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Russ Cox
parent
e10503f019
commit
f493c9c544
@ -43,7 +43,7 @@
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#define S43 15
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#define S44 21
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#define PAYME(x) $##x
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#define PAYME(x) $ ## x
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/*
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* SI is data
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@ -102,14 +102,16 @@
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orl B, %edi;\
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xorl C, %edi;\
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#define DATA 8
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#define LEN 12
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#define STATE 16
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#define STACKSIZE 20
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#define EDATA (-4)
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#define OLDEBX (-8)
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#define OLDESI (-12)
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#define OLDEDI (-16)
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#define DATA (STACKSIZE+8)
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#define LEN (STACKSIZE+12)
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#define STATE (STACKSIZE+16)
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#define EDATA (STACKSIZE-4)
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#define OLDEBX (STACKSIZE-8)
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#define OLDESI (STACKSIZE-12)
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#define OLDEDI (STACKSIZE-16)
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.text
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@ -120,6 +122,7 @@
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/* Prelude */
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pushl %ebp
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subl $(STACKSIZE), %esp
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movl %ebx, OLDEBX(%esp)
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movl %esi, OLDESI(%esp)
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movl %edi, OLDEDI(%esp)
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@ -130,7 +133,7 @@
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movl DATA(%esp), %ebp
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mainloop:
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0:
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movl STATE(%esp), %esi
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movl (%esi), %eax
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movl 4(%esi), %ebx
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@ -229,13 +232,13 @@ mainloop:
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movl EDATA(%esp), %edi
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cmpl %edi, %ebp
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jb mainloop
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jb 0b
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/* Postlude */
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movl OLDEBX(%esp), %ebx
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movl OLDESI(%esp), %esi
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movl OLDEDI(%esp), %edi
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movl %esp, %ebp
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leave
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addl $(STACKSIZE), %esp
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popl %ebp
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ret
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@ -75,9 +75,10 @@ _sha1block:
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* stack offsets
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* void sha1block(uchar *DATA, int LEN, ulong *STATE)
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*/
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#define DATA 8
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#define LEN 12
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#define STATE 16
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#define STACKSIZE (48+80*4)
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#define DATA (STACKSIZE+8)
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#define LEN (STACKSIZE+12)
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#define STATE (STACKSIZE+16)
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/*
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* stack offsets for locals
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@ -89,20 +90,22 @@ _sha1block:
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* ulong a = eax, b = ebx, c = ecx, d = edx, e = esi
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* ulong tmp = edi
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*/
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#define WARRAY (-4-(80*4))
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#define TMP1 (-8-(80*4))
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#define TMP2 (-12-(80*4))
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#define W15 (-16-(80*4))
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#define W40 (-20-(80*4))
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#define W60 (-24-(80*4))
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#define W80 (-28-(80*4))
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#define EDATA (-32-(80*4))
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#define OLDEBX (-36-(80*4))
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#define OLDESI (-40-(80*4))
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#define OLDEDI (-44-(80*4))
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#define WARRAY (STACKSIZE-4-(80*4))
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#define TMP1 (STACKSIZE-8-(80*4))
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#define TMP2 (STACKSIZE-12-(80*4))
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#define W15 (STACKSIZE-16-(80*4))
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#define W40 (STACKSIZE-20-(80*4))
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#define W60 (STACKSIZE-24-(80*4))
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#define W80 (STACKSIZE-28-(80*4))
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#define EDATA (STACKSIZE-32-(80*4))
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#define OLDEBX (STACKSIZE-36-(80*4))
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#define OLDESI (STACKSIZE-40-(80*4))
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#define OLDEDI (STACKSIZE-44-(80*4))
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/* Prelude */
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pushl %ebp
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subl $(STACKSIZE), %esp
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mov %ebx, OLDEBX(%esp)
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mov %esi, OLDESI(%esp)
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mov %edi, OLDEDI(%esp)
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@ -120,7 +123,7 @@ _sha1block:
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leal (WARRAY+80*4)(%esp), %edi /* aw80 */
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movl %edi, W80(%esp)
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mainloop:
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0:
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leal WARRAY(%esp), %ebp /* warray */
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movl STATE(%esp), %edi /* state */
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@ -133,7 +136,7 @@ mainloop:
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movl DATA(%esp), %ebx /* data */
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loop1:
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1:
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BODY0(0,FN1,0x5a827999,%eax,TMP1(%esp),%ecx,%edx,%esi)
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movl %esi,TMP2(%esp)
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BODY0(4,FN1,0x5a827999,%esi,%eax,TMP1(%esp),%ecx,%edx)
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@ -147,7 +150,7 @@ loop1:
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addl $20, %ebx
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addl $20, %ebp
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cmpl W15(%esp), %ebp /* w15 */
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jb loop1
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jb 1b
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BODY0(0,FN1,0x5a827999,%eax,TMP1(%esp),%ecx,%edx,%esi)
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addl $4, %ebx
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@ -161,7 +164,7 @@ loop1:
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addl $20, %ebp
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loop2:
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2:
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BODY(0,FN24,0x6ed9eba1,%eax,%ebx,%ecx,%edx,%esi)
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BODY(4,FN24,0x6ed9eba1,%esi,%eax,%ebx,%ecx,%edx)
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BODY(8,FN24,0x6ed9eba1,%edx,%esi,%eax,%ebx,%ecx)
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@ -170,9 +173,9 @@ loop2:
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addl $20,%ebp
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cmpl W40(%esp), %ebp
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jb loop2
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jb 2b
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loop3:
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3:
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BODY(0,FN3,0x8f1bbcdc,%eax,%ebx,%ecx,%edx,%esi)
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BODY(4,FN3,0x8f1bbcdc,%esi,%eax,%ebx,%ecx,%edx)
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BODY(8,FN3,0x8f1bbcdc,%edx,%esi,%eax,%ebx,%ecx)
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@ -181,9 +184,9 @@ loop3:
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addl $20, %ebp
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cmpl W60(%esp), %ebp /* w60 */
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jb loop3
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jb 3b
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loop4:
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4:
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BODY(0,FN24,0xca62c1d6,%eax,%ebx,%ecx,%edx,%esi)
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BODY(4,FN24,0xca62c1d6,%esi,%eax,%ebx,%ecx,%edx)
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BODY(8,FN24,0xca62c1d6,%edx,%esi,%eax,%ebx,%ecx)
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@ -192,7 +195,7 @@ loop4:
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addl $20, %ebp
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cmpl W80(%esp), %ebp /* w80 */
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jb loop4
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jb 4b
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movl STATE(%esp), %edi /* state */
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addl %eax, 0(%edi)
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@ -203,12 +206,12 @@ loop4:
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movl EDATA(%esp), %edi /* edata */
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cmpl %edi, DATA(%esp) /* data */
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jb mainloop
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jb 0b
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/* Postlude */
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mov OLDEBX(%esp), %ebx
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mov OLDESI(%esp), %esi
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mov OLDEDI(%esp), %edi
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movl %esp, %ebp
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leave
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addl $(STACKSIZE), %esp
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popl %ebp
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ret
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@ -1,22 +0,0 @@
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// could also use windozy InterlockedCompareExchange(p, 1, 0), but why
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int
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tas(long *p)
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{
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int v;
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_asm {
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mov eax, p
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mov ebx, 1
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xchg ebx, [eax]
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mov v, ebx
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}
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switch(v) {
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case 0:
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case 1:
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return v;
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default:
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print("canlock: corrupted 0x%lux\n", v);
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return 1;
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}
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}
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