1/* Extract registers from a "standard" core file, for GDB.
2 Copyright (C) 1988-1995 Free Software Foundation, Inc.
3
4This file is part of GDB.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20/* Typically used on systems that have a.out format executables.
21 corefile.c is supposed to contain the more machine-independent
22 aspects of reading registers from core files, while this file is
23 more machine specific. */
24
25#include "defs.h"
26#include <sys/types.h>
27#include <sys/param.h>
28#include "gdbcore.h"
29#include "value.h" /* For supply_register. */
30#include "inferior.h" /* For ARCH_NUM_REGS. */
31
32/* These are needed on various systems to expand REGISTER_U_ADDR. */
33#ifndef USG
34#include <sys/dir.h>
35#include <sys/file.h>
36#include "gdb_stat.h"
37#include <sys/user.h>
38#ifndef NO_PTRACE_H
39# ifdef PTRACE_IN_WRONG_PLACE
40# include <ptrace.h>
41# else /* !PTRACE_IN_WRONG_PLACE */
42# include <sys/ptrace.h>
43# endif /* !PTRACE_IN_WRONG_PLACE */
44#endif /* NO_PTRACE_H */
45#endif
46
47#ifndef CORE_REGISTER_ADDR
48#define CORE_REGISTER_ADDR(regno, regptr) register_addr(regno, regptr)
49#endif /* CORE_REGISTER_ADDR */
50
51#ifdef NEED_SYS_CORE_H
52#include <sys/core.h>
53#endif
54
55/* Extract the register values out of the core file and store
56 them where `read_register' will find them.
57
58 CORE_REG_SECT points to the register values themselves, read into memory.
59 CORE_REG_SIZE is the size of that area.
60 WHICH says which set of registers we are handling (0 = int, 2 = float
61 on machines where they are discontiguous).
62 REG_ADDR is the offset from u.u_ar0 to the register values relative to
63 core_reg_sect. This is used with old-fashioned core files to
64 locate the registers in a large upage-plus-stack ".reg" section.
65 Original upage address X is at location core_reg_sect+x+reg_addr.
66 */
67
68static void
69fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
| 1/* Extract registers from a "standard" core file, for GDB.
2 Copyright (C) 1988-1995 Free Software Foundation, Inc.
3
4This file is part of GDB.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20/* Typically used on systems that have a.out format executables.
21 corefile.c is supposed to contain the more machine-independent
22 aspects of reading registers from core files, while this file is
23 more machine specific. */
24
25#include "defs.h"
26#include <sys/types.h>
27#include <sys/param.h>
28#include "gdbcore.h"
29#include "value.h" /* For supply_register. */
30#include "inferior.h" /* For ARCH_NUM_REGS. */
31
32/* These are needed on various systems to expand REGISTER_U_ADDR. */
33#ifndef USG
34#include <sys/dir.h>
35#include <sys/file.h>
36#include "gdb_stat.h"
37#include <sys/user.h>
38#ifndef NO_PTRACE_H
39# ifdef PTRACE_IN_WRONG_PLACE
40# include <ptrace.h>
41# else /* !PTRACE_IN_WRONG_PLACE */
42# include <sys/ptrace.h>
43# endif /* !PTRACE_IN_WRONG_PLACE */
44#endif /* NO_PTRACE_H */
45#endif
46
47#ifndef CORE_REGISTER_ADDR
48#define CORE_REGISTER_ADDR(regno, regptr) register_addr(regno, regptr)
49#endif /* CORE_REGISTER_ADDR */
50
51#ifdef NEED_SYS_CORE_H
52#include <sys/core.h>
53#endif
54
55/* Extract the register values out of the core file and store
56 them where `read_register' will find them.
57
58 CORE_REG_SECT points to the register values themselves, read into memory.
59 CORE_REG_SIZE is the size of that area.
60 WHICH says which set of registers we are handling (0 = int, 2 = float
61 on machines where they are discontiguous).
62 REG_ADDR is the offset from u.u_ar0 to the register values relative to
63 core_reg_sect. This is used with old-fashioned core files to
64 locate the registers in a large upage-plus-stack ".reg" section.
65 Original upage address X is at location core_reg_sect+x+reg_addr.
66 */
67
68static void
69fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
|
70 char *core_reg_sect;
71 unsigned core_reg_size;
72 int which;
73 unsigned reg_addr;
| 70 char *core_reg_sect;
71 unsigned core_reg_size;
72 int which;
73 CORE_ADDR reg_addr;
|
74{
75 register int regno;
| 74{
75 register int regno;
|
76 register unsigned int addr;
| 76 register CORE_ADDR addr;
|
77 int bad_reg = -1;
| 77 int bad_reg = -1;
|
78 register reg_ptr = -reg_addr; /* Original u.u_ar0 is -reg_addr. */
| 78 register CORE_ADDR reg_ptr = -reg_addr; /* Original u.u_ar0 is -reg_addr. */
|
79 int numregs = ARCH_NUM_REGS;
80
81 /* If u.u_ar0 was an absolute address in the core file, relativize it now,
82 so we can use it as an offset into core_reg_sect. When we're done,
83 "register 0" will be at core_reg_sect+reg_ptr, and we can use
84 CORE_REGISTER_ADDR to offset to the other registers. If this is a modern
85 core file without a upage, reg_ptr will be zero and this is all a big
86 NOP. */
| 79 int numregs = ARCH_NUM_REGS;
80
81 /* If u.u_ar0 was an absolute address in the core file, relativize it now,
82 so we can use it as an offset into core_reg_sect. When we're done,
83 "register 0" will be at core_reg_sect+reg_ptr, and we can use
84 CORE_REGISTER_ADDR to offset to the other registers. If this is a modern
85 core file without a upage, reg_ptr will be zero and this is all a big
86 NOP. */
|
87 if (reg_ptr > (int) core_reg_size)
| 87 if (reg_ptr > core_reg_size)
|
88 reg_ptr -= KERNEL_U_ADDR;
89
90 for (regno = 0; regno < numregs; regno++)
91 {
92 addr = CORE_REGISTER_ADDR (regno, reg_ptr);
93 if (addr >= core_reg_size) {
94 if (bad_reg < 0)
95 bad_reg = regno;
96 } else {
97 supply_register (regno, core_reg_sect + addr);
98 }
99 }
100 if (bad_reg >= 0)
101 {
102 error ("Register %s not found in core file.", reg_names[bad_reg]);
103 }
104}
105
106
107#ifdef REGISTER_U_ADDR
108
109/* Return the address in the core dump or inferior of register REGNO.
110 BLOCKEND is the address of the end of the user structure. */
111
112unsigned int
113register_addr (regno, blockend)
114 int regno;
115 int blockend;
116{
| 88 reg_ptr -= KERNEL_U_ADDR;
89
90 for (regno = 0; regno < numregs; regno++)
91 {
92 addr = CORE_REGISTER_ADDR (regno, reg_ptr);
93 if (addr >= core_reg_size) {
94 if (bad_reg < 0)
95 bad_reg = regno;
96 } else {
97 supply_register (regno, core_reg_sect + addr);
98 }
99 }
100 if (bad_reg >= 0)
101 {
102 error ("Register %s not found in core file.", reg_names[bad_reg]);
103 }
104}
105
106
107#ifdef REGISTER_U_ADDR
108
109/* Return the address in the core dump or inferior of register REGNO.
110 BLOCKEND is the address of the end of the user structure. */
111
112unsigned int
113register_addr (regno, blockend)
114 int regno;
115 int blockend;
116{
|
117 int addr;
| 117 CORE_ADDR addr;
|
118
119 if (regno < 0 || regno >= ARCH_NUM_REGS)
120 error ("Invalid register number %d.", regno);
121
122 REGISTER_U_ADDR (addr, blockend, regno);
123
124 return addr;
125}
126
127#endif /* REGISTER_U_ADDR */
128
129
130/* Register that we are able to handle aout (trad-core) file formats. */
131
132static struct core_fns aout_core_fns =
133{
134 bfd_target_unknown_flavour,
135 fetch_core_registers,
136 NULL
137};
138
139void
140_initialize_core_aout ()
141{
142 add_core_fns (&aout_core_fns);
143}
| 118
119 if (regno < 0 || regno >= ARCH_NUM_REGS)
120 error ("Invalid register number %d.", regno);
121
122 REGISTER_U_ADDR (addr, blockend, regno);
123
124 return addr;
125}
126
127#endif /* REGISTER_U_ADDR */
128
129
130/* Register that we are able to handle aout (trad-core) file formats. */
131
132static struct core_fns aout_core_fns =
133{
134 bfd_target_unknown_flavour,
135 fetch_core_registers,
136 NULL
137};
138
139void
140_initialize_core_aout ()
141{
142 add_core_fns (&aout_core_fns);
143}
|