2019-01-01 07:01:51 +01:00
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/* Copyright (C) 2010-2019 Free Software Foundation, Inc.
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2010-09-13 21:11:03 +02:00
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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 "server.h"
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#include "lynx-low.h"
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#include <limits.h>
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#include <sys/ptrace.h>
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Rename common to gdbsupport
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.
2019-05-06 04:29:24 +02:00
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#include "gdbsupport/x86-xstate.h"
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2017-09-05 10:54:54 +02:00
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#include "arch/i386.h"
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gdbserver/Windows: crash during connection establishment phase
On Windows, starting a new process with GDBserver seems to work,
in the sense that the program does get started, and GDBserver
confirms that it is listening for GDB to connect. However, as soon as
GDB establishes the connection with GDBserver, and starts discussing
with it, GDBserver crashes, with a SEGV.
This SEGV occurs in remote-utils.c::prepare_resume_reply...
| regp = current_target_desc ()->expedite_regs;
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| while (*regp)
... because, in our case, REGP is NULL.
This patches fixes the issues by adding a parameter to init_target_desc,
in order to make sure that we always provide the list of registers when
we initialize a target description.
gdb/ChangeLog:
PR server/23158:
* regformats/regdat.sh: Adjust script, following the addition
of the new expedite_regs parameter to init_target_desc.
gdb/gdbserver/ChangeLog:
PR server/23158:
* tdesc.h (init_target_desc) <expedite_regs>: New parameter.
* tdesc.c (init_target_desc) <expedite_regs>: New parameter.
Use it to set the expedite_regs field in the given tdesc.
* x86-tdesc.h: New file.
* linux-aarch64-tdesc.c (aarch64_linux_read_description):
Adjust following the addition of the new expedite_regs parameter
to init_target_desc.
* linux-tic6x-low.c (tic6x_read_description): Likewise.
* linux-x86-tdesc.c: #include "x86-tdesc.h".
(i386_linux_read_description, amd64_linux_read_description):
Adjust following the addition of the new expedite_regs parameter
to init_target_desc.
* lynx-i386-low.c: #include "x86-tdesc.h".
(lynx_i386_arch_setup): Adjust following the addition of the new
expedite_regs parameter to init_target_desc.
* nto-x86-low.c: #include "x86-tdesc.h".
(nto_x86_arch_setup): Adjust following the addition of the new
expedite_regs parameter to init_target_desc.
* win32-i386-low.c: #include "x86-tdesc.h".
(i386_arch_setup): Adjust following the addition of the new
expedite_regs parameter to init_target_desc.
2018-05-10 17:27:13 +02:00
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#include "x86-tdesc.h"
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2010-09-13 21:11:03 +02:00
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/* The following two typedefs are defined in a .h file which is not
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in the standard include path (/sys/include/family/x86/ucontext.h),
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2018-05-10 19:01:39 +02:00
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so we just duplicate them here.
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Unfortunately for us, the definition of this structure differs between
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LynxOS 5.x and LynxOS 178. Rather than duplicate the code, we use
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different definitions depending on the target. */
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#ifdef VMOS_DEV
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#define LYNXOS_178
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#endif
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2010-09-13 21:11:03 +02:00
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/* General register context */
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typedef struct usr_econtext {
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uint32_t uec_fault;
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uint32_t uec_es;
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uint32_t uec_ds;
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uint32_t uec_edi;
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uint32_t uec_esi;
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uint32_t uec_ebp;
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uint32_t uec_temp;
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uint32_t uec_ebx;
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uint32_t uec_edx;
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uint32_t uec_ecx;
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uint32_t uec_eax;
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uint32_t uec_inum;
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uint32_t uec_ecode;
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uint32_t uec_eip;
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uint32_t uec_cs;
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uint32_t uec_eflags;
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uint32_t uec_esp;
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uint32_t uec_ss;
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uint32_t uec_fs;
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uint32_t uec_gs;
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} usr_econtext_t;
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2018-05-10 19:01:39 +02:00
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#if defined(LYNXOS_178)
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/* Floating point register context */
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typedef struct usr_fcontext {
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uint32_t ufc_control;
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uint32_t ufc_status;
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uint32_t ufc_tag;
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uint8_t *ufc_inst_off;
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uint32_t ufc_inst_sel;
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uint8_t *ufc_data_off;
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uint32_t ufc_data_sel;
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struct ufp387_real {
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uint16_t umant4;
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uint16_t umant3;
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uint16_t umant2;
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uint16_t umant1;
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uint16_t us_and_e;
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} ufc_reg[8];
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} usr_fcontext_t;
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#else /* This is LynxOS 5.x. */
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2010-09-13 21:11:03 +02:00
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/* Floating point and SIMD register context */
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typedef struct usr_fcontext {
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uint16_t ufc_control;
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uint16_t ufc_status;
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uint16_t ufc_tag;
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uint16_t ufc_opcode;
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uint8_t *ufc_inst_off;
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uint32_t ufc_inst_sel;
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uint8_t *ufc_data_off;
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uint32_t ufc_data_sel;
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uint32_t usse_mxcsr;
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uint32_t usse_mxcsr_mask;
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struct ufp387_real {
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uint16_t umant4;
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uint16_t umant3;
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uint16_t umant2;
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uint16_t umant1;
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uint16_t us_and_e;
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uint16_t ureserved_1;
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uint16_t ureserved_2;
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uint16_t ureserved_3;
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} ufc_reg[8];
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struct uxmm_register {
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uint16_t uchunk_1;
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uint16_t uchunk_2;
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uint16_t uchunk_3;
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uint16_t uchunk_4;
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uint16_t uchunk_5;
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uint16_t uchunk_6;
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uint16_t uchunk_7;
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uint16_t uchunk_8;
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} uxmm_reg[8];
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char ureserved[16][14];
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} usr_fcontext_t;
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2018-05-10 19:01:39 +02:00
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#endif
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2010-09-13 21:11:03 +02:00
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/* The index of various registers inside the regcache. */
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enum lynx_i386_gdb_regnum
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{
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I386_EAX_REGNUM,
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I386_ECX_REGNUM,
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I386_EDX_REGNUM,
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I386_EBX_REGNUM,
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I386_ESP_REGNUM,
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I386_EBP_REGNUM,
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I386_ESI_REGNUM,
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I386_EDI_REGNUM,
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I386_EIP_REGNUM,
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I386_EFLAGS_REGNUM,
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I386_CS_REGNUM,
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I386_SS_REGNUM,
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I386_DS_REGNUM,
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I386_ES_REGNUM,
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I386_FS_REGNUM,
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I386_GS_REGNUM,
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I386_ST0_REGNUM,
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I386_FCTRL_REGNUM = I386_ST0_REGNUM + 8,
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I386_FSTAT_REGNUM,
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I386_FTAG_REGNUM,
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I386_FISEG_REGNUM,
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I386_FIOFF_REGNUM,
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I386_FOSEG_REGNUM,
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I386_FOOFF_REGNUM,
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I386_FOP_REGNUM,
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I386_XMM0_REGNUM = 32,
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I386_MXCSR_REGNUM = I386_XMM0_REGNUM + 8,
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I386_SENTINEL_REGUM
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};
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/* The fill_function for the general-purpose register set. */
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static void
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lynx_i386_fill_gregset (struct regcache *regcache, char *buf)
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{
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#define lynx_i386_collect_gp(regnum, fld) \
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collect_register (regcache, regnum, \
|
|
|
|
buf + offsetof (usr_econtext_t, uec_##fld))
|
|
|
|
|
|
|
|
lynx_i386_collect_gp (I386_EAX_REGNUM, eax);
|
|
|
|
lynx_i386_collect_gp (I386_ECX_REGNUM, ecx);
|
|
|
|
lynx_i386_collect_gp (I386_EDX_REGNUM, edx);
|
|
|
|
lynx_i386_collect_gp (I386_EBX_REGNUM, ebx);
|
|
|
|
lynx_i386_collect_gp (I386_ESP_REGNUM, esp);
|
|
|
|
lynx_i386_collect_gp (I386_EBP_REGNUM, ebp);
|
|
|
|
lynx_i386_collect_gp (I386_ESI_REGNUM, esi);
|
|
|
|
lynx_i386_collect_gp (I386_EDI_REGNUM, edi);
|
|
|
|
lynx_i386_collect_gp (I386_EIP_REGNUM, eip);
|
|
|
|
lynx_i386_collect_gp (I386_EFLAGS_REGNUM, eflags);
|
|
|
|
lynx_i386_collect_gp (I386_CS_REGNUM, cs);
|
|
|
|
lynx_i386_collect_gp (I386_SS_REGNUM, ss);
|
|
|
|
lynx_i386_collect_gp (I386_DS_REGNUM, ds);
|
|
|
|
lynx_i386_collect_gp (I386_ES_REGNUM, es);
|
|
|
|
lynx_i386_collect_gp (I386_FS_REGNUM, fs);
|
|
|
|
lynx_i386_collect_gp (I386_GS_REGNUM, gs);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The store_function for the general-purpose register set. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
lynx_i386_store_gregset (struct regcache *regcache, const char *buf)
|
|
|
|
{
|
|
|
|
#define lynx_i386_supply_gp(regnum, fld) \
|
|
|
|
supply_register (regcache, regnum, \
|
|
|
|
buf + offsetof (usr_econtext_t, uec_##fld))
|
|
|
|
|
|
|
|
lynx_i386_supply_gp (I386_EAX_REGNUM, eax);
|
|
|
|
lynx_i386_supply_gp (I386_ECX_REGNUM, ecx);
|
|
|
|
lynx_i386_supply_gp (I386_EDX_REGNUM, edx);
|
|
|
|
lynx_i386_supply_gp (I386_EBX_REGNUM, ebx);
|
|
|
|
lynx_i386_supply_gp (I386_ESP_REGNUM, esp);
|
|
|
|
lynx_i386_supply_gp (I386_EBP_REGNUM, ebp);
|
|
|
|
lynx_i386_supply_gp (I386_ESI_REGNUM, esi);
|
|
|
|
lynx_i386_supply_gp (I386_EDI_REGNUM, edi);
|
|
|
|
lynx_i386_supply_gp (I386_EIP_REGNUM, eip);
|
|
|
|
lynx_i386_supply_gp (I386_EFLAGS_REGNUM, eflags);
|
|
|
|
lynx_i386_supply_gp (I386_CS_REGNUM, cs);
|
|
|
|
lynx_i386_supply_gp (I386_SS_REGNUM, ss);
|
|
|
|
lynx_i386_supply_gp (I386_DS_REGNUM, ds);
|
|
|
|
lynx_i386_supply_gp (I386_ES_REGNUM, es);
|
|
|
|
lynx_i386_supply_gp (I386_FS_REGNUM, fs);
|
|
|
|
lynx_i386_supply_gp (I386_GS_REGNUM, gs);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Extract the first 16 bits of register REGNUM in the REGCACHE,
|
|
|
|
and store these 2 bytes at DEST.
|
|
|
|
|
|
|
|
This is useful to collect certain 16bit registers which are known
|
|
|
|
by GDBserver as 32bit registers (such as the Control Register
|
|
|
|
for instance). */
|
|
|
|
|
|
|
|
static void
|
|
|
|
collect_16bit_register (struct regcache *regcache, int regnum, char *dest)
|
|
|
|
{
|
|
|
|
gdb_byte word[4];
|
|
|
|
|
|
|
|
collect_register (regcache, regnum, word);
|
|
|
|
memcpy (dest, word, 2);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The fill_function for the floating-point register set. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
lynx_i386_fill_fpregset (struct regcache *regcache, char *buf)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* Collect %st0 .. %st7. */
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
collect_register (regcache, I386_ST0_REGNUM + i,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_reg)
|
|
|
|
+ i * sizeof (struct ufp387_real));
|
|
|
|
|
|
|
|
/* Collect the other FPU registers. */
|
|
|
|
collect_16bit_register (regcache, I386_FCTRL_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_control));
|
|
|
|
collect_16bit_register (regcache, I386_FSTAT_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_status));
|
|
|
|
collect_16bit_register (regcache, I386_FTAG_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_tag));
|
|
|
|
collect_register (regcache, I386_FISEG_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_inst_sel));
|
|
|
|
collect_register (regcache, I386_FIOFF_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_inst_off));
|
|
|
|
collect_register (regcache, I386_FOSEG_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_data_sel));
|
|
|
|
collect_register (regcache, I386_FOOFF_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_data_off));
|
2018-05-10 19:01:39 +02:00
|
|
|
#if !defined(LYNXOS_178)
|
2010-09-13 21:11:03 +02:00
|
|
|
collect_16bit_register (regcache, I386_FOP_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_opcode));
|
|
|
|
|
|
|
|
/* Collect the XMM registers. */
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
collect_register (regcache, I386_XMM0_REGNUM + i,
|
|
|
|
buf + offsetof (usr_fcontext_t, uxmm_reg)
|
|
|
|
+ i * sizeof (struct uxmm_register));
|
|
|
|
collect_register (regcache, I386_MXCSR_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, usse_mxcsr));
|
2018-05-10 19:01:39 +02:00
|
|
|
#endif
|
2010-09-13 21:11:03 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* This is the supply counterpart for collect_16bit_register:
|
|
|
|
It extracts a 2byte value from BUF, and uses that value to
|
|
|
|
set REGNUM's value in the regcache.
|
|
|
|
|
|
|
|
This is useful to supply the value of certain 16bit registers
|
|
|
|
which are known by GDBserver as 32bit registers (such as the Control
|
|
|
|
Register for instance). */
|
|
|
|
|
|
|
|
static void
|
|
|
|
supply_16bit_register (struct regcache *regcache, int regnum, const char *buf)
|
|
|
|
{
|
|
|
|
gdb_byte word[4];
|
|
|
|
|
|
|
|
memcpy (word, buf, 2);
|
|
|
|
memset (word + 2, 0, 2);
|
|
|
|
supply_register (regcache, regnum, word);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The store_function for the floating-point register set. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
lynx_i386_store_fpregset (struct regcache *regcache, const char *buf)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* Store the %st0 .. %st7 registers. */
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
supply_register (regcache, I386_ST0_REGNUM + i,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_reg)
|
|
|
|
+ i * sizeof (struct ufp387_real));
|
|
|
|
|
|
|
|
/* Store the other FPU registers. */
|
|
|
|
supply_16bit_register (regcache, I386_FCTRL_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_control));
|
|
|
|
supply_16bit_register (regcache, I386_FSTAT_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_status));
|
|
|
|
supply_16bit_register (regcache, I386_FTAG_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_tag));
|
|
|
|
supply_register (regcache, I386_FISEG_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_inst_sel));
|
|
|
|
supply_register (regcache, I386_FIOFF_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_inst_off));
|
|
|
|
supply_register (regcache, I386_FOSEG_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_data_sel));
|
|
|
|
supply_register (regcache, I386_FOOFF_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_data_off));
|
2018-05-10 19:01:39 +02:00
|
|
|
#if !defined(LYNXOS_178)
|
2010-09-13 21:11:03 +02:00
|
|
|
supply_16bit_register (regcache, I386_FOP_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, ufc_opcode));
|
|
|
|
|
|
|
|
/* Store the XMM registers. */
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
supply_register (regcache, I386_XMM0_REGNUM + i,
|
|
|
|
buf + offsetof (usr_fcontext_t, uxmm_reg)
|
|
|
|
+ i * sizeof (struct uxmm_register));
|
|
|
|
supply_register (regcache, I386_MXCSR_REGNUM,
|
|
|
|
buf + offsetof (usr_fcontext_t, usse_mxcsr));
|
2018-05-10 19:01:39 +02:00
|
|
|
#endif
|
2010-09-13 21:11:03 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Implements the lynx_target_ops.arch_setup routine. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
lynx_i386_arch_setup (void)
|
|
|
|
{
|
2017-10-02 11:00:30 +02:00
|
|
|
struct target_desc *tdesc
|
2019-03-12 21:39:02 +01:00
|
|
|
= i386_create_target_description (X86_XSTATE_SSE_MASK, false, false);
|
2017-10-02 11:00:30 +02:00
|
|
|
|
gdbserver/Windows: crash during connection establishment phase
On Windows, starting a new process with GDBserver seems to work,
in the sense that the program does get started, and GDBserver
confirms that it is listening for GDB to connect. However, as soon as
GDB establishes the connection with GDBserver, and starts discussing
with it, GDBserver crashes, with a SEGV.
This SEGV occurs in remote-utils.c::prepare_resume_reply...
| regp = current_target_desc ()->expedite_regs;
| [...]
| while (*regp)
... because, in our case, REGP is NULL.
This patches fixes the issues by adding a parameter to init_target_desc,
in order to make sure that we always provide the list of registers when
we initialize a target description.
gdb/ChangeLog:
PR server/23158:
* regformats/regdat.sh: Adjust script, following the addition
of the new expedite_regs parameter to init_target_desc.
gdb/gdbserver/ChangeLog:
PR server/23158:
* tdesc.h (init_target_desc) <expedite_regs>: New parameter.
* tdesc.c (init_target_desc) <expedite_regs>: New parameter.
Use it to set the expedite_regs field in the given tdesc.
* x86-tdesc.h: New file.
* linux-aarch64-tdesc.c (aarch64_linux_read_description):
Adjust following the addition of the new expedite_regs parameter
to init_target_desc.
* linux-tic6x-low.c (tic6x_read_description): Likewise.
* linux-x86-tdesc.c: #include "x86-tdesc.h".
(i386_linux_read_description, amd64_linux_read_description):
Adjust following the addition of the new expedite_regs parameter
to init_target_desc.
* lynx-i386-low.c: #include "x86-tdesc.h".
(lynx_i386_arch_setup): Adjust following the addition of the new
expedite_regs parameter to init_target_desc.
* nto-x86-low.c: #include "x86-tdesc.h".
(nto_x86_arch_setup): Adjust following the addition of the new
expedite_regs parameter to init_target_desc.
* win32-i386-low.c: #include "x86-tdesc.h".
(i386_arch_setup): Adjust following the addition of the new
expedite_regs parameter to init_target_desc.
2018-05-10 17:27:13 +02:00
|
|
|
init_target_desc (tdesc, i386_expedite_regs);
|
2017-10-02 11:00:30 +02:00
|
|
|
|
|
|
|
lynx_tdesc = tdesc;
|
2010-09-13 21:11:03 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Description of all the x86-lynx register sets. */
|
|
|
|
|
|
|
|
struct lynx_regset_info lynx_target_regsets[] = {
|
|
|
|
/* General Purpose Registers. */
|
|
|
|
{PTRACE_GETREGS, PTRACE_SETREGS, sizeof(usr_econtext_t),
|
|
|
|
lynx_i386_fill_gregset, lynx_i386_store_gregset},
|
|
|
|
/* Floating Point Registers. */
|
|
|
|
{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof(usr_fcontext_t),
|
|
|
|
lynx_i386_fill_fpregset, lynx_i386_store_fpregset },
|
|
|
|
/* End of list marker. */
|
|
|
|
{0, 0, -1, NULL, NULL }
|
|
|
|
};
|
|
|
|
|
|
|
|
/* The lynx_target_ops vector for x86-lynx. */
|
|
|
|
|
|
|
|
struct lynx_target_ops the_low_target = {
|
|
|
|
lynx_i386_arch_setup,
|
|
|
|
};
|