Initial creation of sourceware repository

1 files changed, 0 insertions, 451 deletions

diff --git a/gdb/gdbserver/low-linux.c b/gdb/gdbserver/low-linux.c
deleted file mode 100644
index 1060210..0000000
--- a/gdb/gdbserver/low-linux.c
+++ /dev/null
@@ -1,451 +0,0 @@
-/* Low level interface to ptrace, for the remote server for GDB.
-   Copyright (C) 1995, 1996 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 "defs.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>
-#if 0
-#include <sgtty.h>
-#endif
-#include <fcntl.h>
-
-/***************Begin MY defs*********************/
-int quit_flag = 0;
-char registers[REGISTER_BYTES];
-
-/* Index within `registers' of the first byte of the space for
-   register N.  */
-
-
-char buf2[MAX_REGISTER_RAW_SIZE];
-/***************End MY defs*********************/
-
-#include <sys/ptrace.h>
-
-#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1)
-#include <sys/reg.h>
-#endif
-
-extern char **environ;
-extern int errno;
-extern int inferior_pid;
-void quit (), perror_with_name ();
-int query ();
-
-/* Start an inferior process and returns its pid.
-   ALLARGS is a vector of program-name and args.
-   ENV is the environment vector to pass.  */
-
-int
-create_inferior (program, allargs)
-     char *program;
-     char **allargs;
-{
-  int pid;
-
-  pid = fork ();
-  if (pid < 0)
-    perror_with_name ("fork");
-
-  if (pid == 0)
-    {
-      ptrace (PTRACE_TRACEME, 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 ()
-{
-  if (inferior_pid == 0)
-    return;
-  ptrace (PTRACE_KILL, inferior_pid, 0, 0);
-  wait (0);
-  /*************inferior_died ();****VK**************/
-}
-
-/* Return nonzero if the given thread is still alive.  */
-int
-mythread_alive (pid)
-     int pid;
-{
-  return 1;
-}
-
-/* Wait for process, returns status */
-
-unsigned char
-mywait (status)
-     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 (step, signal)
-     int step;
-     int signal;
-{
-  errno = 0;
-  ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, inferior_pid, 1, signal);
-  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
-
-#ifndef TARGET_M68K
-/* this table must line up with REGISTER_NAMES in tm-i386v.h */
-/* symbols like 'EAX' come from <sys/reg.h> */
-static int regmap[] = 
-{
-  EAX, ECX, EDX, EBX,
-  UESP, EBP, ESI, EDI,
-  EIP, EFL, CS, SS,
-  DS, ES, FS, GS,
-};
-
-int
-i386_register_u_addr (blockend, regnum)
-     int blockend;
-     int regnum;
-{
-#if 0
-  /* this will be needed if fp registers are reinstated */
-  /* for now, you can look at them with 'info float'
-   * sys5 wont let you change them with ptrace anyway
-   */
-  if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM) 
-    {
-      int ubase, fpstate;
-      struct user u;
-      ubase = blockend + 4 * (SS + 1) - KSTKSZ;
-      fpstate = ubase + ((char *)&u.u_fpstate - (char *)&u);
-      return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM));
-    } 
-  else
-#endif
-    return (blockend + 4 * regmap[regnum]);
-  
-}
-#else /* TARGET_M68K */
-/* This table must line up with REGISTER_NAMES in tm-m68k.h */
-static int regmap[] = 
-{
-#ifdef PT_D0
-  PT_D0, PT_D1, PT_D2, PT_D3, PT_D4, PT_D5, PT_D6, PT_D7,
-  PT_A0, PT_A1, PT_A2, PT_A3, PT_A4, PT_A5, PT_A6, PT_USP,
-  PT_SR, PT_PC,
-#else
-  14, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15,
-  17, 18,
-#endif
-#ifdef PT_FP0
-  PT_FP0, PT_FP1, PT_FP2, PT_FP3, PT_FP4, PT_FP5, PT_FP6, PT_FP7,
-  PT_FPCR, PT_FPSR, PT_FPIAR
-#else
-  21, 24, 27, 30, 33, 36, 39, 42, 45, 46, 47
-#endif
-};
-
-/* BLOCKEND is the value of u.u_ar0, and points to the place where GS
-   is stored.  */
-
-int
-m68k_linux_register_u_addr (blockend, regnum)
-     int blockend;
-     int regnum;
-{
-    return (blockend + 4 * regmap[regnum]);
-}
-#endif
-
-CORE_ADDR
-register_addr (regno, blockend)
-     int regno;
-     CORE_ADDR blockend;
-{
-  CORE_ADDR addr;
-
-  if (regno < 0 || regno >= ARCH_NUM_REGS)
-    error ("Invalid register number %d.", regno);
-
-  REGISTER_U_ADDR (addr, blockend, regno);
-
-  return addr;
-}
-
-/* Fetch one register.  */
-
-static void
-fetch_register (regno)
-     int regno;
-{
-  register unsigned int regaddr;
-  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 (PTRACE_PEEKUSR, inferior_pid,
-				 (PTRACE_ARG3_TYPE) regaddr, 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 (regno)
-     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 (regno)
-     int regno;
-{
-  register unsigned int regaddr;
-  register int i;
-  unsigned int offset = U_REGS_OFFSET;
-
-  if (regno >= 0)
-    {
-#if 0
-      if (CANNOT_STORE_REGISTER (regno))
-	return;
-#endif
-      regaddr = register_addr (regno, offset);
-      errno = 0;
-#if 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
-#endif
-	for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
-	  {
-	    errno = 0;
-	    ptrace (PTRACE_POKEUSR, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
-		    *(int *) &registers[REGISTER_BYTE (regno) + i]);
-	    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-NUM_FREGS; 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 (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));
-
-  /* Read all the longwords */
-  for (i = 0; i < count; i++, addr += sizeof (int))
-    {
-      buffer[i] = ptrace (PTRACE_PEEKTEXT, 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 (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.  */
-
-  buffer[0] = ptrace (PTRACE_PEEKTEXT, inferior_pid, addr, 0);
-
-  if (count > 1)
-    {
-      buffer[count - 1]
-	= ptrace (PTRACE_PEEKTEXT, 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 (PTRACE_POKETEXT, inferior_pid, addr, buffer[i]);
-      if (errno)
-	return errno;
-    }
-
-  return 0;
-}
-
-void
-initialize ()
-{
-  inferior_pid = 0;
-}
-
-int
-have_inferior_p ()
-{
-  return inferior_pid != 0;
-}