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 enum { HPPA_INSTRUCTION_SIZE
= 4 };
28 /* Register numbers of various important registers.
29 Note that some of these values are "real" register numbers,
30 and correspond to the general registers of the machine,
31 and some are "phony" register numbers which are too large
32 to be actual register numbers as far as the user is concerned
33 but do serve to get the desired values when passed to read_register. */
37 HPPA_R0_REGNUM
= 0, /* Doesn't actually exist, used as base for
40 HPPA_FLAGS_REGNUM
= 0, /* Various status flags */
41 HPPA_RP_REGNUM
= 2, /* return pointer */
42 HPPA_FP_REGNUM
= 3, /* The ABI's frame pointer, when used */
43 HPPA_SP_REGNUM
= 30, /* Stack pointer. */
44 HPPA_SAR_REGNUM
= 32, /* Shift Amount Register */
45 HPPA_IPSW_REGNUM
= 41, /* Interrupt Processor Status Word */
46 HPPA_PCOQ_HEAD_REGNUM
= 33, /* instruction offset queue head */
47 HPPA_PCSQ_HEAD_REGNUM
= 34, /* instruction space queue head */
48 HPPA_PCOQ_TAIL_REGNUM
= 35, /* instruction offset queue tail */
49 HPPA_PCSQ_TAIL_REGNUM
= 36, /* instruction space queue tail */
50 HPPA_EIEM_REGNUM
= 37, /* External Interrupt Enable Mask */
51 HPPA_IIR_REGNUM
= 38, /* Interrupt Instruction Register */
52 HPPA_ISR_REGNUM
= 39, /* Interrupt Space Register */
53 HPPA_IOR_REGNUM
= 40, /* Interrupt Offset Register */
54 HPPA_SR4_REGNUM
= 43, /* space register 4 */
55 HPPA_RCR_REGNUM
= 51, /* Recover Counter (also known as cr0) */
56 HPPA_PID0_REGNUM
= 52, /* Protection ID */
57 HPPA_PID1_REGNUM
= 53, /* Protection ID */
58 HPPA_PID2_REGNUM
= 55, /* Protection ID */
59 HPPA_PID3_REGNUM
= 56, /* Protection ID */
60 HPPA_CCR_REGNUM
= 54, /* Coprocessor Configuration Register */
61 HPPA_TR0_REGNUM
= 57, /* Temporary Registers (cr24 -> cr31) */
62 HPPA_CR27_REGNUM
= 60, /* Base register for thread-local storage, cr27 */
63 HPPA_FP0_REGNUM
= 64, /* First floating-point. */
66 HPPA_ARG0_REGNUM
= 26, /* The first argument of a callee. */
67 HPPA_ARG1_REGNUM
= 25, /* The second argument of a callee. */
68 HPPA_ARG2_REGNUM
= 24, /* The third argument of a callee. */
69 HPPA_ARG3_REGNUM
= 23 /* The fourth argument of a callee. */
72 /* Target-dependent structure in gdbarch. */
75 /* The number of bytes in an address. For now, this field is designed
76 to allow us to differentiate hppa32 from hppa64 targets. */
77 int bytes_per_address
;
79 /* Is this an ELF target? This can be 64-bit HP-UX, or a 32/64-bit GNU/Linux
85 * Unwind table and descriptor.
88 struct unwind_table_entry
90 CORE_ADDR region_start
;
93 unsigned int Cannot_unwind
:1; /* 0 */
94 unsigned int Millicode
:1; /* 1 */
95 unsigned int Millicode_save_sr0
:1; /* 2 */
96 unsigned int Region_description
:2; /* 3..4 */
97 unsigned int reserved1
:1; /* 5 */
98 unsigned int Entry_SR
:1; /* 6 */
99 unsigned int Entry_FR
:4; /* number saved *//* 7..10 */
100 unsigned int Entry_GR
:5; /* number saved *//* 11..15 */
101 unsigned int Args_stored
:1; /* 16 */
102 unsigned int Variable_Frame
:1; /* 17 */
103 unsigned int Separate_Package_Body
:1; /* 18 */
104 unsigned int Frame_Extension_Millicode
:1; /* 19 */
105 unsigned int Stack_Overflow_Check
:1; /* 20 */
106 unsigned int Two_Instruction_SP_Increment
:1; /* 21 */
107 unsigned int Ada_Region
:1; /* 22 */
108 unsigned int cxx_info
:1; /* 23 */
109 unsigned int cxx_try_catch
:1; /* 24 */
110 unsigned int sched_entry_seq
:1; /* 25 */
111 unsigned int reserved2
:1; /* 26 */
112 unsigned int Save_SP
:1; /* 27 */
113 unsigned int Save_RP
:1; /* 28 */
114 unsigned int Save_MRP_in_frame
:1; /* 29 */
115 unsigned int extn_ptr_defined
:1; /* 30 */
116 unsigned int Cleanup_defined
:1; /* 31 */
118 unsigned int MPE_XL_interrupt_marker
:1; /* 0 */
119 unsigned int HP_UX_interrupt_marker
:1; /* 1 */
120 unsigned int Large_frame
:1; /* 2 */
121 unsigned int Pseudo_SP_Set
:1; /* 3 */
122 unsigned int reserved4
:1; /* 4 */
123 unsigned int Total_frame_size
:27; /* 5..31 */
125 /* This is *NOT* part of an actual unwind_descriptor in an object
126 file. It is *ONLY* part of the "internalized" descriptors that
127 we create from those in a file.
131 unsigned int stub_type
:4; /* 0..3 */
132 unsigned int padding
:28; /* 4..31 */
137 /* HP linkers also generate unwinds for various linker-generated stubs.
138 GDB reads in the stubs from the $UNWIND_END$ subspace, then
139 "converts" them into normal unwind entries using some of the reserved
140 fields to store the stub type. */
142 /* The gaps represent linker stubs used in MPE and space for future
144 enum unwind_stub_types
147 PARAMETER_RELOCATION
= 2,
153 struct unwind_table_entry
*find_unwind_entry (CORE_ADDR
);
155 /* We use the objfile->obj_private pointer for two things:
156 * 1. An unwind table;
158 * 2. A pointer to any associated shared library object.
160 * #defines are used to help refer to these objects.
163 /* Info about the unwind table associated with an object file.
164 * This is hung off of the "objfile->obj_private" pointer, and
165 * is allocated in the objfile's psymbol obstack. This allows
166 * us to have unique unwind info for each executable and shared
167 * library that we are debugging.
169 struct hppa_unwind_info
171 struct unwind_table_entry
*table
; /* Pointer to unwind info */
172 struct unwind_table_entry
*cache
; /* Pointer to last entry we found */
173 int last
; /* Index of last entry */
176 struct hppa_objfile_private
178 struct hppa_unwind_info
*unwind_info
; /* a pointer */
179 struct so_list
*so_info
; /* a pointer */
183 extern const struct objfile_data
*hppa_objfile_priv_data
;
185 int hppa_get_field (unsigned word
, int from
, int to
);
186 int hppa_extract_5_load (unsigned int);
187 unsigned hppa_extract_5R_store (unsigned int);
188 unsigned hppa_extract_5r_store (unsigned int);
189 int hppa_extract_17 (unsigned int);
190 int hppa_extract_21 (unsigned);
191 int hppa_extract_14 (unsigned);
192 int hppa_low_sign_extend (unsigned int, unsigned int);
193 int hppa_sign_extend (unsigned int, unsigned int);
196 hppa_frame_prev_register_helper (struct frame_info
*next_frame
,
197 struct trad_frame_saved_reg
*saved_regs
,
198 int regnum
, int *optimizedp
,
199 enum lval_type
*lvalp
, CORE_ADDR
*addrp
,
200 int *realnump
, void *valuep
);
202 #endif /* HPPA_TDEP_H */