nbd: Don't use *_to_cpup() functions
[qemu.git] / target-arm / translate.h
1 #ifndef TARGET_ARM_TRANSLATE_H
2 #define TARGET_ARM_TRANSLATE_H
3
4 /* internal defines */
5 typedef struct DisasContext {
6 target_ulong pc;
7 uint32_t insn;
8 int is_jmp;
9 /* Nonzero if this instruction has been conditionally skipped. */
10 int condjmp;
11 /* The label that will be jumped to when the instruction is skipped. */
12 TCGLabel *condlabel;
13 /* Thumb-2 conditional execution bits. */
14 int condexec_mask;
15 int condexec_cond;
16 struct TranslationBlock *tb;
17 int singlestep_enabled;
18 int thumb;
19 int sctlr_b;
20 TCGMemOp be_data;
21 #if !defined(CONFIG_USER_ONLY)
22 int user;
23 #endif
24 ARMMMUIdx mmu_idx; /* MMU index to use for normal loads/stores */
25 bool ns; /* Use non-secure CPREG bank on access */
26 int fp_excp_el; /* FP exception EL or 0 if enabled */
27 /* Flag indicating that exceptions from secure mode are routed to EL3. */
28 bool secure_routed_to_el3;
29 bool vfp_enabled; /* FP enabled via FPSCR.EN */
30 int vec_len;
31 int vec_stride;
32 /* Immediate value in AArch32 SVC insn; must be set if is_jmp == DISAS_SWI
33 * so that top level loop can generate correct syndrome information.
34 */
35 uint32_t svc_imm;
36 int aarch64;
37 int current_el;
38 GHashTable *cp_regs;
39 uint64_t features; /* CPU features bits */
40 /* Because unallocated encodings generate different exception syndrome
41 * information from traps due to FP being disabled, we can't do a single
42 * "is fp access disabled" check at a high level in the decode tree.
43 * To help in catching bugs where the access check was forgotten in some
44 * code path, we set this flag when the access check is done, and assert
45 * that it is set at the point where we actually touch the FP regs.
46 */
47 bool fp_access_checked;
48 /* ARMv8 single-step state (this is distinct from the QEMU gdbstub
49 * single-step support).
50 */
51 bool ss_active;
52 bool pstate_ss;
53 /* True if the insn just emitted was a load-exclusive instruction
54 * (necessary for syndrome information for single step exceptions),
55 * ie A64 LDX*, LDAX*, A32/T32 LDREX*, LDAEX*.
56 */
57 bool is_ldex;
58 /* True if a single-step exception will be taken to the current EL */
59 bool ss_same_el;
60 /* Bottom two bits of XScale c15_cpar coprocessor access control reg */
61 int c15_cpar;
62 /* TCG op index of the current insn_start. */
63 int insn_start_idx;
64 #define TMP_A64_MAX 16
65 int tmp_a64_count;
66 TCGv_i64 tmp_a64[TMP_A64_MAX];
67 } DisasContext;
68
69 typedef struct DisasCompare {
70 TCGCond cond;
71 TCGv_i32 value;
72 bool value_global;
73 } DisasCompare;
74
75 /* Share the TCG temporaries common between 32 and 64 bit modes. */
76 extern TCGv_env cpu_env;
77 extern TCGv_i32 cpu_NF, cpu_ZF, cpu_CF, cpu_VF;
78 extern TCGv_i64 cpu_exclusive_addr;
79 extern TCGv_i64 cpu_exclusive_val;
80 #ifdef CONFIG_USER_ONLY
81 extern TCGv_i64 cpu_exclusive_test;
82 extern TCGv_i32 cpu_exclusive_info;
83 #endif
84
85 static inline int arm_dc_feature(DisasContext *dc, int feature)
86 {
87 return (dc->features & (1ULL << feature)) != 0;
88 }
89
90 static inline int get_mem_index(DisasContext *s)
91 {
92 return s->mmu_idx;
93 }
94
95 /* Function used to determine the target exception EL when otherwise not known
96 * or default.
97 */
98 static inline int default_exception_el(DisasContext *s)
99 {
100 /* If we are coming from secure EL0 in a system with a 32-bit EL3, then
101 * there is no secure EL1, so we route exceptions to EL3. Otherwise,
102 * exceptions can only be routed to ELs above 1, so we target the higher of
103 * 1 or the current EL.
104 */
105 return (s->mmu_idx == ARMMMUIdx_S1SE0 && s->secure_routed_to_el3)
106 ? 3 : MAX(1, s->current_el);
107 }
108
109 /* target-specific extra values for is_jmp */
110 /* These instructions trap after executing, so the A32/T32 decoder must
111 * defer them until after the conditional execution state has been updated.
112 * WFI also needs special handling when single-stepping.
113 */
114 #define DISAS_WFI 4
115 #define DISAS_SWI 5
116 /* For instructions which unconditionally cause an exception we can skip
117 * emitting unreachable code at the end of the TB in the A64 decoder
118 */
119 #define DISAS_EXC 6
120 /* WFE */
121 #define DISAS_WFE 7
122 #define DISAS_HVC 8
123 #define DISAS_SMC 9
124 #define DISAS_YIELD 10
125
126 #ifdef TARGET_AARCH64
127 void a64_translate_init(void);
128 void gen_intermediate_code_a64(ARMCPU *cpu, TranslationBlock *tb);
129 void gen_a64_set_pc_im(uint64_t val);
130 void aarch64_cpu_dump_state(CPUState *cs, FILE *f,
131 fprintf_function cpu_fprintf, int flags);
132 #else
133 static inline void a64_translate_init(void)
134 {
135 }
136
137 static inline void gen_intermediate_code_a64(ARMCPU *cpu, TranslationBlock *tb)
138 {
139 }
140
141 static inline void gen_a64_set_pc_im(uint64_t val)
142 {
143 }
144
145 static inline void aarch64_cpu_dump_state(CPUState *cs, FILE *f,
146 fprintf_function cpu_fprintf,
147 int flags)
148 {
149 }
150 #endif
151
152 void arm_test_cc(DisasCompare *cmp, int cc);
153 void arm_free_cc(DisasCompare *cmp);
154 void arm_jump_cc(DisasCompare *cmp, TCGLabel *label);
155 void arm_gen_test_cc(int cc, TCGLabel *label);
156
157 #endif /* TARGET_ARM_TRANSLATE_H */