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authorJia Liu <proljc@gmail.com>2012-10-24 22:17:04 +0800
committerAurelien Jarno <aurelien@aurel32.net>2012-10-31 20:24:55 +0100
commite45a93e2590051e77a3d944a0feb3360a1ff1841 (patch)
treed170528ece46d07420a173a581ba13a2689c29c9 /target-mips/translate.c
parent4133498f8e532f9a32dae2153ef5e14433626e9f (diff)
target-mips: Add ASE DSP branch instructions
Add MIPS ASE DSP Branch instructions. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-mips/translate.c')
-rw-r--r--target-mips/translate.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c
index 134d06f9f0..6677d2b531 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -332,6 +332,14 @@ enum {
OPC_DSHD = (0x05 << 6) | OPC_DBSHFL,
};
+/* MIPS DSP REGIMM opcodes */
+enum {
+ OPC_BPOSGE32 = (0x1C << 16) | OPC_REGIMM,
+#if defined(TARGET_MIPS64)
+ OPC_BPOSGE64 = (0x1D << 16) | OPC_REGIMM,
+#endif
+};
+
/* Coprocessor 0 (rs field) */
#define MASK_CP0(op) MASK_OP_MAJOR(op) | (op & (0x1F << 21))
@@ -3230,6 +3238,16 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc,
}
btgt = ctx->pc + insn_bytes + offset;
break;
+ case OPC_BPOSGE32:
+#if defined(TARGET_MIPS64)
+ case OPC_BPOSGE64:
+ tcg_gen_andi_tl(t0, cpu_dspctrl, 0x7F);
+#else
+ tcg_gen_andi_tl(t0, cpu_dspctrl, 0x3F);
+#endif
+ bcond_compute = 1;
+ btgt = ctx->pc + insn_bytes + offset;
+ break;
case OPC_J:
case OPC_JAL:
case OPC_JALX:
@@ -3418,6 +3436,16 @@ static void gen_compute_branch (DisasContext *ctx, uint32_t opc,
tcg_gen_setcondi_tl(TCG_COND_LT, bcond, t0, 0);
MIPS_DEBUG("bltzl %s, " TARGET_FMT_lx, regnames[rs], btgt);
goto likely;
+ case OPC_BPOSGE32:
+ tcg_gen_setcondi_tl(TCG_COND_GE, bcond, t0, 32);
+ MIPS_DEBUG("bposge32 " TARGET_FMT_lx, btgt);
+ goto not_likely;
+#if defined(TARGET_MIPS64)
+ case OPC_BPOSGE64:
+ tcg_gen_setcondi_tl(TCG_COND_GE, bcond, t0, 64);
+ MIPS_DEBUG("bposge64 " TARGET_FMT_lx, btgt);
+ goto not_likely;
+#endif
case OPC_BLTZALS:
case OPC_BLTZAL:
ctx->hflags |= (opc == OPC_BLTZALS
@@ -12589,6 +12617,14 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx, int *is_branch)
check_insn(env, ctx, ISA_MIPS32R2);
/* Treat as NOP. */
break;
+ case OPC_BPOSGE32: /* MIPS DSP branch */
+#if defined(TARGET_MIPS64)
+ case OPC_BPOSGE64:
+#endif
+ check_dsp(ctx);
+ gen_compute_branch(ctx, op1, 4, -1, -2, (int32_t)imm << 2);
+ *is_branch = 1;
+ break;
default: /* Invalid */
MIPS_INVAL("regimm");
generate_exception(ctx, EXCP_RI);