mirror of
https://github.com/opnsense/src.git
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6de3c41534
to fix the build. Obtained from: ABT Systems Ltd X-MFC with: r305771 Sponsored by: The FreeBSD Foundation
133 lines
3.3 KiB
C
133 lines
3.3 KiB
C
/*-
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under
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* the sponsorship of the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "opt_ddb.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/kdb.h>
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#include <machine/pcb.h>
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#include <ddb/ddb.h>
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#include <ddb/db_sym.h>
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#include <machine/armreg.h>
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#include <machine/debug_monitor.h>
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#include <machine/stack.h>
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void
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db_md_list_watchpoints()
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{
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dbg_show_watchpoint();
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}
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int
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db_md_clr_watchpoint(db_expr_t addr, db_expr_t size)
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{
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return (dbg_remove_watchpoint(addr, size, DBG_FROM_EL1));
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}
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int
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db_md_set_watchpoint(db_expr_t addr, db_expr_t size)
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{
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return (dbg_setup_watchpoint(addr, size, DBG_FROM_EL1,
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HW_BREAKPOINT_RW));
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}
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static void
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db_stack_trace_cmd(struct unwind_state *frame)
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{
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c_db_sym_t sym;
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const char *name;
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db_expr_t value;
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db_expr_t offset;
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while (1) {
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uint64_t pc = frame->pc;
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int ret;
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ret = unwind_frame(frame);
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if (ret < 0)
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break;
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sym = db_search_symbol(pc, DB_STGY_ANY, &offset);
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if (sym == C_DB_SYM_NULL) {
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value = 0;
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name = "(null)";
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} else
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db_symbol_values(sym, &name, &value);
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db_printf("%s() at ", name);
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db_printsym(frame->pc, DB_STGY_PROC);
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db_printf("\n");
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db_printf("\t pc = 0x%016lx lr = 0x%016lx\n", pc,
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frame->pc);
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db_printf("\t sp = 0x%016lx fp = 0x%016lx\n", frame->sp,
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frame->fp);
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/* TODO: Show some more registers */
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db_printf("\n");
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}
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}
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int
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db_trace_thread(struct thread *thr, int count)
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{
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struct unwind_state frame;
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struct pcb *ctx;
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if (thr != curthread) {
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ctx = kdb_thr_ctx(thr);
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frame.sp = (uint64_t)ctx->pcb_sp;
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frame.fp = (uint64_t)ctx->pcb_x[29];
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frame.pc = (uint64_t)ctx->pcb_x[30];
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db_stack_trace_cmd(&frame);
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} else
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db_trace_self();
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return (0);
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}
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void
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db_trace_self(void)
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{
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struct unwind_state frame;
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uint64_t sp;
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__asm __volatile("mov %0, sp" : "=&r" (sp));
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frame.sp = sp;
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frame.fp = (uint64_t)__builtin_frame_address(0);
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frame.pc = (uint64_t)db_trace_self;
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db_stack_trace_cmd(&frame);
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}
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