diff options
Diffstat (limited to 'gdb/altos-xdep.c')
| -rw-r--r-- | gdb/altos-xdep.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/gdb/altos-xdep.c b/gdb/altos-xdep.c new file mode 100644 index 00000000000..5727332cf6f --- /dev/null +++ b/gdb/altos-xdep.c @@ -0,0 +1,164 @@ +/* Low level interface to ptrace, for GDB when running under m68k SVR2 Unix + on Altos 3068. Report bugs to Jyrki Kuoppala <jkp@cs.hut.fi> + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + +This file is part of GDB. + +This program 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 2 of the License, or +(at your option) any later version. + +This program 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 this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "defs.h" +#include "frame.h" +#include "inferior.h" + +#ifdef USG +#include <sys/types.h> +#endif + +#include <sys/param.h> +#include <sys/dir.h> +#include <signal.h> +#include <sys/ioctl.h> +#include <fcntl.h> +#ifdef USG +#include <sys/page.h> +#ifdef ALTOS +#include <sys/net.h> +#include <errno.h> +#endif +#endif + +#include "gdbcore.h" +#include <sys/user.h> /* After a.out.h */ +#include <sys/file.h> +#include "gdb_stat.h" + + +/* Work with core dump and executable files, for GDB. + This code would be in corefile.c if it weren't machine-dependent. */ + +void +core_file_command (filename, from_tty) + char *filename; + int from_tty; +{ + int val; + extern char registers[]; + + /* Discard all vestiges of any previous core file + and mark data and stack spaces as empty. */ + + if (corefile) + free (corefile); + corefile = 0; + + if (corechan >= 0) + close (corechan); + corechan = -1; + + data_start = 0; + data_end = 0; + stack_start = STACK_END_ADDR; + stack_end = STACK_END_ADDR; + + /* Now, if a new core file was specified, open it and digest it. */ + + if (filename) + { + filename = tilde_expand (filename); + make_cleanup (free, filename); + + if (have_inferior_p ()) + error ("To look at a core file, you must kill the program with \"kill\"."); + corechan = open (filename, O_RDONLY, 0); + if (corechan < 0) + perror_with_name (filename); + /* 4.2-style (and perhaps also sysV-style) core dump file. */ + { + struct user u; + + unsigned int reg_offset; + + val = myread (corechan, &u, sizeof u); + if (val < 0) + perror_with_name ("Not a core file: reading upage"); + if (val != sizeof u) + error ("Not a core file: could only read %d bytes", val); + data_start = exec_data_start; + +#if !defined (NBPG) +#define NBPG NBPP +#endif +#if !defined (UPAGES) +#define UPAGES USIZE +#endif + + data_end = data_start + NBPG * u.u_dsize; + stack_start = stack_end - NBPG * u.u_ssize; + data_offset = NBPG * UPAGES + exec_data_start % NBPG /* Not sure about this //jkp */; + stack_offset = NBPG * (UPAGES + u.u_dsize); + + /* Some machines put an absolute address in here and some put + the offset in the upage of the regs. */ + reg_offset = (int) u.u_state; + if (reg_offset > NBPG * UPAGES) + reg_offset -= KERNEL_U_ADDR; + + memcpy (&core_aouthdr, &u.u_exdata, sizeof (AOUTHDR)); + printf_unfiltered ("Core file is from \"%s\".\n", u.u_comm); + + /* I don't know where to find this info. + So, for now, mark it as not available. */ + N_SET_MAGIC (core_aouthdr, 0); + + /* Read the register values out of the core file and store + them where `read_register' will find them. */ + + { + register int regno; + + for (regno = 0; regno < NUM_REGS; regno++) + { + char buf[MAX_REGISTER_RAW_SIZE]; + + val = lseek (corechan, register_addr (regno, reg_offset), 0); + if (val < 0 + || (val = myread (corechan, buf, sizeof buf)) < 0) + { + char * buffer = (char *) alloca (strlen (REGISTER_NAME (regno)) + + 30); + strcpy (buffer, "Reading register "); + strcat (buffer, REGISTER_NAME (regno)); + + perror_with_name (buffer); + } + + supply_register (regno, buf); + } + } + } + if (filename[0] == '/') + corefile = savestring (filename, strlen (filename)); + else + { + corefile = concat (current_directory, "/", filename, NULL); + } + + flush_cached_frames (); + select_frame (get_current_frame (), 0); + validate_files (); + } + else if (from_tty) + printf_unfiltered ("No core file now.\n"); +} |