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target-mips: add support for CP0_Config5

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Add CP0_Config5, define rw_bitmask and enable modifications.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Reviewed-by: Eric Johnson <eric.johnson@imgtec.com>
This commit is contained in:
Petar Jovanovic 2014-01-17 19:25:57 +01:00
parent b4160af160
commit b4dd99a363
5 changed files with 40 additions and 3 deletions
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10
target-mips/cpu.h
View file

@ -73,6 +73,7 @@ struct CPUMIPSFPUContext {
float_status fp_status;
/* fpu implementation/revision register (fir) */
uint32_t fcr0;
#define FCR0_UFRP 28
#define FCR0_F64 22
#define FCR0_L 21
#define FCR0_W 20
@ -371,6 +372,15 @@ struct CPUMIPSState {
uint32_t CP0_Config4;
uint32_t CP0_Config4_rw_bitmask;
#define CP0C4_M 31
uint32_t CP0_Config5;
uint32_t CP0_Config5_rw_bitmask;
#define CP0C5_M 31
#define CP0C5_K 30
#define CP0C5_CV 29
#define CP0C5_EVA 28
#define CP0C5_MSAEn 27
#define CP0C5_UFR 2
#define CP0C5_NFExists 0
int32_t CP0_Config6;
int32_t CP0_Config7;
/* XXX: Maybe make LLAddr per-TC? */

1
target-mips/helper.h
View file

@ -135,6 +135,7 @@ 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_config5, 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

@ -1495,6 +1495,12 @@ void helper_mtc0_config4(CPUMIPSState *env, target_ulong arg1)
(arg1 & env->CP0_Config4_rw_bitmask);
}
void helper_mtc0_config5(CPUMIPSState *env, target_ulong arg1)
{
env->CP0_Config5 = (env->CP0_Config5 & (~env->CP0_Config5_rw_bitmask)) |
(arg1 & env->CP0_Config5_rw_bitmask);
}
void helper_mtc0_lladdr(CPUMIPSState *env, target_ulong arg1)
{
target_long mask = env->CP0_LLAddr_rw_bitmask;

14
target-mips/translate.c
View file

@ -4409,7 +4409,10 @@ static void gen_mfc0(DisasContext *ctx, TCGv arg, int reg, int sel)
gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_Config4));
rn = "Config4";
break;
/* 5 is reserved */
case 5:
gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_Config5));
rn = "Config5";
break;
/* 6,7 are implementation dependent */
case 6:
gen_mfc0_load32(arg, offsetof(CPUMIPSState, CP0_Config6));
@ -4991,7 +4994,12 @@ static void gen_mtc0(DisasContext *ctx, TCGv arg, int reg, int sel)
rn = "Config4";
ctx->bstate = BS_STOP;
break;
/* 5 is reserved */
case 5:
gen_helper_mtc0_config5(cpu_env, arg);
rn = "Config5";
/* Stop translation as we may have switched the execution mode */
ctx->bstate = BS_STOP;
break;
/* 6,7 are implementation dependent */
case 6:
/* ignored */
@ -15927,6 +15935,8 @@ void cpu_state_reset(CPUMIPSState *env)
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_Config5 = env->cpu_model->CP0_Config5;
env->CP0_Config5_rw_bitmask = env->cpu_model->CP0_Config5_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

12
target-mips/translate_init.c
View file

@ -48,6 +48,9 @@
#define MIPS_CONFIG4 \
((0 << CP0C4_M))
#define MIPS_CONFIG5 \
((0 << CP0C5_M))
/* MMU types, the first four entries have the same layout as the
CP0C0_MT field. */
enum mips_mmu_types {
@ -69,6 +72,8 @@ struct mips_def_t {
int32_t CP0_Config3;
int32_t CP0_Config4;
int32_t CP0_Config4_rw_bitmask;
int32_t CP0_Config5;
int32_t CP0_Config5_rw_bitmask;
int32_t CP0_Config6;
int32_t CP0_Config7;
target_ulong CP0_LLAddr_rw_bitmask;
@ -351,8 +356,13 @@ static const mips_def_t mips_defs[] =
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_M),
.CP0_Config4 = MIPS_CONFIG4,
.CP0_Config4 = MIPS_CONFIG4 | (1 << CP0C4_M),
.CP0_Config4_rw_bitmask = 0,
.CP0_Config5 = MIPS_CONFIG5,
.CP0_Config5_rw_bitmask = (0 << CP0C5_M) | (1 << CP0C5_K) |
(1 << CP0C5_CV) | (0 << CP0C5_EVA) |
(1 << CP0C5_MSAEn) | (0 << CP0C5_UFR) |
(0 << CP0C5_NFExists),
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,