2 * Copyright (c) 2015 The FreeBSD Foundation
5 * This software was developed by Semihalf under
6 * the sponsorship of the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
35 #include <machine/pcb.h>
37 #include <ddb/db_sym.h>
39 #include <machine/armreg.h>
40 #include <machine/debug_monitor.h>
49 db_md_list_watchpoints()
52 dbg_show_watchpoint();
56 db_md_clr_watchpoint(db_expr_t addr, db_expr_t size)
59 return (dbg_remove_watchpoint(addr, size, DBG_FROM_EL1));
63 db_md_set_watchpoint(db_expr_t addr, db_expr_t size)
66 return (dbg_setup_watchpoint(addr, size, DBG_FROM_EL1,
71 db_unwind_frame(struct unwind_state *frame)
73 uint64_t fp = frame->fp;
78 frame->sp = fp + 0x10;
79 /* FP to previous frame (X29) */
80 frame->fp = *(uint64_t *)(fp);
82 frame->pc = *(uint64_t *)(fp + 8) - 4;
87 db_stack_trace_cmd(struct unwind_state *frame)
95 uint64_t pc = frame->pc;
98 ret = db_unwind_frame(frame);
102 sym = db_search_symbol(pc, DB_STGY_ANY, &offset);
103 if (sym == C_DB_SYM_NULL) {
107 db_symbol_values(sym, &name, &value);
109 db_printf("%s() at ", name);
110 db_printsym(frame->pc, DB_STGY_PROC);
113 db_printf("\t pc = 0x%016lx lr = 0x%016lx\n", pc,
115 db_printf("\t sp = 0x%016lx fp = 0x%016lx\n", frame->sp,
117 /* TODO: Show some more registers */
123 db_trace_thread(struct thread *thr, int count)
125 struct unwind_state frame;
128 if (thr != curthread) {
129 ctx = kdb_thr_ctx(thr);
131 frame.sp = (uint64_t)ctx->pcb_sp;
132 frame.fp = (uint64_t)ctx->pcb_x[29];
133 frame.pc = (uint64_t)ctx->pcb_x[30];
134 db_stack_trace_cmd(&frame);
143 struct unwind_state frame;
146 __asm __volatile("mov %0, sp" : "=&r" (sp));
149 frame.fp = (uint64_t)__builtin_frame_address(0);
150 frame.pc = (uint64_t)db_trace_self;
151 db_stack_trace_cmd(&frame);