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target/alpha: Switch to do_transaction_failed() hook

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Switch the alpha target from the old unassigned_access hook
to the new do_transaction_failed hook. This allows us to
resolve a ??? in the old hook implementation.

The only part of the alpha target that does physical
memory accesses is reading the page table -- add a
TODO comment there to the effect that we should handle
bus faults on page table walks. (Since the palcode
doesn't actually do anything useful on a bus fault anyway
it's a bit moot for now.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1502196172-13818-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Peter Maydell 2017-08-08 13:42:52 +01:00 • committed by Richard Henderson
parent 99a92b9459
commit 6ad4d7eed0
4 changed files with 24 additions and 13 deletions
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8
target/alpha/cpu.h
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@ -486,9 +486,11 @@ void cpu_alpha_store_fpcr (CPUAlphaState *env, uint64_t val);
uint64_t cpu_alpha_load_gr(CPUAlphaState *env, unsigned reg);
void cpu_alpha_store_gr(CPUAlphaState *env, unsigned reg, uint64_t val);
#ifndef CONFIG_USER_ONLY
QEMU_NORETURN void alpha_cpu_unassigned_access(CPUState *cpu, hwaddr addr,
bool is_write, bool is_exec,
int unused, unsigned size);
void alpha_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
vaddr addr, unsigned size,
MMUAccessType access_type,
int mmu_idx, MemTxAttrs attrs,
MemTxResult response, uintptr_t retaddr);
#endif
static inline void cpu_get_tb_cpu_state(CPUAlphaState *env, target_ulong *pc,