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-rw-r--r--target-mips/translate.c271
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");
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-23 01:34:02 +0000