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comparison m68k_to_x86.c @ 209:922b59c09259

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Flag fixes for div, negx and not
author Mike Pavone <pavone@retrodev.com>
date Sat, 26 Jan 2013 02:47:26 -0800
parents 3457dc6fd558
children 4beaad3a9a50
comparison
equal deleted inserted replaced
208:3457dc6fd558 209:922b59c09259
3124 } else { 3124 } else {
3125 dst = mov_rrdisp8(dst, RDX, dst_op.base, dst_op.disp, SZ_W); 3125 dst = mov_rrdisp8(dst, RDX, dst_op.base, dst_op.disp, SZ_W);
3126 dst = shl_irdisp8(dst, 16, dst_op.base, dst_op.disp, SZ_D); 3126 dst = shl_irdisp8(dst, 16, dst_op.base, dst_op.disp, SZ_D);
3127 dst = mov_rrdisp8(dst, RAX, dst_op.base, dst_op.disp, SZ_W); 3127 dst = mov_rrdisp8(dst, RAX, dst_op.base, dst_op.disp, SZ_W);
3128 } 3128 }
3129 dst = cmp_ir(dst, 0, RAX, SZ_W);
3129 dst = pop_r(dst, RAX); 3130 dst = pop_r(dst, RAX);
3130 dst = pop_r(dst, RDX); 3131 dst = pop_r(dst, RDX);
3131 dst = mov_ir(dst, 0, FLAG_V, SZ_B); 3132 dst = mov_ir(dst, 0, FLAG_V, SZ_B);
3132 dst = cmp_ir(dst, 0, RAX, SZ_W);
3133 dst = setcc_r(dst, CC_Z, FLAG_Z); 3133 dst = setcc_r(dst, CC_Z, FLAG_Z);
3134 dst = setcc_r(dst, CC_S, FLAG_N); 3134 dst = setcc_r(dst, CC_S, FLAG_N);
3135 end_off = dst+1; 3135 end_off = dst+1;
3136 dst = jmp(dst, dst+2); 3136 dst = jmp(dst, dst+2);
3137 *norm_off = dst - (norm_off + 1); 3137 *norm_off = dst - (norm_off + 1);
3362 dst = bt_irdisp8(dst, 0, CONTEXT, 0, SZ_B); 3362 dst = bt_irdisp8(dst, 0, CONTEXT, 0, SZ_B);
3363 dst = sbb_rdisp8r(dst, dst_op.base, dst_op.disp, SCRATCH1, inst->extra.size); 3363 dst = sbb_rdisp8r(dst, dst_op.base, dst_op.disp, SCRATCH1, inst->extra.size);
3364 dst = mov_rrdisp8(dst, SCRATCH1, dst_op.base, dst_op.disp, inst->extra.size); 3364 dst = mov_rrdisp8(dst, SCRATCH1, dst_op.base, dst_op.disp, inst->extra.size);
3365 } 3365 }
3366 dst = setcc_r(dst, CC_C, FLAG_C); 3366 dst = setcc_r(dst, CC_C, FLAG_C);
3367 dst = jcc(dst, CC_NZ, dst+4); 3367 dst = jcc(dst, CC_Z, dst+4);
3368 dst = mov_ir(dst, 1, FLAG_Z, SZ_B); 3368 dst = mov_ir(dst, 0, FLAG_Z, SZ_B);
3369 dst = setcc_r(dst, CC_S, FLAG_N); 3369 dst = setcc_r(dst, CC_S, FLAG_N);
3370 dst = setcc_r(dst, CC_O, FLAG_V); 3370 dst = setcc_r(dst, CC_O, FLAG_V);
3371 dst = mov_rrind(dst, FLAG_C, CONTEXT, SZ_B); 3371 dst = mov_rrind(dst, FLAG_C, CONTEXT, SZ_B);
3372 dst = m68k_save_result(inst, dst, opts); 3372 dst = m68k_save_result(inst, dst, opts);
3373 break; 3373 break;
3376 dst = cycles(dst, BUS); 3376 dst = cycles(dst, BUS);
3377 break; 3377 break;
3378 case M68K_NOT: 3378 case M68K_NOT:
3379 if (dst_op.mode == MODE_REG_DIRECT) { 3379 if (dst_op.mode == MODE_REG_DIRECT) {
3380 dst = not_r(dst, dst_op.base, inst->extra.size); 3380 dst = not_r(dst, dst_op.base, inst->extra.size);
3381 dst = cmp_ir(dst, 0, dst_op.base, inst->extra.size);
3381 } else { 3382 } else {
3382 dst = not_rdisp8(dst, dst_op.base, dst_op.disp, inst->extra.size); 3383 dst = not_rdisp8(dst, dst_op.base, dst_op.disp, inst->extra.size);
3383 } 3384 dst = cmp_irdisp8(dst, 0, dst_op.base, dst_op.disp, inst->extra.size);
3385 }
3386
3384 dst = mov_ir(dst, 0, FLAG_C, SZ_B); 3387 dst = mov_ir(dst, 0, FLAG_C, SZ_B);
3385 dst = setcc_r(dst, CC_Z, FLAG_Z); 3388 dst = setcc_r(dst, CC_Z, FLAG_Z);
3386 dst = setcc_r(dst, CC_S, FLAG_N); 3389 dst = setcc_r(dst, CC_S, FLAG_N);
3387 dst = mov_ir(dst, 0, FLAG_V, SZ_B); 3390 dst = mov_ir(dst, 0, FLAG_V, SZ_B);
3388 dst = m68k_save_result(inst, dst, opts); 3391 dst = m68k_save_result(inst, dst, opts);