This commit was generated by cvs2svn to compensate for changes in r98944,

which included commits to RCS files with non-trunk default branches.

1 files changed, 599 insertions, 0 deletions

diff --git a/contrib/gdb/gdb/gdbserver/low-nbsd.c b/contrib/gdb/gdb/gdbserver/low-nbsd.c
new file mode 100644
index 0000000..9046d63
--- /dev/null
+++ b/contrib/gdb/gdb/gdbserver/low-nbsd.c
@@ -0,0 +1,599 @@
+/* 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 (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 (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 ();
+}