Mercurial > repos > blastem
diff gen_x86.c @ 207:c82f65a87a53
Fix overflow flag on ASL
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Fri, 25 Jan 2013 18:39:22 -0800 |
| parents | 811163790e6c |
| children | d9bf8e61c33c |
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--- a/gen_x86.c Wed Jan 23 21:54:58 2013 -0800 +++ b/gen_x86.c Fri Jan 25 18:39:22 2013 -0800 @@ -35,6 +35,7 @@ #define OP_MOV_IEA 0xC6 #define OP_SHIFTROT_1 0xD0 #define OP_SHIFTROT_CL 0xD2 +#define OP_LOOP 0xE2 #define OP_CALL 0xE8 #define OP_JMP 0xE9 #define OP_JMP_BYTE 0xEB @@ -1533,4 +1534,10 @@ return out; } - +uint8_t * loop(uint8_t * out, uint8_t * dst) +{ + ptrdiff_t disp = dst-(out+2); + *(out++) = OP_LOOP; + *(out++) = disp; + return out; +}