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3ff7cf9e JB |
1 | /* Common target dependent code for GDB on HPPA systems. |
2 | Copyright 2003 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef HPPA_TDEP_H | |
22 | #define HPPA_TDEP_H | |
23 | ||
7c46b9fb RC |
24 | enum { HPPA_INSTRUCTION_SIZE = 4 }; |
25 | ||
3ff7cf9e JB |
26 | /* Target-dependent structure in gdbarch. */ |
27 | struct gdbarch_tdep | |
28 | { | |
29 | /* The number of bytes in an address. For now, this field is designed | |
30 | to allow us to differentiate hppa32 from hppa64 targets. */ | |
31 | int bytes_per_address; | |
32 | }; | |
33 | ||
7c46b9fb RC |
34 | /* |
35 | * Unwind table and descriptor. | |
36 | */ | |
37 | ||
38 | struct unwind_table_entry | |
39 | { | |
40 | CORE_ADDR region_start; | |
41 | CORE_ADDR region_end; | |
42 | ||
43 | unsigned int Cannot_unwind:1; /* 0 */ | |
44 | unsigned int Millicode:1; /* 1 */ | |
45 | unsigned int Millicode_save_sr0:1; /* 2 */ | |
46 | unsigned int Region_description:2; /* 3..4 */ | |
47 | unsigned int reserved1:1; /* 5 */ | |
48 | unsigned int Entry_SR:1; /* 6 */ | |
49 | unsigned int Entry_FR:4; /* number saved *//* 7..10 */ | |
50 | unsigned int Entry_GR:5; /* number saved *//* 11..15 */ | |
51 | unsigned int Args_stored:1; /* 16 */ | |
52 | unsigned int Variable_Frame:1; /* 17 */ | |
53 | unsigned int Separate_Package_Body:1; /* 18 */ | |
54 | unsigned int Frame_Extension_Millicode:1; /* 19 */ | |
55 | unsigned int Stack_Overflow_Check:1; /* 20 */ | |
56 | unsigned int Two_Instruction_SP_Increment:1; /* 21 */ | |
57 | unsigned int Ada_Region:1; /* 22 */ | |
58 | unsigned int cxx_info:1; /* 23 */ | |
59 | unsigned int cxx_try_catch:1; /* 24 */ | |
60 | unsigned int sched_entry_seq:1; /* 25 */ | |
61 | unsigned int reserved2:1; /* 26 */ | |
62 | unsigned int Save_SP:1; /* 27 */ | |
63 | unsigned int Save_RP:1; /* 28 */ | |
64 | unsigned int Save_MRP_in_frame:1; /* 29 */ | |
65 | unsigned int extn_ptr_defined:1; /* 30 */ | |
66 | unsigned int Cleanup_defined:1; /* 31 */ | |
67 | ||
68 | unsigned int MPE_XL_interrupt_marker:1; /* 0 */ | |
69 | unsigned int HP_UX_interrupt_marker:1; /* 1 */ | |
70 | unsigned int Large_frame:1; /* 2 */ | |
71 | unsigned int Pseudo_SP_Set:1; /* 3 */ | |
72 | unsigned int reserved4:1; /* 4 */ | |
73 | unsigned int Total_frame_size:27; /* 5..31 */ | |
74 | ||
75 | /* This is *NOT* part of an actual unwind_descriptor in an object | |
76 | file. It is *ONLY* part of the "internalized" descriptors that | |
77 | we create from those in a file. | |
78 | */ | |
79 | struct | |
80 | { | |
81 | unsigned int stub_type:4; /* 0..3 */ | |
82 | unsigned int padding:28; /* 4..31 */ | |
83 | } | |
84 | stub_unwind; | |
85 | }; | |
86 | ||
87 | /* HP linkers also generate unwinds for various linker-generated stubs. | |
88 | GDB reads in the stubs from the $UNWIND_END$ subspace, then | |
89 | "converts" them into normal unwind entries using some of the reserved | |
90 | fields to store the stub type. */ | |
91 | ||
92 | /* The gaps represent linker stubs used in MPE and space for future | |
93 | expansion. */ | |
94 | enum unwind_stub_types | |
95 | { | |
96 | LONG_BRANCH = 1, | |
97 | PARAMETER_RELOCATION = 2, | |
98 | EXPORT = 10, | |
99 | IMPORT = 11, | |
100 | IMPORT_SHLIB = 12, | |
101 | }; | |
102 | ||
103 | /* We use the objfile->obj_private pointer for two things: | |
104 | * 1. An unwind table; | |
105 | * | |
106 | * 2. A pointer to any associated shared library object. | |
107 | * | |
108 | * #defines are used to help refer to these objects. | |
109 | */ | |
110 | ||
111 | /* Info about the unwind table associated with an object file. | |
112 | * This is hung off of the "objfile->obj_private" pointer, and | |
113 | * is allocated in the objfile's psymbol obstack. This allows | |
114 | * us to have unique unwind info for each executable and shared | |
115 | * library that we are debugging. | |
116 | */ | |
117 | struct hppa_unwind_info | |
118 | { | |
119 | struct unwind_table_entry *table; /* Pointer to unwind info */ | |
120 | struct unwind_table_entry *cache; /* Pointer to last entry we found */ | |
121 | int last; /* Index of last entry */ | |
122 | }; | |
123 | ||
124 | struct hppa_objfile_private | |
125 | { | |
126 | struct hppa_unwind_info *unwind_info; /* a pointer */ | |
127 | struct so_list *so_info; /* a pointer */ | |
128 | CORE_ADDR dp; | |
129 | }; | |
130 | ||
131 | extern const struct objfile_data *hppa_objfile_priv_data; | |
132 | ||
3ff7cf9e | 133 | #endif /* HPPA_TDEP_H */ |