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tcg: Add helper_unaligned_{ld,st} for user-only sigbus
To be called from tcg generated code on hosts that support unaligned accesses natively, in response to an access that is supposed to be aligned. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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@ -27,6 +27,7 @@
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#include "exec/helper-proto.h"
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#include "qemu/atomic128.h"
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#include "trace/trace-root.h"
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#include "tcg/tcg-ldst.h"
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#include "internal.h"
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__thread uintptr_t helper_retaddr;
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@ -215,6 +216,16 @@ static void validate_memop(MemOpIdx oi, MemOp expected)
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#endif
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}
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void helper_unaligned_ld(CPUArchState *env, target_ulong addr)
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{
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cpu_loop_exit_sigbus(env_cpu(env), addr, MMU_DATA_LOAD, GETPC());
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}
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void helper_unaligned_st(CPUArchState *env, target_ulong addr)
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{
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cpu_loop_exit_sigbus(env_cpu(env), addr, MMU_DATA_STORE, GETPC());
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}
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static void *cpu_mmu_lookup(CPUArchState *env, target_ulong addr,
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MemOpIdx oi, uintptr_t ra, MMUAccessType type)
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{
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@ -70,5 +70,10 @@ void helper_be_stl_mmu(CPUArchState *env, target_ulong addr, uint32_t val,
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void helper_be_stq_mmu(CPUArchState *env, target_ulong addr, uint64_t val,
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MemOpIdx oi, uintptr_t retaddr);
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#else
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void QEMU_NORETURN helper_unaligned_ld(CPUArchState *env, target_ulong addr);
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void QEMU_NORETURN helper_unaligned_st(CPUArchState *env, target_ulong addr);
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#endif /* CONFIG_SOFTMMU */
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#endif /* TCG_LDST_H */
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