+/* 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, 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
+\f
+
+/* 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 (l0b), REG_F_OFFSET (l2a), REG_F_OFFSET (l2b),
+ REG_F_OFFSET (l4a), REG_F_OFFSET (l4b), REG_F_OFFSET (l6a), REG_F_OFFSET (l6b),
+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 (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),
+};
+
+#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 (®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)
+\f
+/*
+ * Fetch inferiors registers for gdb.
+ * REGNO specifies which (as gdb views it) register, -1 for all.
+ */
+
+void
+fetch_inferior_registers (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)
+ 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);
+}
+\f
+/* 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 (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)
+ {
+ 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,
+ NS532_COMBINED_STATE,
+ state,
+ NS532_COMBINED_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);
+}
projects / thirdparty / binutils-gdb.git / blobdiff