c ^ d) & b) ^ d) addl %edi, %eax # e += (((c ^ d) & b) ^ d)
movl %ebx, %esi # movl %ebx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %eax # e += rotl32(a,5) addl %edi, %eax # e += rotl32(a,5)
rorl $2, %ecx # b = rotl32(b,30) rorl $2, %ecx # b = rotl32(b,30)
# 10 # 10
leal 0x5A827999(%rbp,%r10), %ebp # e += RCONST + W[n] leal 0x5A827999(%rbp,%r12), %ebp # e += RCONST + W[n]
shrq $32, %r12
movl %ecx, %edi # c movl %ecx, %edi # c
xorl %edx, %edi # ^d xorl %edx, %edi # ^d
andl %ebx, %edi # &b andl %ebx, %edi # &b
xorl %edx, %edi # (((c ^ d) & b) ^ d) xorl %edx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ebp # e += (((c ^ d) & b) ^ d) addl %edi, %ebp # e += (((c ^ d) & b) ^ d)
movl %eax, %esi # movl %eax, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ebp # e += rotl32(a,5) addl %edi, %ebp # e += rotl32(a,5)
rorl $2, %ebx # b = rotl32(b,30) rorl $2, %ebx # b = rotl32(b,30)
# 11 # 11
leal 0x5A827999(%rdx,%r11), %edx # e += RCONST + W[n] leal 0x5A827999(%rdx,%r12), %edx # e += RCONST + W[n]
movl %ebx, %edi # c movl %ebx, %edi # c
xorl %ecx, %edi # ^d xorl %ecx, %edi # ^d
andl %eax, %edi # &b andl %eax, %edi # &b
xorl %ecx, %edi # (((c ^ d) & b) ^ d) xorl %ecx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %edx # e += (((c ^ d) & b) ^ d) addl %edi, %edx # e += (((c ^ d) & b) ^ d)
movl %ebp, %esi # movl %ebp, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %edx # e += rotl32(a,5) addl %edi, %edx # e += rotl32(a,5)
rorl $2, %eax # b = rotl32(b,30) rorl $2, %eax # b = rotl32(b,30)
movaps rconst0x6ED9EBA1(%rip), %xmm6 movaps rconst0x6ED9EBA1(%rip), %xmm6
# PREP %xmm1 %xmm2 %xmm3 %xmm0 -64+16*1(%rsp) # PREP %xmm1 %xmm2 %xmm3 %xmm0 -64+16*1(%rsp)
@ -271,15 +275,16 @@ sha1_process_block64:
paddd %xmm6, %xmm5 paddd %xmm6, %xmm5
movups %xmm5, -64+16*1(%rsp) movups %xmm5, -64+16*1(%rsp)
# 12 # 12
leal 0x5A827999(%rcx,%r12), %ecx # e += RCONST + W[n] leal 0x5A827999(%rcx,%r13), %ecx # e += RCONST + W[n]
shrq $32, %r13
movl %eax, %edi # c movl %eax, %edi # c
xorl %ebx, %edi # ^d xorl %ebx, %edi # ^d
andl %ebp, %edi # &b andl %ebp, %edi # &b
xorl %ebx, %edi # (((c ^ d) & b) ^ d) xorl %ebx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ecx # e += (((c ^ d) & b) ^ d) addl %edi, %ecx # e += (((c ^ d) & b) ^ d)
movl %edx, %esi # movl %edx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ecx # e += rotl32(a,5) addl %edi, %ecx # e += rotl32(a,5)
rorl $2, %ebp # b = rotl32(b,30) rorl $2, %ebp # b = rotl32(b,30)
# 13 # 13
leal 0x5A827999(%rbx,%r13), %ebx # e += RCONST + W[n] leal 0x5A827999(%rbx,%r13), %ebx # e += RCONST + W[n]
@ -288,31 +293,32 @@ sha1_process_block64:
andl %edx, %edi # &b andl %edx, %edi # &b
xorl %eax, %edi # (((c ^ d) & b) ^ d) xorl %eax, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ebx # e += (((c ^ d) & b) ^ d) addl %edi, %ebx # e += (((c ^ d) & b) ^ d)
movl %ecx, %esi # movl %ecx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ebx # e += rotl32(a,5) addl %edi, %ebx # e += rotl32(a,5)
rorl $2, %edx # b = rotl32(b,30) rorl $2, %edx # b = rotl32(b,30)
# 14 # 14
leal 0x5A827999(%rax,%r14), %eax # e += RCONST + W[n] leal 0x5A827999(%rax,%r14), %eax # e += RCONST + W[n]
shrq $32, %r14
movl %edx, %edi # c movl %edx, %edi # c
xorl %ebp, %edi # ^d xorl %ebp, %edi # ^d
andl %ecx, %edi # &b andl %ecx, %edi # &b
xorl %ebp, %edi # (((c ^ d) & b) ^ d) xorl %ebp, %edi # (((c ^ d) & b) ^ d)
addl %edi, %eax # e += (((c ^ d) & b) ^ d) addl %edi, %eax # e += (((c ^ d) & b) ^ d)
movl %ebx, %esi # movl %ebx, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %eax # e += rotl32(a,5) addl %edi, %eax # e += rotl32(a,5)
rorl $2, %ecx # b = rotl32(b,30) rorl $2, %ecx # b = rotl32(b,30)
# 15 # 15
leal 0x5A827999(%rbp,%r15), %ebp # e += RCONST + W[n] leal 0x5A827999(%rbp,%r14), %ebp # e += RCONST + W[n]
movl %ecx, %edi # c movl %ecx, %edi # c
xorl %edx, %edi # ^d xorl %edx, %edi # ^d
andl %ebx, %edi # &b andl %ebx, %edi # &b
xorl %edx, %edi # (((c ^ d) & b) ^ d) xorl %edx, %edi # (((c ^ d) & b) ^ d)
addl %edi, %ebp # e += (((c ^ d) & b) ^ d) addl %edi, %ebp # e += (((c ^ d) & b) ^ d)
movl %eax, %esi # movl %eax, %edi #
roll $5, %esi # rotl32(a,5) roll $5, %edi # rotl32(a,5)
addl %esi, %ebp # e += rotl32(a,5) addl %edi, %ebp # e += rotl32(a,5)
rorl $2, %ebx # b = rotl32(b,30) rorl $2, %ebx # b = rotl32(b,30)
# PREP %xmm2 %xmm3 %xmm0 %xmm1 -64+16*2(%rsp) # PREP %xmm2 %xmm3 %xmm0 %xmm1 -64+16*2(%rsp)
movaps %xmm1, %xmm4 movaps %xmm1, %xmm4
@ -1378,7 +1384,7 @@ sha1_process_block64:
addl %ebx, 84(%rdi) # ctx->hash[1] += b addl %ebx, 84(%rdi) # ctx->hash[1] += b
popq %r14 # popq %r14 #
addl %ecx, 88(%rdi) # ctx->hash[2] += c addl %ecx, 88(%rdi) # ctx->hash[2] += c
popq %r15 # # popq %r15 #
addl %edx, 92(%rdi) # ctx->hash[3] += d addl %edx, 92(%rdi) # ctx->hash[3] += d
popq %rbx # popq %rbx #
addl %ebp, 96(%rdi) # ctx->hash[4] += e addl %ebp, 96(%rdi) # ctx->hash[4] += e

105
libbb/hash_md5_sha_x86-64.S.sh
View File

@ -102,7 +102,7 @@ echo \
"### Generated by hash_md5_sha_x86-64.S.sh ### "### Generated by hash_md5_sha_x86-64.S.sh ###
#if CONFIG_SHA1_SMALL == 0 && defined(__GNUC__) && defined(__x86_64__) #if CONFIG_SHA1_SMALL == 0 && defined(__GNUC__) && defined(__x86_64__)
.section .text.sha1_process_block64,\"ax\",@progbits .section .text.sha1_process_block64, \"ax\", @progbits
.globl sha1_process_block64 .globl sha1_process_block64
.hidden sha1_process_block64 .hidden sha1_process_block64
.type sha1_process_block64, @function .type sha1_process_block64, @function
@ -111,7 +111,7 @@ echo \
sha1_process_block64: sha1_process_block64:
pushq %rbp # 1 byte insn pushq %rbp # 1 byte insn
pushq %rbx # 1 byte insn pushq %rbx # 1 byte insn
pushq %r15 # 2 byte insn # pushq %r15 # 2 byte insn
pushq %r14 # 2 byte insn pushq %r14 # 2 byte insn
pushq %r13 # 2 byte insn pushq %r13 # 2 byte insn
pushq %r12 # 2 byte insn pushq %r12 # 2 byte insn
@ -120,7 +120,8 @@ sha1_process_block64:
#Register and stack use: #Register and stack use:
# eax..edx: a..d # eax..edx: a..d
# ebp: e # ebp: e
# esi,edi: temps # esi,edi,r8..r14: temps
# r15: unused
# xmm0..xmm3: W[] # xmm0..xmm3: W[]
# xmm4,xmm5: temps # xmm4,xmm5: temps
# xmm6: current round constant # xmm6: current round constant
@ -134,59 +135,56 @@ sha1_process_block64:
movaps rconst0x5A827999(%rip), $xmmRCONST movaps rconst0x5A827999(%rip), $xmmRCONST
# For round 1, steps 0 and 8..15, we pass W[0,8..15] in esi,r8..r15 # Load W[] to xmm registers, byteswapping on the fly.
# instead of spilling them to stack. #
# (We lose parallelized addition of RCONST, but LEA # For iterations 0..15, we pass W[] in rsi,r8..r14
# can do two additions at once, so...) # for use in RD1A's instead of spilling them to stack.
# We lose parallelized addition of RCONST, but LEA
# can do two additions at once, so it's probably a wash.
# (We use rsi instead of rN because this makes two
# LEAs in two first RD1A's shorter by one byte).
movq 4*0(%rdi), %rsi movq 4*0(%rdi), %rsi
movq 4*2(%rdi), %r10 movq 4*2(%rdi), %r8
bswapq %rsi bswapq %rsi
bswapq %r10 bswapq %r8
rolq \$32, %rsi # rsi = W[1]:W[0] rolq \$32, %rsi # rsi = W[1]:W[0]
rolq \$32, %r10 rolq \$32, %r8 # r8 = W[3]:W[2]
movq %rsi, %xmm0 movq %rsi, %xmm0
movq %r10, $xmmT1 movq %r8, $xmmT1
punpcklqdq $xmmT1, %xmm0 # xmm0 = r10:rsi = (W[0],W[1],W[2],W[3]) punpcklqdq $xmmT1, %xmm0 # xmm0 = r8:rsi = (W[0],W[1],W[2],W[3])
movaps %xmm0, $xmmT1 # movaps %xmm0, $xmmT1 # add RCONST, spill to stack
paddd $xmmRCONST, $xmmT1 # paddd $xmmRCONST, $xmmT1
movups $xmmT1, -64+4*0(%rsp) # movups $xmmT1, -64+16*0(%rsp)
movq 4*4(%rdi), %r8 movq 4*4(%rdi), %r9
movq 4*6(%rdi), %r10 movq 4*6(%rdi), %r10
bswapq %r8 bswapq %r9
bswapq %r10 bswapq %r10
rolq \$32, %r8 rolq \$32, %r9 # r9 = W[5]:W[4]
rolq \$32, %r10 rolq \$32, %r10 # r10 = W[7]:W[6]
movq %r8, %xmm1 movq %r9, %xmm1
movq %r10, $xmmT1 movq %r10, $xmmT1
punpcklqdq $xmmT1, %xmm1 # xmm1 = r10:r8 = (W[4],W[5],W[6],W[7]) punpcklqdq $xmmT1, %xmm1 # xmm1 = r10:r9 = (W[4],W[5],W[6],W[7])
movaps %xmm1, $xmmT1
paddd $xmmRCONST, $xmmT1
movups $xmmT1, -64+4*4(%rsp)
movq 4*8(%rdi), %r8 movq 4*8(%rdi), %r11
movq 4*10(%rdi), %r10 movq 4*10(%rdi), %r12
bswapq %r8 bswapq %r11
bswapq %r10
movl %r8d, %r9d # r9d = W[9]
rolq \$32, %r8 # r8 = W[9]:W[8]
movl %r10d, %r11d # r11d = W[11]
rolq \$32, %r10 # r10 = W[11]:W[10]
movq %r8, %xmm2
movq %r10, $xmmT1
punpcklqdq $xmmT1, %xmm2 # xmm2 = r10:r8 = (W[8],W[9],W[10],W[11])
movq 4*12(%rdi), %r12
movq 4*14(%rdi), %r14
bswapq %r12 bswapq %r12
rolq \$32, %r11 # r11 = W[9]:W[8]
rolq \$32, %r12 # r12 = W[11]:W[10]
movq %r11, %xmm2
movq %r12, $xmmT1
punpcklqdq $xmmT1, %xmm2 # xmm2 = r12:r11 = (W[8],W[9],W[10],W[11])
movq 4*12(%rdi), %r13
movq 4*14(%rdi), %r14
bswapq %r13
bswapq %r14 bswapq %r14
movl %r12d, %r13d # r13d = W[13] rolq \$32, %r13 # r13 = W[13]:W[12]
rolq \$32, %r12 # r12 = W[13]:W[12]
movl %r14d, %r15d # r15d = W[15]
rolq \$32, %r14 # r14 = W[15]:W[14] rolq \$32, %r14 # r14 = W[15]:W[14]
movq %r12, %xmm3 movq %r13, %xmm3
movq %r14, $xmmT1 movq %r14, $xmmT1
punpcklqdq $xmmT1, %xmm3 # xmm3 = r14:r12 = (W[12],W[13],W[14],W[15]) punpcklqdq $xmmT1, %xmm3 # xmm3 = r14:r13 = (W[12],W[13],W[14],W[15])
" "
PREP() { PREP() {
@ -256,23 +254,28 @@ RD1A() {
local a=$1;local b=$2;local c=$3;local d=$4;local e=$5 local a=$1;local b=$2;local c=$3;local d=$4;local e=$5
local n=$(($6)) local n=$(($6))
local n0=$(((n+0) & 15)) local n0=$(((n+0) & 15))
local rN=$((7+n0/2))
echo " echo "
# $n # $n
";test $n0 = 0 && echo " ";test $n0 = 0 && echo "
leal $RCONST(%r$e,%rsi), %e$e # e += RCONST + W[n] leal $RCONST(%r$e,%rsi), %e$e # e += RCONST + W[n]
";test $n0 != 0 && test $n0 -lt 8 && echo " shrq \$32, %rsi
addl -64+4*$n0(%rsp), %e$e # e += RCONST + W[n] ";test $n0 = 1 && echo "
";test $n0 -ge 8 && echo " leal $RCONST(%r$e,%rsi), %e$e # e += RCONST + W[n]
leal $RCONST(%r$e,%r$n0), %e$e # e += RCONST + W[n] ";test $n0 -ge 2 && test $((n0 & 1)) = 0 && echo "
leal $RCONST(%r$e,%r$rN), %e$e # e += RCONST + W[n]
shrq \$32, %r$rN
";test $n0 -ge 2 && test $((n0 & 1)) = 1 && echo "
leal $RCONST(%r$e,%r$rN), %e$e # e += RCONST + W[n]
";echo " ";echo "
movl %e$c, %edi # c movl %e$c, %edi # c
xorl %e$d, %edi # ^d xorl %e$d, %edi # ^d
andl %e$b, %edi # &b andl %e$b, %edi # &b
xorl %e$d, %edi # (((c ^ d) & b) ^ d) xorl %e$d, %edi # (((c ^ d) & b) ^ d)
addl %edi, %e$e # e += (((c ^ d) & b) ^ d) addl %edi, %e$e # e += (((c ^ d) & b) ^ d)
movl %e$a, %esi # movl %e$a, %edi #
roll \$5, %esi # rotl32(a,5) roll \$5, %edi # rotl32(a,5)
addl %esi, %e$e # e += rotl32(a,5) addl %edi, %e$e # e += rotl32(a,5)
rorl \$2, %e$b # b = rotl32(b,30) rorl \$2, %e$b # b = rotl32(b,30)
" "
} }
@ -420,7 +423,7 @@ echo "
addl %ebx, 84(%rdi) # ctx->hash[1] += b addl %ebx, 84(%rdi) # ctx->hash[1] += b
popq %r14 # popq %r14 #
addl %ecx, 88(%rdi) # ctx->hash[2] += c addl %ecx, 88(%rdi) # ctx->hash[2] += c
popq %r15 # # popq %r15 #
addl %edx, 92(%rdi) # ctx->hash[3] += d addl %edx, 92(%rdi) # ctx->hash[3] += d
popq %rbx # popq %rbx #
addl %ebp, 96(%rdi) # ctx->hash[4] += e addl %ebp, 96(%rdi) # ctx->hash[4] += e