ref: 774d1d233e7803e769add45a4df1ae4b86f41b10
dir: /posix-386/sha1block.spp/
.text .p2align 2,0x90 #ifdef __APPLE__ .globl __sha1block __sha1block: #else .globl _sha1block _sha1block: #endif /* x = (wp[off-f] ^ wp[off-8] ^ wp[off-14] ^ wp[off-16]) <<< 1; * wp[off] = x; * x += A <<< 5; * E += 0xca62c1d6 + x; * x = FN(B,C,D); * E += x; * B >>> 2 */ #define BSWAPDI BYTE $0x0f; BYTE $0xcf; #define BODY(off,FN,V,A,B,C,D,E)\ movl (off-64)(%ebp), %edi;\ xorl (off-56)(%ebp), %edi;\ xorl (off-32)(%ebp), %edi;\ xorl (off-12)(%ebp), %edi;\ roll $1, %edi;\ movl %edi, off(%ebp);\ leal V(%edi, E, 1), E;\ movl A, %edi;\ roll $5, %edi;\ addl %edi, E;\ FN(B,C,D)\ addl %edi, E;\ rorl $2, B;\ #define BODY0(off,FN,V,A,B,C,D,E)\ movl off(%ebx), %edi;\ bswap %edi;\ movl %edi, off(%ebp);\ leal V(%edi,E,1), E;\ movl A, %edi;\ roll $5,%edi;\ addl %edi,E;\ FN(B,C,D)\ addl %edi,E;\ rorl $2,B;\ /* * fn1 = (((C^D)&B)^D); */ #define FN1(B,C,D)\ movl C, %edi;\ xorl D, %edi;\ andl B, %edi;\ xorl D, %edi;\ /* * fn24 = B ^ C ^ D */ #define FN24(B,C,D)\ movl B, %edi;\ xorl C, %edi;\ xorl D, %edi;\ /* * fn3 = ((B ^ C) & (D ^= B)) ^ B * D ^= B to restore D */ #define FN3(B,C,D)\ movl B, %edi;\ xorl C, %edi;\ xorl B, D;\ andl D, %edi;\ xorl B, %edi;\ xorl B, D;\ /* * stack offsets * void sha1block(uchar *DATA, int LEN, ulong *STATE) */ #define STACKSIZE (48+80*4) #define DATA (STACKSIZE+8) #define LEN (STACKSIZE+12) #define STATE (STACKSIZE+16) /* * stack offsets for locals * ulong w[80]; * uchar *edata; * ulong *w15, *w40, *w60, *w80; * register local * ulong *wp = %ebp * ulong a = eax, b = ebx, c = ecx, d = edx, e = esi * ulong tmp = edi */ #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) movl DATA(%esp), %eax addl LEN(%esp), %eax movl %eax, EDATA(%esp) leal (WARRAY+15*4)(%esp), %edi /* aw15 */ movl %edi, W15(%esp) leal (WARRAY+40*4)(%esp), %edx /* aw40 */ movl %edx, W40(%esp) leal (WARRAY+60*4)(%esp), %ecx /* aw60 */ movl %ecx, W60(%esp) leal (WARRAY+80*4)(%esp), %edi /* aw80 */ movl %edi, W80(%esp) 0: leal WARRAY(%esp), %ebp /* warray */ movl STATE(%esp), %edi /* state */ movl (%edi),%eax movl 4(%edi),%ebx movl %ebx, TMP1(%esp) /* tmp1 */ movl 8(%edi), %ecx movl 12(%edi), %edx movl 16(%edi), %esi movl DATA(%esp), %ebx /* data */ 1: BODY0(0,FN1,0x5a827999,%eax,TMP1(%esp),%ecx,%edx,%esi) movl %esi,TMP2(%esp) BODY0(4,FN1,0x5a827999,%esi,%eax,TMP1(%esp),%ecx,%edx) movl TMP1(%esp),%esi BODY0(8,FN1,0x5a827999,%edx,TMP2(%esp),%eax,%esi,%ecx) BODY0(12,FN1,0x5a827999,%ecx,%edx,TMP2(%esp),%eax,%esi) movl %esi,TMP1(%esp) BODY0(16,FN1,0x5a827999,%esi,%ecx,%edx,TMP2(%esp),%eax) movl TMP2(%esp),%esi addl $20, %ebx addl $20, %ebp cmpl W15(%esp), %ebp /* w15 */ jb 1b BODY0(0,FN1,0x5a827999,%eax,TMP1(%esp),%ecx,%edx,%esi) addl $4, %ebx MOVL %ebx, DATA(%esp) /* data */ MOVL TMP1(%esp),%ebx BODY(4,FN1,0x5a827999,%esi,%eax,%ebx,%ecx,%edx) BODY(8,FN1,0x5a827999,%edx,%esi,%eax,%ebx,%ecx) BODY(12,FN1,0x5a827999,%ecx,%edx,%esi,%eax,%ebx) BODY(16,FN1,0x5a827999,%ebx,%ecx,%edx,%esi,%eax) addl $20, %ebp 2: BODY(0,FN24,0x6ed9eba1,%eax,%ebx,%ecx,%edx,%esi) BODY(4,FN24,0x6ed9eba1,%esi,%eax,%ebx,%ecx,%edx) BODY(8,FN24,0x6ed9eba1,%edx,%esi,%eax,%ebx,%ecx) BODY(12,FN24,0x6ed9eba1,%ecx,%edx,%esi,%eax,%ebx) BODY(16,FN24,0x6ed9eba1,%ebx,%ecx,%edx,%esi,%eax) addl $20,%ebp cmpl W40(%esp), %ebp jb 2b 3: BODY(0,FN3,0x8f1bbcdc,%eax,%ebx,%ecx,%edx,%esi) BODY(4,FN3,0x8f1bbcdc,%esi,%eax,%ebx,%ecx,%edx) BODY(8,FN3,0x8f1bbcdc,%edx,%esi,%eax,%ebx,%ecx) BODY(12,FN3,0x8f1bbcdc,%ecx,%edx,%esi,%eax,%ebx) BODY(16,FN3,0x8f1bbcdc,%ebx,%ecx,%edx,%esi,%eax) addl $20, %ebp cmpl W60(%esp), %ebp /* w60 */ jb 3b 4: BODY(0,FN24,0xca62c1d6,%eax,%ebx,%ecx,%edx,%esi) BODY(4,FN24,0xca62c1d6,%esi,%eax,%ebx,%ecx,%edx) BODY(8,FN24,0xca62c1d6,%edx,%esi,%eax,%ebx,%ecx) BODY(12,FN24,0xca62c1d6,%ecx,%edx,%esi,%eax,%ebx) BODY(16,FN24,0xca62c1d6,%ebx,%ecx,%edx,%esi,%eax) addl $20, %ebp cmpl W80(%esp), %ebp /* w80 */ jb 4b movl STATE(%esp), %edi /* state */ addl %eax, 0(%edi) addl %ebx, 4(%edi) addl %ecx, 8(%edi) addl %edx, 12(%edi) addl %esi, 16(%edi) movl EDATA(%esp), %edi /* edata */ cmpl %edi, DATA(%esp) /* data */ jb 0b /* Postlude */ mov OLDEBX(%esp), %ebx mov OLDESI(%esp), %esi mov OLDEDI(%esp), %edi addl $(STACKSIZE), %esp popl %ebp ret