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1 /* Target-dependent code for the HP PA-RISC architecture.
2
3 Copyright (C) 2003-2018 Free Software Foundation, Inc.
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
9 the Free Software Foundation; either version 3 of the License, or
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
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 #ifndef HPPA_TDEP_H
21 #define HPPA_TDEP_H
22
23 struct trad_frame_saved_reg;
24 struct objfile;
25 struct so_list;
26
27 /* Register numbers of various important registers. */
28
29 enum hppa_regnum
30 {
31 HPPA_R0_REGNUM = 0, /* Doesn't actually exist, used as base for
32 other r registers. */
33 HPPA_R1_REGNUM = 1,
34 HPPA_FLAGS_REGNUM = 0, /* Various status flags */
35 HPPA_RP_REGNUM = 2, /* return pointer */
36 HPPA_FP_REGNUM = 3, /* The ABI's frame pointer, when used */
37 HPPA_DP_REGNUM = 27,
38 HPPA_RET0_REGNUM = 28,
39 HPPA_RET1_REGNUM = 29,
40 HPPA_SP_REGNUM = 30, /* Stack pointer. */
41 HPPA_R31_REGNUM = 31,
42 HPPA_SAR_REGNUM = 32, /* Shift Amount Register */
43 HPPA_IPSW_REGNUM = 41, /* Interrupt Processor Status Word */
44 HPPA_PCOQ_HEAD_REGNUM = 33, /* instruction offset queue head */
45 HPPA_PCSQ_HEAD_REGNUM = 34, /* instruction space queue head */
46 HPPA_PCOQ_TAIL_REGNUM = 35, /* instruction offset queue tail */
47 HPPA_PCSQ_TAIL_REGNUM = 36, /* instruction space queue tail */
48 HPPA_EIEM_REGNUM = 37, /* External Interrupt Enable Mask */
49 HPPA_IIR_REGNUM = 38, /* Interrupt Instruction Register */
50 HPPA_ISR_REGNUM = 39, /* Interrupt Space Register */
51 HPPA_IOR_REGNUM = 40, /* Interrupt Offset Register */
52 HPPA_SR4_REGNUM = 43, /* space register 4 */
53 HPPA_SR0_REGNUM = 44, /* space register 0 */
54 HPPA_SR1_REGNUM = 45, /* space register 1 */
55 HPPA_SR2_REGNUM = 46, /* space register 2 */
56 HPPA_SR3_REGNUM = 47, /* space register 3 */
57 HPPA_SR5_REGNUM = 48, /* space register 5 */
58 HPPA_SR6_REGNUM = 49, /* space register 6 */
59 HPPA_SR7_REGNUM = 50, /* space register 7 */
60 HPPA_RCR_REGNUM = 51, /* Recover Counter (also known as cr0) */
61 HPPA_PID0_REGNUM = 52, /* Protection ID */
62 HPPA_PID1_REGNUM = 53, /* Protection ID */
63 HPPA_PID2_REGNUM = 55, /* Protection ID */
64 HPPA_PID3_REGNUM = 56, /* Protection ID */
65 HPPA_CCR_REGNUM = 54, /* Coprocessor Configuration Register */
66 HPPA_TR0_REGNUM = 57, /* Temporary Registers (cr24 -> cr31) */
67 HPPA_CR26_REGNUM = 59,
68 HPPA_CR27_REGNUM = 60, /* Base register for thread-local
69 storage, cr27 */
70 HPPA_FP0_REGNUM = 64, /* First floating-point. */
71 HPPA_FP4_REGNUM = 72,
72 HPPA64_FP4_REGNUM = 68,
73 HPPA_FP31R_REGNUM = 127, /* Last floating-point. */
74
75 HPPA_ARG0_REGNUM = 26, /* The first argument of a callee. */
76 HPPA_ARG1_REGNUM = 25, /* The second argument of a callee. */
77 HPPA_ARG2_REGNUM = 24, /* The third argument of a callee. */
78 HPPA_ARG3_REGNUM = 23 /* The fourth argument of a callee. */
79 };
80
81 /* Instruction size. */
82 #define HPPA_INSN_SIZE 4
83
84 /* Target-dependent structure in gdbarch. */
85 struct gdbarch_tdep
86 {
87 /* The number of bytes in an address. For now, this field is designed
88 to allow us to differentiate hppa32 from hppa64 targets. */
89 int bytes_per_address;
90
91 /* Is this an ELF target? This can be 64-bit HP-UX, or a 32/64-bit GNU/Linux
92 system. */
93 int is_elf;
94
95 /* Given a function address, try to find the global pointer for the
96 corresponding shared object. */
97 CORE_ADDR (*find_global_pointer) (struct gdbarch *, struct value *);
98
99 /* For shared libraries, each call goes through a small piece of
100 trampoline code in the ".plt" section. IN_SOLIB_CALL_TRAMPOLINE
101 evaluates to nonzero if we are currently stopped in one of these. */
102 int (*in_solib_call_trampoline) (struct gdbarch *gdbarch, CORE_ADDR pc);
103
104 /* For targets that support multiple spaces, we may have additional stubs
105 in the return path. These stubs are internal to the ABI, and users are
106 not interested in them. If we detect that we are returning to a stub,
107 adjust the pc to the real caller. This improves the behavior of commands
108 that traverse frames such as "up" and "finish". */
109 void (*unwind_adjust_stub) (struct frame_info *this_frame, CORE_ADDR base,
110 struct trad_frame_saved_reg *saved_regs);
111
112 /* These are solib-dependent methods. They are really HPUX only, but
113 we don't have a HPUX-specific tdep vector at the moment. */
114 CORE_ADDR (*solib_thread_start_addr) (struct so_list *so);
115 CORE_ADDR (*solib_get_got_by_pc) (CORE_ADDR addr);
116 CORE_ADDR (*solib_get_solib_by_pc) (CORE_ADDR addr);
117 CORE_ADDR (*solib_get_text_base) (struct objfile *objfile);
118 };
119
120 /*
121 * Unwind table and descriptor.
122 */
123
124 struct unwind_table_entry
125 {
126 CORE_ADDR region_start;
127 CORE_ADDR region_end;
128
129 unsigned int Cannot_unwind:1; /* 0 */
130 unsigned int Millicode:1; /* 1 */
131 unsigned int Millicode_save_sr0:1; /* 2 */
132 unsigned int Region_description:2; /* 3..4 */
133 unsigned int reserved:1; /* 5 */
134 unsigned int Entry_SR:1; /* 6 */
135 unsigned int Entry_FR:4; /* number saved *//* 7..10 */
136 unsigned int Entry_GR:5; /* number saved *//* 11..15 */
137 unsigned int Args_stored:1; /* 16 */
138 unsigned int Variable_Frame:1; /* 17 */
139 unsigned int Separate_Package_Body:1; /* 18 */
140 unsigned int Frame_Extension_Millicode:1; /* 19 */
141 unsigned int Stack_Overflow_Check:1; /* 20 */
142 unsigned int Two_Instruction_SP_Increment:1; /* 21 */
143 unsigned int sr4export:1; /* 22 */
144 unsigned int cxx_info:1; /* 23 */
145 unsigned int cxx_try_catch:1; /* 24 */
146 unsigned int sched_entry_seq:1; /* 25 */
147 unsigned int reserved1:1; /* 26 */
148 unsigned int Save_SP:1; /* 27 */
149 unsigned int Save_RP:1; /* 28 */
150 unsigned int Save_MRP_in_frame:1; /* 29 */
151 unsigned int save_r19:1; /* 30 */
152 unsigned int Cleanup_defined:1; /* 31 */
153
154 unsigned int MPE_XL_interrupt_marker:1; /* 0 */
155 unsigned int HP_UX_interrupt_marker:1; /* 1 */
156 unsigned int Large_frame:1; /* 2 */
157 unsigned int alloca_frame:1; /* 3 */
158 unsigned int reserved2:1; /* 4 */
159 unsigned int Total_frame_size:27; /* 5..31 */
160
161 /* This is *NOT* part of an actual unwind_descriptor in an object
162 file. It is *ONLY* part of the "internalized" descriptors that
163 we create from those in a file. */
164
165 struct
166 {
167 unsigned int stub_type:4; /* 0..3 */
168 unsigned int padding:28; /* 4..31 */
169 }
170 stub_unwind;
171 };
172
173 /* HP linkers also generate unwinds for various linker-generated stubs.
174 GDB reads in the stubs from the $UNWIND_END$ subspace, then
175 "converts" them into normal unwind entries using some of the reserved
176 fields to store the stub type. */
177
178 /* The gaps represent linker stubs used in MPE and space for future
179 expansion. */
180 enum unwind_stub_types
181 {
182 LONG_BRANCH = 1,
183 PARAMETER_RELOCATION = 2,
184 EXPORT = 10,
185 IMPORT = 11,
186 IMPORT_SHLIB = 12,
187 };
188
189 struct unwind_table_entry *find_unwind_entry (CORE_ADDR);
190
191 int hppa_get_field (unsigned word, int from, int to);
192 int hppa_extract_5_load (unsigned int);
193 unsigned hppa_extract_5R_store (unsigned int);
194 unsigned hppa_extract_5r_store (unsigned int);
195 int hppa_extract_17 (unsigned int);
196 int hppa_extract_21 (unsigned);
197 int hppa_extract_14 (unsigned);
198 CORE_ADDR hppa_symbol_address(const char *sym);
199
200 extern struct value *
201 hppa_frame_prev_register_helper (struct frame_info *this_frame,
202 struct trad_frame_saved_reg *saved_regs,
203 int regnum);
204
205 extern CORE_ADDR hppa_read_pc (struct regcache *regcache);
206 extern void hppa_write_pc (struct regcache *regcache, CORE_ADDR pc);
207 extern CORE_ADDR hppa_unwind_pc (struct gdbarch *gdbarch,
208 struct frame_info *next_frame);
209
210 extern struct bound_minimal_symbol
211 hppa_lookup_stub_minimal_symbol (const char *name,
212 enum unwind_stub_types stub_type);
213
214 extern int hppa_in_solib_call_trampoline (struct gdbarch *gdbarch,
215 CORE_ADDR pc);
216 extern CORE_ADDR hppa_skip_trampoline_code (struct frame_info *, CORE_ADDR pc);
217
218 #endif /* hppa-tdep.h */
gdbarch_tdep::find_global_pointer
CORE_ADDR(* find_global_pointer)(struct gdbarch *, struct value *)
Definition: hppa-tdep.h:97
gdbarch
Definition: gdbarch.c:127
unwind_table_entry::padding
unsigned int padding
Definition: hppa-tdep.h:168
HPPA_EIEM_REGNUM
Definition: hppa-tdep.h:48
gdbarch_tdep::solib_get_solib_by_pc
CORE_ADDR(* solib_get_solib_by_pc)(CORE_ADDR addr)
Definition: hppa-tdep.h:116
unwind_table_entry::sr4export
unsigned int sr4export
Definition: hppa-tdep.h:143
HPPA_FP_REGNUM
Definition: hppa-tdep.h:36
HPPA_CCR_REGNUM
Definition: hppa-tdep.h:65
unwind_table_entry::reserved
unsigned int reserved
Definition: hppa-tdep.h:133
HPPA_SR2_REGNUM
Definition: hppa-tdep.h:55
HPPA_PID2_REGNUM
Definition: hppa-tdep.h:63
HPPA_SR5_REGNUM
Definition: hppa-tdep.h:57
unwind_table_entry::Entry_SR
unsigned int Entry_SR
Definition: hppa-tdep.h:134
unwind_table_entry::Save_MRP_in_frame
unsigned int Save_MRP_in_frame
Definition: hppa-tdep.h:150
CORE_ADDR
bfd_vma CORE_ADDR
Definition: common-types.h:41
EXPORT
Definition: hppa-tdep.h:184
unwind_table_entry::Large_frame
unsigned int Large_frame
Definition: hppa-tdep.h:156
HPPA_ARG0_REGNUM
Definition: hppa-tdep.h:75
unwind_table_entry::Variable_Frame
unsigned int Variable_Frame
Definition: hppa-tdep.h:138
unwind_table_entry::reserved1
unsigned int reserved1
Definition: hppa-tdep.h:147
HPPA_ISR_REGNUM
Definition: hppa-tdep.h:50
unwind_table_entry::Two_Instruction_SP_Increment
unsigned int Two_Instruction_SP_Increment
Definition: hppa-tdep.h:142
unwind_table_entry::Cannot_unwind
unsigned int Cannot_unwind
Definition: hppa-tdep.h:129
gdbarch_tdep::in_solib_call_trampoline
int(* in_solib_call_trampoline)(struct gdbarch *gdbarch, CORE_ADDR pc)
Definition: hppa-tdep.h:102
HPPA64_FP4_REGNUM
Definition: hppa-tdep.h:72
HPPA_SR1_REGNUM
Definition: hppa-tdep.h:54
unwind_table_entry::save_r19
unsigned int save_r19
Definition: hppa-tdep.h:151
unwind_table_entry::Total_frame_size
unsigned int Total_frame_size
Definition: hppa-tdep.h:159
gdbarch_tdep::pc
struct m32c_reg * pc
Definition: m32c-tdep.c:116
hppa_read_pc
CORE_ADDR hppa_read_pc(struct regcache *regcache)
Definition: hppa-tdep.c:1307
gdbarch_tdep
Definition: aarch64-tdep.h:55
HPPA_SR0_REGNUM
Definition: hppa-tdep.h:53
HPPA_PCOQ_TAIL_REGNUM
Definition: hppa-tdep.h:46
HPPA_RCR_REGNUM
Definition: hppa-tdep.h:60
frame_info
Definition: frame.c:85
unwind_table_entry::stub_unwind
struct unwind_table_entry::@75 stub_unwind
so_list
Definition: solist.h:38
HPPA_PCOQ_HEAD_REGNUM
Definition: hppa-tdep.h:44
HPPA_IOR_REGNUM
Definition: hppa-tdep.h:51
find_unwind_entry
struct unwind_table_entry * find_unwind_entry(CORE_ADDR)
Definition: hppa-tdep.c:486
HPPA_R0_REGNUM
Definition: hppa-tdep.h:31
gdbarch_tdep::unwind_adjust_stub
void(* unwind_adjust_stub)(struct frame_info *this_frame, CORE_ADDR base, struct trad_frame_saved_reg *saved_regs)
Definition: hppa-tdep.h:109
HPPA_R1_REGNUM
Definition: hppa-tdep.h:33
unwind_table_entry::stub_type
unsigned int stub_type
Definition: hppa-tdep.h:167
unwind_table_entry::Save_SP
unsigned int Save_SP
Definition: hppa-tdep.h:148
HPPA_SAR_REGNUM
Definition: hppa-tdep.h:42
unwind_table_entry::cxx_try_catch
unsigned int cxx_try_catch
Definition: hppa-tdep.h:145
name
const char *const name
Definition: aarch64-tdep.c:76
HPPA_TR0_REGNUM
Definition: hppa-tdep.h:66
HPPA_RP_REGNUM
Definition: hppa-tdep.h:35
unwind_table_entry::Cleanup_defined
unsigned int Cleanup_defined
Definition: hppa-tdep.h:152
hppa_write_pc
void hppa_write_pc(struct regcache *regcache, CORE_ADDR pc)
Definition: hppa-tdep.c:1327
unwind_table_entry::region_end
CORE_ADDR region_end
Definition: hppa-tdep.h:127
objfile::objfile
objfile(bfd *, const char *, objfile_flags)
Definition: objfiles.c:373
HPPA_PCSQ_HEAD_REGNUM
Definition: hppa-tdep.h:45
gdbarch_tdep::solib_get_got_by_pc
CORE_ADDR(* solib_get_got_by_pc)(CORE_ADDR addr)
Definition: hppa-tdep.h:115
HPPA_CR26_REGNUM
Definition: hppa-tdep.h:67
IMPORT_SHLIB
Definition: hppa-tdep.h:186
HPPA_IPSW_REGNUM
Definition: hppa-tdep.h:43
bound_minimal_symbol
Definition: minsyms.h:29
HPPA_PID3_REGNUM
Definition: hppa-tdep.h:64
HPPA_FP0_REGNUM
Definition: hppa-tdep.h:70
HPPA_SR3_REGNUM
Definition: hppa-tdep.h:56
HPPA_RET0_REGNUM
Definition: hppa-tdep.h:38
hppa_extract_17
int hppa_extract_17(unsigned int)
Definition: hppa-tdep.c:185
unwind_table_entry::MPE_XL_interrupt_marker
unsigned int MPE_XL_interrupt_marker
Definition: hppa-tdep.h:154
unwind_table_entry::Save_RP
unsigned int Save_RP
Definition: hppa-tdep.h:149
HPPA_DP_REGNUM
Definition: hppa-tdep.h:37
HPPA_PID1_REGNUM
Definition: hppa-tdep.h:62
HPPA_ARG1_REGNUM
Definition: hppa-tdep.h:76
unwind_table_entry::alloca_frame
unsigned int alloca_frame
Definition: hppa-tdep.h:157
unwind_table_entry::sched_entry_seq
unsigned int sched_entry_seq
Definition: hppa-tdep.h:146
HPPA_SR7_REGNUM
Definition: hppa-tdep.h:59
hppa_regnum
hppa_regnum
Definition: hppa-tdep.h:29
hppa_in_solib_call_trampoline
int hppa_in_solib_call_trampoline(struct gdbarch *gdbarch, CORE_ADDR pc)
Definition: hppa-tdep.c:2924
HPPA_ARG3_REGNUM
Definition: hppa-tdep.h:78
regnum
int regnum
Definition: aarch64-tdep.c:77
gdbarch_tdep::solib_thread_start_addr
CORE_ADDR(* solib_thread_start_addr)(struct so_list *so)
Definition: hppa-tdep.h:114
unwind_table_entry::region_start
CORE_ADDR region_start
Definition: hppa-tdep.h:126
HPPA_SR4_REGNUM
Definition: hppa-tdep.h:52
HPPA_R31_REGNUM
Definition: hppa-tdep.h:41
unwind_table_entry::Separate_Package_Body
unsigned int Separate_Package_Body
Definition: hppa-tdep.h:139
hppa_unwind_pc
CORE_ADDR hppa_unwind_pc(struct gdbarch *gdbarch, struct frame_info *next_frame)
Definition: hppa-tdep.c:2525
unwind_table_entry::Millicode_save_sr0
unsigned int Millicode_save_sr0
Definition: hppa-tdep.h:131
HPPA_ARG2_REGNUM
Definition: hppa-tdep.h:77
gdbarch_tdep::is_elf
int is_elf
Definition: hppa-tdep.h:93
unwind_table_entry::reserved2
unsigned int reserved2
Definition: hppa-tdep.h:158
HPPA_CR27_REGNUM
Definition: hppa-tdep.h:68
value
Definition: value.c:169
hppa_extract_14
int hppa_extract_14(unsigned)
Definition: hppa-tdep.c:155
objfile
Definition: objfiles.h:286
hppa_lookup_stub_minimal_symbol
struct bound_minimal_symbol hppa_lookup_stub_minimal_symbol(const char *name, enum unwind_stub_types stub_type)
Definition: hppa-tdep.c:2548
hppa_extract_5R_store
unsigned hppa_extract_5R_store(unsigned int)
Definition: hppa-tdep.c:147
unwind_table_entry::HP_UX_interrupt_marker
unsigned int HP_UX_interrupt_marker
Definition: hppa-tdep.h:155
unwind_table_entry::Entry_FR
unsigned int Entry_FR
Definition: hppa-tdep.h:135
hppa_frame_prev_register_helper
struct value * hppa_frame_prev_register_helper(struct frame_info *this_frame, struct trad_frame_saved_reg *saved_regs, int regnum)
hppa_extract_5_load
int hppa_extract_5_load(unsigned int)
Definition: hppa-tdep.c:131
HPPA_IIR_REGNUM
Definition: hppa-tdep.h:49
IMPORT
Definition: hppa-tdep.h:185
hppa_get_field
int hppa_get_field(unsigned word, int from, int to)
Definition: hppa-tdep.c:123
unwind_table_entry::Millicode
unsigned int Millicode
Definition: hppa-tdep.h:130
LONG_BRANCH
Definition: hppa-tdep.h:182
hppa_extract_5r_store
unsigned hppa_extract_5r_store(unsigned int)
Definition: hppa-tdep.c:139
hppa_symbol_address
CORE_ADDR hppa_symbol_address(const char *sym)
Definition: hppa-tdep.c:194
HPPA_FLAGS_REGNUM
Definition: hppa-tdep.h:34
HPPA_FP31R_REGNUM
Definition: hppa-tdep.h:73
gdbarch_tdep::solib_get_text_base
CORE_ADDR(* solib_get_text_base)(struct objfile *objfile)
Definition: hppa-tdep.h:117
unwind_table_entry::Frame_Extension_Millicode
unsigned int Frame_Extension_Millicode
Definition: hppa-tdep.h:140
gdbarch_tdep::bytes_per_address
int bytes_per_address
Definition: hppa-tdep.h:89
regcache
Definition: regcache.h:232
HPPA_RET1_REGNUM
Definition: hppa-tdep.h:39
frame_info::base
const struct frame_base * base
Definition: frame.c:142
HPPA_PCSQ_TAIL_REGNUM
Definition: hppa-tdep.h:47
HPPA_PID0_REGNUM
Definition: hppa-tdep.h:61
hppa_extract_21
int hppa_extract_21(unsigned)
Definition: hppa-tdep.c:163
unwind_table_entry::cxx_info
unsigned int cxx_info
Definition: hppa-tdep.h:144
unwind_table_entry::Entry_GR
unsigned int Entry_GR
Definition: hppa-tdep.h:136
trad_frame_saved_reg
Definition: trad-frame.h:81
HPPA_FP4_REGNUM
Definition: hppa-tdep.h:71
HPPA_SR6_REGNUM
Definition: hppa-tdep.h:58
unwind_table_entry
Definition: hppa-tdep.h:124
hppa_skip_trampoline_code
CORE_ADDR hppa_skip_trampoline_code(struct frame_info *, CORE_ADDR pc)
Definition: hppa-tdep.c:2952
unwind_table_entry::Stack_Overflow_Check
unsigned int Stack_Overflow_Check
Definition: hppa-tdep.h:141
unwind_stub_types
unwind_stub_types
Definition: hppa-tdep.h:180
unwind_table_entry::Region_description
unsigned int Region_description
Definition: hppa-tdep.h:132
unwind_table_entry::Args_stored
unsigned int Args_stored
Definition: hppa-tdep.h:137
PARAMETER_RELOCATION
Definition: hppa-tdep.h:183
HPPA_SP_REGNUM
Definition: hppa-tdep.h:40