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| author | Richard Henderson <richard.henderson@linaro.org> | 2021-12-27 07:01:27 -0800 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2022-01-06 11:40:52 +0100 |
| commit | 4da06fb306276946e227669bfc4df2077a8fa6c9 (patch) | |
| tree | 5c03601e404ad94039fe33c41a789a8bfec1cf32 /target/sh4/cpu.h | |
| parent | 217d1a5ef887c2013dc7446adff856e795cd8488 (diff) | |
| download | qemu-4da06fb306276946e227669bfc4df2077a8fa6c9.zip qemu-4da06fb306276946e227669bfc4df2077a8fa6c9.tar.gz qemu-4da06fb306276946e227669bfc4df2077a8fa6c9.tar.bz2 | |
target/sh4: Implement prctl_unalign_sigbus
Leave TARGET_ALIGNED_ONLY set, but use the new CPUState
flag to set MO_UNALN for the instructions that the kernel
handles in the unaligned trap.
The Linux kernel does not handle all memory operations: no
floating-point and no MAC.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211227150127.2659293-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'target/sh4/cpu.h')
| -rw-r--r-- | target/sh4/cpu.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/sh4/cpu.h b/target/sh4/cpu.h index 4cfb109..fb9dd9d 100644 --- a/target/sh4/cpu.h +++ b/target/sh4/cpu.h @@ -83,6 +83,7 @@ #define DELAY_SLOT_RTE (1 << 2) #define TB_FLAG_PENDING_MOVCA (1 << 3) +#define TB_FLAG_UNALIGN (1 << 4) #define GUSA_SHIFT 4 #ifdef CONFIG_USER_ONLY @@ -373,6 +374,9 @@ static inline void cpu_get_tb_cpu_state(CPUSH4State *env, target_ulong *pc, | (env->sr & ((1u << SR_MD) | (1u << SR_RB))) /* Bits 29-30 */ | (env->sr & (1u << SR_FD)) /* Bit 15 */ | (env->movcal_backup ? TB_FLAG_PENDING_MOVCA : 0); /* Bit 3 */ +#ifdef CONFIG_USER_ONLY + *flags |= TB_FLAG_UNALIGN * !env_cpu(env)->prctl_unalign_sigbus; +#endif } #endif /* SH4_CPU_H */ |