152 lines
3.6 KiB
C
152 lines
3.6 KiB
C
/*-
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* Copyright (c) 2000-2001 Doug Rabson
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* All rights reserved.
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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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <machine/db_machdep.h>
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#include <machine/unwind.h>
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#include <machine/vmparam.h>
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#include <ddb/ddb.h>
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#include <ddb/db_sym.h>
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#include <ddb/db_access.h>
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#include <ddb/db_variables.h>
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#include <ddb/db_output.h>
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int db_md_set_watchpoint(db_expr_t addr, db_expr_t size);
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int db_md_clr_watchpoint(db_expr_t addr, db_expr_t size);
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void db_md_list_watchpoints(void);
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void
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db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count,
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char *modif)
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{
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struct unw_regstate rs;
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struct trapframe *tf;
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const char *name;
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db_expr_t offset;
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uint64_t bsp, cfm, ip, pfs, reg, sp;
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c_db_sym_t sym;
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int args, error, i;
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tf = &ddb_regs;
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error = unw_create(&rs, tf);
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while (!error && count--) {
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error = unw_get_cfm(&rs, &cfm);
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if (!error)
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error = unw_get_bsp(&rs, &bsp);
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if (!error)
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error = unw_get_ip(&rs, &ip);
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if (!error)
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error = unw_get_sp(&rs, &sp);
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if (error)
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break;
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args = (cfm >> 7) & 0x7f;
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if (args > 8)
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args = 8;
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error = unw_step(&rs);
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if (!error) {
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error = unw_get_cfm(&rs, &pfs);
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if (!error) {
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i = (pfs & 0x7f) - ((pfs >> 7) & 0x7f);
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if (args > i)
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args = i;
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}
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}
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sym = db_search_symbol(ip, DB_STGY_ANY, &offset);
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db_symbol_values(sym, &name, NULL);
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db_printf("%s(", name);
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if (bsp >= IA64_RR_BASE(5)) {
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for (i = 0; i < args; i++) {
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if ((bsp & 0x1ff) == 0x1f8)
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bsp += 8;
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db_read_bytes(bsp, sizeof(reg), (void*)®);
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if (i > 0)
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db_printf(", ");
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db_printf("0x%lx", reg);
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bsp += 8;
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}
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} else
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db_printf("...");
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db_printf(") at ");
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db_printsym(ip, DB_STGY_PROC);
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db_printf("\n");
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if (error != EOVERFLOW)
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continue;
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if (sp < IA64_RR_BASE(5))
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break;
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tf = (struct trapframe *)(sp + 16);
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if ((tf->tf_flags & FRAME_SYSCALL) != 0 ||
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tf->tf_special.iip < IA64_RR_BASE(5))
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break;
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/* XXX ask if we should unwind across the trapframe. */
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db_printf("--- trapframe at %p\n", tf);
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unw_delete(&rs);
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error = unw_create(&rs, tf);
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}
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unw_delete(&rs);
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}
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void
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db_print_backtrace(void)
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{
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}
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int
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db_md_set_watchpoint(addr, size)
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db_expr_t addr;
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db_expr_t size;
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{
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return (-1);
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}
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int
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db_md_clr_watchpoint(addr, size)
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db_expr_t addr;
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db_expr_t size;
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{
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return (-1);
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}
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void
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db_md_list_watchpoints()
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{
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return;
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}
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