mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
dccbb60975
This commit includes gdb_assert.h in common-defs.h and removes all other inclusions. gdb/ 2014-08-07 Gary Benson <gbenson@redhat.com> * common/common-defs.h: Include gdb_assert.h. * aarch64-tdep.c: Do not include gdb_assert.h. * addrmap.c: Likewise. * aix-thread.c: Likewise. * alpha-linux-tdep.c: Likewise. * alpha-mdebug-tdep.c: Likewise. * alphanbsd-tdep.c: Likewise. * amd64-nat.c: Likewise. * amd64-tdep.c: Likewise. * amd64bsd-nat.c: Likewise. * amd64fbsd-nat.c: Likewise. * amd64fbsd-tdep.c: Likewise. * amd64nbsd-nat.c: Likewise. * amd64nbsd-tdep.c: Likewise. * amd64obsd-nat.c: Likewise. * amd64obsd-tdep.c: Likewise. * arch-utils.c: Likewise. * arm-tdep.c: Likewise. * armbsd-tdep.c: Likewise. * auxv.c: Likewise. * bcache.c: Likewise. * bfin-tdep.c: Likewise. * blockframe.c: Likewise. * breakpoint.c: Likewise. * bsd-kvm.c: Likewise. * bsd-uthread.c: Likewise. * buildsym.c: Likewise. * c-exp.y: Likewise. * c-lang.c: Likewise. * charset.c: Likewise. * cleanups.c: Likewise. * cli-out.c: Likewise. * cli/cli-decode.c: Likewise. * cli/cli-dump.c: Likewise. * cli/cli-logging.c: Likewise. * cli/cli-script.c: Likewise. * cli/cli-utils.c: Likewise. * coffread.c: Likewise. * common/common-utils.c: Likewise. * common/queue.h: Likewise. * common/signals.c: Likewise. * common/vec.h: Likewise. * complaints.c: Likewise. * completer.c: Likewise. * corelow.c: Likewise. * cp-abi.c: Likewise. * cp-name-parser.y: Likewise. * cp-namespace.c: Likewise. * cp-support.c: Likewise. * cris-tdep.c: Likewise. * dbxread.c: Likewise. * dictionary.c: Likewise. * doublest.c: Likewise. * dsrec.c: Likewise. * dummy-frame.c: Likewise. * dwarf2-frame-tailcall.c: Likewise. * dwarf2-frame.c: Likewise. * dwarf2expr.c: Likewise. * dwarf2loc.c: Likewise. * dwarf2read.c: Likewise. * eval.c: Likewise. * event-loop.c: Likewise. * exceptions.c: Likewise. * expprint.c: Likewise. * f-valprint.c: Likewise. * fbsd-nat.c: Likewise. * findvar.c: Likewise. * frame-unwind.c: Likewise. * frame.c: Likewise. * frv-tdep.c: Likewise. * gcore.c: Likewise. * gdb-dlfcn.c: Likewise. * gdb_bfd.c: Likewise. * gdbarch.c: Likewise. * gdbarch.sh: Likewise. * gdbtypes.c: Likewise. * gnu-nat.c: Likewise. * gnu-v3-abi.c: Likewise. * go-lang.c: Likewise. * guile/scm-exception.c: Likewise. * guile/scm-gsmob.c: Likewise. * guile/scm-lazy-string.c: Likewise. * guile/scm-math.c: Likewise. * guile/scm-pretty-print.c: Likewise. * guile/scm-safe-call.c: Likewise. * guile/scm-utils.c: Likewise. * guile/scm-value.c: Likewise. * h8300-tdep.c: Likewise. * hppa-hpux-nat.c: Likewise. * hppa-tdep.c: Likewise. * hppanbsd-tdep.c: Likewise. * hppaobsd-tdep.c: Likewise. * i386-darwin-nat.c: Likewise. * i386-darwin-tdep.c: Likewise. * i386-nto-tdep.c: Likewise. * i386-tdep.c: Likewise. * i386bsd-nat.c: Likewise. * i386fbsd-tdep.c: Likewise. * i386gnu-nat.c: Likewise. * i386nbsd-tdep.c: Likewise. * i386obsd-tdep.c: Likewise. * i387-tdep.c: Likewise. * ia64-libunwind-tdep.c: Likewise. * ia64-tdep.c: Likewise. * inf-ptrace.c: Likewise. * inf-ttrace.c: Likewise. * infcall.c: Likewise. * infcmd.c: Likewise. * infrun.c: Likewise. * inline-frame.c: Likewise. * interps.c: Likewise. * jv-lang.c: Likewise. * jv-typeprint.c: Likewise. * linux-fork.c: Likewise. * linux-nat.c: Likewise. * linux-thread-db.c: Likewise. * m32c-tdep.c: Likewise. * m32r-linux-nat.c: Likewise. * m32r-tdep.c: Likewise. * m68k-tdep.c: Likewise. * m68kbsd-nat.c: Likewise. * m68kbsd-tdep.c: Likewise. * m88k-tdep.c: Likewise. * machoread.c: Likewise. * macroexp.c: Likewise. * macrotab.c: Likewise. * maint.c: Likewise. * mdebugread.c: Likewise. * memory-map.c: Likewise. * mep-tdep.c: Likewise. * mi/mi-common.c: Likewise. * microblaze-tdep.c: Likewise. * mingw-hdep.c: Likewise. * mips-linux-nat.c: Likewise. * mips-linux-tdep.c: Likewise. * mips-tdep.c: Likewise. * mips64obsd-tdep.c: Likewise. * mipsnbsd-tdep.c: Likewise. * mn10300-linux-tdep.c: Likewise. * mn10300-tdep.c: Likewise. * moxie-tdep.c: Likewise. * mt-tdep.c: Likewise. * nat/linux-btrace.c: Likewise. * nat/linux-osdata.c: Likewise. * nat/linux-ptrace.c: Likewise. * nat/mips-linux-watch.c: Likewise. * nios2-linux-tdep.c: Likewise. * nios2-tdep.c: Likewise. * objc-lang.c: Likewise. * objfiles.c: Likewise. * obsd-nat.c: Likewise. * opencl-lang.c: Likewise. * osabi.c: Likewise. * parse.c: Likewise. * ppc-linux-nat.c: Likewise. * ppc-sysv-tdep.c: Likewise. * ppcfbsd-nat.c: Likewise. * ppcfbsd-tdep.c: Likewise. * ppcnbsd-nat.c: Likewise. * ppcnbsd-tdep.c: Likewise. * ppcobsd-nat.c: Likewise. * ppcobsd-tdep.c: Likewise. * printcmd.c: Likewise. * procfs.c: Likewise. * prologue-value.c: Likewise. * psymtab.c: Likewise. * python/py-lazy-string.c: Likewise. * python/py-value.c: Likewise. * regcache.c: Likewise. * reggroups.c: Likewise. * registry.c: Likewise. * remote-sim.c: Likewise. * remote.c: Likewise. * rs6000-aix-tdep.c: Likewise. * rs6000-tdep.c: Likewise. * s390-linux-tdep.c: Likewise. * score-tdep.c: Likewise. * ser-base.c: Likewise. * ser-mingw.c: Likewise. * sh-tdep.c: Likewise. * sh64-tdep.c: Likewise. * solib-darwin.c: Likewise. * solib-spu.c: Likewise. * solib-svr4.c: Likewise. * source.c: Likewise. * sparc-nat.c: Likewise. * sparc-sol2-tdep.c: Likewise. * sparc-tdep.c: Likewise. * sparc64-sol2-tdep.c: Likewise. * sparc64-tdep.c: Likewise. * sparc64fbsd-tdep.c: Likewise. * sparc64nbsd-tdep.c: Likewise. * sparc64obsd-tdep.c: Likewise. * sparcnbsd-tdep.c: Likewise. * sparcobsd-tdep.c: Likewise. * spu-multiarch.c: Likewise. * spu-tdep.c: Likewise. * stabsread.c: Likewise. * stack.c: Likewise. * symfile.c: Likewise. * symtab.c: Likewise. * target-descriptions.c: Likewise. * target-memory.c: Likewise. * target.c: Likewise. * tic6x-linux-tdep.c: Likewise. * tic6x-tdep.c: Likewise. * tilegx-linux-nat.c: Likewise. * tilegx-tdep.c: Likewise. * top.c: Likewise. * tramp-frame.c: Likewise. * tui/tui-out.c: Likewise. * tui/tui-winsource.c: Likewise. * ui-out.c: Likewise. * user-regs.c: Likewise. * utils.c: Likewise. * v850-tdep.c: Likewise. * valops.c: Likewise. * value.c: Likewise. * varobj.c: Likewise. * vax-nat.c: Likewise. * xml-syscall.c: Likewise. * xml-tdesc.c: Likewise. * xstormy16-tdep.c: Likewise. * xtensa-linux-nat.c: Likewise. * xtensa-tdep.c: Likewise. gdb/gdbserver/ 2014-08-07 Gary Benson <gbenson@redhat.com> * server.h: Do not include gdb_assert.h.
403 lines
10 KiB
C
403 lines
10 KiB
C
/* BSD Kernel Data Access Library (libkvm) interface.
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Copyright (C) 2004-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "cli/cli-cmds.h"
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#include "command.h"
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#include "frame.h"
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#include "regcache.h"
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#include "target.h"
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#include "value.h"
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#include "gdbcore.h" /* for get_exec_file */
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#include "gdbthread.h"
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#include <fcntl.h>
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#include <kvm.h>
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#ifdef HAVE_NLIST_H
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#include <nlist.h>
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#endif
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#include <paths.h>
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#include "readline/readline.h"
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include "bsd-kvm.h"
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/* Kernel memory device file. */
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static const char *bsd_kvm_corefile;
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/* Kernel memory interface descriptor. */
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static kvm_t *core_kd;
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/* Address of process control block. */
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static struct pcb *bsd_kvm_paddr;
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/* Pointer to architecture-specific function that reconstructs the
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register state from PCB and supplies it to REGCACHE. */
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static int (*bsd_kvm_supply_pcb)(struct regcache *regcache, struct pcb *pcb);
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/* Target ops for libkvm interface. */
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static struct target_ops bsd_kvm_ops;
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/* This is the ptid we use while we're connected to kvm. The kvm
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target currently doesn't export any view of the running processes,
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so this represents the kernel task. */
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static ptid_t bsd_kvm_ptid;
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static void
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bsd_kvm_open (const char *arg, int from_tty)
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{
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char errbuf[_POSIX2_LINE_MAX];
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char *execfile = NULL;
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kvm_t *temp_kd;
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char *filename = NULL;
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target_preopen (from_tty);
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if (arg)
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{
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char *temp;
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filename = tilde_expand (arg);
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if (filename[0] != '/')
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{
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temp = concat (current_directory, "/", filename, (char *)NULL);
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xfree (filename);
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filename = temp;
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}
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}
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execfile = get_exec_file (0);
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temp_kd = kvm_openfiles (execfile, filename, NULL,
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write_files ? O_RDWR : O_RDONLY, errbuf);
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if (temp_kd == NULL)
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error (("%s"), errbuf);
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bsd_kvm_corefile = filename;
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unpush_target (&bsd_kvm_ops);
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core_kd = temp_kd;
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push_target (&bsd_kvm_ops);
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add_thread_silent (bsd_kvm_ptid);
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inferior_ptid = bsd_kvm_ptid;
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target_fetch_registers (get_current_regcache (), -1);
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reinit_frame_cache ();
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print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
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}
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static void
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bsd_kvm_close (struct target_ops *self)
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{
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if (core_kd)
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{
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if (kvm_close (core_kd) == -1)
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warning (("%s"), kvm_geterr(core_kd));
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core_kd = NULL;
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}
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inferior_ptid = null_ptid;
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delete_thread_silent (bsd_kvm_ptid);
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}
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static LONGEST
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bsd_kvm_xfer_memory (CORE_ADDR addr, ULONGEST len,
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gdb_byte *readbuf, const gdb_byte *writebuf)
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{
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ssize_t nbytes = len;
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if (readbuf)
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nbytes = kvm_read (core_kd, addr, readbuf, nbytes);
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if (writebuf && nbytes > 0)
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nbytes = kvm_write (core_kd, addr, writebuf, nbytes);
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return nbytes;
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}
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static enum target_xfer_status
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bsd_kvm_xfer_partial (struct target_ops *ops, enum target_object object,
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const char *annex, gdb_byte *readbuf,
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const gdb_byte *writebuf,
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ULONGEST offset, ULONGEST len, ULONGEST *xfered_len)
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{
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switch (object)
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{
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case TARGET_OBJECT_MEMORY:
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{
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LONGEST ret = bsd_kvm_xfer_memory (offset, len, readbuf, writebuf);
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if (ret < 0)
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return TARGET_XFER_E_IO;
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else if (ret == 0)
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return TARGET_XFER_EOF;
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else
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{
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*xfered_len = (ULONGEST) ret;
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return TARGET_XFER_OK;
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}
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}
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default:
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return TARGET_XFER_E_IO;
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}
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}
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static void
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bsd_kvm_files_info (struct target_ops *ops)
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{
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if (bsd_kvm_corefile && strcmp (bsd_kvm_corefile, _PATH_MEM) != 0)
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printf_filtered (_("\tUsing the kernel crash dump %s.\n"),
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bsd_kvm_corefile);
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else
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printf_filtered (_("\tUsing the currently running kernel.\n"));
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}
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/* Fetch process control block at address PADDR. */
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static int
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bsd_kvm_fetch_pcb (struct regcache *regcache, struct pcb *paddr)
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{
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struct pcb pcb;
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if (kvm_read (core_kd, (unsigned long) paddr, &pcb, sizeof pcb) == -1)
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error (("%s"), kvm_geterr (core_kd));
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gdb_assert (bsd_kvm_supply_pcb);
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return bsd_kvm_supply_pcb (regcache, &pcb);
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}
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static void
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bsd_kvm_fetch_registers (struct target_ops *ops,
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struct regcache *regcache, int regnum)
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{
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struct nlist nl[2];
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if (bsd_kvm_paddr)
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{
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bsd_kvm_fetch_pcb (regcache, bsd_kvm_paddr);
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return;
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}
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/* On dumping core, BSD kernels store the faulting context (PCB)
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in the variable "dumppcb". */
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memset (nl, 0, sizeof nl);
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nl[0].n_name = "_dumppcb";
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if (kvm_nlist (core_kd, nl) == -1)
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error (("%s"), kvm_geterr (core_kd));
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if (nl[0].n_value != 0)
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{
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/* Found dumppcb. If it contains a valid context, return
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immediately. */
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if (bsd_kvm_fetch_pcb (regcache, (struct pcb *) nl[0].n_value))
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return;
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}
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/* Traditional BSD kernels have a process proc0 that should always
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be present. The address of proc0's PCB is stored in the variable
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"proc0paddr". */
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memset (nl, 0, sizeof nl);
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nl[0].n_name = "_proc0paddr";
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if (kvm_nlist (core_kd, nl) == -1)
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error (("%s"), kvm_geterr (core_kd));
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if (nl[0].n_value != 0)
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{
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struct pcb *paddr;
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/* Found proc0paddr. */
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if (kvm_read (core_kd, nl[0].n_value, &paddr, sizeof paddr) == -1)
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error (("%s"), kvm_geterr (core_kd));
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bsd_kvm_fetch_pcb (regcache, paddr);
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return;
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}
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#ifdef HAVE_STRUCT_THREAD_TD_PCB
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/* In FreeBSD kernels for 5.0-RELEASE and later, the PCB no longer
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lives in `struct proc' but in `struct thread'. The `struct
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thread' for the initial thread for proc0 can be found in the
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variable "thread0". */
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memset (nl, 0, sizeof nl);
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nl[0].n_name = "_thread0";
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if (kvm_nlist (core_kd, nl) == -1)
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error (("%s"), kvm_geterr (core_kd));
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if (nl[0].n_value != 0)
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{
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struct pcb *paddr;
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/* Found thread0. */
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nl[0].n_value += offsetof (struct thread, td_pcb);
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if (kvm_read (core_kd, nl[0].n_value, &paddr, sizeof paddr) == -1)
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error (("%s"), kvm_geterr (core_kd));
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bsd_kvm_fetch_pcb (regcache, paddr);
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return;
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}
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#endif
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/* i18n: PCB == "Process Control Block". */
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error (_("Cannot find a valid PCB"));
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}
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/* Kernel memory interface commands. */
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struct cmd_list_element *bsd_kvm_cmdlist;
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static void
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bsd_kvm_cmd (char *arg, int fromtty)
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{
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/* ??? Should this become an alias for "target kvm"? */
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}
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#ifndef HAVE_STRUCT_THREAD_TD_PCB
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static void
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bsd_kvm_proc_cmd (char *arg, int fromtty)
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{
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CORE_ADDR addr;
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if (arg == NULL)
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error_no_arg (_("proc address"));
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if (core_kd == NULL)
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error (_("No kernel memory image."));
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addr = parse_and_eval_address (arg);
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#ifdef HAVE_STRUCT_LWP
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addr += offsetof (struct lwp, l_addr);
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#else
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addr += offsetof (struct proc, p_addr);
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#endif
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if (kvm_read (core_kd, addr, &bsd_kvm_paddr, sizeof bsd_kvm_paddr) == -1)
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error (("%s"), kvm_geterr (core_kd));
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target_fetch_registers (get_current_regcache (), -1);
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reinit_frame_cache ();
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print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
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}
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#endif
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static void
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bsd_kvm_pcb_cmd (char *arg, int fromtty)
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{
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if (arg == NULL)
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/* i18n: PCB == "Process Control Block". */
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error_no_arg (_("pcb address"));
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if (core_kd == NULL)
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error (_("No kernel memory image."));
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bsd_kvm_paddr = (struct pcb *)(u_long) parse_and_eval_address (arg);
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target_fetch_registers (get_current_regcache (), -1);
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reinit_frame_cache ();
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print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
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}
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static int
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bsd_kvm_thread_alive (struct target_ops *ops,
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ptid_t ptid)
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{
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return 1;
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}
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static char *
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bsd_kvm_pid_to_str (struct target_ops *ops, ptid_t ptid)
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{
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static char buf[64];
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xsnprintf (buf, sizeof buf, "<kvm>");
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return buf;
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}
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static int
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bsd_kvm_return_one (struct target_ops *ops)
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{
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return 1;
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}
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/* Add the libkvm interface to the list of all possible targets and
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register CUPPLY_PCB as the architecture-specific process control
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block interpreter. */
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void
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bsd_kvm_add_target (int (*supply_pcb)(struct regcache *, struct pcb *))
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{
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gdb_assert (bsd_kvm_supply_pcb == NULL);
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bsd_kvm_supply_pcb = supply_pcb;
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bsd_kvm_ops.to_shortname = "kvm";
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bsd_kvm_ops.to_longname = _("Kernel memory interface");
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bsd_kvm_ops.to_doc = _("Use a kernel virtual memory image as a target.\n\
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Optionally specify the filename of a core dump.");
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bsd_kvm_ops.to_open = bsd_kvm_open;
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bsd_kvm_ops.to_close = bsd_kvm_close;
|
||
bsd_kvm_ops.to_fetch_registers = bsd_kvm_fetch_registers;
|
||
bsd_kvm_ops.to_xfer_partial = bsd_kvm_xfer_partial;
|
||
bsd_kvm_ops.to_files_info = bsd_kvm_files_info;
|
||
bsd_kvm_ops.to_thread_alive = bsd_kvm_thread_alive;
|
||
bsd_kvm_ops.to_pid_to_str = bsd_kvm_pid_to_str;
|
||
bsd_kvm_ops.to_stratum = process_stratum;
|
||
bsd_kvm_ops.to_has_memory = bsd_kvm_return_one;
|
||
bsd_kvm_ops.to_has_stack = bsd_kvm_return_one;
|
||
bsd_kvm_ops.to_has_registers = bsd_kvm_return_one;
|
||
bsd_kvm_ops.to_magic = OPS_MAGIC;
|
||
|
||
add_target (&bsd_kvm_ops);
|
||
|
||
add_prefix_cmd ("kvm", class_obscure, bsd_kvm_cmd, _("\
|
||
Generic command for manipulating the kernel memory interface."),
|
||
&bsd_kvm_cmdlist, "kvm ", 0, &cmdlist);
|
||
|
||
#ifndef HAVE_STRUCT_THREAD_TD_PCB
|
||
add_cmd ("proc", class_obscure, bsd_kvm_proc_cmd,
|
||
_("Set current context from proc address"), &bsd_kvm_cmdlist);
|
||
#endif
|
||
add_cmd ("pcb", class_obscure, bsd_kvm_pcb_cmd,
|
||
/* i18n: PCB == "Process Control Block". */
|
||
_("Set current context from pcb address"), &bsd_kvm_cmdlist);
|
||
|
||
/* Some notes on the ptid usage on this target.
|
||
|
||
The pid field represents the kvm inferior instance. Currently,
|
||
we don't support multiple kvm inferiors, but we start at 1
|
||
anyway. The lwp field is set to != 0, in case the core wants to
|
||
refer to the whole kvm inferior with ptid(1,0,0).
|
||
|
||
If kvm is made to export running processes as gdb threads,
|
||
the following form can be used:
|
||
ptid (1, 1, 0) -> kvm inferior 1, in kernel
|
||
ptid (1, 1, 1) -> kvm inferior 1, process 1
|
||
ptid (1, 1, 2) -> kvm inferior 1, process 2
|
||
ptid (1, 1, n) -> kvm inferior 1, process n */
|
||
|
||
bsd_kvm_ptid = ptid_build (1, 1, 0);
|
||
}
|