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- /* Low level interface to ns532 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "defs.h"
- #include "inferior.h"
-
- #include <stdio.h>
-
- #include <mach.h>
- #include <mach/message.h>
- #include <mach/exception.h>
- #include <mach_error.h>
-
- #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_N_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->ts.reg)
- #define REG_F_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->fs.reg)
-
- /* at reg_offset[i] is the offset to the ns532_combined_state
- * location where the gdb registers[i] is stored.
- */
-
- static int reg_offset[] =
- {
- REG_N_OFFSET(r0), REG_N_OFFSET(r1), REG_N_OFFSET(r2), REG_N_OFFSET(r3),
- REG_N_OFFSET(r4), REG_N_OFFSET(r5), REG_N_OFFSET(r6), REG_N_OFFSET(r7),
- REG_F_OFFSET(l0a), REG_F_OFFSET(l1a),REG_F_OFFSET(l2a),REG_F_OFFSET(l3a),
- REG_F_OFFSET(l4a), REG_F_OFFSET(l5a),REG_F_OFFSET(l6a),REG_F_OFFSET(l7a),
- REG_N_OFFSET(sp), REG_N_OFFSET(fp), REG_N_OFFSET(pc), REG_N_OFFSET(psr),
- REG_F_OFFSET(fsr),
- REG_F_OFFSET(l0a), REG_F_OFFSET(l2a),REG_F_OFFSET(l4a),REG_F_OFFSET(l6a)
- /* @@@ 532 has more double length floating point regs, not accessed currently */
- };
-
- /* 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 (®isters[REGISTER_BYTE (regnum)], \
- (char *)state+reg_offset[ regnum ], \
- count*REGISTER_SIZE)
-
- /* Store COUNT contiguous registers to thread STATE starting from REGNUM */
- #define STORE_REGS(state, regnum, count) \
- memcpy ((char *)state+reg_offset[ regnum ], \
- ®isters[REGISTER_BYTE (regnum)], \
- count*REGISTER_SIZE)
-
- /* 4.4 bfd support function */
- /* jtv@hut.fi: UNIMPLEMENTED!!!!! */
-
- void
- fetch_core_registers (core_regs, core_reg_size, which)
- char *core_regs;
- unsigned int core_reg_size;
- int which;
- {
- error ("Unimplemented routine fetch_core_registers called");
- }
-
- /*
- * 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 = NS532_COMBINED_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,
- NS532_COMBINED_STATE,
- state,
- &stateCnt);
-
- if (ret != KERN_SUCCESS)
- message ("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 = NS532_COMBINED_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,
- NS532_COMBINED_STATE,
- state,
- &stateCnt);
-
- if (ret != KERN_SUCCESS)
- {
- message ("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,
- NS532_COMBINED_STATE,
- state,
- NS532_COMBINED_STATE_COUNT);
-
- if (ret != KERN_SUCCESS)
- message ("store_inferior_registers (set): %s",
- mach_error_string (ret));
-
- if (must_suspend_thread)
- setup_thread (current_thread, 0);
- }
-