1 /* Low level interface to ns532 running mach 3.0.
2 Copyright (C) 1992 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
27 #include <mach/message.h>
28 #include <mach/exception.h>
29 #include <mach_error.h>
31 #define private static
34 /* Find offsets to thread states at compile time.
35 * If your compiler does not grok this, calculate offsets
36 * offsets yourself and use them (or get a compatible compiler :-)
39 #define REG_N_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->ts.reg)
40 #define REG_F_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->fs.reg)
42 /* at reg_offset[i] is the offset to the ns532_combined_state
43 * location where the gdb registers[i] is stored.
46 static int reg_offset[] =
48 REG_N_OFFSET (r0), REG_N_OFFSET (r1), REG_N_OFFSET (r2), REG_N_OFFSET (r3),
49 REG_N_OFFSET (r4), REG_N_OFFSET (r5), REG_N_OFFSET (r6), REG_N_OFFSET (r7),
50 REG_F_OFFSET (l0a), REG_F_OFFSET (l0b), REG_F_OFFSET (l2a), REG_F_OFFSET (l2b),
51 REG_F_OFFSET (l4a), REG_F_OFFSET (l4b), REG_F_OFFSET (l6a), REG_F_OFFSET (l6b),
52 REG_N_OFFSET (sp), REG_N_OFFSET (fp), REG_N_OFFSET (pc), REG_N_OFFSET (psr),
54 REG_F_OFFSET (l0a), REG_F_OFFSET (l1a), REG_F_OFFSET (l2a), REG_F_OFFSET (l3a),
55 REG_F_OFFSET (l4a), REG_F_OFFSET (l5a), REG_F_OFFSET (l6a), REG_F_OFFSET (l7a),
58 #define REG_ADDRESS(state,regnum) ((char *)(state)+reg_offset[regnum])
60 /* Fetch COUNT contiguous registers from thread STATE starting from REGNUM
61 * Caller knows that the regs handled in one transaction are of same size.
63 #define FETCH_REGS(state, regnum, count) \
64 memcpy (®isters[REGISTER_BYTE (regnum)], \
65 (char *)state+reg_offset[ regnum ], \
68 /* Store COUNT contiguous registers to thread STATE starting from REGNUM */
69 #define STORE_REGS(state, regnum, count) \
70 memcpy ((char *)state+reg_offset[ regnum ], \
71 ®isters[REGISTER_BYTE (regnum)], \
75 * Fetch inferiors registers for gdb.
76 * REGNO specifies which (as gdb views it) register, -1 for all.
80 fetch_inferior_registers (int regno)
83 thread_state_data_t state;
84 unsigned int stateCnt = NS532_COMBINED_STATE_COUNT;
87 if (!MACH_PORT_VALID (current_thread))
88 error ("fetch inferior registers: Invalid thread");
90 if (must_suspend_thread)
91 setup_thread (current_thread, 1);
93 ret = thread_get_state (current_thread,
98 if (ret != KERN_SUCCESS)
99 warning ("fetch_inferior_registers: %s ",
100 mach_error_string (ret));
102 /* It may be more effective to store validate all of them,
103 * since we fetched them all anyway
105 else if (regno != -1)
106 supply_register (regno, (char *) state + reg_offset[regno]);
110 for (index = 0; index < NUM_REGS; index++)
111 supply_register (index, (char *) state + reg_offset[index]);
114 if (must_suspend_thread)
115 setup_thread (current_thread, 0);
118 /* Store our register values back into the inferior.
119 * If REGNO is -1, do this for all registers.
120 * Otherwise, REGNO specifies which register
122 * On mach3 all registers are always saved in one call.
125 store_inferior_registers (int regno)
128 thread_state_data_t state;
129 unsigned int stateCnt = NS532_COMBINED_STATE_COUNT;
132 if (!MACH_PORT_VALID (current_thread))
133 error ("store inferior registers: Invalid thread");
135 if (must_suspend_thread)
136 setup_thread (current_thread, 1);
138 /* Fetch the state of the current thread */
139 ret = thread_get_state (current_thread,
140 NS532_COMBINED_STATE,
144 if (ret != KERN_SUCCESS)
146 warning ("store_inferior_registers (get): %s",
147 mach_error_string (ret));
148 if (must_suspend_thread)
149 setup_thread (current_thread, 0);
153 /* move gdb's registers to thread's state
155 * Since we save all registers anyway, save the ones
156 * that gdb thinks are valid (e.g. ignore the regno
161 STORE_REGS (state, regno, 1);
165 for (index = 0; index < NUM_REGS; index++)
166 STORE_REGS (state, index, 1);
169 /* Write gdb's current view of register to the thread
171 ret = thread_set_state (current_thread,
172 NS532_COMBINED_STATE,
174 NS532_COMBINED_STATE_COUNT);
176 if (ret != KERN_SUCCESS)
177 warning ("store_inferior_registers (set): %s",
178 mach_error_string (ret));
180 if (must_suspend_thread)
181 setup_thread (current_thread, 0);