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Diffstat (limited to 'gdb/RCS/core.c,v')
| -rw-r--r-- | gdb/RCS/core.c,v | 763 |
1 files changed, 0 insertions, 763 deletions
diff --git a/gdb/RCS/core.c,v b/gdb/RCS/core.c,v deleted file mode 100644 index 99547f8c0a..0000000000 --- a/gdb/RCS/core.c,v +++ /dev/null @@ -1,763 +0,0 @@ -head 1.2; -access ; -symbols RMS-has:1.2; -locks ; strict; -comment @ * @; - - -1.2 -date 88.01.26.05.04.52; author gnu; state Exp; -branches ; -next 1.1; - -1.1 -date 88.01.21.05.04.03; author gnu; state Exp; -branches ; -next ; - - -desc -@From RMS's development version on wheaties, 20Jan88 -@ - - -1.2 -log -@Hacks to get it to compile on a/ux. Needs work at finding the registers -in a core file. -@ -text -@/* Work with core dump and executable files, for GDB. - Copyright (C) 1986, 1987 Free Software Foundation, Inc. - -GDB is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone -for the consequences of using it or for whether it serves any -particular purpose or works at all, unless he says so in writing. -Refer to the GDB General Public License for full details. - -Everyone is granted permission to copy, modify and redistribute GDB, -but only under the conditions described in the GDB General Public -License. A copy of this license is supposed to have been given to you -along with GDB so you can know your rights and responsibilities. It -should be in a file named COPYING. Among other things, the copyright -notice and this notice must be preserved on all copies. - -In other words, go ahead and share GDB, but don't try to stop -anyone else from sharing it farther. Help stamp out software hoarding! -*/ - -#include "initialize.h" -#include "defs.h" -#include "param.h" - -#include <a.out.h> -#include <stdio.h> -#include <sys/types.h> -#include <sys/param.h> -#include <sys/dir.h> -#include <sys/file.h> -#include <sys/stat.h> - -/* Recognize COFF format systems because a.out.h defines AOUTHDR. */ -#ifdef AOUTHDR -#define COFF_FORMAT -#endif - -#ifdef NEW_SUN_CORE -#include <sys/core.h> -#else /* not NEW_SUN_CORE */ -#ifdef UMAX_CORE -#include <sys/ptrace.h> -#else /* not UMAX_CORE */ -#ifdef mac_aux -#include <sys/seg.h> -#include <sys/mmu.h> -#include <sys/signal.h> -#include <sys/time.h> -#include <sys/user.h> -#else -#include <sys/user.h> -#endif /* mac_aux */ -#endif /* UMAX_CORE */ -#endif /* NEW_SUN_CORE */ - -#ifndef N_TXTADDR -#define N_TXTADDR(hdr) 0 -#endif /* no N_TXTADDR */ - -#ifndef N_DATADDR -#define N_DATADDR(hdr) hdr.a_text -#endif /* no N_DATADDR */ - -/* Make COFF and non-COFF names for things a little more compatible - to reduce conditionals later. */ - -#ifdef COFF_FORMAT -#define a_magic magic -#endif - -#ifndef COFF_FORMAT -#define AOUTHDR struct exec -#endif - -START_FILE - -/* Hook for `exec_file_command' command to call. */ - -void (*exec_file_display_hook) (); - -/* File names of core file and executable file. */ - -static char *corefile; -static 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. */ - -static int corechan; -static int execchan; - -/* Last modification time of executable file. - Also used in source.c to compare against mtime of a source file. */ - -int exec_mtime; - -/* Virtual addresses of bounds of the two areas of memory in the core file. */ - -static CORE_ADDR data_start; -static CORE_ADDR data_end; -static CORE_ADDR stack_start; -static 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. */ - -static CORE_ADDR text_start; -static CORE_ADDR text_end; -static CORE_ADDR exec_data_start; -static CORE_ADDR exec_data_end; - -/* Address in executable file of start of text area data. */ - -static int text_offset; - -/* Address in executable file of start of data area data. */ - -static int exec_data_offset; - -/* Address in core file of start of data area data. */ - -static int data_offset; - -/* Address in core file of start of stack area data. */ - -static int stack_offset; - -#ifdef COFF_FORMAT -/* various coff data structures */ - -static FILHDR file_hdr; -static SCNHDR text_hdr; -static SCNHDR data_hdr; - -#endif /* not COFF_FORMAT */ - -/* a.out header saved in core file. */ - -static AOUTHDR core_aouthdr; - -/* a.out header of exec file. */ - -static AOUTHDR exec_aouthdr; - -static void validate_files (); -unsigned int register_addr (); - -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) - { - 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 NEW_SUN_CORE - { - struct core corestr; - - val = myread (corechan, &corestr, sizeof corestr); - if (val < 0) - perror_with_name (filename); - if (corestr.c_magic != CORE_MAGIC) - error ("\"%s\" does not appear to be a core dump file (magic 0x%x, expected 0x%x)", - filename, corestr.c_magic, (int) CORE_MAGIC); - else if (sizeof (struct core) != corestr.c_len) - error ("\"%s\" has an invalid struct core length (%d, expected %d)", - filename, corestr.c_len, (int) sizeof (struct core)); - - data_start = exec_data_start; - data_end = data_start + corestr.c_dsize; - stack_start = stack_end - corestr.c_ssize; - data_offset = sizeof corestr; - stack_offset = sizeof corestr + corestr.c_dsize; - - bcopy (&corestr.c_regs, registers, 16 * 4); - *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = corestr.c_regs.r_ps; - *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = corestr.c_regs.r_pc; - bcopy (corestr.c_fpstatus.fps_regs, - ®isters[REGISTER_BYTE (FP0_REGNUM)], - sizeof corestr.c_fpstatus.fps_regs); - bcopy (&corestr.c_fpstatus.fps_control, - ®isters[REGISTER_BYTE (FPC_REGNUM)], - sizeof corestr.c_fpstatus - sizeof corestr.c_fpstatus.fps_regs); - - bcopy (&corestr.c_aouthdr, &core_aouthdr, sizeof (struct exec)); - - printf ("Core file is from \"%s\".\n", corestr.c_cmdname); - } -#else /* not NEW_SUN_CORE */ - /* 4.2-style (and perhaps also sysV-style) core dump file. */ - { -#ifdef UMAX_CORE - struct ptrace_user u; -#else - struct user u; -#endif - int reg_offset; - - val = myread (corechan, &u, sizeof u); - if (val < 0) - perror_with_name (filename); - data_start = exec_data_start; - -#ifdef UMAX_CORE - data_end = data_start + u.pt_dsize; - stack_start = stack_end - u.pt_ssize; - data_offset = sizeof u; - stack_offset = data_offset + u.pt_dsize; - reg_offset = 0; - - bcopy (&u.pt_aouthdr, &core_aouthdr, sizeof (AOUTHDR)); - -#else /* not UMAX_CORE */ -#ifdef mac_aux - /* This may well not work for 0407 (nonshared text) a.out's */ - data_end = data_start + u.u_dsize << PAGESHIFT; - stack_start = stack_end - u.u_ssize << PAGESHIFT; - data_offset = USIZE; - stack_offset = USIZE + u.u_dsize << PAGESHIFT; - reg_offset = (int) &u.u_ar0[0] - (int) &u; - - core_aouthdr.a_magic = u.u_exdata.ux_mag; -#else - data_end = data_start + NBPG * u.u_dsize; - stack_start = stack_end - NBPG * u.u_ssize; - data_offset = NBPG * UPAGES; - stack_offset = NBPG * (UPAGES + u.u_dsize); - reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR; - - /* I don't know where to find this info. - So, for now, mark it as not available. */ - core_aouthdr.a_magic = 0; -#endif /* not mac_aux */ -#endif /* not UMAX_CORE */ - - /* 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) - perror_with_name (filename); - - val = myread (corechan, buf, sizeof buf); - if (val < 0) - perror_with_name (filename); - supply_register (regno, buf); - } - } - } -#endif /* not NEW_SUN_CORE */ - if (filename[0] == '/') - corefile = savestring (filename, strlen (filename)); - else - { - char dirname[MAXPATHLEN]; - - getwd (dirname); - corefile = concat (dirname, "/", filename); - } - - set_current_frame (read_register (FP_REGNUM)); - select_frame (get_current_frame (), 0); - validate_files (); - } - else if (from_tty) - printf ("No core file now.\n"); -} - -exec_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int val; - - /* Eliminate all traces of old exec file. - Mark text segment as empty. */ - - if (execfile) - free (execfile); - execfile = 0; - data_start = 0; - data_end -= exec_data_start; - text_start = 0; - text_end = 0; - exec_data_start = 0; - exec_data_end = 0; - if (execchan >= 0) - close (execchan); - execchan = -1; - - /* Now open and digest the file the user requested, if any. */ - - if (filename) - { - execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, - &execfile); - if (execchan < 0) - perror_with_name (filename); - -#ifdef COFF_FORMAT - { - int aout_hdrsize; - int num_sections; - - if (read_file_hdr (execchan, &file_hdr) < 0) - error ("\"%s\": not in executable format.", execfile); - - aout_hdrsize = file_hdr.f_opthdr; - num_sections = file_hdr.f_nscns; - - if (read_aout_hdr (execchan, &exec_aouthdr, aout_hdrsize) < 0) - error ("\"%s\": can't read optional aouthdr", execfile); - - if (read_section_hdr (execchan, _TEXT, &text_hdr, num_sections) < 0) - error ("\"%s\": can't read text section header", execfile); - - if (read_section_hdr (execchan, _DATA, &data_hdr, num_sections) < 0) - error ("\"%s\": can't read data section header", execfile); - - text_start = exec_aouthdr.text_start; - text_end = text_start + exec_aouthdr.tsize; - text_offset = text_hdr.s_scnptr; - exec_data_start = exec_aouthdr.data_start; - exec_data_end = exec_data_start + exec_aouthdr.dsize; - exec_data_offset = data_hdr.s_scnptr; - data_start = exec_data_start; - data_end += exec_data_start; - exec_mtime = file_hdr.f_timdat; - } -#else /* not COFF_FORMAT */ - { - struct stat st_exec; - - val = myread (execchan, &exec_aouthdr, sizeof (AOUTHDR)); - - if (val < 0) - perror_with_name (filename); - - text_start = N_TXTADDR (exec_aouthdr); - text_end = text_start + exec_aouthdr.a_text; - text_offset = N_TXTOFF (exec_aouthdr); - exec_data_start = N_DATADDR (exec_aouthdr); - exec_data_end = exec_data_start + exec_aouthdr.a_data; - exec_data_offset = N_TXTOFF (exec_aouthdr) + exec_aouthdr.a_text; - data_start = exec_data_start; - data_end += exec_data_start; - - fstat (execchan, &st_exec); - exec_mtime = st_exec.st_mtime; - } -#endif /* not COFF_FORMAT */ - - validate_files (); - } - else if (from_tty) - printf ("No exec file now.\n"); - - /* Tell display code (if any) about the changed file name. */ - if (exec_file_display_hook) - (*exec_file_display_hook) - (filename ? filename : "No executable specified.\n"); -} - -/* Call this to specify the hook for exec_file_command to call back. - This is called from the x-window display code. */ - -specify_exec_file_hook (hook) - void (*hook) (); -{ - exec_file_display_hook = hook; -} - -/* The exec file must be closed before running an inferior. - If it is needed again after the inferior dies, it must - be reopened. */ - -close_exec_file () -{ - if (execchan >= 0) - close (execchan); - execchan = -1; -} - -reopen_exec_file () -{ - if (execchan < 0 && execfile != 0) - { - char *filename = concat (execfile, "", ""); - exec_file_command (filename, 0); - free (filename); - } -} - -/* If we have both a core file and an exec file, - print a warning if they don't go together. - This should really check that the core file came - from that exec file, but I don't know how to do it. */ - -static void -validate_files () -{ - if (execfile != 0 && corefile != 0) - { - struct stat st_core; - - fstat (corechan, &st_core); - - if (core_aouthdr.a_magic != 0 - && bcmp (&core_aouthdr, &exec_aouthdr, sizeof core_aouthdr)) - printf ("Warning: core file does not match specified executable file.\n"); - else if (exec_mtime > st_core.st_mtime) - printf ("Warning: exec file is newer than core file.\n"); - } -} - -char * -get_exec_file () -{ - if (execfile == 0) - error ("No executable file specified.\n\ -Use the \"exec-file\" and \"symbol-file\" commands."); - return execfile; -} - -int -have_core_file_p () -{ - return corefile != 0; -} - -static void -files_info () -{ - char *symfile; - extern char *get_sym_file (); - - if (execfile) - printf ("Executable file \"%s\".\n", execfile); - else - printf ("No executable file\n"); - if (corefile == 0) - printf ("No core dump file\n"); - else - printf ("Core dump file \"%s\".\n", corefile); - - if (have_inferior_p ()) - printf ("Using the running image of the program, rather than these files.\n"); - - symfile = get_sym_file (); - if (symfile != 0) - printf ("Symbols loaded from \"%s\".\n", symfile); - - if (! have_inferior_p ()) - { - if (execfile) - { - printf ("Text segment from 0x%x to 0x%x.\n", - text_start, text_end); - } - if (corefile) - { - printf ("Data segment from 0x%x to 0x%x.\nStack segment from 0x%x to 0x%x.\n", - data_start, data_end, stack_start, stack_end); - } - else - { - printf ("Data segment in executable from 0x%x to 0x%x.\n", - exec_data_start, exec_data_end); - } - } -} - -/* Read "memory data" from core file and/or executable file */ - -read_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - if (have_inferior_p ()) - read_inferior_memory (memaddr, myaddr, len); - else - xfer_core_file (memaddr, myaddr, len, 0); -} - -/* Write LEN bytes of data starting at address MYADDR - into debugged program memory at address MEMADDR. - Returns zero if successful, or an errno value if ptrace failed. */ - -int -write_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - if (have_inferior_p ()) - return write_inferior_memory (memaddr, myaddr, len); - else - error ("Can write memory only when program being debugged is running."); -} - -xfer_core_file (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - register int val; - int xferchan; - char **xferfile; - int fileptr; - - while (len > 0) - { - xferfile = 0; - xferchan = 0; - - /* Determine which file the next bunch of addresses reside in, - and where in the file. Set the file's read/write pointer - to point at the proper place for the desired address - and set xferfile and xferchan for the correct file. - If desired address is nonexistent, leave them zero. - i is set to the number of bytes that can be handled - along with the next address. */ - - if (memaddr < text_start) - { - i = min (len, text_start - memaddr); - } - else if (memaddr >= text_end && memaddr < data_start) - { - i = min (len, data_start - memaddr); - } - else if (memaddr >= (corechan >= 0 ? data_end : exec_data_end) - && memaddr < stack_start) - { - i = min (len, stack_start - memaddr); - } - else if (memaddr >= stack_end && stack_end != 0) - { - i = min (len, - memaddr); - } - /* Note that if there is no core file - data_start and data_end are equal. */ - else if (memaddr >= data_start && memaddr < data_end) - { - i = min (len, data_end - memaddr); - fileptr = memaddr - data_start + data_offset; - xferfile = &corefile; - xferchan = corechan; - } - /* Note that if there is no core file - stack_start and stack_end are equal. */ - else if (memaddr >= stack_start && memaddr < stack_end) - { - i = min (len, stack_end - memaddr); - fileptr = memaddr - stack_start + stack_offset; - xferfile = &corefile; - xferchan = corechan; - } - else if (corechan < 0 - && memaddr >= exec_data_start && memaddr < exec_data_end) - { - i = min (len, exec_data_end - memaddr); - fileptr = memaddr - exec_data_start + exec_data_offset; - xferfile = &execfile; - xferchan = execchan; - } - else if (memaddr >= text_start && memaddr < text_end) - { - i = min (len, text_end - memaddr); - fileptr = memaddr - text_start + text_offset; - xferfile = &execfile; - xferchan = execchan; - } - - /* Now we know which file to use. - Set up its pointer and transfer the data. */ - if (xferfile) - { - if (*xferfile == 0) - if (xferfile == &execfile) - error ("No program file to examine."); - else - error ("No core dump file or running program to examine."); - val = lseek (xferchan, fileptr, 0); - if (val < 0) - perror_with_name (*xferfile); - val = myread (xferchan, myaddr, i); - if (val < 0) - perror_with_name (*xferfile); - } - /* If this address is for nonexistent memory, - read zeros if reading, or do nothing if writing. */ - else - bzero (myaddr, i); - - memaddr += i; - myaddr += i; - len -= i; - } -} - -/* My replacement for the read system call. - Used like `read' but keeps going if `read' returns too soon. */ - -myread (desc, addr, len) - int desc; - char *addr; - int len; -{ - register int val; - int orglen = len; - - while (len > 0) - { - val = read (desc, addr, len); - if (val < 0) - return val; - if (val == 0) - return orglen - len; - len -= val; - addr += val; - } -} - -#ifndef NEW_SUN_CORE - -/* Return the address in the core dump or inferior of register REGNO. - BLOCKEND is the address of the end of the user structure. */ - -unsigned int -register_addr (regno, blockend) - int regno; - int blockend; -{ - int addr; - - if (regno < 0 || regno >= NUM_REGS) - error ("Invalid register number %d.", regno); - -#ifdef mac_aux -/* FIXME, we don't know where the regs are. Maybe the test command - * that tests what parts of the upage are writeable will find 'em for us. - */ -#define REGISTER_U_ADDR(addr, foo, bar) addr = 0; -#endif - REGISTER_U_ADDR (addr, blockend, regno); - - return addr; -} - -#endif /* not NEW_SUN_CORE */ - -static -initialize () -{ - corechan = -1; - execchan = -1; - corefile = 0; - execfile = 0; - exec_file_display_hook = 0; - - text_start = 0; - text_end = 0; - data_start = 0; - data_end = 0; - exec_data_start = 0; - exec_data_end = 0; - stack_start = STACK_END_ADDR; - stack_end = STACK_END_ADDR; - - add_com ("core-file", class_files, core_file_command, - "Use FILE as core dump for examining memory and registers.\n\ -No arg means have no core file."); - add_com ("exec-file", class_files, exec_file_command, - "Use FILE as program for getting contents of pure memory.\n\ -If FILE cannot be found as specified, your execution directory path\n\ -is searched for a command of that name.\n\ -No arg means have no executable file."); - add_info ("files", files_info, "Names of files being debugged."); -} - -END_FILE -@ - - -1.1 -log -@Initial revision -@ -text -@d27 1 -d44 5 -d50 4 -a53 1 -#endif -d240 10 -d259 1 -d675 6 -@ |
