1 /* Common target dependent code for GDB on HPPA systems.
2 Copyright 2003 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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. */
24 enum { HPPA_INSTRUCTION_SIZE
= 4 };
26 /* Target-dependent structure in gdbarch. */
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
;
35 * Unwind table and descriptor.
38 struct unwind_table_entry
40 CORE_ADDR region_start
;
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 */
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 */
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.
81 unsigned int stub_type
:4; /* 0..3 */
82 unsigned int padding
:28; /* 4..31 */
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. */
92 /* The gaps represent linker stubs used in MPE and space for future
94 enum unwind_stub_types
97 PARAMETER_RELOCATION
= 2,
103 /* We use the objfile->obj_private pointer for two things:
104 * 1. An unwind table;
106 * 2. A pointer to any associated shared library object.
108 * #defines are used to help refer to these objects.
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.
117 struct hppa_unwind_info
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 */
124 struct hppa_objfile_private
126 struct hppa_unwind_info
*unwind_info
; /* a pointer */
127 struct so_list
*so_info
; /* a pointer */
131 extern const struct objfile_data
*hppa_objfile_priv_data
;
133 #endif /* HPPA_TDEP_H */