Commit | Line | Data |
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c0e8c252 | 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
d7bd68ca | 2 | |
618f726f | 3 | Copyright (C) 1998-2016 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; | |
28 | ||
d19280ad YQ |
29 | #define GDBARCH_BREAKPOINT_FROM_PC(ARCH) \ |
30 | static const gdb_byte * \ | |
31 | ARCH##_breakpoint_from_pc (struct gdbarch *gdbarch, \ | |
32 | CORE_ADDR *pcptr, \ | |
33 | int *lenptr) \ | |
34 | { \ | |
35 | int kind = ARCH##_breakpoint_kind_from_pc (gdbarch, pcptr); \ | |
36 | \ | |
37 | return ARCH##_sw_breakpoint_from_kind (gdbarch, kind, lenptr); \ | |
38 | } | |
39 | ||
598cc9dc | 40 | #define GDBARCH_BREAKPOINT_MANIPULATION(ARCH,BREAK_INSN) \ |
cd6c3b4f YQ |
41 | static int \ |
42 | ARCH##_breakpoint_kind_from_pc (struct gdbarch *gdbarch, \ | |
43 | CORE_ADDR *pcptr) \ | |
44 | { \ | |
45 | return sizeof (BREAK_INSN); \ | |
46 | } \ | |
598cc9dc | 47 | static const gdb_byte * \ |
cd6c3b4f YQ |
48 | ARCH##_sw_breakpoint_from_kind (struct gdbarch *gdbarch, \ |
49 | int kind, int *size) \ | |
598cc9dc | 50 | { \ |
cd6c3b4f | 51 | *size = kind; \ |
598cc9dc | 52 | return BREAK_INSN; \ |
cd6c3b4f YQ |
53 | } \ |
54 | GDBARCH_BREAKPOINT_FROM_PC (ARCH) | |
598cc9dc | 55 | |
cd6c3b4f YQ |
56 | #define SET_GDBARCH_BREAKPOINT_MANIPULATION(ARCH) \ |
57 | set_gdbarch_breakpoint_from_pc (gdbarch, ARCH##_breakpoint_from_pc); \ | |
58 | set_gdbarch_breakpoint_kind_from_pc (gdbarch, \ | |
59 | ARCH##_breakpoint_kind_from_pc); \ | |
60 | set_gdbarch_sw_breakpoint_from_kind (gdbarch, \ | |
61 | ARCH##_sw_breakpoint_from_kind) | |
598cc9dc | 62 | |
d19280ad YQ |
63 | #define GDBARCH_BREAKPOINT_MANIPULATION_ENDIAN(ARCH, \ |
64 | LITTLE_BREAK_INSN, \ | |
65 | BIG_BREAK_INSN) \ | |
cd6c3b4f YQ |
66 | static int \ |
67 | ARCH##_breakpoint_kind_from_pc (struct gdbarch *gdbarch, \ | |
68 | CORE_ADDR *pcptr) \ | |
d19280ad YQ |
69 | { \ |
70 | gdb_static_assert (ARRAY_SIZE (LITTLE_BREAK_INSN) \ | |
71 | == ARRAY_SIZE (BIG_BREAK_INSN)); \ | |
cd6c3b4f YQ |
72 | return sizeof (BIG_BREAK_INSN); \ |
73 | } \ | |
74 | static const gdb_byte * \ | |
75 | ARCH##_sw_breakpoint_from_kind (struct gdbarch *gdbarch, \ | |
76 | int kind, int *size) \ | |
77 | { \ | |
78 | *size = kind; \ | |
79 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) \ | |
80 | return BIG_BREAK_INSN; \ | |
81 | else \ | |
82 | return LITTLE_BREAK_INSN; \ | |
83 | } \ | |
84 | GDBARCH_BREAKPOINT_FROM_PC (ARCH) | |
d19280ad | 85 | |
237fc4c9 PA |
86 | /* An implementation of gdbarch_displaced_step_copy_insn for |
87 | processors that don't need to modify the instruction before | |
88 | single-stepping the displaced copy. | |
89 | ||
90 | Simply copy gdbarch_max_insn_length (ARCH) bytes from FROM to TO. | |
91 | The closure is an array of that many bytes containing the | |
92 | instruction's bytes, allocated with xmalloc. */ | |
93 | extern struct displaced_step_closure * | |
94 | simple_displaced_step_copy_insn (struct gdbarch *gdbarch, | |
95 | CORE_ADDR from, CORE_ADDR to, | |
96 | struct regcache *regs); | |
97 | ||
98 | /* Simple implementation of gdbarch_displaced_step_free_closure: Call | |
99 | xfree. | |
100 | This is appropriate for use with simple_displaced_step_copy_insn. */ | |
101 | extern void | |
102 | simple_displaced_step_free_closure (struct gdbarch *gdbarch, | |
103 | struct displaced_step_closure *closure); | |
104 | ||
99e40580 UW |
105 | /* Default implementation of gdbarch_displaced_hw_singlestep. */ |
106 | extern int | |
3e43a32a MS |
107 | default_displaced_step_hw_singlestep (struct gdbarch *, |
108 | struct displaced_step_closure *); | |
99e40580 | 109 | |
237fc4c9 PA |
110 | /* Possible value for gdbarch_displaced_step_location: |
111 | Place displaced instructions at the program's entry point, | |
112 | leaving space for inferior function call return breakpoints. */ | |
113 | extern CORE_ADDR displaced_step_at_entry_point (struct gdbarch *gdbarch); | |
114 | ||
0e2de366 | 115 | /* The only possible cases for inner_than. */ |
3339cf8b AC |
116 | extern int core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs); |
117 | extern int core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs); | |
118 | ||
e2d0e7eb | 119 | /* Identity functions on a CORE_ADDR. Just return the "addr". */ |
f517ea4e | 120 | |
24568a2c | 121 | extern CORE_ADDR core_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr); |
e2d0e7eb | 122 | extern gdbarch_convert_from_func_ptr_addr_ftype convert_from_func_ptr_addr_identity; |
f517ea4e | 123 | |
0e2de366 | 124 | /* No-op conversion of reg to regnum. */ |
88c72b7d | 125 | |
d3f73121 | 126 | extern int no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg); |
88c72b7d | 127 | |
0e2de366 | 128 | /* Do nothing version of coff_make_msymbol_special. */ |
a2cf933a EZ |
129 | |
130 | void default_coff_make_msymbol_special (int val, struct minimal_symbol *msym); | |
131 | ||
3e29f34a MR |
132 | /* Do nothing default implementation of gdbarch_make_symbol_special. */ |
133 | ||
134 | void default_make_symbol_special (struct symbol *sym, struct objfile *objfile); | |
135 | ||
136 | /* Do nothing default implementation of gdbarch_adjust_dwarf2_addr. */ | |
137 | ||
138 | CORE_ADDR default_adjust_dwarf2_addr (CORE_ADDR pc); | |
139 | ||
140 | /* Do nothing default implementation of gdbarch_adjust_dwarf2_line. */ | |
141 | ||
142 | CORE_ADDR default_adjust_dwarf2_line (CORE_ADDR addr, int rel); | |
143 | ||
01fb7433 | 144 | /* Version of cannot_fetch_register() / cannot_store_register() that |
0e2de366 | 145 | always fails. */ |
01fb7433 | 146 | |
64a3914f | 147 | int cannot_register_not (struct gdbarch *gdbarch, int regnum); |
01fb7433 | 148 | |
39d4ef09 | 149 | /* Legacy version of target_virtual_frame_pointer(). Assumes that |
064f5156 | 150 | there is an gdbarch_deprecated_fp_regnum and that it is the same, cooked or |
0ba6dca9 | 151 | raw. */ |
39d4ef09 AC |
152 | |
153 | extern gdbarch_virtual_frame_pointer_ftype legacy_virtual_frame_pointer; | |
154 | ||
9b790ce7 UW |
155 | /* Default implementation of gdbarch_floatformat_for_type. */ |
156 | extern const struct floatformat ** | |
157 | default_floatformat_for_type (struct gdbarch *gdbarch, | |
158 | const char *name, int len); | |
159 | ||
52f729a7 UW |
160 | extern CORE_ADDR generic_skip_trampoline_code (struct frame_info *frame, |
161 | CORE_ADDR pc); | |
bdcd319a | 162 | |
4c8c40e6 MK |
163 | extern CORE_ADDR generic_skip_solib_resolver (struct gdbarch *gdbarch, |
164 | CORE_ADDR pc); | |
dea0c52f | 165 | |
e17a4113 | 166 | extern int generic_in_solib_return_trampoline (struct gdbarch *gdbarch, |
2c02bd72 | 167 | CORE_ADDR pc, const char *name); |
d50355b6 | 168 | |
c9cf6e20 MG |
169 | extern int generic_stack_frame_destroyed_p (struct gdbarch *gdbarch, |
170 | CORE_ADDR pc); | |
c12260ac | 171 | |
7eb89530 YQ |
172 | extern int default_code_of_frame_writable (struct gdbarch *gdbarch, |
173 | struct frame_info *frame); | |
174 | ||
a1f4a1b6 | 175 | /* By default, registers are not convertible. */ |
76a8ddb9 UW |
176 | extern int generic_convert_register_p (struct gdbarch *gdbarch, int regnum, |
177 | struct type *type); | |
13d01224 | 178 | |
192cb3d4 MK |
179 | extern int default_stabs_argument_has_addr (struct gdbarch *gdbarch, |
180 | struct type *type); | |
181 | ||
3ca64954 RC |
182 | extern int generic_instruction_nullified (struct gdbarch *gdbarch, |
183 | struct regcache *regcache); | |
184 | ||
123dc839 DJ |
185 | int default_remote_register_number (struct gdbarch *gdbarch, |
186 | int regno); | |
187 | ||
4182591f AC |
188 | /* For compatibility with older architectures, returns |
189 | (LEGACY_SIM_REGNO_IGNORE) when the register doesn't have a valid | |
190 | name. */ | |
191 | ||
e7faf938 | 192 | extern int legacy_register_sim_regno (struct gdbarch *gdbarch, int regnum); |
4182591f | 193 | |
b6d373df DJ |
194 | /* Return the selected byte order, or BFD_ENDIAN_UNKNOWN if no byte |
195 | order was explicitly selected. */ | |
196 | extern enum bfd_endian selected_byte_order (void); | |
197 | ||
a8cf2722 AC |
198 | /* Return the selected architecture's name, or NULL if no architecture |
199 | was explicitly selected. */ | |
200 | extern const char *selected_architecture_name (void); | |
201 | ||
fb6ecb0f | 202 | /* Initialize a ``struct info''. Can't use memset(0) since some |
a8cf2722 AC |
203 | default values are not zero. "fill" takes all available |
204 | information and fills in any unspecified fields. */ | |
205 | ||
fb6ecb0f AC |
206 | extern void gdbarch_info_init (struct gdbarch_info *info); |
207 | ||
100bcc3f | 208 | /* Similar to init, but this time fill in the blanks. Information is |
7a107747 DJ |
209 | obtained from the global "set ..." options and explicitly |
210 | initialized INFO fields. */ | |
211 | extern void gdbarch_info_fill (struct gdbarch_info *info); | |
bf922ad9 | 212 | |
2b026650 MK |
213 | /* Return the architecture for ABFD. If no suitable architecture |
214 | could be find, return NULL. */ | |
215 | ||
216 | extern struct gdbarch *gdbarch_from_bfd (bfd *abfd); | |
217 | ||
e17c207e UW |
218 | /* Return "current" architecture. If the target is running, this is the |
219 | architecture of the selected frame. Otherwise, the "current" architecture | |
220 | defaults to the target architecture. | |
221 | ||
222 | This function should normally be called solely by the command interpreter | |
223 | routines to determine the architecture to execute a command in. */ | |
224 | extern struct gdbarch *get_current_arch (void); | |
225 | ||
6c95b8df PA |
226 | extern int default_has_shared_address_space (struct gdbarch *); |
227 | ||
7a697b8d | 228 | extern int default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, |
6b940e6a | 229 | CORE_ADDR addr, char **msg); |
7a697b8d | 230 | |
a1dcb23a DJ |
231 | extern void default_remote_breakpoint_from_pc (struct gdbarch *, |
232 | CORE_ADDR *pcptr, int *kindptr); | |
233 | ||
6710bf39 SS |
234 | extern void default_gen_return_address (struct gdbarch *gdbarch, |
235 | struct agent_expr *ax, | |
236 | struct axs_value *value, | |
237 | CORE_ADDR scope); | |
238 | ||
f870a310 TT |
239 | extern const char *default_auto_charset (void); |
240 | extern const char *default_auto_wide_charset (void); | |
241 | ||
18648a37 YQ |
242 | extern int default_return_in_first_hidden_param_p (struct gdbarch *, |
243 | struct type *); | |
c2170eef MM |
244 | |
245 | extern int default_insn_is_call (struct gdbarch *, CORE_ADDR); | |
246 | extern int default_insn_is_ret (struct gdbarch *, CORE_ADDR); | |
247 | extern int default_insn_is_jump (struct gdbarch *, CORE_ADDR); | |
3437254d PA |
248 | |
249 | /* Do-nothing version of vsyscall_range. Returns false. */ | |
250 | ||
251 | extern int default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range); | |
ae9bb220 PA |
252 | |
253 | /* Default way to advance the PC to the next instruction in order to | |
254 | skip a permanent breakpoint. Increments the PC by the size of a | |
255 | software breakpoint instruction, as determined with | |
256 | gdbarch_breakpoint_from_pc. This matches how the breakpoints | |
257 | module determines whether a breakpoint is permanent. */ | |
258 | extern void default_skip_permanent_breakpoint (struct regcache *regcache); | |
259 | ||
f208eee0 JK |
260 | /* Symbols for gdbarch_infcall_mmap; their Linux PROT_* system |
261 | definitions would be dependent on compilation host. */ | |
262 | #define GDB_MMAP_PROT_READ 0x1 /* Page can be read. */ | |
263 | #define GDB_MMAP_PROT_WRITE 0x2 /* Page can be written. */ | |
264 | #define GDB_MMAP_PROT_EXEC 0x4 /* Page can be executed. */ | |
265 | ||
266 | extern CORE_ADDR default_infcall_mmap (CORE_ADDR size, unsigned prot); | |
7f361056 | 267 | extern void default_infcall_munmap (CORE_ADDR addr, CORE_ADDR size); |
f208eee0 | 268 | extern char *default_gcc_target_options (struct gdbarch *gdbarch); |
ac04f72b | 269 | extern const char *default_gnu_triplet_regexp (struct gdbarch *gdbarch); |
3374165f | 270 | extern int default_addressable_memory_unit_size (struct gdbarch *gdbarch); |
f208eee0 | 271 | |
5f034a78 MK |
272 | extern void default_guess_tracepoint_registers (struct gdbarch *gdbarch, |
273 | struct regcache *regcache, | |
274 | CORE_ADDR addr); | |
275 | ||
c0e8c252 | 276 | #endif |