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.file "sha1core.S"
.text
.p2align 4,,15
.global sha160_core
.type sha160_core, @function
sha160_core:
pushl %edi
pushl %esi
movl 16(%esp), %ecx # byte input[64]
movl 20(%esp), %edi # u32bit W[80]
movl $0, %esi # loop counter
.p2align 4,,7
.LOAD_INPUT_LOOP:
movl 0(%ecx), %eax
addl $4, %ecx
incl %esi
bswapl %eax
movl %eax, -4(%edi,%esi,4)
cmpl $16, %esi
jne .LOAD_INPUT_LOOP
leal 64(%edi), %edx
movl $16, %ecx
// here esi == 16
.EXPANSION_LOOP:
movl -32(%edx), %eax
xorl -12(%edx), %eax
incl %ecx
xorl -56(%edx), %eax
xorl -64(%edx), %eax
rorl $31, %eax
movl %eax, (%edx)
addl $4, %edx
cmpl $80, %ecx
jne .EXPANSION_LOOP
popl %esi
popl %edi
ret
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