d747e0af3d
* All GDB files that #include defs.h: Removed stdio.h. (defs.h): #include stdio.h. This has been tested by building GDBs for all targets hosted on Sun4. None of the build problems were related to stdio.h inclusion. (n.b. many configurations don't build for other reasons.)
331 lines
8.7 KiB
C
331 lines
8.7 KiB
C
/* Host-dependent Motorola 88xxx support for GDB, the GNU Debugger.
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Copyright 1988, 1990, 1991 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#ifdef USG
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#include <sys/types.h>
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#endif
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include "gdbcore.h"
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#include <sys/user.h>
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#ifndef USER /* added to support BCS ptrace_user */
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#define USER ptrace_user
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#endif
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include "symtab.h"
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#include "setjmp.h"
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#include "value.h"
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#ifdef DELTA88
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#include <sys/ptrace.h>
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/* define offsets to the pc instruction offsets in ptrace_user struct */
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#define SXIP_OFFSET (char *)&u.pt_sigframe.sig_sxip - (char *)&u
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#define SNIP_OFFSET (char *)&u.pt_sigframe.sig_snip - (char *)&u
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#define SFIP_OFFSET (char *)&u.pt_sigframe.sig_sfip - (char *)&u
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#else
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/* define offsets to the pc instruction offsets in ptrace_user struct */
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#define SXIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sxip - (char *)&u
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#define SNIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_snip - (char *)&u
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#define SFIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u
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#endif
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extern int have_symbol_file_p();
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extern jmp_buf stack_jmp;
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extern int errno;
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extern char registers[REGISTER_BYTES];
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void
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fetch_inferior_registers (regno)
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int regno; /* Original value discarded */
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{
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register unsigned int regaddr;
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char buf[MAX_REGISTER_RAW_SIZE];
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register int i;
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struct USER u;
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unsigned int offset;
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offset = (char *) &u.pt_r0 - (char *) &u;
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regaddr = offset; /* byte offset to r0;*/
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/* offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; */
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for (regno = 0; regno < NUM_REGS; regno++)
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{
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/*regaddr = register_addr (regno, offset);*/
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/* 88k enhancement */
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for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
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{
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*(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0);
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regaddr += sizeof (int);
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}
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supply_register (regno, buf);
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}
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/* now load up registers 36 - 38; special pc registers */
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*(int *) &buf[0] = ptrace (3,inferior_pid,SXIP_OFFSET ,0);
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supply_register (SXIP_REGNUM, buf);
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*(int *) &buf[0] = ptrace (3, inferior_pid,SNIP_OFFSET,0);
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supply_register (SNIP_REGNUM, buf);
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*(int *) &buf[0] = ptrace (3, inferior_pid,SFIP_OFFSET,0);
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supply_register (SFIP_REGNUM, buf);
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}
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/* Store our register values back into the inferior.
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If REGNO is -1, do this for all registers.
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Otherwise, REGNO specifies which register (so we can save time). */
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void
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store_inferior_registers (regno)
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int regno;
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{
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register unsigned int regaddr;
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char buf[80];
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struct USER u;
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unsigned int offset = (char *) &u.pt_r0 - (char *) &u;
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regaddr = offset;
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if (regno >= 0)
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{
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/* regaddr = register_addr (regno, offset); */
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if (regno < PC_REGNUM)
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{
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regaddr = offset + regno * sizeof (int);
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errno = 0;
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ptrace (6, inferior_pid, regaddr, read_register (regno));
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if (errno != 0)
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{
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sprintf (buf, "writing register number %d", regno);
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perror_with_name (buf);
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}
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}
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else if (regno == SXIP_REGNUM)
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ptrace (6, inferior_pid, SXIP_OFFSET, read_register(regno));
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else if (regno == SNIP_REGNUM)
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ptrace (6, inferior_pid, SNIP_OFFSET, read_register(regno));
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else if (regno == SFIP_REGNUM)
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ptrace (6, inferior_pid, SFIP_OFFSET, read_register(regno));
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else printf ("Bad register number for store_inferior routine\n");
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}
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else {
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for (regno = 0; regno < NUM_REGS - 3; regno++)
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{
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/* regaddr = register_addr (regno, offset); */
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errno = 0;
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regaddr = offset + regno * sizeof (int);
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ptrace (6, inferior_pid, regaddr, read_register (regno));
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if (errno != 0)
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{
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sprintf (buf, "writing register number %d", regno);
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perror_with_name (buf);
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}
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}
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ptrace (6,inferior_pid,SXIP_OFFSET,read_register(SXIP_REGNUM));
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ptrace (6,inferior_pid,SNIP_OFFSET,read_register(SNIP_REGNUM));
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ptrace (6,inferior_pid,SFIP_OFFSET,read_register(SFIP_REGNUM));
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}
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}
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#if 0
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/* Core files are now a function of BFD. */
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void
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core_file_command (filename, from_tty)
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char *filename;
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int from_tty;
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{
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int val;
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extern char registers[];
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/* Need symbol file and one with tdesc info for corefiles to work */
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if (!have_symbol_file_p())
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error ("Requires symbol-file and exec-file");
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if (!execfile)
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error ("Requires exec-file and symbol-file");
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/* Discard all vestiges of any previous core file
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and mark data and stack spaces as empty. */
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if (corefile)
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free (corefile);
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corefile = 0;
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if (corechan >= 0)
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close (corechan);
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corechan = -1;
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data_start = 0;
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data_end = 0;
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stack_start = STACK_END_ADDR;
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stack_end = STACK_END_ADDR;
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/* Now, if a new core file was specified, open it and digest it. */
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if (filename)
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{
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filename = tilde_expand (filename);
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make_cleanup (free, filename);
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if (have_inferior_p ())
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error ("To look at a core file, you must kill the inferior with \"kill\".");
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corechan = open (filename, O_RDONLY, 0);
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if (corechan < 0)
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perror_with_name (filename);
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/* 4.2-style (and perhaps also sysV-style) core dump file. */
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{
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struct USER u;
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int reg_offset;
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val = myread (corechan, &u, sizeof u);
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if (val < 0)
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perror_with_name (filename);
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data_start = u.pt_o_data_start;
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data_end = data_start + u.pt_dsize;
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stack_start = stack_end - u.pt_ssize;
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data_offset = u.pt_dataptr;
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stack_offset = data_offset + u.pt_dsize;
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#if defined(BCS)
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#if defined(DGUX)
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reg_offset = 2048;
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#endif /* defined (DGUX) */
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#else
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/* original code: */
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reg_offset = (int) u.pt_r0 - KERNEL_U_ADDR;
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#endif /* defined(BCS) */
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/* I don't know where to find this info.
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So, for now, mark it as not available. */
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/* N_SET_MAGIC (core_aouthdr, 0); */
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bzero ((char *) &core_aouthdr, sizeof core_aouthdr);
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/* Read the register values out of the core file and store
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them where `read_register' will find them. */
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{
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register int regno;
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for (regno = 0; regno < NUM_REGS; regno++)
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{
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char buf[MAX_REGISTER_RAW_SIZE];
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val = lseek (corechan, register_addr (regno, reg_offset), 0);
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if (val < 0)
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perror_with_name (filename);
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val = myread (corechan, buf, sizeof buf);
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if (val < 0)
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perror_with_name (filename);
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supply_register (regno, buf);
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}
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}
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}
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if (filename[0] == '/')
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corefile = savestring (filename, strlen (filename));
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else
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{
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corefile = concat (current_directory, "/", filename, NULL);
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}
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init_tdesc();
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current_context = init_dcontext();
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set_current_frame ( create_new_frame(get_frame_base (read_pc()),
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read_pc ()));
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select_frame (get_current_frame (), 0);
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validate_files ();
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}
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else if (from_tty)
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printf ("No core file now.\n");
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}
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#endif
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/* blockend is the address of the end of the user structure */
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m88k_register_u_addr (blockend, regnum)
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{
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struct USER u;
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int ustart = blockend - sizeof (struct USER);
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switch (regnum)
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{
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case 0:
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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case 8:
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case 9:
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case 10:
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case 11:
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case 12:
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case 13:
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case 14:
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case 15:
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case 16:
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case 17:
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case 18:
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case 19:
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case 20:
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case 21:
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case 22:
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case 23:
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case 24:
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case 25:
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case 26:
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case 27:
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case 28:
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case 29:
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case 30:
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case 31: return (ustart + ((int) &u.pt_r0 - (int) &u) + sizeof(REGISTER_TYPE) * regnum);
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case PSR_REGNUM: return (ustart + ((int) &u.pt_psr - (int) &u));
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case FPSR_REGNUM: return (ustart + ((int) &u.pt_fpsr - (int) &u));
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case FPCR_REGNUM: return (ustart + ((int) &u.pt_fpcr - (int) &u));
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case SXIP_REGNUM: return (ustart + SXIP_OFFSET);
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case SNIP_REGNUM: return (ustart + SNIP_OFFSET);
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case SFIP_REGNUM: return (ustart + SFIP_OFFSET);
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default: return (blockend + sizeof (REGISTER_TYPE) * regnum);
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}
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}
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