Commit 51a08ad7 authored by Niels Möller's avatar Niels Möller
Browse files

Don't allocate space for a stack copy of the input.

Rev: src/nettle/x86/md5-compress.asm:1.5
parent 9424472a
......@@ -24,7 +24,6 @@ define(<SC>,<%ecx>)
define(<SD>,<%edx>)
define(<TMP>,<%ebp>)
define(<INPUT>,<%esi>)
C define(<DATA>,<%esp>)
C %edi is unused
......@@ -72,24 +71,25 @@ define(<ROUND>,<
.align 16
PROLOGUE(_nettle_md5_compress)
C save all registers that need to be saved
pushl %ebx C 76(%esp)
pushl %ebp C 72(%esp)
pushl %esi C 68(%esp)
pushl %edi C 64(%esp)
subl $64, %esp C %esp = W
C 24(%esp) input
C 20(%esp) state
C 16(%esp) Return address
pushl %ebx C 12(%esp)
pushl %ebp C 8(%esp)
pushl %esi C 4(%esp)
pushl %edi C (%esp)
C load the state vector
movl 84(%esp),TMP
movl 20(%esp),TMP
movl (TMP), SA
movl 4(TMP), SB
movl 8(TMP), SC
movl 12(TMP), SD
C Pointer to source data. We copy it to aligned storage
C at %esp when we first use it.
movl 88(%esp), INPUT
C Pointer to source data.
C Note that if analigned, we suffer unaligned accesses
movl 24(%esp), INPUT
ROUND(<F1>, SA, SB, SC, SD, REF( 0), $0xd76aa478, 7)
ROUND(<F1>, SD, SA, SB, SC, REF( 1), $0xe8c7b756, 12)
......@@ -160,13 +160,12 @@ PROLOGUE(_nettle_md5_compress)
ROUND(<F4>, SB, SC, SD, SA, REF( 9), $0xeb86d391, 21)
C Update the state vector
movl 84(%esp),TMP
movl 20(%esp),TMP
addl SA, (TMP)
addl SB, 4(TMP)
addl SC, 8(TMP)
addl SD, 12(TMP)
addl $64, %esp
popl %edi
popl %esi
popl %ebp
......
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