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Linux/MIPS enables software fixups for user-mode unaligned scalar accesses by default through MIPS_FIXADE/TIF_FIXADE. QEMU linux-user did not model that ABI, so MIPS guests took fatal AdEL/AdES exceptions unless translation was forced to use unaligned host accesses. Key MIPS translation blocks on the linux-user unaligned policy, implement sysmips(MIPS_FIXADE) to toggle that policy, and raise SIGBUS/BUS_ADRALN when fixups are disabled. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: James Hilliard <james.hilliard1@gmail.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20260520172313.23777-4-philmd@linaro.org>
23 lines
518 B
C
23 lines
518 B
C
#ifndef MIPS_TARGET_SYSCALL_H
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#define MIPS_TARGET_SYSCALL_H
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#define UNAME_MACHINE "mips"
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#define UNAME_MINIMUM_RELEASE "2.6.32"
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#define TARGET_CLONE_BACKWARDS
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#define TARGET_MCL_CURRENT 1
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#define TARGET_MCL_FUTURE 2
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#define TARGET_MCL_ONFAULT 4
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#define TARGET_FORCE_SHMLBA
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#define TARGET_SYSMIPS_FLUSH_CACHE 3
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#define TARGET_SYSMIPS_FIXADE 7
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#define TARGET_SYSMIPS_ATOMIC_SET 2001
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static inline abi_ulong target_shmlba(CPUMIPSState *env)
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{
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return 0x40000;
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}
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#endif /* MIPS_TARGET_SYSCALL_H */
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