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target-mips: add support for CP0_Config4 

Add CP0_Config4, define rw_bitmask.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Reviewed-by: Eric Johnson <eric.johnson@imgtec.com>
This commit is contained in:
Petar Jovanovic 2014-01-24 13:45:05 +01:00
parent e527526d35
commit b4160af160
5 changed files with 31 additions and 3 deletions
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3
target-mips/cpu.h
View File

@ -368,6 +368,9 @@ struct CPUMIPSState {
#define CP0C3_MT 2
#define CP0C3_SM 1
#define CP0C3_TL 0
uint32_t CP0_Config4;
uint32_t CP0_Config4_rw_bitmask;
#define CP0C4_M 31
int32_t CP0_Config6;
int32_t CP0_Config7;
/* XXX: Maybe make LLAddr per-TC? */

1
target-mips/helper.h
View File

@ -134,6 +134,7 @@ DEF_HELPER_2(mtc0_ebase, void, env, tl)
DEF_HELPER_2(mttc0_ebase, void, env, tl)
DEF_HELPER_2(mtc0_config0, void, env, tl)
DEF_HELPER_2(mtc0_config2, void, env, tl)
DEF_HELPER_2(mtc0_config4, void, env, tl)
DEF_HELPER_2(mtc0_lladdr, void, env, tl)
DEF_HELPER_3(mtc0_watchlo, void, env, tl, i32)
DEF_HELPER_3(mtc0_watchhi, void, env, tl, i32)

6
target-mips/op_helper.c
View File

@ -1489,6 +1489,12 @@ void helper_mtc0_config2(CPUMIPSState *env, target_ulong arg1)
env->CP0_Config2 = (env->CP0_Config2 & 0x8FFF0FFF);
}
void helper_mtc0_config4(CPUMIPSState *env, target_ulong arg1)
{
env->CP0_Config4 = (env->CP0_Config4 & (~env->CP0_Config4_rw_bitmask)) |
(arg1 & env->CP0_Config4_rw_bitmask);
}
void helper_mtc0_lladdr(CPUMIPSState *env, target_ulong arg1)
{
target_long mask = env->CP0_LLAddr_rw_bitmask;

15
target-mips/translate.c
View File

@ -4405,7 +4405,11 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int reg, int sel)
gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_Config3));
rn = "Config3";
break;
/* 4,5 are reserved */
case 4:
gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_Config4));
rn = "Config4";
break;
/* 5 is reserved */
/* 6,7 are implementation dependent */
case 6:
gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_Config6));
@ -4982,7 +4986,12 @@ static void gen_mtc0(DisasContext *ctx, TCGv arg, int reg, int sel)
/* ignored, read only */
rn = "Config3";
break;
/* 4,5 are reserved */
case 4:
gen_helper_mtc0_config4(cpu_env, arg);
rn = "Config4";
ctx->bstate = BS_STOP;
break;
/* 5 is reserved */
/* 6,7 are implementation dependent */
case 6:
/* ignored */
@ -15916,6 +15925,8 @@ void cpu_state_reset(CPUMIPSState *env)
env->CP0_Config1 = env->cpu_model->CP0_Config1;
env->CP0_Config2 = env->cpu_model->CP0_Config2;
env->CP0_Config3 = env->cpu_model->CP0_Config3;
env->CP0_Config4 = env->cpu_model->CP0_Config4;
env->CP0_Config4_rw_bitmask = env->cpu_model->CP0_Config4_rw_bitmask;
env->CP0_Config6 = env->cpu_model->CP0_Config6;
env->CP0_Config7 = env->cpu_model->CP0_Config7;
env->CP0_LLAddr_rw_bitmask = env->cpu_model->CP0_LLAddr_rw_bitmask

9
target-mips/translate_init.c
View File

@ -45,6 +45,9 @@
(0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \
(0 << CP0C3_SM) | (0 << CP0C3_TL))
#define MIPS_CONFIG4 \
((0 << CP0C4_M))
/* MMU types, the first four entries have the same layout as the
CP0C0_MT field. */
enum mips_mmu_types {
@ -64,6 +67,8 @@ struct mips_def_t {
int32_t CP0_Config1;
int32_t CP0_Config2;
int32_t CP0_Config3;
int32_t CP0_Config4;
int32_t CP0_Config4_rw_bitmask;
int32_t CP0_Config6;
int32_t CP0_Config7;
target_ulong CP0_LLAddr_rw_bitmask;
@ -345,7 +350,9 @@ static const mips_def_t mips_defs[] =
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_M),
.CP0_Config4 = MIPS_CONFIG4,
.CP0_Config4_rw_bitmask = 0,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,