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a7aad9aa MK |
1 | /* Target-dependent code for the HP PA-RISC architecture. |
2 | ||
4c38e0a4 | 3 | Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
9b254dd1 | 4 | Free Software Foundation, Inc. |
3ff7cf9e JB |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
3ff7cf9e JB |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
3ff7cf9e JB |
20 | |
21 | #ifndef HPPA_TDEP_H | |
22 | #define HPPA_TDEP_H | |
23 | ||
f626a069 | 24 | struct trad_frame_saved_reg; |
acf86d54 RC |
25 | struct objfile; |
26 | struct so_list; | |
f626a069 | 27 | |
7157eed4 | 28 | /* Register numbers of various important registers. */ |
34f75cc1 | 29 | |
c481d1ca MK |
30 | enum hppa_regnum |
31 | { | |
34f75cc1 RC |
32 | HPPA_R0_REGNUM = 0, /* Doesn't actually exist, used as base for |
33 | other r registers. */ | |
c481d1ca | 34 | HPPA_R1_REGNUM = 1, |
34f75cc1 RC |
35 | HPPA_FLAGS_REGNUM = 0, /* Various status flags */ |
36 | HPPA_RP_REGNUM = 2, /* return pointer */ | |
37 | HPPA_FP_REGNUM = 3, /* The ABI's frame pointer, when used */ | |
38ca4e0c MK |
38 | HPPA_DP_REGNUM = 27, |
39 | HPPA_RET0_REGNUM = 28, | |
40 | HPPA_RET1_REGNUM = 29, | |
34f75cc1 | 41 | HPPA_SP_REGNUM = 30, /* Stack pointer. */ |
8d1b517b | 42 | HPPA_R31_REGNUM = 31, |
34f75cc1 RC |
43 | HPPA_SAR_REGNUM = 32, /* Shift Amount Register */ |
44 | HPPA_IPSW_REGNUM = 41, /* Interrupt Processor Status Word */ | |
45 | HPPA_PCOQ_HEAD_REGNUM = 33, /* instruction offset queue head */ | |
46 | HPPA_PCSQ_HEAD_REGNUM = 34, /* instruction space queue head */ | |
47 | HPPA_PCOQ_TAIL_REGNUM = 35, /* instruction offset queue tail */ | |
48 | HPPA_PCSQ_TAIL_REGNUM = 36, /* instruction space queue tail */ | |
49 | HPPA_EIEM_REGNUM = 37, /* External Interrupt Enable Mask */ | |
50 | HPPA_IIR_REGNUM = 38, /* Interrupt Instruction Register */ | |
51 | HPPA_ISR_REGNUM = 39, /* Interrupt Space Register */ | |
52 | HPPA_IOR_REGNUM = 40, /* Interrupt Offset Register */ | |
53 | HPPA_SR4_REGNUM = 43, /* space register 4 */ | |
54 | HPPA_RCR_REGNUM = 51, /* Recover Counter (also known as cr0) */ | |
55 | HPPA_PID0_REGNUM = 52, /* Protection ID */ | |
56 | HPPA_PID1_REGNUM = 53, /* Protection ID */ | |
57 | HPPA_PID2_REGNUM = 55, /* Protection ID */ | |
58 | HPPA_PID3_REGNUM = 56, /* Protection ID */ | |
59 | HPPA_CCR_REGNUM = 54, /* Coprocessor Configuration Register */ | |
60 | HPPA_TR0_REGNUM = 57, /* Temporary Registers (cr24 -> cr31) */ | |
d037d088 | 61 | HPPA_CR26_REGNUM = 59, |
34f75cc1 RC |
62 | HPPA_CR27_REGNUM = 60, /* Base register for thread-local storage, cr27 */ |
63 | HPPA_FP0_REGNUM = 64, /* First floating-point. */ | |
64 | HPPA_FP4_REGNUM = 72, | |
38ca4e0c | 65 | HPPA64_FP4_REGNUM = 68, |
20776c7d | 66 | HPPA_FP31R_REGNUM = 127, /* Last floating-point. */ |
34f75cc1 RC |
67 | |
68 | HPPA_ARG0_REGNUM = 26, /* The first argument of a callee. */ | |
69 | HPPA_ARG1_REGNUM = 25, /* The second argument of a callee. */ | |
70 | HPPA_ARG2_REGNUM = 24, /* The third argument of a callee. */ | |
71 | HPPA_ARG3_REGNUM = 23 /* The fourth argument of a callee. */ | |
72 | }; | |
73 | ||
d275c051 MK |
74 | /* Instruction size. */ |
75 | #define HPPA_INSN_SIZE 4 | |
76 | ||
3ff7cf9e JB |
77 | /* Target-dependent structure in gdbarch. */ |
78 | struct gdbarch_tdep | |
79 | { | |
80 | /* The number of bytes in an address. For now, this field is designed | |
81 | to allow us to differentiate hppa32 from hppa64 targets. */ | |
82 | int bytes_per_address; | |
fdd72f95 RC |
83 | |
84 | /* Is this an ELF target? This can be 64-bit HP-UX, or a 32/64-bit GNU/Linux | |
85 | system. */ | |
86 | int is_elf; | |
d49771ef RC |
87 | |
88 | /* Given a function address, try to find the global pointer for the | |
89 | corresponding shared object. */ | |
e38c262f | 90 | CORE_ADDR (*find_global_pointer) (struct gdbarch *, struct value *); |
84674fe1 AC |
91 | |
92 | /* For shared libraries, each call goes through a small piece of | |
93 | trampoline code in the ".plt", or equivalent, section. | |
94 | IN_SOLIB_CALL_TRAMPOLINE evaluates to nonzero if we are currently | |
95 | stopped in one of these. */ | |
e17a4113 UW |
96 | int (*in_solib_call_trampoline) (struct gdbarch *gdbarch, |
97 | CORE_ADDR pc, char *name); | |
f77a2124 RC |
98 | |
99 | /* For targets that support multiple spaces, we may have additional stubs | |
100 | in the return path. These stubs are internal to the ABI, and users are | |
101 | not interested in them. If we detect that we are returning to a stub, | |
102 | adjust the pc to the real caller. This improves the behavior of commands | |
103 | that traverse frames such as "up" and "finish". */ | |
227e86ad | 104 | void (*unwind_adjust_stub) (struct frame_info *this_frame, CORE_ADDR base, |
f77a2124 RC |
105 | struct trad_frame_saved_reg *saved_regs); |
106 | ||
acf86d54 RC |
107 | /* These are solib-dependent methods. They are really HPUX only, but |
108 | we don't have a HPUX-specific tdep vector at the moment. */ | |
109 | CORE_ADDR (*solib_thread_start_addr) (struct so_list *so); | |
110 | CORE_ADDR (*solib_get_got_by_pc) (CORE_ADDR addr); | |
111 | CORE_ADDR (*solib_get_solib_by_pc) (CORE_ADDR addr); | |
112 | CORE_ADDR (*solib_get_text_base) (struct objfile *objfile); | |
3ff7cf9e JB |
113 | }; |
114 | ||
7c46b9fb RC |
115 | /* |
116 | * Unwind table and descriptor. | |
117 | */ | |
118 | ||
119 | struct unwind_table_entry | |
120 | { | |
121 | CORE_ADDR region_start; | |
122 | CORE_ADDR region_end; | |
123 | ||
124 | unsigned int Cannot_unwind:1; /* 0 */ | |
125 | unsigned int Millicode:1; /* 1 */ | |
126 | unsigned int Millicode_save_sr0:1; /* 2 */ | |
127 | unsigned int Region_description:2; /* 3..4 */ | |
6fcecea0 | 128 | unsigned int reserved:1; /* 5 */ |
7c46b9fb RC |
129 | unsigned int Entry_SR:1; /* 6 */ |
130 | unsigned int Entry_FR:4; /* number saved *//* 7..10 */ | |
131 | unsigned int Entry_GR:5; /* number saved *//* 11..15 */ | |
132 | unsigned int Args_stored:1; /* 16 */ | |
133 | unsigned int Variable_Frame:1; /* 17 */ | |
134 | unsigned int Separate_Package_Body:1; /* 18 */ | |
135 | unsigned int Frame_Extension_Millicode:1; /* 19 */ | |
136 | unsigned int Stack_Overflow_Check:1; /* 20 */ | |
137 | unsigned int Two_Instruction_SP_Increment:1; /* 21 */ | |
6fcecea0 | 138 | unsigned int sr4export:1; /* 22 */ |
7c46b9fb RC |
139 | unsigned int cxx_info:1; /* 23 */ |
140 | unsigned int cxx_try_catch:1; /* 24 */ | |
141 | unsigned int sched_entry_seq:1; /* 25 */ | |
6fcecea0 | 142 | unsigned int reserved1:1; /* 26 */ |
7c46b9fb RC |
143 | unsigned int Save_SP:1; /* 27 */ |
144 | unsigned int Save_RP:1; /* 28 */ | |
145 | unsigned int Save_MRP_in_frame:1; /* 29 */ | |
6fcecea0 | 146 | unsigned int save_r19:1; /* 30 */ |
7c46b9fb RC |
147 | unsigned int Cleanup_defined:1; /* 31 */ |
148 | ||
149 | unsigned int MPE_XL_interrupt_marker:1; /* 0 */ | |
150 | unsigned int HP_UX_interrupt_marker:1; /* 1 */ | |
151 | unsigned int Large_frame:1; /* 2 */ | |
6fcecea0 RC |
152 | unsigned int alloca_frame:1; /* 3 */ |
153 | unsigned int reserved2:1; /* 4 */ | |
7c46b9fb RC |
154 | unsigned int Total_frame_size:27; /* 5..31 */ |
155 | ||
156 | /* This is *NOT* part of an actual unwind_descriptor in an object | |
157 | file. It is *ONLY* part of the "internalized" descriptors that | |
158 | we create from those in a file. | |
159 | */ | |
160 | struct | |
161 | { | |
162 | unsigned int stub_type:4; /* 0..3 */ | |
163 | unsigned int padding:28; /* 4..31 */ | |
164 | } | |
165 | stub_unwind; | |
166 | }; | |
167 | ||
168 | /* HP linkers also generate unwinds for various linker-generated stubs. | |
169 | GDB reads in the stubs from the $UNWIND_END$ subspace, then | |
170 | "converts" them into normal unwind entries using some of the reserved | |
171 | fields to store the stub type. */ | |
172 | ||
173 | /* The gaps represent linker stubs used in MPE and space for future | |
174 | expansion. */ | |
175 | enum unwind_stub_types | |
176 | { | |
177 | LONG_BRANCH = 1, | |
178 | PARAMETER_RELOCATION = 2, | |
179 | EXPORT = 10, | |
180 | IMPORT = 11, | |
181 | IMPORT_SHLIB = 12, | |
182 | }; | |
183 | ||
abc485a1 RC |
184 | struct unwind_table_entry *find_unwind_entry (CORE_ADDR); |
185 | ||
7c46b9fb RC |
186 | /* We use the objfile->obj_private pointer for two things: |
187 | * 1. An unwind table; | |
188 | * | |
189 | * 2. A pointer to any associated shared library object. | |
190 | * | |
191 | * #defines are used to help refer to these objects. | |
192 | */ | |
193 | ||
194 | /* Info about the unwind table associated with an object file. | |
195 | * This is hung off of the "objfile->obj_private" pointer, and | |
196 | * is allocated in the objfile's psymbol obstack. This allows | |
197 | * us to have unique unwind info for each executable and shared | |
198 | * library that we are debugging. | |
199 | */ | |
200 | struct hppa_unwind_info | |
201 | { | |
202 | struct unwind_table_entry *table; /* Pointer to unwind info */ | |
203 | struct unwind_table_entry *cache; /* Pointer to last entry we found */ | |
204 | int last; /* Index of last entry */ | |
205 | }; | |
206 | ||
207 | struct hppa_objfile_private | |
208 | { | |
209 | struct hppa_unwind_info *unwind_info; /* a pointer */ | |
210 | struct so_list *so_info; /* a pointer */ | |
211 | CORE_ADDR dp; | |
77d18ded RC |
212 | |
213 | int dummy_call_sequence_reg; | |
214 | CORE_ADDR dummy_call_sequence_addr; | |
7c46b9fb RC |
215 | }; |
216 | ||
217 | extern const struct objfile_data *hppa_objfile_priv_data; | |
218 | ||
abc485a1 RC |
219 | int hppa_get_field (unsigned word, int from, int to); |
220 | int hppa_extract_5_load (unsigned int); | |
221 | unsigned hppa_extract_5R_store (unsigned int); | |
222 | unsigned hppa_extract_5r_store (unsigned int); | |
223 | int hppa_extract_17 (unsigned int); | |
224 | int hppa_extract_21 (unsigned); | |
225 | int hppa_extract_14 (unsigned); | |
3388d7ff | 226 | CORE_ADDR hppa_symbol_address(const char *sym); |
abc485a1 | 227 | |
227e86ad JB |
228 | extern struct value * |
229 | hppa_frame_prev_register_helper (struct frame_info *this_frame, | |
a7aad9aa | 230 | struct trad_frame_saved_reg *saved_regs, |
227e86ad | 231 | int regnum); |
0da28f8a | 232 | |
61a1198a UW |
233 | extern CORE_ADDR hppa_read_pc (struct regcache *regcache); |
234 | extern void hppa_write_pc (struct regcache *regcache, CORE_ADDR pc); | |
cc72850f MK |
235 | extern CORE_ADDR hppa_unwind_pc (struct gdbarch *gdbarch, |
236 | struct frame_info *next_frame); | |
237 | ||
ff644745 JB |
238 | extern struct minimal_symbol * |
239 | hppa_lookup_stub_minimal_symbol (const char *name, | |
240 | enum unwind_stub_types stub_type); | |
241 | ||
77d18ded RC |
242 | extern struct hppa_objfile_private * |
243 | hppa_init_objfile_priv_data (struct objfile *objfile); | |
244 | ||
e17a4113 UW |
245 | extern int hppa_in_solib_call_trampoline (struct gdbarch *gdbarch, |
246 | CORE_ADDR pc, char *name); | |
52f729a7 | 247 | extern CORE_ADDR hppa_skip_trampoline_code (struct frame_info *, CORE_ADDR pc); |
34f55018 MK |
248 | |
249 | #endif /* hppa-tdep.h */ |