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target-mips: move LL and SC instructions 

The encoding of LL and SC instruction has changed in MIPS32 Release 6.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
This commit is contained in:
Leon Alrae 2014-06-27 08:49:01 +01:00
parent b691d9d2a0
commit 4368b29a26
2 changed files with 34 additions and 3 deletions
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9
disas/mips.c
View File

@ -119,6 +119,8 @@ see <http://www.gnu.org/licenses/>. */
#define OP_SH_IMMEDIATE 0
#define OP_MASK_DELTA 0xffff
#define OP_SH_DELTA 0
#define OP_MASK_DELTA_R6 0x1ff
#define OP_SH_DELTA_R6 7
#define OP_MASK_FUNCT 0x3f
#define OP_SH_FUNCT 0
#define OP_MASK_SPEC 0x3f
@ -1215,6 +1217,8 @@ const struct mips_opcode mips_builtin_opcodes[] =
them first. The assemblers uses a hash table based on the
instruction name anyhow. */
/* name, args, match, mask, pinfo, membership */
{"ll", "t,o(b)", 0x7c000036, 0xfc00007f, LDD|RD_b|WR_t, 0, I32R6},
{"sc", "t,o(b)", 0x7c000026, 0xfc00007f, LDD|RD_b|WR_t, 0, I32R6},
{"seleqz", "d,v,t", 0x00000035, 0xfc0007ff, WR_d|RD_s|RD_t, 0, I32R6},
{"selnez", "d,v,t", 0x00000037, 0xfc0007ff, WR_d|RD_s|RD_t, 0, I32R6},
{"pref", "k,o(b)", 0xcc000000, 0xfc000000, RD_b, 0, I4|I32|G3 },
@ -3734,7 +3738,10 @@ print_insn_args (const char *d,
case 'j': /* Same as i, but sign-extended. */
case 'o':
delta = (l >> OP_SH_DELTA) & OP_MASK_DELTA;
delta = (opp->membership == I32R6) ?
(l >> OP_SH_DELTA_R6) & OP_MASK_DELTA_R6 :
(l >> OP_SH_DELTA) & OP_MASK_DELTA;
if (delta & 0x8000)
delta |= ~0xffff;
(*info->fprintf_func) (info->stream, "%d",

28
target-mips/translate.c
View File

@ -347,6 +347,10 @@ enum {
/* MIPS DSP Accumulator and DSPControl Access Sub-class */
OPC_EXTR_W_DSP = 0x38 | OPC_SPECIAL3,
OPC_DEXTR_W_DSP = 0x3C | OPC_SPECIAL3,
/* R6 */
R6_OPC_LL = 0x36 | OPC_SPECIAL3,
R6_OPC_SC = 0x26 | OPC_SPECIAL3,
};
/* BSHFL opcodes */
@ -1775,6 +1779,7 @@ static void gen_ld(DisasContext *ctx, uint32_t opc,
opn = "lwr";
break;
case OPC_LL:
case R6_OPC_LL:
save_cpu_state(ctx, 1);
op_ld_ll(t0, t0, ctx);
gen_store_gpr(t0, rt);
@ -1868,6 +1873,7 @@ static void gen_st_cond (DisasContext *ctx, uint32_t opc, int rt,
break;
#endif
case OPC_SC:
case R6_OPC_SC:
save_cpu_state(ctx, 1);
op_st_sc(t1, t0, rt, ctx);
opn = "sc";
@ -14804,6 +14810,10 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx)
case OPC_SPECIAL3:
op1 = MASK_SPECIAL3(ctx->opcode);
switch (op1) {
case R6_OPC_LL:
check_insn(ctx, ISA_MIPS32R6);
gen_ld(ctx, op1, rt, rs, imm >> 7);
break;
case OPC_EXT:
case OPC_INS:
check_insn(ctx, ISA_MIPS32R2);
@ -15108,6 +15118,19 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx)
break;
}
break;
case R6_OPC_SC: /* OPC_DMOD_G_2E */
if (ctx->insn_flags & ISA_MIPS32R6) {
gen_st_cond(ctx, op1, rt, rs, imm >> 7);
} else {
#if defined(TARGET_MIPS64)
check_insn(ctx, INSN_LOONGSON2E);
gen_loongson_integer(ctx, op1, rd, rs, rt);
#else
/* Invalid in MIPS32 */
generate_exception(ctx, EXCP_RI);
#endif
}
break;
#if defined(TARGET_MIPS64)
case OPC_DEXTM ... OPC_DEXT:
case OPC_DINSM ... OPC_DINS:
@ -15123,7 +15146,7 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx)
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:
case OPC_DMODU_G_2E:
check_insn(ctx, INSN_LOONGSON2E);
gen_loongson_integer(ctx, op1, rd, rs, rt);
break;
@ -15512,10 +15535,10 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx)
break;
case OPC_LWL: /* Load and stores */
case OPC_LWR:
case OPC_LL:
check_insn_opc_removed(ctx, ISA_MIPS32R6);
case OPC_LB ... OPC_LH:
case OPC_LW ... OPC_LHU:
case OPC_LL:
gen_ld(ctx, op, rt, rs, imm);
break;
case OPC_SWL:
@ -15526,6 +15549,7 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx)
gen_st(ctx, op, rt, rs, imm);
break;
case OPC_SC:
check_insn_opc_removed(ctx, ISA_MIPS32R6);
gen_st_cond(ctx, op, rt, rs, imm);
break;
case OPC_CACHE: