Remove now unused files:
db_elf.c, db_kld.c: The new KDB backend supports both at the same time. db_sysctl.c: The functionality has been moved to sys/kern/subr_kdb.c. db_trap.c: The DDB entry point has been moved to sys/ddb/db_main.c.
This commit is contained in:
Marcel Moolenaar
parent
1ca618fcaa
commit
412e1faf02
421
sys/ddb/db_elf.c
421
sys/ddb/db_elf.c
@ -1,421 +0,0 @@
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/* $NetBSD: db_elf.c,v 1.4 1998/05/03 18:49:54 thorpej Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ddb.h"
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#ifdef DDB_NOKLDSYM
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#include <sys/param.h>
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#include <sys/systm.h>
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#ifdef __i386__
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#include <machine/bootinfo.h>
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#endif
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#include <ddb/ddb.h>
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#include <ddb/db_sym.h>
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#include <machine/elf.h>
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#ifndef _ALIGNED_POINTER
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#define _ALIGNED_POINTER(ptr, type) 1
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#endif
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static char *db_elf_find_strtab(db_symtab_t *);
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#define STAB_TO_SYMSTART(stab) ((Elf_Sym *)((stab)->start))
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#define STAB_TO_SYMEND(stab) ((Elf_Sym *)((stab)->end))
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#define STAB_TO_EHDR(stab) ((Elf_Ehdr *)((stab)->private))
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#define STAB_TO_SHDR(stab, e) ((Elf_Shdr *)((stab)->private + (e)->e_shoff))
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void X_db_sym_init(void *symtab, void *esymtab, char *name);
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/*
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* Find the symbol table and strings; tell ddb about them.
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*/
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void
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X_db_sym_init(symtab, esymtab, name)
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void *symtab; /* pointer to start of symbol table */
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void *esymtab; /* pointer to end of string table,
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for checking - rounded up to integer
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boundary */
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char *name;
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{
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Elf_Ehdr *elf;
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Elf_Shdr *shp;
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Elf_Sym *symp, *symtab_start, *symtab_end;
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char *strtab_start, *strtab_end;
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int i;
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if (_ALIGNED_POINTER(symtab, long) == 0) {
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printf("DDB: bad symbol table start address %p\n", symtab);
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return;
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}
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symtab_start = symtab_end = NULL;
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strtab_start = strtab_end = NULL;
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/*
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* The format of the symbols loaded by the boot program is:
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*
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* Elf exec header
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* first section header
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* . . .
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* . . .
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* last section header
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* first symbol or string table section
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* . . .
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* . . .
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* last symbol or string table section
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*/
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/*
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* Validate the Elf header.
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*/
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elf = (Elf_Ehdr *)symtab;
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if (elf->e_ident[EI_MAG0] != ELFMAG0
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|| elf->e_ident[EI_MAG1] != ELFMAG1
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|| elf->e_ident[EI_MAG2] != ELFMAG2
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|| elf->e_ident[EI_MAG3] != ELFMAG3)
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goto badheader;
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if (!ELF_MACHINE_OK(elf->e_machine))
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goto badheader;
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/*
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* We need to avoid the section header string table (small string
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* table which names the sections). We do this by assuming that
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* the following two conditions will be true:
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*
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* (1) .shstrtab will be smaller than one page.
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* (2) .strtab will be larger than one page.
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*
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* When we encounter what we think is the .shstrtab, we change
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* its section type Elf_sht_null so that it will be ignored
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* later.
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*/
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shp = (Elf_Shdr *)((char*)symtab + elf->e_shoff);
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for (i = 0; i < elf->e_shnum; i++) {
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if (shp[i].sh_addr || i == elf->e_shstrndx)
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continue;
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switch (shp[i].sh_type) {
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case SHT_STRTAB:
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if (shp[i].sh_size < PAGE_SIZE) {
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shp[i].sh_type = SHT_NULL;
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continue;
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}
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if (strtab_start != NULL)
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goto multiple_strtab;
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strtab_start = (char *)symtab + shp[i].sh_offset;
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strtab_end = (char *)symtab + shp[i].sh_offset +
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shp[i].sh_size;
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break;
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case SHT_SYMTAB:
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if (symtab_start != NULL)
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goto multiple_symtab;
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symtab_start = (Elf_Sym *)((char*)symtab + shp[i].sh_offset);
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symtab_end = (Elf_Sym *)((char*)symtab + shp[i].sh_offset +
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shp[i].sh_size);
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break;
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default:
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/* Ignore all other sections. */
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break;
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}
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}
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/*
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* Now, sanity check the symbols against the string table.
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*/
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if (symtab_start == NULL || strtab_start == NULL ||
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_ALIGNED_POINTER(symtab_start, long) == 0 ||
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_ALIGNED_POINTER(strtab_start, long) == 0)
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goto badheader;
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for (symp = symtab_start; symp < symtab_end; symp++)
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if (symp->st_name + strtab_start > strtab_end)
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goto badheader;
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/*
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* Link the symbol table into the debugger.
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*/
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db_add_symbol_table((char *)symtab_start,
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(char *)symtab_end, name, (char *)symtab);
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printf("[ preserving %lu bytes of %s symbol table ]\n",
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(u_long)roundup(((char*)esymtab - (char*)symtab), sizeof(u_long)), name);
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return;
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badheader:
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printf("[ %s symbol table not valid ]\n", name);
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return;
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multiple_strtab:
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printf("[ %s has multiple string tables ]\n", name);
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return;
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multiple_symtab:
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printf("[ %s has multiple symbol tables ]\n", name);
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return;
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}
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/*
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* Internal helper function - return a pointer to the string table
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* for the current symbol table.
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*/
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static char *
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db_elf_find_strtab(stab)
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db_symtab_t *stab;
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{
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Elf_Ehdr *elf = STAB_TO_EHDR(stab);
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Elf_Shdr *shp = STAB_TO_SHDR(stab, elf);
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int i;
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for (i = 0; i < elf->e_shnum; i++) {
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if (shp[i].sh_type == SHT_STRTAB
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&& !shp[i].sh_addr && i != elf->e_shstrndx)
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return (stab->private + shp[i].sh_offset);
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}
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return (NULL);
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}
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/*
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* Lookup the symbol with the given name.
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*/
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c_db_sym_t
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X_db_lookup(stab, symstr)
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db_symtab_t *stab;
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const char *symstr;
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{
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Elf_Sym *symp, *symtab_start, *symtab_end;
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char *strtab;
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symtab_start = STAB_TO_SYMSTART(stab);
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symtab_end = STAB_TO_SYMEND(stab);
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strtab = db_elf_find_strtab(stab);
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if (strtab == NULL)
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return ((db_sym_t)0);
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for (symp = symtab_start; symp < symtab_end; symp++) {
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if (symp->st_name != 0 &&
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db_eqname(strtab + symp->st_name, symstr, 0))
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return ((db_sym_t)symp);
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}
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return ((db_sym_t)0);
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}
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/*
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* Search for the symbol with the given address (matching within the
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* provided threshold).
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*/
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c_db_sym_t
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X_db_search_symbol(symtab, off, strategy, diffp)
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db_symtab_t *symtab;
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db_addr_t off;
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db_strategy_t strategy;
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db_expr_t *diffp; /* in/out */
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{
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Elf_Sym *rsymp, *symp, *symtab_start, *symtab_end;
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db_expr_t diff = *diffp;
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symtab_start = STAB_TO_SYMSTART(symtab);
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symtab_end = STAB_TO_SYMEND(symtab);
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rsymp = NULL;
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for (symp = symtab_start; symp < symtab_end; symp++) {
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if (symp->st_name == 0)
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continue;
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if (ELF_ST_TYPE(symp->st_info) != STT_OBJECT &&
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ELF_ST_TYPE(symp->st_info) != STT_FUNC &&
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ELF_ST_TYPE(symp->st_info) != STT_NOTYPE)
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continue;
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if (off >= symp->st_value) {
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if ((off - symp->st_value) < diff) {
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diff = off - symp->st_value;
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rsymp = symp;
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if (diff == 0) {
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if (strategy == DB_STGY_PROC &&
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ELF_ST_TYPE(symp->st_info) ==
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STT_FUNC &&
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ELF_ST_BIND(symp->st_info) !=
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STB_LOCAL)
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break;
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if (strategy == DB_STGY_ANY &&
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ELF_ST_BIND(symp->st_info) !=
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STB_LOCAL)
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break;
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}
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} else if ((off - symp->st_value) == diff) {
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if (rsymp == NULL)
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rsymp = symp;
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else if (ELF_ST_BIND(rsymp->st_info) ==
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STB_LOCAL &&
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ELF_ST_BIND(symp->st_info) !=
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STB_LOCAL) {
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/* pick the external symbol */
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rsymp = symp;
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}
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}
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}
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}
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if (rsymp == NULL)
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*diffp = off;
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else
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*diffp = diff;
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return ((db_sym_t)rsymp);
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}
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/*
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* Return the name and value for a symbol.
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*/
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void
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X_db_symbol_values(symtab, sym, namep, valuep)
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db_symtab_t *symtab;
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c_db_sym_t sym;
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const char **namep;
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db_expr_t *valuep;
|
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{
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const Elf_Sym *symp = (const Elf_Sym *)sym;
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char *strtab;
|
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|
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if (namep) {
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strtab = db_elf_find_strtab(symtab);
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if (strtab == NULL)
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*namep = NULL;
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else
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*namep = strtab + symp->st_name;
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}
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if (valuep)
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*valuep = symp->st_value;
|
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}
|
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|
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/*
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* Return the file and line number of the current program counter
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* if we can find the appropriate debugging symbol.
|
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*/
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boolean_t
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X_db_line_at_pc(symtab, cursym, filename, linenum, off)
|
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db_symtab_t *symtab;
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c_db_sym_t cursym;
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char **filename;
|
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int *linenum;
|
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db_expr_t off;
|
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{
|
||||
|
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/*
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* XXX We don't support this (yet).
|
||||
*/
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return (FALSE);
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}
|
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|
||||
/*
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* Returns the number of arguments to a function and their
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* names if we can find the appropriate debugging symbol.
|
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*/
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boolean_t
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X_db_sym_numargs(symtab, cursym, nargp, argnamep)
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db_symtab_t *symtab;
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c_db_sym_t cursym;
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int *nargp;
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char **argnamep;
|
||||
{
|
||||
|
||||
/*
|
||||
* XXX We don't support this (yet).
|
||||
*/
|
||||
return (FALSE);
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||||
}
|
||||
|
||||
/*
|
||||
* Initialization routine for Elf files.
|
||||
*/
|
||||
|
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#ifdef __i386__
|
||||
void *ksym_start, *ksym_end;
|
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#else
|
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extern void *ksym_start, *ksym_end;
|
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#endif
|
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|
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void
|
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kdb_init(void)
|
||||
{
|
||||
static Elf_Ehdr elf;
|
||||
static Elf_Shdr sh[2];
|
||||
|
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#ifdef __i386__
|
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ksym_start = (void *)bootinfo.bi_symtab;
|
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ksym_end = (void *)bootinfo.bi_esymtab;
|
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#endif
|
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if (ksym_end <= ksym_start)
|
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return;
|
||||
|
||||
/*
|
||||
* The FreeBSD boot program doesn't actually load any headers, so
|
||||
* fake just enough for the routines in this file to work.
|
||||
*/
|
||||
elf.e_ident[EI_MAG0] = ELFMAG0;
|
||||
elf.e_ident[EI_MAG1] = ELFMAG1;
|
||||
elf.e_ident[EI_MAG2] = ELFMAG2;
|
||||
elf.e_ident[EI_MAG3] = ELFMAG3;
|
||||
elf.e_machine = ELF_ARCH;
|
||||
elf.e_shoff = (uintptr_t)(void *)&sh[0] - (uintptr_t)(void *)&elf;
|
||||
sh[0].sh_type = SHT_SYMTAB;
|
||||
sh[0].sh_offset = (uintptr_t)ksym_start + sizeof(long) -
|
||||
(uintptr_t)(void *)&elf;
|
||||
sh[0].sh_size = *(int *)ksym_start;
|
||||
sh[1].sh_type = SHT_STRTAB;
|
||||
sh[1].sh_offset = sh[0].sh_offset + sh[0].sh_size + sizeof(long);
|
||||
sh[1].sh_size = (uintptr_t)ksym_end - (uintptr_t)ksym_start -
|
||||
sizeof(long) - sh[0].sh_size - sizeof(long);
|
||||
elf.e_shstrndx = -1;
|
||||
elf.e_shnum = 2;
|
||||
|
||||
X_db_sym_init(&elf, ksym_end, "kernel");
|
||||
}
|
||||
|
||||
#endif /* DDB_NOKLDSYM */
|
||||
133
sys/ddb/db_kld.c
133
sys/ddb/db_kld.c
@ -1,133 +0,0 @@
|
||||
/*
|
||||
* Mach Operating System
|
||||
* Copyright (c) 1991,1990 Carnegie Mellon University
|
||||
* All Rights Reserved.
|
||||
*
|
||||
* Permission to use, copy, modify and distribute this software and its
|
||||
* documentation is hereby granted, provided that both the copyright
|
||||
* notice and this permission notice appear in all copies of the
|
||||
* software, derivative works or modified versions, and any portions
|
||||
* thereof, and that both notices appear in supporting documentation.
|
||||
*
|
||||
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
|
||||
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
|
||||
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
||||
*
|
||||
* Carnegie Mellon requests users of this software to return to
|
||||
*
|
||||
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
||||
* School of Computer Science
|
||||
* Carnegie Mellon University
|
||||
* Pittsburgh PA 15213-3890
|
||||
*
|
||||
* any improvements or extensions that they make and grant Carnegie the
|
||||
* rights to redistribute these changes.
|
||||
*
|
||||
* from db_aout.c,v 1.20 1998/06/07 17:09:36 dfr Exp
|
||||
*/
|
||||
/*
|
||||
* Author: David B. Golub, Carnegie Mellon University
|
||||
* Date: 7/90
|
||||
*/
|
||||
/*
|
||||
* Symbol table routines for kld maintained kernels.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include "opt_ddb.h"
|
||||
|
||||
#ifndef DDB_NOKLDSYM
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/linker.h>
|
||||
|
||||
#include <ddb/ddb.h>
|
||||
#include <ddb/db_sym.h>
|
||||
|
||||
c_db_sym_t
|
||||
X_db_lookup(stab, symstr)
|
||||
db_symtab_t *stab;
|
||||
const char * symstr;
|
||||
{
|
||||
c_linker_sym_t sym;
|
||||
|
||||
if (linker_ddb_lookup(symstr, &sym) == 0)
|
||||
return (c_db_sym_t) sym;
|
||||
else
|
||||
return (c_db_sym_t) 0;
|
||||
}
|
||||
|
||||
c_db_sym_t
|
||||
X_db_search_symbol(symtab, off, strategy, diffp)
|
||||
db_symtab_t * symtab;
|
||||
register
|
||||
db_addr_t off;
|
||||
db_strategy_t strategy;
|
||||
db_expr_t *diffp; /* in/out */
|
||||
{
|
||||
c_linker_sym_t sym;
|
||||
long diff;
|
||||
|
||||
if (linker_ddb_search_symbol((caddr_t) off, &sym, &diff) == 0) {
|
||||
*diffp = (db_expr_t) diff;
|
||||
return (c_db_sym_t) sym;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Return the name and value for a symbol.
|
||||
*/
|
||||
void
|
||||
X_db_symbol_values(symtab, dbsym, namep, valuep)
|
||||
db_symtab_t *symtab;
|
||||
c_db_sym_t dbsym;
|
||||
const char **namep;
|
||||
db_expr_t *valuep;
|
||||
{
|
||||
c_linker_sym_t sym = (c_linker_sym_t) dbsym;
|
||||
linker_symval_t symval;
|
||||
|
||||
linker_ddb_symbol_values(sym, &symval);
|
||||
if (namep)
|
||||
*namep = (const char*) symval.name;
|
||||
if (valuep)
|
||||
*valuep = (db_expr_t) symval.value;
|
||||
}
|
||||
|
||||
|
||||
boolean_t
|
||||
X_db_line_at_pc(symtab, cursym, filename, linenum, off)
|
||||
db_symtab_t * symtab;
|
||||
c_db_sym_t cursym;
|
||||
char **filename;
|
||||
int *linenum;
|
||||
db_expr_t off;
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
boolean_t
|
||||
X_db_sym_numargs(symtab, cursym, nargp, argnamep)
|
||||
db_symtab_t * symtab;
|
||||
c_db_sym_t cursym;
|
||||
int *nargp;
|
||||
char **argnamep;
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialization routine for a.out files.
|
||||
*/
|
||||
void
|
||||
kdb_init()
|
||||
{
|
||||
db_add_symbol_table(0, 0, "kernel", 0);
|
||||
}
|
||||
|
||||
#endif /* !DDB_NOKLDSYM */
|
||||
@ -1,77 +0,0 @@
|
||||
/*
|
||||
* db_sysctl.c
|
||||
*
|
||||
* Copyright (c) 2000 Whistle Communications, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Subject to the following obligations and disclaimer of warranty, use and
|
||||
* redistribution of this software, in source or object code forms, with or
|
||||
* without modifications are expressly permitted by Whistle Communications;
|
||||
* provided, however, that:
|
||||
* 1. Any and all reproductions of the source or object code must include the
|
||||
* copyright notice above and the following disclaimer of warranties; and
|
||||
* 2. No rights are granted, in any manner or form, to use Whistle
|
||||
* Communications, Inc. trademarks, including the mark "WHISTLE
|
||||
* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
|
||||
* such appears in the above copyright notice or in the software.
|
||||
*
|
||||
* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
|
||||
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
|
||||
* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
|
||||
* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
|
||||
* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
|
||||
* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
|
||||
* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
|
||||
* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
|
||||
* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
|
||||
* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
||||
* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||||
* THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
|
||||
* OF SUCH DAMAGE.
|
||||
*
|
||||
* Author: Archie Cobbs <archie@whistle.com>
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/sysctl.h>
|
||||
#include <sys/reboot.h>
|
||||
|
||||
#define DESCRIPTION "Set to `ddb' or `gdb' to enter the kernel debugger"
|
||||
#define READ_MODE ""
|
||||
#define MODE_DDB "ddb"
|
||||
#define MODE_GDB "gdb"
|
||||
|
||||
static int
|
||||
sysctl_debug_enter_debugger(SYSCTL_HANDLER_ARGS)
|
||||
{
|
||||
char dmode[64];
|
||||
int error;
|
||||
|
||||
strncpy(dmode, READ_MODE, sizeof(dmode) - 1);
|
||||
dmode[sizeof(dmode) - 1] = '\0';
|
||||
error = sysctl_handle_string(oidp, &dmode[0], sizeof(dmode), req);
|
||||
|
||||
if (error == 0 && req->newptr != NULL) {
|
||||
if (strcmp(dmode, MODE_DDB) == 0)
|
||||
boothowto &= ~RB_GDB;
|
||||
else if (strcmp(dmode, MODE_GDB) == 0)
|
||||
boothowto |= RB_GDB;
|
||||
else
|
||||
return EINVAL;
|
||||
Debugger("debug.enter_debugger");
|
||||
}
|
||||
return error;
|
||||
}
|
||||
|
||||
SYSCTL_PROC(_debug, OID_AUTO, enter_debugger, CTLTYPE_STRING | CTLFLAG_RW,
|
||||
0, 0, sysctl_debug_enter_debugger, "A", DESCRIPTION);
|
||||
|
||||
@ -1,77 +0,0 @@
|
||||
/*
|
||||
* Mach Operating System
|
||||
* Copyright (c) 1991,1990 Carnegie Mellon University
|
||||
* All Rights Reserved.
|
||||
*
|
||||
* Permission to use, copy, modify and distribute this software and its
|
||||
* documentation is hereby granted, provided that both the copyright
|
||||
* notice and this permission notice appear in all copies of the
|
||||
* software, derivative works or modified versions, and any portions
|
||||
* thereof, and that both notices appear in supporting documentation.
|
||||
*
|
||||
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
|
||||
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
|
||||
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
||||
*
|
||||
* Carnegie Mellon requests users of this software to return to
|
||||
*
|
||||
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
||||
* School of Computer Science
|
||||
* Carnegie Mellon University
|
||||
* Pittsburgh PA 15213-3890
|
||||
*
|
||||
* any improvements or extensions that they make and grant Carnegie the
|
||||
* rights to redistribute these changes.
|
||||
*/
|
||||
/*
|
||||
* Author: David B. Golub, Carnegie Mellon University
|
||||
* Date: 7/90
|
||||
*/
|
||||
|
||||
/*
|
||||
* Trap entry point to kernel debugger.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
|
||||
#include <ddb/ddb.h>
|
||||
#include <ddb/db_command.h>
|
||||
|
||||
#include <machine/setjmp.h>
|
||||
|
||||
extern jmp_buf db_jmpbuf;
|
||||
|
||||
void
|
||||
db_trap(type, code)
|
||||
int type, code;
|
||||
{
|
||||
boolean_t bkpt;
|
||||
boolean_t watchpt;
|
||||
|
||||
bkpt = IS_BREAKPOINT_TRAP(type, code);
|
||||
watchpt = IS_WATCHPOINT_TRAP(type, code);
|
||||
|
||||
if (db_stop_at_pc(&bkpt)) {
|
||||
if (db_inst_count) {
|
||||
db_printf("After %d instructions (%d loads, %d stores),\n",
|
||||
db_inst_count, db_load_count, db_store_count);
|
||||
}
|
||||
if (bkpt)
|
||||
db_printf("Breakpoint at\t");
|
||||
else if (watchpt)
|
||||
db_printf("Watchpoint at\t");
|
||||
else
|
||||
db_printf("Stopped at\t");
|
||||
db_dot = PC_REGS(DDB_REGS);
|
||||
if (setjmp(db_jmpbuf) == 0)
|
||||
db_print_loc_and_inst(db_dot);
|
||||
|
||||
db_command_loop();
|
||||
}
|
||||
|
||||
db_restart_at_pc(watchpt);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user