Цитата(singlskv @ Aug 25 2006, 00:45)
если не сложно, листинг в студию
NAME crc8
RSEG CSTACK:DATA:NOROOT(0)
RSEG RSTACK:DATA:NOROOT(0)
EXTERN ?need_segment_init
PUBWEAK `?<Segment init: TINY_I>`
PUBWEAK `?<Segment init: TINY_Z>`
PUBWEAK __?EEARL
PUBWEAK __?EECR
PUBWEAK __?EEDR
PUBLIC code
PUBLIC crc8_1
PUBLIC crc8_2
PUBLIC main
PUBLIC result
RSEG TINY_I:DATA:NOROOT(0)
REQUIRE `?<Segment init: TINY_I>`
// 49 U8 code[8] = {0x01, 0xd0, 0x5e, 0x3c, 0x0d, 0x00, 0x00, 0x84};
code:
DS 8
REQUIRE `?<Initializer for code>`
// 50
RSEG CODE:CODE:NOROOT(1)
// 51 U8 crc8_1(U8 *buff, U8 num)
crc8_1:
// 52 {
// 53 U8 i, tmp, val, crc = 0;
LDI R19, 0
// 54
// 55 do {
// 56 val = *buff++;
??crc8_1_0:
MOV R30, R16
LD R21, Z+
MOV R16, R30
// 57 i = 8;
LDI R18, 8
// 58 do {
// 59 tmp = (val ^ crc);
??crc8_1_1:
MOV R20, R19
EOR R20, R21
// 60 crc >>= 1;
LSR R19
// 61 val >>= 1;
LSR R21
// 62 if (tmp & 0x01) crc ^= 0x8c;
BST R20, 0
BRTC ??crc8_1_2
LDI R20, 140
EOR R19, R20
// 63 } while (--i);
??crc8_1_2:
DEC R18
BRNE ??crc8_1_1
// 64 } while (--num);
DEC R17
BRNE ??crc8_1_0
// 65 return crc;
MOV R16, R19
RET
// 66 }
// 67
RSEG CODE:CODE:NOROOT(1)
// 68 U8 crc8_2(U8 *buff, U8 num)
crc8_2:
// 69 {
// 70 U8 val, crc = 0;
LDI R18, 0
// 71
// 72 do {
// 73 val = *buff++;
??crc8_2_0:
MOV R30, R16
LD R20, Z+
MOV R16, R30
// 74 val ^= crc;
EOR R20, R18
// 75 crc = 0;
LDI R18, 0
// 76 if(val & 0x01) crc ^= 0x5e;
BST R20, 0
BRTC ??crc8_2_1
LDI R18, 94
// 77 if(val & 0x02) crc ^= 0xbc;
??crc8_2_1:
BST R20, 1
BRTC ??crc8_2_2
LDI R19, 188
EOR R18, R19
// 78 if(val & 0x04) crc ^= 0x61;
??crc8_2_2:
BST R20, 2
BRTC ??crc8_2_3
LDI R19, 97
EOR R18, R19
// 79 if(val & 0x08) crc ^= 0xc2;
??crc8_2_3:
BST R20, 3
BRTC ??crc8_2_4
LDI R19, 194
EOR R18, R19
// 80 if(val & 0x10) crc ^= 0x9d;
??crc8_2_4:
BST R20, 4
BRTC ??crc8_2_5
LDI R19, 157
EOR R18, R19
// 81 if(val & 0x20) crc ^= 0x23;
??crc8_2_5:
BST R20, 5
BRTC ??crc8_2_6
LDI R19, 35
EOR R18, R19
// 82 if(val & 0x40) crc ^= 0x46;
??crc8_2_6:
BST R20, 6
BRTC ??crc8_2_7
LDI R19, 70
EOR R18, R19
// 83 if(val & 0x80) crc ^= 0x8c;
??crc8_2_7:
BST R20, 7
BRTC ??crc8_2_8
LDI R19, 140
EOR R18, R19
// 84 } while (--num);
??crc8_2_8:
DEC R17
BRNE ??crc8_2_0
// 85 return crc;
MOV R16, R18
RET
// 86 }
// 87
RSEG TINY_Z:DATA:NOROOT(0)
REQUIRE `?<Segment init: TINY_Z>`
// 88 volatile U8 result[4];
result:
DS 4
// 89
RSEG CODE:CODE:NOROOT(1)
// 90 void main(void)
main:
??main_0:
// 91 {
// 92 while (1) {
// 93 result[0] = crc8_1(code, 7); //649
LDI R17, 7
LDI R16, code
RCALL crc8_1
LDI R30, result
ST Z, R16
// 94 result[1] = crc8_2(code, 7); //265
LDI R17, 7
LDI R16, code
RCALL crc8_2
LDI R30, result
STD Z+1, R16
// 95 result[2] = crc8_1(code, 7);
LDI R17, 7
LDI R16, code
RCALL crc8_1
LDI R30, result
STD Z+2, R16
// 96 result[3] = crc8_2(code, 7);
LDI R17, 7
LDI R16, code
RCALL crc8_2
LDI R30, result
STD Z+3, R16
RJMP ??main_0
// 97 }
// 98 }
ASEGN ABSOLUTE:DATA:NOROOT,01cH
__?EECR:
ASEGN ABSOLUTE:DATA:NOROOT,01dH
__?EEDR:
ASEGN ABSOLUTE:DATA:NOROOT,01eH
__?EEARL:
RSEG TINY_ID:CODE:NOROOT(0)
`?<Initializer for code>`:
DB 1, 208, 94, 60, 13, 0, 0, 132
RSEG INITTAB:CODE:NOROOT(0)
`?<Segment init: TINY_I>`:
DB SFE(TINY_I) - SFB(TINY_I)
DB SFB(TINY_I)
DW SFB(TINY_ID)
REQUIRE ?need_segment_init
RSEG INITTAB:CODE:NOROOT(0)
`?<Segment init: TINY_Z>`:
DB SFE(TINY_Z) - SFB(TINY_Z)
DB SFB(TINY_Z)
DW 0
REQUIRE ?need_segment_init
END
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