Commit | Line | Data |
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c0e8c252 | 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
d7bd68ca | 2 | |
61baf725 | 3 | Copyright (C) 1998-2017 Free Software Foundation, Inc. |
c0e8c252 AC |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c0e8c252 AC |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c0e8c252 AC |
19 | |
20 | #ifndef GDBARCH_UTILS_H | |
21 | #define GDBARCH_UTILS_H | |
22 | ||
da3331ec AC |
23 | struct gdbarch; |
24 | struct frame_info; | |
25 | struct minimal_symbol; | |
26 | struct type; | |
27 | struct gdbarch_info; | |
b41c5a85 | 28 | struct dwarf2_frame_state; |
da3331ec | 29 | |
04180708 YQ |
30 | template <size_t bp_size, const gdb_byte *break_insn> |
31 | struct bp_manipulation | |
32 | { | |
33 | static int | |
34 | kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr) | |
35 | { | |
36 | return bp_size; | |
22f13eb8 | 37 | } |
598cc9dc | 38 | |
04180708 YQ |
39 | static const gdb_byte * |
40 | bp_from_kind (struct gdbarch *gdbarch, int kind, int *size) | |
41 | { | |
42 | *size = kind; | |
43 | return break_insn; | |
22f13eb8 | 44 | } |
04180708 YQ |
45 | }; |
46 | ||
47 | template <size_t bp_size, | |
48 | const gdb_byte *break_insn_little, | |
49 | const gdb_byte *break_insn_big> | |
50 | struct bp_manipulation_endian | |
51 | { | |
52 | static int | |
53 | kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr) | |
54 | { | |
55 | return bp_size; | |
56 | } | |
57 | ||
58 | static const gdb_byte * | |
59 | bp_from_kind (struct gdbarch *gdbarch, int kind, int *size) | |
60 | { | |
61 | *size = kind; | |
62 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) | |
63 | return break_insn_big; | |
64 | else | |
65 | return break_insn_little; | |
66 | } | |
67 | }; | |
68 | ||
69 | #define BP_MANIPULATION(BREAK_INSN) \ | |
70 | bp_manipulation<sizeof (BREAK_INSN), BREAK_INSN> | |
71 | ||
72 | #define BP_MANIPULATION_ENDIAN(BREAK_INSN_LITTLE, BREAK_INSN_BIG) \ | |
73 | bp_manipulation_endian<sizeof (BREAK_INSN_LITTLE), \ | |
74 | BREAK_INSN_LITTLE, BREAK_INSN_BIG> | |
d19280ad | 75 | |
237fc4c9 PA |
76 | /* An implementation of gdbarch_displaced_step_copy_insn for |
77 | processors that don't need to modify the instruction before | |
78 | single-stepping the displaced copy. | |
79 | ||
80 | Simply copy gdbarch_max_insn_length (ARCH) bytes from FROM to TO. | |
81 | The closure is an array of that many bytes containing the | |
82 | instruction's bytes, allocated with xmalloc. */ | |
83 | extern struct displaced_step_closure * | |
84 | simple_displaced_step_copy_insn (struct gdbarch *gdbarch, | |
85 | CORE_ADDR from, CORE_ADDR to, | |
86 | struct regcache *regs); | |
87 | ||
99e40580 UW |
88 | /* Default implementation of gdbarch_displaced_hw_singlestep. */ |
89 | extern int | |
3e43a32a MS |
90 | default_displaced_step_hw_singlestep (struct gdbarch *, |
91 | struct displaced_step_closure *); | |
99e40580 | 92 | |
237fc4c9 PA |
93 | /* Possible value for gdbarch_displaced_step_location: |
94 | Place displaced instructions at the program's entry point, | |
95 | leaving space for inferior function call return breakpoints. */ | |
96 | extern CORE_ADDR displaced_step_at_entry_point (struct gdbarch *gdbarch); | |
97 | ||
0e2de366 | 98 | /* The only possible cases for inner_than. */ |
3339cf8b AC |
99 | extern int core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs); |
100 | extern int core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs); | |
101 | ||
e2d0e7eb | 102 | /* Identity functions on a CORE_ADDR. Just return the "addr". */ |
f517ea4e | 103 | |
24568a2c | 104 | extern CORE_ADDR core_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr); |
e2d0e7eb | 105 | extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity; |
f517ea4e | 106 | |
0e2de366 | 107 | /* No-op conversion of reg to regnum. */ |
88c72b7d | 108 | |
d3f73121 | 109 | extern int no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg); |
88c72b7d | 110 | |
0e2de366 | 111 | /* Do nothing version of coff_make_msymbol_special. */ |
a2cf933a EZ |
112 | |
113 | void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym); | |
114 | ||
3e29f34a MR |
115 | /* Do nothing default implementation of gdbarch_make_symbol_special. */ |
116 | ||
117 | void default_make_symbol_special (struct symbol *sym, struct objfile *objfile); | |
118 | ||
119 | /* Do nothing default implementation of gdbarch_adjust_dwarf2_addr. */ | |
120 | ||
121 | CORE_ADDR default_adjust_dwarf2_addr (CORE_ADDR pc); | |
122 | ||
123 | /* Do nothing default implementation of gdbarch_adjust_dwarf2_line. */ | |
124 | ||
125 | CORE_ADDR default_adjust_dwarf2_line (CORE_ADDR addr, int rel); | |
126 | ||
b41c5a85 JW |
127 | /* Default DWARF vendor CFI handler. */ |
128 | ||
129 | bool default_execute_dwarf_cfa_vendor_op (struct gdbarch *gdbarch, gdb_byte op, | |
130 | struct dwarf2_frame_state *fs); | |
131 | ||
01fb7433 | 132 | /* Version of cannot_fetch_register() / cannot_store_register() that |
0e2de366 | 133 | always fails. */ |
01fb7433 | 134 | |
64a3914f | 135 | int cannot_register_not (struct gdbarch *gdbarch, int regnum); |
01fb7433 | 136 | |
39d4ef09 | 137 | /* Legacy version of target_virtual_frame_pointer(). Assumes that |
064f5156 | 138 | there is an gdbarch_deprecated_fp_regnum and that it is the same, cooked or |
0ba6dca9 | 139 | raw. */ |
39d4ef09 AC |
140 | |
141 | extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer; | |
142 | ||
9b790ce7 UW |
143 | /* Default implementation of gdbarch_floatformat_for_type. */ |
144 | extern const struct floatformat ** | |
145 | default_floatformat_for_type (struct gdbarch *gdbarch, | |
146 | const char *name, int len); | |
147 | ||
52f729a7 UW |
148 | extern CORE_ADDR generic_skip_trampoline_code (struct frame_info *frame, |
149 | CORE_ADDR pc); | |
bdcd319a | 150 | |
4c8c40e6 MK |
151 | extern CORE_ADDR generic_skip_solib_resolver (struct gdbarch *gdbarch, |
152 | CORE_ADDR pc); | |
dea0c52f | 153 | |
e17a4113 | 154 | extern int generic_in_solib_return_trampoline (struct gdbarch *gdbarch, |
2c02bd72 | 155 | CORE_ADDR pc, const char *name); |
d50355b6 | 156 | |
c9cf6e20 MG |
157 | extern int generic_stack_frame_destroyed_p (struct gdbarch *gdbarch, |
158 | CORE_ADDR pc); | |
c12260ac | 159 | |
7eb89530 YQ |
160 | extern int default_code_of_frame_writable (struct gdbarch *gdbarch, |
161 | struct frame_info *frame); | |
162 | ||
a1f4a1b6 | 163 | /* By default, registers are not convertible. */ |
76a8ddb9 UW |
164 | extern int generic_convert_register_p (struct gdbarch *gdbarch, int regnum, |
165 | struct type *type); | |
13d01224 | 166 | |
192cb3d4 MK |
167 | extern int default_stabs_argument_has_addr (struct gdbarch *gdbarch, |
168 | struct type *type); | |
169 | ||
3ca64954 RC |
170 | extern int generic_instruction_nullified (struct gdbarch *gdbarch, |
171 | struct regcache *regcache); | |
172 | ||
123dc839 DJ |
173 | int default_remote_register_number (struct gdbarch *gdbarch, |
174 | int regno); | |
175 | ||
4182591f AC |
176 | /* For compatibility with older architectures, returns |
177 | (LEGACY_SIM_REGNO_IGNORE) when the register doesn't have a valid | |
178 | name. */ | |
179 | ||
e7faf938 | 180 | extern int legacy_register_sim_regno (struct gdbarch *gdbarch, int regnum); |
4182591f | 181 | |
b6d373df DJ |
182 | /* Return the selected byte order, or BFD_ENDIAN_UNKNOWN if no byte |
183 | order was explicitly selected. */ | |
184 | extern enum bfd_endian selected_byte_order (void); | |
185 | ||
a8cf2722 AC |
186 | /* Return the selected architecture's name, or NULL if no architecture |
187 | was explicitly selected. */ | |
188 | extern const char *selected_architecture_name (void); | |
189 | ||
fb6ecb0f | 190 | /* Initialize a ``struct info''. Can't use memset(0) since some |
a8cf2722 AC |
191 | default values are not zero. "fill" takes all available |
192 | information and fills in any unspecified fields. */ | |
193 | ||
fb6ecb0f AC |
194 | extern void gdbarch_info_init (struct gdbarch_info *info); |
195 | ||
100bcc3f | 196 | /* Similar to init, but this time fill in the blanks. Information is |
7a107747 DJ |
197 | obtained from the global "set ..." options and explicitly |
198 | initialized INFO fields. */ | |
199 | extern void gdbarch_info_fill (struct gdbarch_info *info); | |
bf922ad9 | 200 | |
2b026650 MK |
201 | /* Return the architecture for ABFD. If no suitable architecture |
202 | could be find, return NULL. */ | |
203 | ||
204 | extern struct gdbarch *gdbarch_from_bfd (bfd *abfd); | |
205 | ||
e17c207e UW |
206 | /* Return "current" architecture. If the target is running, this is the |
207 | architecture of the selected frame. Otherwise, the "current" architecture | |
208 | defaults to the target architecture. | |
209 | ||
210 | This function should normally be called solely by the command interpreter | |
211 | routines to determine the architecture to execute a command in. */ | |
212 | extern struct gdbarch *get_current_arch (void); | |
213 | ||
6c95b8df PA |
214 | extern int default_has_shared_address_space (struct gdbarch *); |
215 | ||
7a697b8d | 216 | extern int default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, |
6b940e6a | 217 | CORE_ADDR addr, char **msg); |
7a697b8d | 218 | |
22f13eb8 YQ |
219 | extern const gdb_byte *default_breakpoint_from_pc (struct gdbarch *gdbarch, |
220 | CORE_ADDR *pcptr, | |
221 | int *lenptr); | |
222 | ||
833b7ab5 YQ |
223 | extern int default_breakpoint_kind_from_current_state (struct gdbarch *gdbarch, |
224 | struct regcache *regcache, | |
225 | CORE_ADDR *pcptr); | |
226 | ||
6710bf39 SS |
227 | extern void default_gen_return_address (struct gdbarch *gdbarch, |
228 | struct agent_expr *ax, | |
229 | struct axs_value *value, | |
230 | CORE_ADDR scope); | |
231 | ||
f870a310 TT |
232 | extern const char *default_auto_charset (void); |
233 | extern const char *default_auto_wide_charset (void); | |
234 | ||
18648a37 YQ |
235 | extern int default_return_in_first_hidden_param_p (struct gdbarch *, |
236 | struct type *); | |
c2170eef MM |
237 | |
238 | extern int default_insn_is_call (struct gdbarch *, CORE_ADDR); | |
239 | extern int default_insn_is_ret (struct gdbarch *, CORE_ADDR); | |
240 | extern int default_insn_is_jump (struct gdbarch *, CORE_ADDR); | |
3437254d PA |
241 | |
242 | /* Do-nothing version of vsyscall_range. Returns false. */ | |
243 | ||
244 | extern int default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range); | |
ae9bb220 PA |
245 | |
246 | /* Default way to advance the PC to the next instruction in order to | |
247 | skip a permanent breakpoint. Increments the PC by the size of a | |
248 | software breakpoint instruction, as determined with | |
249 | gdbarch_breakpoint_from_pc. This matches how the breakpoints | |
250 | module determines whether a breakpoint is permanent. */ | |
251 | extern void default_skip_permanent_breakpoint (struct regcache *regcache); | |
252 | ||
f208eee0 JK |
253 | /* Symbols for gdbarch_infcall_mmap; their Linux PROT_* system |
254 | definitions would be dependent on compilation host. */ | |
255 | #define GDB_MMAP_PROT_READ 0x1 /* Page can be read. */ | |
256 | #define GDB_MMAP_PROT_WRITE 0x2 /* Page can be written. */ | |
257 | #define GDB_MMAP_PROT_EXEC 0x4 /* Page can be executed. */ | |
258 | ||
259 | extern CORE_ADDR default_infcall_mmap (CORE_ADDR size, unsigned prot); | |
7f361056 | 260 | extern void default_infcall_munmap (CORE_ADDR addr, CORE_ADDR size); |
f208eee0 | 261 | extern char *default_gcc_target_options (struct gdbarch *gdbarch); |
ac04f72b | 262 | extern const char *default_gnu_triplet_regexp (struct gdbarch *gdbarch); |
3374165f | 263 | extern int default_addressable_memory_unit_size (struct gdbarch *gdbarch); |
f208eee0 | 264 | |
5f034a78 MK |
265 | extern void default_guess_tracepoint_registers (struct gdbarch *gdbarch, |
266 | struct regcache *regcache, | |
267 | CORE_ADDR addr); | |
268 | ||
39503f82 YQ |
269 | extern int default_print_insn (bfd_vma memaddr, disassemble_info *info); |
270 | ||
46a62268 YQ |
271 | /* Wrapper to gdbarch_skip_prologue, but doesn't throw exception. Catch |
272 | exception thrown from gdbarch_skip_prologue, and return PC. */ | |
273 | ||
274 | extern CORE_ADDR gdbarch_skip_prologue_noexcept (gdbarch *gdbarch, | |
275 | CORE_ADDR pc) noexcept; | |
276 | ||
c0e8c252 | 277 | #endif |