qemu/target-arm/translate.h
Alexander Graf 14ade10f84 target-arm: Add AArch64 translation stub
We should translate AArch64 mode separately from AArch32 mode. In AArch64 mode,
registers look vastly different, instruction encoding is completely different,
basically the system turns into a different machine.

So let's do a simple if() in translate.c to decide whether we can handle the
current code in the legacy AArch32 code or in the new AArch64 code.

So far, the translation always complains about unallocated instructions. There
is no emulator functionality in this patch!

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-11-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-5-git-send-email-john.rigby@linaro.org
[PMM:
 * provide no-op versions of a64 functions ifndef TARGET_AARCH64;
   this lets us avoid #ifdefs in translate.c
 * insert the missing call to disas_a64_insn()
 * stash the insn in the DisasContext rather than reloading it in
   real_unallocated_encoding()
]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-09-10 19:11:28 +01:00

50 lines
1.1 KiB
C

#ifndef TARGET_ARM_TRANSLATE_H
#define TARGET_ARM_TRANSLATE_H
/* internal defines */
typedef struct DisasContext {
target_ulong pc;
uint32_t insn;
int is_jmp;
/* Nonzero if this instruction has been conditionally skipped. */
int condjmp;
/* The label that will be jumped to when the instruction is skipped. */
int condlabel;
/* Thumb-2 conditional execution bits. */
int condexec_mask;
int condexec_cond;
struct TranslationBlock *tb;
int singlestep_enabled;
int thumb;
int bswap_code;
#if !defined(CONFIG_USER_ONLY)
int user;
#endif
int vfp_enabled;
int vec_len;
int vec_stride;
int aarch64;
} DisasContext;
extern TCGv_ptr cpu_env;
#ifdef TARGET_AARCH64
void a64_translate_init(void);
void disas_a64_insn(CPUARMState *env, DisasContext *s);
void gen_a64_set_pc_im(uint64_t val);
#else
static inline void a64_translate_init(void)
{
}
static inline void disas_a64_insn(CPUARMState *env, DisasContext *s)
{
}
static inline void gen_a64_set_pc_im(uint64_t val)
{
}
#endif
#endif /* TARGET_ARM_TRANSLATE_H */