Revision 6191b059 target-i386/translate.c
| b/target-i386/translate.c | ||
|---|---|---|
| 498 | 498 |
#endif |
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}; |
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| 501 |
static GenOpFunc *gen_op_bsx_T0_cc[3][2] = {
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[0] = {
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gen_op_bsfw_T0_cc, |
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gen_op_bsrw_T0_cc, |
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}, |
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[1] = {
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gen_op_bsfl_T0_cc, |
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gen_op_bsrl_T0_cc, |
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}, |
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#ifdef TARGET_X86_64 |
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[2] = {
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gen_op_bsfq_T0_cc, |
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gen_op_bsrq_T0_cc, |
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}, |
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#endif |
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}; |
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static inline void gen_op_lds_T0_A0(int idx) |
| 519 | 502 |
{
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int mem_index = (idx >> 2) - 1; |
| ... | ... | |
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break; |
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case 0x1bc: /* bsf */ |
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case 0x1bd: /* bsr */ |
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ot = dflag + OT_WORD; |
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modrm = ldub_code(s->pc++); |
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reg = ((modrm >> 3) & 7) | rex_r; |
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gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0); |
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/* NOTE: in order to handle the 0 case, we must load the |
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result. It could be optimized with a generated jump */ |
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gen_op_mov_TN_reg(ot, 1, reg); |
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gen_op_bsx_T0_cc[ot - OT_WORD][b & 1](); |
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gen_op_mov_reg_T1(ot, reg); |
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s->cc_op = CC_OP_LOGICB + ot; |
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{
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int label1; |
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ot = dflag + OT_WORD; |
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modrm = ldub_code(s->pc++); |
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reg = ((modrm >> 3) & 7) | rex_r; |
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gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0); |
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gen_extu(ot, cpu_T[0]); |
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label1 = gen_new_label(); |
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tcg_gen_movi_tl(cpu_cc_dst, 0); |
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tcg_gen_brcond_tl(TCG_COND_EQ, cpu_T[0], tcg_const_tl(0), label1); |
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if (b & 1) {
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tcg_gen_helper_1_1(helper_bsr, cpu_T[0], cpu_T[0]); |
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} else {
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tcg_gen_helper_1_1(helper_bsf, cpu_T[0], cpu_T[0]); |
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} |
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gen_op_mov_reg_T0(ot, reg); |
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tcg_gen_movi_tl(cpu_cc_dst, 1); |
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gen_set_label(label1); |
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tcg_gen_discard_tl(cpu_cc_src); |
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s->cc_op = CC_OP_LOGICB + ot; |
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} |
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break; |
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/************************/ |
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/* bcd */ |
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