@@ -59,6 +59,7 @@ static void xtensa_cpu_reset(CPUState *s)
env->sregs[CACHEATTR] = 0x22222222;
env->sregs[ATOMCTL] = xtensa_option_enabled(env->config,
XTENSA_OPTION_ATOMCTL) ? 0x28 : 0x15;
+ rotate_window_abs(env, env->sregs[WINDOW_BASE]);
env->pending_irq_level = 0;
reset_mmu(env);
@@ -334,11 +334,11 @@ typedef struct XtensaConfigList {
typedef struct CPUXtensaState {
const XtensaConfig *config;
- uint32_t regs[16];
+ uint32_t *regs;
uint32_t pc;
uint32_t sregs[256];
uint32_t uregs[256];
- uint32_t phys_regs[MAX_NAREG];
+ uint32_t phys_regs[MAX_NAREG + 12];
float32 fregs[16];
float_status fp_status;
@@ -396,6 +396,7 @@ void xtensa_timer_irq(CPUXtensaState *env, uint32_t id, uint32_t active);
void xtensa_rearm_ccompare_timer(CPUXtensaState *env);
int cpu_xtensa_signal_handler(int host_signum, void *pinfo, void *puc);
void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf);
+void rotate_window_abs(CPUXtensaState *env, uint32_t position);
void xtensa_sync_window_from_phys(CPUXtensaState *env);
void xtensa_sync_phys_from_window(CPUXtensaState *env);
uint32_t xtensa_tlb_get_addr_mask(const CPUXtensaState *env, bool dtlb, uint32_t way);
@@ -166,39 +166,6 @@ uint32_t HELPER(nsau)(uint32_t v)
return v ? clz32(v) : 32;
}
-static void copy_window_from_phys(CPUXtensaState *env,
- uint32_t window, uint32_t phys, uint32_t n)
-{
- assert(phys < env->config->nareg);
- if (phys + n <= env->config->nareg) {
- memcpy(env->regs + window, env->phys_regs + phys,
- n * sizeof(uint32_t));
- } else {
- uint32_t n1 = env->config->nareg - phys;
- memcpy(env->regs + window, env->phys_regs + phys,
- n1 * sizeof(uint32_t));
- memcpy(env->regs + window + n1, env->phys_regs,
- (n - n1) * sizeof(uint32_t));
- }
-}
-
-static void copy_phys_from_window(CPUXtensaState *env,
- uint32_t phys, uint32_t window, uint32_t n)
-{
- assert(phys < env->config->nareg);
- if (phys + n <= env->config->nareg) {
- memcpy(env->phys_regs + phys, env->regs + window,
- n * sizeof(uint32_t));
- } else {
- uint32_t n1 = env->config->nareg - phys;
- memcpy(env->phys_regs + phys, env->regs + window,
- n1 * sizeof(uint32_t));
- memcpy(env->phys_regs, env->regs + window + n1,
- (n - n1) * sizeof(uint32_t));
- }
-}
-
-
static inline unsigned windowbase_bound(unsigned a, const CPUXtensaState *env)
{
return a & (env->config->nareg / 4 - 1);
@@ -211,18 +178,25 @@ static inline unsigned windowstart_bit(unsigned a, const CPUXtensaState *env)
void xtensa_sync_window_from_phys(CPUXtensaState *env)
{
- copy_window_from_phys(env, 0, env->sregs[WINDOW_BASE] * 4, 16);
+ if (env->sregs[WINDOW_BASE] * 4 + 16 > env->config->nareg)
+ memcpy(env->phys_regs + env->config->nareg, env->phys_regs,
+ (env->sregs[WINDOW_BASE] * 4 + 16 - env->config->nareg) *
+ sizeof(uint32_t));
}
void xtensa_sync_phys_from_window(CPUXtensaState *env)
{
- copy_phys_from_window(env, env->sregs[WINDOW_BASE] * 4, 0, 16);
+ if (env->sregs[WINDOW_BASE] * 4 + 16 > env->config->nareg)
+ memcpy(env->phys_regs, env->phys_regs + env->config->nareg,
+ (env->sregs[WINDOW_BASE] * 4 + 16 - env->config->nareg) *
+ sizeof(uint32_t));
}
-static void rotate_window_abs(CPUXtensaState *env, uint32_t position)
+void rotate_window_abs(CPUXtensaState *env, uint32_t position)
{
xtensa_sync_phys_from_window(env);
env->sregs[WINDOW_BASE] = windowbase_bound(position, env);
+ env->regs = env->phys_regs + env->sregs[WINDOW_BASE] * 4;
xtensa_sync_window_from_phys(env);
}
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
@@ -70,6 +70,7 @@ typedef struct DisasContext {
} DisasContext;
static TCGv_ptr cpu_env;
+static TCGv_ptr cpu_regs;
static TCGv_i32 cpu_pc;
static TCGv_i32 cpu_R[16];
static TCGv_i32 cpu_FR[16];
@@ -208,12 +209,14 @@ void xtensa_translate_init(void)