diff options
Diffstat (limited to 'gdb/arm-xdep.c')
| -rw-r--r-- | gdb/arm-xdep.c | 1150 |
1 files changed, 575 insertions, 575 deletions
diff --git a/gdb/arm-xdep.c b/gdb/arm-xdep.c index 3c253c58809..64ca9003665 100644 --- a/gdb/arm-xdep.c +++ b/gdb/arm-xdep.c @@ -1,575 +1,575 @@ -/* Acorn Risc Machine host machine support. - Copyright (C) 1988, 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" -#include "opcode/arm.h" - -#include <sys/param.h> -#include <sys/dir.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <sys/ptrace.h> -#include <machine/reg.h> - -#define N_TXTADDR(hdr) 0x8000 -#define N_DATADDR(hdr) (hdr.a_text + 0x8000) - -#include "gdbcore.h" - -#include <sys/user.h> /* After a.out.h */ -#include <sys/file.h> -#include "gdb_stat.h" - -#include <errno.h> - -void -fetch_inferior_registers (regno) - int regno; /* Original value discarded */ -{ - register unsigned int regaddr; - char buf[MAX_REGISTER_RAW_SIZE]; - register int i; - - struct user u; - unsigned int offset = (char *) &u.u_ar0 - (char *) &u; - offset = ptrace (PT_READ_U, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) - - KERNEL_U_ADDR; - - registers_fetched (); - - for (regno = 0; regno < 16; regno++) - { - regaddr = offset + regno * 4; - *(int *) &buf[0] = ptrace (PT_READ_U, inferior_pid, - (PTRACE_ARG3_TYPE) regaddr, 0); - if (regno == PC_REGNUM) - *(int *) &buf[0] = GET_PC_PART (*(int *) &buf[0]); - supply_register (regno, buf); - } - *(int *) &buf[0] = ptrace (PT_READ_U, inferior_pid, - (PTRACE_ARG3_TYPE) (offset + PC * 4), 0); - supply_register (PS_REGNUM, buf); /* set virtual register ps same as pc */ - - /* read the floating point registers */ - offset = (char *) &u.u_fp_regs - (char *) &u; - *(int *) buf = ptrace (PT_READ_U, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0); - supply_register (FPS_REGNUM, buf); - for (regno = 16; regno < 24; regno++) - { - regaddr = offset + 4 + 12 * (regno - 16); - for (i = 0; i < 12; i += sizeof (int)) - *(int *) &buf[i] = ptrace (PT_READ_U, inferior_pid, - (PTRACE_ARG3_TYPE) (regaddr + i), 0); - supply_register (regno, buf); - } -} - -/* Store our register values back into the inferior. - If REGNO is -1, do this for all registers. - Otherwise, REGNO specifies which register (so we can save time). */ - -void -store_inferior_registers (regno) - int regno; -{ - register unsigned int regaddr; - char buf[80]; - - struct user u; - unsigned long value; - unsigned int offset = (char *) &u.u_ar0 - (char *) &u; - offset = ptrace (PT_READ_U, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) - - KERNEL_U_ADDR; - - if (regno >= 0) - { - if (regno >= 16) - return; - regaddr = offset + 4 * regno; - errno = 0; - value = read_register (regno); - if (regno == PC_REGNUM) - value = SET_PC_PART (read_register (PS_REGNUM), value); - ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, value); - if (errno != 0) - { - sprintf (buf, "writing register number %d", regno); - perror_with_name (buf); - } - } - else - for (regno = 0; regno < 15; regno++) - { - regaddr = offset + regno * 4; - errno = 0; - value = read_register (regno); - if (regno == PC_REGNUM) - value = SET_PC_PART (read_register (PS_REGNUM), value); - ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, value); - if (errno != 0) - { - sprintf (buf, "writing all regs, number %d", regno); - perror_with_name (buf); - } - } -} - -/* Work with core dump and executable files, for GDB. - This code would be in corefile.c if it weren't machine-dependent. */ - -/* Structure to describe the chain of shared libraries used - by the execfile. - e.g. prog shares Xt which shares X11 which shares c. */ - -struct shared_library -{ - struct exec_header header; - char name[SHLIBLEN]; - CORE_ADDR text_start; /* CORE_ADDR of 1st byte of text, this file */ - long data_offset; /* offset of data section in file */ - int chan; /* file descriptor for the file */ - struct shared_library *shares; /* library this one shares */ -}; -static struct shared_library *shlib = 0; - -/* Hook for `exec_file_command' command to call. */ - -extern void (*exec_file_display_hook) (); - -static CORE_ADDR unshared_text_start; - -/* extended header from exec file (for shared library info) */ - -static struct exec_header exec_header; - -void -core_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int val; - - /* 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, fp_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 = stack_end - 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 = (int) u.u_ar0; - if (reg_offset > NBPG * UPAGES) - reg_offset -= KERNEL_U_ADDR; - fp_reg_offset = (char *) &u.u_fp_regs - (char *) &u; - - /* 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]; - - if (regno < 16) - val = lseek (corechan, reg_offset + 4 * regno, 0); - else if (regno < 24) - val = lseek (corechan, fp_reg_offset + 4 + 12 * (regno - 24), 0); - else if (regno == 24) - val = lseek (corechan, fp_reg_offset, 0); - else if (regno == 25) - val = lseek (corechan, reg_offset + 4 * PC, 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); - } - - if (regno == PC_REGNUM) - *(int *) buf = GET_PC_PART (*(int *) buf); - 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 ("No core file now.\n"); -} - -#if 0 -/* Work with core dump and executable files, for GDB. - This code would be in corefile.c if it weren't machine-dependent. */ - -/* Structure to describe the chain of shared libraries used - by the execfile. - e.g. prog shares Xt which shares X11 which shares c. */ - -struct shared_library -{ - struct exec_header header; - char name[SHLIBLEN]; - CORE_ADDR text_start; /* CORE_ADDR of 1st byte of text, this file */ - long data_offset; /* offset of data section in file */ - int chan; /* file descriptor for the file */ - struct shared_library *shares; /* library this one shares */ -}; -static struct shared_library *shlib = 0; - -/* Hook for `exec_file_command' command to call. */ - -extern void (*exec_file_display_hook) (); - -static CORE_ADDR unshared_text_start; - -/* extended header from exec file (for shared library info) */ - -static struct exec_header exec_header; - -void -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; - unshared_text_start = 0; - text_end = 0; - exec_data_start = 0; - exec_data_end = 0; - if (execchan >= 0) - close (execchan); - execchan = -1; - if (shlib) - { - close_shared_library (shlib); - shlib = 0; - } - - /* Now open and digest the file the user requested, if any. */ - - if (filename) - { - filename = tilde_expand (filename); - make_cleanup (free, filename); - - execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, - &execfile); - if (execchan < 0) - perror_with_name (filename); - - { - struct stat st_exec; - -#ifdef HEADER_SEEK_FD - HEADER_SEEK_FD (execchan); -#endif - - val = myread (execchan, &exec_header, sizeof exec_header); - exec_aouthdr = exec_header.a_exec; - - if (val < 0) - perror_with_name (filename); - - text_start = 0x8000; - - /* Look for shared library if needed */ - if (exec_header.a_exec.a_magic & MF_USES_SL) - shlib = open_shared_library (exec_header.a_shlibname, text_start); - - text_offset = N_TXTOFF (exec_aouthdr); - exec_data_offset = N_TXTOFF (exec_aouthdr) + exec_aouthdr.a_text; - - if (shlib) - { - unshared_text_start = shared_text_end (shlib) & ~0x7fff; - stack_start = shlib->header.a_exec.a_sldatabase; - stack_end = STACK_END_ADDR; - } - else - unshared_text_start = 0x8000; - text_end = unshared_text_start + exec_aouthdr.a_text; - - exec_data_start = unshared_text_start + exec_aouthdr.a_text; - exec_data_end = exec_data_start + exec_aouthdr.a_data; - - data_start = exec_data_start; - data_end += exec_data_start; - - fstat (execchan, &st_exec); - exec_mtime = st_exec.st_mtime; - } - - validate_files (); - } - else if (from_tty) - printf ("No executable file now.\n"); - - /* Tell display code (if any) about the changed file name. */ - if (exec_file_display_hook) - (*exec_file_display_hook) (filename); -} -#endif - -#if 0 -/* Read from the program's memory (except for inferior processes). - This function is misnamed, since it only reads, never writes; and - since it will use the core file and/or executable file as necessary. - - It should be extended to write as well as read, FIXME, for patching files. - - Return 0 if address could be read, EIO if addresss out of bounds. */ - -int -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; - int returnval = 0; - - 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. - - We put the most likely tests first for efficiency. */ - - /* Note that if there is no core file - data_start and data_end are equal. */ - 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 define the shared library data. */ - else if (memaddr >= stack_start && memaddr < stack_end) - { - if (corechan < 0) - { - struct shared_library *lib; - for (lib = shlib; lib; lib = lib->shares) - if (memaddr >= lib->header.a_exec.a_sldatabase && - memaddr < lib->header.a_exec.a_sldatabase + - lib->header.a_exec.a_data) - break; - if (lib) - { - i = min (len, lib->header.a_exec.a_sldatabase + - lib->header.a_exec.a_data - memaddr); - fileptr = lib->data_offset + memaddr - - lib->header.a_exec.a_sldatabase; - xferfile = execfile; - xferchan = lib->chan; - } - } - else - { - 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) - { - struct shared_library *lib; - for (lib = shlib; lib; lib = lib->shares) - if (memaddr >= lib->text_start && - memaddr < lib->text_start + lib->header.a_exec.a_text) - break; - if (lib) - { - i = min (len, lib->header.a_exec.a_text + - lib->text_start - memaddr); - fileptr = memaddr - lib->text_start + text_offset; - xferfile = &execfile; - xferchan = lib->chan; - } - else - { - i = min (len, text_end - memaddr); - fileptr = memaddr - unshared_text_start + text_offset; - xferfile = &execfile; - xferchan = execchan; - } - } - else if (memaddr < text_start) - { - i = min (len, text_start - memaddr); - } - else if (memaddr >= text_end - && memaddr < (corechan >= 0 ? data_start : exec_data_start)) - { - i = min (len, data_start - memaddr); - } - else if (corechan >= 0 - && memaddr >= data_end && memaddr < stack_start) - { - i = min (len, stack_start - memaddr); - } - else if (corechan < 0 && memaddr >= exec_data_end) - { - i = min (len, -memaddr); - } - else if (memaddr >= stack_end && stack_end != 0) - { - i = min (len, -memaddr); - } - else - { - /* Address did not classify into one of the known ranges. - This shouldn't happen; we catch the endpoints. */ - internal_error ("Bad case logic in xfer_core_file."); - } - - /* 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. - Actually, we never right. */ - else - { - memset (myaddr, '\0', i); - returnval = EIO; - } - - memaddr += i; - myaddr += i; - len -= i; - } - return returnval; -} -#endif +/* OBSOLETE /* Acorn Risc Machine host machine support. */ +/* OBSOLETE Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. */ +/* OBSOLETE */ +/* OBSOLETE This file is part of GDB. */ +/* OBSOLETE */ +/* OBSOLETE This program is free software; you can redistribute it and/or modify */ +/* OBSOLETE it under the terms of the GNU General Public License as published by */ +/* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ +/* OBSOLETE (at your option) any later version. */ +/* OBSOLETE */ +/* OBSOLETE This program is distributed in the hope that it will be useful, */ +/* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ +/* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ +/* OBSOLETE GNU General Public License for more details. */ +/* OBSOLETE */ +/* OBSOLETE You should have received a copy of the GNU General Public License */ +/* OBSOLETE along with this program; if not, write to the Free Software */ +/* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */ +/* OBSOLETE Boston, MA 02111-1307, USA. *x/ */ +/* OBSOLETE */ +/* OBSOLETE #include "defs.h" */ +/* OBSOLETE #include "frame.h" */ +/* OBSOLETE #include "inferior.h" */ +/* OBSOLETE #include "opcode/arm.h" */ +/* OBSOLETE */ +/* OBSOLETE #include <sys/param.h> */ +/* OBSOLETE #include <sys/dir.h> */ +/* OBSOLETE #include <signal.h> */ +/* OBSOLETE #include <sys/ioctl.h> */ +/* OBSOLETE #include <sys/ptrace.h> */ +/* OBSOLETE #include <machine/reg.h> */ +/* OBSOLETE */ +/* OBSOLETE #define N_TXTADDR(hdr) 0x8000 */ +/* OBSOLETE #define N_DATADDR(hdr) (hdr.a_text + 0x8000) */ +/* OBSOLETE */ +/* OBSOLETE #include "gdbcore.h" */ +/* OBSOLETE */ +/* OBSOLETE #include <sys/user.h> /* After a.out.h *x/ */ +/* OBSOLETE #include <sys/file.h> */ +/* OBSOLETE #include "gdb_stat.h" */ +/* OBSOLETE */ +/* OBSOLETE #include <errno.h> */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE fetch_inferior_registers (regno) */ +/* OBSOLETE int regno; /* Original value discarded *x/ */ +/* OBSOLETE { */ +/* OBSOLETE register unsigned int regaddr; */ +/* OBSOLETE char buf[MAX_REGISTER_RAW_SIZE]; */ +/* OBSOLETE register int i; */ +/* OBSOLETE */ +/* OBSOLETE struct user u; */ +/* OBSOLETE unsigned int offset = (char *) &u.u_ar0 - (char *) &u; */ +/* OBSOLETE offset = ptrace (PT_READ_U, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) */ +/* OBSOLETE - KERNEL_U_ADDR; */ +/* OBSOLETE */ +/* OBSOLETE registers_fetched (); */ +/* OBSOLETE */ +/* OBSOLETE for (regno = 0; regno < 16; regno++) */ +/* OBSOLETE { */ +/* OBSOLETE regaddr = offset + regno * 4; */ +/* OBSOLETE *(int *) &buf[0] = ptrace (PT_READ_U, inferior_pid, */ +/* OBSOLETE (PTRACE_ARG3_TYPE) regaddr, 0); */ +/* OBSOLETE if (regno == PC_REGNUM) */ +/* OBSOLETE *(int *) &buf[0] = GET_PC_PART (*(int *) &buf[0]); */ +/* OBSOLETE supply_register (regno, buf); */ +/* OBSOLETE } */ +/* OBSOLETE *(int *) &buf[0] = ptrace (PT_READ_U, inferior_pid, */ +/* OBSOLETE (PTRACE_ARG3_TYPE) (offset + PC * 4), 0); */ +/* OBSOLETE supply_register (PS_REGNUM, buf); /* set virtual register ps same as pc *x/ */ +/* OBSOLETE */ +/* OBSOLETE /* read the floating point registers *x/ */ +/* OBSOLETE offset = (char *) &u.u_fp_regs - (char *) &u; */ +/* OBSOLETE *(int *) buf = ptrace (PT_READ_U, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0); */ +/* OBSOLETE supply_register (FPS_REGNUM, buf); */ +/* OBSOLETE for (regno = 16; regno < 24; regno++) */ +/* OBSOLETE { */ +/* OBSOLETE regaddr = offset + 4 + 12 * (regno - 16); */ +/* OBSOLETE for (i = 0; i < 12; i += sizeof (int)) */ +/* OBSOLETE *(int *) &buf[i] = ptrace (PT_READ_U, inferior_pid, */ +/* OBSOLETE (PTRACE_ARG3_TYPE) (regaddr + i), 0); */ +/* OBSOLETE supply_register (regno, buf); */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Store our register values back into the inferior. */ +/* OBSOLETE If REGNO is -1, do this for all registers. */ +/* OBSOLETE Otherwise, REGNO specifies which register (so we can save time). *x/ */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE store_inferior_registers (regno) */ +/* OBSOLETE int regno; */ +/* OBSOLETE { */ +/* OBSOLETE register unsigned int regaddr; */ +/* OBSOLETE char buf[80]; */ +/* OBSOLETE */ +/* OBSOLETE struct user u; */ +/* OBSOLETE unsigned long value; */ +/* OBSOLETE unsigned int offset = (char *) &u.u_ar0 - (char *) &u; */ +/* OBSOLETE offset = ptrace (PT_READ_U, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) */ +/* OBSOLETE - KERNEL_U_ADDR; */ +/* OBSOLETE */ +/* OBSOLETE if (regno >= 0) */ +/* OBSOLETE { */ +/* OBSOLETE if (regno >= 16) */ +/* OBSOLETE return; */ +/* OBSOLETE regaddr = offset + 4 * regno; */ +/* OBSOLETE errno = 0; */ +/* OBSOLETE value = read_register (regno); */ +/* OBSOLETE if (regno == PC_REGNUM) */ +/* OBSOLETE value = SET_PC_PART (read_register (PS_REGNUM), value); */ +/* OBSOLETE ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, value); */ +/* OBSOLETE if (errno != 0) */ +/* OBSOLETE { */ +/* OBSOLETE sprintf (buf, "writing register number %d", regno); */ +/* OBSOLETE perror_with_name (buf); */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE for (regno = 0; regno < 15; regno++) */ +/* OBSOLETE { */ +/* OBSOLETE regaddr = offset + regno * 4; */ +/* OBSOLETE errno = 0; */ +/* OBSOLETE value = read_register (regno); */ +/* OBSOLETE if (regno == PC_REGNUM) */ +/* OBSOLETE value = SET_PC_PART (read_register (PS_REGNUM), value); */ +/* OBSOLETE ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, value); */ +/* OBSOLETE if (errno != 0) */ +/* OBSOLETE { */ +/* OBSOLETE sprintf (buf, "writing all regs, number %d", regno); */ +/* OBSOLETE perror_with_name (buf); */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Work with core dump and executable files, for GDB. */ +/* OBSOLETE This code would be in corefile.c if it weren't machine-dependent. *x/ */ +/* OBSOLETE */ +/* OBSOLETE /* Structure to describe the chain of shared libraries used */ +/* OBSOLETE by the execfile. */ +/* OBSOLETE e.g. prog shares Xt which shares X11 which shares c. *x/ */ +/* OBSOLETE */ +/* OBSOLETE struct shared_library */ +/* OBSOLETE { */ +/* OBSOLETE struct exec_header header; */ +/* OBSOLETE char name[SHLIBLEN]; */ +/* OBSOLETE CORE_ADDR text_start; /* CORE_ADDR of 1st byte of text, this file *x/ */ +/* OBSOLETE long data_offset; /* offset of data section in file *x/ */ +/* OBSOLETE int chan; /* file descriptor for the file *x/ */ +/* OBSOLETE struct shared_library *shares; /* library this one shares *x/ */ +/* OBSOLETE }; */ +/* OBSOLETE static struct shared_library *shlib = 0; */ +/* OBSOLETE */ +/* OBSOLETE /* Hook for `exec_file_command' command to call. *x/ */ +/* OBSOLETE */ +/* OBSOLETE extern void (*exec_file_display_hook) (); */ +/* OBSOLETE */ +/* OBSOLETE static CORE_ADDR unshared_text_start; */ +/* OBSOLETE */ +/* OBSOLETE /* extended header from exec file (for shared library info) *x/ */ +/* OBSOLETE */ +/* OBSOLETE static struct exec_header exec_header; */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE core_file_command (filename, from_tty) */ +/* OBSOLETE char *filename; */ +/* OBSOLETE int from_tty; */ +/* OBSOLETE { */ +/* OBSOLETE int val; */ +/* OBSOLETE */ +/* OBSOLETE /* Discard all vestiges of any previous core file */ +/* OBSOLETE and mark data and stack spaces as empty. *x/ */ +/* OBSOLETE */ +/* OBSOLETE if (corefile) */ +/* OBSOLETE free (corefile); */ +/* OBSOLETE corefile = 0; */ +/* OBSOLETE */ +/* OBSOLETE if (corechan >= 0) */ +/* OBSOLETE close (corechan); */ +/* OBSOLETE corechan = -1; */ +/* OBSOLETE */ +/* OBSOLETE data_start = 0; */ +/* OBSOLETE data_end = 0; */ +/* OBSOLETE stack_start = STACK_END_ADDR; */ +/* OBSOLETE stack_end = STACK_END_ADDR; */ +/* OBSOLETE */ +/* OBSOLETE /* Now, if a new core file was specified, open it and digest it. *x/ */ +/* OBSOLETE */ +/* OBSOLETE if (filename) */ +/* OBSOLETE { */ +/* OBSOLETE filename = tilde_expand (filename); */ +/* OBSOLETE make_cleanup (free, filename); */ +/* OBSOLETE */ +/* OBSOLETE if (have_inferior_p ()) */ +/* OBSOLETE error ("To look at a core file, you must kill the program with \"kill\"."); */ +/* OBSOLETE corechan = open (filename, O_RDONLY, 0); */ +/* OBSOLETE if (corechan < 0) */ +/* OBSOLETE perror_with_name (filename); */ +/* OBSOLETE /* 4.2-style (and perhaps also sysV-style) core dump file. *x/ */ +/* OBSOLETE { */ +/* OBSOLETE struct user u; */ +/* OBSOLETE */ +/* OBSOLETE unsigned int reg_offset, fp_reg_offset; */ +/* OBSOLETE */ +/* OBSOLETE val = myread (corechan, &u, sizeof u); */ +/* OBSOLETE if (val < 0) */ +/* OBSOLETE perror_with_name ("Not a core file: reading upage"); */ +/* OBSOLETE if (val != sizeof u) */ +/* OBSOLETE error ("Not a core file: could only read %d bytes", val); */ +/* OBSOLETE */ +/* OBSOLETE /* We are depending on exec_file_command having been called */ +/* OBSOLETE previously to set exec_data_start. Since the executable */ +/* OBSOLETE and the core file share the same text segment, the address */ +/* OBSOLETE of the data segment will be the same in both. *x/ */ +/* OBSOLETE data_start = exec_data_start; */ +/* OBSOLETE */ +/* OBSOLETE data_end = data_start + NBPG * u.u_dsize; */ +/* OBSOLETE stack_start = stack_end - NBPG * u.u_ssize; */ +/* OBSOLETE data_offset = NBPG * UPAGES; */ +/* OBSOLETE stack_offset = NBPG * (UPAGES + u.u_dsize); */ +/* OBSOLETE */ +/* OBSOLETE /* Some machines put an absolute address in here and some put */ +/* OBSOLETE the offset in the upage of the regs. *x/ */ +/* OBSOLETE reg_offset = (int) u.u_ar0; */ +/* OBSOLETE if (reg_offset > NBPG * UPAGES) */ +/* OBSOLETE reg_offset -= KERNEL_U_ADDR; */ +/* OBSOLETE fp_reg_offset = (char *) &u.u_fp_regs - (char *) &u; */ +/* OBSOLETE */ +/* OBSOLETE /* I don't know where to find this info. */ +/* OBSOLETE So, for now, mark it as not available. *x/ */ +/* OBSOLETE N_SET_MAGIC (core_aouthdr, 0); */ +/* OBSOLETE */ +/* OBSOLETE /* Read the register values out of the core file and store */ +/* OBSOLETE them where `read_register' will find them. *x/ */ +/* OBSOLETE */ +/* OBSOLETE { */ +/* OBSOLETE register int regno; */ +/* OBSOLETE */ +/* OBSOLETE for (regno = 0; regno < NUM_REGS; regno++) */ +/* OBSOLETE { */ +/* OBSOLETE char buf[MAX_REGISTER_RAW_SIZE]; */ +/* OBSOLETE */ +/* OBSOLETE if (regno < 16) */ +/* OBSOLETE val = lseek (corechan, reg_offset + 4 * regno, 0); */ +/* OBSOLETE else if (regno < 24) */ +/* OBSOLETE val = lseek (corechan, fp_reg_offset + 4 + 12 * (regno - 24), 0); */ +/* OBSOLETE else if (regno == 24) */ +/* OBSOLETE val = lseek (corechan, fp_reg_offset, 0); */ +/* OBSOLETE else if (regno == 25) */ +/* OBSOLETE val = lseek (corechan, reg_offset + 4 * PC, 0); */ +/* OBSOLETE if (val < 0 */ +/* OBSOLETE || (val = myread (corechan, buf, sizeof buf)) < 0) */ +/* OBSOLETE { */ +/* OBSOLETE char *buffer = (char *) alloca (strlen (REGISTER_NAME (regno)) */ +/* OBSOLETE + 30); */ +/* OBSOLETE strcpy (buffer, "Reading register "); */ +/* OBSOLETE strcat (buffer, REGISTER_NAME (regno)); */ +/* OBSOLETE */ +/* OBSOLETE perror_with_name (buffer); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE if (regno == PC_REGNUM) */ +/* OBSOLETE *(int *) buf = GET_PC_PART (*(int *) buf); */ +/* OBSOLETE supply_register (regno, buf); */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE if (filename[0] == '/') */ +/* OBSOLETE corefile = savestring (filename, strlen (filename)); */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE corefile = concat (current_directory, "/", filename, NULL); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE flush_cached_frames (); */ +/* OBSOLETE select_frame (get_current_frame (), 0); */ +/* OBSOLETE validate_files (); */ +/* OBSOLETE } */ +/* OBSOLETE else if (from_tty) */ +/* OBSOLETE printf ("No core file now.\n"); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE #if 0 */ +/* OBSOLETE /* Work with core dump and executable files, for GDB. */ +/* OBSOLETE This code would be in corefile.c if it weren't machine-dependent. *x/ */ +/* OBSOLETE */ +/* OBSOLETE /* Structure to describe the chain of shared libraries used */ +/* OBSOLETE by the execfile. */ +/* OBSOLETE e.g. prog shares Xt which shares X11 which shares c. *x/ */ +/* OBSOLETE */ +/* OBSOLETE struct shared_library */ +/* OBSOLETE { */ +/* OBSOLETE struct exec_header header; */ +/* OBSOLETE char name[SHLIBLEN]; */ +/* OBSOLETE CORE_ADDR text_start; /* CORE_ADDR of 1st byte of text, this file *x/ */ +/* OBSOLETE long data_offset; /* offset of data section in file *x/ */ +/* OBSOLETE int chan; /* file descriptor for the file *x/ */ +/* OBSOLETE struct shared_library *shares; /* library this one shares *x/ */ +/* OBSOLETE }; */ +/* OBSOLETE static struct shared_library *shlib = 0; */ +/* OBSOLETE */ +/* OBSOLETE /* Hook for `exec_file_command' command to call. *x/ */ +/* OBSOLETE */ +/* OBSOLETE extern void (*exec_file_display_hook) (); */ +/* OBSOLETE */ +/* OBSOLETE static CORE_ADDR unshared_text_start; */ +/* OBSOLETE */ +/* OBSOLETE /* extended header from exec file (for shared library info) *x/ */ +/* OBSOLETE */ +/* OBSOLETE static struct exec_header exec_header; */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE exec_file_command (filename, from_tty) */ +/* OBSOLETE char *filename; */ +/* OBSOLETE int from_tty; */ +/* OBSOLETE { */ +/* OBSOLETE int val; */ +/* OBSOLETE */ +/* OBSOLETE /* Eliminate all traces of old exec file. */ +/* OBSOLETE Mark text segment as empty. *x/ */ +/* OBSOLETE */ +/* OBSOLETE if (execfile) */ +/* OBSOLETE free (execfile); */ +/* OBSOLETE execfile = 0; */ +/* OBSOLETE data_start = 0; */ +/* OBSOLETE data_end -= exec_data_start; */ +/* OBSOLETE text_start = 0; */ +/* OBSOLETE unshared_text_start = 0; */ +/* OBSOLETE text_end = 0; */ +/* OBSOLETE exec_data_start = 0; */ +/* OBSOLETE exec_data_end = 0; */ +/* OBSOLETE if (execchan >= 0) */ +/* OBSOLETE close (execchan); */ +/* OBSOLETE execchan = -1; */ +/* OBSOLETE if (shlib) */ +/* OBSOLETE { */ +/* OBSOLETE close_shared_library (shlib); */ +/* OBSOLETE shlib = 0; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Now open and digest the file the user requested, if any. *x/ */ +/* OBSOLETE */ +/* OBSOLETE if (filename) */ +/* OBSOLETE { */ +/* OBSOLETE filename = tilde_expand (filename); */ +/* OBSOLETE make_cleanup (free, filename); */ +/* OBSOLETE */ +/* OBSOLETE execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, */ +/* OBSOLETE &execfile); */ +/* OBSOLETE if (execchan < 0) */ +/* OBSOLETE perror_with_name (filename); */ +/* OBSOLETE */ +/* OBSOLETE { */ +/* OBSOLETE struct stat st_exec; */ +/* OBSOLETE */ +/* OBSOLETE #ifdef HEADER_SEEK_FD */ +/* OBSOLETE HEADER_SEEK_FD (execchan); */ +/* OBSOLETE #endif */ +/* OBSOLETE */ +/* OBSOLETE val = myread (execchan, &exec_header, sizeof exec_header); */ +/* OBSOLETE exec_aouthdr = exec_header.a_exec; */ +/* OBSOLETE */ +/* OBSOLETE if (val < 0) */ +/* OBSOLETE perror_with_name (filename); */ +/* OBSOLETE */ +/* OBSOLETE text_start = 0x8000; */ +/* OBSOLETE */ +/* OBSOLETE /* Look for shared library if needed *x/ */ +/* OBSOLETE if (exec_header.a_exec.a_magic & MF_USES_SL) */ +/* OBSOLETE shlib = open_shared_library (exec_header.a_shlibname, text_start); */ +/* OBSOLETE */ +/* OBSOLETE text_offset = N_TXTOFF (exec_aouthdr); */ +/* OBSOLETE exec_data_offset = N_TXTOFF (exec_aouthdr) + exec_aouthdr.a_text; */ +/* OBSOLETE */ +/* OBSOLETE if (shlib) */ +/* OBSOLETE { */ +/* OBSOLETE unshared_text_start = shared_text_end (shlib) & ~0x7fff; */ +/* OBSOLETE stack_start = shlib->header.a_exec.a_sldatabase; */ +/* OBSOLETE stack_end = STACK_END_ADDR; */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE unshared_text_start = 0x8000; */ +/* OBSOLETE text_end = unshared_text_start + exec_aouthdr.a_text; */ +/* OBSOLETE */ +/* OBSOLETE exec_data_start = unshared_text_start + exec_aouthdr.a_text; */ +/* OBSOLETE exec_data_end = exec_data_start + exec_aouthdr.a_data; */ +/* OBSOLETE */ +/* OBSOLETE data_start = exec_data_start; */ +/* OBSOLETE data_end += exec_data_start; */ +/* OBSOLETE */ +/* OBSOLETE fstat (execchan, &st_exec); */ +/* OBSOLETE exec_mtime = st_exec.st_mtime; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE validate_files (); */ +/* OBSOLETE } */ +/* OBSOLETE else if (from_tty) */ +/* OBSOLETE printf ("No executable file now.\n"); */ +/* OBSOLETE */ +/* OBSOLETE /* Tell display code (if any) about the changed file name. *x/ */ +/* OBSOLETE if (exec_file_display_hook) */ +/* OBSOLETE (*exec_file_display_hook) (filename); */ +/* OBSOLETE } */ +/* OBSOLETE #endif */ +/* OBSOLETE */ +/* OBSOLETE #if 0 */ +/* OBSOLETE /* Read from the program's memory (except for inferior processes). */ +/* OBSOLETE This function is misnamed, since it only reads, never writes; and */ +/* OBSOLETE since it will use the core file and/or executable file as necessary. */ +/* OBSOLETE */ +/* OBSOLETE It should be extended to write as well as read, FIXME, for patching files. */ +/* OBSOLETE */ +/* OBSOLETE Return 0 if address could be read, EIO if addresss out of bounds. *x/ */ +/* OBSOLETE */ +/* OBSOLETE int */ +/* OBSOLETE xfer_core_file (memaddr, myaddr, len) */ +/* OBSOLETE CORE_ADDR memaddr; */ +/* OBSOLETE char *myaddr; */ +/* OBSOLETE int len; */ +/* OBSOLETE { */ +/* OBSOLETE register int i; */ +/* OBSOLETE register int val; */ +/* OBSOLETE int xferchan; */ +/* OBSOLETE char **xferfile; */ +/* OBSOLETE int fileptr; */ +/* OBSOLETE int returnval = 0; */ +/* OBSOLETE */ +/* OBSOLETE while (len > 0) */ +/* OBSOLETE { */ +/* OBSOLETE xferfile = 0; */ +/* OBSOLETE xferchan = 0; */ +/* OBSOLETE */ +/* OBSOLETE /* Determine which file the next bunch of addresses reside in, */ +/* OBSOLETE and where in the file. Set the file's read/write pointer */ +/* OBSOLETE to point at the proper place for the desired address */ +/* OBSOLETE and set xferfile and xferchan for the correct file. */ +/* OBSOLETE */ +/* OBSOLETE If desired address is nonexistent, leave them zero. */ +/* OBSOLETE */ +/* OBSOLETE i is set to the number of bytes that can be handled */ +/* OBSOLETE along with the next address. */ +/* OBSOLETE */ +/* OBSOLETE We put the most likely tests first for efficiency. *x/ */ +/* OBSOLETE */ +/* OBSOLETE /* Note that if there is no core file */ +/* OBSOLETE data_start and data_end are equal. *x/ */ +/* OBSOLETE if (memaddr >= data_start && memaddr < data_end) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, data_end - memaddr); */ +/* OBSOLETE fileptr = memaddr - data_start + data_offset; */ +/* OBSOLETE xferfile = &corefile; */ +/* OBSOLETE xferchan = corechan; */ +/* OBSOLETE } */ +/* OBSOLETE /* Note that if there is no core file */ +/* OBSOLETE stack_start and stack_end define the shared library data. *x/ */ +/* OBSOLETE else if (memaddr >= stack_start && memaddr < stack_end) */ +/* OBSOLETE { */ +/* OBSOLETE if (corechan < 0) */ +/* OBSOLETE { */ +/* OBSOLETE struct shared_library *lib; */ +/* OBSOLETE for (lib = shlib; lib; lib = lib->shares) */ +/* OBSOLETE if (memaddr >= lib->header.a_exec.a_sldatabase && */ +/* OBSOLETE memaddr < lib->header.a_exec.a_sldatabase + */ +/* OBSOLETE lib->header.a_exec.a_data) */ +/* OBSOLETE break; */ +/* OBSOLETE if (lib) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, lib->header.a_exec.a_sldatabase + */ +/* OBSOLETE lib->header.a_exec.a_data - memaddr); */ +/* OBSOLETE fileptr = lib->data_offset + memaddr - */ +/* OBSOLETE lib->header.a_exec.a_sldatabase; */ +/* OBSOLETE xferfile = execfile; */ +/* OBSOLETE xferchan = lib->chan; */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, stack_end - memaddr); */ +/* OBSOLETE fileptr = memaddr - stack_start + stack_offset; */ +/* OBSOLETE xferfile = &corefile; */ +/* OBSOLETE xferchan = corechan; */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE else if (corechan < 0 */ +/* OBSOLETE && memaddr >= exec_data_start && memaddr < exec_data_end) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, exec_data_end - memaddr); */ +/* OBSOLETE fileptr = memaddr - exec_data_start + exec_data_offset; */ +/* OBSOLETE xferfile = &execfile; */ +/* OBSOLETE xferchan = execchan; */ +/* OBSOLETE } */ +/* OBSOLETE else if (memaddr >= text_start && memaddr < text_end) */ +/* OBSOLETE { */ +/* OBSOLETE struct shared_library *lib; */ +/* OBSOLETE for (lib = shlib; lib; lib = lib->shares) */ +/* OBSOLETE if (memaddr >= lib->text_start && */ +/* OBSOLETE memaddr < lib->text_start + lib->header.a_exec.a_text) */ +/* OBSOLETE break; */ +/* OBSOLETE if (lib) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, lib->header.a_exec.a_text + */ +/* OBSOLETE lib->text_start - memaddr); */ +/* OBSOLETE fileptr = memaddr - lib->text_start + text_offset; */ +/* OBSOLETE xferfile = &execfile; */ +/* OBSOLETE xferchan = lib->chan; */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, text_end - memaddr); */ +/* OBSOLETE fileptr = memaddr - unshared_text_start + text_offset; */ +/* OBSOLETE xferfile = &execfile; */ +/* OBSOLETE xferchan = execchan; */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE else if (memaddr < text_start) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, text_start - memaddr); */ +/* OBSOLETE } */ +/* OBSOLETE else if (memaddr >= text_end */ +/* OBSOLETE && memaddr < (corechan >= 0 ? data_start : exec_data_start)) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, data_start - memaddr); */ +/* OBSOLETE } */ +/* OBSOLETE else if (corechan >= 0 */ +/* OBSOLETE && memaddr >= data_end && memaddr < stack_start) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, stack_start - memaddr); */ +/* OBSOLETE } */ +/* OBSOLETE else if (corechan < 0 && memaddr >= exec_data_end) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, -memaddr); */ +/* OBSOLETE } */ +/* OBSOLETE else if (memaddr >= stack_end && stack_end != 0) */ +/* OBSOLETE { */ +/* OBSOLETE i = min (len, -memaddr); */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE /* Address did not classify into one of the known ranges. */ +/* OBSOLETE This shouldn't happen; we catch the endpoints. *x/ */ +/* OBSOLETE internal_error ("Bad case logic in xfer_core_file."); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Now we know which file to use. */ +/* OBSOLETE Set up its pointer and transfer the data. *x/ */ +/* OBSOLETE if (xferfile) */ +/* OBSOLETE { */ +/* OBSOLETE if (*xferfile == 0) */ +/* OBSOLETE if (xferfile == &execfile) */ +/* OBSOLETE error ("No program file to examine."); */ +/* OBSOLETE else */ +/* OBSOLETE error ("No core dump file or running program to examine."); */ +/* OBSOLETE val = lseek (xferchan, fileptr, 0); */ +/* OBSOLETE if (val < 0) */ +/* OBSOLETE perror_with_name (*xferfile); */ +/* OBSOLETE val = myread (xferchan, myaddr, i); */ +/* OBSOLETE if (val < 0) */ +/* OBSOLETE perror_with_name (*xferfile); */ +/* OBSOLETE } */ +/* OBSOLETE /* If this address is for nonexistent memory, */ +/* OBSOLETE read zeros if reading, or do nothing if writing. */ +/* OBSOLETE Actually, we never right. *x/ */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE memset (myaddr, '\0', i); */ +/* OBSOLETE returnval = EIO; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE memaddr += i; */ +/* OBSOLETE myaddr += i; */ +/* OBSOLETE len -= i; */ +/* OBSOLETE } */ +/* OBSOLETE return returnval; */ +/* OBSOLETE } */ +/* OBSOLETE #endif */ |