diff options
| -rw-r--r-- | target/mips/translate.c | 132 |
1 files changed, 131 insertions, 1 deletions
diff --git a/target/mips/translate.c b/target/mips/translate.c index c26ea68..0fd77cd 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -17117,6 +17117,125 @@ static void gen_pool32axf_nanomips_insn(CPUMIPSState *env, DisasContext *ctx) } } + +static void gen_p_lsx(DisasContext *ctx, int rd, int rs, int rt) +{ + TCGv t0, t1; + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + gen_load_gpr(t0, rs); + gen_load_gpr(t1, rt); + + if ((extract32(ctx->opcode, 6, 1)) == 1) { + /* PP.LSXS instructions require shifting */ + switch (extract32(ctx->opcode, 7, 4)) { + case NM_LHXS: + case NM_SHXS: + case NM_LHUXS: + tcg_gen_shli_tl(t0, t0, 1); + break; + case NM_LWXS: + case NM_SWXS: + case NM_LWC1XS: + case NM_SWC1XS: + tcg_gen_shli_tl(t0, t0, 2); + break; + case NM_LDC1XS: + case NM_SDC1XS: + tcg_gen_shli_tl(t0, t0, 3); + break; + } + } + gen_op_addr_add(ctx, t0, t0, t1); + + switch (extract32(ctx->opcode, 7, 4)) { + case NM_LBX: + tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, + MO_SB); + gen_store_gpr(t0, rd); + break; + case NM_LHX: + /*case NM_LHXS:*/ + tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, + MO_TESW); + gen_store_gpr(t0, rd); + break; + case NM_LWX: + /*case NM_LWXS:*/ + tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, + MO_TESL); + gen_store_gpr(t0, rd); + break; + case NM_LBUX: + tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, + MO_UB); + gen_store_gpr(t0, rd); + break; + case NM_LHUX: + /*case NM_LHUXS:*/ + tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, + MO_TEUW); + gen_store_gpr(t0, rd); + break; + case NM_SBX: + gen_load_gpr(t1, rd); + tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx, + MO_8); + break; + case NM_SHX: + /*case NM_SHXS:*/ + gen_load_gpr(t1, rd); + tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx, + MO_TEUW); + break; + case NM_SWX: + /*case NM_SWXS:*/ + gen_load_gpr(t1, rd); + tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx, + MO_TEUL); + break; + case NM_LWC1X: + /*case NM_LWC1XS:*/ + case NM_LDC1X: + /*case NM_LDC1XS:*/ + case NM_SWC1X: + /*case NM_SWC1XS:*/ + case NM_SDC1X: + /*case NM_SDC1XS:*/ + if (ctx->CP0_Config1 & (1 << CP0C1_FP)) { + check_cp1_enabled(ctx); + switch (extract32(ctx->opcode, 7, 4)) { + case NM_LWC1X: + /*case NM_LWC1XS:*/ + gen_flt_ldst(ctx, OPC_LWC1, rd, t0); + break; + case NM_LDC1X: + /*case NM_LDC1XS:*/ + gen_flt_ldst(ctx, OPC_LDC1, rd, t0); + break; + case NM_SWC1X: + /*case NM_SWC1XS:*/ + gen_flt_ldst(ctx, OPC_SWC1, rd, t0); + break; + case NM_SDC1X: + /*case NM_SDC1XS:*/ + gen_flt_ldst(ctx, OPC_SDC1, rd, t0); + break; + } + } else { + generate_exception_err(ctx, EXCP_CpU, 1); + } + break; + default: + generate_exception_end(ctx, EXCP_RI); + break; + } + + tcg_temp_free(t0); + tcg_temp_free(t1); +} + static void gen_pool32f_nanomips_insn(DisasContext *ctx) { int rt, rs, rd; @@ -17420,7 +17539,7 @@ static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx) { uint16_t insn; uint32_t op; - int rt, rs; + int rt, rs, rd; int offset; int imm; @@ -17429,6 +17548,7 @@ static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx) rt = extract32(ctx->opcode, 21, 5); rs = extract32(ctx->opcode, 16, 5); + rd = extract32(ctx->opcode, 11, 5); op = extract32(ctx->opcode, 26, 6); switch (op) { @@ -17488,6 +17608,16 @@ static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx) break; case NM_POOL32A7: switch (extract32(ctx->opcode, 3, 3)) { + case NM_P_LSX: + gen_p_lsx(ctx, rd, rs, rt); + break; + case NM_LSA: + /* In nanoMIPS, the shift field directly encodes the shift + * amount, meaning that the supported shift values are in + * the range 0 to 3 (instead of 1 to 4 in MIPSR6). */ + gen_lsa(ctx, OPC_LSA, rd, rs, rt, + extract32(ctx->opcode, 9, 2) - 1); + break; case NM_POOL32AXF: gen_pool32axf_nanomips_insn(env, ctx); break; |