mirror of
https://sourceware.org/git/binutils-gdb.git
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268a13a5a3
This is the next patch in the ongoing series to move gdbsever to the top level. This patch just renames the "common" directory. The idea is to do this move in two parts: first rename the directory (this patch), then move the directory to the top. This approach makes the patches a bit more tractable. I chose the name "gdbsupport" for the directory. However, as this patch was largely written by sed, we could pick a new name without too much difficulty. Tested by the buildbot. gdb/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * contrib/ari/gdb_ari.sh: Change common to gdbsupport. * configure: Rebuild. * configure.ac: Change common to gdbsupport. * gdbsupport: Rename from common. * acinclude.m4: Change common to gdbsupport. * Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES) (HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to gdbsupport. * aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c, amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c, amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c, amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c, amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c, arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c, arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c, arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c, arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c, auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h, btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c, charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c, cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c, coff-pe-read.c, command.h, compile/compile-c-support.c, compile/compile-c.h, compile/compile-cplus-symbols.c, compile/compile-cplus-types.c, compile/compile-cplus.h, compile/compile-loc2c.c, compile/compile.c, completer.c, completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c, cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c, darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c, disasm.h, dtrace-probe.c, dwarf-index-cache.c, dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c, dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c, event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c, features/aarch64-core.c, features/aarch64-fpu.c, features/aarch64-pauth.c, features/aarch64-sve.c, features/i386/32bit-avx.c, features/i386/32bit-avx512.c, features/i386/32bit-core.c, features/i386/32bit-linux.c, features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c, features/i386/32bit-segments.c, features/i386/32bit-sse.c, features/i386/64bit-avx.c, features/i386/64bit-avx512.c, features/i386/64bit-core.c, features/i386/64bit-linux.c, features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c, features/i386/64bit-segments.c, features/i386/64bit-sse.c, features/i386/x32-core.c, features/riscv/32bit-cpu.c, features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c, features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c, features/riscv/64bit-fpu.c, features/tic6x-c6xp.c, features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h, findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h, gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c, gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c, go32-nat.c, guile/guile.c, guile/scm-ports.c, guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c, i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c, i386-linux-tdep.c, i386-tdep.c, i387-tdep.c, ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c, inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h, inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h, inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c, linux-tdep.c, linux-thread-db.c, location.c, machoread.c, macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h, mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h, minsyms.c, mips-linux-tdep.c, namespace.h, nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h, nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c, nat/amd64-linux-siginfo.c, nat/fork-inferior.c, nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c, nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c, nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h, nat/linux-waitpid.c, nat/mips-linux-watch.c, nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c, nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c, nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h, obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c, parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c, procfs.c, producer.c, progspace.h, psymtab.h, python/py-framefilter.c, python/py-inferior.c, python/py-ref.h, python/py-type.c, python/python.c, record-btrace.c, record-full.c, record.c, record.h, regcache-dump.c, regcache.c, regcache.h, remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c, riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c, selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c, ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c, source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c, stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h, symtab.c, symtab.h, target-descriptions.c, target-descriptions.h, target-memory.c, target.c, target.h, target/waitstatus.c, target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c, top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c, tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h, unittests/array-view-selftests.c, unittests/child-path-selftests.c, unittests/cli-utils-selftests.c, unittests/common-utils-selftests.c, unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c, unittests/format_pieces-selftests.c, unittests/function-view-selftests.c, unittests/lookup_name_info-selftests.c, unittests/memory-map-selftests.c, unittests/memrange-selftests.c, unittests/mkdir-recursive-selftests.c, unittests/observable-selftests.c, unittests/offset-type-selftests.c, unittests/optional-selftests.c, unittests/parse-connection-spec-selftests.c, unittests/ptid-selftests.c, unittests/rsp-low-selftests.c, unittests/scoped_fd-selftests.c, unittests/scoped_mmap-selftests.c, unittests/scoped_restore-selftests.c, unittests/string_view-selftests.c, unittests/style-selftests.c, unittests/tracepoint-selftests.c, unittests/unpack-selftests.c, unittests/utils-selftests.c, unittests/xml-utils-selftests.c, utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c, value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c, xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c, xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport. gdb/gdbserver/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * configure: Rebuild. * configure.ac: Change common to gdbsupport. * acinclude.m4: Change common to gdbsupport. * Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS) (version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change common to gdbsupport. * ax.c, event-loop.c, fork-child.c, gdb_proc_service.h, gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c, inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c, linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c, linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c, linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h, nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c, server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h, thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change common to gdbsupport.
2901 lines
83 KiB
C
2901 lines
83 KiB
C
/* Print values for GNU debugger GDB.
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Copyright (C) 1986-2019 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 "frame.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "value.h"
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#include "language.h"
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#include "c-lang.h"
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#include "expression.h"
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#include "gdbcore.h"
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#include "gdbcmd.h"
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#include "target.h"
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#include "breakpoint.h"
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#include "demangle.h"
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#include "gdb-demangle.h"
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#include "valprint.h"
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#include "annotate.h"
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#include "symfile.h" /* for overlay functions */
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#include "objfiles.h" /* ditto */
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#include "completer.h" /* for completion functions */
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#include "ui-out.h"
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#include "block.h"
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#include "disasm.h"
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#include "target-float.h"
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#include "observable.h"
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#include "solist.h"
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#include "parser-defs.h"
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#include "charset.h"
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#include "arch-utils.h"
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#include "cli/cli-utils.h"
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#include "cli/cli-option.h"
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#include "cli/cli-script.h"
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#include "cli/cli-style.h"
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#include "gdbsupport/format.h"
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#include "source.h"
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#include "gdbsupport/byte-vector.h"
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#include "gdbsupport/gdb_optional.h"
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/* Last specified output format. */
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static char last_format = 0;
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/* Last specified examination size. 'b', 'h', 'w' or `q'. */
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static char last_size = 'w';
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/* Last specified count for the 'x' command. */
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static int last_count;
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/* Default address to examine next, and associated architecture. */
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static struct gdbarch *next_gdbarch;
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static CORE_ADDR next_address;
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/* Number of delay instructions following current disassembled insn. */
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static int branch_delay_insns;
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/* Last address examined. */
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static CORE_ADDR last_examine_address;
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/* Contents of last address examined.
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This is not valid past the end of the `x' command! */
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static value_ref_ptr last_examine_value;
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/* Largest offset between a symbolic value and an address, that will be
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printed as `0x1234 <symbol+offset>'. */
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static unsigned int max_symbolic_offset = UINT_MAX;
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static void
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show_max_symbolic_offset (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file,
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_("The largest offset that will be "
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"printed in <symbol+1234> form is %s.\n"),
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value);
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}
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/* Append the source filename and linenumber of the symbol when
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printing a symbolic value as `<symbol at filename:linenum>' if set. */
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static int print_symbol_filename = 0;
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static void
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show_print_symbol_filename (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Printing of source filename and "
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"line number with <symbol> is %s.\n"),
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value);
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}
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/* Number of auto-display expression currently being displayed.
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So that we can disable it if we get a signal within it.
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-1 when not doing one. */
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static int current_display_number;
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struct display
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{
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/* Chain link to next auto-display item. */
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struct display *next;
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/* The expression as the user typed it. */
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char *exp_string;
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/* Expression to be evaluated and displayed. */
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expression_up exp;
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/* Item number of this auto-display item. */
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int number;
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/* Display format specified. */
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struct format_data format;
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/* Program space associated with `block'. */
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struct program_space *pspace;
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/* Innermost block required by this expression when evaluated. */
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const struct block *block;
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/* Status of this display (enabled or disabled). */
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int enabled_p;
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};
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/* Chain of expressions whose values should be displayed
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automatically each time the program stops. */
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static struct display *display_chain;
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static int display_number;
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/* Walk the following statement or block through all displays.
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ALL_DISPLAYS_SAFE does so even if the statement deletes the current
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display. */
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#define ALL_DISPLAYS(B) \
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for (B = display_chain; B; B = B->next)
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#define ALL_DISPLAYS_SAFE(B,TMP) \
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for (B = display_chain; \
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B ? (TMP = B->next, 1): 0; \
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B = TMP)
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/* Prototypes for local functions. */
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static void do_one_display (struct display *);
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/* Decode a format specification. *STRING_PTR should point to it.
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OFORMAT and OSIZE are used as defaults for the format and size
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if none are given in the format specification.
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If OSIZE is zero, then the size field of the returned value
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should be set only if a size is explicitly specified by the
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user.
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The structure returned describes all the data
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found in the specification. In addition, *STRING_PTR is advanced
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past the specification and past all whitespace following it. */
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static struct format_data
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decode_format (const char **string_ptr, int oformat, int osize)
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{
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struct format_data val;
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const char *p = *string_ptr;
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val.format = '?';
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val.size = '?';
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val.count = 1;
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val.raw = 0;
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if (*p == '-')
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{
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val.count = -1;
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p++;
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}
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if (*p >= '0' && *p <= '9')
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val.count *= atoi (p);
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while (*p >= '0' && *p <= '9')
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p++;
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/* Now process size or format letters that follow. */
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while (1)
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{
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if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
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val.size = *p++;
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else if (*p == 'r')
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{
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val.raw = 1;
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p++;
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}
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else if (*p >= 'a' && *p <= 'z')
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val.format = *p++;
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else
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break;
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}
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*string_ptr = skip_spaces (p);
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/* Set defaults for format and size if not specified. */
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if (val.format == '?')
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{
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if (val.size == '?')
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{
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/* Neither has been specified. */
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val.format = oformat;
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val.size = osize;
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}
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else
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/* If a size is specified, any format makes a reasonable
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default except 'i'. */
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val.format = oformat == 'i' ? 'x' : oformat;
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}
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else if (val.size == '?')
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switch (val.format)
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{
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case 'a':
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/* Pick the appropriate size for an address. This is deferred
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until do_examine when we know the actual architecture to use.
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A special size value of 'a' is used to indicate this case. */
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val.size = osize ? 'a' : osize;
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break;
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case 'f':
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/* Floating point has to be word or giantword. */
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if (osize == 'w' || osize == 'g')
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val.size = osize;
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else
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/* Default it to giantword if the last used size is not
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appropriate. */
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val.size = osize ? 'g' : osize;
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break;
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case 'c':
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/* Characters default to one byte. */
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val.size = osize ? 'b' : osize;
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break;
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case 's':
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/* Display strings with byte size chars unless explicitly
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specified. */
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val.size = '\0';
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break;
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default:
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/* The default is the size most recently specified. */
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val.size = osize;
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}
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return val;
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}
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/* Print value VAL on stream according to OPTIONS.
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Do not end with a newline.
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SIZE is the letter for the size of datum being printed.
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This is used to pad hex numbers so they line up. SIZE is 0
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for print / output and set for examine. */
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static void
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print_formatted (struct value *val, int size,
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const struct value_print_options *options,
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struct ui_file *stream)
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{
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struct type *type = check_typedef (value_type (val));
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int len = TYPE_LENGTH (type);
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if (VALUE_LVAL (val) == lval_memory)
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next_address = value_address (val) + len;
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if (size)
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{
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switch (options->format)
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{
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case 's':
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{
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struct type *elttype = value_type (val);
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next_address = (value_address (val)
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+ val_print_string (elttype, NULL,
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value_address (val), -1,
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stream, options) * len);
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}
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return;
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case 'i':
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/* We often wrap here if there are long symbolic names. */
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wrap_here (" ");
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next_address = (value_address (val)
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+ gdb_print_insn (get_type_arch (type),
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value_address (val), stream,
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&branch_delay_insns));
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return;
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}
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}
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if (options->format == 0 || options->format == 's'
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|| TYPE_CODE (type) == TYPE_CODE_REF
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|| TYPE_CODE (type) == TYPE_CODE_ARRAY
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|| TYPE_CODE (type) == TYPE_CODE_STRING
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||
|| TYPE_CODE (type) == TYPE_CODE_STRUCT
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||
|| TYPE_CODE (type) == TYPE_CODE_UNION
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|| TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
|
||
value_print (val, stream, options);
|
||
else
|
||
/* User specified format, so don't look to the type to tell us
|
||
what to do. */
|
||
val_print_scalar_formatted (type,
|
||
value_embedded_offset (val),
|
||
val,
|
||
options, size, stream);
|
||
}
|
||
|
||
/* Return builtin floating point type of same length as TYPE.
|
||
If no such type is found, return TYPE itself. */
|
||
static struct type *
|
||
float_type_from_length (struct type *type)
|
||
{
|
||
struct gdbarch *gdbarch = get_type_arch (type);
|
||
const struct builtin_type *builtin = builtin_type (gdbarch);
|
||
|
||
if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_float))
|
||
type = builtin->builtin_float;
|
||
else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_double))
|
||
type = builtin->builtin_double;
|
||
else if (TYPE_LENGTH (type) == TYPE_LENGTH (builtin->builtin_long_double))
|
||
type = builtin->builtin_long_double;
|
||
|
||
return type;
|
||
}
|
||
|
||
/* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
|
||
according to OPTIONS and SIZE on STREAM. Formats s and i are not
|
||
supported at this level. */
|
||
|
||
void
|
||
print_scalar_formatted (const gdb_byte *valaddr, struct type *type,
|
||
const struct value_print_options *options,
|
||
int size, struct ui_file *stream)
|
||
{
|
||
struct gdbarch *gdbarch = get_type_arch (type);
|
||
unsigned int len = TYPE_LENGTH (type);
|
||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||
|
||
/* String printing should go through val_print_scalar_formatted. */
|
||
gdb_assert (options->format != 's');
|
||
|
||
/* If the value is a pointer, and pointers and addresses are not the
|
||
same, then at this point, the value's length (in target bytes) is
|
||
gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
|
||
if (TYPE_CODE (type) == TYPE_CODE_PTR)
|
||
len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT;
|
||
|
||
/* If we are printing it as unsigned, truncate it in case it is actually
|
||
a negative signed value (e.g. "print/u (short)-1" should print 65535
|
||
(if shorts are 16 bits) instead of 4294967295). */
|
||
if (options->format != 'c'
|
||
&& (options->format != 'd' || TYPE_UNSIGNED (type)))
|
||
{
|
||
if (len < TYPE_LENGTH (type) && byte_order == BFD_ENDIAN_BIG)
|
||
valaddr += TYPE_LENGTH (type) - len;
|
||
}
|
||
|
||
if (size != 0 && (options->format == 'x' || options->format == 't'))
|
||
{
|
||
/* Truncate to fit. */
|
||
unsigned newlen;
|
||
switch (size)
|
||
{
|
||
case 'b':
|
||
newlen = 1;
|
||
break;
|
||
case 'h':
|
||
newlen = 2;
|
||
break;
|
||
case 'w':
|
||
newlen = 4;
|
||
break;
|
||
case 'g':
|
||
newlen = 8;
|
||
break;
|
||
default:
|
||
error (_("Undefined output size \"%c\"."), size);
|
||
}
|
||
if (newlen < len && byte_order == BFD_ENDIAN_BIG)
|
||
valaddr += len - newlen;
|
||
len = newlen;
|
||
}
|
||
|
||
/* Historically gdb has printed floats by first casting them to a
|
||
long, and then printing the long. PR cli/16242 suggests changing
|
||
this to using C-style hex float format. */
|
||
gdb::byte_vector converted_float_bytes;
|
||
if (TYPE_CODE (type) == TYPE_CODE_FLT
|
||
&& (options->format == 'o'
|
||
|| options->format == 'x'
|
||
|| options->format == 't'
|
||
|| options->format == 'z'
|
||
|| options->format == 'd'
|
||
|| options->format == 'u'))
|
||
{
|
||
LONGEST val_long = unpack_long (type, valaddr);
|
||
converted_float_bytes.resize (TYPE_LENGTH (type));
|
||
store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type),
|
||
byte_order, val_long);
|
||
valaddr = converted_float_bytes.data ();
|
||
}
|
||
|
||
/* Printing a non-float type as 'f' will interpret the data as if it were
|
||
of a floating-point type of the same length, if that exists. Otherwise,
|
||
the data is printed as integer. */
|
||
char format = options->format;
|
||
if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT)
|
||
{
|
||
type = float_type_from_length (type);
|
||
if (TYPE_CODE (type) != TYPE_CODE_FLT)
|
||
format = 0;
|
||
}
|
||
|
||
switch (format)
|
||
{
|
||
case 'o':
|
||
print_octal_chars (stream, valaddr, len, byte_order);
|
||
break;
|
||
case 'd':
|
||
print_decimal_chars (stream, valaddr, len, true, byte_order);
|
||
break;
|
||
case 'u':
|
||
print_decimal_chars (stream, valaddr, len, false, byte_order);
|
||
break;
|
||
case 0:
|
||
if (TYPE_CODE (type) != TYPE_CODE_FLT)
|
||
{
|
||
print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type),
|
||
byte_order);
|
||
break;
|
||
}
|
||
/* FALLTHROUGH */
|
||
case 'f':
|
||
print_floating (valaddr, type, stream);
|
||
break;
|
||
|
||
case 't':
|
||
print_binary_chars (stream, valaddr, len, byte_order, size > 0);
|
||
break;
|
||
case 'x':
|
||
print_hex_chars (stream, valaddr, len, byte_order, size > 0);
|
||
break;
|
||
case 'z':
|
||
print_hex_chars (stream, valaddr, len, byte_order, true);
|
||
break;
|
||
case 'c':
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
LONGEST val_long = unpack_long (type, valaddr);
|
||
|
||
opts.format = 0;
|
||
if (TYPE_UNSIGNED (type))
|
||
type = builtin_type (gdbarch)->builtin_true_unsigned_char;
|
||
else
|
||
type = builtin_type (gdbarch)->builtin_true_char;
|
||
|
||
value_print (value_from_longest (type, val_long), stream, &opts);
|
||
}
|
||
break;
|
||
|
||
case 'a':
|
||
{
|
||
CORE_ADDR addr = unpack_pointer (type, valaddr);
|
||
|
||
print_address (gdbarch, addr, stream);
|
||
}
|
||
break;
|
||
|
||
default:
|
||
error (_("Undefined output format \"%c\"."), format);
|
||
}
|
||
}
|
||
|
||
/* Specify default address for `x' command.
|
||
The `info lines' command uses this. */
|
||
|
||
void
|
||
set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
|
||
|
||
next_gdbarch = gdbarch;
|
||
next_address = addr;
|
||
|
||
/* Make address available to the user as $_. */
|
||
set_internalvar (lookup_internalvar ("_"),
|
||
value_from_pointer (ptr_type, addr));
|
||
}
|
||
|
||
/* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
|
||
after LEADIN. Print nothing if no symbolic name is found nearby.
|
||
Optionally also print source file and line number, if available.
|
||
DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
|
||
or to interpret it as a possible C++ name and convert it back to source
|
||
form. However note that DO_DEMANGLE can be overridden by the specific
|
||
settings of the demangle and asm_demangle variables. Returns
|
||
non-zero if anything was printed; zero otherwise. */
|
||
|
||
int
|
||
print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr,
|
||
struct ui_file *stream,
|
||
int do_demangle, const char *leadin)
|
||
{
|
||
std::string name, filename;
|
||
int unmapped = 0;
|
||
int offset = 0;
|
||
int line = 0;
|
||
|
||
if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset,
|
||
&filename, &line, &unmapped))
|
||
return 0;
|
||
|
||
fputs_filtered (leadin, stream);
|
||
if (unmapped)
|
||
fputs_filtered ("<*", stream);
|
||
else
|
||
fputs_filtered ("<", stream);
|
||
fputs_styled (name.c_str (), function_name_style.style (), stream);
|
||
if (offset != 0)
|
||
fprintf_filtered (stream, "+%u", (unsigned int) offset);
|
||
|
||
/* Append source filename and line number if desired. Give specific
|
||
line # of this addr, if we have it; else line # of the nearest symbol. */
|
||
if (print_symbol_filename && !filename.empty ())
|
||
{
|
||
fputs_filtered (line == -1 ? " in " : " at ", stream);
|
||
fputs_styled (filename.c_str (), file_name_style.style (), stream);
|
||
if (line != -1)
|
||
fprintf_filtered (stream, ":%d", line);
|
||
}
|
||
if (unmapped)
|
||
fputs_filtered ("*>", stream);
|
||
else
|
||
fputs_filtered (">", stream);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* See valprint.h. */
|
||
|
||
int
|
||
build_address_symbolic (struct gdbarch *gdbarch,
|
||
CORE_ADDR addr, /* IN */
|
||
int do_demangle, /* IN */
|
||
std::string *name, /* OUT */
|
||
int *offset, /* OUT */
|
||
std::string *filename, /* OUT */
|
||
int *line, /* OUT */
|
||
int *unmapped) /* OUT */
|
||
{
|
||
struct bound_minimal_symbol msymbol;
|
||
struct symbol *symbol;
|
||
CORE_ADDR name_location = 0;
|
||
struct obj_section *section = NULL;
|
||
const char *name_temp = "";
|
||
|
||
/* Let's say it is mapped (not unmapped). */
|
||
*unmapped = 0;
|
||
|
||
/* Determine if the address is in an overlay, and whether it is
|
||
mapped. */
|
||
if (overlay_debugging)
|
||
{
|
||
section = find_pc_overlay (addr);
|
||
if (pc_in_unmapped_range (addr, section))
|
||
{
|
||
*unmapped = 1;
|
||
addr = overlay_mapped_address (addr, section);
|
||
}
|
||
}
|
||
|
||
/* First try to find the address in the symbol table, then
|
||
in the minsyms. Take the closest one. */
|
||
|
||
/* This is defective in the sense that it only finds text symbols. So
|
||
really this is kind of pointless--we should make sure that the
|
||
minimal symbols have everything we need (by changing that we could
|
||
save some memory, but for many debug format--ELF/DWARF or
|
||
anything/stabs--it would be inconvenient to eliminate those minimal
|
||
symbols anyway). */
|
||
msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
|
||
symbol = find_pc_sect_function (addr, section);
|
||
|
||
if (symbol)
|
||
{
|
||
/* If this is a function (i.e. a code address), strip out any
|
||
non-address bits. For instance, display a pointer to the
|
||
first instruction of a Thumb function as <function>; the
|
||
second instruction will be <function+2>, even though the
|
||
pointer is <function+3>. This matches the ISA behavior. */
|
||
addr = gdbarch_addr_bits_remove (gdbarch, addr);
|
||
|
||
name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol));
|
||
if (do_demangle || asm_demangle)
|
||
name_temp = SYMBOL_PRINT_NAME (symbol);
|
||
else
|
||
name_temp = SYMBOL_LINKAGE_NAME (symbol);
|
||
}
|
||
|
||
if (msymbol.minsym != NULL
|
||
&& MSYMBOL_HAS_SIZE (msymbol.minsym)
|
||
&& MSYMBOL_SIZE (msymbol.minsym) == 0
|
||
&& MSYMBOL_TYPE (msymbol.minsym) != mst_text
|
||
&& MSYMBOL_TYPE (msymbol.minsym) != mst_text_gnu_ifunc
|
||
&& MSYMBOL_TYPE (msymbol.minsym) != mst_file_text)
|
||
msymbol.minsym = NULL;
|
||
|
||
if (msymbol.minsym != NULL)
|
||
{
|
||
if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
|
||
{
|
||
/* If this is a function (i.e. a code address), strip out any
|
||
non-address bits. For instance, display a pointer to the
|
||
first instruction of a Thumb function as <function>; the
|
||
second instruction will be <function+2>, even though the
|
||
pointer is <function+3>. This matches the ISA behavior. */
|
||
if (MSYMBOL_TYPE (msymbol.minsym) == mst_text
|
||
|| MSYMBOL_TYPE (msymbol.minsym) == mst_text_gnu_ifunc
|
||
|| MSYMBOL_TYPE (msymbol.minsym) == mst_file_text
|
||
|| MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline)
|
||
addr = gdbarch_addr_bits_remove (gdbarch, addr);
|
||
|
||
/* The msymbol is closer to the address than the symbol;
|
||
use the msymbol instead. */
|
||
symbol = 0;
|
||
name_location = BMSYMBOL_VALUE_ADDRESS (msymbol);
|
||
if (do_demangle || asm_demangle)
|
||
name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym);
|
||
else
|
||
name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym);
|
||
}
|
||
}
|
||
if (symbol == NULL && msymbol.minsym == NULL)
|
||
return 1;
|
||
|
||
/* If the nearest symbol is too far away, don't print anything symbolic. */
|
||
|
||
/* For when CORE_ADDR is larger than unsigned int, we do math in
|
||
CORE_ADDR. But when we detect unsigned wraparound in the
|
||
CORE_ADDR math, we ignore this test and print the offset,
|
||
because addr+max_symbolic_offset has wrapped through the end
|
||
of the address space back to the beginning, giving bogus comparison. */
|
||
if (addr > name_location + max_symbolic_offset
|
||
&& name_location + max_symbolic_offset > name_location)
|
||
return 1;
|
||
|
||
*offset = addr - name_location;
|
||
|
||
*name = name_temp;
|
||
|
||
if (print_symbol_filename)
|
||
{
|
||
struct symtab_and_line sal;
|
||
|
||
sal = find_pc_sect_line (addr, section, 0);
|
||
|
||
if (sal.symtab)
|
||
{
|
||
*filename = symtab_to_filename_for_display (sal.symtab);
|
||
*line = sal.line;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Print address ADDR symbolically on STREAM.
|
||
First print it as a number. Then perhaps print
|
||
<SYMBOL + OFFSET> after the number. */
|
||
|
||
void
|
||
print_address (struct gdbarch *gdbarch,
|
||
CORE_ADDR addr, struct ui_file *stream)
|
||
{
|
||
fputs_styled (paddress (gdbarch, addr), address_style.style (), stream);
|
||
print_address_symbolic (gdbarch, addr, stream, asm_demangle, " ");
|
||
}
|
||
|
||
/* Return a prefix for instruction address:
|
||
"=> " for current instruction, else " ". */
|
||
|
||
const char *
|
||
pc_prefix (CORE_ADDR addr)
|
||
{
|
||
if (has_stack_frames ())
|
||
{
|
||
struct frame_info *frame;
|
||
CORE_ADDR pc;
|
||
|
||
frame = get_selected_frame (NULL);
|
||
if (get_frame_pc_if_available (frame, &pc) && pc == addr)
|
||
return "=> ";
|
||
}
|
||
return " ";
|
||
}
|
||
|
||
/* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
|
||
controls whether to print the symbolic name "raw" or demangled.
|
||
Return non-zero if anything was printed; zero otherwise. */
|
||
|
||
int
|
||
print_address_demangle (const struct value_print_options *opts,
|
||
struct gdbarch *gdbarch, CORE_ADDR addr,
|
||
struct ui_file *stream, int do_demangle)
|
||
{
|
||
if (opts->addressprint)
|
||
{
|
||
fputs_styled (paddress (gdbarch, addr), address_style.style (), stream);
|
||
print_address_symbolic (gdbarch, addr, stream, do_demangle, " ");
|
||
}
|
||
else
|
||
{
|
||
return print_address_symbolic (gdbarch, addr, stream, do_demangle, "");
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
|
||
/* Find the address of the instruction that is INST_COUNT instructions before
|
||
the instruction at ADDR.
|
||
Since some architectures have variable-length instructions, we can't just
|
||
simply subtract INST_COUNT * INSN_LEN from ADDR. Instead, we use line
|
||
number information to locate the nearest known instruction boundary,
|
||
and disassemble forward from there. If we go out of the symbol range
|
||
during disassembling, we return the lowest address we've got so far and
|
||
set the number of instructions read to INST_READ. */
|
||
|
||
static CORE_ADDR
|
||
find_instruction_backward (struct gdbarch *gdbarch, CORE_ADDR addr,
|
||
int inst_count, int *inst_read)
|
||
{
|
||
/* The vector PCS is used to store instruction addresses within
|
||
a pc range. */
|
||
CORE_ADDR loop_start, loop_end, p;
|
||
std::vector<CORE_ADDR> pcs;
|
||
struct symtab_and_line sal;
|
||
|
||
*inst_read = 0;
|
||
loop_start = loop_end = addr;
|
||
|
||
/* In each iteration of the outer loop, we get a pc range that ends before
|
||
LOOP_START, then we count and store every instruction address of the range
|
||
iterated in the loop.
|
||
If the number of instructions counted reaches INST_COUNT, return the
|
||
stored address that is located INST_COUNT instructions back from ADDR.
|
||
If INST_COUNT is not reached, we subtract the number of counted
|
||
instructions from INST_COUNT, and go to the next iteration. */
|
||
do
|
||
{
|
||
pcs.clear ();
|
||
sal = find_pc_sect_line (loop_start, NULL, 1);
|
||
if (sal.line <= 0)
|
||
{
|
||
/* We reach here when line info is not available. In this case,
|
||
we print a message and just exit the loop. The return value
|
||
is calculated after the loop. */
|
||
printf_filtered (_("No line number information available "
|
||
"for address "));
|
||
wrap_here (" ");
|
||
print_address (gdbarch, loop_start - 1, gdb_stdout);
|
||
printf_filtered ("\n");
|
||
break;
|
||
}
|
||
|
||
loop_end = loop_start;
|
||
loop_start = sal.pc;
|
||
|
||
/* This loop pushes instruction addresses in the range from
|
||
LOOP_START to LOOP_END. */
|
||
for (p = loop_start; p < loop_end;)
|
||
{
|
||
pcs.push_back (p);
|
||
p += gdb_insn_length (gdbarch, p);
|
||
}
|
||
|
||
inst_count -= pcs.size ();
|
||
*inst_read += pcs.size ();
|
||
}
|
||
while (inst_count > 0);
|
||
|
||
/* After the loop, the vector PCS has instruction addresses of the last
|
||
source line we processed, and INST_COUNT has a negative value.
|
||
We return the address at the index of -INST_COUNT in the vector for
|
||
the reason below.
|
||
Let's assume the following instruction addresses and run 'x/-4i 0x400e'.
|
||
Line X of File
|
||
0x4000
|
||
0x4001
|
||
0x4005
|
||
Line Y of File
|
||
0x4009
|
||
0x400c
|
||
=> 0x400e
|
||
0x4011
|
||
find_instruction_backward is called with INST_COUNT = 4 and expected to
|
||
return 0x4001. When we reach here, INST_COUNT is set to -1 because
|
||
it was subtracted by 2 (from Line Y) and 3 (from Line X). The value
|
||
4001 is located at the index 1 of the last iterated line (= Line X),
|
||
which is simply calculated by -INST_COUNT.
|
||
The case when the length of PCS is 0 means that we reached an area for
|
||
which line info is not available. In such case, we return LOOP_START,
|
||
which was the lowest instruction address that had line info. */
|
||
p = pcs.size () > 0 ? pcs[-inst_count] : loop_start;
|
||
|
||
/* INST_READ includes all instruction addresses in a pc range. Need to
|
||
exclude the beginning part up to the address we're returning. That
|
||
is, exclude {0x4000} in the example above. */
|
||
if (inst_count < 0)
|
||
*inst_read += inst_count;
|
||
|
||
return p;
|
||
}
|
||
|
||
/* Backward read LEN bytes of target memory from address MEMADDR + LEN,
|
||
placing the results in GDB's memory from MYADDR + LEN. Returns
|
||
a count of the bytes actually read. */
|
||
|
||
static int
|
||
read_memory_backward (struct gdbarch *gdbarch,
|
||
CORE_ADDR memaddr, gdb_byte *myaddr, int len)
|
||
{
|
||
int errcode;
|
||
int nread; /* Number of bytes actually read. */
|
||
|
||
/* First try a complete read. */
|
||
errcode = target_read_memory (memaddr, myaddr, len);
|
||
if (errcode == 0)
|
||
{
|
||
/* Got it all. */
|
||
nread = len;
|
||
}
|
||
else
|
||
{
|
||
/* Loop, reading one byte at a time until we get as much as we can. */
|
||
memaddr += len;
|
||
myaddr += len;
|
||
for (nread = 0; nread < len; ++nread)
|
||
{
|
||
errcode = target_read_memory (--memaddr, --myaddr, 1);
|
||
if (errcode != 0)
|
||
{
|
||
/* The read was unsuccessful, so exit the loop. */
|
||
printf_filtered (_("Cannot access memory at address %s\n"),
|
||
paddress (gdbarch, memaddr));
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
return nread;
|
||
}
|
||
|
||
/* Returns true if X (which is LEN bytes wide) is the number zero. */
|
||
|
||
static int
|
||
integer_is_zero (const gdb_byte *x, int len)
|
||
{
|
||
int i = 0;
|
||
|
||
while (i < len && x[i] == 0)
|
||
++i;
|
||
return (i == len);
|
||
}
|
||
|
||
/* Find the start address of a string in which ADDR is included.
|
||
Basically we search for '\0' and return the next address,
|
||
but if OPTIONS->PRINT_MAX is smaller than the length of a string,
|
||
we stop searching and return the address to print characters as many as
|
||
PRINT_MAX from the string. */
|
||
|
||
static CORE_ADDR
|
||
find_string_backward (struct gdbarch *gdbarch,
|
||
CORE_ADDR addr, int count, int char_size,
|
||
const struct value_print_options *options,
|
||
int *strings_counted)
|
||
{
|
||
const int chunk_size = 0x20;
|
||
int read_error = 0;
|
||
int chars_read = 0;
|
||
int chars_to_read = chunk_size;
|
||
int chars_counted = 0;
|
||
int count_original = count;
|
||
CORE_ADDR string_start_addr = addr;
|
||
|
||
gdb_assert (char_size == 1 || char_size == 2 || char_size == 4);
|
||
gdb::byte_vector buffer (chars_to_read * char_size);
|
||
while (count > 0 && read_error == 0)
|
||
{
|
||
int i;
|
||
|
||
addr -= chars_to_read * char_size;
|
||
chars_read = read_memory_backward (gdbarch, addr, buffer.data (),
|
||
chars_to_read * char_size);
|
||
chars_read /= char_size;
|
||
read_error = (chars_read == chars_to_read) ? 0 : 1;
|
||
/* Searching for '\0' from the end of buffer in backward direction. */
|
||
for (i = 0; i < chars_read && count > 0 ; ++i, ++chars_counted)
|
||
{
|
||
int offset = (chars_to_read - i - 1) * char_size;
|
||
|
||
if (integer_is_zero (&buffer[offset], char_size)
|
||
|| chars_counted == options->print_max)
|
||
{
|
||
/* Found '\0' or reached print_max. As OFFSET is the offset to
|
||
'\0', we add CHAR_SIZE to return the start address of
|
||
a string. */
|
||
--count;
|
||
string_start_addr = addr + offset + char_size;
|
||
chars_counted = 0;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Update STRINGS_COUNTED with the actual number of loaded strings. */
|
||
*strings_counted = count_original - count;
|
||
|
||
if (read_error != 0)
|
||
{
|
||
/* In error case, STRING_START_ADDR is pointing to the string that
|
||
was last successfully loaded. Rewind the partially loaded string. */
|
||
string_start_addr -= chars_counted * char_size;
|
||
}
|
||
|
||
return string_start_addr;
|
||
}
|
||
|
||
/* Examine data at address ADDR in format FMT.
|
||
Fetch it from memory and print on gdb_stdout. */
|
||
|
||
static void
|
||
do_examine (struct format_data fmt, struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
char format = 0;
|
||
char size;
|
||
int count = 1;
|
||
struct type *val_type = NULL;
|
||
int i;
|
||
int maxelts;
|
||
struct value_print_options opts;
|
||
int need_to_update_next_address = 0;
|
||
CORE_ADDR addr_rewound = 0;
|
||
|
||
format = fmt.format;
|
||
size = fmt.size;
|
||
count = fmt.count;
|
||
next_gdbarch = gdbarch;
|
||
next_address = addr;
|
||
|
||
/* Instruction format implies fetch single bytes
|
||
regardless of the specified size.
|
||
The case of strings is handled in decode_format, only explicit
|
||
size operator are not changed to 'b'. */
|
||
if (format == 'i')
|
||
size = 'b';
|
||
|
||
if (size == 'a')
|
||
{
|
||
/* Pick the appropriate size for an address. */
|
||
if (gdbarch_ptr_bit (next_gdbarch) == 64)
|
||
size = 'g';
|
||
else if (gdbarch_ptr_bit (next_gdbarch) == 32)
|
||
size = 'w';
|
||
else if (gdbarch_ptr_bit (next_gdbarch) == 16)
|
||
size = 'h';
|
||
else
|
||
/* Bad value for gdbarch_ptr_bit. */
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
|
||
if (size == 'b')
|
||
val_type = builtin_type (next_gdbarch)->builtin_int8;
|
||
else if (size == 'h')
|
||
val_type = builtin_type (next_gdbarch)->builtin_int16;
|
||
else if (size == 'w')
|
||
val_type = builtin_type (next_gdbarch)->builtin_int32;
|
||
else if (size == 'g')
|
||
val_type = builtin_type (next_gdbarch)->builtin_int64;
|
||
|
||
if (format == 's')
|
||
{
|
||
struct type *char_type = NULL;
|
||
|
||
/* Search for "char16_t" or "char32_t" types or fall back to 8-bit char
|
||
if type is not found. */
|
||
if (size == 'h')
|
||
char_type = builtin_type (next_gdbarch)->builtin_char16;
|
||
else if (size == 'w')
|
||
char_type = builtin_type (next_gdbarch)->builtin_char32;
|
||
if (char_type)
|
||
val_type = char_type;
|
||
else
|
||
{
|
||
if (size != '\0' && size != 'b')
|
||
warning (_("Unable to display strings with "
|
||
"size '%c', using 'b' instead."), size);
|
||
size = 'b';
|
||
val_type = builtin_type (next_gdbarch)->builtin_int8;
|
||
}
|
||
}
|
||
|
||
maxelts = 8;
|
||
if (size == 'w')
|
||
maxelts = 4;
|
||
if (size == 'g')
|
||
maxelts = 2;
|
||
if (format == 's' || format == 'i')
|
||
maxelts = 1;
|
||
|
||
get_formatted_print_options (&opts, format);
|
||
|
||
if (count < 0)
|
||
{
|
||
/* This is the negative repeat count case.
|
||
We rewind the address based on the given repeat count and format,
|
||
then examine memory from there in forward direction. */
|
||
|
||
count = -count;
|
||
if (format == 'i')
|
||
{
|
||
next_address = find_instruction_backward (gdbarch, addr, count,
|
||
&count);
|
||
}
|
||
else if (format == 's')
|
||
{
|
||
next_address = find_string_backward (gdbarch, addr, count,
|
||
TYPE_LENGTH (val_type),
|
||
&opts, &count);
|
||
}
|
||
else
|
||
{
|
||
next_address = addr - count * TYPE_LENGTH (val_type);
|
||
}
|
||
|
||
/* The following call to print_formatted updates next_address in every
|
||
iteration. In backward case, we store the start address here
|
||
and update next_address with it before exiting the function. */
|
||
addr_rewound = (format == 's'
|
||
? next_address - TYPE_LENGTH (val_type)
|
||
: next_address);
|
||
need_to_update_next_address = 1;
|
||
}
|
||
|
||
/* Print as many objects as specified in COUNT, at most maxelts per line,
|
||
with the address of the next one at the start of each line. */
|
||
|
||
while (count > 0)
|
||
{
|
||
QUIT;
|
||
if (format == 'i')
|
||
fputs_filtered (pc_prefix (next_address), gdb_stdout);
|
||
print_address (next_gdbarch, next_address, gdb_stdout);
|
||
printf_filtered (":");
|
||
for (i = maxelts;
|
||
i > 0 && count > 0;
|
||
i--, count--)
|
||
{
|
||
printf_filtered ("\t");
|
||
/* Note that print_formatted sets next_address for the next
|
||
object. */
|
||
last_examine_address = next_address;
|
||
|
||
/* The value to be displayed is not fetched greedily.
|
||
Instead, to avoid the possibility of a fetched value not
|
||
being used, its retrieval is delayed until the print code
|
||
uses it. When examining an instruction stream, the
|
||
disassembler will perform its own memory fetch using just
|
||
the address stored in LAST_EXAMINE_VALUE. FIXME: Should
|
||
the disassembler be modified so that LAST_EXAMINE_VALUE
|
||
is left with the byte sequence from the last complete
|
||
instruction fetched from memory? */
|
||
last_examine_value
|
||
= release_value (value_at_lazy (val_type, next_address));
|
||
|
||
print_formatted (last_examine_value.get (), size, &opts, gdb_stdout);
|
||
|
||
/* Display any branch delay slots following the final insn. */
|
||
if (format == 'i' && count == 1)
|
||
count += branch_delay_insns;
|
||
}
|
||
printf_filtered ("\n");
|
||
}
|
||
|
||
if (need_to_update_next_address)
|
||
next_address = addr_rewound;
|
||
}
|
||
|
||
static void
|
||
validate_format (struct format_data fmt, const char *cmdname)
|
||
{
|
||
if (fmt.size != 0)
|
||
error (_("Size letters are meaningless in \"%s\" command."), cmdname);
|
||
if (fmt.count != 1)
|
||
error (_("Item count other than 1 is meaningless in \"%s\" command."),
|
||
cmdname);
|
||
if (fmt.format == 'i')
|
||
error (_("Format letter \"%c\" is meaningless in \"%s\" command."),
|
||
fmt.format, cmdname);
|
||
}
|
||
|
||
/* Parse print command format string into *OPTS and update *EXPP.
|
||
CMDNAME should name the current command. */
|
||
|
||
void
|
||
print_command_parse_format (const char **expp, const char *cmdname,
|
||
value_print_options *opts)
|
||
{
|
||
const char *exp = *expp;
|
||
|
||
if (exp && *exp == '/')
|
||
{
|
||
format_data fmt;
|
||
|
||
exp++;
|
||
fmt = decode_format (&exp, last_format, 0);
|
||
validate_format (fmt, cmdname);
|
||
last_format = fmt.format;
|
||
|
||
opts->format = fmt.format;
|
||
opts->raw = fmt.raw;
|
||
}
|
||
else
|
||
{
|
||
opts->format = 0;
|
||
opts->raw = 0;
|
||
}
|
||
|
||
*expp = exp;
|
||
}
|
||
|
||
/* See valprint.h. */
|
||
|
||
void
|
||
print_value (value *val, const value_print_options &opts)
|
||
{
|
||
int histindex = record_latest_value (val);
|
||
|
||
annotate_value_history_begin (histindex, value_type (val));
|
||
|
||
printf_filtered ("$%d = ", histindex);
|
||
|
||
annotate_value_history_value ();
|
||
|
||
print_formatted (val, 0, &opts, gdb_stdout);
|
||
printf_filtered ("\n");
|
||
|
||
annotate_value_history_end ();
|
||
}
|
||
|
||
/* Implementation of the "print" and "call" commands. */
|
||
|
||
static void
|
||
print_command_1 (const char *args, int voidprint)
|
||
{
|
||
struct value *val;
|
||
value_print_options print_opts;
|
||
|
||
get_user_print_options (&print_opts);
|
||
/* Override global settings with explicit options, if any. */
|
||
auto group = make_value_print_options_def_group (&print_opts);
|
||
gdb::option::process_options
|
||
(&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group);
|
||
|
||
print_command_parse_format (&args, "print", &print_opts);
|
||
|
||
const char *exp = args;
|
||
|
||
if (exp != nullptr && *exp)
|
||
{
|
||
expression_up expr = parse_expression (exp);
|
||
val = evaluate_expression (expr.get ());
|
||
}
|
||
else
|
||
val = access_value_history (0);
|
||
|
||
if (voidprint || (val && value_type (val) &&
|
||
TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
|
||
print_value (val, print_opts);
|
||
}
|
||
|
||
/* See valprint.h. */
|
||
|
||
void
|
||
print_command_completer (struct cmd_list_element *ignore,
|
||
completion_tracker &tracker,
|
||
const char *text, const char * /*word*/)
|
||
{
|
||
const auto group = make_value_print_options_def_group (nullptr);
|
||
if (gdb::option::complete_options
|
||
(tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group))
|
||
return;
|
||
|
||
const char *word = advance_to_expression_complete_word_point (tracker, text);
|
||
expression_completer (ignore, tracker, text, word);
|
||
}
|
||
|
||
static void
|
||
print_command (const char *exp, int from_tty)
|
||
{
|
||
print_command_1 (exp, 1);
|
||
}
|
||
|
||
/* Same as print, except it doesn't print void results. */
|
||
static void
|
||
call_command (const char *exp, int from_tty)
|
||
{
|
||
print_command_1 (exp, 0);
|
||
}
|
||
|
||
/* Implementation of the "output" command. */
|
||
|
||
void
|
||
output_command (const char *exp, int from_tty)
|
||
{
|
||
char format = 0;
|
||
struct value *val;
|
||
struct format_data fmt;
|
||
struct value_print_options opts;
|
||
|
||
fmt.size = 0;
|
||
fmt.raw = 0;
|
||
|
||
if (exp && *exp == '/')
|
||
{
|
||
exp++;
|
||
fmt = decode_format (&exp, 0, 0);
|
||
validate_format (fmt, "output");
|
||
format = fmt.format;
|
||
}
|
||
|
||
expression_up expr = parse_expression (exp);
|
||
|
||
val = evaluate_expression (expr.get ());
|
||
|
||
annotate_value_begin (value_type (val));
|
||
|
||
get_formatted_print_options (&opts, format);
|
||
opts.raw = fmt.raw;
|
||
print_formatted (val, fmt.size, &opts, gdb_stdout);
|
||
|
||
annotate_value_end ();
|
||
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
static void
|
||
set_command (const char *exp, int from_tty)
|
||
{
|
||
expression_up expr = parse_expression (exp);
|
||
|
||
if (expr->nelts >= 1)
|
||
switch (expr->elts[0].opcode)
|
||
{
|
||
case UNOP_PREINCREMENT:
|
||
case UNOP_POSTINCREMENT:
|
||
case UNOP_PREDECREMENT:
|
||
case UNOP_POSTDECREMENT:
|
||
case BINOP_ASSIGN:
|
||
case BINOP_ASSIGN_MODIFY:
|
||
case BINOP_COMMA:
|
||
break;
|
||
default:
|
||
warning
|
||
(_("Expression is not an assignment (and might have no effect)"));
|
||
}
|
||
|
||
evaluate_expression (expr.get ());
|
||
}
|
||
|
||
static void
|
||
info_symbol_command (const char *arg, int from_tty)
|
||
{
|
||
struct minimal_symbol *msymbol;
|
||
struct obj_section *osect;
|
||
CORE_ADDR addr, sect_addr;
|
||
int matches = 0;
|
||
unsigned int offset;
|
||
|
||
if (!arg)
|
||
error_no_arg (_("address"));
|
||
|
||
addr = parse_and_eval_address (arg);
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
ALL_OBJFILE_OSECTIONS (objfile, osect)
|
||
{
|
||
/* Only process each object file once, even if there's a separate
|
||
debug file. */
|
||
if (objfile->separate_debug_objfile_backlink)
|
||
continue;
|
||
|
||
sect_addr = overlay_mapped_address (addr, osect);
|
||
|
||
if (obj_section_addr (osect) <= sect_addr
|
||
&& sect_addr < obj_section_endaddr (osect)
|
||
&& (msymbol
|
||
= lookup_minimal_symbol_by_pc_section (sect_addr,
|
||
osect).minsym))
|
||
{
|
||
const char *obj_name, *mapped, *sec_name, *msym_name;
|
||
const char *loc_string;
|
||
|
||
matches = 1;
|
||
offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol);
|
||
mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
|
||
sec_name = osect->the_bfd_section->name;
|
||
msym_name = MSYMBOL_PRINT_NAME (msymbol);
|
||
|
||
/* Don't print the offset if it is zero.
|
||
We assume there's no need to handle i18n of "sym + offset". */
|
||
std::string string_holder;
|
||
if (offset)
|
||
{
|
||
string_holder = string_printf ("%s + %u", msym_name, offset);
|
||
loc_string = string_holder.c_str ();
|
||
}
|
||
else
|
||
loc_string = msym_name;
|
||
|
||
gdb_assert (osect->objfile && objfile_name (osect->objfile));
|
||
obj_name = objfile_name (osect->objfile);
|
||
|
||
if (MULTI_OBJFILE_P ())
|
||
if (pc_in_unmapped_range (addr, osect))
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in load address range of "
|
||
"%s overlay section %s of %s\n"),
|
||
loc_string, mapped, sec_name, obj_name);
|
||
else
|
||
printf_filtered (_("%s in load address range of "
|
||
"section %s of %s\n"),
|
||
loc_string, sec_name, obj_name);
|
||
else
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in %s overlay section %s of %s\n"),
|
||
loc_string, mapped, sec_name, obj_name);
|
||
else
|
||
printf_filtered (_("%s in section %s of %s\n"),
|
||
loc_string, sec_name, obj_name);
|
||
else
|
||
if (pc_in_unmapped_range (addr, osect))
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in load address range of %s overlay "
|
||
"section %s\n"),
|
||
loc_string, mapped, sec_name);
|
||
else
|
||
printf_filtered
|
||
(_("%s in load address range of section %s\n"),
|
||
loc_string, sec_name);
|
||
else
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in %s overlay section %s\n"),
|
||
loc_string, mapped, sec_name);
|
||
else
|
||
printf_filtered (_("%s in section %s\n"),
|
||
loc_string, sec_name);
|
||
}
|
||
}
|
||
if (matches == 0)
|
||
printf_filtered (_("No symbol matches %s.\n"), arg);
|
||
}
|
||
|
||
static void
|
||
info_address_command (const char *exp, int from_tty)
|
||
{
|
||
struct gdbarch *gdbarch;
|
||
int regno;
|
||
struct symbol *sym;
|
||
struct bound_minimal_symbol msymbol;
|
||
long val;
|
||
struct obj_section *section;
|
||
CORE_ADDR load_addr, context_pc = 0;
|
||
struct field_of_this_result is_a_field_of_this;
|
||
|
||
if (exp == 0)
|
||
error (_("Argument required."));
|
||
|
||
sym = lookup_symbol (exp, get_selected_block (&context_pc), VAR_DOMAIN,
|
||
&is_a_field_of_this).symbol;
|
||
if (sym == NULL)
|
||
{
|
||
if (is_a_field_of_this.type != NULL)
|
||
{
|
||
printf_filtered ("Symbol \"");
|
||
fprintf_symbol_filtered (gdb_stdout, exp,
|
||
current_language->la_language, DMGL_ANSI);
|
||
printf_filtered ("\" is a field of the local class variable ");
|
||
if (current_language->la_language == language_objc)
|
||
printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
|
||
else
|
||
printf_filtered ("`this'\n");
|
||
return;
|
||
}
|
||
|
||
msymbol = lookup_bound_minimal_symbol (exp);
|
||
|
||
if (msymbol.minsym != NULL)
|
||
{
|
||
struct objfile *objfile = msymbol.objfile;
|
||
|
||
gdbarch = get_objfile_arch (objfile);
|
||
load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol);
|
||
|
||
printf_filtered ("Symbol \"");
|
||
fprintf_symbol_filtered (gdb_stdout, exp,
|
||
current_language->la_language, DMGL_ANSI);
|
||
printf_filtered ("\" is at ");
|
||
fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
|
||
gdb_stdout);
|
||
printf_filtered (" in a file compiled without debugging");
|
||
section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (",\n -- loaded at ");
|
||
fputs_styled (paddress (gdbarch, load_addr),
|
||
address_style.style (),
|
||
gdb_stdout);
|
||
printf_filtered (" in overlay section %s",
|
||
section->the_bfd_section->name);
|
||
}
|
||
printf_filtered (".\n");
|
||
}
|
||
else
|
||
error (_("No symbol \"%s\" in current context."), exp);
|
||
return;
|
||
}
|
||
|
||
printf_filtered ("Symbol \"");
|
||
fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym),
|
||
current_language->la_language, DMGL_ANSI);
|
||
printf_filtered ("\" is ");
|
||
val = SYMBOL_VALUE (sym);
|
||
if (SYMBOL_OBJFILE_OWNED (sym))
|
||
section = SYMBOL_OBJ_SECTION (symbol_objfile (sym), sym);
|
||
else
|
||
section = NULL;
|
||
gdbarch = symbol_arch (sym);
|
||
|
||
if (SYMBOL_COMPUTED_OPS (sym) != NULL)
|
||
{
|
||
SYMBOL_COMPUTED_OPS (sym)->describe_location (sym, context_pc,
|
||
gdb_stdout);
|
||
printf_filtered (".\n");
|
||
return;
|
||
}
|
||
|
||
switch (SYMBOL_CLASS (sym))
|
||
{
|
||
case LOC_CONST:
|
||
case LOC_CONST_BYTES:
|
||
printf_filtered ("constant");
|
||
break;
|
||
|
||
case LOC_LABEL:
|
||
printf_filtered ("a label at address ");
|
||
load_addr = SYMBOL_VALUE_ADDRESS (sym);
|
||
fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
|
||
gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (",\n -- loaded at ");
|
||
fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
|
||
gdb_stdout);
|
||
printf_filtered (" in overlay section %s",
|
||
section->the_bfd_section->name);
|
||
}
|
||
break;
|
||
|
||
case LOC_COMPUTED:
|
||
gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method"));
|
||
|
||
case LOC_REGISTER:
|
||
/* GDBARCH is the architecture associated with the objfile the symbol
|
||
is defined in; the target architecture may be different, and may
|
||
provide additional registers. However, we do not know the target
|
||
architecture at this point. We assume the objfile architecture
|
||
will contain all the standard registers that occur in debug info
|
||
in that objfile. */
|
||
regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
|
||
|
||
if (SYMBOL_IS_ARGUMENT (sym))
|
||
printf_filtered (_("an argument in register %s"),
|
||
gdbarch_register_name (gdbarch, regno));
|
||
else
|
||
printf_filtered (_("a variable in register %s"),
|
||
gdbarch_register_name (gdbarch, regno));
|
||
break;
|
||
|
||
case LOC_STATIC:
|
||
printf_filtered (_("static storage at address "));
|
||
load_addr = SYMBOL_VALUE_ADDRESS (sym);
|
||
fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
|
||
gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (_(",\n -- loaded at "));
|
||
fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
|
||
gdb_stdout);
|
||
printf_filtered (_(" in overlay section %s"),
|
||
section->the_bfd_section->name);
|
||
}
|
||
break;
|
||
|
||
case LOC_REGPARM_ADDR:
|
||
/* Note comment at LOC_REGISTER. */
|
||
regno = SYMBOL_REGISTER_OPS (sym)->register_number (sym, gdbarch);
|
||
printf_filtered (_("address of an argument in register %s"),
|
||
gdbarch_register_name (gdbarch, regno));
|
||
break;
|
||
|
||
case LOC_ARG:
|
||
printf_filtered (_("an argument at offset %ld"), val);
|
||
break;
|
||
|
||
case LOC_LOCAL:
|
||
printf_filtered (_("a local variable at frame offset %ld"), val);
|
||
break;
|
||
|
||
case LOC_REF_ARG:
|
||
printf_filtered (_("a reference argument at offset %ld"), val);
|
||
break;
|
||
|
||
case LOC_TYPEDEF:
|
||
printf_filtered (_("a typedef"));
|
||
break;
|
||
|
||
case LOC_BLOCK:
|
||
printf_filtered (_("a function at address "));
|
||
load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym));
|
||
fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
|
||
gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (_(",\n -- loaded at "));
|
||
fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
|
||
gdb_stdout);
|
||
printf_filtered (_(" in overlay section %s"),
|
||
section->the_bfd_section->name);
|
||
}
|
||
break;
|
||
|
||
case LOC_UNRESOLVED:
|
||
{
|
||
struct bound_minimal_symbol msym;
|
||
|
||
msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym));
|
||
if (msym.minsym == NULL)
|
||
printf_filtered ("unresolved");
|
||
else
|
||
{
|
||
section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym);
|
||
|
||
if (section
|
||
&& (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0)
|
||
{
|
||
load_addr = MSYMBOL_VALUE_RAW_ADDRESS (msym.minsym);
|
||
printf_filtered (_("a thread-local variable at offset %s "
|
||
"in the thread-local storage for `%s'"),
|
||
paddress (gdbarch, load_addr),
|
||
objfile_name (section->objfile));
|
||
}
|
||
else
|
||
{
|
||
load_addr = BMSYMBOL_VALUE_ADDRESS (msym);
|
||
printf_filtered (_("static storage at address "));
|
||
fputs_styled (paddress (gdbarch, load_addr),
|
||
address_style.style (), gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (_(",\n -- loaded at "));
|
||
fputs_styled (paddress (gdbarch, load_addr),
|
||
address_style.style (),
|
||
gdb_stdout);
|
||
printf_filtered (_(" in overlay section %s"),
|
||
section->the_bfd_section->name);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case LOC_OPTIMIZED_OUT:
|
||
printf_filtered (_("optimized out"));
|
||
break;
|
||
|
||
default:
|
||
printf_filtered (_("of unknown (botched) type"));
|
||
break;
|
||
}
|
||
printf_filtered (".\n");
|
||
}
|
||
|
||
|
||
static void
|
||
x_command (const char *exp, int from_tty)
|
||
{
|
||
struct format_data fmt;
|
||
struct value *val;
|
||
|
||
fmt.format = last_format ? last_format : 'x';
|
||
fmt.size = last_size;
|
||
fmt.count = 1;
|
||
fmt.raw = 0;
|
||
|
||
/* If there is no expression and no format, use the most recent
|
||
count. */
|
||
if (exp == nullptr && last_count > 0)
|
||
fmt.count = last_count;
|
||
|
||
if (exp && *exp == '/')
|
||
{
|
||
const char *tmp = exp + 1;
|
||
|
||
fmt = decode_format (&tmp, last_format, last_size);
|
||
exp = (char *) tmp;
|
||
}
|
||
|
||
last_count = fmt.count;
|
||
|
||
/* If we have an expression, evaluate it and use it as the address. */
|
||
|
||
if (exp != 0 && *exp != 0)
|
||
{
|
||
expression_up expr = parse_expression (exp);
|
||
/* Cause expression not to be there any more if this command is
|
||
repeated with Newline. But don't clobber a user-defined
|
||
command's definition. */
|
||
if (from_tty)
|
||
set_repeat_arguments ("");
|
||
val = evaluate_expression (expr.get ());
|
||
if (TYPE_IS_REFERENCE (value_type (val)))
|
||
val = coerce_ref (val);
|
||
/* In rvalue contexts, such as this, functions are coerced into
|
||
pointers to functions. This makes "x/i main" work. */
|
||
if (/* last_format == 'i' && */
|
||
TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC
|
||
&& VALUE_LVAL (val) == lval_memory)
|
||
next_address = value_address (val);
|
||
else
|
||
next_address = value_as_address (val);
|
||
|
||
next_gdbarch = expr->gdbarch;
|
||
}
|
||
|
||
if (!next_gdbarch)
|
||
error_no_arg (_("starting display address"));
|
||
|
||
do_examine (fmt, next_gdbarch, next_address);
|
||
|
||
/* If the examine succeeds, we remember its size and format for next
|
||
time. Set last_size to 'b' for strings. */
|
||
if (fmt.format == 's')
|
||
last_size = 'b';
|
||
else
|
||
last_size = fmt.size;
|
||
last_format = fmt.format;
|
||
|
||
/* Set a couple of internal variables if appropriate. */
|
||
if (last_examine_value != nullptr)
|
||
{
|
||
/* Make last address examined available to the user as $_. Use
|
||
the correct pointer type. */
|
||
struct type *pointer_type
|
||
= lookup_pointer_type (value_type (last_examine_value.get ()));
|
||
set_internalvar (lookup_internalvar ("_"),
|
||
value_from_pointer (pointer_type,
|
||
last_examine_address));
|
||
|
||
/* Make contents of last address examined available to the user
|
||
as $__. If the last value has not been fetched from memory
|
||
then don't fetch it now; instead mark it by voiding the $__
|
||
variable. */
|
||
if (value_lazy (last_examine_value.get ()))
|
||
clear_internalvar (lookup_internalvar ("__"));
|
||
else
|
||
set_internalvar (lookup_internalvar ("__"), last_examine_value.get ());
|
||
}
|
||
}
|
||
|
||
|
||
/* Add an expression to the auto-display chain.
|
||
Specify the expression. */
|
||
|
||
static void
|
||
display_command (const char *arg, int from_tty)
|
||
{
|
||
struct format_data fmt;
|
||
struct display *newobj;
|
||
const char *exp = arg;
|
||
|
||
if (exp == 0)
|
||
{
|
||
do_displays ();
|
||
return;
|
||
}
|
||
|
||
if (*exp == '/')
|
||
{
|
||
exp++;
|
||
fmt = decode_format (&exp, 0, 0);
|
||
if (fmt.size && fmt.format == 0)
|
||
fmt.format = 'x';
|
||
if (fmt.format == 'i' || fmt.format == 's')
|
||
fmt.size = 'b';
|
||
}
|
||
else
|
||
{
|
||
fmt.format = 0;
|
||
fmt.size = 0;
|
||
fmt.count = 0;
|
||
fmt.raw = 0;
|
||
}
|
||
|
||
innermost_block_tracker tracker;
|
||
expression_up expr = parse_expression (exp, &tracker);
|
||
|
||
newobj = new display ();
|
||
|
||
newobj->exp_string = xstrdup (exp);
|
||
newobj->exp = std::move (expr);
|
||
newobj->block = tracker.block ();
|
||
newobj->pspace = current_program_space;
|
||
newobj->number = ++display_number;
|
||
newobj->format = fmt;
|
||
newobj->enabled_p = 1;
|
||
newobj->next = NULL;
|
||
|
||
if (display_chain == NULL)
|
||
display_chain = newobj;
|
||
else
|
||
{
|
||
struct display *last;
|
||
|
||
for (last = display_chain; last->next != NULL; last = last->next)
|
||
;
|
||
last->next = newobj;
|
||
}
|
||
|
||
if (from_tty)
|
||
do_one_display (newobj);
|
||
|
||
dont_repeat ();
|
||
}
|
||
|
||
static void
|
||
free_display (struct display *d)
|
||
{
|
||
xfree (d->exp_string);
|
||
delete d;
|
||
}
|
||
|
||
/* Clear out the display_chain. Done when new symtabs are loaded,
|
||
since this invalidates the types stored in many expressions. */
|
||
|
||
void
|
||
clear_displays (void)
|
||
{
|
||
struct display *d;
|
||
|
||
while ((d = display_chain) != NULL)
|
||
{
|
||
display_chain = d->next;
|
||
free_display (d);
|
||
}
|
||
}
|
||
|
||
/* Delete the auto-display DISPLAY. */
|
||
|
||
static void
|
||
delete_display (struct display *display)
|
||
{
|
||
struct display *d;
|
||
|
||
gdb_assert (display != NULL);
|
||
|
||
if (display_chain == display)
|
||
display_chain = display->next;
|
||
|
||
ALL_DISPLAYS (d)
|
||
if (d->next == display)
|
||
{
|
||
d->next = display->next;
|
||
break;
|
||
}
|
||
|
||
free_display (display);
|
||
}
|
||
|
||
/* Call FUNCTION on each of the displays whose numbers are given in
|
||
ARGS. DATA is passed unmodified to FUNCTION. */
|
||
|
||
static void
|
||
map_display_numbers (const char *args,
|
||
void (*function) (struct display *,
|
||
void *),
|
||
void *data)
|
||
{
|
||
int num;
|
||
|
||
if (args == NULL)
|
||
error_no_arg (_("one or more display numbers"));
|
||
|
||
number_or_range_parser parser (args);
|
||
|
||
while (!parser.finished ())
|
||
{
|
||
const char *p = parser.cur_tok ();
|
||
|
||
num = parser.get_number ();
|
||
if (num == 0)
|
||
warning (_("bad display number at or near '%s'"), p);
|
||
else
|
||
{
|
||
struct display *d, *tmp;
|
||
|
||
ALL_DISPLAYS_SAFE (d, tmp)
|
||
if (d->number == num)
|
||
break;
|
||
if (d == NULL)
|
||
printf_unfiltered (_("No display number %d.\n"), num);
|
||
else
|
||
function (d, data);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Callback for map_display_numbers, that deletes a display. */
|
||
|
||
static void
|
||
do_delete_display (struct display *d, void *data)
|
||
{
|
||
delete_display (d);
|
||
}
|
||
|
||
/* "undisplay" command. */
|
||
|
||
static void
|
||
undisplay_command (const char *args, int from_tty)
|
||
{
|
||
if (args == NULL)
|
||
{
|
||
if (query (_("Delete all auto-display expressions? ")))
|
||
clear_displays ();
|
||
dont_repeat ();
|
||
return;
|
||
}
|
||
|
||
map_display_numbers (args, do_delete_display, NULL);
|
||
dont_repeat ();
|
||
}
|
||
|
||
/* Display a single auto-display.
|
||
Do nothing if the display cannot be printed in the current context,
|
||
or if the display is disabled. */
|
||
|
||
static void
|
||
do_one_display (struct display *d)
|
||
{
|
||
int within_current_scope;
|
||
|
||
if (d->enabled_p == 0)
|
||
return;
|
||
|
||
/* The expression carries the architecture that was used at parse time.
|
||
This is a problem if the expression depends on architecture features
|
||
(e.g. register numbers), and the current architecture is now different.
|
||
For example, a display statement like "display/i $pc" is expected to
|
||
display the PC register of the current architecture, not the arch at
|
||
the time the display command was given. Therefore, we re-parse the
|
||
expression if the current architecture has changed. */
|
||
if (d->exp != NULL && d->exp->gdbarch != get_current_arch ())
|
||
{
|
||
d->exp.reset ();
|
||
d->block = NULL;
|
||
}
|
||
|
||
if (d->exp == NULL)
|
||
{
|
||
|
||
try
|
||
{
|
||
innermost_block_tracker tracker;
|
||
d->exp = parse_expression (d->exp_string, &tracker);
|
||
d->block = tracker.block ();
|
||
}
|
||
catch (const gdb_exception &ex)
|
||
{
|
||
/* Can't re-parse the expression. Disable this display item. */
|
||
d->enabled_p = 0;
|
||
warning (_("Unable to display \"%s\": %s"),
|
||
d->exp_string, ex.what ());
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (d->block)
|
||
{
|
||
if (d->pspace == current_program_space)
|
||
within_current_scope = contained_in (get_selected_block (0), d->block);
|
||
else
|
||
within_current_scope = 0;
|
||
}
|
||
else
|
||
within_current_scope = 1;
|
||
if (!within_current_scope)
|
||
return;
|
||
|
||
scoped_restore save_display_number
|
||
= make_scoped_restore (¤t_display_number, d->number);
|
||
|
||
annotate_display_begin ();
|
||
printf_filtered ("%d", d->number);
|
||
annotate_display_number_end ();
|
||
printf_filtered (": ");
|
||
if (d->format.size)
|
||
{
|
||
|
||
annotate_display_format ();
|
||
|
||
printf_filtered ("x/");
|
||
if (d->format.count != 1)
|
||
printf_filtered ("%d", d->format.count);
|
||
printf_filtered ("%c", d->format.format);
|
||
if (d->format.format != 'i' && d->format.format != 's')
|
||
printf_filtered ("%c", d->format.size);
|
||
printf_filtered (" ");
|
||
|
||
annotate_display_expression ();
|
||
|
||
puts_filtered (d->exp_string);
|
||
annotate_display_expression_end ();
|
||
|
||
if (d->format.count != 1 || d->format.format == 'i')
|
||
printf_filtered ("\n");
|
||
else
|
||
printf_filtered (" ");
|
||
|
||
annotate_display_value ();
|
||
|
||
try
|
||
{
|
||
struct value *val;
|
||
CORE_ADDR addr;
|
||
|
||
val = evaluate_expression (d->exp.get ());
|
||
addr = value_as_address (val);
|
||
if (d->format.format == 'i')
|
||
addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr);
|
||
do_examine (d->format, d->exp->gdbarch, addr);
|
||
}
|
||
catch (const gdb_exception_error &ex)
|
||
{
|
||
fprintf_filtered (gdb_stdout, _("<error: %s>\n"),
|
||
ex.what ());
|
||
}
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts;
|
||
|
||
annotate_display_format ();
|
||
|
||
if (d->format.format)
|
||
printf_filtered ("/%c ", d->format.format);
|
||
|
||
annotate_display_expression ();
|
||
|
||
puts_filtered (d->exp_string);
|
||
annotate_display_expression_end ();
|
||
|
||
printf_filtered (" = ");
|
||
|
||
annotate_display_expression ();
|
||
|
||
get_formatted_print_options (&opts, d->format.format);
|
||
opts.raw = d->format.raw;
|
||
|
||
try
|
||
{
|
||
struct value *val;
|
||
|
||
val = evaluate_expression (d->exp.get ());
|
||
print_formatted (val, d->format.size, &opts, gdb_stdout);
|
||
}
|
||
catch (const gdb_exception_error &ex)
|
||
{
|
||
fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.what ());
|
||
}
|
||
|
||
printf_filtered ("\n");
|
||
}
|
||
|
||
annotate_display_end ();
|
||
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
/* Display all of the values on the auto-display chain which can be
|
||
evaluated in the current scope. */
|
||
|
||
void
|
||
do_displays (void)
|
||
{
|
||
struct display *d;
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
do_one_display (d);
|
||
}
|
||
|
||
/* Delete the auto-display which we were in the process of displaying.
|
||
This is done when there is an error or a signal. */
|
||
|
||
void
|
||
disable_display (int num)
|
||
{
|
||
struct display *d;
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
if (d->number == num)
|
||
{
|
||
d->enabled_p = 0;
|
||
return;
|
||
}
|
||
printf_unfiltered (_("No display number %d.\n"), num);
|
||
}
|
||
|
||
void
|
||
disable_current_display (void)
|
||
{
|
||
if (current_display_number >= 0)
|
||
{
|
||
disable_display (current_display_number);
|
||
fprintf_unfiltered (gdb_stderr,
|
||
_("Disabling display %d to "
|
||
"avoid infinite recursion.\n"),
|
||
current_display_number);
|
||
}
|
||
current_display_number = -1;
|
||
}
|
||
|
||
static void
|
||
info_display_command (const char *ignore, int from_tty)
|
||
{
|
||
struct display *d;
|
||
|
||
if (!display_chain)
|
||
printf_unfiltered (_("There are no auto-display expressions now.\n"));
|
||
else
|
||
printf_filtered (_("Auto-display expressions now in effect:\n\
|
||
Num Enb Expression\n"));
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
{
|
||
printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]);
|
||
if (d->format.size)
|
||
printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
|
||
d->format.format);
|
||
else if (d->format.format)
|
||
printf_filtered ("/%c ", d->format.format);
|
||
puts_filtered (d->exp_string);
|
||
if (d->block && !contained_in (get_selected_block (0), d->block))
|
||
printf_filtered (_(" (cannot be evaluated in the current context)"));
|
||
printf_filtered ("\n");
|
||
}
|
||
}
|
||
|
||
/* Callback fo map_display_numbers, that enables or disables the
|
||
passed in display D. */
|
||
|
||
static void
|
||
do_enable_disable_display (struct display *d, void *data)
|
||
{
|
||
d->enabled_p = *(int *) data;
|
||
}
|
||
|
||
/* Implamentation of both the "disable display" and "enable display"
|
||
commands. ENABLE decides what to do. */
|
||
|
||
static void
|
||
enable_disable_display_command (const char *args, int from_tty, int enable)
|
||
{
|
||
if (args == NULL)
|
||
{
|
||
struct display *d;
|
||
|
||
ALL_DISPLAYS (d)
|
||
d->enabled_p = enable;
|
||
return;
|
||
}
|
||
|
||
map_display_numbers (args, do_enable_disable_display, &enable);
|
||
}
|
||
|
||
/* The "enable display" command. */
|
||
|
||
static void
|
||
enable_display_command (const char *args, int from_tty)
|
||
{
|
||
enable_disable_display_command (args, from_tty, 1);
|
||
}
|
||
|
||
/* The "disable display" command. */
|
||
|
||
static void
|
||
disable_display_command (const char *args, int from_tty)
|
||
{
|
||
enable_disable_display_command (args, from_tty, 0);
|
||
}
|
||
|
||
/* display_chain items point to blocks and expressions. Some expressions in
|
||
turn may point to symbols.
|
||
Both symbols and blocks are obstack_alloc'd on objfile_stack, and are
|
||
obstack_free'd when a shared library is unloaded.
|
||
Clear pointers that are about to become dangling.
|
||
Both .exp and .block fields will be restored next time we need to display
|
||
an item by re-parsing .exp_string field in the new execution context. */
|
||
|
||
static void
|
||
clear_dangling_display_expressions (struct objfile *objfile)
|
||
{
|
||
struct display *d;
|
||
struct program_space *pspace;
|
||
|
||
/* With no symbol file we cannot have a block or expression from it. */
|
||
if (objfile == NULL)
|
||
return;
|
||
pspace = objfile->pspace;
|
||
if (objfile->separate_debug_objfile_backlink)
|
||
{
|
||
objfile = objfile->separate_debug_objfile_backlink;
|
||
gdb_assert (objfile->pspace == pspace);
|
||
}
|
||
|
||
for (d = display_chain; d != NULL; d = d->next)
|
||
{
|
||
if (d->pspace != pspace)
|
||
continue;
|
||
|
||
if (lookup_objfile_from_block (d->block) == objfile
|
||
|| (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile)))
|
||
{
|
||
d->exp.reset ();
|
||
d->block = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Print the value in stack frame FRAME of a variable specified by a
|
||
struct symbol. NAME is the name to print; if NULL then VAR's print
|
||
name will be used. STREAM is the ui_file on which to print the
|
||
value. INDENT specifies the number of indent levels to print
|
||
before printing the variable name.
|
||
|
||
This function invalidates FRAME. */
|
||
|
||
void
|
||
print_variable_and_value (const char *name, struct symbol *var,
|
||
struct frame_info *frame,
|
||
struct ui_file *stream, int indent)
|
||
{
|
||
|
||
if (!name)
|
||
name = SYMBOL_PRINT_NAME (var);
|
||
|
||
fputs_filtered (n_spaces (2 * indent), stream);
|
||
fputs_styled (name, variable_name_style.style (), stream);
|
||
fputs_filtered (" = ", stream);
|
||
|
||
try
|
||
{
|
||
struct value *val;
|
||
struct value_print_options opts;
|
||
|
||
/* READ_VAR_VALUE needs a block in order to deal with non-local
|
||
references (i.e. to handle nested functions). In this context, we
|
||
print variables that are local to this frame, so we can avoid passing
|
||
a block to it. */
|
||
val = read_var_value (var, NULL, frame);
|
||
get_user_print_options (&opts);
|
||
opts.deref_ref = 1;
|
||
common_val_print (val, stream, indent, &opts, current_language);
|
||
|
||
/* common_val_print invalidates FRAME when a pretty printer calls inferior
|
||
function. */
|
||
frame = NULL;
|
||
}
|
||
catch (const gdb_exception_error &except)
|
||
{
|
||
fprintf_filtered (stream, "<error reading variable %s (%s)>", name,
|
||
except.what ());
|
||
}
|
||
|
||
fprintf_filtered (stream, "\n");
|
||
}
|
||
|
||
/* Subroutine of ui_printf to simplify it.
|
||
Print VALUE to STREAM using FORMAT.
|
||
VALUE is a C-style string either on the target or
|
||
in a GDB internal variable. */
|
||
|
||
static void
|
||
printf_c_string (struct ui_file *stream, const char *format,
|
||
struct value *value)
|
||
{
|
||
const gdb_byte *str;
|
||
|
||
if (VALUE_LVAL (value) == lval_internalvar
|
||
&& c_is_string_type_p (value_type (value)))
|
||
{
|
||
size_t len = TYPE_LENGTH (value_type (value));
|
||
|
||
/* Copy the internal var value to TEM_STR and append a terminating null
|
||
character. This protects against corrupted C-style strings that lack
|
||
the terminating null char. It also allows Ada-style strings (not
|
||
null terminated) to be printed without problems. */
|
||
gdb_byte *tem_str = (gdb_byte *) alloca (len + 1);
|
||
|
||
memcpy (tem_str, value_contents (value), len);
|
||
tem_str [len] = 0;
|
||
str = tem_str;
|
||
}
|
||
else
|
||
{
|
||
CORE_ADDR tem = value_as_address (value);;
|
||
|
||
if (tem == 0)
|
||
{
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, format, "(null)");
|
||
DIAGNOSTIC_POP
|
||
return;
|
||
}
|
||
|
||
/* This is a %s argument. Find the length of the string. */
|
||
size_t len;
|
||
|
||
for (len = 0;; len++)
|
||
{
|
||
gdb_byte c;
|
||
|
||
QUIT;
|
||
read_memory (tem + len, &c, 1);
|
||
if (c == 0)
|
||
break;
|
||
}
|
||
|
||
/* Copy the string contents into a string inside GDB. */
|
||
gdb_byte *tem_str = (gdb_byte *) alloca (len + 1);
|
||
|
||
if (len != 0)
|
||
read_memory (tem, tem_str, len);
|
||
tem_str[len] = 0;
|
||
str = tem_str;
|
||
}
|
||
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, format, (char *) str);
|
||
DIAGNOSTIC_POP
|
||
}
|
||
|
||
/* Subroutine of ui_printf to simplify it.
|
||
Print VALUE to STREAM using FORMAT.
|
||
VALUE is a wide C-style string on the target or
|
||
in a GDB internal variable. */
|
||
|
||
static void
|
||
printf_wide_c_string (struct ui_file *stream, const char *format,
|
||
struct value *value)
|
||
{
|
||
const gdb_byte *str;
|
||
size_t len;
|
||
struct gdbarch *gdbarch = get_type_arch (value_type (value));
|
||
struct type *wctype = lookup_typename (current_language, gdbarch,
|
||
"wchar_t", NULL, 0);
|
||
int wcwidth = TYPE_LENGTH (wctype);
|
||
|
||
if (VALUE_LVAL (value) == lval_internalvar
|
||
&& c_is_string_type_p (value_type (value)))
|
||
{
|
||
str = value_contents (value);
|
||
len = TYPE_LENGTH (value_type (value));
|
||
}
|
||
else
|
||
{
|
||
CORE_ADDR tem = value_as_address (value);
|
||
|
||
if (tem == 0)
|
||
{
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, format, "(null)");
|
||
DIAGNOSTIC_POP
|
||
return;
|
||
}
|
||
|
||
/* This is a %s argument. Find the length of the string. */
|
||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||
gdb_byte *buf = (gdb_byte *) alloca (wcwidth);
|
||
|
||
for (len = 0;; len += wcwidth)
|
||
{
|
||
QUIT;
|
||
read_memory (tem + len, buf, wcwidth);
|
||
if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0)
|
||
break;
|
||
}
|
||
|
||
/* Copy the string contents into a string inside GDB. */
|
||
gdb_byte *tem_str = (gdb_byte *) alloca (len + wcwidth);
|
||
|
||
if (len != 0)
|
||
read_memory (tem, tem_str, len);
|
||
memset (&tem_str[len], 0, wcwidth);
|
||
str = tem_str;
|
||
}
|
||
|
||
auto_obstack output;
|
||
|
||
convert_between_encodings (target_wide_charset (gdbarch),
|
||
host_charset (),
|
||
str, len, wcwidth,
|
||
&output, translit_char);
|
||
obstack_grow_str0 (&output, "");
|
||
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, format, obstack_base (&output));
|
||
DIAGNOSTIC_POP
|
||
}
|
||
|
||
/* Subroutine of ui_printf to simplify it.
|
||
Print VALUE, a floating point value, to STREAM using FORMAT. */
|
||
|
||
static void
|
||
printf_floating (struct ui_file *stream, const char *format,
|
||
struct value *value, enum argclass argclass)
|
||
{
|
||
/* Parameter data. */
|
||
struct type *param_type = value_type (value);
|
||
struct gdbarch *gdbarch = get_type_arch (param_type);
|
||
|
||
/* Determine target type corresponding to the format string. */
|
||
struct type *fmt_type;
|
||
switch (argclass)
|
||
{
|
||
case double_arg:
|
||
fmt_type = builtin_type (gdbarch)->builtin_double;
|
||
break;
|
||
case long_double_arg:
|
||
fmt_type = builtin_type (gdbarch)->builtin_long_double;
|
||
break;
|
||
case dec32float_arg:
|
||
fmt_type = builtin_type (gdbarch)->builtin_decfloat;
|
||
break;
|
||
case dec64float_arg:
|
||
fmt_type = builtin_type (gdbarch)->builtin_decdouble;
|
||
break;
|
||
case dec128float_arg:
|
||
fmt_type = builtin_type (gdbarch)->builtin_declong;
|
||
break;
|
||
default:
|
||
gdb_assert_not_reached ("unexpected argument class");
|
||
}
|
||
|
||
/* To match the traditional GDB behavior, the conversion is
|
||
done differently depending on the type of the parameter:
|
||
|
||
- if the parameter has floating-point type, it's value
|
||
is converted to the target type;
|
||
|
||
- otherwise, if the parameter has a type that is of the
|
||
same size as a built-in floating-point type, the value
|
||
bytes are interpreted as if they were of that type, and
|
||
then converted to the target type (this is not done for
|
||
decimal floating-point argument classes);
|
||
|
||
- otherwise, if the source value has an integer value,
|
||
it's value is converted to the target type;
|
||
|
||
- otherwise, an error is raised.
|
||
|
||
In either case, the result of the conversion is a byte buffer
|
||
formatted in the target format for the target type. */
|
||
|
||
if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT)
|
||
{
|
||
param_type = float_type_from_length (param_type);
|
||
if (param_type != value_type (value))
|
||
value = value_from_contents (param_type, value_contents (value));
|
||
}
|
||
|
||
value = value_cast (fmt_type, value);
|
||
|
||
/* Convert the value to a string and print it. */
|
||
std::string str
|
||
= target_float_to_string (value_contents (value), fmt_type, format);
|
||
fputs_filtered (str.c_str (), stream);
|
||
}
|
||
|
||
/* Subroutine of ui_printf to simplify it.
|
||
Print VALUE, a target pointer, to STREAM using FORMAT. */
|
||
|
||
static void
|
||
printf_pointer (struct ui_file *stream, const char *format,
|
||
struct value *value)
|
||
{
|
||
/* We avoid the host's %p because pointers are too
|
||
likely to be the wrong size. The only interesting
|
||
modifier for %p is a width; extract that, and then
|
||
handle %p as glibc would: %#x or a literal "(nil)". */
|
||
|
||
const char *p;
|
||
char *fmt, *fmt_p;
|
||
#ifdef PRINTF_HAS_LONG_LONG
|
||
long long val = value_as_long (value);
|
||
#else
|
||
long val = value_as_long (value);
|
||
#endif
|
||
|
||
fmt = (char *) alloca (strlen (format) + 5);
|
||
|
||
/* Copy up to the leading %. */
|
||
p = format;
|
||
fmt_p = fmt;
|
||
while (*p)
|
||
{
|
||
int is_percent = (*p == '%');
|
||
|
||
*fmt_p++ = *p++;
|
||
if (is_percent)
|
||
{
|
||
if (*p == '%')
|
||
*fmt_p++ = *p++;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (val != 0)
|
||
*fmt_p++ = '#';
|
||
|
||
/* Copy any width or flags. Only the "-" flag is valid for pointers
|
||
-- see the format_pieces constructor. */
|
||
while (*p == '-' || (*p >= '0' && *p < '9'))
|
||
*fmt_p++ = *p++;
|
||
|
||
gdb_assert (*p == 'p' && *(p + 1) == '\0');
|
||
if (val != 0)
|
||
{
|
||
#ifdef PRINTF_HAS_LONG_LONG
|
||
*fmt_p++ = 'l';
|
||
#endif
|
||
*fmt_p++ = 'l';
|
||
*fmt_p++ = 'x';
|
||
*fmt_p++ = '\0';
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, fmt, val);
|
||
DIAGNOSTIC_POP
|
||
}
|
||
else
|
||
{
|
||
*fmt_p++ = 's';
|
||
*fmt_p++ = '\0';
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, fmt, "(nil)");
|
||
DIAGNOSTIC_POP
|
||
}
|
||
}
|
||
|
||
/* printf "printf format string" ARG to STREAM. */
|
||
|
||
static void
|
||
ui_printf (const char *arg, struct ui_file *stream)
|
||
{
|
||
const char *s = arg;
|
||
std::vector<struct value *> val_args;
|
||
|
||
if (s == 0)
|
||
error_no_arg (_("format-control string and values to print"));
|
||
|
||
s = skip_spaces (s);
|
||
|
||
/* A format string should follow, enveloped in double quotes. */
|
||
if (*s++ != '"')
|
||
error (_("Bad format string, missing '\"'."));
|
||
|
||
format_pieces fpieces (&s);
|
||
|
||
if (*s++ != '"')
|
||
error (_("Bad format string, non-terminated '\"'."));
|
||
|
||
s = skip_spaces (s);
|
||
|
||
if (*s != ',' && *s != 0)
|
||
error (_("Invalid argument syntax"));
|
||
|
||
if (*s == ',')
|
||
s++;
|
||
s = skip_spaces (s);
|
||
|
||
{
|
||
int nargs_wanted;
|
||
int i;
|
||
const char *current_substring;
|
||
|
||
nargs_wanted = 0;
|
||
for (auto &&piece : fpieces)
|
||
if (piece.argclass != literal_piece)
|
||
++nargs_wanted;
|
||
|
||
/* Now, parse all arguments and evaluate them.
|
||
Store the VALUEs in VAL_ARGS. */
|
||
|
||
while (*s != '\0')
|
||
{
|
||
const char *s1;
|
||
|
||
s1 = s;
|
||
val_args.push_back (parse_to_comma_and_eval (&s1));
|
||
|
||
s = s1;
|
||
if (*s == ',')
|
||
s++;
|
||
}
|
||
|
||
if (val_args.size () != nargs_wanted)
|
||
error (_("Wrong number of arguments for specified format-string"));
|
||
|
||
/* Now actually print them. */
|
||
i = 0;
|
||
for (auto &&piece : fpieces)
|
||
{
|
||
current_substring = piece.string;
|
||
switch (piece.argclass)
|
||
{
|
||
case string_arg:
|
||
printf_c_string (stream, current_substring, val_args[i]);
|
||
break;
|
||
case wide_string_arg:
|
||
printf_wide_c_string (stream, current_substring, val_args[i]);
|
||
break;
|
||
case wide_char_arg:
|
||
{
|
||
struct gdbarch *gdbarch
|
||
= get_type_arch (value_type (val_args[i]));
|
||
struct type *wctype = lookup_typename (current_language, gdbarch,
|
||
"wchar_t", NULL, 0);
|
||
struct type *valtype;
|
||
const gdb_byte *bytes;
|
||
|
||
valtype = value_type (val_args[i]);
|
||
if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype)
|
||
|| TYPE_CODE (valtype) != TYPE_CODE_INT)
|
||
error (_("expected wchar_t argument for %%lc"));
|
||
|
||
bytes = value_contents (val_args[i]);
|
||
|
||
auto_obstack output;
|
||
|
||
convert_between_encodings (target_wide_charset (gdbarch),
|
||
host_charset (),
|
||
bytes, TYPE_LENGTH (valtype),
|
||
TYPE_LENGTH (valtype),
|
||
&output, translit_char);
|
||
obstack_grow_str0 (&output, "");
|
||
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, current_substring,
|
||
obstack_base (&output));
|
||
DIAGNOSTIC_POP
|
||
}
|
||
break;
|
||
case long_long_arg:
|
||
#ifdef PRINTF_HAS_LONG_LONG
|
||
{
|
||
long long val = value_as_long (val_args[i]);
|
||
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, current_substring, val);
|
||
DIAGNOSTIC_POP
|
||
break;
|
||
}
|
||
#else
|
||
error (_("long long not supported in printf"));
|
||
#endif
|
||
case int_arg:
|
||
{
|
||
int val = value_as_long (val_args[i]);
|
||
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, current_substring, val);
|
||
DIAGNOSTIC_POP
|
||
break;
|
||
}
|
||
case long_arg:
|
||
{
|
||
long val = value_as_long (val_args[i]);
|
||
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, current_substring, val);
|
||
DIAGNOSTIC_POP
|
||
break;
|
||
}
|
||
/* Handles floating-point values. */
|
||
case double_arg:
|
||
case long_double_arg:
|
||
case dec32float_arg:
|
||
case dec64float_arg:
|
||
case dec128float_arg:
|
||
printf_floating (stream, current_substring, val_args[i],
|
||
piece.argclass);
|
||
break;
|
||
case ptr_arg:
|
||
printf_pointer (stream, current_substring, val_args[i]);
|
||
break;
|
||
case literal_piece:
|
||
/* Print a portion of the format string that has no
|
||
directives. Note that this will not include any
|
||
ordinary %-specs, but it might include "%%". That is
|
||
why we use printf_filtered and not puts_filtered here.
|
||
Also, we pass a dummy argument because some platforms
|
||
have modified GCC to include -Wformat-security by
|
||
default, which will warn here if there is no
|
||
argument. */
|
||
DIAGNOSTIC_PUSH
|
||
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
|
||
fprintf_filtered (stream, current_substring, 0);
|
||
DIAGNOSTIC_POP
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
/* Maybe advance to the next argument. */
|
||
if (piece.argclass != literal_piece)
|
||
++i;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Implement the "printf" command. */
|
||
|
||
static void
|
||
printf_command (const char *arg, int from_tty)
|
||
{
|
||
ui_printf (arg, gdb_stdout);
|
||
reset_terminal_style (gdb_stdout);
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
/* Implement the "eval" command. */
|
||
|
||
static void
|
||
eval_command (const char *arg, int from_tty)
|
||
{
|
||
string_file stb;
|
||
|
||
ui_printf (arg, &stb);
|
||
|
||
std::string expanded = insert_user_defined_cmd_args (stb.c_str ());
|
||
|
||
execute_command (expanded.c_str (), from_tty);
|
||
}
|
||
|
||
void
|
||
_initialize_printcmd (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
current_display_number = -1;
|
||
|
||
gdb::observers::free_objfile.attach (clear_dangling_display_expressions);
|
||
|
||
add_info ("address", info_address_command,
|
||
_("Describe where symbol SYM is stored.\n\
|
||
Usage: info address SYM"));
|
||
|
||
add_info ("symbol", info_symbol_command, _("\
|
||
Describe what symbol is at location ADDR.\n\
|
||
Usage: info symbol ADDR\n\
|
||
Only for symbols with fixed locations (global or static scope)."));
|
||
|
||
add_com ("x", class_vars, x_command, _("\
|
||
Examine memory: x/FMT ADDRESS.\n\
|
||
ADDRESS is an expression for the memory address to examine.\n\
|
||
FMT is a repeat count followed by a format letter and a size letter.\n\
|
||
Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
|
||
t(binary), f(float), a(address), i(instruction), c(char), s(string)\n\
|
||
and z(hex, zero padded on the left).\n\
|
||
Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
|
||
The specified number of objects of the specified size are printed\n\
|
||
according to the format. If a negative number is specified, memory is\n\
|
||
examined backward from the address.\n\n\
|
||
Defaults for format and size letters are those previously used.\n\
|
||
Default count is 1. Default address is following last thing printed\n\
|
||
with this command or \"print\"."));
|
||
|
||
add_info ("display", info_display_command, _("\
|
||
Expressions to display when program stops, with code numbers.\n\
|
||
Usage: info display"));
|
||
|
||
add_cmd ("undisplay", class_vars, undisplay_command, _("\
|
||
Cancel some expressions to be displayed when program stops.\n\
|
||
Usage: undisplay [NUM]...\n\
|
||
Arguments are the code numbers of the expressions to stop displaying.\n\
|
||
No argument means cancel all automatic-display expressions.\n\
|
||
\"delete display\" has the same effect as this command.\n\
|
||
Do \"info display\" to see current list of code numbers."),
|
||
&cmdlist);
|
||
|
||
add_com ("display", class_vars, display_command, _("\
|
||
Print value of expression EXP each time the program stops.\n\
|
||
Usage: display[/FMT] EXP\n\
|
||
/FMT may be used before EXP as in the \"print\" command.\n\
|
||
/FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
|
||
as in the \"x\" command, and then EXP is used to get the address to examine\n\
|
||
and examining is done as in the \"x\" command.\n\n\
|
||
With no argument, display all currently requested auto-display expressions.\n\
|
||
Use \"undisplay\" to cancel display requests previously made."));
|
||
|
||
add_cmd ("display", class_vars, enable_display_command, _("\
|
||
Enable some expressions to be displayed when program stops.\n\
|
||
Usage: enable display [NUM]...\n\
|
||
Arguments are the code numbers of the expressions to resume displaying.\n\
|
||
No argument means enable all automatic-display expressions.\n\
|
||
Do \"info display\" to see current list of code numbers."), &enablelist);
|
||
|
||
add_cmd ("display", class_vars, disable_display_command, _("\
|
||
Disable some expressions to be displayed when program stops.\n\
|
||
Usage: disable display [NUM]...\n\
|
||
Arguments are the code numbers of the expressions to stop displaying.\n\
|
||
No argument means disable all automatic-display expressions.\n\
|
||
Do \"info display\" to see current list of code numbers."), &disablelist);
|
||
|
||
add_cmd ("display", class_vars, undisplay_command, _("\
|
||
Cancel some expressions to be displayed when program stops.\n\
|
||
Usage: delete display [NUM]...\n\
|
||
Arguments are the code numbers of the expressions to stop displaying.\n\
|
||
No argument means cancel all automatic-display expressions.\n\
|
||
Do \"info display\" to see current list of code numbers."), &deletelist);
|
||
|
||
add_com ("printf", class_vars, printf_command, _("\
|
||
Formatted printing, like the C \"printf\" function.\n\
|
||
Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\
|
||
This supports most C printf format specifications, like %s, %d, etc."));
|
||
|
||
add_com ("output", class_vars, output_command, _("\
|
||
Like \"print\" but don't put in value history and don't print newline.\n\
|
||
Usage: output EXP\n\
|
||
This is useful in user-defined commands."));
|
||
|
||
add_prefix_cmd ("set", class_vars, set_command, _("\
|
||
Evaluate expression EXP and assign result to variable VAR\n\
|
||
Usage: set VAR = EXP\n\
|
||
This uses assignment syntax appropriate for the current language\n\
|
||
(VAR = EXP or VAR := EXP for example).\n\
|
||
VAR may be a debugger \"convenience\" variable (names starting\n\
|
||
with $), a register (a few standard names starting with $), or an actual\n\
|
||
variable in the program being debugged. EXP is any valid expression.\n\
|
||
Use \"set variable\" for variables with names identical to set subcommands.\n\
|
||
\n\
|
||
With a subcommand, this command modifies parts of the gdb environment.\n\
|
||
You can see these environment settings with the \"show\" command."),
|
||
&setlist, "set ", 1, &cmdlist);
|
||
if (dbx_commands)
|
||
add_com ("assign", class_vars, set_command, _("\
|
||
Evaluate expression EXP and assign result to variable VAR\n\
|
||
Usage: assign VAR = EXP\n\
|
||
This uses assignment syntax appropriate for the current language\n\
|
||
(VAR = EXP or VAR := EXP for example).\n\
|
||
VAR may be a debugger \"convenience\" variable (names starting\n\
|
||
with $), a register (a few standard names starting with $), or an actual\n\
|
||
variable in the program being debugged. EXP is any valid expression.\n\
|
||
Use \"set variable\" for variables with names identical to set subcommands.\n\
|
||
\nWith a subcommand, this command modifies parts of the gdb environment.\n\
|
||
You can see these environment settings with the \"show\" command."));
|
||
|
||
/* "call" is the same as "set", but handy for dbx users to call fns. */
|
||
c = add_com ("call", class_vars, call_command, _("\
|
||
Call a function in the program.\n\
|
||
Usage: call EXP\n\
|
||
The argument is the function name and arguments, in the notation of the\n\
|
||
current working language. The result is printed and saved in the value\n\
|
||
history, if it is not void."));
|
||
set_cmd_completer_handle_brkchars (c, print_command_completer);
|
||
|
||
add_cmd ("variable", class_vars, set_command, _("\
|
||
Evaluate expression EXP and assign result to variable VAR\n\
|
||
Usage: set variable VAR = EXP\n\
|
||
This uses assignment syntax appropriate for the current language\n\
|
||
(VAR = EXP or VAR := EXP for example).\n\
|
||
VAR may be a debugger \"convenience\" variable (names starting\n\
|
||
with $), a register (a few standard names starting with $), or an actual\n\
|
||
variable in the program being debugged. EXP is any valid expression.\n\
|
||
This may usually be abbreviated to simply \"set\"."),
|
||
&setlist);
|
||
add_alias_cmd ("var", "variable", class_vars, 0, &setlist);
|
||
|
||
const auto print_opts = make_value_print_options_def_group (nullptr);
|
||
|
||
static const std::string print_help = gdb::option::build_help (N_("\
|
||
Print value of expression EXP.\n\
|
||
Usage: print [[OPTION]... --] [/FMT] [EXP]\n\
|
||
\n\
|
||
Options:\n\
|
||
%OPTIONS%\
|
||
Note: because this command accepts arbitrary expressions, if you\n\
|
||
specify any command option, you must use a double dash (\"--\")\n\
|
||
to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\
|
||
\n\
|
||
Variables accessible are those of the lexical environment of the selected\n\
|
||
stack frame, plus all those whose scope is global or an entire file.\n\
|
||
\n\
|
||
$NUM gets previous value number NUM. $ and $$ are the last two values.\n\
|
||
$$NUM refers to NUM'th value back from the last one.\n\
|
||
Names starting with $ refer to registers (with the values they would have\n\
|
||
if the program were to return to the stack frame now selected, restoring\n\
|
||
all registers saved by frames farther in) or else to debugger\n\
|
||
\"convenience\" variables (any such name not a known register).\n\
|
||
Use assignment expressions to give values to convenience variables.\n\
|
||
\n\
|
||
{TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
|
||
@ is a binary operator for treating consecutive data objects\n\
|
||
anywhere in memory as an array. FOO@NUM gives an array whose first\n\
|
||
element is FOO, whose second element is stored in the space following\n\
|
||
where FOO is stored, etc. FOO must be an expression whose value\n\
|
||
resides in memory.\n\
|
||
\n\
|
||
EXP may be preceded with /FMT, where FMT is a format letter\n\
|
||
but no count or size letter (see \"x\" command)."),
|
||
print_opts);
|
||
|
||
c = add_com ("print", class_vars, print_command, print_help.c_str ());
|
||
set_cmd_completer_handle_brkchars (c, print_command_completer);
|
||
add_com_alias ("p", "print", class_vars, 1);
|
||
add_com_alias ("inspect", "print", class_vars, 1);
|
||
|
||
add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
|
||
&max_symbolic_offset, _("\
|
||
Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\
|
||
Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\
|
||
Tell GDB to only display the symbolic form of an address if the\n\
|
||
offset between the closest earlier symbol and the address is less than\n\
|
||
the specified maximum offset. The default is \"unlimited\", which tells GDB\n\
|
||
to always print the symbolic form of an address if any symbol precedes\n\
|
||
it. Zero is equivalent to \"unlimited\"."),
|
||
NULL,
|
||
show_max_symbolic_offset,
|
||
&setprintlist, &showprintlist);
|
||
add_setshow_boolean_cmd ("symbol-filename", no_class,
|
||
&print_symbol_filename, _("\
|
||
Set printing of source filename and line number with <SYMBOL>."), _("\
|
||
Show printing of source filename and line number with <SYMBOL>."), NULL,
|
||
NULL,
|
||
show_print_symbol_filename,
|
||
&setprintlist, &showprintlist);
|
||
|
||
add_com ("eval", no_class, eval_command, _("\
|
||
Construct a GDB command and then evaluate it.\n\
|
||
Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\
|
||
Convert the arguments to a string as \"printf\" would, but then\n\
|
||
treat this string as a command line, and evaluate it."));
|
||
}
|