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.
458 lines
13 KiB
C
458 lines
13 KiB
C
/* Target-dependent code for FreeBSD/i386.
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Copyright (C) 2003-2019 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 "arch-utils.h"
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#include "gdbcore.h"
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#include "osabi.h"
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#include "regcache.h"
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#include "regset.h"
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#include "i386-fbsd-tdep.h"
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#include "gdbsupport/x86-xstate.h"
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#include "i386-tdep.h"
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#include "i387-tdep.h"
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#include "fbsd-tdep.h"
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#include "solib-svr4.h"
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/* Support for signal handlers. */
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/* Return whether THIS_FRAME corresponds to a FreeBSD sigtramp
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routine. */
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/* FreeBSD/i386 supports three different signal trampolines, one for
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versions before 4.0, a second for 4.x, and a third for 5.0 and
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later. To complicate matters, FreeBSD/i386 binaries running under
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an amd64 kernel use a different set of trampolines. These
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trampolines differ from the i386 kernel trampolines in that they
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omit a middle section that conditionally restores %gs. */
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static const gdb_byte i386fbsd_sigtramp_start[] =
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{
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0x8d, 0x44, 0x24, 0x20, /* lea SIGF_UC(%esp),%eax */
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0x50 /* pushl %eax */
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};
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static const gdb_byte i386fbsd_sigtramp_middle[] =
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{
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0xf7, 0x40, 0x54, 0x00, 0x00, 0x02, 0x00,
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/* testl $PSL_VM,UC_EFLAGS(%eax) */
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0x75, 0x03, /* jne +3 */
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0x8e, 0x68, 0x14 /* mov UC_GS(%eax),%gs */
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};
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static const gdb_byte i386fbsd_sigtramp_end[] =
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{
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0xb8, 0xa1, 0x01, 0x00, 0x00, /* movl $SYS_sigreturn,%eax */
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0x50, /* pushl %eax */
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0xcd, 0x80 /* int $0x80 */
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};
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static const gdb_byte i386fbsd_freebsd4_sigtramp_start[] =
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{
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0x8d, 0x44, 0x24, 0x14, /* lea SIGF_UC4(%esp),%eax */
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0x50 /* pushl %eax */
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};
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static const gdb_byte i386fbsd_freebsd4_sigtramp_middle[] =
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{
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0xf7, 0x40, 0x54, 0x00, 0x00, 0x02, 0x00,
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/* testl $PSL_VM,UC4_EFLAGS(%eax) */
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0x75, 0x03, /* jne +3 */
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0x8e, 0x68, 0x14 /* mov UC4_GS(%eax),%gs */
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};
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static const gdb_byte i386fbsd_freebsd4_sigtramp_end[] =
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{
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0xb8, 0x58, 0x01, 0x00, 0x00, /* movl $344,%eax */
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0x50, /* pushl %eax */
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0xcd, 0x80 /* int $0x80 */
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};
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static const gdb_byte i386fbsd_osigtramp_start[] =
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{
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0x8d, 0x44, 0x24, 0x14, /* lea SIGF_SC(%esp),%eax */
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0x50 /* pushl %eax */
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};
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static const gdb_byte i386fbsd_osigtramp_middle[] =
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{
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0xf7, 0x40, 0x18, 0x00, 0x00, 0x02, 0x00,
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/* testl $PSL_VM,SC_PS(%eax) */
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0x75, 0x03, /* jne +3 */
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0x8e, 0x68, 0x44 /* mov SC_GS(%eax),%gs */
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};
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static const gdb_byte i386fbsd_osigtramp_end[] =
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{
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0xb8, 0x67, 0x00, 0x00, 0x00, /* movl $103,%eax */
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0x50, /* pushl %eax */
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0xcd, 0x80 /* int $0x80 */
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};
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/* The three different trampolines are all the same size. */
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gdb_static_assert (sizeof i386fbsd_sigtramp_start
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== sizeof i386fbsd_freebsd4_sigtramp_start);
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gdb_static_assert (sizeof i386fbsd_sigtramp_start
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== sizeof i386fbsd_osigtramp_start);
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gdb_static_assert (sizeof i386fbsd_sigtramp_middle
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== sizeof i386fbsd_freebsd4_sigtramp_middle);
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gdb_static_assert (sizeof i386fbsd_sigtramp_middle
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== sizeof i386fbsd_osigtramp_middle);
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gdb_static_assert (sizeof i386fbsd_sigtramp_end
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== sizeof i386fbsd_freebsd4_sigtramp_end);
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gdb_static_assert (sizeof i386fbsd_sigtramp_end
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== sizeof i386fbsd_osigtramp_end);
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/* We assume that the middle is the largest chunk below. */
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gdb_static_assert (sizeof i386fbsd_sigtramp_middle
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> sizeof i386fbsd_sigtramp_start);
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gdb_static_assert (sizeof i386fbsd_sigtramp_middle
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> sizeof i386fbsd_sigtramp_end);
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static int
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i386fbsd_sigtramp_p (struct frame_info *this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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gdb_byte buf[sizeof i386fbsd_sigtramp_middle];
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const gdb_byte *middle, *end;
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/* Look for a matching start. */
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if (!safe_frame_unwind_memory (this_frame, pc, buf,
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sizeof i386fbsd_sigtramp_start))
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return 0;
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if (memcmp (buf, i386fbsd_sigtramp_start, sizeof i386fbsd_sigtramp_start)
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== 0)
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{
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middle = i386fbsd_sigtramp_middle;
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end = i386fbsd_sigtramp_end;
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}
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else if (memcmp (buf, i386fbsd_freebsd4_sigtramp_start,
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sizeof i386fbsd_freebsd4_sigtramp_start) == 0)
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{
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middle = i386fbsd_freebsd4_sigtramp_middle;
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end = i386fbsd_freebsd4_sigtramp_end;
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}
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else if (memcmp (buf, i386fbsd_osigtramp_start,
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sizeof i386fbsd_osigtramp_start) == 0)
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{
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middle = i386fbsd_osigtramp_middle;
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end = i386fbsd_osigtramp_end;
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}
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else
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return 0;
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/* Since the end is shorter than the middle, check for a matching end
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next. */
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pc += sizeof i386fbsd_sigtramp_start;
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if (!safe_frame_unwind_memory (this_frame, pc, buf,
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sizeof i386fbsd_sigtramp_end))
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return 0;
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if (memcmp (buf, end, sizeof i386fbsd_sigtramp_end) == 0)
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return 1;
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/* If the end didn't match, check for a matching middle. */
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if (!safe_frame_unwind_memory (this_frame, pc, buf,
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sizeof i386fbsd_sigtramp_middle))
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return 0;
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if (memcmp (buf, middle, sizeof i386fbsd_sigtramp_middle) != 0)
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return 0;
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/* The middle matched, check for a matching end. */
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pc += sizeof i386fbsd_sigtramp_middle;
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if (!safe_frame_unwind_memory (this_frame, pc, buf,
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sizeof i386fbsd_sigtramp_end))
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return 0;
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if (memcmp (buf, end, sizeof i386fbsd_sigtramp_end) != 0)
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return 0;
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return 1;
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}
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/* FreeBSD 3.0-RELEASE or later. */
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/* From <machine/reg.h>. */
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static int i386fbsd_r_reg_offset[] =
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{
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9 * 4, 8 * 4, 7 * 4, 6 * 4, /* %eax, %ecx, %edx, %ebx */
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15 * 4, 4 * 4, /* %esp, %ebp */
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3 * 4, 2 * 4, /* %esi, %edi */
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12 * 4, 14 * 4, /* %eip, %eflags */
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13 * 4, 16 * 4, /* %cs, %ss */
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1 * 4, 0 * 4, -1, -1 /* %ds, %es, %fs, %gs */
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};
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/* Sigtramp routine location. */
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CORE_ADDR i386fbsd_sigtramp_start_addr;
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CORE_ADDR i386fbsd_sigtramp_end_addr;
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/* From <machine/signal.h>. */
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int i386fbsd_sc_reg_offset[] =
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{
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8 + 14 * 4, /* %eax */
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8 + 13 * 4, /* %ecx */
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8 + 12 * 4, /* %edx */
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8 + 11 * 4, /* %ebx */
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8 + 0 * 4, /* %esp */
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8 + 1 * 4, /* %ebp */
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8 + 10 * 4, /* %esi */
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8 + 9 * 4, /* %edi */
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8 + 3 * 4, /* %eip */
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8 + 4 * 4, /* %eflags */
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8 + 7 * 4, /* %cs */
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8 + 8 * 4, /* %ss */
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8 + 6 * 4, /* %ds */
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8 + 5 * 4, /* %es */
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8 + 15 * 4, /* %fs */
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8 + 16 * 4 /* %gs */
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};
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/* Get XSAVE extended state xcr0 from core dump. */
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uint64_t
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i386fbsd_core_read_xcr0 (bfd *abfd)
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{
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asection *xstate = bfd_get_section_by_name (abfd, ".reg-xstate");
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uint64_t xcr0;
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if (xstate)
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{
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size_t size = bfd_section_size (abfd, xstate);
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/* Check extended state size. */
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if (size < X86_XSTATE_AVX_SIZE)
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xcr0 = X86_XSTATE_SSE_MASK;
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else
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{
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char contents[8];
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if (! bfd_get_section_contents (abfd, xstate, contents,
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I386_FBSD_XSAVE_XCR0_OFFSET,
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8))
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{
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warning (_("Couldn't read `xcr0' bytes from "
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"`.reg-xstate' section in core file."));
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return X86_XSTATE_SSE_MASK;
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}
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xcr0 = bfd_get_64 (abfd, contents);
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}
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}
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else
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xcr0 = X86_XSTATE_SSE_MASK;
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return xcr0;
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}
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/* Implement the core_read_description gdbarch method. */
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static const struct target_desc *
|
|
i386fbsd_core_read_description (struct gdbarch *gdbarch,
|
|
struct target_ops *target,
|
|
bfd *abfd)
|
|
{
|
|
return i386_target_description (i386fbsd_core_read_xcr0 (abfd), true);
|
|
}
|
|
|
|
/* Similar to i386_supply_fpregset, but use XSAVE extended state. */
|
|
|
|
static void
|
|
i386fbsd_supply_xstateregset (const struct regset *regset,
|
|
struct regcache *regcache, int regnum,
|
|
const void *xstateregs, size_t len)
|
|
{
|
|
i387_supply_xsave (regcache, regnum, xstateregs);
|
|
}
|
|
|
|
/* Similar to i386_collect_fpregset, but use XSAVE extended state. */
|
|
|
|
static void
|
|
i386fbsd_collect_xstateregset (const struct regset *regset,
|
|
const struct regcache *regcache,
|
|
int regnum, void *xstateregs, size_t len)
|
|
{
|
|
i387_collect_xsave (regcache, regnum, xstateregs, 1);
|
|
}
|
|
|
|
/* Register set definitions. */
|
|
|
|
static const struct regset i386fbsd_xstateregset =
|
|
{
|
|
NULL,
|
|
i386fbsd_supply_xstateregset,
|
|
i386fbsd_collect_xstateregset
|
|
};
|
|
|
|
/* Iterate over core file register note sections. */
|
|
|
|
static void
|
|
i386fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
|
|
iterate_over_regset_sections_cb *cb,
|
|
void *cb_data,
|
|
const struct regcache *regcache)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
cb (".reg", tdep->sizeof_gregset, tdep->sizeof_gregset, &i386_gregset, NULL,
|
|
cb_data);
|
|
cb (".reg2", tdep->sizeof_fpregset, tdep->sizeof_fpregset, &i386_fpregset,
|
|
NULL, cb_data);
|
|
|
|
if (tdep->xcr0 & X86_XSTATE_AVX)
|
|
cb (".reg-xstate", X86_XSTATE_SIZE (tdep->xcr0),
|
|
X86_XSTATE_SIZE (tdep->xcr0), &i386fbsd_xstateregset,
|
|
"XSAVE extended state", cb_data);
|
|
}
|
|
|
|
/* Implement the get_thread_local_address gdbarch method. */
|
|
|
|
static CORE_ADDR
|
|
i386fbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
|
|
CORE_ADDR lm_addr, CORE_ADDR offset)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
struct regcache *regcache;
|
|
|
|
if (tdep->fsbase_regnum == -1)
|
|
error (_("Unable to fetch %%gsbase"));
|
|
|
|
regcache = get_thread_arch_regcache (ptid, gdbarch);
|
|
|
|
target_fetch_registers (regcache, tdep->fsbase_regnum + 1);
|
|
|
|
ULONGEST gsbase;
|
|
if (regcache->cooked_read (tdep->fsbase_regnum + 1, &gsbase) != REG_VALID)
|
|
error (_("Unable to fetch %%gsbase"));
|
|
|
|
CORE_ADDR dtv_addr = gsbase + gdbarch_ptr_bit (gdbarch) / 8;
|
|
return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset);
|
|
}
|
|
|
|
static void
|
|
i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
/* Obviously FreeBSD is BSD-based. */
|
|
i386bsd_init_abi (info, gdbarch);
|
|
|
|
/* FreeBSD has a different `struct reg', and reserves some space for
|
|
its FPU emulator in `struct fpreg'. */
|
|
tdep->gregset_reg_offset = i386fbsd_r_reg_offset;
|
|
tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd_r_reg_offset);
|
|
tdep->sizeof_gregset = 18 * 4;
|
|
tdep->sizeof_fpregset = 176;
|
|
|
|
/* FreeBSD uses -freg-struct-return by default. */
|
|
tdep->struct_return = reg_struct_return;
|
|
|
|
tdep->sigtramp_p = i386fbsd_sigtramp_p;
|
|
|
|
/* FreeBSD uses a different memory layout. */
|
|
tdep->sigtramp_start = i386fbsd_sigtramp_start_addr;
|
|
tdep->sigtramp_end = i386fbsd_sigtramp_end_addr;
|
|
|
|
/* FreeBSD has a more complete `struct sigcontext'. */
|
|
tdep->sc_reg_offset = i386fbsd_sc_reg_offset;
|
|
tdep->sc_num_regs = ARRAY_SIZE (i386fbsd_sc_reg_offset);
|
|
|
|
i386_elf_init_abi (info, gdbarch);
|
|
|
|
/* FreeBSD uses SVR4-style shared libraries. */
|
|
set_solib_svr4_fetch_link_map_offsets
|
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
|
}
|
|
|
|
/* FreeBSD 4.0-RELEASE or later. */
|
|
|
|
/* From <machine/reg.h>. */
|
|
static int i386fbsd4_r_reg_offset[] =
|
|
{
|
|
10 * 4, 9 * 4, 8 * 4, 7 * 4, /* %eax, %ecx, %edx, %ebx */
|
|
16 * 4, 5 * 4, /* %esp, %ebp */
|
|
4 * 4, 3 * 4, /* %esi, %edi */
|
|
13 * 4, 15 * 4, /* %eip, %eflags */
|
|
14 * 4, 17 * 4, /* %cs, %ss */
|
|
2 * 4, 1 * 4, 0 * 4, 18 * 4 /* %ds, %es, %fs, %gs */
|
|
};
|
|
|
|
/* From <machine/signal.h>. */
|
|
int i386fbsd4_sc_reg_offset[] =
|
|
{
|
|
20 + 11 * 4, /* %eax */
|
|
20 + 10 * 4, /* %ecx */
|
|
20 + 9 * 4, /* %edx */
|
|
20 + 8 * 4, /* %ebx */
|
|
20 + 17 * 4, /* %esp */
|
|
20 + 6 * 4, /* %ebp */
|
|
20 + 5 * 4, /* %esi */
|
|
20 + 4 * 4, /* %edi */
|
|
20 + 14 * 4, /* %eip */
|
|
20 + 16 * 4, /* %eflags */
|
|
20 + 15 * 4, /* %cs */
|
|
20 + 18 * 4, /* %ss */
|
|
20 + 3 * 4, /* %ds */
|
|
20 + 2 * 4, /* %es */
|
|
20 + 1 * 4, /* %fs */
|
|
20 + 0 * 4 /* %gs */
|
|
};
|
|
|
|
static void
|
|
i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
/* Generic FreeBSD support. */
|
|
fbsd_init_abi (info, gdbarch);
|
|
|
|
/* Inherit stuff from older releases. We assume that FreeBSD
|
|
4.0-RELEASE always uses ELF. */
|
|
i386fbsd_init_abi (info, gdbarch);
|
|
|
|
/* FreeBSD 4.0 introduced a new `struct reg'. */
|
|
tdep->gregset_reg_offset = i386fbsd4_r_reg_offset;
|
|
tdep->gregset_num_regs = ARRAY_SIZE (i386fbsd4_r_reg_offset);
|
|
tdep->sizeof_gregset = 19 * 4;
|
|
|
|
/* FreeBSD 4.0 introduced a new `struct sigcontext'. */
|
|
tdep->sc_reg_offset = i386fbsd4_sc_reg_offset;
|
|
tdep->sc_num_regs = ARRAY_SIZE (i386fbsd4_sc_reg_offset);
|
|
|
|
tdep->xsave_xcr0_offset = I386_FBSD_XSAVE_XCR0_OFFSET;
|
|
|
|
/* Iterate over core file register note sections. */
|
|
set_gdbarch_iterate_over_regset_sections
|
|
(gdbarch, i386fbsd_iterate_over_regset_sections);
|
|
|
|
set_gdbarch_core_read_description (gdbarch,
|
|
i386fbsd_core_read_description);
|
|
|
|
set_gdbarch_fetch_tls_load_module_address (gdbarch,
|
|
svr4_fetch_objfile_link_map);
|
|
set_gdbarch_get_thread_local_address (gdbarch,
|
|
i386fbsd_get_thread_local_address);
|
|
}
|
|
|
|
void
|
|
_initialize_i386fbsd_tdep (void)
|
|
{
|
|
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD,
|
|
i386fbsd4_init_abi);
|
|
}
|