Thread View: gnu.gdb.bug
1 messages
1 total messages
Started by Jyrki Kuoppala
Mon, 03 Apr 1989 10:08
Diffs to get gdb 3.1.1 working on Altos 3068 (m68k SVR2)
Author: Jyrki Kuoppala
Date: Mon, 03 Apr 1989 10:08
Date: Mon, 03 Apr 1989 10:08
1655 lines
57211 bytes
57211 bytes
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
Thread Navigation
This is a paginated view of messages in the thread with full content displayed inline.
Messages are displayed in chronological order, with the original post highlighted in green.
Use pagination controls to navigate through all messages in large threads.
Back to All Threads