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.
1100 lines
34 KiB
C
1100 lines
34 KiB
C
/* Find a variable's value in memory, for GDB, the GNU debugger.
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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 "symtab.h"
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#include "gdbtypes.h"
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#include "frame.h"
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#include "value.h"
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#include "gdbcore.h"
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#include "inferior.h"
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#include "target.h"
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#include "symfile.h" /* for overlay functions */
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#include "regcache.h"
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#include "user-regs.h"
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#include "block.h"
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#include "objfiles.h"
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#include "language.h"
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#include "dwarf2loc.h"
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#include "gdbsupport/selftest.h"
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/* Basic byte-swapping routines. All 'extract' functions return a
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host-format integer from a target-format integer at ADDR which is
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LEN bytes long. */
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#if TARGET_CHAR_BIT != 8 || HOST_CHAR_BIT != 8
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/* 8 bit characters are a pretty safe assumption these days, so we
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assume it throughout all these swapping routines. If we had to deal with
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9 bit characters, we would need to make len be in bits and would have
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to re-write these routines... */
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you lose
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#endif
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template<typename T, typename>
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T
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extract_integer (const gdb_byte *addr, int len, enum bfd_endian byte_order)
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{
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typename std::make_unsigned<T>::type retval = 0;
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const unsigned char *p;
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const unsigned char *startaddr = addr;
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const unsigned char *endaddr = startaddr + len;
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if (len > (int) sizeof (T))
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error (_("\
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That operation is not available on integers of more than %d bytes."),
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(int) sizeof (T));
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/* Start at the most significant end of the integer, and work towards
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the least significant. */
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if (byte_order == BFD_ENDIAN_BIG)
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{
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p = startaddr;
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if (std::is_signed<T>::value)
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{
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/* Do the sign extension once at the start. */
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retval = ((LONGEST) * p ^ 0x80) - 0x80;
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++p;
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}
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for (; p < endaddr; ++p)
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retval = (retval << 8) | *p;
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}
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else
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{
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p = endaddr - 1;
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if (std::is_signed<T>::value)
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{
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/* Do the sign extension once at the start. */
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retval = ((LONGEST) * p ^ 0x80) - 0x80;
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--p;
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}
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for (; p >= startaddr; --p)
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retval = (retval << 8) | *p;
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}
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return retval;
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}
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/* Explicit instantiations. */
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template LONGEST extract_integer<LONGEST> (const gdb_byte *addr, int len,
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enum bfd_endian byte_order);
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template ULONGEST extract_integer<ULONGEST> (const gdb_byte *addr, int len,
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enum bfd_endian byte_order);
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/* Sometimes a long long unsigned integer can be extracted as a
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LONGEST value. This is done so that we can print these values
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better. If this integer can be converted to a LONGEST, this
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function returns 1 and sets *PVAL. Otherwise it returns 0. */
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int
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extract_long_unsigned_integer (const gdb_byte *addr, int orig_len,
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enum bfd_endian byte_order, LONGEST *pval)
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{
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const gdb_byte *p;
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const gdb_byte *first_addr;
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int len;
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len = orig_len;
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if (byte_order == BFD_ENDIAN_BIG)
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{
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for (p = addr;
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len > (int) sizeof (LONGEST) && p < addr + orig_len;
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p++)
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{
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if (*p == 0)
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len--;
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else
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break;
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}
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first_addr = p;
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}
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else
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{
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first_addr = addr;
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for (p = addr + orig_len - 1;
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len > (int) sizeof (LONGEST) && p >= addr;
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p--)
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{
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if (*p == 0)
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len--;
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else
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break;
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}
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}
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if (len <= (int) sizeof (LONGEST))
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{
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*pval = (LONGEST) extract_unsigned_integer (first_addr,
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sizeof (LONGEST),
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byte_order);
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return 1;
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}
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return 0;
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}
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/* Treat the bytes at BUF as a pointer of type TYPE, and return the
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address it represents. */
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CORE_ADDR
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extract_typed_address (const gdb_byte *buf, struct type *type)
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{
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if (TYPE_CODE (type) != TYPE_CODE_PTR && !TYPE_IS_REFERENCE (type))
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internal_error (__FILE__, __LINE__,
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_("extract_typed_address: "
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"type is not a pointer or reference"));
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return gdbarch_pointer_to_address (get_type_arch (type), type, buf);
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}
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/* All 'store' functions accept a host-format integer and store a
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target-format integer at ADDR which is LEN bytes long. */
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template<typename T, typename>
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void
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store_integer (gdb_byte *addr, int len, enum bfd_endian byte_order,
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T val)
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{
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gdb_byte *p;
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gdb_byte *startaddr = addr;
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gdb_byte *endaddr = startaddr + len;
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/* Start at the least significant end of the integer, and work towards
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the most significant. */
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if (byte_order == BFD_ENDIAN_BIG)
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{
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for (p = endaddr - 1; p >= startaddr; --p)
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{
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*p = val & 0xff;
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val >>= 8;
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}
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}
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else
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{
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for (p = startaddr; p < endaddr; ++p)
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{
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*p = val & 0xff;
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val >>= 8;
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}
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}
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}
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/* Explicit instantiations. */
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template void store_integer (gdb_byte *addr, int len,
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enum bfd_endian byte_order,
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LONGEST val);
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template void store_integer (gdb_byte *addr, int len,
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enum bfd_endian byte_order,
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ULONGEST val);
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/* Store the address ADDR as a pointer of type TYPE at BUF, in target
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form. */
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void
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store_typed_address (gdb_byte *buf, struct type *type, CORE_ADDR addr)
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{
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if (TYPE_CODE (type) != TYPE_CODE_PTR && !TYPE_IS_REFERENCE (type))
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internal_error (__FILE__, __LINE__,
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_("store_typed_address: "
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"type is not a pointer or reference"));
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gdbarch_address_to_pointer (get_type_arch (type), type, buf, addr);
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}
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/* Copy a value from SOURCE of size SOURCE_SIZE bytes to DEST of size DEST_SIZE
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bytes. If SOURCE_SIZE is greater than DEST_SIZE, then truncate the most
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significant bytes. If SOURCE_SIZE is less than DEST_SIZE then either sign
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or zero extended according to IS_SIGNED. Values are stored in memory with
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endianess BYTE_ORDER. */
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void
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copy_integer_to_size (gdb_byte *dest, int dest_size, const gdb_byte *source,
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int source_size, bool is_signed,
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enum bfd_endian byte_order)
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{
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signed int size_diff = dest_size - source_size;
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/* Copy across everything from SOURCE that can fit into DEST. */
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if (byte_order == BFD_ENDIAN_BIG && size_diff > 0)
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memcpy (dest + size_diff, source, source_size);
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else if (byte_order == BFD_ENDIAN_BIG && size_diff < 0)
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memcpy (dest, source - size_diff, dest_size);
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else
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memcpy (dest, source, std::min (source_size, dest_size));
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/* Fill the remaining space in DEST by either zero extending or sign
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extending. */
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if (size_diff > 0)
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{
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gdb_byte extension = 0;
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if (is_signed
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&& ((byte_order != BFD_ENDIAN_BIG && source[source_size - 1] & 0x80)
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|| (byte_order == BFD_ENDIAN_BIG && source[0] & 0x80)))
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extension = 0xff;
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/* Extend into MSBs of SOURCE. */
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if (byte_order == BFD_ENDIAN_BIG)
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memset (dest, extension, size_diff);
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else
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memset (dest + source_size, extension, size_diff);
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}
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}
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/* Return a `value' with the contents of (virtual or cooked) register
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REGNUM as found in the specified FRAME. The register's type is
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determined by register_type(). */
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struct value *
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value_of_register (int regnum, struct frame_info *frame)
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{
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struct gdbarch *gdbarch = get_frame_arch (frame);
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struct value *reg_val;
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/* User registers lie completely outside of the range of normal
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registers. Catch them early so that the target never sees them. */
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if (regnum >= gdbarch_num_cooked_regs (gdbarch))
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return value_of_user_reg (regnum, frame);
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reg_val = value_of_register_lazy (frame, regnum);
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value_fetch_lazy (reg_val);
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return reg_val;
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}
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/* Return a `value' with the contents of (virtual or cooked) register
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REGNUM as found in the specified FRAME. The register's type is
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determined by register_type(). The value is not fetched. */
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struct value *
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value_of_register_lazy (struct frame_info *frame, int regnum)
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{
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struct gdbarch *gdbarch = get_frame_arch (frame);
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struct value *reg_val;
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struct frame_info *next_frame;
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gdb_assert (regnum < gdbarch_num_cooked_regs (gdbarch));
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gdb_assert (frame != NULL);
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next_frame = get_next_frame_sentinel_okay (frame);
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/* We should have a valid next frame. */
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gdb_assert (frame_id_p (get_frame_id (next_frame)));
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reg_val = allocate_value_lazy (register_type (gdbarch, regnum));
|
||
VALUE_LVAL (reg_val) = lval_register;
|
||
VALUE_REGNUM (reg_val) = regnum;
|
||
VALUE_NEXT_FRAME_ID (reg_val) = get_frame_id (next_frame);
|
||
|
||
return reg_val;
|
||
}
|
||
|
||
/* Given a pointer of type TYPE in target form in BUF, return the
|
||
address it represents. */
|
||
CORE_ADDR
|
||
unsigned_pointer_to_address (struct gdbarch *gdbarch,
|
||
struct type *type, const gdb_byte *buf)
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||
|
||
return extract_unsigned_integer (buf, TYPE_LENGTH (type), byte_order);
|
||
}
|
||
|
||
CORE_ADDR
|
||
signed_pointer_to_address (struct gdbarch *gdbarch,
|
||
struct type *type, const gdb_byte *buf)
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||
|
||
return extract_signed_integer (buf, TYPE_LENGTH (type), byte_order);
|
||
}
|
||
|
||
/* Given an address, store it as a pointer of type TYPE in target
|
||
format in BUF. */
|
||
void
|
||
unsigned_address_to_pointer (struct gdbarch *gdbarch, struct type *type,
|
||
gdb_byte *buf, CORE_ADDR addr)
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||
|
||
store_unsigned_integer (buf, TYPE_LENGTH (type), byte_order, addr);
|
||
}
|
||
|
||
void
|
||
address_to_signed_pointer (struct gdbarch *gdbarch, struct type *type,
|
||
gdb_byte *buf, CORE_ADDR addr)
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
|
||
|
||
store_signed_integer (buf, TYPE_LENGTH (type), byte_order, addr);
|
||
}
|
||
|
||
/* See value.h. */
|
||
|
||
enum symbol_needs_kind
|
||
symbol_read_needs (struct symbol *sym)
|
||
{
|
||
if (SYMBOL_COMPUTED_OPS (sym) != NULL)
|
||
return SYMBOL_COMPUTED_OPS (sym)->get_symbol_read_needs (sym);
|
||
|
||
switch (SYMBOL_CLASS (sym))
|
||
{
|
||
/* All cases listed explicitly so that gcc -Wall will detect it if
|
||
we failed to consider one. */
|
||
case LOC_COMPUTED:
|
||
gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method"));
|
||
|
||
case LOC_REGISTER:
|
||
case LOC_ARG:
|
||
case LOC_REF_ARG:
|
||
case LOC_REGPARM_ADDR:
|
||
case LOC_LOCAL:
|
||
return SYMBOL_NEEDS_FRAME;
|
||
|
||
case LOC_UNDEF:
|
||
case LOC_CONST:
|
||
case LOC_STATIC:
|
||
case LOC_TYPEDEF:
|
||
|
||
case LOC_LABEL:
|
||
/* Getting the address of a label can be done independently of the block,
|
||
even if some *uses* of that address wouldn't work so well without
|
||
the right frame. */
|
||
|
||
case LOC_BLOCK:
|
||
case LOC_CONST_BYTES:
|
||
case LOC_UNRESOLVED:
|
||
case LOC_OPTIMIZED_OUT:
|
||
return SYMBOL_NEEDS_NONE;
|
||
}
|
||
return SYMBOL_NEEDS_FRAME;
|
||
}
|
||
|
||
/* See value.h. */
|
||
|
||
int
|
||
symbol_read_needs_frame (struct symbol *sym)
|
||
{
|
||
return symbol_read_needs (sym) == SYMBOL_NEEDS_FRAME;
|
||
}
|
||
|
||
/* Private data to be used with minsym_lookup_iterator_cb. */
|
||
|
||
struct minsym_lookup_data
|
||
{
|
||
/* The name of the minimal symbol we are searching for. */
|
||
const char *name;
|
||
|
||
/* The field where the callback should store the minimal symbol
|
||
if found. It should be initialized to NULL before the search
|
||
is started. */
|
||
struct bound_minimal_symbol result;
|
||
};
|
||
|
||
/* A callback function for gdbarch_iterate_over_objfiles_in_search_order.
|
||
It searches by name for a minimal symbol within the given OBJFILE.
|
||
The arguments are passed via CB_DATA, which in reality is a pointer
|
||
to struct minsym_lookup_data. */
|
||
|
||
static int
|
||
minsym_lookup_iterator_cb (struct objfile *objfile, void *cb_data)
|
||
{
|
||
struct minsym_lookup_data *data = (struct minsym_lookup_data *) cb_data;
|
||
|
||
gdb_assert (data->result.minsym == NULL);
|
||
|
||
data->result = lookup_minimal_symbol (data->name, NULL, objfile);
|
||
|
||
/* The iterator should stop iff a match was found. */
|
||
return (data->result.minsym != NULL);
|
||
}
|
||
|
||
/* Given static link expression and the frame it lives in, look for the frame
|
||
the static links points to and return it. Return NULL if we could not find
|
||
such a frame. */
|
||
|
||
static struct frame_info *
|
||
follow_static_link (struct frame_info *frame,
|
||
const struct dynamic_prop *static_link)
|
||
{
|
||
CORE_ADDR upper_frame_base;
|
||
|
||
if (!dwarf2_evaluate_property (static_link, frame, NULL, &upper_frame_base))
|
||
return NULL;
|
||
|
||
/* Now climb up the stack frame until we reach the frame we are interested
|
||
in. */
|
||
for (; frame != NULL; frame = get_prev_frame (frame))
|
||
{
|
||
struct symbol *framefunc = get_frame_function (frame);
|
||
|
||
/* Stacks can be quite deep: give the user a chance to stop this. */
|
||
QUIT;
|
||
|
||
/* If we don't know how to compute FRAME's base address, don't give up:
|
||
maybe the frame we are looking for is upper in the stace frame. */
|
||
if (framefunc != NULL
|
||
&& SYMBOL_BLOCK_OPS (framefunc) != NULL
|
||
&& SYMBOL_BLOCK_OPS (framefunc)->get_frame_base != NULL
|
||
&& (SYMBOL_BLOCK_OPS (framefunc)->get_frame_base (framefunc, frame)
|
||
== upper_frame_base))
|
||
break;
|
||
}
|
||
|
||
return frame;
|
||
}
|
||
|
||
/* Assuming VAR is a symbol that can be reached from FRAME thanks to lexical
|
||
rules, look for the frame that is actually hosting VAR and return it. If,
|
||
for some reason, we found no such frame, return NULL.
|
||
|
||
This kind of computation is necessary to correctly handle lexically nested
|
||
functions.
|
||
|
||
Note that in some cases, we know what scope VAR comes from but we cannot
|
||
reach the specific frame that hosts the instance of VAR we are looking for.
|
||
For backward compatibility purposes (with old compilers), we then look for
|
||
the first frame that can host it. */
|
||
|
||
static struct frame_info *
|
||
get_hosting_frame (struct symbol *var, const struct block *var_block,
|
||
struct frame_info *frame)
|
||
{
|
||
const struct block *frame_block = NULL;
|
||
|
||
if (!symbol_read_needs_frame (var))
|
||
return NULL;
|
||
|
||
/* Some symbols for local variables have no block: this happens when they are
|
||
not produced by a debug information reader, for instance when GDB creates
|
||
synthetic symbols. Without block information, we must assume they are
|
||
local to FRAME. In this case, there is nothing to do. */
|
||
else if (var_block == NULL)
|
||
return frame;
|
||
|
||
/* We currently assume that all symbols with a location list need a frame.
|
||
This is true in practice because selecting the location description
|
||
requires to compute the CFA, hence requires a frame. However we have
|
||
tests that embed global/static symbols with null location lists.
|
||
We want to get <optimized out> instead of <frame required> when evaluating
|
||
them so return a frame instead of raising an error. */
|
||
else if (var_block == block_global_block (var_block)
|
||
|| var_block == block_static_block (var_block))
|
||
return frame;
|
||
|
||
/* We have to handle the "my_func::my_local_var" notation. This requires us
|
||
to look for upper frames when we find no block for the current frame: here
|
||
and below, handle when frame_block == NULL. */
|
||
if (frame != NULL)
|
||
frame_block = get_frame_block (frame, NULL);
|
||
|
||
/* Climb up the call stack until reaching the frame we are looking for. */
|
||
while (frame != NULL && frame_block != var_block)
|
||
{
|
||
/* Stacks can be quite deep: give the user a chance to stop this. */
|
||
QUIT;
|
||
|
||
if (frame_block == NULL)
|
||
{
|
||
frame = get_prev_frame (frame);
|
||
if (frame == NULL)
|
||
break;
|
||
frame_block = get_frame_block (frame, NULL);
|
||
}
|
||
|
||
/* If we failed to find the proper frame, fallback to the heuristic
|
||
method below. */
|
||
else if (frame_block == block_global_block (frame_block))
|
||
{
|
||
frame = NULL;
|
||
break;
|
||
}
|
||
|
||
/* Assuming we have a block for this frame: if we are at the function
|
||
level, the immediate upper lexical block is in an outer function:
|
||
follow the static link. */
|
||
else if (BLOCK_FUNCTION (frame_block))
|
||
{
|
||
const struct dynamic_prop *static_link
|
||
= block_static_link (frame_block);
|
||
int could_climb_up = 0;
|
||
|
||
if (static_link != NULL)
|
||
{
|
||
frame = follow_static_link (frame, static_link);
|
||
if (frame != NULL)
|
||
{
|
||
frame_block = get_frame_block (frame, NULL);
|
||
could_climb_up = frame_block != NULL;
|
||
}
|
||
}
|
||
if (!could_climb_up)
|
||
{
|
||
frame = NULL;
|
||
break;
|
||
}
|
||
}
|
||
|
||
else
|
||
/* We must be in some function nested lexical block. Just get the
|
||
outer block: both must share the same frame. */
|
||
frame_block = BLOCK_SUPERBLOCK (frame_block);
|
||
}
|
||
|
||
/* Old compilers may not provide a static link, or they may provide an
|
||
invalid one. For such cases, fallback on the old way to evaluate
|
||
non-local references: just climb up the call stack and pick the first
|
||
frame that contains the variable we are looking for. */
|
||
if (frame == NULL)
|
||
{
|
||
frame = block_innermost_frame (var_block);
|
||
if (frame == NULL)
|
||
{
|
||
if (BLOCK_FUNCTION (var_block)
|
||
&& !block_inlined_p (var_block)
|
||
&& SYMBOL_PRINT_NAME (BLOCK_FUNCTION (var_block)))
|
||
error (_("No frame is currently executing in block %s."),
|
||
SYMBOL_PRINT_NAME (BLOCK_FUNCTION (var_block)));
|
||
else
|
||
error (_("No frame is currently executing in specified"
|
||
" block"));
|
||
}
|
||
}
|
||
|
||
return frame;
|
||
}
|
||
|
||
/* A default implementation for the "la_read_var_value" hook in
|
||
the language vector which should work in most situations. */
|
||
|
||
struct value *
|
||
default_read_var_value (struct symbol *var, const struct block *var_block,
|
||
struct frame_info *frame)
|
||
{
|
||
struct value *v;
|
||
struct type *type = SYMBOL_TYPE (var);
|
||
CORE_ADDR addr;
|
||
enum symbol_needs_kind sym_need;
|
||
|
||
/* Call check_typedef on our type to make sure that, if TYPE is
|
||
a TYPE_CODE_TYPEDEF, its length is set to the length of the target type
|
||
instead of zero. However, we do not replace the typedef type by the
|
||
target type, because we want to keep the typedef in order to be able to
|
||
set the returned value type description correctly. */
|
||
check_typedef (type);
|
||
|
||
sym_need = symbol_read_needs (var);
|
||
if (sym_need == SYMBOL_NEEDS_FRAME)
|
||
gdb_assert (frame != NULL);
|
||
else if (sym_need == SYMBOL_NEEDS_REGISTERS && !target_has_registers)
|
||
error (_("Cannot read `%s' without registers"), SYMBOL_PRINT_NAME (var));
|
||
|
||
if (frame != NULL)
|
||
frame = get_hosting_frame (var, var_block, frame);
|
||
|
||
if (SYMBOL_COMPUTED_OPS (var) != NULL)
|
||
return SYMBOL_COMPUTED_OPS (var)->read_variable (var, frame);
|
||
|
||
switch (SYMBOL_CLASS (var))
|
||
{
|
||
case LOC_CONST:
|
||
if (is_dynamic_type (type))
|
||
{
|
||
/* Value is a constant byte-sequence and needs no memory access. */
|
||
type = resolve_dynamic_type (type, NULL, /* Unused address. */ 0);
|
||
}
|
||
/* Put the constant back in target format. */
|
||
v = allocate_value (type);
|
||
store_signed_integer (value_contents_raw (v), TYPE_LENGTH (type),
|
||
gdbarch_byte_order (get_type_arch (type)),
|
||
(LONGEST) SYMBOL_VALUE (var));
|
||
VALUE_LVAL (v) = not_lval;
|
||
return v;
|
||
|
||
case LOC_LABEL:
|
||
/* Put the constant back in target format. */
|
||
v = allocate_value (type);
|
||
if (overlay_debugging)
|
||
{
|
||
addr
|
||
= symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
|
||
SYMBOL_OBJ_SECTION (symbol_objfile (var),
|
||
var));
|
||
|
||
store_typed_address (value_contents_raw (v), type, addr);
|
||
}
|
||
else
|
||
store_typed_address (value_contents_raw (v), type,
|
||
SYMBOL_VALUE_ADDRESS (var));
|
||
VALUE_LVAL (v) = not_lval;
|
||
return v;
|
||
|
||
case LOC_CONST_BYTES:
|
||
if (is_dynamic_type (type))
|
||
{
|
||
/* Value is a constant byte-sequence and needs no memory access. */
|
||
type = resolve_dynamic_type (type, NULL, /* Unused address. */ 0);
|
||
}
|
||
v = allocate_value (type);
|
||
memcpy (value_contents_raw (v), SYMBOL_VALUE_BYTES (var),
|
||
TYPE_LENGTH (type));
|
||
VALUE_LVAL (v) = not_lval;
|
||
return v;
|
||
|
||
case LOC_STATIC:
|
||
if (overlay_debugging)
|
||
addr = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
|
||
SYMBOL_OBJ_SECTION (symbol_objfile (var),
|
||
var));
|
||
else
|
||
addr = SYMBOL_VALUE_ADDRESS (var);
|
||
break;
|
||
|
||
case LOC_ARG:
|
||
addr = get_frame_args_address (frame);
|
||
if (!addr)
|
||
error (_("Unknown argument list address for `%s'."),
|
||
SYMBOL_PRINT_NAME (var));
|
||
addr += SYMBOL_VALUE (var);
|
||
break;
|
||
|
||
case LOC_REF_ARG:
|
||
{
|
||
struct value *ref;
|
||
CORE_ADDR argref;
|
||
|
||
argref = get_frame_args_address (frame);
|
||
if (!argref)
|
||
error (_("Unknown argument list address for `%s'."),
|
||
SYMBOL_PRINT_NAME (var));
|
||
argref += SYMBOL_VALUE (var);
|
||
ref = value_at (lookup_pointer_type (type), argref);
|
||
addr = value_as_address (ref);
|
||
break;
|
||
}
|
||
|
||
case LOC_LOCAL:
|
||
addr = get_frame_locals_address (frame);
|
||
addr += SYMBOL_VALUE (var);
|
||
break;
|
||
|
||
case LOC_TYPEDEF:
|
||
error (_("Cannot look up value of a typedef `%s'."),
|
||
SYMBOL_PRINT_NAME (var));
|
||
break;
|
||
|
||
case LOC_BLOCK:
|
||
if (overlay_debugging)
|
||
addr = symbol_overlayed_address
|
||
(BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (var)),
|
||
SYMBOL_OBJ_SECTION (symbol_objfile (var), var));
|
||
else
|
||
addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (var));
|
||
break;
|
||
|
||
case LOC_REGISTER:
|
||
case LOC_REGPARM_ADDR:
|
||
{
|
||
int regno = SYMBOL_REGISTER_OPS (var)
|
||
->register_number (var, get_frame_arch (frame));
|
||
struct value *regval;
|
||
|
||
if (SYMBOL_CLASS (var) == LOC_REGPARM_ADDR)
|
||
{
|
||
regval = value_from_register (lookup_pointer_type (type),
|
||
regno,
|
||
frame);
|
||
|
||
if (regval == NULL)
|
||
error (_("Value of register variable not available for `%s'."),
|
||
SYMBOL_PRINT_NAME (var));
|
||
|
||
addr = value_as_address (regval);
|
||
}
|
||
else
|
||
{
|
||
regval = value_from_register (type, regno, frame);
|
||
|
||
if (regval == NULL)
|
||
error (_("Value of register variable not available for `%s'."),
|
||
SYMBOL_PRINT_NAME (var));
|
||
return regval;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case LOC_COMPUTED:
|
||
gdb_assert_not_reached (_("LOC_COMPUTED variable missing a method"));
|
||
|
||
case LOC_UNRESOLVED:
|
||
{
|
||
struct minsym_lookup_data lookup_data;
|
||
struct minimal_symbol *msym;
|
||
struct obj_section *obj_section;
|
||
|
||
memset (&lookup_data, 0, sizeof (lookup_data));
|
||
lookup_data.name = SYMBOL_LINKAGE_NAME (var);
|
||
|
||
gdbarch_iterate_over_objfiles_in_search_order
|
||
(symbol_arch (var),
|
||
minsym_lookup_iterator_cb, &lookup_data,
|
||
symbol_objfile (var));
|
||
msym = lookup_data.result.minsym;
|
||
|
||
/* If we can't find the minsym there's a problem in the symbol info.
|
||
The symbol exists in the debug info, but it's missing in the minsym
|
||
table. */
|
||
if (msym == NULL)
|
||
{
|
||
const char *flavour_name
|
||
= objfile_flavour_name (symbol_objfile (var));
|
||
|
||
/* We can't get here unless we've opened the file, so flavour_name
|
||
can't be NULL. */
|
||
gdb_assert (flavour_name != NULL);
|
||
error (_("Missing %s symbol \"%s\"."),
|
||
flavour_name, SYMBOL_LINKAGE_NAME (var));
|
||
}
|
||
obj_section = MSYMBOL_OBJ_SECTION (lookup_data.result.objfile, msym);
|
||
/* Relocate address, unless there is no section or the variable is
|
||
a TLS variable. */
|
||
if (obj_section == NULL
|
||
|| (obj_section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0)
|
||
addr = MSYMBOL_VALUE_RAW_ADDRESS (msym);
|
||
else
|
||
addr = BMSYMBOL_VALUE_ADDRESS (lookup_data.result);
|
||
if (overlay_debugging)
|
||
addr = symbol_overlayed_address (addr, obj_section);
|
||
/* Determine address of TLS variable. */
|
||
if (obj_section
|
||
&& (obj_section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0)
|
||
addr = target_translate_tls_address (obj_section->objfile, addr);
|
||
}
|
||
break;
|
||
|
||
case LOC_OPTIMIZED_OUT:
|
||
if (is_dynamic_type (type))
|
||
type = resolve_dynamic_type (type, NULL, /* Unused address. */ 0);
|
||
return allocate_optimized_out_value (type);
|
||
|
||
default:
|
||
error (_("Cannot look up value of a botched symbol `%s'."),
|
||
SYMBOL_PRINT_NAME (var));
|
||
break;
|
||
}
|
||
|
||
v = value_at_lazy (type, addr);
|
||
return v;
|
||
}
|
||
|
||
/* Calls VAR's language la_read_var_value hook with the given arguments. */
|
||
|
||
struct value *
|
||
read_var_value (struct symbol *var, const struct block *var_block,
|
||
struct frame_info *frame)
|
||
{
|
||
const struct language_defn *lang = language_def (SYMBOL_LANGUAGE (var));
|
||
|
||
gdb_assert (lang != NULL);
|
||
gdb_assert (lang->la_read_var_value != NULL);
|
||
|
||
return lang->la_read_var_value (var, var_block, frame);
|
||
}
|
||
|
||
/* Install default attributes for register values. */
|
||
|
||
struct value *
|
||
default_value_from_register (struct gdbarch *gdbarch, struct type *type,
|
||
int regnum, struct frame_id frame_id)
|
||
{
|
||
int len = TYPE_LENGTH (type);
|
||
struct value *value = allocate_value (type);
|
||
struct frame_info *frame;
|
||
|
||
VALUE_LVAL (value) = lval_register;
|
||
frame = frame_find_by_id (frame_id);
|
||
|
||
if (frame == NULL)
|
||
frame_id = null_frame_id;
|
||
else
|
||
frame_id = get_frame_id (get_next_frame_sentinel_okay (frame));
|
||
|
||
VALUE_NEXT_FRAME_ID (value) = frame_id;
|
||
VALUE_REGNUM (value) = regnum;
|
||
|
||
/* Any structure stored in more than one register will always be
|
||
an integral number of registers. Otherwise, you need to do
|
||
some fiddling with the last register copied here for little
|
||
endian machines. */
|
||
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG
|
||
&& len < register_size (gdbarch, regnum))
|
||
/* Big-endian, and we want less than full size. */
|
||
set_value_offset (value, register_size (gdbarch, regnum) - len);
|
||
else
|
||
set_value_offset (value, 0);
|
||
|
||
return value;
|
||
}
|
||
|
||
/* VALUE must be an lval_register value. If regnum is the value's
|
||
associated register number, and len the length of the values type,
|
||
read one or more registers in FRAME, starting with register REGNUM,
|
||
until we've read LEN bytes.
|
||
|
||
If any of the registers we try to read are optimized out, then mark the
|
||
complete resulting value as optimized out. */
|
||
|
||
void
|
||
read_frame_register_value (struct value *value, struct frame_info *frame)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
LONGEST offset = 0;
|
||
LONGEST reg_offset = value_offset (value);
|
||
int regnum = VALUE_REGNUM (value);
|
||
int len = type_length_units (check_typedef (value_type (value)));
|
||
|
||
gdb_assert (VALUE_LVAL (value) == lval_register);
|
||
|
||
/* Skip registers wholly inside of REG_OFFSET. */
|
||
while (reg_offset >= register_size (gdbarch, regnum))
|
||
{
|
||
reg_offset -= register_size (gdbarch, regnum);
|
||
regnum++;
|
||
}
|
||
|
||
/* Copy the data. */
|
||
while (len > 0)
|
||
{
|
||
struct value *regval = get_frame_register_value (frame, regnum);
|
||
int reg_len = type_length_units (value_type (regval)) - reg_offset;
|
||
|
||
/* If the register length is larger than the number of bytes
|
||
remaining to copy, then only copy the appropriate bytes. */
|
||
if (reg_len > len)
|
||
reg_len = len;
|
||
|
||
value_contents_copy (value, offset, regval, reg_offset, reg_len);
|
||
|
||
offset += reg_len;
|
||
len -= reg_len;
|
||
reg_offset = 0;
|
||
regnum++;
|
||
}
|
||
}
|
||
|
||
/* Return a value of type TYPE, stored in register REGNUM, in frame FRAME. */
|
||
|
||
struct value *
|
||
value_from_register (struct type *type, int regnum, struct frame_info *frame)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
struct type *type1 = check_typedef (type);
|
||
struct value *v;
|
||
|
||
if (gdbarch_convert_register_p (gdbarch, regnum, type1))
|
||
{
|
||
int optim, unavail, ok;
|
||
|
||
/* The ISA/ABI need to something weird when obtaining the
|
||
specified value from this register. It might need to
|
||
re-order non-adjacent, starting with REGNUM (see MIPS and
|
||
i386). It might need to convert the [float] register into
|
||
the corresponding [integer] type (see Alpha). The assumption
|
||
is that gdbarch_register_to_value populates the entire value
|
||
including the location. */
|
||
v = allocate_value (type);
|
||
VALUE_LVAL (v) = lval_register;
|
||
VALUE_NEXT_FRAME_ID (v) = get_frame_id (get_next_frame_sentinel_okay (frame));
|
||
VALUE_REGNUM (v) = regnum;
|
||
ok = gdbarch_register_to_value (gdbarch, frame, regnum, type1,
|
||
value_contents_raw (v), &optim,
|
||
&unavail);
|
||
|
||
if (!ok)
|
||
{
|
||
if (optim)
|
||
mark_value_bytes_optimized_out (v, 0, TYPE_LENGTH (type));
|
||
if (unavail)
|
||
mark_value_bytes_unavailable (v, 0, TYPE_LENGTH (type));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Construct the value. */
|
||
v = gdbarch_value_from_register (gdbarch, type,
|
||
regnum, get_frame_id (frame));
|
||
|
||
/* Get the data. */
|
||
read_frame_register_value (v, frame);
|
||
}
|
||
|
||
return v;
|
||
}
|
||
|
||
/* Return contents of register REGNUM in frame FRAME as address.
|
||
Will abort if register value is not available. */
|
||
|
||
CORE_ADDR
|
||
address_from_register (int regnum, struct frame_info *frame)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
struct type *type = builtin_type (gdbarch)->builtin_data_ptr;
|
||
struct value *value;
|
||
CORE_ADDR result;
|
||
int regnum_max_excl = gdbarch_num_cooked_regs (gdbarch);
|
||
|
||
if (regnum < 0 || regnum >= regnum_max_excl)
|
||
error (_("Invalid register #%d, expecting 0 <= # < %d"), regnum,
|
||
regnum_max_excl);
|
||
|
||
/* This routine may be called during early unwinding, at a time
|
||
where the ID of FRAME is not yet known. Calling value_from_register
|
||
would therefore abort in get_frame_id. However, since we only need
|
||
a temporary value that is never used as lvalue, we actually do not
|
||
really need to set its VALUE_NEXT_FRAME_ID. Therefore, we re-implement
|
||
the core of value_from_register, but use the null_frame_id. */
|
||
|
||
/* Some targets require a special conversion routine even for plain
|
||
pointer types. Avoid constructing a value object in those cases. */
|
||
if (gdbarch_convert_register_p (gdbarch, regnum, type))
|
||
{
|
||
gdb_byte *buf = (gdb_byte *) alloca (TYPE_LENGTH (type));
|
||
int optim, unavail, ok;
|
||
|
||
ok = gdbarch_register_to_value (gdbarch, frame, regnum, type,
|
||
buf, &optim, &unavail);
|
||
if (!ok)
|
||
{
|
||
/* This function is used while computing a location expression.
|
||
Complain about the value being optimized out, rather than
|
||
letting value_as_address complain about some random register
|
||
the expression depends on not being saved. */
|
||
error_value_optimized_out ();
|
||
}
|
||
|
||
return unpack_long (type, buf);
|
||
}
|
||
|
||
value = gdbarch_value_from_register (gdbarch, type, regnum, null_frame_id);
|
||
read_frame_register_value (value, frame);
|
||
|
||
if (value_optimized_out (value))
|
||
{
|
||
/* This function is used while computing a location expression.
|
||
Complain about the value being optimized out, rather than
|
||
letting value_as_address complain about some random register
|
||
the expression depends on not being saved. */
|
||
error_value_optimized_out ();
|
||
}
|
||
|
||
result = value_as_address (value);
|
||
release_value (value);
|
||
|
||
return result;
|
||
}
|
||
|
||
#if GDB_SELF_TEST
|
||
namespace selftests {
|
||
namespace findvar_tests {
|
||
|
||
/* Function to test copy_integer_to_size. Store SOURCE_VAL with size
|
||
SOURCE_SIZE to a buffer, making sure no sign extending happens at this
|
||
stage. Copy buffer to a new buffer using copy_integer_to_size. Extract
|
||
copied value and compare to DEST_VALU. Copy again with a signed
|
||
copy_integer_to_size and compare to DEST_VALS. Do everything for both
|
||
LITTLE and BIG target endians. Use unsigned values throughout to make
|
||
sure there are no implicit sign extensions. */
|
||
|
||
static void
|
||
do_cint_test (ULONGEST dest_valu, ULONGEST dest_vals, int dest_size,
|
||
ULONGEST src_val, int src_size)
|
||
{
|
||
for (int i = 0; i < 2 ; i++)
|
||
{
|
||
gdb_byte srcbuf[sizeof (ULONGEST)] = {};
|
||
gdb_byte destbuf[sizeof (ULONGEST)] = {};
|
||
enum bfd_endian byte_order = i ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
|
||
|
||
/* Fill the src buffer (and later the dest buffer) with non-zero junk,
|
||
to ensure zero extensions aren't hidden. */
|
||
memset (srcbuf, 0xaa, sizeof (srcbuf));
|
||
|
||
/* Store (and later extract) using unsigned to ensure there are no sign
|
||
extensions. */
|
||
store_unsigned_integer (srcbuf, src_size, byte_order, src_val);
|
||
|
||
/* Test unsigned. */
|
||
memset (destbuf, 0xaa, sizeof (destbuf));
|
||
copy_integer_to_size (destbuf, dest_size, srcbuf, src_size, false,
|
||
byte_order);
|
||
SELF_CHECK (dest_valu == extract_unsigned_integer (destbuf, dest_size,
|
||
byte_order));
|
||
|
||
/* Test signed. */
|
||
memset (destbuf, 0xaa, sizeof (destbuf));
|
||
copy_integer_to_size (destbuf, dest_size, srcbuf, src_size, true,
|
||
byte_order);
|
||
SELF_CHECK (dest_vals == extract_unsigned_integer (destbuf, dest_size,
|
||
byte_order));
|
||
}
|
||
}
|
||
|
||
static void
|
||
copy_integer_to_size_test ()
|
||
{
|
||
/* Destination is bigger than the source, which has the signed bit unset. */
|
||
do_cint_test (0x12345678, 0x12345678, 8, 0x12345678, 4);
|
||
do_cint_test (0x345678, 0x345678, 8, 0x12345678, 3);
|
||
|
||
/* Destination is bigger than the source, which has the signed bit set. */
|
||
do_cint_test (0xdeadbeef, 0xffffffffdeadbeef, 8, 0xdeadbeef, 4);
|
||
do_cint_test (0xadbeef, 0xffffffffffadbeef, 8, 0xdeadbeef, 3);
|
||
|
||
/* Destination is smaller than the source. */
|
||
do_cint_test (0x5678, 0x5678, 2, 0x12345678, 3);
|
||
do_cint_test (0xbeef, 0xbeef, 2, 0xdeadbeef, 3);
|
||
|
||
/* Destination and source are the same size. */
|
||
do_cint_test (0x8765432112345678, 0x8765432112345678, 8, 0x8765432112345678,
|
||
8);
|
||
do_cint_test (0x432112345678, 0x432112345678, 6, 0x8765432112345678, 6);
|
||
do_cint_test (0xfeedbeaddeadbeef, 0xfeedbeaddeadbeef, 8, 0xfeedbeaddeadbeef,
|
||
8);
|
||
do_cint_test (0xbeaddeadbeef, 0xbeaddeadbeef, 6, 0xfeedbeaddeadbeef, 6);
|
||
|
||
/* Destination is bigger than the source. Source is bigger than 32bits. */
|
||
do_cint_test (0x3412345678, 0x3412345678, 8, 0x3412345678, 6);
|
||
do_cint_test (0xff12345678, 0xff12345678, 8, 0xff12345678, 6);
|
||
do_cint_test (0x432112345678, 0x432112345678, 8, 0x8765432112345678, 6);
|
||
do_cint_test (0xff2112345678, 0xffffff2112345678, 8, 0xffffff2112345678, 6);
|
||
}
|
||
|
||
} // namespace findvar_test
|
||
} // namespace selftests
|
||
|
||
#endif
|
||
|
||
void
|
||
_initialize_findvar (void)
|
||
{
|
||
#if GDB_SELF_TEST
|
||
selftests::register_test
|
||
("copy_integer_to_size",
|
||
selftests::findvar_tests::copy_integer_to_size_test);
|
||
#endif
|
||
}
|