jkp@SAUNA.HUT.FI (Jyrki Kuoppala) (04/03/89)
Here are the diffs, m-altos*.h and altos-dep.c files to get gdb 3.1.1
working on Altos 3068 (a 68020 Unix box running SVR2). There is
support for versions with or without the coff encapsulation stuff but
as I haven't tested the COFF symbol reading stuff the use of gcc and
GNU binutils is recommended.
The m-altos.h, m-altosgas.h and altos-dep.c probably are a good
starting point to get gdb running on other m68k USG boxes. There are
some Altos specialties but they are inside #ifdef ALTOS so they're
easy to spot.
A couple of notes: You need gcc and the GNU binutils (at least nm and
linker) to get gdb running; you could try it with the Altos cc but
believe me, it's not good for your health ;-). Also you have to hack
up your own sys/wait.h; one from a Sun will do nicely.
The diffs for Makefile I used are included, but that's probably not
necessary.
And here are the diffs:
Jyrki Kuoppala Helsinki University of Technology, Finland.
Internet : jkp@cs.hut.fi [128.214.3.119]
BITNET : tko-jk@finhut.bitnet Gravity is a myth, the Earth sucks!
----------------------------------------------------------------------
diff -cr2N dist-gdb/Makefile gdb-3.1.1.a/Makefile
*** dist-gdb/Makefile Mon Mar 13 09:51:16 1989
--- gdb-3.1.1.a/Makefile Sat Apr 1 07:33:28 1989
***************
*** 33,37 ****
# -I. for "#include <obstack.h>". Possibly regex.h also.
#CFLAGS = -g -I. -O
! CFLAGS = -I. -g
#LDFLAGS = -pg -g
LDFLAGS = -g
--- 33,38 ----
# -I. for "#include <obstack.h>". Possibly regex.h also.
#CFLAGS = -g -I. -O
! #CFLAGS = -I. -g
! CFLAGS = -I. -O
#LDFLAGS = -pg -g
LDFLAGS = -g
***************
*** 43,48 ****
OBSTACK = obstack.o
OBSTACK1 = obstack.o
! REGEX =
! REGEX1 =
#
--- 44,51 ----
OBSTACK = obstack.o
OBSTACK1 = obstack.o
! #REGEX =
! #REGEX1 =
! REGEX = regex.o
! REGEX1 = regex.o
#
***************
*** 62,65 ****
--- 65,69 ----
# for USG
#CLIBS= $(OBSTACK) $(REGEX) $(GNU_MALLOC) -lPW
+ CLIBS= $(OBSTACK) $(REGEX) $(GNU_MALLOC) -lizard
SFILES = blockframe.c breakpoint.c coffread.c command.c core.c dbxread.c \
diff -cr2N dist-gdb/a.out.encap.h gdb-3.1.1.a/a.out.encap.h
*** dist-gdb/a.out.encap.h Mon Jan 23 23:20:29 1989
--- gdb-3.1.1.a/a.out.encap.h Thu Mar 30 17:18:34 1989
***************
*** 66,71 ****
#define COFF_MAGIC 0514 /* I386MAGIC */
#endif
! #if defined(i386)
short __header_offset_temp;
#define HEADER_OFFSET(f) \
--- 66,74 ----
#define COFF_MAGIC 0514 /* I386MAGIC */
#endif
+ #ifdef m68k
+ #define COFF_MAGIC 0520 /* MC68MAGIC */
+ #endif
! #if defined(i386) || defined(m68k)
short __header_offset_temp;
#define HEADER_OFFSET(f) \
***************
*** 85,89 ****
#define HEADER_OFFSET(f) 0
#define HEADER_OFFSET_FD(fd) 0
! #endif
#define HEADER_SEEK(f) (fseek ((f), HEADER_OFFSET((f)), 1))
--- 88,92 ----
#define HEADER_OFFSET(f) 0
#define HEADER_OFFSET_FD(fd) 0
! #endif /* i386 || m68k */
#define HEADER_SEEK(f) (fseek ((f), HEADER_OFFSET((f)), 1))
***************
*** 105,109 ****
((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
sizeof (struct coffheader) + sizeof (struct exec) : 0)
!
#define SEGMENT_SIZE 0x400000
#define N_DATADDR(x) \
--- 108,119 ----
((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
sizeof (struct coffheader) + sizeof (struct exec) : 0)
! #ifdef ALTOS
! #define SEGMENT_SIZE 0x40000
! #define N_DATADDR(x) \
! ((N_FLAGS(x) & N_FLAGS_COFF_ENCAPSULATE) ? \
! (((N_TXTADDR(x)+(x).a_text+0x2000) / SEGMENT_SIZE + 1) * SEGMENT_SIZE + \
! (N_TXTADDR(x)+(x).a_text+0x2000) % 0x2000) : \
! (N_TXTADDR(x)+(x).a_text))
! #else
#define SEGMENT_SIZE 0x400000
#define N_DATADDR(x) \
***************
*** 111,112 ****
--- 121,123 ----
(SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))) : \
(N_TXTADDR(x)+(x).a_text))
+ #endif /* ALTOS */
diff -cr2N dist-gdb/a.out.gnu.h gdb-3.1.1.a/a.out.gnu.h
*** dist-gdb/a.out.gnu.h Mon Jan 9 18:48:18 1989
--- gdb-3.1.1.a/a.out.gnu.h Thu Mar 30 16:53:16 1989
***************
*** 28,31 ****
--- 28,33 ----
/* skip a bunch so we don't run into any of sun's numbers */
M_386 = 100,
+ /* Generic 68020 (altos 3068) */
+ M_68K = 101,
};
diff -cr2N dist-gdb/altos-dep.c gdb-3.1.1.a/altos-dep.c
*** dist-gdb/altos-dep.c Thu Jan 1 03:00:00 1970
--- gdb-3.1.1.a/altos-dep.c Sun Apr 2 22:56:21 1989
***************
*** 0 ****
--- 1,604 ----
+ /* Low level interface to ptrace, for GDB when running under m68k SVR2 Unix
+ on Altos 3068.
+ Copyright (C) 1988 Free Software Foundation, Inc.
+
+ GDB is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY. No author or distributor accepts responsibility to anyone
+ for the consequences of using it or for whether it serves any
+ particular purpose or works at all, unless he says so in writing.
+ Refer to the GDB General Public License for full details.
+
+ Everyone is granted permission to copy, modify and redistribute GDB,
+ but only under the conditions described in the GDB General Public
+ License. A copy of this license is supposed to have been given to you
+ along with GDB so you can know your rights and responsibilities. It
+ should be in a file named COPYING. Among other things, the copyright
+ notice and this notice must be preserved on all copies.
+
+ In other words, go ahead and share GDB, but don't try to stop
+ anyone else from sharing it farther. Help stamp out software hoarding!
+ */
+
+ #include "defs.h"
+ #include "param.h"
+ #include "frame.h"
+ #include "inferior.h"
+
+ #ifdef USG
+ #include <sys/types.h>
+ #include <ctype.h>
+ #endif
+
+ #include <stdio.h>
+ #include <sys/param.h>
+ #include <sys/dir.h>
+ #include <signal.h>
+ #ifdef USG
+ #include <sys/page.h>
+ #ifdef ALTOS
+ #include <sys/net.h>
+ #endif
+ #endif
+ #include <sys/user.h>
+ #include <sys/ioctl.h>
+ #include <fcntl.h>
+
+ #ifdef COFF_ENCAPSULATE
+ #include "a.out.encap.h"
+ #else
+ #include <a.out.h>
+ #endif
+ #ifndef N_SET_MAGIC
+ #ifdef COFF_FORMAT
+ #define N_SET_MAGIC(exec, val) ((exec).magic = (val))
+ #else
+ #define N_SET_MAGIC(exec, val) ((exec).a_magic = (val))
+ #endif
+ #endif
+
+ #include <sys/file.h>
+ #include <sys/stat.h>
+
+ extern int errno;
+
+ /* This function simply calls ptrace with the given arguments.
+ It exists so that all calls to ptrace are isolated in this
+ machine-dependent file. */
+ int
+ call_ptrace (request, pid, arg3, arg4)
+ int request, pid, arg3, arg4;
+ {
+ return ptrace (request, pid, arg3, arg4);
+ }
+
+ kill_inferior ()
+ {
+ if (remote_debugging)
+ return;
+ if (inferior_pid == 0)
+ return;
+ ptrace (8, inferior_pid, 0, 0);
+ wait (0);
+ inferior_died ();
+ }
+
+ /* This is used when GDB is exiting. It gives less chance of error.*/
+
+ kill_inferior_fast ()
+ {
+ if (remote_debugging)
+ return;
+ if (inferior_pid == 0)
+ return;
+ ptrace (8, inferior_pid, 0, 0);
+ wait (0);
+ }
+
+ /* Resume execution of the inferior process.
+ If STEP is nonzero, single-step it.
+ If SIGNAL is nonzero, give it that signal. */
+
+ void
+ resume (step, signal)
+ int step;
+ int signal;
+ {
+ errno = 0;
+ if (remote_debugging)
+ remote_resume (step, signal);
+ else
+ {
+ ptrace (step ? 9 : 7, inferior_pid, 1, signal);
+ if (errno)
+ perror_with_name ("ptrace");
+ }
+ }
+
+ void
+ fetch_inferior_registers ()
+ {
+ register int regno;
+ register unsigned int regaddr;
+ char buf[MAX_REGISTER_RAW_SIZE];
+ register int i;
+
+ struct user u;
+ #ifdef ALTOS
+ unsigned int offset = (char *) &u.u_state - (char *) &u;
+ offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR;
+ #else
+ unsigned int offset = (char *) &u.u_ar0 - (char *) &u;
+ offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR;
+ #endif
+
+ for (regno = 0; regno < NUM_REGS; regno++)
+ {
+ regaddr = register_addr (regno, offset);
+ for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
+ {
+ *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0);
+ regaddr += sizeof (int);
+ }
+ 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). */
+
+ store_inferior_registers (regno)
+ int regno;
+ {
+ register unsigned int regaddr;
+ char buf[80];
+
+ struct user u;
+ #ifdef ALTOS
+ unsigned int offset = (char *) &u.u_state - (char *) &u;
+ offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR;
+ #else
+ unsigned int offset = (char *) &u.u_ar0 - (char *) &u;
+ offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR;
+ #endif
+
+ if (regno >= 0)
+ {
+ regaddr = register_addr (regno, offset);
+ errno = 0;
+ ptrace (6, inferior_pid, 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);
+ errno = 0;
+ ptrace (6, inferior_pid, regaddr, read_register (regno));
+ if (errno != 0)
+ {
+ sprintf (buf, "writing register number %d", regno);
+ perror_with_name (buf);
+ }
+ }
+ }
+
+ /* Copy LEN bytes from inferior's memory starting at MEMADDR
+ to debugger memory starting at MYADDR.
+ On failure (cannot read from inferior, usually because address is out
+ of bounds) returns the value of errno. */
+
+ int
+ read_inferior_memory (memaddr, myaddr, len)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+ {
+ register int i;
+ /* Round starting address down to longword boundary. */
+ register CORE_ADDR addr = memaddr & - sizeof (int);
+ /* Round ending address up; get number of longwords that makes. */
+ register int count
+ = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
+ /* Allocate buffer of that many longwords. */
+ register int *buffer = (int *) alloca (count * sizeof (int));
+ extern int errno;
+
+ /* Read all the longwords */
+ for (i = 0; i < count; i++, addr += sizeof (int))
+ {
+ errno = 0;
+ if (remote_debugging)
+ buffer[i] = remote_fetch_word (addr);
+ else
+ buffer[i] = ptrace (1, inferior_pid, addr, 0);
+ if (errno)
+ return errno;
+ }
+
+ /* Copy appropriate bytes out of the buffer. */
+ bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
+ return 0;
+ }
+
+ /* Copy LEN bytes of data from debugger memory at MYADDR
+ to inferior's memory at MEMADDR.
+ On failure (cannot write the inferior)
+ returns the value of errno. */
+
+ int
+ write_inferior_memory (memaddr, myaddr, len)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+ {
+ register int i;
+ /* Round starting address down to longword boundary. */
+ register CORE_ADDR addr = memaddr & - sizeof (int);
+ /* Round ending address up; get number of longwords that makes. */
+ register int count
+ = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
+ /* Allocate buffer of that many longwords. */
+ register int *buffer = (int *) alloca (count * sizeof (int));
+ extern int errno;
+
+ /* Fill start and end extra bytes of buffer with existing memory data. */
+
+ if (remote_debugging)
+ buffer[0] = remote_fetch_word (addr);
+ else
+ buffer[0] = ptrace (1, inferior_pid, addr, 0);
+
+ if (count > 1)
+ {
+ if (remote_debugging)
+ buffer[count - 1]
+ = remote_fetch_word (addr + (count - 1) * sizeof (int));
+ else
+ buffer[count - 1]
+ = ptrace (1, inferior_pid,
+ addr + (count - 1) * sizeof (int), 0);
+ }
+
+ /* Copy data to be written over corresponding part of buffer */
+
+ bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
+
+ /* Write the entire buffer. */
+
+ for (i = 0; i < count; i++, addr += sizeof (int))
+ {
+ errno = 0;
+ if (remote_debugging)
+ remote_store_word (addr, buffer[i]);
+ else
+ ptrace (4, inferior_pid, addr, buffer[i]);
+ if (errno)
+ return errno;
+ }
+
+ return 0;
+ }
+
+ /* Work with core dump and executable files, for GDB.
+ This code would be in core.c if it weren't machine-dependent. */
+
+ /* Recognize COFF format systems because a.out.h defines AOUTHDR. */
+ #ifdef AOUTHDR
+ #define COFF_FORMAT
+ #endif
+
+ #ifndef N_TXTADDR
+ #define N_TXTADDR(hdr) 0
+ #endif /* no N_TXTADDR */
+
+ #ifndef N_DATADDR
+ #define N_DATADDR(hdr) hdr.a_text
+ #endif /* no N_DATADDR */
+
+ /* Make COFF and non-COFF names for things a little more compatible
+ to reduce conditionals later. */
+
+ #ifdef COFF_FORMAT
+ #define a_magic magic
+ #endif
+
+ #ifndef COFF_FORMAT
+ #define AOUTHDR struct exec
+ #endif
+
+ extern char *sys_siglist[];
+
+
+ /* Hook for `exec_file_command' command to call. */
+
+ extern void (*exec_file_display_hook) ();
+
+ /* File names of core file and executable file. */
+
+ extern char *corefile;
+ extern char *execfile;
+
+ /* Descriptors on which core file and executable file are open.
+ Note that the execchan is closed when an inferior is created
+ and reopened if the inferior dies or is killed. */
+
+ extern int corechan;
+ extern int execchan;
+
+ /* Last modification time of executable file.
+ Also used in source.c to compare against mtime of a source file. */
+
+ extern int exec_mtime;
+
+ /* Virtual addresses of bounds of the two areas of memory in the core file. */
+
+ extern CORE_ADDR data_start;
+ extern CORE_ADDR data_end;
+ extern CORE_ADDR stack_start;
+ extern CORE_ADDR stack_end;
+
+ /* Virtual addresses of bounds of two areas of memory in the exec file.
+ Note that the data area in the exec file is used only when there is no core file. */
+
+ extern CORE_ADDR text_start;
+ extern CORE_ADDR text_end;
+
+ extern CORE_ADDR exec_data_start;
+ extern CORE_ADDR exec_data_end;
+
+ /* Address in executable file of start of text area data. */
+
+ extern int text_offset;
+
+ /* Address in executable file of start of data area data. */
+
+ extern int exec_data_offset;
+
+ /* Address in core file of start of data area data. */
+
+ extern int data_offset;
+
+ /* Address in core file of start of stack area data. */
+
+ extern int stack_offset;
+
+ #ifdef COFF_FORMAT
+ /* various coff data structures */
+
+ extern FILHDR file_hdr;
+ extern SCNHDR text_hdr;
+ extern SCNHDR data_hdr;
+
+ #endif /* not COFF_FORMAT */
+
+ /* a.out header saved in core file. */
+
+ extern AOUTHDR core_aouthdr;
+
+ /* a.out header of exec file. */
+
+ extern AOUTHDR exec_aouthdr;
+
+ extern void validate_files ();
+
+ core_file_command (filename, from_tty)
+ char *filename;
+ int from_tty;
+ {
+ int val;
+ extern char registers[];
+
+ /* Discard all vestiges of any previous core file
+ and mark data and stack spaces as empty. */
+
+ if (corefile)
+ free (corefile);
+ corefile = 0;
+
+ if (corechan >= 0)
+ close (corechan);
+ corechan = -1;
+
+ data_start = 0;
+ data_end = 0;
+ stack_start = STACK_END_ADDR;
+ stack_end = STACK_END_ADDR;
+
+ /* Now, if a new core file was specified, open it and digest it. */
+
+ if (filename)
+ {
+ if (have_inferior_p ())
+ error ("To look at a core file, you must kill the inferior with \"kill\".");
+ corechan = open (filename, O_RDONLY, 0);
+ if (corechan < 0)
+ perror_with_name (filename);
+ /* 4.2-style (and perhaps also sysV-style) core dump file. */
+ {
+ struct user u;
+
+ int reg_offset;
+
+ val = myread (corechan, &u, sizeof u);
+ if (val < 0)
+ perror_with_name (filename);
+ data_start = exec_data_start;
+
+ #ifdef ALTOS
+ #define NBPG NBPP
+ #define UPAGES USIZE
+ /* data_end = data_start + u.u_dsize;
+ stack_start = stack_end - u.u_ssize;
+ data_offset = sizeof u;
+ stack_offset = data_offset + u.u_dsize;
+ printf ("u.u_dsize: %x, u.u_ssize: %x\n", u.u_dsize, u.u_ssize);
+ #else*/
+ #endif
+ data_end = data_start + NBPG * u.u_dsize;
+ stack_start = stack_end - NBPG * u.u_ssize;
+ #ifdef ALTOS
+ data_offset = NBPG * UPAGES + exec_data_start % NBPG /* Not sure about this //jkp */;
+ #else
+ data_offset = NBPG * UPAGES;
+ #endif
+ stack_offset = NBPG * (UPAGES + u.u_dsize);
+ #ifdef ALTOS
+ reg_offset = (int) u.u_state - KERNEL_U_ADDR;
+ #else
+ reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR;
+ #endif
+ bcopy (&u.u_exdata, &core_aouthdr, sizeof (AOUTHDR));
+ printf ("Core file is from \"%s\".\n", u.u_comm);
+ #if 0
+ if (u.u_signal > 0)
+ printf ("Program terminated with signal %d, %s.\n",
+ u.u_signal,
+ u.u_signal < NSIG
+ ? sys_siglist[u.u_signal]
+ : "(undocumented)");
+ #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 < NUM_REGS; regno++)
+ {
+ char buf[MAX_REGISTER_RAW_SIZE];
+
+ val = lseek (corechan, register_addr (regno, reg_offset), 0);
+ if (val < 0)
+ perror_with_name (filename);
+
+ val = myread (corechan, buf, sizeof buf);
+ if (val < 0)
+ perror_with_name (filename);
+ supply_register (regno, buf);
+ }
+ }
+ }
+ if (filename[0] == '/')
+ corefile = savestring (filename, strlen (filename));
+ else
+ {
+ corefile = concat (current_directory, "/", filename);
+ }
+
+ set_current_frame ( create_new_frame (read_register (FP_REGNUM),
+ read_pc ()));
+ select_frame (get_current_frame (), 0);
+ validate_files ();
+ }
+ else if (from_tty)
+ printf ("No core file now.\n");
+ }
+
+ exec_file_command (filename, from_tty)
+ char *filename;
+ int from_tty;
+ {
+ int val;
+
+ /* Eliminate all traces of old exec file.
+ Mark text segment as empty. */
+
+ if (execfile)
+ free (execfile);
+ execfile = 0;
+ data_start = 0;
+ data_end -= exec_data_start;
+ text_start = 0;
+ text_end = 0;
+ exec_data_start = 0;
+ exec_data_end = 0;
+ if (execchan >= 0)
+ close (execchan);
+ execchan = -1;
+
+ /* Now open and digest the file the user requested, if any. */
+
+ if (filename)
+ {
+ execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0,
+ &execfile);
+ if (execchan < 0)
+ perror_with_name (filename);
+
+ #ifdef COFF_FORMAT
+ {
+ int aout_hdrsize;
+ int num_sections;
+
+ if (read_file_hdr (execchan, &file_hdr) < 0)
+ error ("\"%s\": not in executable format.", execfile);
+
+ aout_hdrsize = file_hdr.f_opthdr;
+ num_sections = file_hdr.f_nscns;
+
+ if (read_aout_hdr (execchan, &exec_aouthdr, aout_hdrsize) < 0)
+ error ("\"%s\": can't read optional aouthdr", execfile);
+
+ if (read_section_hdr (execchan, _TEXT, &text_hdr, num_sections) < 0)
+ error ("\"%s\": can't read text section header", execfile);
+
+ if (read_section_hdr (execchan, _DATA, &data_hdr, num_sections) < 0)
+ error ("\"%s\": can't read data section header", execfile);
+
+ text_start = exec_aouthdr.text_start;
+ text_end = text_start + exec_aouthdr.tsize;
+ text_offset = text_hdr.s_scnptr;
+ exec_data_start = exec_aouthdr.data_start;
+ exec_data_end = exec_data_start + exec_aouthdr.dsize;
+ exec_data_offset = data_hdr.s_scnptr;
+ data_start = exec_data_start;
+ data_end += exec_data_start;
+ exec_mtime = file_hdr.f_timdat;
+ }
+ #else /* not COFF_FORMAT */
+ {
+ struct stat st_exec;
+
+ #ifdef HEADER_SEEK_FD
+ HEADER_SEEK_FD (execchan);
+ #endif
+
+ val = myread (execchan, &exec_aouthdr, sizeof (AOUTHDR));
+
+ if (val < 0)
+ perror_with_name (filename);
+
+ text_start = N_TXTADDR (exec_aouthdr);
+ exec_data_start = N_DATADDR (exec_aouthdr);
+
+ text_offset = N_TXTOFF (exec_aouthdr);
+ exec_data_offset = N_TXTOFF (exec_aouthdr) + exec_aouthdr.a_text;
+
+ text_end = 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;
+ }
+ #endif /* not COFF_FORMAT */
+
+ validate_files ();
+ }
+ else if (from_tty)
+ printf ("No exec file now.\n");
+
+ /* Tell display code (if any) about the changed file name. */
+ if (exec_file_display_hook)
+ (*exec_file_display_hook) (filename);
+ }
diff -cr2N dist-gdb/coffread.c gdb-3.1.1.a/coffread.c
*** dist-gdb/coffread.c Mon Jan 30 23:20:36 1989
--- gdb-3.1.1.a/coffread.c Sat Apr 1 08:15:02 1989
***************
*** 30,33 ****
--- 30,34 ----
#include <sys/types.h>
#include <sys/fcntl.h>
+ int fclose ();
#endif
***************
*** 1074,1077 ****
--- 1075,1081 ----
switch (file_hdr->f_magic)
{
+ #ifdef MC68MAGIC
+ case MC68MAGIC:
+ #endif
#ifdef NS32GMAGIC
case NS32GMAGIC:
diff -cr2N dist-gdb/config.gdb gdb-3.1.1.a/config.gdb
*** dist-gdb/config.gdb Tue Jan 31 00:25:15 1989
--- gdb-3.1.1.a/config.gdb Thu Mar 30 16:47:57 1989
***************
*** 55,58 ****
--- 55,74 ----
opcodefile=vax-opcode.h
;;
+ altos)
+ echo "Do a make clean if you have compiled a version of gdb"
+ echo "without the coff encapsulation stuff"
+ pinsnfile=m68k-pinsn.c
+ opcodefile=m68k-opcode.h
+ ;;
+ altosgas)
+ echo "Do a make clean if you have compiled a version of gdb"
+ echo "with the coff encapsulation stuff"
+ echo " "
+ echo "Use of the coff encapsulation features requires the GNU binutils utilities"
+ echo "to be ahead of their System V counterparts in your path."
+ pinsnfile=m68k-pinsn.c
+ depfile=altos-dep.c
+ opcodefile=m68k-opcode.h
+ ;;
hp9k320)
pinsnfile=m68k-pinsn.c
diff -cr2N dist-gdb/core.c gdb-3.1.1.a/core.c
*** dist-gdb/core.c Sat Jan 21 02:54:14 1989
--- gdb-3.1.1.a/core.c Thu Mar 30 17:09:32 1989
***************
*** 46,49 ****
--- 46,55 ----
#include <sys/stat.h>
+ #ifdef USG
+ #include <sys/page.h>
+ #ifdef ALTOS
+ #include <sys/net.h>
+ #endif
+ #endif
#ifdef UMAX_CORE
#include <sys/ptrace.h>
diff -cr2N dist-gdb/inflow.c gdb-3.1.1.a/inflow.c
*** dist-gdb/inflow.c Thu Jan 26 04:03:39 1989
--- gdb-3.1.1.a/inflow.c Thu Mar 30 17:10:13 1989
***************
*** 36,39 ****
--- 36,43 ----
have migrated to *-infdep.c */
#ifdef USG
+ #include <sys/page.h>
+ #ifdef ALTOS
+ #include <sys/net.h>
+ #endif
#include <sys/user.h>
#endif
diff -cr2N dist-gdb/m-altos.h gdb-3.1.1.a/m-altos.h
*** dist-gdb/m-altos.h Thu Jan 1 03:00:00 1970
--- gdb-3.1.1.a/m-altos.h Mon Apr 3 12:38:45 1989
***************
*** 0 ****
--- 1,786 ----
+ /* Definitions to make GDB run on an Altos 3068 (m68k running SVR2)
+ Copyright (C) 1987,1989 Free Software Foundation, Inc.
+
+ GDB is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY. No author or distributor accepts responsibility to anyone
+ for the consequences of using it or for whether it serves any
+ particular purpose or works at all, unless he says so in writing.
+ Refer to the GDB General Public License for full details.
+
+ Everyone is granted permission to copy, modify and redistribute GDB,
+ but only under the conditions described in the GDB General Public
+ License. A copy of this license is supposed to have been given to you
+ along with GDB so you can know your rights and responsibilities. It
+ should be in a file named COPYING. Among other things, the copyright
+ notice and this notice must be preserved on all copies.
+
+ In other words, go ahead and share GDB, but don't try to stop
+ anyone else from sharing it farther. Help stamp out software hoarding!
+ */
+
+ #ifndef ALTOS
+ #define ALTOS
+ #endif
+
+ #define USG
+
+ #define HAVE_TERMIO
+
+ #define CBREAK XTABS /* It takes all kinds... */
+
+ /*
+ * #define FLOATING_POINT if you have 68881
+ * This hasn't been tested
+ */
+
+ /*#define FLOATING_POINT*/
+ /*#undef FLOATING_POINT*/
+
+ #ifndef __GNUC__
+ #define ALTOS_AND
+ #undef USE_GAS
+ #define ALTOS_AS
+ #else
+ #define USE_GAS
+ #endif
+
+ #ifndef R_OK
+ #define R_OK 4
+ #define W_OK 2
+ #define X_OK 1
+ #define F_OK 0
+ #endif
+
+ #ifndef MAXPATHLEN
+ #define MAXPATHLEN (1024)
+ #endif
+
+ /* Motorola assembly format */
+ #if !defined(USE_GAS) && !defined(ALTOS)
+ #define MOTOROLA
+ #endif
+
+ /* Get sys/wait.h ie. from a Sun and edit it a little (mc68000 to m68k) */
+ #define HAVE_WAIT_STRUCT
+
+ /* Define this if the C compiler puts an underscore at the front
+ of external names before giving them to the linker. */
+
+ #undef NAMES_HAVE_UNDERSCORE
+
+ /* Exec files and symbol tables are in COFF format */
+
+ #define COFF_FORMAT
+ #define ALTOS_CORE
+ #define COFF_NO_LONG_FILE_NAMES
+ #define vfork fork
+
+ /* Offset from address of function to start of its code.
+ Zero on most machines. */
+
+ #define FUNCTION_START_OFFSET 0
+
+ /* Advance PC across any function entry prologue instructions
+ to reach some "real" code. */
+
+ #define SKIP_PROLOGUE(pc) \
+ { register int op = read_memory_integer (pc, 2); \
+ if (op == 0047126) \
+ pc += 4; /* Skip link #word */ \
+ else if (op == 0044016) \
+ pc += 6; /* Skip link #long */ \
+ else if (op == 0060000) \
+ pc += 4; /* Skip bra #word */ \
+ else if (op == 00600377) \
+ pc += 6; /* skip bra #long */ \
+ else if ((op & 0177400) == 0060000) \
+ pc += 2; /* skip bra #char */ \
+ }
+
+ /* Immediately after a function call, return the saved pc.
+ Can't always go through the frames for this because on some machines
+ the new frame is not set up until the new function executes
+ some instructions. */
+
+ #define SAVED_PC_AFTER_CALL(frame) \
+ read_memory_integer (read_register (SP_REGNUM), 4)
+
+ /* This is the amount to subtract from u.u_ar0
+ to get the offset in the core file of the register values. */
+
+ #define KERNEL_U_ADDR 0x1fbf000
+
+ /* Address of end of stack space. */
+
+ /*#define STACK_END_ADDR (0xffffff)*/
+ #define STACK_END_ADDR (0x1000000)
+
+ /* Stack grows downward. */
+
+ #define INNER_THAN <
+
+ /* Sequence of bytes for breakpoint instruction. */
+
+ #define BREAKPOINT {0x4e, 0x4e}
+
+ /* Amount PC must be decremented by after a breakpoint.
+ This is often the number of bytes in BREAKPOINT
+ but not always.
+ On the Altos, the kernel resets the pc to the trap instr */
+
+ #define DECR_PC_AFTER_BREAK 0
+
+ /* Nonzero if instruction at PC is a return instruction. */
+
+ #define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 2) == 0x4e75)
+
+ /* Return 1 if P points to an invalid floating point value. */
+
+ #define INVALID_FLOAT(p, len) (*((int *) (p)) == -1) /* Just a first guess; not checked */
+
+ /* Largest integer type */
+ #define LONGEST long
+
+ /* Name of the builtin type for the LONGEST type above. */
+ #define BUILTIN_TYPE_LONGEST builtin_type_long
+
+ /* Say how long (ordinary) registers are. */
+
+ #define REGISTER_TYPE long
+
+ /* Say how long (ordinary) registers are. */
+
+ #define REGISTER_TYPE long
+
+ /* Number of machine registers */
+
+ #ifdef FLOATING_POINT
+ #define NUM_REGS 31
+ #else
+ #define NUM_REGS 18
+ #endif
+
+ /* Initializer for an array of names of registers.
+ There should be NUM_REGS strings in this initializer. */
+
+ #ifdef FLOATING_POINT
+ #define REGISTER_NAMES \
+ {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
+ "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
+ "ps", "pc", \
+ "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7", \
+ "fpcontrol", "fpstatus", "fpiaddr", "fpcode", "fpflags" \
+ }
+ #else
+ #define REGISTER_NAMES \
+ {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \
+ "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp", \
+ "ps", "pc", \
+ }
+ #endif
+
+ /* Register numbers of various important registers.
+ Note that some of these values are "real" register numbers,
+ and correspond to the general registers of the machine,
+ and some are "phony" register numbers which are too large
+ to be actual register numbers as far as the user is concerned
+ but do serve to get the desired values when passed to read_register. */
+
+ #define FP_REGNUM 14 /* Contains address of executing stack frame */
+ #define SP_REGNUM 15 /* Contains address of top of stack */
+ #define PS_REGNUM 16 /* Contains processor status */
+ #define PC_REGNUM 17 /* Contains program counter */
+ #define FP0_REGNUM 18 /* Floating point register 0 */
+ #define FPC_REGNUM 26 /* 68881 control register */
+
+ /* Total amount of space needed to store our copies of the machine's
+ register state, the array `registers'. */
+ #define REGISTER_BYTES (16*4+8*12+8+20)
+
+ /* Index within `registers' of the first byte of the space for
+ register N. */
+
+ #define REGISTER_BYTE(N) \
+ ((N) >= FPC_REGNUM ? (((N) - FPC_REGNUM) * 4) + 168 \
+ : (N) >= FP0_REGNUM ? (((N) - FP0_REGNUM) * 12) + 72 \
+ : (N) * 4)
+
+ /* Number of bytes of storage in the actual machine representation
+ for register N. On the 68000, all regs are 4 bytes
+ except the floating point regs which are 12 bytes. */
+
+ #define REGISTER_RAW_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 12 : 4)
+
+ /* Number of bytes of storage in the program's representation
+ for register N. On the 68000, all regs are 4 bytes
+ except the floating point regs which are 8-byte doubles. */
+
+ #define REGISTER_VIRTUAL_SIZE(N) (((unsigned)(N) - FP0_REGNUM) < 8 ? 8 : 4)
+
+ #define REGISTER_U_ADDR(addr, blockend, regno) \
+ { if (regno <= SP_REGNUM) \
+ addr = blockend + regno * 4; \
+ else if (regno == PS_REGNUM) \
+ addr = blockend + regno * 4 + 4; \
+ else if (regno == PC_REGNUM) \
+ addr = blockend + regno * 4 + 2; \
+ }
+
+ /* Largest value REGISTER_RAW_SIZE can have. */
+
+ #define MAX_REGISTER_RAW_SIZE 12
+
+ /* Largest value REGISTER_VIRTUAL_SIZE can have. */
+
+ #define MAX_REGISTER_VIRTUAL_SIZE 8
+
+ /* Nonzero if register N requires conversion
+ from raw format to virtual format. */
+
+ #define REGISTER_CONVERTIBLE(N) (((unsigned)(N) - FP0_REGNUM) < 8)
+
+ /* Convert data from raw format for register REGNUM
+ to virtual format for register REGNUM. */
+
+ #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
+ { if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM) \
+ convert_from_68881 ((FROM), (TO)); \
+ else \
+ bcopy ((FROM), (TO), 4); }
+
+ /* Convert data from virtual format for register REGNUM
+ to raw format for register REGNUM. */
+
+ #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
+ { if ((REGNUM) >= FP0_REGNUM && (REGNUM) < FPC_REGNUM) \
+ convert_to_68881 ((FROM), (TO)); \
+ else \
+ bcopy ((FROM), (TO), 4); }
+
+ /* Return the GDB type object for the "standard" data type
+ of data in register N. */
+
+ #define REGISTER_VIRTUAL_TYPE(N) \
+ (((unsigned)(N) - FP0_REGNUM) < 8 ? builtin_type_double : builtin_type_int)
+
+ /* Store the address of the place in which to copy the structure the
+ subroutine will return. This is called from call_function. */
+
+ #define STORE_STRUCT_RETURN(ADDR, SP) \
+ { write_register (9, (ADDR)); }
+
+ /* Extract from an array REGBUF containing the (raw) register state
+ a function return value of type TYPE, and copy that, in virtual format,
+ into VALBUF. */
+
+ #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+ bcopy (REGBUF, VALBUF, TYPE_LENGTH (TYPE))
+
+ /* Write into appropriate registers a function return value
+ of type TYPE, given in virtual format. */
+
+ #define STORE_RETURN_VALUE(TYPE,VALBUF) \
+ write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE))
+
+ /* Extract from an array REGBUF containing the (raw) register state
+ the address in which a function should return its structure value,
+ as a CORE_ADDR (or an expression that can be used as one). */
+
+ #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF))
+
+ #define REGISTER_ADDR(u_ar0, regno) \
+ (((regno) < PS_REGNUM) \
+ ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)]) \
+ : (((regno) == PS_REGNUM) \
+ ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS)) \
+ : (&((struct exception_stack *) (u_ar0))->e_PC)))
+
+ #define FP_REGISTER_ADDR(u, regno) \
+ (((char *) \
+ (((regno) < FPC_REGNUM) \
+ ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \
+ : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)]))) \
+ - ((char *) (& u)))
+
+ /* It is safe to look for symsegs on a Sun, because Sun's ld
+ does not screw up with random garbage at end of file.
+ Don't quite know what this means, methinks it's the out-of-date
+ GNU symbolig infromation (-gg option for gcc) */
+
+ /*#define READ_GDB_SYMSEGS*/
+
+ /* Describe the pointer in each stack frame to the previous stack frame
+ (its caller). */
+
+ /* FRAME_CHAIN takes a frame's nominal address
+ and produces the frame's chain-pointer.
+
+ FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
+ and produces the nominal address of the caller frame.
+
+ However, if FRAME_CHAIN_VALID returns zero,
+ it means the given frame is the outermost one and has no caller.
+ In that case, FRAME_CHAIN_COMBINE is not used. */
+
+ /* In the case of the Altos, the frame's nominal address
+ is the address of a 4-byte word containing the calling frame's address. */
+
+ #define FRAME_CHAIN(thisframe) (read_memory_integer ((thisframe)->frame, 4))
+
+ #define FRAME_CHAIN_VALID(chain, thisframe) \
+ (chain != 0 && (FRAME_SAVED_PC (thisframe) >= first_object_file_end))
+
+ #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
+
+ /* Define other aspects of the stack frame. */
+
+ #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4))
+
+ #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
+
+ #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
+
+ /* Set VAL to the number of args passed to frame described by FI.
+ Can set VAL to -1, meaning no way to tell. */
+
+ /* Return number of args passed to a frame.
+ Can return -1, meaning no way to tell. */
+
+ /* We can't tell how many args there are
+ now that the (gnu) C compiler delays popping them.
+ Perhaps we could tell if we use the Altos cc, but I'm not sure
+ COFF_FORMAT is the right conditional */
+
+ #ifdef COFF_FORMAT
+
+ #define FRAME_NUM_ARGS(val, fi) (val = -1)
+ #if 0
+ #define FRAME_NUM_ARGS(val, fi) \
+ { register CORE_ADDR pc = FRAME_SAVED_PC (fi.frame); \
+ register int insn = 0177777 & read_memory_integer (pc, 2); \
+ val = 0; \
+ if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ \
+ val = read_memory_integer (pc + 2, 2); \
+ else if ((insn & 0170777) == 0050217 /* addql #N, sp */ \
+ || (insn & 0170777) == 0050117) /* addqw */ \
+ { val = (insn >> 9) & 7; if (val == 0) val = 8; } \
+ else if (insn == 0157774) /* addal #WW, sp */ \
+ val = read_memory_integer (pc + 2, 4); \
+ val >>= 2; }
+ #endif
+
+ /* Return number of bytes at start of arglist that are not really args. */
+
+ #define FRAME_ARGS_SKIP 8
+
+ /* Put here the code to store, into a struct frame_saved_regs,
+ the addresses of the saved registers of frame described by FRAME_INFO.
+ This includes special registers such as pc and fp saved in special
+ ways in the stack frame. sp is even more special:
+ the address we return for it IS the sp for the next frame. */
+
+ #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
+ { register int regnum; \
+ register int regmask; \
+ register CORE_ADDR next_addr; \
+ register CORE_ADDR pc; \
+ int nextinsn; \
+ bzero (&frame_saved_regs, sizeof frame_saved_regs); \
+ if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \
+ && (frame_info)->pc <= (frame_info)->frame) \
+ { next_addr = (frame_info)->frame; \
+ pc = (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\
+ else \
+ { pc = get_pc_function_start ((frame_info)->pc); \
+ /* Verify we have a link a6 instruction next; \
+ if not we lose. If we win, find the address above the saved \
+ regs using the amount of storage from the link instruction. */\
+ if (044016 == read_memory_integer (pc, 2)) \
+ next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 4), pc+=4; \
+ else if (047126 == read_memory_integer (pc, 2)) \
+ next_addr = (frame_info)->frame + read_memory_integer (pc += 2, 2), pc+=2; \
+ else goto lose; \
+ /* If have an addal #-n, sp next, adjust next_addr. */ \
+ if ((0177777 & read_memory_integer (pc, 2)) == 0157774) \
+ next_addr += read_memory_integer (pc += 2, 4), pc += 4; \
+ } \
+ /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */ \
+ regmask = read_memory_integer (pc + 2, 2); \
+ /* But before that can come an fmovem. Check for it. */ \
+ nextinsn = 0xffff & read_memory_integer (pc, 2); \
+ if (0xf227 == nextinsn \
+ && (regmask & 0xff00) == 0xe000) \
+ { pc += 4; /* Regmask's low bit is for register fp7, the first pushed */ \
+ for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr -= 12); \
+ regmask = read_memory_integer (pc + 2, 2); } \
+ if (0044327 == read_memory_integer (pc, 2)) \
+ { pc += 4; /* Regmask's low bit is for register 0, the first written */ \
+ for (regnum = 0; regnum < 16; regnum++, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr += 4) - 4; } \
+ else if (0044347 == read_memory_integer (pc, 2)) \
+ { pc += 4; /* Regmask's low bit is for register 15, the first pushed */ \
+ for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \
+ else if (0x2f00 == 0xfff0 & read_memory_integer (pc, 2)) \
+ { regnum = 0xf & read_memory_integer (pc, 2); pc += 2; \
+ (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \
+ /* fmovemx to index of sp may follow. */ \
+ regmask = read_memory_integer (pc + 2, 2); \
+ nextinsn = 0xffff & read_memory_integer (pc, 2); \
+ if (0xf236 == nextinsn \
+ && (regmask & 0xff00) == 0xf000) \
+ { pc += 10; /* Regmask's low bit is for register fp0, the first written */ \
+ for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr += 12) - 12; \
+ regmask = read_memory_integer (pc + 2, 2); } \
+ /* clrw -(sp); movw ccr,-(sp) may follow. */ \
+ if (0x426742e7 == read_memory_integer (pc, 4)) \
+ (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4); \
+ lose: ; \
+ (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 8; \
+ (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame; \
+ (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4; \
+ }
+
+ #if 0
+ { register int regnum; \
+ register int regmask; \
+ register CORE_ADDR next_addr; \
+ register CORE_ADDR pc; \
+ int nextinsn; \
+ bzero (&frame_saved_regs, sizeof frame_saved_regs); \
+ if ((frame_info).pc >= (frame_info).frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \
+ && (frame_info).pc <= (frame_info).frame) \
+ { next_addr = (frame_info).frame; \
+ pc = (frame_info).frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\
+ else \
+ { pc = get_pc_function_start ((frame_info).pc); \
+ /* Verify we have a link a6 instruction next; \
+ if not we lose. If we win, find the address above the saved \
+ regs using the amount of storage from the link instruction. */\
+ if (044016 == read_memory_integer (pc, 2)) \
+ next_addr = (frame_info).frame + read_memory_integer (pc += 2, 4), pc+=4; \
+ else if (047126 == read_memory_integer (pc, 2)) \
+ next_addr = (frame_info).frame + read_memory_integer (pc += 2, 2), pc+=2; \
+ else goto lose; \
+ /* If have an addal #-n, sp next, adjust next_addr. */ \
+ if ((0177777 & read_memory_integer (pc, 2)) == 0157774) \
+ next_addr += read_memory_integer (pc += 2, 4), pc += 4; \
+ } \
+ /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */ \
+ regmask = read_memory_integer (pc + 2, 2); \
+ /* But before that can come an fmovem. Check for it. */ \
+ nextinsn = 0xffff & read_memory_integer (pc, 2); \
+ if (0xf227 == nextinsn \
+ && (regmask & 0xff00) == 0xe000) \
+ { pc += 4; /* Regmask's low bit is for register fp7, the first pushed */ \
+ for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr -= 12); \
+ regmask = read_memory_integer (pc + 2, 2); } \
+ if (0044327 == read_memory_integer (pc, 2)) \
+ { pc += 4; /* Regmask's low bit is for register 0, the first written */ \
+ for (regnum = 0; regnum < 16; regnum++, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr += 4) - 4; } \
+ else if (0044347 == read_memory_integer (pc, 2)) \
+ { pc += 4; /* Regmask's low bit is for register 15, the first pushed */ \
+ for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \
+ else if (0x2f00 == 0xfff0 & read_memory_integer (pc, 2)) \
+ { regnum = 0xf & read_memory_integer (pc, 2); pc += 2; \
+ (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \
+ /* fmovemx to index of sp may follow. */ \
+ regmask = read_memory_integer (pc + 2, 2); \
+ nextinsn = 0xffff & read_memory_integer (pc, 2); \
+ if (0xf236 == nextinsn \
+ && (regmask & 0xff00) == 0xf000) \
+ { pc += 10; /* Regmask's low bit is for register fp0, the first written */ \
+ for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr += 12) - 12; \
+ regmask = read_memory_integer (pc + 2, 2); } \
+ /* clrw -(sp); movw ccr,-(sp) may follow. */ \
+ if (0x426742e7 == read_memory_integer (pc, 4)) \
+ (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4); \
+ lose: ; \
+ (frame_saved_regs).regs[SP_REGNUM] = (frame_info).frame + 8; \
+ (frame_saved_regs).regs[FP_REGNUM] = (frame_info).frame; \
+ (frame_saved_regs).regs[PC_REGNUM] = (frame_info).frame + 4; \
+ }
+ #endif
+ #if 0
+ #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
+ { register int regnum; \
+ register int regmask; \
+ register CORE_ADDR next_addr; \
+ register CORE_ADDR pc; \
+ register int insn; \
+ register int offset; \
+ bzero (&frame_saved_regs, sizeof frame_saved_regs); \
+ if ((frame_info).pc >= (frame_info).frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \
+ && (frame_info).pc <= (frame_info).frame) \
+ { next_addr = (frame_info).frame; \
+ pc = (frame_info).frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\
+ else \
+ { pc = get_pc_function_start ((frame_info).pc); \
+ /* Verify we have a link a6 instruction next, \
+ or a branch followed by a link a6 instruction; \
+ if not we lose. If we win, find the address above the saved \
+ regs using the amount of storage from the link instruction. */\
+ retry: \
+ insn = read_memory_integer (pc, 2); \
+ if (insn == 044016) \
+ next_addr = (frame_info).frame - read_memory_integer (pc += 2, 4), pc+=4; \
+ else if (insn == 047126) \
+ next_addr = (frame_info).frame - read_memory_integer (pc += 2, 2), pc+=2; \
+ else if ((insn & 0177400) == 060000) /* bra insn */ \
+ { offset = insn & 0377; \
+ pc += 2; /* advance past bra */ \
+ if (offset == 0) /* bra #word */ \
+ offset = read_memory_integer (pc, 2), pc += 2; \
+ else if (offset == 0377) /* bra #long */ \
+ offset = read_memory_integer (pc, 4), pc += 4; \
+ pc += offset; \
+ goto retry; \
+ } else goto lose; \
+ /* If have an addal #-n, sp next, adjust next_addr. */ \
+ if ((0177777 & read_memory_integer (pc, 2)) == 0157774) \
+ next_addr += read_memory_integer (pc += 2, 4), pc += 4; \
+ } \
+ /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */ \
+ insn = read_memory_integer (pc, 2), pc += 2; \
+ regmask = read_memory_integer (pc, 2); \
+ if ((insn & 0177760) == 022700) /* movl rn, (sp) */ \
+ (frame_saved_regs).regs[(insn&7) + ((insn&010)?8:0)] = next_addr; \
+ else if ((insn & 0177760) == 024700) /* movl rn, -(sp) */ \
+ (frame_saved_regs).regs[(insn&7) + ((insn&010)?8:0)] = next_addr-=4; \
+ else if (insn == 0044327) /* moveml mask, (sp) */ \
+ { pc += 2; \
+ /* Regmask's low bit is for register 0, the first written */ \
+ next_addr -= 4; \
+ for (regnum = 0; regnum < 16; regnum++, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr += 4); \
+ } else if (insn == 0044347) /* moveml mask, -(sp) */ \
+ { pc += 2; \
+ /* Regmask's low bit is for register 15, the first pushed */ \
+ for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1) \
+ if (regmask & 1) \
+ (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \
+ /* clrw -(sp); movw ccr,-(sp) may follow. */ \
+ if (read_memory_integer (pc, 2) == 041147 \
+ && read_memory_integer (pc+2, 2) == 042347) \
+ (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4); \
+ lose: ; \
+ (frame_saved_regs).regs[SP_REGNUM] = (frame_info).frame + 8; \
+ (frame_saved_regs).regs[FP_REGNUM] = (frame_info).frame; \
+ (frame_saved_regs).regs[PC_REGNUM] = (frame_info).frame + 4; \
+ }
+ #endif
+ #else
+ #define FRAME_NUM_ARGS(val, fi) (val = -1)
+ #endif
+
+ /* Things needed for making the inferior call functions. */
+
+ /* Push an empty stack frame, to record the current PC, etc. */
+
+ #define PUSH_DUMMY_FRAME \
+ { register CORE_ADDR sp = read_register (SP_REGNUM); \
+ register int regnum; \
+ char raw_buffer[12]; \
+ sp = push_word (sp, read_register (PC_REGNUM)); \
+ sp = push_word (sp, read_register (FP_REGNUM)); \
+ write_register (FP_REGNUM, sp); \
+ for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \
+ { read_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); \
+ sp = push_bytes (sp, raw_buffer, 12); } \
+ for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \
+ sp = push_word (sp, read_register (regnum)); \
+ sp = push_word (sp, read_register (PS_REGNUM)); \
+ write_register (SP_REGNUM, sp); }
+
+ /* Discard from the stack the innermost frame,
+ restoring all saved registers. */
+
+ #define POP_FRAME \
+ { register FRAME frame = get_current_frame (); \
+ register CORE_ADDR fp; \
+ register int regnum; \
+ struct frame_saved_regs fsr; \
+ struct frame_info *fi; \
+ char raw_buffer[12]; \
+ fi = get_frame_info (frame); \
+ fp = fi->frame; \
+ get_frame_saved_regs (fi, &fsr); \
+ for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--) \
+ if (fsr.regs[regnum]) \
+ { read_memory (fsr.regs[regnum], raw_buffer, 12); \
+ write_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12); }\
+ for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--) \
+ if (fsr.regs[regnum]) \
+ write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); \
+ if (fsr.regs[PS_REGNUM]) \
+ write_register (PS_REGNUM, read_memory_integer (fsr.regs[PS_REGNUM], 4)); \
+ write_register (FP_REGNUM, read_memory_integer (fp, 4)); \
+ write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); \
+ write_register (SP_REGNUM, fp + 8); \
+ flush_cached_frames (); \
+ set_current_frame (create_new_frame (read_register (FP_REGNUM),\
+ read_pc ()));}
+
+ /* This sequence of words is the instructions
+ fmovem 0xff,-(sp)
+ moveml 0xfffc,-(sp)
+ clrw -(sp)
+ movew ccr,-(sp)
+ /..* The arguments are pushed at this point by GDB;
+ no code is needed in the dummy for this.
+ The CALL_DUMMY_START_OFFSET gives the position of
+ the following jsr instruction. *../
+ jsr @#32323232
+ addl #69696969,sp
+ bpt
+ nop
+ Note this is 28 bytes.
+ We actually start executing at the jsr, since the pushing of the
+ registers is done by PUSH_DUMMY_FRAME. If this were real code,
+ the arguments for the function called by the jsr would be pushed
+ between the moveml and the jsr, and we could allow it to execute through.
+ But the arguments have to be pushed by GDB after the PUSH_DUMMY_FRAME is done,
+ and we cannot allow the moveml to push the registers again lest they be
+ taken for the arguments. */
+
+ #define CALL_DUMMY {0xf227e0ff, 0x48e7fffc, 0x426742e7, 0x4eb93232, 0x3232dffc, 0x69696969, 0x4e4e4e71}
+
+ #define CALL_DUMMY_LENGTH 28
+
+ #define CALL_DUMMY_START_OFFSET 12
+
+ /* Insert the specified number of args and function address
+ into a call sequence of the above form stored at DUMMYNAME. */
+
+ #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, type) \
+ { *(int *)((char *) dummyname + 20) = nargs * 4; \
+ *(int *)((char *) dummyname + 14) = fun; }
+
+ /* Interface definitions for kernel debugger KDB. */
+
+ /* Map machine fault codes into signal numbers.
+ First subtract 0, divide by 4, then index in a table.
+ Faults for which the entry in this table is 0
+ are not handled by KDB; the program's own trap handler
+ gets to handle then. */
+
+ #define FAULT_CODE_ORIGIN 0
+ #define FAULT_CODE_UNITS 4
+ #define FAULT_TABLE \
+ { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
+ 0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
+ 0, 0, 0, 0, 0, 0, 0, 0, \
+ SIGILL }
+
+ /* Start running with a stack stretching from BEG to END.
+ BEG and END should be symbols meaningful to the assembler.
+ This is used only for kdb. */
+
+ #ifdef MOTOROLA
+ #define INIT_STACK(beg, end) \
+ { asm (".globl end"); \
+ asm ("move.l $ end, sp"); \
+ asm ("clr.l fp"); }
+ #else
+ #ifdef ALTOS_AS
+ #define INIT_STACK(beg, end) \
+ { asm ("global end"); \
+ asm ("mov.l &end,%sp"); \
+ asm ("clr.l %fp"); }
+ #else
+ #define INIT_STACK(beg, end) \
+ { asm (".globl end"); \
+ asm ("movel $ end, sp"); \
+ asm ("clrl fp"); }
+ #endif
+ #endif
+
+ /* Push the frame pointer register on the stack. */
+ #ifdef MOTOROLA
+ #define PUSH_FRAME_PTR \
+ asm ("move.l fp, -(sp)");
+ #else
+ #ifdef ALTOS_AS
+ #define PUSH_FRAME_PTR \
+ asm ("mov.l %fp, -(%sp)");
+ #else
+ #define PUSH_FRAME_PTR \
+ asm ("movel fp, -(sp)");
+ #endif
+ #endif
+
+ /* Copy the top-of-stack to the frame pointer register. */
+ #ifdef MOTOROLA
+ #define POP_FRAME_PTR \
+ asm ("move.l (sp), fp");
+ #else
+ #ifdef ALTOS_AS
+ #define POP_FRAME_PTR \
+ asm ("mov.l (%sp), %fp");
+ #else
+ #define POP_FRAME_PTR \
+ asm ("movl (sp), fp");
+ #endif
+ #endif
+
+ /* After KDB is entered by a fault, push all registers
+ that GDB thinks about (all NUM_REGS of them),
+ so that they appear in order of ascending GDB register number.
+ The fault code will be on the stack beyond the last register. */
+
+ #ifdef MOTOROLA
+ #define PUSH_REGISTERS \
+ { asm ("clr.w -(sp)"); \
+ asm ("pea (10,sp)"); \
+ asm ("movem $ 0xfffe,-(sp)"); }
+ #else
+ #ifdef ALTOS_AS
+ #define PUSH_REGISTERS \
+ { asm ("clr.w -(%sp)"); \
+ asm ("pea (10,%sp)"); \
+ asm ("movm.l &0xfffe,-(%sp)"); }
+ #else
+ #define PUSH_REGISTERS \
+ { asm ("clrw -(sp)"); \
+ asm ("pea 10(sp)"); \
+ asm ("movem $ 0xfffe,-(sp)"); }
+ #endif
+ #endif
+
+ /* Assuming the registers (including processor status) have been
+ pushed on the stack in order of ascending GDB register number,
+ restore them and return to the address in the saved PC register. */
+
+ #ifdef MOTOROLA
+ #define POP_REGISTERS \
+ { asm ("subi.l $8,28(sp)"); \
+ asm ("movem (sp),$ 0xffff"); \
+ asm ("rte"); }
+ #else
+ #ifdef ALTOS_AS
+ #define POP_REGISTERS \
+ { asm ("sub.l &8,28(%sp)"); \
+ asm ("movem (%sp),&0xffff"); \
+ asm ("rte"); }
+ #else
+ #define POP_REGISTERS \
+ { asm ("subil $8,28(sp)"); \
+ asm ("movem (sp),$ 0xffff"); \
+ asm ("rte"); }
+ #endif
+ #endif
diff -cr2N dist-gdb/m-altosgas.h gdb-3.1.1.a/m-altosgas.h
*** dist-gdb/m-altosgas.h Thu Jan 1 03:00:00 1970
--- gdb-3.1.1.a/m-altosgas.h Thu Mar 30 16:48:33 1989
***************
*** 0 ****
--- 1,29 ----
+ /*
+ Copyright (C) 1986, 1987 Free Software Foundation, Inc.
+
+ GDB is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY. No author or distributor accepts responsibility to anyone
+ for the consequences of using it or for whether it serves any
+ particular purpose or works at all, unless he says so in writing.
+ Refer to the GDB General Public License for full details.
+
+ Everyone is granted permission to copy, modify and redistribute GDB,
+ but only under the conditions described in the GDB General Public
+ License. A copy of this license is supposed to have been given to you
+ along with GDB so you can know your rights and responsibilities. It
+ should be in a file named COPYING. Among other things, the copyright
+ notice and this notice must be preserved on all copies.
+
+ In other words, go ahead and share GDB, but don't try to stop
+ anyone else from sharing it farther. Help stamp out software hoarding!
+ */
+
+ #define COFF_ENCAPSULATE
+
+ #include "m-altos.h"
+
+ #undef COFF_FORMAT
+ #undef COFF_NO_LONG_FILE_NAMES
+ #define NAMES_HAVE_UNDERSCORE
+
+ #define READ_DBX_FORMAT
//Jyrki