1 /* Common target dependent code for GDB on HPPA systems.
2 Copyright 2003, 2004 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 struct trad_frame_saved_reg
;
26 /* Register numbers of various important registers.
27 Note that some of these values are "real" register numbers,
28 and correspond to the general registers of the machine,
29 and some are "phony" register numbers which are too large
30 to be actual register numbers as far as the user is concerned
31 but do serve to get the desired values when passed to read_register. */
35 HPPA_R0_REGNUM
= 0, /* Doesn't actually exist, used as base for
38 HPPA_FLAGS_REGNUM
= 0, /* Various status flags */
39 HPPA_RP_REGNUM
= 2, /* return pointer */
40 HPPA_FP_REGNUM
= 3, /* The ABI's frame pointer, when used */
41 HPPA_SP_REGNUM
= 30, /* Stack pointer. */
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_RCR_REGNUM
= 51, /* Recover Counter (also known as cr0) */
54 HPPA_PID0_REGNUM
= 52, /* Protection ID */
55 HPPA_PID1_REGNUM
= 53, /* Protection ID */
56 HPPA_PID2_REGNUM
= 55, /* Protection ID */
57 HPPA_PID3_REGNUM
= 56, /* Protection ID */
58 HPPA_CCR_REGNUM
= 54, /* Coprocessor Configuration Register */
59 HPPA_TR0_REGNUM
= 57, /* Temporary Registers (cr24 -> cr31) */
60 HPPA_CR27_REGNUM
= 60, /* Base register for thread-local storage, cr27 */
61 HPPA_FP0_REGNUM
= 64, /* First floating-point. */
64 HPPA_ARG0_REGNUM
= 26, /* The first argument of a callee. */
65 HPPA_ARG1_REGNUM
= 25, /* The second argument of a callee. */
66 HPPA_ARG2_REGNUM
= 24, /* The third argument of a callee. */
67 HPPA_ARG3_REGNUM
= 23 /* The fourth argument of a callee. */
70 /* Target-dependent structure in gdbarch. */
73 /* The number of bytes in an address. For now, this field is designed
74 to allow us to differentiate hppa32 from hppa64 targets. */
75 int bytes_per_address
;
77 /* Is this an ELF target? This can be 64-bit HP-UX, or a 32/64-bit GNU/Linux
83 * Unwind table and descriptor.
86 struct unwind_table_entry
88 CORE_ADDR region_start
;
91 unsigned int Cannot_unwind
:1; /* 0 */
92 unsigned int Millicode
:1; /* 1 */
93 unsigned int Millicode_save_sr0
:1; /* 2 */
94 unsigned int Region_description
:2; /* 3..4 */
95 unsigned int reserved1
:1; /* 5 */
96 unsigned int Entry_SR
:1; /* 6 */
97 unsigned int Entry_FR
:4; /* number saved *//* 7..10 */
98 unsigned int Entry_GR
:5; /* number saved *//* 11..15 */
99 unsigned int Args_stored
:1; /* 16 */
100 unsigned int Variable_Frame
:1; /* 17 */
101 unsigned int Separate_Package_Body
:1; /* 18 */
102 unsigned int Frame_Extension_Millicode
:1; /* 19 */
103 unsigned int Stack_Overflow_Check
:1; /* 20 */
104 unsigned int Two_Instruction_SP_Increment
:1; /* 21 */
105 unsigned int Ada_Region
:1; /* 22 */
106 unsigned int cxx_info
:1; /* 23 */
107 unsigned int cxx_try_catch
:1; /* 24 */
108 unsigned int sched_entry_seq
:1; /* 25 */
109 unsigned int reserved2
:1; /* 26 */
110 unsigned int Save_SP
:1; /* 27 */
111 unsigned int Save_RP
:1; /* 28 */
112 unsigned int Save_MRP_in_frame
:1; /* 29 */
113 unsigned int extn_ptr_defined
:1; /* 30 */
114 unsigned int Cleanup_defined
:1; /* 31 */
116 unsigned int MPE_XL_interrupt_marker
:1; /* 0 */
117 unsigned int HP_UX_interrupt_marker
:1; /* 1 */
118 unsigned int Large_frame
:1; /* 2 */
119 unsigned int Pseudo_SP_Set
:1; /* 3 */
120 unsigned int reserved4
:1; /* 4 */
121 unsigned int Total_frame_size
:27; /* 5..31 */
123 /* This is *NOT* part of an actual unwind_descriptor in an object
124 file. It is *ONLY* part of the "internalized" descriptors that
125 we create from those in a file.
129 unsigned int stub_type
:4; /* 0..3 */
130 unsigned int padding
:28; /* 4..31 */
135 /* HP linkers also generate unwinds for various linker-generated stubs.
136 GDB reads in the stubs from the $UNWIND_END$ subspace, then
137 "converts" them into normal unwind entries using some of the reserved
138 fields to store the stub type. */
140 /* The gaps represent linker stubs used in MPE and space for future
142 enum unwind_stub_types
145 PARAMETER_RELOCATION
= 2,
151 struct unwind_table_entry
*find_unwind_entry (CORE_ADDR
);
153 /* We use the objfile->obj_private pointer for two things:
154 * 1. An unwind table;
156 * 2. A pointer to any associated shared library object.
158 * #defines are used to help refer to these objects.
161 /* Info about the unwind table associated with an object file.
162 * This is hung off of the "objfile->obj_private" pointer, and
163 * is allocated in the objfile's psymbol obstack. This allows
164 * us to have unique unwind info for each executable and shared
165 * library that we are debugging.
167 struct hppa_unwind_info
169 struct unwind_table_entry
*table
; /* Pointer to unwind info */
170 struct unwind_table_entry
*cache
; /* Pointer to last entry we found */
171 int last
; /* Index of last entry */
174 struct hppa_objfile_private
176 struct hppa_unwind_info
*unwind_info
; /* a pointer */
177 struct so_list
*so_info
; /* a pointer */
181 extern const struct objfile_data
*hppa_objfile_priv_data
;
183 int hppa_get_field (unsigned word
, int from
, int to
);
184 int hppa_extract_5_load (unsigned int);
185 unsigned hppa_extract_5R_store (unsigned int);
186 unsigned hppa_extract_5r_store (unsigned int);
187 int hppa_extract_17 (unsigned int);
188 int hppa_extract_21 (unsigned);
189 int hppa_extract_14 (unsigned);
190 int hppa_low_sign_extend (unsigned int, unsigned int);
191 int hppa_sign_extend (unsigned int, unsigned int);
194 hppa_frame_prev_register_helper (struct frame_info
*next_frame
,
195 struct trad_frame_saved_reg
*saved_regs
,
196 int regnum
, int *optimizedp
,
197 enum lval_type
*lvalp
, CORE_ADDR
*addrp
,
198 int *realnump
, void *valuep
);
200 #endif /* HPPA_TDEP_H */