-/* Low level Pyramid interface to ptrace, for GDB when running under Unix.
- 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 <sys/param.h>
-#include <sys/dir.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-/* #include <fcntl.h> Can we live without this? */
-
-#include "gdbcore.h"
-#include <sys/user.h> /* After a.out.h */
-#include <sys/file.h>
-#include "gdb_stat.h"
-
-\f
-void
-fetch_inferior_registers (regno)
- int regno;
-{
- register int datum;
- register unsigned int regaddr;
- int reg_buf[NUM_REGS+1];
- struct user u;
- register int skipped_frames = 0;
-
- registers_fetched ();
-
- for (regno = 0; regno < 64; regno++) {
- reg_buf[regno] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) regno, 0);
-
-#if defined(PYRAMID_CONTROL_FRAME_DEBUGGING)
- printf_unfiltered ("Fetching register %s, got %0x\n",
- REGISTER_NAME (regno),
- reg_buf[regno]);
-#endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
-
- if (reg_buf[regno] == -1 && errno == EIO) {
- printf_unfiltered("fetch_interior_registers: fetching register %s\n",
- REGISTER_NAME (regno));
- errno = 0;
- }
- supply_register (regno, reg_buf+regno);
- }
- /* that leaves regs 64, 65, and 66 */
- datum = ptrace (3, inferior_pid,
- (PTRACE_ARG3_TYPE) (((char *)&u.u_pcb.pcb_csp) -
- ((char *)&u)), 0);
-
-
-
- /* FIXME: Find the Current Frame Pointer (CFP). CFP is a global
- register (ie, NOT windowed), that gets saved in a frame iff
- the code for that frame has a prologue (ie, "adsf N"). If
- there is a prologue, the adsf insn saves the old cfp in
- pr13, cfp is set to sp, and N bytes of locals are allocated
- (sp is decremented by n).
- This makes finding CFP hard. I guess the right way to do it
- is:
- - If this is the innermost frame, believe ptrace() or
- the core area.
- - Otherwise:
- Find the first insn of the current frame.
- - find the saved pc;
- - find the call insn that saved it;
- - figure out where the call is to;
- - if the first insn is an adsf, we got a frame
- pointer. */
-
-
- /* Normal processors have separate stack pointers for user and
- kernel mode. Getting the last user mode frame on such
- machines is easy: the kernel context of the ptrace()'d
- process is on the kernel stack, and the USP points to what
- we want. But Pyramids only have a single cfp for both user and
- kernel mode. And processes being ptrace()'d have some
- kernel-context control frames on their stack.
- To avoid tracing back into the kernel context of an inferior,
- we skip 0 or more contiguous control frames where the pc is
- in the kernel. */
-
- while (1) {
- register int inferior_saved_pc;
- inferior_saved_pc = ptrace (1, inferior_pid,
- (PTRACE_ARG3_TYPE) (datum+((32+15)*4)), 0);
- if (inferior_saved_pc > 0) break;
-#if defined(PYRAMID_CONTROL_FRAME_DEBUGGING)
- printf_unfiltered("skipping kernel frame %08x, pc=%08x\n", datum,
- inferior_saved_pc);
-#endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
- skipped_frames++;
- datum -= CONTROL_STACK_FRAME_SIZE;
- }
-
- reg_buf[CSP_REGNUM] = datum;
- supply_register(CSP_REGNUM, reg_buf+CSP_REGNUM);
-#ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
- if (skipped_frames) {
- fprintf_unfiltered (gdb_stderr,
- "skipped %d frames from %x to %x; cfp was %x, now %x\n",
- skipped_frames, reg_buf[CSP_REGNUM]);
- }
-#endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
-}
-
-/* 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];
-
- if (regno >= 0)
- {
- if ((0 <= regno) && (regno < 64)) {
- /*regaddr = register_addr (regno, offset);*/
- regaddr = regno;
- errno = 0;
- ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- read_register (regno));
- if (errno != 0)
- {
- sprintf (buf, "writing register number %d", regno);
- perror_with_name (buf);
- }
- }
- }
- else
- {
- for (regno = 0; regno < NUM_REGS; regno++)
- {
- /*regaddr = register_addr (regno, offset);*/
- regaddr = regno;
- errno = 0;
- ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
- read_register (regno));
- if (errno != 0)
- {
- sprintf (buf, "writing all regs, number %d", regno);
- perror_with_name (buf);
- }
- }
-}
-\f
-/*** Extensions to core and dump files, for GDB. */
-
-extern unsigned int last_frame_offset;
-
-#ifdef PYRAMID_CORE
-
-/* Can't make definitions here static, since corefile.c needs them
- to do bounds checking on the core-file areas. O well. */
-
-/* have two stacks: one for data, one for register windows. */
-extern CORE_ADDR reg_stack_start;
-extern CORE_ADDR reg_stack_end;
-
-/* need this so we can find the global registers: they never get saved. */
-CORE_ADDR global_reg_offset;
-static CORE_ADDR last_frame_address;
-CORE_ADDR last_frame_offset;
-
-
-/* Address in core file of start of register window stack area.
- Don't know if is this any of meaningful, useful or necessary. */
-extern int reg_stack_offset;
-
-#endif /* PYRAMID_CORE */
-
-\f
-/* 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;
-
- /* 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;
-
-#ifdef PYRAMID_CORE
- reg_stack_start = CONTROL_STACK_ADDR;
- reg_stack_end = CONTROL_STACK_ADDR; /* this isn't strictly true...*/
-#endif /* PYRAMID_CORE */
-
- /* 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;
-
- data_end = data_start + NBPG * u.u_dsize;
- data_offset = NBPG * UPAGES;
- stack_offset = NBPG * (UPAGES + u.u_dsize);
-
- /* find registers in core file */
-#ifdef PYRAMID_PTRACE
- stack_start = stack_end - NBPG * u.u_ussize;
- reg_stack_offset = stack_offset + (NBPG *u.u_ussize);
- reg_stack_end = reg_stack_start + NBPG * u.u_cssize;
-
- last_frame_address = ((int) u.u_pcb.pcb_csp);
- last_frame_offset = reg_stack_offset + last_frame_address
- - CONTROL_STACK_ADDR ;
- global_reg_offset = (char *)&u - (char *)&u.u_pcb.pcb_gr0 ;
-
- /* skip any control-stack frames that were executed in the
- kernel. */
-
- while (1) {
- char buf[4];
- val = lseek (corechan, last_frame_offset+(47*4), 0);
- if (val < 0)
- perror_with_name (filename);
- val = myread (corechan, buf, sizeof buf);
- if (val < 0)
- perror_with_name (filename);
-
- if (*(int *)buf >= 0)
- break;
- printf_unfiltered ("skipping frame %s\n", local_hex_string (last_frame_address));
- last_frame_offset -= CONTROL_STACK_FRAME_SIZE;
- last_frame_address -= CONTROL_STACK_FRAME_SIZE;
- }
- reg_offset = last_frame_offset;
-
-#if 1 || defined(PYRAMID_CONTROL_FRAME_DEBUGGING)
- printf_unfiltered ("Control stack pointer = %s\n",
- local_hex_string (u.u_pcb.pcb_csp));
- printf_unfiltered ("offset to control stack %d outermost frame %d (%s)\n",
- reg_stack_offset, reg_offset, local_hex_string (last_frame_address));
-#endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
-
-#else /* not PYRAMID_CORE */
- stack_start = stack_end - NBPG * u.u_ssize;
- reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR;
-#endif /* not PYRAMID_CORE */
-
-#ifdef __not_on_pyr_yet
- /* 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;
-#endif
-
- /* 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 < 64; 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);
- }
-
- if (val < 0)
- perror_with_name (filename);
-#ifdef PYRAMID_CONTROL_FRAME_DEBUGGING
- printf_unfiltered ("[reg %s(%d), offset in file %s=0x%0x, addr =0x%0x, =%0x]\n",
- REGISTER_NAME (regno), regno, filename,
- register_addr(regno, reg_offset),
- regno * 4 + last_frame_address,
- *((int *)buf));
-#endif /* PYRAMID_CONTROL_FRAME_DEBUGGING */
- supply_register (regno, buf);
- }
- }
- }
- if (filename[0] == '/')
- corefile = savestring (filename, strlen (filename));
- else
- {
- corefile = concat (current_directory, "/", filename, NULL);
- }
-
-#if 1 || defined(PYRAMID_CONTROL_FRAME_DEBUGGING)
- printf_unfiltered ("Providing CSP (%s) as nominal address of current frame.\n",
- local_hex_string(last_frame_address));
-#endif PYRAMID_CONTROL_FRAME_DEBUGGING
- /* FIXME: Which of the following is correct? */
-#if 0
- set_current_frame ( create_new_frame (read_register (FP_REGNUM),
- read_pc ()));
-#else
- set_current_frame ( create_new_frame (last_frame_address,
- read_pc ()));
-#endif
-
- select_frame (get_current_frame (), 0);
- validate_files ();
- }
- else if (from_tty)
- printf_unfiltered ("No core file now.\n");
-}
+/* OBSOLETE /* Low level Pyramid interface to ptrace, for GDB when running under Unix. */
+/* 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, Boston, MA 02111-1307, USA. *x/ */
+/* OBSOLETE */
+/* OBSOLETE #include "defs.h" */
+/* OBSOLETE #include "frame.h" */
+/* OBSOLETE #include "inferior.h" */
+/* OBSOLETE */
+/* OBSOLETE #include <sys/param.h> */
+/* OBSOLETE #include <sys/dir.h> */
+/* OBSOLETE #include <signal.h> */
+/* OBSOLETE #include <sys/ioctl.h> */
+/* OBSOLETE /* #include <fcntl.h> Can we live without this? *x/ */
+/* OBSOLETE */
+/* OBSOLETE #include "gdbcore.h" */
+/* OBSOLETE #include <sys/user.h> /* After a.out.h *x/ */
+/* OBSOLETE #include <sys/file.h> */
+/* OBSOLETE #include "gdb_stat.h" */
+/* OBSOLETE */
+/* OBSOLETE \f */
+/* OBSOLETE void */
+/* OBSOLETE fetch_inferior_registers (regno) */
+/* OBSOLETE int regno; */
+/* OBSOLETE { */
+/* OBSOLETE register int datum; */
+/* OBSOLETE register unsigned int regaddr; */
+/* OBSOLETE int reg_buf[NUM_REGS+1]; */
+/* OBSOLETE struct user u; */
+/* OBSOLETE register int skipped_frames = 0; */
+/* OBSOLETE */
+/* OBSOLETE registers_fetched (); */
+/* OBSOLETE */
+/* OBSOLETE for (regno = 0; regno < 64; regno++) { */
+/* OBSOLETE reg_buf[regno] = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) regno, 0); */
+/* OBSOLETE */
+/* OBSOLETE #if defined(PYRAMID_CONTROL_FRAME_DEBUGGING) */
+/* OBSOLETE printf_unfiltered ("Fetching register %s, got %0x\n", */
+/* OBSOLETE REGISTER_NAME (regno), */
+/* OBSOLETE reg_buf[regno]); */
+/* OBSOLETE #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING *x/ */
+/* OBSOLETE */
+/* OBSOLETE if (reg_buf[regno] == -1 && errno == EIO) { */
+/* OBSOLETE printf_unfiltered("fetch_interior_registers: fetching register %s\n", */
+/* OBSOLETE REGISTER_NAME (regno)); */
+/* OBSOLETE errno = 0; */
+/* OBSOLETE } */
+/* OBSOLETE supply_register (regno, reg_buf+regno); */
+/* OBSOLETE } */
+/* OBSOLETE /* that leaves regs 64, 65, and 66 *x/ */
+/* OBSOLETE datum = ptrace (3, inferior_pid, */
+/* OBSOLETE (PTRACE_ARG3_TYPE) (((char *)&u.u_pcb.pcb_csp) - */
+/* OBSOLETE ((char *)&u)), 0); */
+/* OBSOLETE */
+/* OBSOLETE */
+/* OBSOLETE */
+/* OBSOLETE /* FIXME: Find the Current Frame Pointer (CFP). CFP is a global */
+/* OBSOLETE register (ie, NOT windowed), that gets saved in a frame iff */
+/* OBSOLETE the code for that frame has a prologue (ie, "adsf N"). If */
+/* OBSOLETE there is a prologue, the adsf insn saves the old cfp in */
+/* OBSOLETE pr13, cfp is set to sp, and N bytes of locals are allocated */
+/* OBSOLETE (sp is decremented by n). */
+/* OBSOLETE This makes finding CFP hard. I guess the right way to do it */
+/* OBSOLETE is: */
+/* OBSOLETE - If this is the innermost frame, believe ptrace() or */
+/* OBSOLETE the core area. */
+/* OBSOLETE - Otherwise: */
+/* OBSOLETE Find the first insn of the current frame. */
+/* OBSOLETE - find the saved pc; */
+/* OBSOLETE - find the call insn that saved it; */
+/* OBSOLETE - figure out where the call is to; */
+/* OBSOLETE - if the first insn is an adsf, we got a frame */
+/* OBSOLETE pointer. *x/ */
+/* OBSOLETE */
+/* OBSOLETE */
+/* OBSOLETE /* Normal processors have separate stack pointers for user and */
+/* OBSOLETE kernel mode. Getting the last user mode frame on such */
+/* OBSOLETE machines is easy: the kernel context of the ptrace()'d */
+/* OBSOLETE process is on the kernel stack, and the USP points to what */
+/* OBSOLETE we want. But Pyramids only have a single cfp for both user and */
+/* OBSOLETE kernel mode. And processes being ptrace()'d have some */
+/* OBSOLETE kernel-context control frames on their stack. */
+/* OBSOLETE To avoid tracing back into the kernel context of an inferior, */
+/* OBSOLETE we skip 0 or more contiguous control frames where the pc is */
+/* OBSOLETE in the kernel. *x/ */
+/* OBSOLETE */
+/* OBSOLETE while (1) { */
+/* OBSOLETE register int inferior_saved_pc; */
+/* OBSOLETE inferior_saved_pc = ptrace (1, inferior_pid, */
+/* OBSOLETE (PTRACE_ARG3_TYPE) (datum+((32+15)*4)), 0); */
+/* OBSOLETE if (inferior_saved_pc > 0) break; */
+/* OBSOLETE #if defined(PYRAMID_CONTROL_FRAME_DEBUGGING) */
+/* OBSOLETE printf_unfiltered("skipping kernel frame %08x, pc=%08x\n", datum, */
+/* OBSOLETE inferior_saved_pc); */
+/* OBSOLETE #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING *x/ */
+/* OBSOLETE skipped_frames++; */
+/* OBSOLETE datum -= CONTROL_STACK_FRAME_SIZE; */
+/* OBSOLETE } */
+/* OBSOLETE */
+/* OBSOLETE reg_buf[CSP_REGNUM] = datum; */
+/* OBSOLETE supply_register(CSP_REGNUM, reg_buf+CSP_REGNUM); */
+/* OBSOLETE #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING */
+/* OBSOLETE if (skipped_frames) { */
+/* OBSOLETE fprintf_unfiltered (gdb_stderr, */
+/* OBSOLETE "skipped %d frames from %x to %x; cfp was %x, now %x\n", */
+/* OBSOLETE skipped_frames, reg_buf[CSP_REGNUM]); */
+/* OBSOLETE } */
+/* OBSOLETE #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING *x/ */
+/* 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 if (regno >= 0) */
+/* OBSOLETE { */
+/* OBSOLETE if ((0 <= regno) && (regno < 64)) { */
+/* OBSOLETE /*regaddr = register_addr (regno, offset);*x/ */
+/* OBSOLETE regaddr = regno; */
+/* OBSOLETE errno = 0; */
+/* OBSOLETE ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, */
+/* OBSOLETE read_register (regno)); */
+/* OBSOLETE if (errno != 0) */
+/* OBSOLETE { */
+/* OBSOLETE sprintf (buf, "writing register number %d", regno); */
+/* OBSOLETE perror_with_name (buf); */
+/* OBSOLETE } */
+/* OBSOLETE } */
+/* OBSOLETE } */
+/* OBSOLETE else */
+/* OBSOLETE { */
+/* OBSOLETE for (regno = 0; regno < NUM_REGS; regno++) */
+/* OBSOLETE { */
+/* OBSOLETE /*regaddr = register_addr (regno, offset);*x/ */
+/* OBSOLETE regaddr = regno; */
+/* OBSOLETE errno = 0; */
+/* OBSOLETE ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, */
+/* OBSOLETE read_register (regno)); */
+/* OBSOLETE if (errno != 0) */
+/* OBSOLETE { */
+/* OBSOLETE sprintf (buf, "writing all regs, number %d", regno); */
+/* OBSOLETE perror_with_name (buf); */
+/* OBSOLETE } */
+/* OBSOLETE } */
+/* OBSOLETE } */
+/* OBSOLETE \f */
+/* OBSOLETE /*** Extensions to core and dump files, for GDB. *x/ */
+/* OBSOLETE */
+/* OBSOLETE extern unsigned int last_frame_offset; */
+/* OBSOLETE */
+/* OBSOLETE #ifdef PYRAMID_CORE */
+/* OBSOLETE */
+/* OBSOLETE /* Can't make definitions here static, since corefile.c needs them */
+/* OBSOLETE to do bounds checking on the core-file areas. O well. *x/ */
+/* OBSOLETE */
+/* OBSOLETE /* have two stacks: one for data, one for register windows. *x/ */
+/* OBSOLETE extern CORE_ADDR reg_stack_start; */
+/* OBSOLETE extern CORE_ADDR reg_stack_end; */
+/* OBSOLETE */
+/* OBSOLETE /* need this so we can find the global registers: they never get saved. *x/ */
+/* OBSOLETE CORE_ADDR global_reg_offset; */
+/* OBSOLETE static CORE_ADDR last_frame_address; */
+/* OBSOLETE CORE_ADDR last_frame_offset; */
+/* OBSOLETE */
+/* OBSOLETE */
+/* OBSOLETE /* Address in core file of start of register window stack area. */
+/* OBSOLETE Don't know if is this any of meaningful, useful or necessary. *x/ */
+/* OBSOLETE extern int reg_stack_offset; */
+/* OBSOLETE */
+/* OBSOLETE #endif /* PYRAMID_CORE *x/ */
+/* OBSOLETE */
+/* OBSOLETE \f */
+/* 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 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 #ifdef PYRAMID_CORE */
+/* OBSOLETE reg_stack_start = CONTROL_STACK_ADDR; */
+/* OBSOLETE reg_stack_end = CONTROL_STACK_ADDR; /* this isn't strictly true...*x/ */
+/* OBSOLETE #endif /* PYRAMID_CORE *x/ */
+/* 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; */
+/* 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 data_start = exec_data_start; */
+/* OBSOLETE */
+/* OBSOLETE data_end = data_start + NBPG * u.u_dsize; */
+/* OBSOLETE data_offset = NBPG * UPAGES; */
+/* OBSOLETE stack_offset = NBPG * (UPAGES + u.u_dsize); */
+/* OBSOLETE */
+/* OBSOLETE /* find registers in core file *x/ */
+/* OBSOLETE #ifdef PYRAMID_PTRACE */
+/* OBSOLETE stack_start = stack_end - NBPG * u.u_ussize; */
+/* OBSOLETE reg_stack_offset = stack_offset + (NBPG *u.u_ussize); */
+/* OBSOLETE reg_stack_end = reg_stack_start + NBPG * u.u_cssize; */
+/* OBSOLETE */
+/* OBSOLETE last_frame_address = ((int) u.u_pcb.pcb_csp); */
+/* OBSOLETE last_frame_offset = reg_stack_offset + last_frame_address */
+/* OBSOLETE - CONTROL_STACK_ADDR ; */
+/* OBSOLETE global_reg_offset = (char *)&u - (char *)&u.u_pcb.pcb_gr0 ; */
+/* OBSOLETE */
+/* OBSOLETE /* skip any control-stack frames that were executed in the */
+/* OBSOLETE kernel. *x/ */
+/* OBSOLETE */
+/* OBSOLETE while (1) { */
+/* OBSOLETE char buf[4]; */
+/* OBSOLETE val = lseek (corechan, last_frame_offset+(47*4), 0); */
+/* OBSOLETE if (val < 0) */
+/* OBSOLETE perror_with_name (filename); */
+/* OBSOLETE val = myread (corechan, buf, sizeof buf); */
+/* OBSOLETE if (val < 0) */
+/* OBSOLETE perror_with_name (filename); */
+/* OBSOLETE */
+/* OBSOLETE if (*(int *)buf >= 0) */
+/* OBSOLETE break; */
+/* OBSOLETE printf_unfiltered ("skipping frame %s\n", local_hex_string (last_frame_address)); */
+/* OBSOLETE last_frame_offset -= CONTROL_STACK_FRAME_SIZE; */
+/* OBSOLETE last_frame_address -= CONTROL_STACK_FRAME_SIZE; */
+/* OBSOLETE } */
+/* OBSOLETE reg_offset = last_frame_offset; */
+/* OBSOLETE */
+/* OBSOLETE #if 1 || defined(PYRAMID_CONTROL_FRAME_DEBUGGING) */
+/* OBSOLETE printf_unfiltered ("Control stack pointer = %s\n", */
+/* OBSOLETE local_hex_string (u.u_pcb.pcb_csp)); */
+/* OBSOLETE printf_unfiltered ("offset to control stack %d outermost frame %d (%s)\n", */
+/* OBSOLETE reg_stack_offset, reg_offset, local_hex_string (last_frame_address)); */
+/* OBSOLETE #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING *x/ */
+/* OBSOLETE */
+/* OBSOLETE #else /* not PYRAMID_CORE *x/ */
+/* OBSOLETE stack_start = stack_end - NBPG * u.u_ssize; */
+/* OBSOLETE reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR; */
+/* OBSOLETE #endif /* not PYRAMID_CORE *x/ */
+/* OBSOLETE */
+/* OBSOLETE #ifdef __not_on_pyr_yet */
+/* 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 #endif */
+/* 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 < 64; regno++) */
+/* OBSOLETE { */
+/* OBSOLETE char buf[MAX_REGISTER_RAW_SIZE]; */
+/* OBSOLETE */
+/* OBSOLETE val = lseek (corechan, register_addr (regno, reg_offset), 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 (val < 0) */
+/* OBSOLETE perror_with_name (filename); */
+/* OBSOLETE #ifdef PYRAMID_CONTROL_FRAME_DEBUGGING */
+/* OBSOLETE printf_unfiltered ("[reg %s(%d), offset in file %s=0x%0x, addr =0x%0x, =%0x]\n", */
+/* OBSOLETE REGISTER_NAME (regno), regno, filename, */
+/* OBSOLETE register_addr(regno, reg_offset), */
+/* OBSOLETE regno * 4 + last_frame_address, */
+/* OBSOLETE *((int *)buf)); */
+/* OBSOLETE #endif /* PYRAMID_CONTROL_FRAME_DEBUGGING *x/ */
+/* 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 #if 1 || defined(PYRAMID_CONTROL_FRAME_DEBUGGING) */
+/* OBSOLETE printf_unfiltered ("Providing CSP (%s) as nominal address of current frame.\n", */
+/* OBSOLETE local_hex_string(last_frame_address)); */
+/* OBSOLETE #endif PYRAMID_CONTROL_FRAME_DEBUGGING */
+/* OBSOLETE /* FIXME: Which of the following is correct? *x/ */
+/* OBSOLETE #if 0 */
+/* OBSOLETE set_current_frame ( create_new_frame (read_register (FP_REGNUM), */
+/* OBSOLETE read_pc ())); */
+/* OBSOLETE #else */
+/* OBSOLETE set_current_frame ( create_new_frame (last_frame_address, */
+/* OBSOLETE read_pc ())); */
+/* OBSOLETE #endif */
+/* OBSOLETE */
+/* OBSOLETE select_frame (get_current_frame (), 0); */
+/* OBSOLETE validate_files (); */
+/* OBSOLETE } */
+/* OBSOLETE else if (from_tty) */
+/* OBSOLETE printf_unfiltered ("No core file now.\n"); */
+/* OBSOLETE } */
projects / deliverable / binutils-gdb.git / blobdiff