-/* Machine-dependent code which would otherwise be in core.c
- for GDB, the GNU debugger. This code is for the HP PA-RISC cpu.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
-
- Contributed by the Center for Software Science at the
-
-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., 675 Mass Ave, Cambridge, MA 02139, 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> Can we live without this? */
-
-#ifndef hpux
-#include <a.out.h>
-#include <machine/pcb.h>
-#include <sys/time.h>
-#include "/usr/src/sys/hpux/hpux.h"
-#define USRSTACK 0x68FF3000
-#else
-#include <sys/user.h> /* After a.out.h */
-#endif
-
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/ptrace.h>
-
-#ifndef hpux
-#undef USIZE
-#undef UPAGES
-
-#define USIZE 3
-#define UPAGES 7
-#endif
-
-extern int errno;
-
-/* File names of core file and executable file. */
-
-extern char *corefile;
-extern char *execfile;
-
-/* Descriptors on which core file and executable file are open.
- Note that the execchan is closed when an inferior is created
- and reopened if the inferior dies or is killed. */
-
-extern int corechan;
-extern int execchan;
-
-/* Last modification time of executable file.
- Also used in source.c to compare against mtime of a source file. */
-
-extern int exec_mtime;
-
-/* Virtual addresses of bounds of the two areas of memory in the core file. */
-
-extern CORE_ADDR data_start;
-extern CORE_ADDR data_end;
-extern CORE_ADDR stack_start;
-extern CORE_ADDR stack_end;
-
-/* Virtual addresses of bounds of two areas of memory in the exec file.
- Note that the data area in the exec file is used only when there is no core file. */
-
-extern CORE_ADDR text_start;
-extern CORE_ADDR text_end;
-
-extern CORE_ADDR exec_data_start;
-extern CORE_ADDR exec_data_end;
-
-/* Address in executable file of start of text area data. */
-
-extern int text_offset;
-
-/* Address in executable file of start of data area data. */
-
-extern int exec_data_offset;
-
-/* Address in core file of start of data area data. */
-
-extern int data_offset;
-
-/* Address in core file of start of stack area data. */
-
-extern int stack_offset;
-
-extern struct header file_hdr;
-extern struct som_exec_auxhdr exec_hdr;
-
-extern int (*core_file_hook)();
-
-#ifdef KERNELDEBUG
-
-extern int kernel_debugging;
-extern int kernel_core_file_hook();
-
-#endif
-
-core_file_command (filename, from_tty)
- char *filename;
- int from_tty;
-{
- int val;
- extern char registers[];
-#ifdef KERNELDEBUG
- struct stat stb;
-#endif
-
- /* Discard all vestiges of any previous core file
- and mark data and stack spaces as empty. */
-
- if (corefile)
- free (corefile);
- corefile = 0;
- core_file_hook = 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 inferior with \"kill\".");
- corechan = open (filename, O_RDONLY, 0);
- if (corechan < 0)
- perror_with_name (filename);
-
-#ifdef KERNELDEBUG
- fstat(corechan, &stb);
-
- if (kernel_debugging) {
- setup_kernel_debugging();
- core_file_hook = kernel_core_file_hook;
- set_kernel_boundaries();
- } else if ((stb.st_mode & S_IFMT) == S_IFCHR &&
- stb.st_rdev == makedev(2, 1)) {
- /* looking at /dev/kmem */
- data_offset = data_start = KERNBASE;
- data_end = ~0; /* XXX */
- stack_end = stack_start = data_end;
- set_kernel_boundaries();
- } else
-#endif
- {
- /* HP PA-RISC style corefile. */
-#ifndef hpux
- struct hpuxuser u;
-#else
- struct user u;
-#endif
-
- 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);
-
- /* We are depending on exec_file_command having been called
- previously to set exec_data_start. Since the executable
- and the core file share the same text segment, the address
- of the data segment will be the same in both. */
- data_start = exec_data_start;
-
- data_end = data_start + NBPG * u.u_dsize;
- stack_start = USRSTACK; /* from sys/param.h */
- stack_end = stack_start + NBPG * u.u_ssize;
- data_offset = NBPG * UPAGES;
- 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 = NBPG * USIZE;
- /* 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++)
- {
- unsigned 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 (reg_names[regno])
- + 30);
- strcpy (buffer, "Reading register ");
- strcat (buffer, reg_names[regno]);
-
- perror_with_name (buffer);
- }
- if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
- buf[3] &= ~0x3;
- supply_register (regno, buf);
- }
- }
- }
- if (filename[0] == '/')
- corefile = savestring (filename, strlen (filename));
- else
- {
- corefile = concat (current_directory, "/", filename);
- }
-
- set_current_frame ( create_new_frame (read_register (FP_REGNUM),
- read_pc ()));
- select_frame (get_current_frame (), 0);
- validate_files ();
- }
- else if (from_tty)
- printf ("No core file now.\n");
-}
projects / binutils.git / blobdiff