diff options
Diffstat (limited to 'target-mips/translate.c')
| -rw-r--r-- | target-mips/translate.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c index 0ab23d3640..7168273381 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -267,6 +267,19 @@ enum { OPC_MUL = 0x02 | OPC_SPECIAL2, OPC_MSUB = 0x04 | OPC_SPECIAL2, OPC_MSUBU = 0x05 | OPC_SPECIAL2, + /* Loongson 2F */ + OPC_MULT_G_2F = 0x10 | OPC_SPECIAL2, + OPC_DMULT_G_2F = 0x11 | OPC_SPECIAL2, + OPC_MULTU_G_2F = 0x12 | OPC_SPECIAL2, + OPC_DMULTU_G_2F = 0x13 | OPC_SPECIAL2, + OPC_DIV_G_2F = 0x14 | OPC_SPECIAL2, + OPC_DDIV_G_2F = 0x15 | OPC_SPECIAL2, + OPC_DIVU_G_2F = 0x16 | OPC_SPECIAL2, + OPC_DDIVU_G_2F = 0x17 | OPC_SPECIAL2, + OPC_MOD_G_2F = 0x1c | OPC_SPECIAL2, + OPC_DMOD_G_2F = 0x1d | OPC_SPECIAL2, + OPC_MODU_G_2F = 0x1e | OPC_SPECIAL2, + OPC_DMODU_G_2F = 0x1f | OPC_SPECIAL2, /* Misc */ OPC_CLZ = 0x20 | OPC_SPECIAL2, OPC_CLO = 0x21 | OPC_SPECIAL2, @@ -293,6 +306,20 @@ enum { OPC_BSHFL = 0x20 | OPC_SPECIAL3, OPC_DBSHFL = 0x24 | OPC_SPECIAL3, OPC_RDHWR = 0x3B | OPC_SPECIAL3, + + /* Loongson 2E */ + OPC_MULT_G_2E = 0x18 | OPC_SPECIAL3, + OPC_MULTU_G_2E = 0x19 | OPC_SPECIAL3, + OPC_DIV_G_2E = 0x1A | OPC_SPECIAL3, + OPC_DIVU_G_2E = 0x1B | OPC_SPECIAL3, + OPC_DMULT_G_2E = 0x1C | OPC_SPECIAL3, + OPC_DMULTU_G_2E = 0x1D | OPC_SPECIAL3, + OPC_DDIV_G_2E = 0x1E | OPC_SPECIAL3, + OPC_DDIVU_G_2E = 0x1F | OPC_SPECIAL3, + OPC_MOD_G_2E = 0x22 | OPC_SPECIAL3, + OPC_MODU_G_2E = 0x23 | OPC_SPECIAL3, + OPC_DMOD_G_2E = 0x26 | OPC_SPECIAL3, + OPC_DMODU_G_2E = 0x27 | OPC_SPECIAL3, }; /* BSHFL opcodes */ @@ -2325,6 +2352,220 @@ static void gen_cl (DisasContext *ctx, uint32_t opc, tcg_temp_free(t0); } +/* Godson integer instructions */ +static void gen_loongson_integer (DisasContext *ctx, uint32_t opc, + int rd, int rs, int rt) +{ + const char *opn = "loongson"; + TCGv t0, t1; + + if (rd == 0) { + /* Treat as NOP. */ + MIPS_DEBUG("NOP"); + return; + } + + switch (opc) { + case OPC_MULT_G_2E: + case OPC_MULT_G_2F: + case OPC_MULTU_G_2E: + case OPC_MULTU_G_2F: +#if defined(TARGET_MIPS64) + case OPC_DMULT_G_2E: + case OPC_DMULT_G_2F: + case OPC_DMULTU_G_2E: + case OPC_DMULTU_G_2F: +#endif + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + break; + default: + t0 = tcg_temp_local_new(); + t1 = tcg_temp_local_new(); + break; + } + + gen_load_gpr(t0, rs); + gen_load_gpr(t1, rt); + + switch (opc) { + case OPC_MULT_G_2E: + case OPC_MULT_G_2F: + tcg_gen_mul_tl(cpu_gpr[rd], t0, t1); + tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]); + opn = "mult.g"; + break; + case OPC_MULTU_G_2E: + case OPC_MULTU_G_2F: + tcg_gen_ext32u_tl(t0, t0); + tcg_gen_ext32u_tl(t1, t1); + tcg_gen_mul_tl(cpu_gpr[rd], t0, t1); + tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]); + opn = "multu.g"; + break; + case OPC_DIV_G_2E: + case OPC_DIV_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + int l3 = gen_new_label(); + tcg_gen_ext32s_tl(t0, t0); + tcg_gen_ext32s_tl(t1, t1); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l3); + gen_set_label(l1); + tcg_gen_brcondi_tl(TCG_COND_NE, t0, INT_MIN, l2); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, -1, l2); + tcg_gen_mov_tl(cpu_gpr[rd], t0); + tcg_gen_br(l3); + gen_set_label(l2); + tcg_gen_div_tl(cpu_gpr[rd], t0, t1); + tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]); + gen_set_label(l3); + } + opn = "div.g"; + break; + case OPC_DIVU_G_2E: + case OPC_DIVU_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + tcg_gen_ext32u_tl(t0, t0); + tcg_gen_ext32u_tl(t1, t1); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l2); + gen_set_label(l1); + tcg_gen_divu_tl(cpu_gpr[rd], t0, t1); + tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]); + gen_set_label(l2); + } + opn = "divu.g"; + break; + case OPC_MOD_G_2E: + case OPC_MOD_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + int l3 = gen_new_label(); + tcg_gen_ext32u_tl(t0, t0); + tcg_gen_ext32u_tl(t1, t1); + tcg_gen_brcondi_tl(TCG_COND_EQ, t1, 0, l1); + tcg_gen_brcondi_tl(TCG_COND_NE, t0, INT_MIN, l2); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, -1, l2); + gen_set_label(l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l3); + gen_set_label(l2); + tcg_gen_rem_tl(cpu_gpr[rd], t0, t1); + tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]); + gen_set_label(l3); + } + opn = "mod.g"; + break; + case OPC_MODU_G_2E: + case OPC_MODU_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + tcg_gen_ext32u_tl(t0, t0); + tcg_gen_ext32u_tl(t1, t1); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l2); + gen_set_label(l1); + tcg_gen_remu_tl(cpu_gpr[rd], t0, t1); + tcg_gen_ext32s_tl(cpu_gpr[rd], cpu_gpr[rd]); + gen_set_label(l2); + } + opn = "modu.g"; + break; +#if defined(TARGET_MIPS64) + case OPC_DMULT_G_2E: + case OPC_DMULT_G_2F: + tcg_gen_mul_tl(cpu_gpr[rd], t0, t1); + opn = "dmult.g"; + break; + case OPC_DMULTU_G_2E: + case OPC_DMULTU_G_2F: + tcg_gen_mul_tl(cpu_gpr[rd], t0, t1); + opn = "dmultu.g"; + break; + case OPC_DDIV_G_2E: + case OPC_DDIV_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + int l3 = gen_new_label(); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l3); + gen_set_label(l1); + tcg_gen_brcondi_tl(TCG_COND_NE, t0, -1LL << 63, l2); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, -1LL, l2); + tcg_gen_mov_tl(cpu_gpr[rd], t0); + tcg_gen_br(l3); + gen_set_label(l2); + tcg_gen_div_tl(cpu_gpr[rd], t0, t1); + gen_set_label(l3); + } + opn = "ddiv.g"; + break; + case OPC_DDIVU_G_2E: + case OPC_DDIVU_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l2); + gen_set_label(l1); + tcg_gen_divu_tl(cpu_gpr[rd], t0, t1); + gen_set_label(l2); + } + opn = "ddivu.g"; + break; + case OPC_DMOD_G_2E: + case OPC_DMOD_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + int l3 = gen_new_label(); + tcg_gen_brcondi_tl(TCG_COND_EQ, t1, 0, l1); + tcg_gen_brcondi_tl(TCG_COND_NE, t0, -1LL << 63, l2); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, -1LL, l2); + gen_set_label(l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l3); + gen_set_label(l2); + tcg_gen_rem_tl(cpu_gpr[rd], t0, t1); + gen_set_label(l3); + } + opn = "dmod.g"; + break; + case OPC_DMODU_G_2E: + case OPC_DMODU_G_2F: + { + int l1 = gen_new_label(); + int l2 = gen_new_label(); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + tcg_gen_movi_tl(cpu_gpr[rd], 0); + tcg_gen_br(l2); + gen_set_label(l1); + tcg_gen_remu_tl(cpu_gpr[rd], t0, t1); + gen_set_label(l2); + } + opn = "dmodu.g"; + break; +#endif + } + + MIPS_DEBUG("%s %s, %s", opn, regnames[rd], regnames[rs]); + tcg_temp_free(t0); + tcg_temp_free(t1); +} + /* Traps */ static void gen_trap (DisasContext *ctx, uint32_t opc, int rs, int rt, int16_t imm) @@ -11596,6 +11837,15 @@ static void decode_opc (CPUState *env, DisasContext *ctx, int *is_branch) } /* Treat as NOP. */ break; + case OPC_DIV_G_2F: + case OPC_DIVU_G_2F: + case OPC_MULT_G_2F: + case OPC_MULTU_G_2F: + case OPC_MOD_G_2F: + case OPC_MODU_G_2F: + check_insn(env, ctx, INSN_LOONGSON2F); + gen_loongson_integer(ctx, op1, rd, rs, rt); + break; #if defined(TARGET_MIPS64) case OPC_DCLO: case OPC_DCLZ: @@ -11603,6 +11853,15 @@ static void decode_opc (CPUState *env, DisasContext *ctx, int *is_branch) check_mips_64(ctx); gen_cl(ctx, op1, rd, rs); break; + case OPC_DMULT_G_2F: + case OPC_DMULTU_G_2F: + case OPC_DDIV_G_2F: + case OPC_DDIVU_G_2F: + case OPC_DMOD_G_2F: + case OPC_DMODU_G_2F: + check_insn(env, ctx, INSN_LOONGSON2F); + gen_loongson_integer(ctx, op1, rd, rs, rt); + break; #endif default: /* Invalid */ MIPS_INVAL("special2"); @@ -11651,6 +11910,12 @@ static void decode_opc (CPUState *env, DisasContext *ctx, int *is_branch) tcg_temp_free(t0); } break; + case OPC_DIV_G_2E ... OPC_DIVU_G_2E: + case OPC_MULT_G_2E ... OPC_MULTU_G_2E: + case OPC_MOD_G_2E ... OPC_MODU_G_2E: + check_insn(env, ctx, INSN_LOONGSON2E); + gen_loongson_integer(ctx, op1, rd, rs, rt); + break; #if defined(TARGET_MIPS64) case OPC_DEXTM ... OPC_DEXT: case OPC_DINSM ... OPC_DINS: @@ -11664,6 +11929,12 @@ static void decode_opc (CPUState *env, DisasContext *ctx, int *is_branch) op2 = MASK_DBSHFL(ctx->opcode); gen_bshfl(ctx, op2, rt, rd); break; + case OPC_DDIV_G_2E ... OPC_DDIVU_G_2E: + case OPC_DMULT_G_2E ... OPC_DMULTU_G_2E: + case OPC_DMOD_G_2E ... OPC_DMODU_G_2E: + check_insn(env, ctx, INSN_LOONGSON2E); + gen_loongson_integer(ctx, op1, rd, rs, rt); + break; #endif default: /* Invalid */ MIPS_INVAL("special3"); |