1 /* Low level interface to ptrace, for GDB when running under Unix.
2 Copyright (C) 1986, 1987, 1989, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 #include <sys/param.h>
28 #include <sys/ioctl.h>
37 /* Work with core dump and executable files, for GDB.
38 This code would be in core.c if it weren't machine-dependent. */
41 core_file_command (filename
, from_tty
)
46 extern char registers
[];
48 /* Discard all vestiges of any previous core file
49 and mark data and stack spaces as empty. */
61 stack_start
= STACK_END_ADDR
;
62 stack_end
= STACK_END_ADDR
;
64 /* Now, if a new core file was specified, open it and digest it. */
68 filename
= tilde_expand (filename
);
69 make_cleanup (free
, filename
);
71 if (have_inferior_p ())
72 error ("To look at a core file, you must kill the program with \"kill\".");
73 corechan
= open (filename
, O_RDONLY
, 0);
75 perror_with_name (filename
);
76 /* 4.2-style (and perhaps also sysV-style) core dump file. */
81 val
= myread (corechan
, &u
, sizeof u
);
83 perror_with_name (filename
);
84 data_start
= exec_data_start
;
86 data_end
= data_start
+ NBPG
* u
.u_dsize
;
87 stack_start
= stack_end
- NBPG
* u
.u_ssize
;
88 data_offset
= NBPG
* UPAGES
;
89 stack_offset
= NBPG
* (UPAGES
+ u
.u_dsize
);
90 reg_offset
= (int) u
.u_ar0
- KERNEL_U_ADDR
;
92 /* I don't know where to find this info.
93 So, for now, mark it as not available. */
94 core_aouthdr
.a_magic
= 0;
96 /* Read the register values out of the core file and store
97 them where `read_register' will find them. */
102 for (regno
= 0; regno
< NUM_REGS
; regno
++)
104 char buf
[MAX_REGISTER_RAW_SIZE
];
106 val
= lseek (corechan
, register_addr (regno
, reg_offset
), 0);
108 perror_with_name (filename
);
110 val
= myread (corechan
, buf
, sizeof buf
);
112 perror_with_name (filename
);
113 supply_register (regno
, buf
);
117 if (filename
[0] == '/')
118 corefile
= savestring (filename
, strlen (filename
));
121 corefile
= concat (current_directory
, "/", filename
, NULL
);
124 set_current_frame ( create_new_frame (read_register (FP_REGNUM
),
126 select_frame (get_current_frame (), 0);
130 printf ("No core file now.\n");
This page took 0.032444 seconds and 4 git commands to generate.