Initial creation of sourceware repository

1 files changed, 0 insertions, 421 deletions

diff --git a/gdb/i386m3-nat.c b/gdb/i386m3-nat.c
deleted file mode 100644
index c0257b1..0000000
--- a/gdb/i386m3-nat.c
+++ /dev/null
@@ -1,421 +0,0 @@
-/* Low level interface to I386 running mach 3.0.
-   Copyright (C) 1992 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 "inferior.h"
-#include "floatformat.h"
-
-#include <stdio.h>
-
-#include <mach.h>
-#include <mach/message.h>
-#include <mach/exception.h>
-#include <mach_error.h>
-
-/* Hmmm... Should this not be here?
- * Now for i386_float_info() target_has_execution
- */
-#include <target.h>
-
-/* This mess is duplicated in bfd/i386mach3.h
- *
- * This is an ugly way to hack around the incorrect
- * definition of UPAGES in i386/machparam.h.
- *
- * The definition should specify the size reserved
- * for "struct user" in core files in PAGES,
- * but instead it gives it in 512-byte core-clicks
- * for i386 and i860.
- */
-#include <sys/param.h>
-#if UPAGES == 16
-#define UAREA_SIZE ctob(UPAGES)
-#elif UPAGES == 2
-#define UAREA_SIZE (NBPG*UPAGES)
-#else
-FIXME!! UPAGES is neither 2 nor 16
-#endif
-
-/* @@@ Should move print_387_status() to i387-tdep.c */
-extern void print_387_control_word ();		/* i387-tdep.h */
-extern void print_387_status_word ();
-
-#define private static
-
-
-/* Find offsets to thread states at compile time.
- * If your compiler does not grok this, calculate offsets
- * offsets yourself and use them (or get a compatible compiler :-)
- */
-
-#define  REG_OFFSET(reg) (int)(&((struct i386_thread_state *)0)->reg)
-
-/* at reg_offset[i] is the offset to the i386_thread_state
- * location where the gdb registers[i] is stored.
- */
-
-static int reg_offset[] = 
-{
-  REG_OFFSET(eax),  REG_OFFSET(ecx), REG_OFFSET(edx), REG_OFFSET(ebx),
-  REG_OFFSET(uesp), REG_OFFSET(ebp), REG_OFFSET(esi), REG_OFFSET(edi),
-  REG_OFFSET(eip),  REG_OFFSET(efl), REG_OFFSET(cs),  REG_OFFSET(ss),
-  REG_OFFSET(ds),   REG_OFFSET(es),  REG_OFFSET(fs),  REG_OFFSET(gs)
-};
-
-#define REG_ADDRESS(state,regnum) ((char *)(state)+reg_offset[regnum])
-
-/* Fetch COUNT contiguous registers from thread STATE starting from REGNUM
- * Caller knows that the regs handled in one transaction are of same size.
- */
-#define FETCH_REGS(state, regnum, count) \
-  memcpy (&registers[REGISTER_BYTE (regnum)], \
-	  REG_ADDRESS (state, regnum), \
-	  count*REGISTER_SIZE)
-
-/* Store COUNT contiguous registers to thread STATE starting from REGNUM */
-#define STORE_REGS(state, regnum, count) \
-  memcpy (REG_ADDRESS (state, regnum), \
-	  &registers[REGISTER_BYTE (regnum)], \
-	  count*REGISTER_SIZE)
-
-/*
- * Fetch inferiors registers for gdb.
- * REGNO specifies which (as gdb views it) register, -1 for all.
- */
-
-void
-fetch_inferior_registers (regno)
-     int regno;
-{
-  kern_return_t ret;
-  thread_state_data_t state;
-  unsigned int stateCnt = i386_THREAD_STATE_COUNT;
-  int index;
-  
-  if (! MACH_PORT_VALID (current_thread))
-    error ("fetch inferior registers: Invalid thread");
-
-  if (must_suspend_thread)
-    setup_thread (current_thread, 1);
-
-  ret = thread_get_state (current_thread,
-			  i386_THREAD_STATE,
-			  state,
-			  &stateCnt);
-
-  if (ret != KERN_SUCCESS)
-    warning ("fetch_inferior_registers: %s ",
-	     mach_error_string (ret));
-#if 0
-  /* It may be more effective to store validate all of them,
-   * since we fetched them all anyway
-   */
-  else if (regno != -1)
-    supply_register (regno, (char *)state+reg_offset[regno]);
-#endif
-  else
-    {
-      for (index = 0; index < NUM_REGS; index++) 
-	supply_register (index, (char *)state+reg_offset[index]);
-    }
-
-  if (must_suspend_thread)
-    setup_thread (current_thread, 0);
-}
-
-/* Store our register values back into the inferior.
- * If REGNO is -1, do this for all registers.
- * Otherwise, REGNO specifies which register
- *
- * On mach3 all registers are always saved in one call.
- */
-void
-store_inferior_registers (regno)
-     int regno;
-{
-  kern_return_t ret;
-  thread_state_data_t state;
-  unsigned int stateCnt = i386_THREAD_STATE_COUNT;
-  register int index;
-
-  if (! MACH_PORT_VALID (current_thread))
-    error ("store inferior registers: Invalid thread");
-
-  if (must_suspend_thread)
-    setup_thread (current_thread, 1);
-
-  /* Fetch the state of the current thread */
-  ret = thread_get_state (current_thread,
-			  i386_THREAD_STATE,
-			  state,
-			  &stateCnt);
-
-   if (ret != KERN_SUCCESS) 
-    {
-      warning ("store_inferior_registers (get): %s",
-	       mach_error_string (ret));
-      if (must_suspend_thread)
-	setup_thread (current_thread, 0);
-      return;
-    }
-
-  /* move gdb's registers to thread's state
-   *
-   * Since we save all registers anyway, save the ones
-   * that gdb thinks are valid (e.g. ignore the regno
-   * parameter)
-   */
-#if 0
-  if (regno != -1)
-    STORE_REGS (state, regno, 1);
-  else
-#endif
-    {
-      for (index = 0; index < NUM_REGS; index++) 
-	STORE_REGS (state, index, 1);
-    }
-  
-  /* Write gdb's current view of register to the thread
-   */
-  ret = thread_set_state (current_thread,
-			  i386_THREAD_STATE,
-			  state,
-			  i386_THREAD_STATE_COUNT);
-  
-  if (ret != KERN_SUCCESS)
-    warning ("store_inferior_registers (set): %s",
-	     mach_error_string (ret));
-
-  if (must_suspend_thread)
-    setup_thread (current_thread, 0);
-}
-
-
-
-/* Return the address in the core dump or inferior of register REGNO.
- * BLOCKEND should be the address of the end of the UPAGES area read
- * in memory, but it's not?
- *
- * Currently our UX server dumps the whole thread state to the
- * core file. If your UX does something else, adapt the routine
- * below to return the offset to the given register.
- * 
- * Called by core-aout.c(fetch_core_registers)
- */
-
-CORE_ADDR
-register_addr (regno, blockend)
-     int regno;
-     CORE_ADDR blockend;
-{
-  CORE_ADDR addr;
-
-  if (regno < 0 || regno >= NUM_REGS)
-    error ("Invalid register number %d.", regno);
-
-  /* UAREA_SIZE == 8 kB in i386 */
-  addr = (unsigned int)REG_ADDRESS (UAREA_SIZE - sizeof(struct i386_thread_state), regno);
-
-  return addr;
-}
-
-/* jtv@hut.fi: I copied and modified this 387 code from
- * gdb/i386-xdep.c. Modifications for Mach 3.0.
- *
- * i387 status dumper. See also i387-tdep.c
- */
-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];
-};
-/* This routine is machine independent?
- * Should move it to i387-tdep.c but you need to export struct env387
- */
-private
-print_387_status (status, ep)
-     unsigned short status;
-     struct env387 *ep;
-{
-  int i;
-  int bothstatus;
-  int top;
-  int fpreg;
-  unsigned char *p;
-  
-  bothstatus = ((status != 0) && (ep->status != 0));
-  if (status != 0) 
-    {
-      if (bothstatus)
-	printf_unfiltered ("u: ");
-      print_387_status_word (status);
-    }
-  
-  if (ep->status != 0) 
-    {
-      if (bothstatus)
-	printf_unfiltered ("e: ");
-      print_387_status_word (ep->status);
-    }
-  
-  print_387_control_word (ep->control);
-  printf_unfiltered ("last exception: ");
-  printf_unfiltered ("opcode %s; ", local_hex_string(ep->opcode));
-  printf_unfiltered ("pc %s:", local_hex_string(ep->code_seg));
-  printf_unfiltered ("%s; ", local_hex_string(ep->eip));
-  printf_unfiltered ("operand %s", local_hex_string(ep->operand_seg));
-  printf_unfiltered (":%s\n", local_hex_string(ep->operand));
-  
-  top = (ep->status >> 11) & 7;
-  
-  printf_unfiltered ("regno  tag  msb              lsb  value\n");
-  for (fpreg = 7; fpreg >= 0; fpreg--) 
-    {
-      double val;
-      
-      printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : "  ", fpreg);
-      
-      switch ((ep->tag >> (fpreg * 2)) & 3) 
-	{
-	case 0: printf_unfiltered ("valid "); break;
-	case 1: printf_unfiltered ("zero  "); break;
-	case 2: printf_unfiltered ("trap  "); break;
-	case 3: printf_unfiltered ("empty "); break;
-	}
-      for (i = 9; i >= 0; i--)
-	printf_unfiltered ("%02x", ep->regs[fpreg][i]);
-      
-      floatformat_to_double (&floatformat_i387_ext, (char *)ep->regs[fpreg],
-			       &val);
-      printf_unfiltered ("  %g\n", val);
-    }
-  if (ep->r0)
-    printf_unfiltered ("warning: reserved0 is %s\n", local_hex_string(ep->r0));
-  if (ep->r1)
-    printf_unfiltered ("warning: reserved1 is %s\n", local_hex_string(ep->r1));
-  if (ep->r2)
-    printf_unfiltered ("warning: reserved2 is %s\n", local_hex_string(ep->r2));
-  if (ep->r3)
-    printf_unfiltered ("warning: reserved3 is %s\n", local_hex_string(ep->r3));
-}
-	
-/*
- * values that go into fp_kind (from <i386/fpreg.h>)
- */
-#define FP_NO   0       /* no fp chip, no emulator (no fp support)      */
-#define FP_SW   1       /* no fp chip, using software emulator          */
-#define FP_HW   2       /* chip present bit                             */
-#define FP_287  2       /* 80287 chip present                           */
-#define FP_387  3       /* 80387 chip present                           */
-
-typedef struct fpstate {
-#if 1
-  unsigned char	state[FP_STATE_BYTES]; /* "hardware" state */
-#else
-  struct env387	state;	/* Actually this */
-#endif
-  int status;		/* Duplicate status */
-} *fpstate_t;
-
-/* Mach 3 specific routines.
- */
-private boolean_t
-get_i387_state (fstate)
-     struct fpstate *fstate;
-{
-  kern_return_t ret;
-  thread_state_data_t state;
-  unsigned int fsCnt = i386_FLOAT_STATE_COUNT;
-  struct i386_float_state *fsp;
-  
-  ret = thread_get_state (current_thread,
-			  i386_FLOAT_STATE,
-			  state,
-			  &fsCnt);
-
-  if (ret != KERN_SUCCESS)
-    {
-      warning ("Can not get live floating point state: %s",
-	       mach_error_string (ret));
-      return FALSE;
-    }
-
-  fsp = (struct i386_float_state *)state;
-  /* The 387 chip (also 486 counts) or a software emulator? */
-  if (!fsp->initialized || (fsp->fpkind != FP_387 && fsp->fpkind != FP_SW))
-    return FALSE;
-
-  /* Clear the target then copy thread's float state there.
-     Make a copy of the status word, for some reason?
-   */
-  memset (fstate, 0, sizeof (struct fpstate));
-
-  fstate->status = fsp->exc_status;
-
-  memcpy (fstate->state, (char *)&fsp->hw_state, FP_STATE_BYTES);
-
-  return TRUE;
-}
-
-private boolean_t
-get_i387_core_state (fstate)
-     struct fpstate *fstate;
-{
-  /* Not implemented yet. Core files do not contain float state. */
-  return FALSE;
-}
-
-/*
- * This is called by "info float" command
- */
-void
-i386_mach3_float_info()
-{
-  char buf [sizeof (struct fpstate) + 2 * sizeof (int)];
-  boolean_t valid = FALSE;
-  fpstate_t fps;
-  
-  if (target_has_execution)
-    valid = get_i387_state (buf);
-#if 0  
-  else if (WE HAVE CORE FILE)  /* @@@@ Core files not supported */
-    valid = get_i387_core_state (buf);
-#endif    
-
-  if (!valid) 
-    {
-      warning ("no floating point status saved");
-      return;
-    }
-  
-  fps = (fpstate_t) buf;
-
-  print_387_status (fps->status, (struct env387 *)fps->state);
-}