sun386 host/target/native separation
This commit is contained in:
K. Richard Pixley
parent
a113beac21
commit
61bbb1c2cf
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@ -154,6 +154,7 @@ nm-news.h
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nm-rs6000.h
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nm-sun2.h
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nm-sun3.h
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nm-sun386.h
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nm-sun4os4.h
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nm-trash.h
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nm-ultra3.h
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@ -205,7 +206,7 @@ stack.c
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standalone.c
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stuff.c
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sun3-nat.c
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sun386-xdep.c
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sun386-nat.c
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symfile.c
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symfile.h
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symm-tdep.c
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@ -1,5 +1,18 @@
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Fri Oct 16 13:06:08 1992 K. Richard Pixley (rich@sendai.cygnus.com)
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Native support for sun386 (untested).
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* config/sun386.mh (XDEPFILES): removed infptrace.o inftarg.o
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fork-child.o sun386-xdep.o.
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(NAT_FILE, NATDEPFILES): new macros.
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* config/sun386.mt (TDEPFILES): removed exec.o.
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* Makefile.in (HFILES): added nm-sun386.h.
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* sun386-nat.c, nm-sun386.h: new file.
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* sun386-xdep.c: removed.
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* xm-sun386.h: updated comment and copyright.
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(ATTACH_DETACH, FETCH_INFERIOR_REGISTERS): removed to
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nm-sun386.h.
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Native support for i386mach (untested).
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* config/i386mach.mh (XDEPFILES): removed infptrace.o inftarg.o
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@ -255,7 +255,7 @@ HFILES= breakpoint.h buildsym.h call-cmds.h command.h defs.h \
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xm-m68k.h xm-sparc.h xm-sysv4.h xm-vax.h \
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nm-irix3.h nm-irix4.h nm-mips.h nm-rs6000.h nm-sun2.h nm-sun3.h \
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nm-sun4os4.h nm-trash.h nm-news.h nm-ultra3.h nm-m88k.h \
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nm-i386mach.h
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nm-i386mach.h nm-sun386.h
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REMOTE_EXAMPLES = m68k-stub.c i386-stub.c sparc-stub.c rem-multi.shar
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@ -1,3 +1,5 @@
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# Host: Sun 386i
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XDEPFILES= infptrace.o inftarg.o fork-child.o sun386-xdep.o
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XDEPFILES=
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XM_FILE= xm-sun386.h
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NAT_FILE= nm-sun386.h
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NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o sun386-nat.o
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@ -1,3 +1,3 @@
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# Target: Sun 386i target configuration file.
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TDEPFILES= exec.o i386-pinsn.o solib.o
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TDEPFILES= i386-pinsn.o solib.o
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TM_FILE= tm-sun386.h
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@ -0,0 +1,26 @@
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/* Native support for Sun 386i, for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1989, 1992 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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/* Do implement the attach and detach commands. */
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#define ATTACH_DETACH
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/* Override copies of {fetch,store}_inferior_registers in infptrace.c. */
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#define FETCH_INFERIOR_REGISTERS
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@ -0,0 +1,276 @@
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/* Native support for Sun 386i's for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
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Changes for sun386i by Jean Daniel Fekete (jdf@litp.univ-p6-7.fr),
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C2V Paris, April 89.
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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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#if defined (GDB_TARGET_IS_SUN386)
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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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#include "gdbcore.h"
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <sys/user.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <sys/ptrace.h>
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#include <machine/reg.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/core.h>
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/* Machine-dependent code which would otherwise be in core.c */
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/* Work with core files, for GDB. */
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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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/* 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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{
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struct core corestr;
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val = myread (corechan, &corestr, sizeof corestr);
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if (val < 0)
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perror_with_name (filename);
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if (corestr.c_magic != CORE_MAGIC)
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error ("\"%s\" does not appear to be a core dump file (magic 0x%x, expected 0x%x)",
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filename, corestr.c_magic, (int) CORE_MAGIC);
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else if (sizeof (struct core) != corestr.c_len)
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error ("\"%s\" has an invalid struct core length (%d, expected %d)",
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filename, corestr.c_len, (int) sizeof (struct core));
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data_start = exec_data_start;
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data_end = data_start + corestr.c_dsize;
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stack_start = stack_end - corestr.c_ssize;
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data_offset = sizeof corestr;
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stack_offset = sizeof corestr + corestr.c_dsize;
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bcopy (&corestr.c_regs, registers, sizeof corestr.c_regs);
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bcopy (corestr.c_fpu.f_fpstatus.f_st,
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®isters[REGISTER_BYTE (FP0_REGNUM)],
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sizeof corestr.c_fpu.f_fpstatus.f_st);
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bcopy (&corestr.c_fpu.f_fpstatus.f_ctrl,
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®isters[REGISTER_BYTE (FPC_REGNUM)],
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sizeof corestr.c_fpu.f_fpstatus -
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sizeof corestr.c_fpu.f_fpstatus.f_st);
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/* the struct aouthdr of sun coff is not the struct exec stored
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in the core file. */
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bcopy (&corestr.c_aouthdr, &core_aouthdr, sizeof (struct exec));
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#ifndef COFF_ENCAPSULATE
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core_aouthdr.magic = corestr.c_aouthdr.a_info;
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core_aouthdr.vstamp = /*SUNVERSION*/ 31252;
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#endif
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printf ("Core file is from \"%s\".\n", corestr.c_cmdname);
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if (corestr.c_signo > 0)
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printf ("Program terminated with signal %d, %s.\n",
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corestr.c_signo, safe_strsignal (corestr.c_signo));
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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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set_current_frame ( create_new_frame (read_register (FP_REGNUM),
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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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i387_to_double (from, to)
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char *from;
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char *to;
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{
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long *lp;
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/* push extended mode on 387 stack, then pop in double mode
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*
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* first, set exception masks so no error is generated -
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* number will be rounded to inf or 0, if necessary
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*/
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asm ("pushl %eax"); /* grab a stack slot */
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asm ("fstcw (%esp)"); /* get 387 control word */
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asm ("movl (%esp),%eax"); /* save old value */
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asm ("orl $0x3f,%eax"); /* mask all exceptions */
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asm ("pushl %eax");
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asm ("fldcw (%esp)"); /* load new value into 387 */
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asm ("movl 8(%ebp),%eax");
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asm ("fldt (%eax)"); /* push extended number on 387 stack */
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asm ("fwait");
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asm ("movl 12(%ebp),%eax");
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asm ("fstpl (%eax)"); /* pop double */
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asm ("fwait");
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asm ("popl %eax"); /* flush modified control word */
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asm ("fnclex"); /* clear exceptions */
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asm ("fldcw (%esp)"); /* restore original control word */
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asm ("popl %eax"); /* flush saved copy */
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}
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double_to_i387 (from, to)
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char *from;
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char *to;
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{
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/* push double mode on 387 stack, then pop in extended mode
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* no errors are possible because every 64-bit pattern
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* can be converted to an extended
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*/
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asm ("movl 8(%ebp),%eax");
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asm ("fldl (%eax)");
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asm ("fwait");
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asm ("movl 12(%ebp),%eax");
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asm ("fstpt (%eax)");
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asm ("fwait");
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}
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#else /* Not sun386 target. */
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/* These functions shouldn't be called when we're cross-debugging. */
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/* ARGSUSED */
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void
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fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
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char *core_reg_sect;
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unsigned core_reg_size;
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int which;
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unsigned int reg_addr; /* Unused in this version */
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{
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}
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#endif /* Not sun386 target. */
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void
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fetch_inferior_registers (regno)
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int regno;
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{
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struct regs inferior_registers;
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struct fp_state inferior_fp_registers;
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extern char registers[];
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registers_fetched ();
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ptrace (PTRACE_GETREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_registers);
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ptrace (PTRACE_GETFPREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_fp_registers);
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bcopy (&inferior_registers, registers, sizeof inferior_registers);
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bcopy (inferior_fp_registers.f_st,®isters[REGISTER_BYTE (FP0_REGNUM)],
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sizeof inferior_fp_registers.f_st);
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bcopy (&inferior_fp_registers.f_ctrl,
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®isters[REGISTER_BYTE (FPC_REGNUM)],
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sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st);
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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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struct regs inferior_registers;
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struct fp_state inferior_fp_registers;
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extern char registers[];
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bcopy (registers, &inferior_registers, 20 * 4);
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bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)],inferior_fp_registers.f_st,
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sizeof inferior_fp_registers.f_st);
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bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)],
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&inferior_fp_registers.f_ctrl,
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sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st);
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#ifdef PTRACE_FP_BUG
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if (regno == FP_REGNUM || regno == -1)
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/* Storing the frame pointer requires a gross hack, in which an
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instruction that moves eax into ebp gets single-stepped. */
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{
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int stack = inferior_registers.r_reg[SP_REGNUM];
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int stuff = ptrace (PTRACE_PEEKDATA, inferior_pid,
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(PTRACE_ARG3_TYPE) stack);
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int reg = inferior_registers.r_reg[EAX];
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inferior_registers.r_reg[EAX] =
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inferior_registers.r_reg[FP_REGNUM];
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ptrace (PTRACE_SETREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_registers);
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ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack,
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0xc589);
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ptrace (PTRACE_SINGLESTEP, inferior_pid, (PTRACE_ARG3_TYPE) stack,
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0);
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wait (0);
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ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack,
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stuff);
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inferior_registers.r_reg[EAX] = reg;
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}
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#endif
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ptrace (PTRACE_SETREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_registers);
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ptrace (PTRACE_SETFPREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_fp_registers);
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}
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@ -1,5 +1,5 @@
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/* Parameters for execution on a Sun 386i, for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
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/* Host support for Sun 386i, for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1989, 1992 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -31,11 +31,4 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define NEW_SUN_CORE
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/* Do implement the attach and detach commands. */
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#define ATTACH_DETACH
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/* Override copies of {fetch,store}_inferior_registers in infptrace.c. */
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#define FETCH_INFERIOR_REGISTERS
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#define PREPARE_TO_STORE() read_register_bytes (0, NULL, REGISTER_BYTES)
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