-#define emith_test_t() { \
- if (reg_map_g2h[SHR_SR] == -1) { \
- EMIT_OP_MODRM(0xf6, 1, 0, 5); \
- EMIT(SHR_SR * 4, u8); \
- EMIT(0x01, u8); /* test [ebp+SHR_SR], byte 1 */ \
- } else { \
- EMIT_OP_MODRM(0xf7, 3, 0, reg_map_g2h[SHR_SR]); \
- EMIT(0x01, u16); /* test <reg>, word 1 */ \
+#define emith_bic_r_imm_c(cond, r, imm) { \
+ (void)(cond); \
+ emith_bic_r_imm(r, imm); \
+}
+
+// shift
+#define emith_shift(op, d, s, cnt) { \
+ if (d != s) \
+ emith_move_r_r(d, s); \
+ EMIT_OP_MODRM(0xc1, 3, op, d); \
+ EMIT(cnt, u8); \
+}
+
+#define emith_lsl(d, s, cnt) \
+ emith_shift(4, d, s, cnt)
+
+#define emith_lsr(d, s, cnt) \
+ emith_shift(5, d, s, cnt)
+
+#define emith_asr(d, s, cnt) \
+ emith_shift(7, d, s, cnt)
+
+#define emith_rol(d, s, cnt) \
+ emith_shift(0, d, s, cnt)
+
+#define emith_ror(d, s, cnt) \
+ emith_shift(1, d, s, cnt)
+
+#define emith_rolc(r) \
+ EMIT_OP_MODRM(0xd1, 3, 2, r)
+
+#define emith_rorc(r) \
+ EMIT_OP_MODRM(0xd1, 3, 3, r)
+
+// misc
+#define emith_push(r) \
+ EMIT_OP(0x50 + (r))
+
+#define emith_pop(r) \
+ EMIT_OP(0x58 + (r))
+
+#define emith_neg_r(r) \
+ EMIT_OP_MODRM(0xf7, 3, 3, r)
+
+#define emith_clear_msb(d, s, count) { \
+ u32 t = (u32)-1; \
+ t >>= count; \
+ if (d != s) \
+ emith_move_r_r(d, s); \
+ emith_and_r_imm(d, t); \
+}
+
+#define emith_sext(d, s, bits) { \
+ emith_lsl(d, s, 32 - (bits)); \
+ emith_asr(d, d, 32 - (bits)); \
+}
+
+// put bit0 of r0 to carry
+#define emith_set_carry(r0) { \
+ emith_tst_r_imm(r0, 1); /* clears C */ \
+ EMITH_SJMP_START(DCOND_EQ); \
+ EMIT_OP(0xf9); /* STC */ \
+ EMITH_SJMP_END(DCOND_EQ); \
+}
+
+// put bit0 of r0 to carry (for subtraction)
+#define emith_set_carry_sub emith_set_carry
+
+// XXX: stupid mess
+#define emith_mul_(op, dlo, dhi, s1, s2) { \
+ int rmr; \
+ if (dlo != xAX && dhi != xAX) \
+ emith_push(xAX); \
+ if (dlo != xDX && dhi != xDX) \
+ emith_push(xDX); \
+ if ((s1) == xAX) \
+ rmr = s2; \
+ else if ((s2) == xAX) \
+ rmr = s1; \
+ else { \
+ emith_move_r_r(xAX, s1); \
+ rmr = s2; \