1 /* Low level interface to ns532 running mach 3.0.
2 Copyright 1992, 1993, 1998, 2000, 2001 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. */
28 #include <mach/message.h>
29 #include <mach/exception.h>
30 #include <mach_error.h>
32 #define private static
35 /* Find offsets to thread states at compile time.
36 * If your compiler does not grok this, calculate offsets
37 * offsets yourself and use them (or get a compatible compiler :-)
40 #define REG_N_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->ts.reg)
41 #define REG_F_OFFSET(reg) (int)(&((struct ns532_combined_state *)0)->fs.reg)
43 /* at reg_offset[i] is the offset to the ns532_combined_state
44 * location where the gdb registers[i] is stored.
47 static int reg_offset
[] =
49 REG_N_OFFSET (r0
), REG_N_OFFSET (r1
), REG_N_OFFSET (r2
), REG_N_OFFSET (r3
),
50 REG_N_OFFSET (r4
), REG_N_OFFSET (r5
), REG_N_OFFSET (r6
), REG_N_OFFSET (r7
),
51 REG_F_OFFSET (l0a
), REG_F_OFFSET (l0b
), REG_F_OFFSET (l2a
), REG_F_OFFSET (l2b
),
52 REG_F_OFFSET (l4a
), REG_F_OFFSET (l4b
), REG_F_OFFSET (l6a
), REG_F_OFFSET (l6b
),
53 REG_N_OFFSET (sp
), REG_N_OFFSET (fp
), REG_N_OFFSET (pc
), REG_N_OFFSET (psr
),
55 REG_F_OFFSET (l0a
), REG_F_OFFSET (l1a
), REG_F_OFFSET (l2a
), REG_F_OFFSET (l3a
),
56 REG_F_OFFSET (l4a
), REG_F_OFFSET (l5a
), REG_F_OFFSET (l6a
), REG_F_OFFSET (l7a
),
59 #define REG_ADDRESS(state,regnum) ((char *)(state)+reg_offset[regnum])
61 /* Fetch COUNT contiguous registers from thread STATE starting from REGNUM
62 * Caller knows that the regs handled in one transaction are of same size.
64 #define FETCH_REGS(state, regnum, count) \
65 memcpy (®isters[REGISTER_BYTE (regnum)], \
66 (char *)state+reg_offset[ regnum ], \
69 /* Store COUNT contiguous registers to thread STATE starting from REGNUM */
70 #define STORE_REGS(state, regnum, count) \
71 memcpy ((char *)state+reg_offset[ regnum ], \
72 ®isters[REGISTER_BYTE (regnum)], \
76 * Fetch inferiors registers for gdb.
77 * REGNO specifies which (as gdb views it) register, -1 for all.
81 fetch_inferior_registers (int regno
)
84 thread_state_data_t state
;
85 unsigned int stateCnt
= NS532_COMBINED_STATE_COUNT
;
88 if (!MACH_PORT_VALID (current_thread
))
89 error ("fetch inferior registers: Invalid thread");
91 if (must_suspend_thread
)
92 setup_thread (current_thread
, 1);
94 ret
= thread_get_state (current_thread
,
99 if (ret
!= KERN_SUCCESS
)
100 warning ("fetch_inferior_registers: %s ",
101 mach_error_string (ret
));
103 /* It may be more effective to store validate all of them,
104 * since we fetched them all anyway
106 else if (regno
!= -1)
107 supply_register (regno
, (char *) state
+ reg_offset
[regno
]);
111 for (index
= 0; index
< NUM_REGS
; index
++)
112 supply_register (index
, (char *) state
+ reg_offset
[index
]);
115 if (must_suspend_thread
)
116 setup_thread (current_thread
, 0);
119 /* Store our register values back into the inferior.
120 * If REGNO is -1, do this for all registers.
121 * Otherwise, REGNO specifies which register
123 * On mach3 all registers are always saved in one call.
126 store_inferior_registers (int regno
)
129 thread_state_data_t state
;
130 unsigned int stateCnt
= NS532_COMBINED_STATE_COUNT
;
133 if (!MACH_PORT_VALID (current_thread
))
134 error ("store inferior registers: Invalid thread");
136 if (must_suspend_thread
)
137 setup_thread (current_thread
, 1);
139 /* Fetch the state of the current thread */
140 ret
= thread_get_state (current_thread
,
141 NS532_COMBINED_STATE
,
145 if (ret
!= KERN_SUCCESS
)
147 warning ("store_inferior_registers (get): %s",
148 mach_error_string (ret
));
149 if (must_suspend_thread
)
150 setup_thread (current_thread
, 0);
154 /* move gdb's registers to thread's state
156 * Since we save all registers anyway, save the ones
157 * that gdb thinks are valid (e.g. ignore the regno
162 STORE_REGS (state
, regno
, 1);
166 for (index
= 0; index
< NUM_REGS
; index
++)
167 STORE_REGS (state
, index
, 1);
170 /* Write gdb's current view of register to the thread
172 ret
= thread_set_state (current_thread
,
173 NS532_COMBINED_STATE
,
175 NS532_COMBINED_STATE_COUNT
);
177 if (ret
!= KERN_SUCCESS
)
178 warning ("store_inferior_registers (set): %s",
179 mach_error_string (ret
));
181 if (must_suspend_thread
)
182 setup_thread (current_thread
, 0);