]>
git.ipfire.org Git - thirdparty/binutils-gdb.git/blob - gdb/stuff.c
1 /* Program to stuff files into a specially prepared space in kdb.
2 Copyright (C) 1986, 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., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Written 13-Mar-86 by David Bridgham. */
25 #include <sys/types.h>
42 static char zeros
[4] =
46 err ("Not enough arguments\nUsage: %s -o kdb file1 file2 ...\n",
50 for (i
= 1; i
< argc
; i
++)
52 if (STREQ (argv
[i
], "-o"))
56 err ("Output file not specified\n");
58 offset
= get_offset (outfile
, "_heap");
60 out_fd
= open (outfile
, O_WRONLY
);
62 err ("Error opening %s for write: %s\n", outfile
, strerror (errno
));
63 if (lseek (out_fd
, offset
, 0) < 0)
64 err ("Error seeking to heap in %s: %s\n", outfile
, strerror (errno
));
66 /* For each file listed on the command line, write it into the
67 * 'heap' of the output file. Make sure to skip the arguments
68 * that name the output file. */
69 for (i
= 1; i
< argc
; i
++)
71 if (STREQ (argv
[i
], "-o"))
73 if ((in_fd
= open (argv
[i
], O_RDONLY
)) < 0)
74 err ("Error opening %s for read: %s\n", argv
[i
],
76 if (fstat (in_fd
, &stat_buf
) < 0)
77 err ("Error stat'ing %s: %s\n", argv
[i
], strerror (errno
));
78 size
= strlen (argv
[i
]);
80 size
+= pad
+ stat_buf
.st_size
+ sizeof (int);
81 write (out_fd
, &size
, sizeof (int));
82 write (out_fd
, argv
[i
], strlen (argv
[i
]));
83 write (out_fd
, zeros
, pad
);
84 while ((size
= read (in_fd
, buf
, sizeof (buf
))) > 0)
85 write (out_fd
, buf
, size
);
89 write (out_fd
, &size
, sizeof (int));
94 /* Read symbol table from file and returns the offset into the file
95 * where symbol sym_name is located. If error, print message and
97 get_offset (file
, sym_name
)
102 struct exec file_hdr
;
103 struct nlist
*symbol_table
;
107 f
= open (file
, O_RDONLY
);
109 err ("Error opening %s: %s\n", file
, strerror (errno
));
110 if (read (f
, &file_hdr
, sizeof (file_hdr
)) < 0)
111 err ("Error reading exec structure: %s\n", strerror (errno
));
112 if (N_BADMAG (file_hdr
))
113 err ("File %s not an a.out file\n", file
);
115 /* read in symbol table */
116 if ((symbol_table
= (struct nlist
*) malloc (file_hdr
.a_syms
)) == 0)
117 err ("Couldn't allocate space for symbol table\n");
118 if (lseek (f
, N_SYMOFF (file_hdr
), 0) == -1)
119 err ("lseek error: %s\n", strerror (errno
));
120 if (read (f
, symbol_table
, file_hdr
.a_syms
) == -1)
121 err ("Error reading symbol table from %s: %s\n", file
,
124 /* read in string table */
125 if (read (f
, &size
, 4) == -1)
126 err ("reading string table size: %s\n", strerror (errno
));
127 if ((strings
= (char *) malloc (size
)) == 0)
128 err ("Couldn't allocate memory for string table\n");
129 if (read (f
, strings
, size
- 4) == -1)
130 err ("reading string table: %s\n", strerror (errno
));
132 /* Find the core address at which the first byte of kdb text segment
133 should be loaded into core when kdb is run. */
134 origin
= find_symbol ("_etext", symbol_table
, file_hdr
.a_syms
, strings
)
136 /* Find the core address at which the heap will appear. */
137 coreaddr
= find_symbol (sym_name
, symbol_table
, file_hdr
.a_syms
, strings
);
138 /* Return address in file of the heap data space. */
139 return (N_TXTOFF (file_hdr
) + core_addr
- origin
);
142 find_symbol (sym_name
, symbol_table
, length
, strings
)
144 struct nlist
*symbol_table
;
148 register struct nlist
*sym
;
150 /* Find symbol in question */
151 for (sym
= symbol_table
;
152 sym
!= (struct nlist
*) ((char *) symbol_table
+ length
);
155 if ((sym
->n_type
& N_TYPE
) != N_DATA
)
157 if (sym
->n_un
.n_strx
== 0)
159 if (STREQ (sym_name
, strings
+ sym
->n_un
.n_strx
- 4))
162 err ("Data symbol %s not found in %s\n", sym_name
, file
);
174 string
= va_arg (args
, char *);
175 vfprintf (gdb_stderr
, string
, args
);