diff options
Diffstat (limited to 'target-xtensa/translate.c')
| -rw-r--r-- | target-xtensa/translate.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index 358ea96056..9a19ca80e1 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -167,6 +167,40 @@ static void gen_brcondi(DisasContext *dc, TCGCond cond, tcg_temp_free(tmp); } +static void gen_rsr(DisasContext *dc, TCGv_i32 d, uint32_t sr) +{ + static void (* const rsr_handler[256])(DisasContext *dc, + TCGv_i32 d, uint32_t sr) = { + }; + + if (sregnames[sr]) { + if (rsr_handler[sr]) { + rsr_handler[sr](dc, d, sr); + } else { + tcg_gen_mov_i32(d, cpu_SR[sr]); + } + } else { + qemu_log("RSR %d not implemented, ", sr); + } +} + +static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s) +{ + static void (* const wsr_handler[256])(DisasContext *dc, + uint32_t sr, TCGv_i32 v) = { + }; + + if (sregnames[sr]) { + if (wsr_handler[sr]) { + wsr_handler[sr](dc, sr, s); + } else { + tcg_gen_mov_i32(cpu_SR[sr], s); + } + } else { + qemu_log("WSR %d not implemented, ", sr); + } +} + static void disas_xtensa_insn(DisasContext *dc) { #define HAS_OPTION(opt) do { \ @@ -415,6 +449,133 @@ static void disas_xtensa_insn(DisasContext *dc) break; case 3: /*RST3*/ + switch (OP2) { + case 0: /*RSR*/ + gen_rsr(dc, cpu_R[RRR_T], RSR_SR); + break; + + case 1: /*WSR*/ + gen_wsr(dc, RSR_SR, cpu_R[RRR_T]); + break; + + case 2: /*SEXTu*/ + HAS_OPTION(XTENSA_OPTION_MISC_OP); + { + int shift = 24 - RRR_T; + + if (shift == 24) { + tcg_gen_ext8s_i32(cpu_R[RRR_R], cpu_R[RRR_S]); + } else if (shift == 16) { + tcg_gen_ext16s_i32(cpu_R[RRR_R], cpu_R[RRR_S]); + } else { + TCGv_i32 tmp = tcg_temp_new_i32(); + tcg_gen_shli_i32(tmp, cpu_R[RRR_S], shift); + tcg_gen_sari_i32(cpu_R[RRR_R], tmp, shift); + tcg_temp_free(tmp); + } + } + break; + + case 3: /*CLAMPSu*/ + HAS_OPTION(XTENSA_OPTION_MISC_OP); + { + TCGv_i32 tmp1 = tcg_temp_new_i32(); + TCGv_i32 tmp2 = tcg_temp_new_i32(); + int label = gen_new_label(); + + tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 24 - RRR_T); + tcg_gen_xor_i32(tmp2, tmp1, cpu_R[RRR_S]); + tcg_gen_andi_i32(tmp2, tmp2, 0xffffffff << (RRR_T + 7)); + tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp2, 0, label); + + tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 31); + tcg_gen_xori_i32(cpu_R[RRR_R], tmp1, + 0xffffffff >> (25 - RRR_T)); + + gen_set_label(label); + + tcg_temp_free(tmp1); + tcg_temp_free(tmp2); + } + break; + + case 4: /*MINu*/ + case 5: /*MAXu*/ + case 6: /*MINUu*/ + case 7: /*MAXUu*/ + HAS_OPTION(XTENSA_OPTION_MISC_OP); + { + static const TCGCond cond[] = { + TCG_COND_LE, + TCG_COND_GE, + TCG_COND_LEU, + TCG_COND_GEU + }; + int label = gen_new_label(); + + if (RRR_R != RRR_T) { + tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]); + tcg_gen_brcond_i32(cond[OP2 - 4], + cpu_R[RRR_S], cpu_R[RRR_T], label); + tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_T]); + } else { + tcg_gen_brcond_i32(cond[OP2 - 4], + cpu_R[RRR_T], cpu_R[RRR_S], label); + tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]); + } + gen_set_label(label); + } + break; + + case 8: /*MOVEQZ*/ + case 9: /*MOVNEZ*/ + case 10: /*MOVLTZ*/ + case 11: /*MOVGEZ*/ + { + static const TCGCond cond[] = { + TCG_COND_NE, + TCG_COND_EQ, + TCG_COND_GE, + TCG_COND_LT + }; + int label = gen_new_label(); + tcg_gen_brcondi_i32(cond[OP2 - 8], cpu_R[RRR_T], 0, label); + tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]); + gen_set_label(label); + } + break; + + case 12: /*MOVFp*/ + HAS_OPTION(XTENSA_OPTION_BOOLEAN); + break; + + case 13: /*MOVTp*/ + HAS_OPTION(XTENSA_OPTION_BOOLEAN); + break; + + case 14: /*RUR*/ + { + int st = (RRR_S << 4) + RRR_T; + if (uregnames[st]) { + tcg_gen_mov_i32(cpu_R[RRR_R], cpu_UR[st]); + } else { + qemu_log("RUR %d not implemented, ", st); + } + } + break; + + case 15: /*WUR*/ + { + if (uregnames[RSR_SR]) { + tcg_gen_mov_i32(cpu_UR[RSR_SR], cpu_R[RRR_T]); + } else { + qemu_log("WUR %d not implemented, ", RSR_SR); + } + } + break; + + } break; case 4: /*EXTUI*/ |