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| author | rsc <devnull@localhost> | 2004-05-09 16:10:31 +0000 |
|---|---|---|
| committer | rsc <devnull@localhost> | 2004-05-09 16:10:31 +0000 |
| commit | 2f05c0e86db5b0362ce0cc2e4a6d3a8fcd3a5827 (patch) | |
| tree | 488cba5f46b0915c74ce9fb53f15135e49aaa759 /src/libsec | |
| parent | 2e965b3324b32be00a2193bf304dcb936f02824b (diff) | |
| download | plan9port-2f05c0e86db5b0362ce0cc2e4a6d3a8fcd3a5827.tar.gz plan9port-2f05c0e86db5b0362ce0cc2e4a6d3a8fcd3a5827.tar.bz2 plan9port-2f05c0e86db5b0362ce0cc2e4a6d3a8fcd3a5827.zip | |
It's bad form to access data *below* the stack pointer.
Diffstat (limited to 'src/libsec')
| -rw-r--r-- | src/libsec/386/sha1block.spp | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/src/libsec/386/sha1block.spp b/src/libsec/386/sha1block.spp index 7d0696d0..cb8708f8 100644 --- a/src/libsec/386/sha1block.spp +++ b/src/libsec/386/sha1block.spp @@ -75,9 +75,10 @@ _sha1block: * stack offsets * void sha1block(uchar *DATA, int LEN, ulong *STATE) */ -#define DATA 8 -#define LEN 12 -#define STATE 16 +#define STACKSIZE (48+80*4) +#define DATA (STACKSIZE+8) +#define LEN (STACKSIZE+12) +#define STATE (STACKSIZE+16) /* * stack offsets for locals @@ -89,20 +90,22 @@ _sha1block: * ulong a = eax, b = ebx, c = ecx, d = edx, e = esi * ulong tmp = edi */ -#define WARRAY (-4-(80*4)) -#define TMP1 (-8-(80*4)) -#define TMP2 (-12-(80*4)) -#define W15 (-16-(80*4)) -#define W40 (-20-(80*4)) -#define W60 (-24-(80*4)) -#define W80 (-28-(80*4)) -#define EDATA (-32-(80*4)) -#define OLDEBX (-36-(80*4)) -#define OLDESI (-40-(80*4)) -#define OLDEDI (-44-(80*4)) +#define WARRAY (STACKSIZE-4-(80*4)) +#define TMP1 (STACKSIZE-8-(80*4)) +#define TMP2 (STACKSIZE-12-(80*4)) +#define W15 (STACKSIZE-16-(80*4)) +#define W40 (STACKSIZE-20-(80*4)) +#define W60 (STACKSIZE-24-(80*4)) +#define W80 (STACKSIZE-28-(80*4)) +#define EDATA (STACKSIZE-32-(80*4)) +#define OLDEBX (STACKSIZE-36-(80*4)) +#define OLDESI (STACKSIZE-40-(80*4)) +#define OLDEDI (STACKSIZE-44-(80*4)) /* Prelude */ pushl %ebp + subl $(STACKSIZE), %esp + mov %ebx, OLDEBX(%esp) mov %esi, OLDESI(%esp) mov %edi, OLDEDI(%esp) @@ -209,6 +212,6 @@ loop4: mov OLDEBX(%esp), %ebx mov OLDESI(%esp), %esi mov OLDEDI(%esp), %edi - movl %esp, %ebp - leave + addl $(STACKSIZE), %esp + popl %ebp ret |