target/ppc: Add do_unaligned_access hook
This allows faults from MO_ALIGN to have the same effect as from gen_check_align. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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@ -22,7 +22,7 @@
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#include "exec/helper-proto.h"
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#include "exec/exec-all.h"
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#include "exec/cpu_ldst.h"
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#include "internal.h"
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#include "helper_regs.h"
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//#define DEBUG_OP
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@ -1198,3 +1198,19 @@ void helper_book3s_msgsnd(target_ulong rb)
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qemu_mutex_unlock_iothread();
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}
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#endif
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void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
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MMUAccessType access_type,
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int mmu_idx, uintptr_t retaddr)
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{
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CPUPPCState *env = cs->env_ptr;
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uint32_t insn;
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/* Restore state and reload the insn we executed, for filling in DSISR. */
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cpu_restore_state(cs, retaddr, true);
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insn = cpu_ldl_code(env, env->nip);
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cs->exception_index = POWERPC_EXCP_ALIGN;
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env->error_code = insn & 0x03FF0000;
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cpu_loop_exit(cs);
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}
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@ -252,4 +252,9 @@ static inline void putVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
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void helper_compute_fprf_float16(CPUPPCState *env, float16 arg);
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void helper_compute_fprf_float32(CPUPPCState *env, float32 arg);
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void helper_compute_fprf_float128(CPUPPCState *env, float128 arg);
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/* Raise a data fault alignment exception for the specified virtual address */
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void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
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MMUAccessType access_type,
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int mmu_idx, uintptr_t retaddr);
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#endif /* PPC_INTERNAL_H */
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@ -10457,6 +10457,7 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
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cc->set_pc = ppc_cpu_set_pc;
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cc->gdb_read_register = ppc_cpu_gdb_read_register;
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cc->gdb_write_register = ppc_cpu_gdb_write_register;
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cc->do_unaligned_access = ppc_cpu_do_unaligned_access;
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#ifdef CONFIG_USER_ONLY
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cc->handle_mmu_fault = ppc_cpu_handle_mmu_fault;
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#else
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