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* Makefile.in (SFILES): Update.

Browse Source 
* low-hppabsd.c, low-lynx.c, low-nbsd.c, low-sim.c, low-sparc.c,
	low-sun3.c: Remove files.
This commit is contained in:
Daniel Jacobowitz 2003-06-20 14:08:16 +00:00
parent 0b1b50c059
commit 73d37363f3
8 changed files with 16 additions and 2577 deletions
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6
gdb/gdbserver/ChangeLog
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@ -1,3 +1,9 @@
2003-06-20 Daniel Jacobowitz <drow@mvista.com>
* Makefile.in (SFILES): Update.
* low-hppabsd.c, low-lynx.c, low-nbsd.c, low-sim.c, low-sparc.c,
low-sun3.c: Remove files.
2003-06-17 Daniel Jacobowitz <drow@mvista.com>
* linux-low.c: Move comment to linux_thread_alive where it belonged.

14
gdb/gdbserver/Makefile.in
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@ -113,10 +113,16 @@ LINTFLAGS= $(BFD_CFLAGS)
# All source files that go into linking GDB remote server.
SFILES = $(srcdir)/low-hppabsd.c $(srcdir)/low-linux.c $(srcdir)/low-lynx.c \
$(srcdir)/low-nbsd.c $(srcdir)/low-sim.c $(srcdir)/low-sparc.c \
$(srcdir)/low-sun3.c $(srcdir)/utils.c $(srcdir)/server.c \
$(srcdir)/remote-utils.c
SFILES= $(srcdir)/gdbreplay.c $(srcdir)/inferiors.c \
$(srcdir)/mem-break.c $(srcdir)/proc-service.c $(srcdir)/regcache.c \
$(srcdir)/remote-utils.c $(srcdir)/server.c $(srcdir)/target.c \
$(srcdir)/thread-db.c $(srcdir)/utils.c \
$(srcdir)/linux-arm-low.c $(srcdir)/linux-i386-low.c \
$(srcdir)/i387-fp.c \
$(srcdir)/linux-ia64-low.c $(srcdir)/linux-low.c \
$(srcdir)/linux-m68k-low.c $(srcdir)/linux-mips-low.c \
$(srcdir)/linux-ppc-low.c $(srcdir)/linux-s390-low.c \
$(srcdir)/linux-sh-low.c $(srcdir)/linux-x86-64-low.c
DEPFILES = @GDBSERVER_DEPFILES@

355
gdb/gdbserver/low-hppabsd.c
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@ -1,355 +0,0 @@
/* Low level interface to ptrace, for the remote server for GDB.
Copyright 1995, 1996, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "server.h"
#include <sys/wait.h>
#include "frame.h"
#include "inferior.h"
#include <stdio.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <sys/user.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sgtty.h>
#include <fcntl.h>
/***************Begin MY defs*********************/
static char my_registers[REGISTER_BYTES];
char *registers = my_registers;
/***************End MY defs*********************/
#include <sys/ptrace.h>
#include <machine/reg.h>
extern int errno;
/* Start an inferior process and returns its pid.
ALLARGS is a vector of program-name and args. */
int
create_inferior (char *program, char **allargs)
{
int pid;
pid = fork ();
if (pid < 0)
perror_with_name ("fork");
if (pid == 0)
{
ptrace (PT_TRACE_ME, 0, 0, 0, 0);
execv (program, allargs);
fprintf (stderr, "Cannot exec %s: %s.\n", program,
errno < sys_nerr ? sys_errlist[errno] : "unknown error");
fflush (stderr);
_exit (0177);
}
return pid;
}
/* Kill the inferior process. Make us have no inferior. */
void
kill_inferior (void)
{
if (inferior_pid == 0)
return;
ptrace (8, inferior_pid, 0, 0, 0);
wait (0);
/*************inferior_died ();****VK**************/
}
/* Attaching is not supported. */
int
myattach (int pid)
{
return -1;
}
/* Return nonzero if the given thread is still alive. */
int
mythread_alive (int pid)
{
return 1;
}
/* Wait for process, returns status */
unsigned char
mywait (char *status)
{
int pid;
union wait w;
enable_async_io ();
pid = waitpid (inferior_pid, &w, 0);
disable_async_io ();
if (pid != inferior_pid)
perror_with_name ("wait");
if (WIFEXITED (w))
{
fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
*status = 'W';
return ((unsigned char) WEXITSTATUS (w));
}
else if (!WIFSTOPPED (w))
{
fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
*status = 'X';
return ((unsigned char) WTERMSIG (w));
}
fetch_inferior_registers (0);
*status = 'T';
return ((unsigned char) WSTOPSIG (w));
}
/* Resume execution of the inferior process.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
void
myresume (int step, int signal)
{
errno = 0;
ptrace (step ? PT_STEP : PT_CONTINUE, inferior_pid, 1, signal, 0);
if (errno)
perror_with_name ("ptrace");
}
#if !defined (offsetof)
#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
#endif
/* U_REGS_OFFSET is the offset of the registers within the u area. */
#if !defined (U_REGS_OFFSET)
#define U_REGS_OFFSET \
ptrace (PT_READ_U, inferior_pid, \
(PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0) \
- KERNEL_U_ADDR
#endif
CORE_ADDR
register_addr (int regno, CORE_ADDR blockend)
{
CORE_ADDR addr;
if (regno < 0 || regno >= NUM_REGS)
error ("Invalid register number %d.", regno);
REGISTER_U_ADDR (addr, blockend, regno);
return addr;
}
/* Fetch one register. */
static void
fetch_register (int regno)
{
register unsigned int regaddr;
char buf[MAX_REGISTER_RAW_SIZE];
register int i;
/* Offset of registers within the u area. */
unsigned int offset;
offset = U_REGS_OFFSET;
regaddr = register_addr (regno, offset);
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
errno = 0;
*(int *) &registers[regno * 4 + i] = ptrace (PT_RUREGS, inferior_pid,
(PTRACE_ARG3_TYPE) regaddr, 0, 0);
regaddr += sizeof (int);
if (errno != 0)
{
/* Warning, not error, in case we are attached; sometimes the
kernel doesn't let us at the registers. */
char *err = strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "reading register %d: %s", regno, err);
error (msg);
goto error_exit;
}
}
error_exit:;
}
/* Fetch all registers, or just one, from the child process. */
void
fetch_inferior_registers (int regno)
{
if (regno == -1 || regno == 0)
for (regno = 0; regno < NUM_REGS; regno++)
fetch_register (regno);
else
fetch_register (regno);
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int regno)
{
register unsigned int regaddr;
char buf[80];
extern char registers[];
register int i;
unsigned int offset = U_REGS_OFFSET;
int scratch;
if (regno >= 0)
{
if (CANNOT_STORE_REGISTER (regno))
return;
regaddr = register_addr (regno, offset);
errno = 0;
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
{
scratch = *(int *) &registers[REGISTER_BYTE (regno)] | 0x3;
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
scratch, 0);
if (errno != 0)
{
/* Error, even if attached. Failing to write these two
registers is pretty serious. */
sprintf (buf, "writing register number %d", regno);
perror_with_name (buf);
}
}
else
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
errno = 0;
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
*(int *) &registers[REGISTER_BYTE (regno) + i], 0);
if (errno != 0)
{
/* Warning, not error, in case we are attached; sometimes the
kernel doesn't let us at the registers. */
char *err = strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "writing register %d: %s",
regno, err);
error (msg);
return;
}
regaddr += sizeof (int);
}
}
else
for (regno = 0; regno < NUM_REGS; regno++)
store_inferior_registers (regno);
}
/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
in the NEW_SUN_PTRACE case.
It ought to be straightforward. But it appears that writing did
not write the data that I specified. I cannot understand where
it got the data that it actually did write. */
/* Copy LEN bytes from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. */
void
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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));
/* Read all the longwords */
for (i = 0; i < count; i++, addr += sizeof (int))
{
buffer[i] = ptrace (1, inferior_pid, addr, 0, 0);
}
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
/* 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 (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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. */
buffer[0] = ptrace (1, inferior_pid, addr, 0, 0);
if (count > 1)
{
buffer[count - 1]
= ptrace (1, inferior_pid,
addr + (count - 1) * sizeof (int), 0, 0);
}
/* Copy data to be written over corresponding part of buffer */
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
/* Write the entire buffer. */
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
ptrace (4, inferior_pid, addr, buffer[i], 0);
if (errno)
return errno;
}
return 0;
}
void
initialize_low (void)
{
}

745
gdb/gdbserver/low-lynx.c
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@ -1,745 +0,0 @@
/* Low level interface to ptrace, for the remote server for GDB.
Copyright 1986, 1987, 1993, 1994, 1995, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "server.h"
#include "frame.h"
#include "inferior.h"
#include <stdio.h>
#include <sys/param.h>
#include <sys/dir.h>
#define LYNXOS
#include <sys/mem.h>
#include <sys/signal.h>
#include <sys/file.h>
#include <sys/kernel.h>
#ifndef __LYNXOS
#define __LYNXOS
#endif
#include <sys/itimer.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/proc.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sgtty.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <sys/fpp.h>
static char my_registers[REGISTER_BYTES];
char *registers = my_registers;
#include <sys/ptrace.h>
/* Start an inferior process and returns its pid.
ALLARGS is a vector of program-name and args. */
int
create_inferior (char *program, char **allargs)
{
int pid;
pid = fork ();
if (pid < 0)
perror_with_name ("fork");
if (pid == 0)
{
int pgrp;
/* Switch child to it's own process group so that signals won't
directly affect gdbserver. */
pgrp = getpid ();
setpgrp (0, pgrp);
ioctl (0, TIOCSPGRP, &pgrp);
ptrace (PTRACE_TRACEME, 0, (PTRACE_ARG3_TYPE) 0, 0);
execv (program, allargs);
fprintf (stderr, "GDBserver (process %d): Cannot exec %s: %s.\n",
getpid (), program,
errno < sys_nerr ? sys_errlist[errno] : "unknown error");
fflush (stderr);
_exit (0177);
}
return pid;
}
/* Attaching is not supported. */
int
myattach (int pid)
{
return -1;
}
/* Kill the inferior process. Make us have no inferior. */
void
kill_inferior (void)
{
if (inferior_pid == 0)
return;
ptrace (PTRACE_KILL, inferior_pid, 0, 0);
wait (0);
inferior_pid = 0;
}
/* Return nonzero if the given thread is still alive. */
int
mythread_alive (int pid)
{
/* Arggh. Apparently pthread_kill only works for threads within
the process that calls pthread_kill.
We want to avoid the lynx signal extensions as they simply don't
map well to the generic gdb interface we want to keep.
All we want to do is determine if a particular thread is alive;
it appears as if we can just make a harmless thread specific
ptrace call to do that. */
return (ptrace (PTRACE_THREADUSER,
BUILDPID (PIDGET (inferior_pid), pid), 0, 0) != -1);
}
/* Wait for process, returns status */
unsigned char
mywait (char *status)
{
int pid;
union wait w;
while (1)
{
enable_async_io ();
pid = wait (&w);
disable_async_io ();
if (pid != PIDGET (inferior_pid))
perror_with_name ("wait");
thread_from_wait = w.w_tid;
inferior_pid = BUILDPID (inferior_pid, w.w_tid);
if (WIFSTOPPED (w)
&& WSTOPSIG (w) == SIGTRAP)
{
int realsig;
realsig = ptrace (PTRACE_GETTRACESIG, inferior_pid,
(PTRACE_ARG3_TYPE) 0, 0);
if (realsig == SIGNEWTHREAD)
{
/* It's a new thread notification. Nothing to do here since
the machine independent code in wait_for_inferior will
add the thread to the thread list and restart the thread
when pid != inferior_pid and pid is not in the thread list.
We don't even want to muck with realsig -- the code in
wait_for_inferior expects SIGTRAP. */
;
}
}
break;
}
if (WIFEXITED (w))
{
*status = 'W';
return ((unsigned char) WEXITSTATUS (w));
}
else if (!WIFSTOPPED (w))
{
*status = 'X';
return ((unsigned char) WTERMSIG (w));
}
fetch_inferior_registers (0);
*status = 'T';
return ((unsigned char) WSTOPSIG (w));
}
/* Resume execution of the inferior process.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
void
myresume (int step, int signal)
{
errno = 0;
ptrace (step ? PTRACE_SINGLESTEP_ONE : PTRACE_CONT,
BUILDPID (inferior_pid, cont_thread == -1 ? 0 : cont_thread),
1, signal);
if (errno)
perror_with_name ("ptrace");
}
#undef offsetof
#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
/* Mapping between GDB register #s and offsets into econtext. Must be
consistent with REGISTER_NAMES macro in various tmXXX.h files. */
#define X(ENTRY)(offsetof(struct econtext, ENTRY))
#ifdef I386
/* Mappings from tm-i386v.h */
static int regmap[] =
{
X (eax),
X (ecx),
X (edx),
X (ebx),
X (esp), /* sp */
X (ebp), /* fp */
X (esi),
X (edi),
X (eip), /* pc */
X (flags), /* ps */
X (cs),
X (ss),
X (ds),
X (es),
X (ecode), /* Lynx doesn't give us either fs or gs, so */
X (fault), /* we just substitute these two in the hopes
that they are useful. */
};
#endif
#ifdef M68K
/* Mappings from tm-m68k.h */
static int regmap[] =
{
X (regs[0]), /* d0 */
X (regs[1]), /* d1 */
X (regs[2]), /* d2 */
X (regs[3]), /* d3 */
X (regs[4]), /* d4 */
X (regs[5]), /* d5 */
X (regs[6]), /* d6 */
X (regs[7]), /* d7 */
X (regs[8]), /* a0 */
X (regs[9]), /* a1 */
X (regs[10]), /* a2 */
X (regs[11]), /* a3 */
X (regs[12]), /* a4 */
X (regs[13]), /* a5 */
X (regs[14]), /* fp */
0, /* sp */
X (status), /* ps */
X (pc),
X (fregs[0 * 3]), /* fp0 */
X (fregs[1 * 3]), /* fp1 */
X (fregs[2 * 3]), /* fp2 */
X (fregs[3 * 3]), /* fp3 */
X (fregs[4 * 3]), /* fp4 */
X (fregs[5 * 3]), /* fp5 */
X (fregs[6 * 3]), /* fp6 */
X (fregs[7 * 3]), /* fp7 */
X (fcregs[0]), /* fpcontrol */
X (fcregs[1]), /* fpstatus */
X (fcregs[2]), /* fpiaddr */
X (ssw), /* fpcode */
X (fault), /* fpflags */
};
#endif
#ifdef SPARC
/* Mappings from tm-sparc.h */
#define FX(ENTRY)(offsetof(struct fcontext, ENTRY))
static int regmap[] =
{
-1, /* g0 */
X (g1),
X (g2),
X (g3),
X (g4),
-1, /* g5->g7 aren't saved by Lynx */
-1,
-1,
X (o[0]),
X (o[1]),
X (o[2]),
X (o[3]),
X (o[4]),
X (o[5]),
X (o[6]), /* sp */
X (o[7]), /* ra */
-1, -1, -1, -1, -1, -1, -1, -1, /* l0 -> l7 */
-1, -1, -1, -1, -1, -1, -1, -1, /* i0 -> i7 */
FX (f.fregs[0]), /* f0 */
FX (f.fregs[1]),
FX (f.fregs[2]),
FX (f.fregs[3]),
FX (f.fregs[4]),
FX (f.fregs[5]),
FX (f.fregs[6]),
FX (f.fregs[7]),
FX (f.fregs[8]),
FX (f.fregs[9]),
FX (f.fregs[10]),
FX (f.fregs[11]),
FX (f.fregs[12]),
FX (f.fregs[13]),
FX (f.fregs[14]),
FX (f.fregs[15]),
FX (f.fregs[16]),
FX (f.fregs[17]),
FX (f.fregs[18]),
FX (f.fregs[19]),
FX (f.fregs[20]),
FX (f.fregs[21]),
FX (f.fregs[22]),
FX (f.fregs[23]),
FX (f.fregs[24]),
FX (f.fregs[25]),
FX (f.fregs[26]),
FX (f.fregs[27]),
FX (f.fregs[28]),
FX (f.fregs[29]),
FX (f.fregs[30]),
FX (f.fregs[31]),
X (y),
X (psr),
X (wim),
X (tbr),
X (pc),
X (npc),
FX (fsr), /* fpsr */
-1, /* cpsr */
};
#endif
#ifdef SPARC
/* This routine handles some oddball cases for Sparc registers and LynxOS.
In partucular, it causes refs to G0, g5->7, and all fp regs to return zero.
It also handles knows where to find the I & L regs on the stack. */
void
fetch_inferior_registers (int regno)
{
#if 0
int whatregs = 0;
#define WHATREGS_FLOAT 1
#define WHATREGS_GEN 2
#define WHATREGS_STACK 4
if (regno == -1)
whatregs = WHATREGS_FLOAT | WHATREGS_GEN | WHATREGS_STACK;
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
whatregs = WHATREGS_STACK;
else if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 32)
whatregs = WHATREGS_FLOAT;
else
whatregs = WHATREGS_GEN;
if (whatregs & WHATREGS_GEN)
{
struct econtext ec; /* general regs */
char buf[MAX_REGISTER_RAW_SIZE];
int retval;
int i;
errno = 0;
retval = ptrace (PTRACE_GETREGS,
BUILDPID (inferior_pid, general_thread),
(PTRACE_ARG3_TYPE) & ec,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
memset (buf, 0, REGISTER_RAW_SIZE (G0_REGNUM));
supply_register (G0_REGNUM, buf);
supply_register (TBR_REGNUM, (char *) &ec.tbr);
memcpy (&registers[REGISTER_BYTE (G1_REGNUM)], &ec.g1,
4 * REGISTER_RAW_SIZE (G1_REGNUM));
for (i = G1_REGNUM; i <= G1_REGNUM + 3; i++)
register_valid[i] = 1;
supply_register (PS_REGNUM, (char *) &ec.psr);
supply_register (Y_REGNUM, (char *) &ec.y);
supply_register (PC_REGNUM, (char *) &ec.pc);
supply_register (NPC_REGNUM, (char *) &ec.npc);
supply_register (WIM_REGNUM, (char *) &ec.wim);
memcpy (&registers[REGISTER_BYTE (O0_REGNUM)], ec.o,
8 * REGISTER_RAW_SIZE (O0_REGNUM));
for (i = O0_REGNUM; i <= O0_REGNUM + 7; i++)
register_valid[i] = 1;
}
if (whatregs & WHATREGS_STACK)
{
CORE_ADDR sp;
int i;
sp = read_register (SP_REGNUM);
target_xfer_memory (sp + FRAME_SAVED_I0,
&registers[REGISTER_BYTE (I0_REGNUM)],
8 * REGISTER_RAW_SIZE (I0_REGNUM), 0);
for (i = I0_REGNUM; i <= I7_REGNUM; i++)
register_valid[i] = 1;
target_xfer_memory (sp + FRAME_SAVED_L0,
&registers[REGISTER_BYTE (L0_REGNUM)],
8 * REGISTER_RAW_SIZE (L0_REGNUM), 0);
for (i = L0_REGNUM; i <= L0_REGNUM + 7; i++)
register_valid[i] = 1;
}
if (whatregs & WHATREGS_FLOAT)
{
struct fcontext fc; /* fp regs */
int retval;
int i;
errno = 0;
retval = ptrace (PTRACE_GETFPREGS, BUILDPID (inferior_pid, general_thread), (PTRACE_ARG3_TYPE) & fc,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], fc.f.fregs,
32 * REGISTER_RAW_SIZE (FP0_REGNUM));
for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++)
register_valid[i] = 1;
supply_register (FPS_REGNUM, (char *) &fc.fsr);
}
#endif
}
/* This routine handles storing of the I & L regs for the Sparc. The trick
here is that they actually live on the stack. The really tricky part is
that when changing the stack pointer, the I & L regs must be written to
where the new SP points, otherwise the regs will be incorrect when the
process is started up again. We assume that the I & L regs are valid at
this point. */
void
store_inferior_registers (int regno)
{
#if 0
int whatregs = 0;
if (regno == -1)
whatregs = WHATREGS_FLOAT | WHATREGS_GEN | WHATREGS_STACK;
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
whatregs = WHATREGS_STACK;
else if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 32)
whatregs = WHATREGS_FLOAT;
else if (regno == SP_REGNUM)
whatregs = WHATREGS_STACK | WHATREGS_GEN;
else
whatregs = WHATREGS_GEN;
if (whatregs & WHATREGS_GEN)
{
struct econtext ec; /* general regs */
int retval;
ec.tbr = read_register (TBR_REGNUM);
memcpy (&ec.g1, &registers[REGISTER_BYTE (G1_REGNUM)],
4 * REGISTER_RAW_SIZE (G1_REGNUM));
ec.psr = read_register (PS_REGNUM);
ec.y = read_register (Y_REGNUM);
ec.pc = read_register (PC_REGNUM);
ec.npc = read_register (NPC_REGNUM);
ec.wim = read_register (WIM_REGNUM);
memcpy (ec.o, &registers[REGISTER_BYTE (O0_REGNUM)],
8 * REGISTER_RAW_SIZE (O0_REGNUM));
errno = 0;
retval = ptrace (PTRACE_SETREGS, BUILDPID (inferior_pid, general_thread), (PTRACE_ARG3_TYPE) & ec,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
}
if (whatregs & WHATREGS_STACK)
{
int regoffset;
CORE_ADDR sp;
sp = read_register (SP_REGNUM);
if (regno == -1 || regno == SP_REGNUM)
{
if (!register_valid[L0_REGNUM + 5])
abort ();
target_xfer_memory (sp + FRAME_SAVED_I0,
&registers[REGISTER_BYTE (I0_REGNUM)],
8 * REGISTER_RAW_SIZE (I0_REGNUM), 1);
target_xfer_memory (sp + FRAME_SAVED_L0,
&registers[REGISTER_BYTE (L0_REGNUM)],
8 * REGISTER_RAW_SIZE (L0_REGNUM), 1);
}
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
{
if (!register_valid[regno])
abort ();
if (regno >= L0_REGNUM && regno <= L0_REGNUM + 7)
regoffset = REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM)
+ FRAME_SAVED_L0;
else
regoffset = REGISTER_BYTE (regno) - REGISTER_BYTE (I0_REGNUM)
+ FRAME_SAVED_I0;
target_xfer_memory (sp + regoffset, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno), 1);
}
}
if (whatregs & WHATREGS_FLOAT)
{
struct fcontext fc; /* fp regs */
int retval;
/* We read fcontext first so that we can get good values for fq_t... */
errno = 0;
retval = ptrace (PTRACE_GETFPREGS, BUILDPID (inferior_pid, general_thread), (PTRACE_ARG3_TYPE) & fc,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
memcpy (fc.f.fregs, &registers[REGISTER_BYTE (FP0_REGNUM)],
32 * REGISTER_RAW_SIZE (FP0_REGNUM));
fc.fsr = read_register (FPS_REGNUM);
errno = 0;
retval = ptrace (PTRACE_SETFPREGS, BUILDPID (inferior_pid, general_thread), (PTRACE_ARG3_TYPE) & fc,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
}
#endif
}
#endif /* SPARC */
#ifndef SPARC
/* Return the offset relative to the start of the per-thread data to the
saved context block. */
static unsigned long
lynx_registers_addr (void)
{
CORE_ADDR stblock;
int ecpoff = offsetof (st_t, ecp);
CORE_ADDR ecp;
errno = 0;
stblock = (CORE_ADDR) ptrace (PTRACE_THREADUSER, BUILDPID (inferior_pid, general_thread),
(PTRACE_ARG3_TYPE) 0, 0);
if (errno)
perror_with_name ("PTRACE_THREADUSER");
ecp = (CORE_ADDR) ptrace (PTRACE_PEEKTHREAD, BUILDPID (inferior_pid, general_thread),
(PTRACE_ARG3_TYPE) ecpoff, 0);
if (errno)
perror_with_name ("lynx_registers_addr(PTRACE_PEEKTHREAD)");
return ecp - stblock;
}
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (int ignored)
{
int regno;
unsigned long reg;
unsigned long ecp;
ecp = lynx_registers_addr ();
for (regno = 0; regno < NUM_REGS; regno++)
{
int ptrace_fun = PTRACE_PEEKTHREAD;
#ifdef PTRACE_PEEKUSP
ptrace_fun = regno == SP_REGNUM ? PTRACE_PEEKUSP : PTRACE_PEEKTHREAD;
#endif
errno = 0;
reg = ptrace (ptrace_fun, BUILDPID (inferior_pid, general_thread),
(PTRACE_ARG3_TYPE) (ecp + regmap[regno]), 0);
if (errno)
perror_with_name ("fetch_inferior_registers(PTRACE_PEEKTHREAD)");
*(unsigned long *) &registers[REGISTER_BYTE (regno)] = reg;
}
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int ignored)
{
int regno;
unsigned long reg;
unsigned long ecp;
ecp = lynx_registers_addr ();
for (regno = 0; regno < NUM_REGS; regno++)
{
int ptrace_fun = PTRACE_POKEUSER;
#ifdef PTRACE_POKEUSP
ptrace_fun = regno == SP_REGNUM ? PTRACE_POKEUSP : PTRACE_POKEUSER;
#endif
reg = *(unsigned long *) &registers[REGISTER_BYTE (regno)];
errno = 0;
ptrace (ptrace_fun, BUILDPID (inferior_pid, general_thread),
(PTRACE_ARG3_TYPE) (ecp + regmap[regno]), reg);
if (errno)
perror_with_name ("PTRACE_POKEUSER");
}
}
#endif /* ! SPARC */
/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
in the NEW_SUN_PTRACE case.
It ought to be straightforward. But it appears that writing did
not write the data that I specified. I cannot understand where
it got the data that it actually did write. */
/* Copy LEN bytes from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. */
void
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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));
/* Read all the longwords */
for (i = 0; i < count; i++, addr += sizeof (int))
{
buffer[i] = ptrace (PTRACE_PEEKTEXT, BUILDPID (inferior_pid, general_thread), addr, 0);
}
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
/* 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 (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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. */
buffer[0] = ptrace (PTRACE_PEEKTEXT, BUILDPID (inferior_pid, general_thread), addr, 0);
if (count > 1)
{
buffer[count - 1]
= ptrace (PTRACE_PEEKTEXT, BUILDPID (inferior_pid, general_thread),
addr + (count - 1) * sizeof (int), 0);
}
/* Copy data to be written over corresponding part of buffer */
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
/* Write the entire buffer. */
for (i = 0; i < count; i++, addr += sizeof (int))
{
while (1)
{
errno = 0;
ptrace (PTRACE_POKETEXT, BUILDPID (inferior_pid, general_thread), addr, buffer[i]);
if (errno)
{
fprintf (stderr, "\
ptrace (PTRACE_POKETEXT): errno=%d, pid=0x%x, addr=0x%x, buffer[i] = 0x%x\n",
errno, BUILDPID (inferior_pid, general_thread),
addr, buffer[i]);
fprintf (stderr, "Sleeping for 1 second\n");
sleep (1);
}
else
break;
}
}
return 0;
}
void
initialize_low (void)
{
}

599
gdb/gdbserver/low-nbsd.c
View File

@ -1,599 +0,0 @@
/* Low level interface to ptrace, for the remote server for GDB.
Copyright 1986, 1987, 1993, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "server.h"
#include <sys/types.h>
#include <sys/wait.h>
#include "frame.h"
#include "inferior.h"
#include <stdio.h>
#include <errno.h>
/***************Begin MY defs*********************/
static char my_registers[REGISTER_BYTES];
char *registers = my_registers;
/***************End MY defs*********************/
#include <sys/ptrace.h>
#include <machine/reg.h>
#define RF(dst, src) \
memcpy(&registers[REGISTER_BYTE(dst)], &src, sizeof(src))
#define RS(src, dst) \
memcpy(&dst, &registers[REGISTER_BYTE(src)], sizeof(dst))
#ifdef __i386__
struct env387
{
unsigned short control;
unsigned short r0;
unsigned short status;
unsigned short r1;
unsigned short tag;
unsigned short r2;
unsigned long eip;
unsigned short code_seg;
unsigned short opcode;
unsigned long operand;
unsigned short operand_seg;
unsigned short r3;
unsigned char regs[8][10];
};
/* i386_register_raw_size[i] is the number of bytes of storage in the
actual machine representation for register i. */
int i386_register_raw_size[MAX_NUM_REGS] = {
4, 4, 4, 4,
4, 4, 4, 4,
4, 4, 4, 4,
4, 4, 4, 4,
10, 10, 10, 10,
10, 10, 10, 10,
4, 4, 4, 4,
4, 4, 4, 4,
16, 16, 16, 16,
16, 16, 16, 16,
4
};
int i386_register_byte[MAX_NUM_REGS];
static void
initialize_arch (void)
{
/* Initialize the table saying where each register starts in the
register file. */
{
int i, offset;
offset = 0;
for (i = 0; i < MAX_NUM_REGS; i++)
{
i386_register_byte[i] = offset;
offset += i386_register_raw_size[i];
}
}
}
#endif /* !__i386__ */
#ifdef __m68k__
static void
initialize_arch (void)
{
}
#endif /* !__m68k__ */
#ifdef __ns32k__
static void
initialize_arch (void)
{
}
#endif /* !__ns32k__ */
#ifdef __powerpc__
#include "ppc-tdep.h"
static void
initialize_arch (void)
{
}
#endif /* !__powerpc__ */
/* Start an inferior process and returns its pid.
ALLARGS is a vector of program-name and args. */
int
create_inferior (char *program, char **allargs)
{
int pid;
pid = fork ();
if (pid < 0)
perror_with_name ("fork");
if (pid == 0)
{
ptrace (PT_TRACE_ME, 0, 0, 0);
execv (program, allargs);
fprintf (stderr, "Cannot exec %s: %s.\n", program,
errno < sys_nerr ? sys_errlist[errno] : "unknown error");
fflush (stderr);
_exit (0177);
}
return pid;
}
/* Attaching is not supported. */
int
myattach (int pid)
{
return -1;
}
/* Kill the inferior process. Make us have no inferior. */
void
kill_inferior (void)
{
if (inferior_pid == 0)
return;
ptrace (PT_KILL, inferior_pid, 0, 0);
wait (0);
/*************inferior_died ();****VK**************/
}
/* Return nonzero if the given thread is still alive. */
int
mythread_alive (int pid)
{
return 1;
}
/* Wait for process, returns status */
unsigned char
mywait (char *status)
{
int pid;
int w;
enable_async_io ();
pid = waitpid (inferior_pid, &w, 0);
disable_async_io ();
if (pid != inferior_pid)
perror_with_name ("wait");
if (WIFEXITED (w))
{
fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
*status = 'W';
return ((unsigned char) WEXITSTATUS (w));
}
else if (!WIFSTOPPED (w))
{
fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
*status = 'X';
return ((unsigned char) WTERMSIG (w));
}
fetch_inferior_registers (0);
*status = 'T';
return ((unsigned char) WSTOPSIG (w));
}
/* Resume execution of the inferior process.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
void
myresume (int step, int signal)
{
errno = 0;
ptrace (step ? PT_STEP : PT_CONTINUE, inferior_pid,
(PTRACE_ARG3_TYPE) 1, signal);
if (errno)
perror_with_name ("ptrace");
}
#ifdef __i386__
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (int ignored)
{
struct reg inferior_registers;
struct env387 inferior_fp_registers;
ptrace (PT_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_registers, 0);
ptrace (PT_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_fp_registers, 0);
RF ( 0, inferior_registers.r_eax);
RF ( 1, inferior_registers.r_ecx);
RF ( 2, inferior_registers.r_edx);
RF ( 3, inferior_registers.r_ebx);
RF ( 4, inferior_registers.r_esp);
RF ( 5, inferior_registers.r_ebp);
RF ( 6, inferior_registers.r_esi);
RF ( 7, inferior_registers.r_edi);
RF ( 8, inferior_registers.r_eip);
RF ( 9, inferior_registers.r_eflags);
RF (10, inferior_registers.r_cs);
RF (11, inferior_registers.r_ss);
RF (12, inferior_registers.r_ds);
RF (13, inferior_registers.r_es);
RF (14, inferior_registers.r_fs);
RF (15, inferior_registers.r_gs);
RF (FP0_REGNUM, inferior_fp_registers.regs[0]);
RF (FP0_REGNUM + 1, inferior_fp_registers.regs[1]);
RF (FP0_REGNUM + 2, inferior_fp_registers.regs[2]);
RF (FP0_REGNUM + 3, inferior_fp_registers.regs[3]);
RF (FP0_REGNUM + 4, inferior_fp_registers.regs[4]);
RF (FP0_REGNUM + 5, inferior_fp_registers.regs[5]);
RF (FP0_REGNUM + 6, inferior_fp_registers.regs[6]);
RF (FP0_REGNUM + 7, inferior_fp_registers.regs[7]);
RF (FCTRL_REGNUM, inferior_fp_registers.control);
RF (FSTAT_REGNUM, inferior_fp_registers.status);
RF (FTAG_REGNUM, inferior_fp_registers.tag);
RF (FCS_REGNUM, inferior_fp_registers.code_seg);
RF (FCOFF_REGNUM, inferior_fp_registers.eip);
RF (FDS_REGNUM, inferior_fp_registers.operand_seg);
RF (FDOFF_REGNUM, inferior_fp_registers.operand);
RF (FOP_REGNUM, inferior_fp_registers.opcode);
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int ignored)
{
struct reg inferior_registers;
struct env387 inferior_fp_registers;
RS ( 0, inferior_registers.r_eax);
RS ( 1, inferior_registers.r_ecx);
RS ( 2, inferior_registers.r_edx);
RS ( 3, inferior_registers.r_ebx);
RS ( 4, inferior_registers.r_esp);
RS ( 5, inferior_registers.r_ebp);
RS ( 6, inferior_registers.r_esi);
RS ( 7, inferior_registers.r_edi);
RS ( 8, inferior_registers.r_eip);
RS ( 9, inferior_registers.r_eflags);
RS (10, inferior_registers.r_cs);
RS (11, inferior_registers.r_ss);
RS (12, inferior_registers.r_ds);
RS (13, inferior_registers.r_es);
RS (14, inferior_registers.r_fs);
RS (15, inferior_registers.r_gs);
RS (FP0_REGNUM, inferior_fp_registers.regs[0]);
RS (FP0_REGNUM + 1, inferior_fp_registers.regs[1]);
RS (FP0_REGNUM + 2, inferior_fp_registers.regs[2]);
RS (FP0_REGNUM + 3, inferior_fp_registers.regs[3]);
RS (FP0_REGNUM + 4, inferior_fp_registers.regs[4]);
RS (FP0_REGNUM + 5, inferior_fp_registers.regs[5]);
RS (FP0_REGNUM + 6, inferior_fp_registers.regs[6]);
RS (FP0_REGNUM + 7, inferior_fp_registers.regs[7]);
RS (FCTRL_REGNUM, inferior_fp_registers.control);
RS (FSTAT_REGNUM, inferior_fp_registers.status);
RS (FTAG_REGNUM, inferior_fp_registers.tag);
RS (FCS_REGNUM, inferior_fp_registers.code_seg);
RS (FCOFF_REGNUM, inferior_fp_registers.eip);
RS (FDS_REGNUM, inferior_fp_registers.operand_seg);
RS (FDOFF_REGNUM, inferior_fp_registers.operand);
RS (FOP_REGNUM, inferior_fp_registers.opcode);
ptrace (PT_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_registers, 0);
ptrace (PT_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_fp_registers, 0);
}
#endif /* !__i386__ */
#ifdef __m68k__
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (int regno)
{
struct reg inferior_registers;
struct fpreg inferior_fp_registers;
ptrace (PT_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
memcpy (&registers[REGISTER_BYTE (0)], &inferior_registers,
sizeof (inferior_registers));
ptrace (PT_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
sizeof (inferior_fp_registers));
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int regno)
{
struct reg inferior_registers;
struct fpreg inferior_fp_registers;
memcpy (&inferior_registers, &registers[REGISTER_BYTE (0)],
sizeof (inferior_registers));
ptrace (PT_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
memcpy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
sizeof (inferior_fp_registers));
ptrace (PT_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
}
#endif /* !__m68k__ */
#ifdef __ns32k__
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (int regno)
{
struct reg inferior_registers;
struct fpreg inferior_fpregisters;
ptrace (PT_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
ptrace (PT_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fpregisters, 0);
RF (R0_REGNUM + 0, inferior_registers.r_r0);
RF (R0_REGNUM + 1, inferior_registers.r_r1);
RF (R0_REGNUM + 2, inferior_registers.r_r2);
RF (R0_REGNUM + 3, inferior_registers.r_r3);
RF (R0_REGNUM + 4, inferior_registers.r_r4);
RF (R0_REGNUM + 5, inferior_registers.r_r5);
RF (R0_REGNUM + 6, inferior_registers.r_r6);
RF (R0_REGNUM + 7, inferior_registers.r_r7);
RF (SP_REGNUM, inferior_registers.r_sp);
RF (DEPRECATED_FP_REGNUM, inferior_registers.r_fp);
RF (PC_REGNUM, inferior_registers.r_pc);
RF (PS_REGNUM, inferior_registers.r_psr);
RF (FPS_REGNUM, inferior_fpregisters.r_fsr);
RF (FP0_REGNUM + 0, inferior_fpregisters.r_freg[0]);
RF (FP0_REGNUM + 2, inferior_fpregisters.r_freg[2]);
RF (FP0_REGNUM + 4, inferior_fpregisters.r_freg[4]);
RF (FP0_REGNUM + 6, inferior_fpregisters.r_freg[6]);
RF (LP0_REGNUM + 1, inferior_fpregisters.r_freg[1]);
RF (LP0_REGNUM + 3, inferior_fpregisters.r_freg[3]);
RF (LP0_REGNUM + 5, inferior_fpregisters.r_freg[5]);
RF (LP0_REGNUM + 7, inferior_fpregisters.r_freg[7]);
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int regno)
{
struct reg inferior_registers;
struct fpreg inferior_fpregisters;
RS (R0_REGNUM + 0, inferior_registers.r_r0);
RS (R0_REGNUM + 1, inferior_registers.r_r1);
RS (R0_REGNUM + 2, inferior_registers.r_r2);
RS (R0_REGNUM + 3, inferior_registers.r_r3);
RS (R0_REGNUM + 4, inferior_registers.r_r4);
RS (R0_REGNUM + 5, inferior_registers.r_r5);
RS (R0_REGNUM + 6, inferior_registers.r_r6);
RS (R0_REGNUM + 7, inferior_registers.r_r7);
RS (SP_REGNUM, inferior_registers.r_sp);
RS (DEPRECATED_FP_REGNUM, inferior_registers.r_fp);
RS (PC_REGNUM, inferior_registers.r_pc);
RS (PS_REGNUM, inferior_registers.r_psr);
RS (FPS_REGNUM, inferior_fpregisters.r_fsr);
RS (FP0_REGNUM + 0, inferior_fpregisters.r_freg[0]);
RS (FP0_REGNUM + 2, inferior_fpregisters.r_freg[2]);
RS (FP0_REGNUM + 4, inferior_fpregisters.r_freg[4]);
RS (FP0_REGNUM + 6, inferior_fpregisters.r_freg[6]);
RS (LP0_REGNUM + 1, inferior_fpregisters.r_freg[1]);
RS (LP0_REGNUM + 3, inferior_fpregisters.r_freg[3]);
RS (LP0_REGNUM + 5, inferior_fpregisters.r_freg[5]);
RS (LP0_REGNUM + 7, inferior_fpregisters.r_freg[7]);
ptrace (PT_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
ptrace (PT_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fpregisters, 0);
}
#endif /* !__ns32k__ */
#ifdef __powerpc__
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (int regno)
{
struct reg inferior_registers;
#ifdef PT_GETFPREGS
struct fpreg inferior_fp_registers;
#endif
int i;
ptrace (PT_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
for (i = 0; i < 32; i++)
RF (i, inferior_registers.fixreg[i]);
RF (PPC_LR_REGNUM, inferior_registers.lr);
RF (PPC_CR_REGNUM, inferior_registers.cr);
RF (PPC_XER_REGNUM, inferior_registers.xer);
RF (PPC_CTR_REGNUM, inferior_registers.ctr);
RF (PC_REGNUM, inferior_registers.pc);
#ifdef PT_GETFPREGS
ptrace (PT_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
for (i = 0; i < 32; i++)
RF (FP0_REGNUM + i, inferior_fp_registers.r_regs[i]);
#endif
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int regno)
{
struct reg inferior_registers;
#ifdef PT_SETFPREGS
struct fpreg inferior_fp_registers;
#endif
int i;
for (i = 0; i < 32; i++)
RS (i, inferior_registers.fixreg[i]);
RS (PPC_LR_REGNUM, inferior_registers.lr);
RS (PPC_CR_REGNUM, inferior_registers.cr);
RS (PPC_XER_REGNUM, inferior_registers.xer);
RS (PPC_CTR_REGNUM, inferior_registers.ctr);
RS (PC_REGNUM, inferior_registers.pc);
ptrace (PT_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0);
#ifdef PT_SETFPREGS
for (i = 0; i < 32; i++)
RS (FP0_REGNUM + i, inferior_fp_registers.r_regs[i]);
ptrace (PT_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
#endif
}
#endif /* !__powerpc__ */
/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
in the NEW_SUN_PTRACE case.
It ought to be straightforward. But it appears that writing did
not write the data that I specified. I cannot understand where
it got the data that it actually did write. */
/* Copy LEN bytes from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. */
void
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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));
/* Read all the longwords */
for (i = 0; i < count; i++, addr += sizeof (int))
{
buffer[i] = ptrace (PT_READ_D, inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
}
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
/* 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 (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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. */
buffer[0] = ptrace (PT_READ_D, inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
if (count > 1)
{
buffer[count - 1]
= ptrace (PT_READ_D, inferior_pid,
(PTRACE_ARG3_TYPE) addr + (count - 1) * sizeof (int), 0);
}
/* Copy data to be written over corresponding part of buffer */
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
/* Write the entire buffer. */
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
ptrace (PT_WRITE_D, inferior_pid, (PTRACE_ARG3_TYPE) addr, buffer[i]);
if (errno)
return errno;
}
return 0;
}
void
initialize_low (void)
{
initialize_arch ();
}

269
gdb/gdbserver/low-sim.c
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@ -1,269 +0,0 @@
/* Low level interface to simulators, for the remote server for GDB.
Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "server.h"
#include "bfd.h"
#include "callback.h" /* GDB simulator callback interface */
#include "remote-sim.h" /* GDB simulator interface */
extern int remote_debug;
extern host_callback default_callback; /* in sim/common/callback.c */
static char my_registers[REGISTER_BYTES] __attribute__ ((aligned));
char * registers = my_registers;
int target_byte_order; /* used by simulator */
/* We record the result of sim_open so we can pass it
back to the other sim_foo routines. */
static SIM_DESC gdbsim_desc = 0;
/* This version of "load" should be usable for any simulator that
does not support loading itself. */
static void
mygeneric_load (bfd *loadfile_bfd)
{
asection *s;
for (s = loadfile_bfd->sections; s; s = s->next)
{
if (s->flags & SEC_LOAD)
{
bfd_size_type size;
size = bfd_get_section_size_before_reloc (s);
if (size > 0)
{
char *buffer;
bfd_vma lma; /* use load address, not virtual address */
buffer = xmalloc (size);
lma = s->lma;
/* Is this really necessary? I guess it gives the user something
to look at during a long download. */
printf ("Loading section %s, size 0x%lx lma 0x%lx\n",
bfd_get_section_name (loadfile_bfd, s),
(unsigned long) size,
(unsigned long) lma); /* chops high 32 bits. FIXME!! */
bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size);
write_inferior_memory (lma, buffer, size);
free (buffer);
}
}
}
printf ("Start address 0x%lx\n",
(unsigned long) loadfile_bfd->start_address);
/* We were doing this in remote-mips.c, I suspect it is right
for other targets too. */
/* write_pc (loadfile_bfd->start_address); *//* FIXME!! */
}
int
create_inferior (char *program, char **argv)
{
bfd *abfd;
int pid = 0;
char **new_argv;
int nargs;
abfd = bfd_openr (program, 0);
if (!abfd)
{
fprintf (stderr, "gdbserver: can't open %s: %s\n",
program, bfd_errmsg (bfd_get_error ()));
exit (1);
}
if (!bfd_check_format (abfd, bfd_object))
{
fprintf (stderr, "gdbserver: unknown load format for %s: %s\n",
program, bfd_errmsg (bfd_get_error ()));
exit (1);
}
/* Add "-E big" or "-E little" to the argument list depending on the
endianness of the program to be loaded. */
for (nargs = 0; argv[nargs] != NULL; nargs++) /* count the args */
;
new_argv = alloca (sizeof (char *) * (nargs + 3)); /* allocate new args */
for (nargs = 0; argv[nargs] != NULL; nargs++) /* copy old to new */
new_argv[nargs] = argv[nargs];
new_argv[nargs] = "-E";
new_argv[nargs + 1] = bfd_big_endian (abfd) ? "big" : "little";
new_argv[nargs + 2] = NULL;
argv = new_argv;
/* Create an instance of the simulator. */
default_callback.init (&default_callback);
gdbsim_desc = sim_open (SIM_OPEN_STANDALONE, &default_callback, abfd, argv);
if (gdbsim_desc == 0)
exit (1);
/* Load the program into the simulator. */
if (abfd)
if (sim_load (gdbsim_desc, program, NULL, 0) == SIM_RC_FAIL)
mygeneric_load (abfd);
/* Create an inferior process in the simulator. This initializes SP. */
sim_create_inferior (gdbsim_desc, abfd, argv, /* env */ NULL);
sim_resume (gdbsim_desc, 1, 0); /* execute one instr */
return pid;
}
/* Attaching is not supported. */
int
myattach (int pid)
{
return -1;
}
/* Kill the inferior process. Make us have no inferior. */
void
kill_inferior (void)
{
sim_close (gdbsim_desc, 0);
default_callback.shutdown (&default_callback);
}
/* Fetch one register. */
static void
fetch_register (int regno)
{
sim_fetch_register (gdbsim_desc, regno, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
}
/* Fetch all registers, or just one, from the child process. */
void
fetch_inferior_registers (int regno)
{
if (regno == -1 || regno == 0)
for (regno = 0; regno < NUM_REGS /*-NUM_FREGS*/ ; regno++)
fetch_register (regno);
else
fetch_register (regno);
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int regno)
{
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
store_inferior_registers (regno);
}
else
sim_store_register (gdbsim_desc, regno, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
}
/* Return nonzero if the given thread is still alive. */
int
mythread_alive (int pid)
{
return 1;
}
/* Wait for process, returns status */
unsigned char
mywait (char *status)
{
int sigrc;
enum sim_stop reason;
sim_stop_reason (gdbsim_desc, &reason, &sigrc);
switch (reason)
{
case sim_exited:
if (remote_debug)
printf ("\nChild exited with retcode = %x \n", sigrc);
*status = 'W';
return sigrc;
#if 0
case sim_stopped:
if (remote_debug)
printf ("\nChild terminated with signal = %x \n", sigrc);
*status = 'X';
return sigrc;
#endif
default: /* should this be sim_signalled or sim_stopped? FIXME!! */
if (remote_debug)
printf ("\nChild received signal = %x \n", sigrc);
fetch_inferior_registers (0);
*status = 'T';
return (unsigned char) sigrc;
}
}
/* Resume execution of the inferior process.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
void
myresume (int step, int signo)
{
/* Should be using target_signal_to_host() or signal numbers in target.h
to convert GDB signal number to target signal number. */
sim_resume (gdbsim_desc, step, signo);
}
/* Copy LEN bytes from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. */
void
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
sim_read (gdbsim_desc, memaddr, myaddr, len);
}
/* 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 (CORE_ADDR memaddr, char *myaddr, int len)
{
sim_write (gdbsim_desc, memaddr, myaddr, len); /* should check for error. FIXME!! */
return 0;
}
void
initialize_low (void)
{
}

314
gdb/gdbserver/low-sparc.c
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@ -1,314 +0,0 @@
/* Low level interface to ptrace, for the remote server for GDB.
Copyright 1986, 1987, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "server.h"
#include <sys/wait.h>
#include "frame.h"
#include "inferior.h"
/***************************
#include "initialize.h"
****************************/
#include <stdio.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <sys/user.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sgtty.h>
#include <fcntl.h>
/***************Begin MY defs*********************/
static char my_registers[REGISTER_BYTES];
char *registers = my_registers;
/***************End MY defs*********************/
#include <sys/ptrace.h>
#include <sys/reg.h>
extern int sys_nerr;
extern char **sys_errlist;
extern int errno;
/* Start an inferior process and returns its pid.
ALLARGS is a vector of program-name and args. */
int
create_inferior (char *program, char **allargs)
{
int pid;
pid = fork ();
if (pid < 0)
perror_with_name ("fork");
if (pid == 0)
{
ptrace (PTRACE_TRACEME);
execv (program, allargs);
fprintf (stderr, "Cannot exec %s: %s.\n", program,
errno < sys_nerr ? sys_errlist[errno] : "unknown error");
fflush (stderr);
_exit (0177);
}
return pid;
}
/* Attaching is not supported. */
int
myattach (int pid)
{
return -1;
}
/* Kill the inferior process. Make us have no inferior. */
void
kill_inferior (void)
{
if (inferior_pid == 0)
return;
ptrace (8, inferior_pid, 0, 0);
wait (0);
/*************inferior_died ();****VK**************/
}
/* Return nonzero if the given thread is still alive. */
int
mythread_alive (int pid)
{
return 1;
}
/* Wait for process, returns status */
unsigned char
mywait (char *status)
{
int pid;
union wait w;
enable_async_io ();
pid = waitpid (inferior_pid, &w, 0);
disable_async_io ();
if (pid != inferior_pid)
perror_with_name ("wait");
if (WIFEXITED (w))
{
fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
*status = 'W';
return ((unsigned char) WEXITSTATUS (w));
}
else if (!WIFSTOPPED (w))
{
fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
*status = 'X';
return ((unsigned char) WTERMSIG (w));
}
fetch_inferior_registers (0);
*status = 'T';
return ((unsigned char) WSTOPSIG (w));
}
/* Resume execution of the inferior process.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
void
myresume (int step, int signal)
{
errno = 0;
ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, inferior_pid, 1, signal);
if (errno)
perror_with_name ("ptrace");
}
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (int ignored)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
int i;
/* Global and Out regs are fetched directly, as well as the control
registers. If we're getting one of the in or local regs,
and the stack pointer has not yet been fetched,
we have to do that first, since they're found in memory relative
to the stack pointer. */
if (ptrace (PTRACE_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0))
perror ("ptrace_getregs");
registers[REGISTER_BYTE (0)] = 0;
memcpy (&registers[REGISTER_BYTE (1)], &inferior_registers.r_g1,
15 * REGISTER_RAW_SIZE (G0_REGNUM));
*(int *) &registers[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
*(int *) &registers[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
*(int *) &registers[REGISTER_BYTE (NPC_REGNUM)] = inferior_registers.r_npc;
*(int *) &registers[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y;
/* Floating point registers */
if (ptrace (PTRACE_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers,
0))
perror ("ptrace_getfpregs");
memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
sizeof inferior_fp_registers.fpu_fr);
/* These regs are saved on the stack by the kernel. Only read them
all (16 ptrace calls!) if we really need them. */
read_inferior_memory (*(CORE_ADDR *) & registers[REGISTER_BYTE (SP_REGNUM)],
&registers[REGISTER_BYTE (L0_REGNUM)],
16 * REGISTER_RAW_SIZE (L0_REGNUM));
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int ignored)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
CORE_ADDR sp = *(CORE_ADDR *) & registers[REGISTER_BYTE (SP_REGNUM)];
write_inferior_memory (sp, &registers[REGISTER_BYTE (L0_REGNUM)],
16 * REGISTER_RAW_SIZE (L0_REGNUM));
memcpy (&inferior_registers.r_g1, &registers[REGISTER_BYTE (G1_REGNUM)],
15 * REGISTER_RAW_SIZE (G1_REGNUM));
inferior_registers.r_ps =
*(int *) &registers[REGISTER_BYTE (PS_REGNUM)];
inferior_registers.r_pc =
*(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
inferior_registers.r_npc =
*(int *) &registers[REGISTER_BYTE (NPC_REGNUM)];
inferior_registers.r_y =
*(int *) &registers[REGISTER_BYTE (Y_REGNUM)];
if (ptrace (PTRACE_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0))
perror ("ptrace_setregs");
memcpy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
sizeof inferior_fp_registers.fpu_fr);
if (ptrace (PTRACE_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0))
perror ("ptrace_setfpregs");
}
/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
in the NEW_SUN_PTRACE case.
It ought to be straightforward. But it appears that writing did
not write the data that I specified. I cannot understand where
it got the data that it actually did write. */
/* Copy LEN bytes from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. */
void
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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));
/* Read all the longwords */
for (i = 0; i < count; i++, addr += sizeof (int))
{
buffer[i] = ptrace (1, inferior_pid, addr, 0);
}
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
/* 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 (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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. */
buffer[0] = ptrace (1, inferior_pid, addr, 0);
if (count > 1)
{
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;
ptrace (4, inferior_pid, addr, buffer[i]);
if (errno)
return errno;
}
return 0;
}
void
initialize_low (void)
{
}

291
gdb/gdbserver/low-sun3.c
View File

@ -1,291 +0,0 @@
/* Low level interface to ptrace, for the remote server for GDB.
Copyright 1986, 1987, 1993, 1994, 1995, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "server.h"
#include "<sys/wait.h>"
#include "frame.h"
#include "inferior.h"
#include <stdio.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <sys/user.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sgtty.h>
#include <fcntl.h>
/***************Begin MY defs*********************/
static char my_registers[REGISTER_BYTES];
char *registers = my_registers;
/***************End MY defs*********************/
#include <sys/ptrace.h>
#include <machine/reg.h>
extern int sys_nerr;
extern char **sys_errlist;
extern int errno;
/* Start an inferior process and returns its pid.
ALLARGS is a vector of program-name and args. */
int
create_inferior (char *program, char **allargs)
{
int pid;
pid = fork ();
if (pid < 0)
perror_with_name ("fork");
if (pid == 0)
{
ptrace (PTRACE_TRACEME);
execv (program, allargs);
fprintf (stderr, "Cannot exec %s: %s.\n", program,
errno < sys_nerr ? sys_errlist[errno] : "unknown error");
fflush (stderr);
_exit (0177);
}
return pid;
}
/* Attaching is not supported. */
int
myattach (int pid)
{
return -1;
}
/* Kill the inferior process. Make us have no inferior. */
void
kill_inferior (void)
{
if (inferior_pid == 0)
return;
ptrace (8, inferior_pid, 0, 0);
wait (0);
/*************inferior_died ();****VK**************/
}
/* Return nonzero if the given thread is still alive. */
int
mythread_alive (int pid)
{
return 1;
}
/* Wait for process, returns status */
unsigned char
mywait (char *status)
{
int pid;
union wait w;
pid = wait (&w);
if (pid != inferior_pid)
perror_with_name ("wait");
if (WIFEXITED (w))
{
fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w));
*status = 'W';
return ((unsigned char) WEXITSTATUS (w));
}
else if (!WIFSTOPPED (w))
{
fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w));
*status = 'X';
return ((unsigned char) WTERMSIG (w));
}
fetch_inferior_registers (0);
*status = 'T';
return ((unsigned char) WSTOPSIG (w));
}
/* Resume execution of the inferior process.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
void
myresume (int step, int signal)
{
errno = 0;
ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, inferior_pid, 1, signal);
if (errno)
perror_with_name ("ptrace");
}
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (int ignored)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
ptrace (PTRACE_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers);
#ifdef FP0_REGNUM
ptrace (PTRACE_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers);
#endif
memcpy (registers, &inferior_registers, 16 * 4);
#ifdef FP0_REGNUM
memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
sizeof inferior_fp_registers.fps_regs);
#endif
*(int *) &registers[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
*(int *) &registers[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
#ifdef FP0_REGNUM
memcpy
(&registers[REGISTER_BYTE (FPC_REGNUM)],
&inferior_fp_registers.fps_control,
sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
#endif
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int ignored)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
memcpy (&inferior_registers, registers, 16 * 4);
#ifdef FP0_REGNUM
memcpy (&inferior_fp_registers,
&registers[REGISTER_BYTE (FP0_REGNUM)],
sizeof inferior_fp_registers.fps_regs);
#endif
inferior_registers.r_ps = *(int *) &registers[REGISTER_BYTE (PS_REGNUM)];
inferior_registers.r_pc = *(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
#ifdef FP0_REGNUM
memcpy (&inferior_fp_registers.fps_control,
&registers[REGISTER_BYTE (FPC_REGNUM)],
(sizeof inferior_fp_registers
- sizeof inferior_fp_registers.fps_regs));
#endif
ptrace (PTRACE_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers);
#if FP0_REGNUM
ptrace (PTRACE_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers);
#endif
}
/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
in the NEW_SUN_PTRACE case.
It ought to be straightforward. But it appears that writing did
not write the data that I specified. I cannot understand where
it got the data that it actually did write. */
/* Copy LEN bytes from inferior's memory starting at MEMADDR
to debugger memory starting at MYADDR. */
void
read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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));
/* Read all the longwords */
for (i = 0; i < count; i++, addr += sizeof (int))
{
buffer[i] = ptrace (1, inferior_pid, addr, 0);
}
/* Copy appropriate bytes out of the buffer. */
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
}
/* 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 (CORE_ADDR memaddr, char *myaddr, int len)
{
register int i;
/* Round starting address down to longword boundary. */
register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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. */
buffer[0] = ptrace (1, inferior_pid, addr, 0);
if (count > 1)
{
buffer[count - 1]
= ptrace (1, inferior_pid,
addr + (count - 1) * sizeof (int), 0);
}
/* Copy data to be written over corresponding part of buffer */
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
/* Write the entire buffer. */
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
ptrace (4, inferior_pid, addr, buffer[i]);
if (errno)
return errno;
}
return 0;
}
void
initialize_low (void)
{
}