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target-mips: optimize decode_opc()

Browse source 
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7042 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-04-08 21:47:55 +00:00
parent 72c3a3ee4d
commit 35fbce2c41
1 changed files with 17 additions and 13 deletions
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30
target-mips/translate.c
View file

@ -7527,7 +7527,6 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
case OPC_MOVCI: case OPC_MOVCI:
check_insn(env, ctx, ISA_MIPS4 | ISA_MIPS32); check_insn(env, ctx, ISA_MIPS4 | ISA_MIPS32);
if (env->CP0_Config1 & (1 << CP0C1_FP)) { if (env->CP0_Config1 & (1 << CP0C1_FP)) {
save_cpu_state(ctx, 1);
check_cp1_enabled(ctx); check_cp1_enabled(ctx);
gen_movci(ctx, rd, rs, (ctx->opcode >> 18) & 0x7, gen_movci(ctx, rd, rs, (ctx->opcode >> 18) & 0x7,
(ctx->opcode >> 16) & 1); (ctx->opcode >> 16) & 1);
@ -7623,28 +7622,33 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
case OPC_RDHWR: case OPC_RDHWR:
check_insn(env, ctx, ISA_MIPS32R2); check_insn(env, ctx, ISA_MIPS32R2);
{ {
TCGv t0 = tcg_temp_local_new(); TCGv t0 = tcg_temp_new();
switch (rd) { switch (rd) {
case 0: case 0:
save_cpu_state(ctx, 1); save_cpu_state(ctx, 1);
gen_helper_rdhwr_cpunum(t0); gen_helper_rdhwr_cpunum(t0);
gen_store_gpr(t0, rt);
break; break;
case 1: case 1:
save_cpu_state(ctx, 1); save_cpu_state(ctx, 1);
gen_helper_rdhwr_synci_step(t0); gen_helper_rdhwr_synci_step(t0);
gen_store_gpr(t0, rt);
break; break;
case 2: case 2:
save_cpu_state(ctx, 1); save_cpu_state(ctx, 1);
gen_helper_rdhwr_cc(t0); gen_helper_rdhwr_cc(t0);
gen_store_gpr(t0, rt);
break; break;
case 3: case 3:
save_cpu_state(ctx, 1); save_cpu_state(ctx, 1);
gen_helper_rdhwr_ccres(t0); gen_helper_rdhwr_ccres(t0);
gen_store_gpr(t0, rt);
break; break;
case 29: case 29:
#if defined(CONFIG_USER_ONLY) #if defined(CONFIG_USER_ONLY)
tcg_gen_ld_tl(t0, cpu_env, offsetof(CPUState, tls_value)); tcg_gen_ld_tl(t0, cpu_env, offsetof(CPUState, tls_value));
gen_store_gpr(t0, rt);
break; break;
#else #else
/* XXX: Some CPUs implement this in hardware. /* XXX: Some CPUs implement this in hardware.
@ -7655,15 +7659,14 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
generate_exception(ctx, EXCP_RI); generate_exception(ctx, EXCP_RI);
break; break;
} }
gen_store_gpr(t0, rt);
tcg_temp_free(t0); tcg_temp_free(t0);
} }
break; break;
case OPC_FORK: case OPC_FORK:
check_insn(env, ctx, ASE_MT); check_insn(env, ctx, ASE_MT);
{ {
TCGv t0 = tcg_temp_local_new(); TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_local_new(); TCGv t1 = tcg_temp_new();
gen_load_gpr(t0, rt); gen_load_gpr(t0, rt);
gen_load_gpr(t1, rs); gen_load_gpr(t1, rs);
@ -7675,8 +7678,9 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
case OPC_YIELD: case OPC_YIELD:
check_insn(env, ctx, ASE_MT); check_insn(env, ctx, ASE_MT);
{ {
TCGv t0 = tcg_temp_local_new(); TCGv t0 = tcg_temp_new();
save_cpu_state(ctx, 1);
gen_load_gpr(t0, rs); gen_load_gpr(t0, rs);
gen_helper_yield(t0, t0); gen_helper_yield(t0, t0);
gen_store_gpr(t0, rd); gen_store_gpr(t0, rd);
@ -7748,37 +7752,41 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
case OPC_MFMC0: case OPC_MFMC0:
#ifndef CONFIG_USER_ONLY #ifndef CONFIG_USER_ONLY
{ {
TCGv t0 = tcg_temp_local_new(); TCGv t0 = tcg_temp_new();
op2 = MASK_MFMC0(ctx->opcode); op2 = MASK_MFMC0(ctx->opcode);
switch (op2) { switch (op2) {
case OPC_DMT: case OPC_DMT:
check_insn(env, ctx, ASE_MT); check_insn(env, ctx, ASE_MT);
gen_helper_dmt(t0, t0); gen_helper_dmt(t0, t0);
gen_store_gpr(t0, rt);
break; break;
case OPC_EMT: case OPC_EMT:
check_insn(env, ctx, ASE_MT); check_insn(env, ctx, ASE_MT);
gen_helper_emt(t0, t0); gen_helper_emt(t0, t0);
gen_store_gpr(t0, rt);
break; break;
case OPC_DVPE: case OPC_DVPE:
check_insn(env, ctx, ASE_MT); check_insn(env, ctx, ASE_MT);
gen_helper_dvpe(t0, t0); gen_helper_dvpe(t0, t0);
gen_store_gpr(t0, rt);
break; break;
case OPC_EVPE: case OPC_EVPE:
check_insn(env, ctx, ASE_MT); check_insn(env, ctx, ASE_MT);
gen_helper_evpe(t0, t0); gen_helper_evpe(t0, t0);
gen_store_gpr(t0, rt);
break; break;
case OPC_DI: case OPC_DI:
check_insn(env, ctx, ISA_MIPS32R2); check_insn(env, ctx, ISA_MIPS32R2);
save_cpu_state(ctx, 1);
gen_helper_di(t0); gen_helper_di(t0);
gen_store_gpr(t0, rt);
/* Stop translation as we may have switched the execution mode */ /* Stop translation as we may have switched the execution mode */
ctx->bstate = BS_STOP; ctx->bstate = BS_STOP;
break; break;
case OPC_EI: case OPC_EI:
check_insn(env, ctx, ISA_MIPS32R2); check_insn(env, ctx, ISA_MIPS32R2);
save_cpu_state(ctx, 1);
gen_helper_ei(t0); gen_helper_ei(t0);
gen_store_gpr(t0, rt);
/* Stop translation as we may have switched the execution mode */ /* Stop translation as we may have switched the execution mode */
ctx->bstate = BS_STOP; ctx->bstate = BS_STOP;
break; break;
@ -7787,7 +7795,6 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
generate_exception(ctx, EXCP_RI); generate_exception(ctx, EXCP_RI);
break; break;
} }
gen_store_gpr(t0, rt);
tcg_temp_free(t0); tcg_temp_free(t0);
} }
#endif /* !CONFIG_USER_ONLY */ #endif /* !CONFIG_USER_ONLY */
@ -7839,7 +7846,6 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
case OPC_SWC1: case OPC_SWC1:
case OPC_SDC1: case OPC_SDC1:
if (env->CP0_Config1 & (1 << CP0C1_FP)) { if (env->CP0_Config1 & (1 << CP0C1_FP)) {
save_cpu_state(ctx, 1);
check_cp1_enabled(ctx); check_cp1_enabled(ctx);
gen_flt_ldst(ctx, op, rt, rs, imm); gen_flt_ldst(ctx, op, rt, rs, imm);
} else { } else {
@ -7849,7 +7855,6 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
case OPC_CP1: case OPC_CP1:
if (env->CP0_Config1 & (1 << CP0C1_FP)) { if (env->CP0_Config1 & (1 << CP0C1_FP)) {
save_cpu_state(ctx, 1);
check_cp1_enabled(ctx); check_cp1_enabled(ctx);
op1 = MASK_CP1(ctx->opcode); op1 = MASK_CP1(ctx->opcode);
switch (op1) { switch (op1) {
@ -7908,7 +7913,6 @@ static void decode_opc (CPUState *env, DisasContext *ctx)
case OPC_CP3: case OPC_CP3:
if (env->CP0_Config1 & (1 << CP0C1_FP)) { if (env->CP0_Config1 & (1 << CP0C1_FP)) {
save_cpu_state(ctx, 1);
check_cp1_enabled(ctx); check_cp1_enabled(ctx);
op1 = MASK_CP3(ctx->opcode); op1 = MASK_CP3(ctx->opcode);
switch (op1) { switch (op1) {