Johns release

1 files changed, 174 insertions, 0 deletions

diff --git a/gdb/stuff.c b/gdb/stuff.c
new file mode 100644
index 0000000..2ffdc97
--- /dev/null
+++ b/gdb/stuff.c
@@ -0,0 +1,174 @@
+/* Program to stuff files into a specially prepared space in kdb.
+   Copyright (C) 1986, 1989, 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+GDB is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 1, or (at your option)
+any later version.
+
+GDB is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GDB; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Written 13-Mar-86 by David Bridgham. */
+
+#include <stdio.h>
+#include <a.out.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+#include <varargs.h>
+
+extern char *sys_errlist[];
+
+main (argc, argv)
+     int argc;
+     char *argv[];
+{
+  register char *cp;
+  char *outfile;
+  register int i;
+  int offset;
+  int out_fd, in_fd;
+  struct stat stat_buf;
+  int size, pad;
+  char buf[1024];
+  static char zeros[4] = {0};
+
+  if (argc < 4)
+    err("Not enough arguments\nUsage: %s -o kdb file1 file2 ...\n",
+	argv[0]);
+
+  outfile = 0;
+  for (i = 1; i < argc; i++)
+    {
+      if (strcmp (argv[i], "-o") == 0)
+	outfile = argv[++i];
+    }
+  if (outfile == 0)
+    err("Output file not specified\n");
+
+  offset = get_offset (outfile, "_heap");
+
+  out_fd = open (outfile, O_WRONLY);
+  if (out_fd < 0)
+    err ("Error opening %s for write: %s\n", outfile, sys_errlist[errno]);
+  if (lseek (out_fd, offset, 0) < 0)
+    err ("Error seeking to heap in %s: %s\n", outfile, sys_errlist[errno]);
+
+  /* For each file listed on the command line, write it into the
+   * 'heap' of the output file.  Make sure to skip the arguments
+   * that name the output file. */
+  for (i = 1; i < argc; i++)
+    {
+      if (strcmp (argv[i], "-o") == 0)
+	continue;
+      if ((in_fd = open (argv[i], O_RDONLY)) < 0)
+	err ("Error opening %s for read: %s\n", argv[i], sys_errlist[errno]);
+      if (fstat (in_fd, &stat_buf) < 0)
+	err ("Error stat'ing %s: %s\n", argv[i], sys_errlist[errno]);
+      size = strlen (argv[i]);
+      pad = 4 - (size & 3);
+      size += pad + stat_buf.st_size + sizeof (int);
+      write (out_fd, &size, sizeof (int));
+      write (out_fd, argv[i], strlen (argv[i]));
+      write (out_fd, zeros, pad);
+      while ((size = read (in_fd, buf, sizeof (buf))) > 0)
+	write (out_fd, buf, size);
+      close (in_fd);
+    }
+  size = 0;
+  write (out_fd, &size, sizeof (int));
+  close (out_fd);
+  return (0);
+}
+
+/* Read symbol table from file and returns the offset into the file
+ * where symbol sym_name is located.  If error, print message and
+ * exit. */
+get_offset (file, sym_name)
+     char *file;
+     char *sym_name;
+{
+  int f;
+  struct exec file_hdr;
+  struct nlist *symbol_table;
+  int size;
+  char *strings;
+
+  f = open (file, O_RDONLY);
+  if (f < 0)
+    err ("Error opening %s: %s\n", file, sys_errlist[errno]);
+  if (read (f, &file_hdr, sizeof (file_hdr)) < 0)
+    err ("Error reading exec structure: %s\n", sys_errlist[errno]);
+  if (N_BADMAG (file_hdr))
+    err ("File %s not an a.out file\n", file);
+
+  /* read in symbol table */
+  if ((symbol_table = (struct nlist *)malloc (file_hdr.a_syms)) == 0)
+    err ("Couldn't allocate space for symbol table\n");
+  if (lseek (f, N_SYMOFF (file_hdr), 0) == -1)
+    err ("lseek error: %s\n", sys_errlist[errno]);
+  if (read (f, symbol_table, file_hdr.a_syms) == -1)
+    err ("Error reading symbol table from %s: %s\n", file, sys_errlist[errno]);
+
+  /* read in string table */
+  if (read (f, &size, 4) == -1)
+    err ("reading string table size: %s\n", sys_errlist[errno]);
+  if ((strings = (char *)malloc (size)) == 0)
+    err ("Couldn't allocate memory for string table\n");
+  if (read (f, strings, size - 4) == -1)
+    err ("reading string table: %s\n", sys_errlist[errno]);
+
+  /* Find the core address at which the first byte of kdb text segment
+     should be loaded into core when kdb is run.  */
+  origin = find_symbol ("_etext", symbol_table, file_hdr.a_syms, strings)
+    - file_hdr.a_text;
+  /* Find the core address at which the heap will appear.  */
+  coreaddr = find_symbol (sym_name, symbol_table, file_hdr.a_syms, strings);
+  /* Return address in file of the heap data space.  */
+  return (N_TXTOFF (file_hdr) + core_addr - origin);
+}
+
+find_symbol (sym_name, symbol_table, length, strings)
+     char *sym_name;
+     struct nlist *symbol_table;
+     int length;
+     char *strings;
+{
+  register struct nlist *sym;
+
+  /* Find symbol in question */
+  for (sym = symbol_table;
+       sym != (struct nlist *)((char *)symbol_table + length);
+       sym++)
+      {
+	if ((sym->n_type & N_TYPE) != N_DATA) continue;
+	if (sym->n_un.n_strx == 0) continue;
+	if (strcmp (sym_name, strings + sym->n_un.n_strx - 4) == 0)
+	  return sym->n_value;
+      }
+    err ("Data symbol %s not found in %s\n", sym_name, file);
+}
+
+/* VARARGS */
+void
+err (va_alist)
+     va_dcl
+{
+  va_list args;
+  char *string;
+
+  va_start (args);
+  string = va_arg (args, char *);
+  vfprintf (stderr, string, args);
+  va_end (args);
+  exit (-1);
+}