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target-sparc: Add MMU_PHYS_IDX

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It's handy to have a mmu idx for physical addresses, so
that mmu disabled and physical access asis can use the
same path as normal accesses.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2016-07-12 21:01:29 -07:00
parent 2f9d35fc40
commit af7a06bac7
3 changed files with 53 additions and 46 deletions
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25
target-sparc/cpu.h
View file

@ -225,9 +225,9 @@ enum {
#define MAX_NWINDOWS 32
#if !defined(TARGET_SPARC64)
#define NB_MMU_MODES 2
#define NB_MMU_MODES 3
#else
#define NB_MMU_MODES 6
#define NB_MMU_MODES 7
typedef struct trap_state {
uint64_t tpc;
uint64_t tnpc;
@ -649,11 +649,13 @@ int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
#define MMU_MODE4_SUFFIX _nucleus
#define MMU_HYPV_IDX 5
#define MMU_MODE5_SUFFIX _hypv
#define MMU_PHYS_IDX 6
#else
#define MMU_USER_IDX 0
#define MMU_MODE0_SUFFIX _user
#define MMU_KERNEL_IDX 1
#define MMU_MODE1_SUFFIX _kernel
#define MMU_PHYS_IDX 2
#endif
#if defined (TARGET_SPARC64)
@ -673,18 +675,27 @@ static inline int cpu_supervisor_mode(CPUSPARCState *env1)
}
#endif
static inline int cpu_mmu_index(CPUSPARCState *env1, bool ifetch)
static inline int cpu_mmu_index(CPUSPARCState *env, bool ifetch)
{
#if defined(CONFIG_USER_ONLY)
return MMU_USER_IDX;
#elif !defined(TARGET_SPARC64)
return env1->psrs;
if ((env->mmuregs[0] & MMU_E) == 0) { /* MMU disabled */
return MMU_PHYS_IDX;
} else {
return env->psrs;
}
#else
if (env1->tl > 0) {
/* IMMU or DMMU disabled. */
if (ifetch
? (env->lsu & IMMU_E) == 0 || (env->pstate & PS_RED) != 0
: (env->lsu & DMMU_E) == 0) {
return MMU_PHYS_IDX;
} else if (env->tl > 0) {
return MMU_NUCLEUS_IDX;
} else if (cpu_hypervisor_mode(env1)) {
} else if (cpu_hypervisor_mode(env)) {
return MMU_HYPV_IDX;
} else if (cpu_supervisor_mode(env1)) {
} else if (cpu_supervisor_mode(env)) {
return MMU_KERNEL_IDX;
} else {
return MMU_USER_IDX;