diff options
Diffstat (limited to 'target-mips/cpu.h')
| -rw-r--r-- | target-mips/cpu.h | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/target-mips/cpu.h b/target-mips/cpu.h index 363fcd8..5fbb90e 100644 --- a/target-mips/cpu.h +++ b/target-mips/cpu.h @@ -107,7 +107,7 @@ struct CPUMIPSFPUContext { #define FP_UNIMPLEMENTED 32 }; -#define NB_MMU_MODES 2 +#define NB_MMU_MODES 3 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext; struct CPUMIPSMVPContext { @@ -285,8 +285,7 @@ struct CPUMIPSState { #define CP0St_KX 7 #define CP0St_SX 6 #define CP0St_UX 5 -#define CP0St_UM 4 -#define CP0St_R0 3 +#define CP0St_KSU 3 #define CP0St_ERL 2 #define CP0St_EXL 1 #define CP0St_IE 0 @@ -418,9 +417,14 @@ struct CPUMIPSState { /* TMASK defines different execution modes */ #define MIPS_HFLAG_TMASK 0x00FF #define MIPS_HFLAG_MODE 0x0007 /* execution modes */ -#define MIPS_HFLAG_UM 0x0001 /* user mode */ -#define MIPS_HFLAG_DM 0x0002 /* Debug mode */ -#define MIPS_HFLAG_SM 0x0004 /* Supervisor mode */ + /* The KSU flags must be the lowest bits in hflags. The flag order + must be the same as defined for CP0 Status. This allows to use + the bits as the value of mmu_idx. */ +#define MIPS_HFLAG_KSU 0x0003 /* kernel/supervisor/user mode mask */ +#define MIPS_HFLAG_UM 0x0002 /* user mode flag */ +#define MIPS_HFLAG_SM 0x0001 /* supervisor mode flag */ +#define MIPS_HFLAG_KM 0x0000 /* kernel mode flag */ +#define MIPS_HFLAG_DM 0x0004 /* Debug mode */ #define MIPS_HFLAG_64 0x0008 /* 64-bit instructions enabled */ #define MIPS_HFLAG_CP0 0x0010 /* CP0 enabled */ #define MIPS_HFLAG_FPU 0x0020 /* FPU enabled */ @@ -489,13 +493,15 @@ void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec, #define cpu_signal_handler cpu_mips_signal_handler #define cpu_list mips_cpu_list -/* MMU modes definitions */ +/* MMU modes definitions. We carefully match the indices with our + hflags layout. */ #define MMU_MODE0_SUFFIX _kernel -#define MMU_MODE1_SUFFIX _user -#define MMU_USER_IDX 1 +#define MMU_MODE1_SUFFIX _super +#define MMU_MODE2_SUFFIX _user +#define MMU_USER_IDX 2 static inline int cpu_mmu_index (CPUState *env) { - return (env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM ? 1 : 0; + return env->hflags & MIPS_HFLAG_KSU; } #include "cpu-all.h" |