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target-mips: Add ASE DSP load instructions 

Add MIPS ASE DSP Load instructions.

Signed-off-by: Jia Liu <proljc@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Jia Liu 2012-10-24 22:17:05 +08:00 committed by Aurelien Jarno
parent e45a93e259
commit 9b1a1d68d0
1 changed files with 88 additions and 0 deletions
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88
target-mips/translate.c
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@ -313,6 +313,9 @@ enum {
OPC_MODU_G_2E = 0x23 | OPC_SPECIAL3,
OPC_DMOD_G_2E = 0x26 | OPC_SPECIAL3,
OPC_DMODU_G_2E = 0x27 | OPC_SPECIAL3,
/* MIPS DSP Load */
OPC_LX_DSP = 0x0A | OPC_SPECIAL3,
};
/* BSHFL opcodes */
@ -340,6 +343,17 @@ enum {
#endif
};
#define MASK_LX(op) (MASK_SPECIAL3(op) | (op & (0x1F << 6)))
/* MIPS DSP Load */
enum {
OPC_LBUX = (0x06 << 6) | OPC_LX_DSP,
OPC_LHX = (0x04 << 6) | OPC_LX_DSP,
OPC_LWX = (0x00 << 6) | OPC_LX_DSP,
#if defined(TARGET_MIPS64)
OPC_LDX = (0x08 << 6) | OPC_LX_DSP,
#endif
};
/* Coprocessor 0 (rs field) */
#define MASK_CP0(op) MASK_OP_MAJOR(op) | (op & (0x1F << 21))
@ -12219,6 +12233,63 @@ static int decode_micromips_opc (CPUMIPSState *env, DisasContext *ctx, int *is_b
#endif
/* MIPSDSP functions. */
static void gen_mipsdsp_ld(CPUMIPSState *env, DisasContext *ctx, uint32_t opc,
int rd, int base, int offset)
{
const char *opn = "ldx";
TCGv t0;
if (rd == 0) {
MIPS_DEBUG("NOP");
return;
}
check_dsp(ctx);
t0 = tcg_temp_new();
if (base == 0) {
gen_load_gpr(t0, offset);
} else if (offset == 0) {
gen_load_gpr(t0, base);
} else {
gen_op_addr_add(ctx, t0, cpu_gpr[base], cpu_gpr[offset]);
}
save_cpu_state(ctx, 0);
switch (opc) {
case OPC_LBUX:
op_ld_lbu(t0, t0, ctx);
gen_store_gpr(t0, rd);
opn = "lbux";
break;
case OPC_LHX:
op_ld_lh(t0, t0, ctx);
gen_store_gpr(t0, rd);
opn = "lhx";
break;
case OPC_LWX:
op_ld_lw(t0, t0, ctx);
gen_store_gpr(t0, rd);
opn = "lwx";
break;
#if defined(TARGET_MIPS64)
case OPC_LDX:
op_ld_ld(t0, t0, ctx);
gen_store_gpr(t0, rd);
opn = "ldx";
break;
#endif
}
(void)opn; /* avoid a compiler warning */
MIPS_DEBUG("%s %s, %s(%s)", opn,
regnames[rd], regnames[offset], regnames[base]);
tcg_temp_free(t0);
}
/* End MIPSDSP functions. */
static void decode_opc (CPUMIPSState *env, DisasContext *ctx, int *is_branch)
{
int32_t offset;
@ -12575,6 +12646,23 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx, int *is_branch)
check_insn(env, ctx, INSN_LOONGSON2E);
gen_loongson_integer(ctx, op1, rd, rs, rt);
break;
case OPC_LX_DSP:
op2 = MASK_LX(ctx->opcode);
switch (op2) {
#if defined(TARGET_MIPS64)
case OPC_LDX:
#endif
case OPC_LBUX:
case OPC_LHX:
case OPC_LWX:
gen_mipsdsp_ld(env, ctx, op2, rd, rs, rt);
break;
default: /* Invalid */
MIPS_INVAL("MASK LX");
generate_exception(ctx, EXCP_RI);
break;
}
break;
#if defined(TARGET_MIPS64)
case OPC_DEXTM ... OPC_DEXT:
case OPC_DINSM ... OPC_DINS: