1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
#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
bool ns; /* Use non-secure CPREG bank on access */
bool cpacr_fpen; /* FP enabled via CPACR.FPEN */
bool vfp_enabled; /* FP enabled via FPSCR.EN */
int vec_len;
int vec_stride;
/* Immediate value in AArch32 SVC insn; must be set if is_jmp == DISAS_SWI
* so that top level loop can generate correct syndrome information.
*/
uint32_t svc_imm;
int aarch64;
int current_el;
GHashTable *cp_regs;
uint64_t features; /* CPU features bits */
/* Because unallocated encodings generate different exception syndrome
* information from traps due to FP being disabled, we can't do a single
* "is fp access disabled" check at a high level in the decode tree.
* To help in catching bugs where the access check was forgotten in some
* code path, we set this flag when the access check is done, and assert
* that it is set at the point where we actually touch the FP regs.
*/
bool fp_access_checked;
/* ARMv8 single-step state (this is distinct from the QEMU gdbstub
* single-step support).
*/
bool ss_active;
bool pstate_ss;
/* True if the insn just emitted was a load-exclusive instruction
* (necessary for syndrome information for single step exceptions),
* ie A64 LDX*, LDAX*, A32/T32 LDREX*, LDAEX*.
*/
bool is_ldex;
/* True if a single-step exception will be taken to the current EL */
bool ss_same_el;
/* Bottom two bits of XScale c15_cpar coprocessor access control reg */
int c15_cpar;
#define TMP_A64_MAX 16
int tmp_a64_count;
TCGv_i64 tmp_a64[TMP_A64_MAX];
} DisasContext;
extern TCGv_ptr cpu_env;
static inline int arm_dc_feature(DisasContext *dc, int feature)
{
return (dc->features & (1ULL << feature)) != 0;
}
static inline int get_mem_index(DisasContext *s)
{
return s->current_el;
}
/* target-specific extra values for is_jmp */
/* These instructions trap after executing, so the A32/T32 decoder must
* defer them until after the conditional execution state has been updated.
* WFI also needs special handling when single-stepping.
*/
#define DISAS_WFI 4
#define DISAS_SWI 5
/* For instructions which unconditionally cause an exception we can skip
* emitting unreachable code at the end of the TB in the A64 decoder
*/
#define DISAS_EXC 6
/* WFE */
#define DISAS_WFE 7
#define DISAS_HVC 8
#define DISAS_SMC 9
#ifdef TARGET_AARCH64
void a64_translate_init(void);
void gen_intermediate_code_internal_a64(ARMCPU *cpu,
TranslationBlock *tb,
bool search_pc);
void gen_a64_set_pc_im(uint64_t val);
void aarch64_cpu_dump_state(CPUState *cs, FILE *f,
fprintf_function cpu_fprintf, int flags);
#else
static inline void a64_translate_init(void)
{
}
static inline void gen_intermediate_code_internal_a64(ARMCPU *cpu,
TranslationBlock *tb,
bool search_pc)
{
}
static inline void gen_a64_set_pc_im(uint64_t val)
{
}
static inline void aarch64_cpu_dump_state(CPUState *cs, FILE *f,
fprintf_function cpu_fprintf,
int flags)
{
}
#endif
void arm_gen_test_cc(int cc, int label);
#endif /* TARGET_ARM_TRANSLATE_H */
|