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target-xtensa: implement do_unassigned_access callback

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Depending on access type raise either InstrPIFDataError or
LoadStorePIFDataError exception.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2014-02-12 14:35:56 +04:00
parent 8bb3b57544
commit 4246e225c0
3 changed files with 18 additions and 0 deletions
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3
target-xtensa/cpu-qom.h
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@ -85,6 +85,9 @@ static inline XtensaCPU *xtensa_env_get_cpu(const CPUXtensaState *env)
void xtensa_cpu_do_interrupt(CPUState *cpu);
bool xtensa_cpu_exec_interrupt(CPUState *cpu, int interrupt_request);
void xtensa_cpu_do_unassigned_access(CPUState *cpu, hwaddr addr,
bool is_write, bool is_exec, int opaque,
unsigned size);
void xtensa_cpu_dump_state(CPUState *cpu, FILE *f,
fprintf_function cpu_fprintf, int flags);
hwaddr xtensa_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);

1
target-xtensa/cpu.c
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@ -151,6 +151,7 @@ static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
#ifndef CONFIG_USER_ONLY
cc->do_unaligned_access = xtensa_cpu_do_unaligned_access;
cc->get_phys_page_debug = xtensa_cpu_get_phys_page_debug;
cc->do_unassigned_access = xtensa_cpu_do_unassigned_access;
#endif
cc->debug_excp_handler = xtensa_breakpoint_handler;
dc->vmsd = &vmstate_xtensa_cpu;

14
target-xtensa/op_helper.c
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@ -71,6 +71,20 @@ void tlb_fill(CPUState *cs,
}
}
void xtensa_cpu_do_unassigned_access(CPUState *cs, hwaddr addr,
bool is_write, bool is_exec, int opaque,
unsigned size)
{
XtensaCPU *cpu = XTENSA_CPU(cs);
CPUXtensaState *env = &cpu->env;
HELPER(exception_cause_vaddr)(env, env->pc,
is_exec ?
INSTR_PIF_ADDR_ERROR_CAUSE :
LOAD_STORE_PIF_ADDR_ERROR_CAUSE,
is_exec ? addr : cs->mem_io_vaddr);
}
static void tb_invalidate_virtual_addr(CPUXtensaState *env, uint32_t vaddr)
{
uint32_t paddr;