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// OBSOLETE /* Low level interface to I386 running mach 3.0.

// OBSOLETE    Copyright 1992, 1993, 1994, 1996, 2000, 2001

// OBSOLETE    Free Software Foundation, Inc.

// OBSOLETE 

// OBSOLETE    This file is part of GDB.

// OBSOLETE 

// OBSOLETE    This program is free software; you can redistribute it and/or modify

// OBSOLETE    it under the terms of the GNU General Public License as published by

// OBSOLETE    the Free Software Foundation; either version 2 of the License, or

// OBSOLETE    (at your option) any later version.

// OBSOLETE 

// OBSOLETE    This program is distributed in the hope that it will be useful,

// OBSOLETE    but WITHOUT ANY WARRANTY; without even the implied warranty of

// OBSOLETE    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// OBSOLETE    GNU General Public License for more details.

// OBSOLETE 

// OBSOLETE    You should have received a copy of the GNU General Public License

// OBSOLETE    along with this program; if not, write to the Free Software

// OBSOLETE    Foundation, Inc., 59 Temple Place - Suite 330,

// OBSOLETE    Boston, MA 02111-1307, USA.  */

// OBSOLETE 

// OBSOLETE #include "defs.h"

// OBSOLETE #include "inferior.h"

// OBSOLETE #include "floatformat.h"

// OBSOLETE #include "regcache.h"

// OBSOLETE 

// OBSOLETE #include <stdio.h>

// OBSOLETE 

// OBSOLETE #include <mach.h>

// OBSOLETE #include <mach/message.h>

// OBSOLETE #include <mach/exception.h>

// OBSOLETE #include <mach_error.h>

// OBSOLETE 

// OBSOLETE /* Hmmm... Should this not be here?

// OBSOLETE  * Now for i386_float_info() target_has_execution

// OBSOLETE  */

// OBSOLETE #include <target.h>

// OBSOLETE 

// OBSOLETE /* This mess is duplicated in bfd/i386mach3.h

// OBSOLETE 

// OBSOLETE  * This is an ugly way to hack around the incorrect

// OBSOLETE  * definition of UPAGES in i386/machparam.h.

// OBSOLETE  *

// OBSOLETE  * The definition should specify the size reserved

// OBSOLETE  * for "struct user" in core files in PAGES,

// OBSOLETE  * but instead it gives it in 512-byte core-clicks

// OBSOLETE  * for i386 and i860.

// OBSOLETE  */

// OBSOLETE #include <sys/param.h>

// OBSOLETE #if UPAGES == 16

// OBSOLETE #define UAREA_SIZE ctob(UPAGES)

// OBSOLETE #elif UPAGES == 2

// OBSOLETE #define UAREA_SIZE (NBPG*UPAGES)

// OBSOLETE #else

// OBSOLETE FIXME ! !UPAGES is neither 2 nor 16

// OBSOLETE #endif

// OBSOLETE 

// OBSOLETE /* @@@ Should move print_387_status() to i387-tdep.c */

// OBSOLETE extern void print_387_control_word ();              /* i387-tdep.h */

// OBSOLETE extern void print_387_status_word ();

// OBSOLETE 

// OBSOLETE #define private static

// OBSOLETE 

// OBSOLETE 

// OBSOLETE /* Find offsets to thread states at compile time.

// OBSOLETE  * If your compiler does not grok this, calculate offsets

// OBSOLETE  * offsets yourself and use them (or get a compatible compiler :-)

// OBSOLETE  */

// OBSOLETE 

// OBSOLETE #define  REG_OFFSET(reg) (int)(&((struct i386_thread_state *)0)->reg)

// OBSOLETE 

// OBSOLETE /* at reg_offset[i] is the offset to the i386_thread_state

// OBSOLETE  * location where the gdb registers[i] is stored.

// OBSOLETE  */

// OBSOLETE 

// OBSOLETE static int reg_offset[] =

// OBSOLETE {

// OBSOLETE   REG_OFFSET (eax), REG_OFFSET (ecx), REG_OFFSET (edx), REG_OFFSET (ebx),

// OBSOLETE   REG_OFFSET (uesp), REG_OFFSET (ebp), REG_OFFSET (esi), REG_OFFSET (edi),

// OBSOLETE   REG_OFFSET (eip), REG_OFFSET (efl), REG_OFFSET (cs), REG_OFFSET (ss),

// OBSOLETE   REG_OFFSET (ds), REG_OFFSET (es), REG_OFFSET (fs), REG_OFFSET (gs)

// OBSOLETE };

// OBSOLETE 

// OBSOLETE #define REG_ADDRESS(state,regnum) ((char *)(state)+reg_offset[regnum])

// OBSOLETE 

// OBSOLETE /* Fetch COUNT contiguous registers from thread STATE starting from REGNUM

// OBSOLETE  * Caller knows that the regs handled in one transaction are of same size.

// OBSOLETE  */

// OBSOLETE #define FETCH_REGS(state, regnum, count) \

// OBSOLETE   memcpy (&registers[REGISTER_BYTE (regnum)], \

// OBSOLETE       REG_ADDRESS (state, regnum), \

// OBSOLETE       count*REGISTER_SIZE)

// OBSOLETE 

// OBSOLETE /* Store COUNT contiguous registers to thread STATE starting from REGNUM */

// OBSOLETE #define STORE_REGS(state, regnum, count) \

// OBSOLETE   memcpy (REG_ADDRESS (state, regnum), \

// OBSOLETE       &registers[REGISTER_BYTE (regnum)], \

// OBSOLETE       count*REGISTER_SIZE)

// OBSOLETE 

// OBSOLETE /*

// OBSOLETE  * Fetch inferiors registers for gdb.

// OBSOLETE  * REGNO specifies which (as gdb views it) register, -1 for all.

// OBSOLETE  */

// OBSOLETE 

// OBSOLETE void

// OBSOLETE fetch_inferior_registers (int regno)

// OBSOLETE {

// OBSOLETE   kern_return_t ret;

// OBSOLETE   thread_state_data_t state;

// OBSOLETE   unsigned int stateCnt = i386_THREAD_STATE_COUNT;

// OBSOLETE   int index;

// OBSOLETE 

// OBSOLETE   if (!MACH_PORT_VALID (current_thread))

// OBSOLETE     error ("fetch inferior registers: Invalid thread");

// OBSOLETE 

// OBSOLETE   if (must_suspend_thread)

// OBSOLETE     setup_thread (current_thread, 1);

// OBSOLETE 

// OBSOLETE   ret = thread_get_state (current_thread,

// OBSOLETE                       i386_THREAD_STATE,

// OBSOLETE                       state,

// OBSOLETE                       &stateCnt);

// OBSOLETE 

// OBSOLETE   if (ret != KERN_SUCCESS)

// OBSOLETE     warning ("fetch_inferior_registers: %s ",

// OBSOLETE          mach_error_string (ret));

// OBSOLETE #if 0

// OBSOLETE   /* It may be more effective to store validate all of them,

// OBSOLETE    * since we fetched them all anyway

// OBSOLETE    */

// OBSOLETE   else if (regno != -1)

// OBSOLETE     supply_register (regno, (char *) state + reg_offset[regno]);

// OBSOLETE #endif

// OBSOLETE   else

// OBSOLETE     {

// OBSOLETE       for (index = 0; index < NUM_REGS; index++)

// OBSOLETE     supply_register (index, (char *) state + reg_offset[index]);

// OBSOLETE     }

// OBSOLETE 

// OBSOLETE   if (must_suspend_thread)

// OBSOLETE     setup_thread (current_thread, 0);

// OBSOLETE }

// OBSOLETE 

// OBSOLETE /* Store our register values back into the inferior.

// OBSOLETE  * If REGNO is -1, do this for all registers.

// OBSOLETE  * Otherwise, REGNO specifies which register

// OBSOLETE  *

// OBSOLETE  * On mach3 all registers are always saved in one call.

// OBSOLETE  */

// OBSOLETE void

// OBSOLETE store_inferior_registers (int regno)

// OBSOLETE {

// OBSOLETE   kern_return_t ret;

// OBSOLETE   thread_state_data_t state;

// OBSOLETE   unsigned int stateCnt = i386_THREAD_STATE_COUNT;

// OBSOLETE   register int index;

// OBSOLETE 

// OBSOLETE   if (!MACH_PORT_VALID (current_thread))

// OBSOLETE     error ("store inferior registers: Invalid thread");

// OBSOLETE 

// OBSOLETE   if (must_suspend_thread)

// OBSOLETE     setup_thread (current_thread, 1);

// OBSOLETE 

// OBSOLETE   /* Fetch the state of the current thread */

// OBSOLETE   ret = thread_get_state (current_thread,

// OBSOLETE                       i386_THREAD_STATE,

// OBSOLETE                       state,

// OBSOLETE                       &stateCnt);

// OBSOLETE 

// OBSOLETE   if (ret != KERN_SUCCESS)

// OBSOLETE     {

// OBSOLETE       warning ("store_inferior_registers (get): %s",

// OBSOLETE            mach_error_string (ret));

// OBSOLETE       if (must_suspend_thread)

// OBSOLETE     setup_thread (current_thread, 0);

// OBSOLETE       return;

// OBSOLETE     }

// OBSOLETE 

// OBSOLETE   /* move gdb's registers to thread's state

// OBSOLETE 

// OBSOLETE    * Since we save all registers anyway, save the ones

// OBSOLETE    * that gdb thinks are valid (e.g. ignore the regno

// OBSOLETE    * parameter)

// OBSOLETE    */

// OBSOLETE #if 0

// OBSOLETE   if (regno != -1)

// OBSOLETE     STORE_REGS (state, regno, 1);

// OBSOLETE   else

// OBSOLETE #endif

// OBSOLETE     {

// OBSOLETE       for (index = 0; index < NUM_REGS; index++)

// OBSOLETE     STORE_REGS (state, index, 1);

// OBSOLETE     }

// OBSOLETE 

// OBSOLETE   /* Write gdb's current view of register to the thread

// OBSOLETE    */

// OBSOLETE   ret = thread_set_state (current_thread,

// OBSOLETE                       i386_THREAD_STATE,

// OBSOLETE                       state,

// OBSOLETE                       i386_THREAD_STATE_COUNT);

// OBSOLETE 

// OBSOLETE   if (ret != KERN_SUCCESS)

// OBSOLETE     warning ("store_inferior_registers (set): %s",

// OBSOLETE          mach_error_string (ret));

// OBSOLETE 

// OBSOLETE   if (must_suspend_thread)

// OBSOLETE     setup_thread (current_thread, 0);

// OBSOLETE }

// OBSOLETE 

// OBSOLETE 

// OBSOLETE 

// OBSOLETE /* Return the address in the core dump or inferior of register REGNO.

// OBSOLETE  * BLOCKEND should be the address of the end of the UPAGES area read

// OBSOLETE  * in memory, but it's not?

// OBSOLETE  *

// OBSOLETE  * Currently our UX server dumps the whole thread state to the

// OBSOLETE  * core file. If your UX does something else, adapt the routine

// OBSOLETE  * below to return the offset to the given register.

// OBSOLETE  * 

// OBSOLETE  * Called by core-aout.c(fetch_core_registers)

// OBSOLETE  */

// OBSOLETE 

// OBSOLETE CORE_ADDR

// OBSOLETE register_addr (int regno, CORE_ADDR blockend)

// OBSOLETE {

// OBSOLETE   CORE_ADDR addr;

// OBSOLETE 

// OBSOLETE   if (regno < 0 || regno >= NUM_REGS)

// OBSOLETE     error ("Invalid register number %d.", regno);

// OBSOLETE 

// OBSOLETE   /* UAREA_SIZE == 8 kB in i386 */

// OBSOLETE   addr = (unsigned int) REG_ADDRESS (UAREA_SIZE - sizeof (struct i386_thread_state), regno);

// OBSOLETE 

// OBSOLETE   return addr;

// OBSOLETE }

// OBSOLETE 

// OBSOLETE /* jtv@hut.fi: I copied and modified this 387 code from

// OBSOLETE  * gdb/i386-xdep.c. Modifications for Mach 3.0.

// OBSOLETE  *

// OBSOLETE  * i387 status dumper. See also i387-tdep.c

// OBSOLETE  */

// OBSOLETE struct env387

// OBSOLETE {

// OBSOLETE   unsigned short control;

// OBSOLETE   unsigned short r0;

// OBSOLETE   unsigned short status;

// OBSOLETE   unsigned short r1;

// OBSOLETE   unsigned short tag;

// OBSOLETE   unsigned short r2;

// OBSOLETE   unsigned long eip;

// OBSOLETE   unsigned short code_seg;

// OBSOLETE   unsigned short opcode;

// OBSOLETE   unsigned long operand;

// OBSOLETE   unsigned short operand_seg;

// OBSOLETE   unsigned short r3;

// OBSOLETE   unsigned char regs[8][10];

// OBSOLETE };

// OBSOLETE /* This routine is machine independent?

// OBSOLETE  * Should move it to i387-tdep.c but you need to export struct env387

// OBSOLETE  */

// OBSOLETE private

// OBSOLETE print_387_status (unsigned short status, struct env387 *ep)

// OBSOLETE {

// OBSOLETE   int i;

// OBSOLETE   int bothstatus;

// OBSOLETE   int top;

// OBSOLETE   int fpreg;

// OBSOLETE   unsigned char *p;

// OBSOLETE 

// OBSOLETE   bothstatus = ((status != 0) && (ep->status != 0));

// OBSOLETE   if (status != 0)

// OBSOLETE     {

// OBSOLETE       if (bothstatus)

// OBSOLETE     printf_unfiltered ("u: ");

// OBSOLETE       print_387_status_word (status);

// OBSOLETE     }

// OBSOLETE 

// OBSOLETE   if (ep->status != 0)

// OBSOLETE     {

// OBSOLETE       if (bothstatus)

// OBSOLETE     printf_unfiltered ("e: ");

// OBSOLETE       print_387_status_word (ep->status);

// OBSOLETE     }

// OBSOLETE 

// OBSOLETE   print_387_control_word (ep->control);

// OBSOLETE   printf_unfiltered ("last exception: ");

// OBSOLETE   printf_unfiltered ("opcode %s; ", local_hex_string (ep->opcode));

// OBSOLETE   printf_unfiltered ("pc %s:", local_hex_string (ep->code_seg));

// OBSOLETE   printf_unfiltered ("%s; ", local_hex_string (ep->eip));

// OBSOLETE   printf_unfiltered ("operand %s", local_hex_string (ep->operand_seg));

// OBSOLETE   printf_unfiltered (":%s\n", local_hex_string (ep->operand));

// OBSOLETE 

// OBSOLETE   top = (ep->status >> 11) & 7;

// OBSOLETE 

// OBSOLETE   printf_unfiltered ("regno  tag  msb              lsb  value\n");

// OBSOLETE   for (fpreg = 7; fpreg >= 0; fpreg--)

// OBSOLETE     {

// OBSOLETE       double val;

// OBSOLETE 

// OBSOLETE       printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : "  ", fpreg);

// OBSOLETE 

// OBSOLETE       switch ((ep->tag >> (fpreg * 2)) & 3)

// OBSOLETE     {

// OBSOLETE     case 0:

// OBSOLETE       printf_unfiltered ("valid ");

// OBSOLETE       break;

// OBSOLETE     case 1:

// OBSOLETE       printf_unfiltered ("zero  ");

// OBSOLETE       break;

// OBSOLETE     case 2:

// OBSOLETE       printf_unfiltered ("trap  ");

// OBSOLETE       break;

// OBSOLETE     case 3:

// OBSOLETE       printf_unfiltered ("empty ");

// OBSOLETE       break;

// OBSOLETE     }

// OBSOLETE       for (i = 9; i >= 0; i--)

// OBSOLETE     printf_unfiltered ("%02x", ep->regs[fpreg][i]);

// OBSOLETE 

// OBSOLETE       floatformat_to_double (&floatformat_i387_ext, (char *) ep->regs[fpreg],

// OBSOLETE                          &val);

// OBSOLETE       printf_unfiltered ("  %g\n", val);

// OBSOLETE     }

// OBSOLETE   if (ep->r0)

// OBSOLETE     printf_unfiltered ("warning: reserved0 is %s\n", local_hex_string (ep->r0));

// OBSOLETE   if (ep->r1)

// OBSOLETE     printf_unfiltered ("warning: reserved1 is %s\n", local_hex_string (ep->r1));

// OBSOLETE   if (ep->r2)

// OBSOLETE     printf_unfiltered ("warning: reserved2 is %s\n", local_hex_string (ep->r2));

// OBSOLETE   if (ep->r3)

// OBSOLETE     printf_unfiltered ("warning: reserved3 is %s\n", local_hex_string (ep->r3));

// OBSOLETE }

// OBSOLETE 

// OBSOLETE /*

// OBSOLETE  * values that go into fp_kind (from <i386/fpreg.h>)

// OBSOLETE  */

// OBSOLETE #define FP_NO   0           /* no fp chip, no emulator (no fp support)      */

// OBSOLETE #define FP_SW   1           /* no fp chip, using software emulator          */

// OBSOLETE #define FP_HW   2           /* chip present bit                             */

// OBSOLETE #define FP_287  2           /* 80287 chip present                           */

// OBSOLETE #define FP_387  3           /* 80387 chip present                           */

// OBSOLETE 

// OBSOLETE typedef struct fpstate

// OBSOLETE {

// OBSOLETE #if 1

// OBSOLETE   unsigned char state[FP_STATE_BYTES];      /* "hardware" state */

// OBSOLETE #else

// OBSOLETE   struct env387 state;              /* Actually this */

// OBSOLETE #endif

// OBSOLETE   int status;                       /* Duplicate status */

// OBSOLETE }

// OBSOLETE  *fpstate_t;

// OBSOLETE 

// OBSOLETE /* Mach 3 specific routines.

// OBSOLETE  */

// OBSOLETE private boolean_t

// OBSOLETE get_i387_state (struct fpstate *fstate)

// OBSOLETE {

// OBSOLETE   kern_return_t ret;

// OBSOLETE   thread_state_data_t state;

// OBSOLETE   unsigned int fsCnt = i386_FLOAT_STATE_COUNT;

// OBSOLETE   struct i386_float_state *fsp;

// OBSOLETE 

// OBSOLETE   ret = thread_get_state (current_thread,

// OBSOLETE                       i386_FLOAT_STATE,

// OBSOLETE                       state,

// OBSOLETE                       &fsCnt);

// OBSOLETE 

// OBSOLETE   if (ret != KERN_SUCCESS)

// OBSOLETE     {

// OBSOLETE       warning ("Can not get live floating point state: %s",

// OBSOLETE            mach_error_string (ret));

// OBSOLETE       return FALSE;

// OBSOLETE     }

// OBSOLETE 

// OBSOLETE   fsp = (struct i386_float_state *) state;

// OBSOLETE   /* The 387 chip (also 486 counts) or a software emulator? */

// OBSOLETE   if (!fsp->initialized || (fsp->fpkind != FP_387 && fsp->fpkind != FP_SW))

// OBSOLETE     return FALSE;

// OBSOLETE 

// OBSOLETE   /* Clear the target then copy thread's float state there.

// OBSOLETE      Make a copy of the status word, for some reason?

// OBSOLETE    */

// OBSOLETE   memset (fstate, 0, sizeof (struct fpstate));

// OBSOLETE 

// OBSOLETE   fstate->status = fsp->exc_status;

// OBSOLETE 

// OBSOLETE   memcpy (fstate->state, (char *) &fsp->hw_state, FP_STATE_BYTES);

// OBSOLETE 

// OBSOLETE   return TRUE;

// OBSOLETE }

// OBSOLETE 

// OBSOLETE private boolean_t

// OBSOLETE get_i387_core_state (struct fpstate *fstate)

// OBSOLETE {

// OBSOLETE   /* Not implemented yet. Core files do not contain float state. */

// OBSOLETE   return FALSE;

// OBSOLETE }

// OBSOLETE 

// OBSOLETE /*

// OBSOLETE  * This is called by "info float" command

// OBSOLETE  */

// OBSOLETE void

// OBSOLETE i386_mach3_float_info (void)

// OBSOLETE {

// OBSOLETE   char buf[sizeof (struct fpstate) + 2 * sizeof (int)];

// OBSOLETE   boolean_t valid = FALSE;

// OBSOLETE   fpstate_t fps;

// OBSOLETE 

// OBSOLETE   if (target_has_execution)

// OBSOLETE     valid = get_i387_state (buf);

// OBSOLETE #if 0

// OBSOLETE   else if (WE HAVE CORE FILE)       /* @@@@ Core files not supported */

// OBSOLETE     valid = get_i387_core_state (buf);

// OBSOLETE #endif

// OBSOLETE 

// OBSOLETE   if (!valid)

// OBSOLETE     {

// OBSOLETE       warning ("no floating point status saved");

// OBSOLETE       return;

// OBSOLETE     }

// OBSOLETE 

// OBSOLETE   fps = (fpstate_t) buf;

// OBSOLETE 

// OBSOLETE   print_387_status (fps->status, (struct env387 *) fps->state);

// OBSOLETE }