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target/xtensa: add static vectors selection 

Xtensa cores may have two distinct addresses for the static vectors
group. Provide a function to select one of them.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2013-02-17 16:38:09 +04:00
parent a470b33259
commit 17ab14acd4
3 changed files with 20 additions and 3 deletions
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2
target/xtensa/cpu.c
View File

@ -60,7 +60,7 @@ static void xtensa_cpu_reset(CPUState *s)
xcc->parent_reset(s);
env->exception_taken = 0;
env->pc = env->config->exception_vector[EXC_RESET];
env->pc = env->config->exception_vector[EXC_RESET0 + env->static_vectors];
env->sregs[LITBASE] &= ~1;
env->sregs[PS] = xtensa_option_enabled(env->config,
XTENSA_OPTION_INTERRUPT) ? 0x1f : 0x10;

10
target/xtensa/cpu.h
View File

@ -209,7 +209,8 @@ enum {
enum {
/* Static vectors */
EXC_RESET,
EXC_RESET0,
EXC_RESET1,
EXC_MEMORY_ERROR,
/* Dynamic vectors */
@ -373,6 +374,7 @@ typedef struct CPUXtensaState {
int64_t halt_clock;
int exception_taken;
unsigned static_vectors;
/* Watchpoints for DBREAK registers */
struct CPUWatchpoint *cpu_watchpoint[MAX_NDBREAK];
@ -461,6 +463,12 @@ void reset_mmu(CPUXtensaState *env);
void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUXtensaState *env);
void debug_exception_env(CPUXtensaState *new_env, uint32_t cause);
static inline void xtensa_select_static_vectors(CPUXtensaState *env,
unsigned n)
{
assert(n < 2);
env->static_vectors = n;
}
#define XTENSA_OPTION_BIT(opt) (((uint64_t)1) << (opt))
#define XTENSA_OPTION_ALL (~(uint64_t)0)

11
target/xtensa/overlay_tool.h
View File

@ -47,6 +47,14 @@
#define XCHAL_VECBASE_RESET_VADDR 0
#endif
#ifndef XCHAL_RESET_VECTOR0_VADDR
#define XCHAL_RESET_VECTOR0_VADDR XCHAL_RESET_VECTOR_VADDR
#endif
#ifndef XCHAL_RESET_VECTOR1_VADDR
#define XCHAL_RESET_VECTOR1_VADDR XCHAL_RESET_VECTOR_VADDR
#endif
#ifndef XCHAL_HW_MIN_VERSION
#define XCHAL_HW_MIN_VERSION 0
#endif
@ -133,7 +141,8 @@
#endif
#define EXCEPTION_VECTORS { \
[EXC_RESET] = XCHAL_RESET_VECTOR_VADDR, \
[EXC_RESET0] = XCHAL_RESET_VECTOR0_VADDR, \
[EXC_RESET1] = XCHAL_RESET_VECTOR1_VADDR, \
WINDOW_VECTORS \
[EXC_KERNEL] = XCHAL_KERNEL_VECTOR_VADDR, \
[EXC_USER] = XCHAL_USER_VECTOR_VADDR, \