2 * Copyright (c) 2004 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/types.h>
31 #ifndef CROSS_DEBUGGER
32 #include <machine/pcb.h>
33 #include <machine/frame.h>
34 #include <machine/armreg.h>
42 #include <gdbthread.h>
45 #include <frame-unwind.h>
51 kgdb_trgt_core_pcb(u_int cpuid)
53 return (kgdb_trgt_stop_pcb(cpuid, sizeof(struct pcb)));
57 kgdb_trgt_fetch_registers(int regno __unused)
59 #ifndef CROSS_DEBUGGER
64 kt = kgdb_thr_lookup_tid(ptid_get_pid(inferior_ptid));
67 if (kvm_read(kvm, kt->pcb, &pcb, sizeof(pcb)) != sizeof(pcb)) {
68 warnx("kvm_read: %s", kvm_geterr(kvm));
69 memset(&pcb, 0, sizeof(pcb));
71 for (i = ARM_A1_REGNUM + 8; i <= ARM_SP_REGNUM; i++) {
72 supply_register(i, (char *)&pcb.un_32.pcb32_r8 +
73 (i - (ARM_A1_REGNUM + 8 )) * 4);
75 if (pcb.un_32.pcb32_sp != 0) {
76 for (i = 0; i < 4; i++) {
77 if (kvm_read(kvm, pcb.un_32.pcb32_sp + (i) * 4,
79 warnx("kvm_read: %s", kvm_geterr(kvm));
82 supply_register(ARM_A1_REGNUM + 4 + i, (char *)®);
84 if (kvm_read(kvm, pcb.un_32.pcb32_sp + 4 * 4, ®, 4) != 4)
85 warnx("kvm_read :%s", kvm_geterr(kvm));
87 supply_register(ARM_PC_REGNUM, (char *)®);
93 kgdb_trgt_store_registers(int regno __unused)
95 fprintf_unfiltered(gdb_stderr, "XXX: %s\n", __func__);
99 kgdb_trgt_new_objfile(struct objfile *objfile)
103 #ifndef CROSS_DEBUGGER
104 struct kgdb_frame_cache {
109 static int kgdb_trgt_frame_offset[26] = {
110 offsetof(struct trapframe, tf_r0),
111 offsetof(struct trapframe, tf_r1),
112 offsetof(struct trapframe, tf_r2),
113 offsetof(struct trapframe, tf_r3),
114 offsetof(struct trapframe, tf_r4),
115 offsetof(struct trapframe, tf_r5),
116 offsetof(struct trapframe, tf_r6),
117 offsetof(struct trapframe, tf_r7),
118 offsetof(struct trapframe, tf_r8),
119 offsetof(struct trapframe, tf_r9),
120 offsetof(struct trapframe, tf_r10),
121 offsetof(struct trapframe, tf_r11),
122 offsetof(struct trapframe, tf_r12),
123 offsetof(struct trapframe, tf_svc_sp),
124 offsetof(struct trapframe, tf_svc_lr),
125 offsetof(struct trapframe, tf_pc),
126 -1, -1, -1, -1, -1, -1, -1, -1, -1,
127 offsetof(struct trapframe, tf_spsr)
130 static struct kgdb_frame_cache *
131 kgdb_trgt_frame_cache(struct frame_info *next_frame, void **this_cache)
133 char buf[MAX_REGISTER_SIZE];
134 struct kgdb_frame_cache *cache;
138 cache = FRAME_OBSTACK_ZALLOC(struct kgdb_frame_cache);
140 frame_unwind_register(next_frame, ARM_SP_REGNUM, buf);
141 cache->sp = extract_unsigned_integer(buf,
142 register_size(current_gdbarch, ARM_SP_REGNUM));
143 frame_unwind_register(next_frame, ARM_FP_REGNUM, buf);
144 cache->fp = extract_unsigned_integer(buf,
145 register_size(current_gdbarch, ARM_FP_REGNUM));
153 kgdb_trgt_trapframe_this_id(struct frame_info *next_frame, void **this_cache,
154 struct frame_id *this_id)
156 struct kgdb_frame_cache *cache;
158 cache = kgdb_trgt_frame_cache(next_frame, this_cache);
159 *this_id = frame_id_build(cache->fp, 0);
163 kgdb_trgt_trapframe_prev_register(struct frame_info *next_frame,
164 void **this_cache, int regnum, int *optimizedp, enum lval_type *lvalp,
165 CORE_ADDR *addrp, int *realnump, void *valuep)
167 char dummy_valuep[MAX_REGISTER_SIZE];
168 struct kgdb_frame_cache *cache;
170 int is_undefined = 0;
172 regsz = register_size(current_gdbarch, regnum);
175 valuep = dummy_valuep;
176 memset(valuep, 0, regsz);
182 ofs = (regnum >= 0 && regnum <= ARM_PS_REGNUM)
183 ? kgdb_trgt_frame_offset[regnum] : -1;
187 cache = kgdb_trgt_frame_cache(next_frame, this_cache);
189 if (is_undef && (regnum == ARM_SP_REGNUM || regnum == ARM_PC_REGNUM)) {
190 *addrp = cache->sp + offsetof(struct trapframe, tf_spsr);
191 target_read_memory(*addrp, valuep, regsz);
193 ofs = kgdb_trgt_frame_offset[ARM_SP_REGNUM];
196 *addrp = cache->sp + ofs;
197 *lvalp = lval_memory;
198 target_read_memory(*addrp, valuep, regsz);
201 *addrp = *(unsigned int *)valuep + (regnum == ARM_SP_REGNUM ?
203 target_read_memory(*addrp, valuep, regsz);
208 static const struct frame_unwind kgdb_trgt_trapframe_unwind = {
210 &kgdb_trgt_trapframe_this_id,
211 &kgdb_trgt_trapframe_prev_register
215 const struct frame_unwind *
216 kgdb_trgt_trapframe_sniffer(struct frame_info *next_frame)
218 #ifndef CROSS_DEBUGGER
222 pc = frame_pc_unwind(next_frame);
224 find_pc_partial_function(pc, &pname, NULL, NULL);
229 if (!strcmp(pname, "undefinedinstruction"))
231 if (strcmp(pname, "Laddress_exception_entry") == 0 ||
232 strcmp(pname, "undefined_entry") == 0 ||
233 strcmp(pname, "exception_exit") == 0 ||
234 strcmp(pname, "Laddress_exception_msg") == 0 ||
235 strcmp(pname, "irq_entry") == 0)
236 return (&kgdb_trgt_trapframe_unwind);
237 if (!strcmp(pname, "undefinedinstruction"))