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John Baldwin d39b60f2e0 x86: Add an x86_xsave_layout structure to handle variable XSAVE layouts. 
The standard layout of the XSAVE extended state area consists of three
regions.  The first 512 bytes (legacy region) match the layout of the
FXSAVE instruction including floating point registers, MMX registers,
and SSE registers.  The next 64 bytes (XSAVE header) contains a header
with a fixed layout.  The final region (extended region) contains zero
or more optional state components.  Examples of these include the
upper 128 bits of YMM registers for AVX.

These optional state components generally have an
architecturally-fixed size, but they are not assigned architectural
offsets in the extended region.  Instead, processors provide
additional CPUID leafs describing the size and offset of each
component in the "standard" layout for a given CPU.  (There is also a
"compact" format which uses an alternate layout, but existing OS's
currently export the "standard" layout when exporting XSAVE data via
ptrace() and core dumps.)

To date, GDB has assumed the layout used on current Intel processors
for state components in the extended region and hardcoded those
offsets in the tables in i387-tdep.c and i387-fp.cc.  However, this
fails on recent AMD processors which use a different layout.
Specifically, AMD Zen3 and later processors do not leave space for the
MPX register set in between the AVX and AVX512 register sets.

To rectify this, add an x86_xsave_layout structure which contains the
total size of the XSAVE extended state area as well as the offset of
each known optional state component.

Subsequent commits will modify XSAVE parsing in both gdb and gdbserver
to use x86_xsave_layout.

Co-authored-by: Aleksandar Paunovic <aleksandar.paunovic@intel.com>
Approved-By: Simon Marchi <simon.marchi@efficios.com>
2023-08-28 14:18:19 -07:00
..
.dir-locals.el Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
.gitattributes gdb, gdbserver, gdbsupport: add .gitattributes files 2020-03-05 15:59:22 +01:00
acinclude.m4 gdb: don't use -Wmissing-prototypes with g++ 2022-01-13 10:25:45 +00:00
aclocal.m4 gdb: use AC_PROG_CC_STDC instead of AM_PROG_CC_STDC 2020-10-31 08:30:57 -04:00
agent.cc Do not cast away const in agent_run_command 2023-02-14 09:01:18 -07:00
agent.h Do not cast away const in agent_run_command 2023-02-14 09:01:18 -07:00
alt-stack.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
array-view.h [gdb] Fix more typos 2023-06-05 12:53:15 +02:00
ax.def Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
block-signals.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
break-common.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
btrace-common.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
btrace-common.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
buildargv.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
byte-vector.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
ChangeLog-2020-2021 gdb: move remaining ChangeLogs to legacy files 2021-07-26 12:20:33 +01:00
check-defines.el Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
cleanups.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
cleanups.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
common-debug.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
common-debug.h gdbsupport: fix scoped_debug_start_end's move constructor 2023-01-05 15:18:11 -05:00
common-defs.h [gdb] Fix typos 2023-06-03 22:43:57 +02:00
common-exceptions.cc [gdb] Fix typos 2023-06-03 22:43:57 +02:00
common-exceptions.h [gdb/build, c++20] Fix Wdeprecated-enum-enum-conversion 2023-08-17 10:41:34 +02:00
common-gdbthread.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
common-inferior.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
common-inferior.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
common-regcache.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
common-regcache.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
common-types.h Move unrelocated_addr to common-types.h 2023-06-05 09:59:18 -06:00
common-utils.cc gdb: Fix building with latest libc++ 2023-04-29 00:35:11 -07:00
common-utils.h gdb: move displaced_step_dump_bytes into gdbsupport (and rename) 2023-03-29 08:57:10 +01:00
common.m4 Set _WIN32_WINNT in common.m4 configure check 2023-01-11 11:00:42 -07:00
compiler-type.m4 Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
config.in gdbsupport: move libxxhash configure check to gdbsupport 2023-01-05 14:38:51 -05:00
configure Set _WIN32_WINNT in common.m4 configure check 2023-01-11 11:00:42 -07:00
configure.ac Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
create-version.sh Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
def-vector.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
default-init-alloc.h [gdb/build, c++20] Handle deprecated std::allocator::construct 2023-08-17 10:41:34 +02:00
eintr.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
enum-flags.h [gdb] Fix typos 2023-06-03 22:43:57 +02:00
environ.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
environ.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
errors.cc Move implementation of perror_with_name to gdbsupport 2023-02-10 21:04:45 -05:00
errors.h Move implementation of perror_with_name to gdbsupport 2023-02-10 21:04:45 -05:00
event-loop.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
event-loop.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
event-pipe.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
event-pipe.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
fileio.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
fileio.h gdb, gdbserver, gdbsupport: fix whitespace issues 2023-03-09 16:32:00 -05:00
filestuff.cc [gdb] Fix typos 2023-06-03 22:43:57 +02:00
filestuff.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
filtered-iterator.h gdbsupport: make filtered_iterator::operator* return the same thing as underlying iterator 2023-05-25 09:48:37 -04:00
format.cc gdb: add support for %V to printf command 2023-05-30 21:49:21 +01:00
format.h gdb: add support for %V to printf command 2023-05-30 21:49:21 +01:00
forward-scope-exit.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
function-view.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_assert.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_binary_search.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_file.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_locale.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_obstack.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_obstack.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_optional.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_proc_service.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_ref_ptr.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_regex.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_regex.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_select.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_setjmp.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_signals.h [gdb] Fix typos 2023-06-03 22:43:57 +02:00
gdb_splay_tree.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_string_view.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_string_view.tcc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_sys_time.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_tilde_expand.cc gdb, gdbserver, gdbsupport: fix whitespace issues 2023-03-09 16:32:00 -05:00
gdb_tilde_expand.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_unique_ptr.h gdb: add gdb::make_unique function 2023-08-23 09:50:30 +01:00
gdb_unlinker.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_vecs.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_vecs.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_wait.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb_wait.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb-checked-static-cast.h gdbsupport: add support for references to checked_static_cast 2023-05-24 14:53:53 -04:00
gdb-dlfcn.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb-dlfcn.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb-hashtab.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb-hashtab.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb-safe-ctype.h gdb: Fix building with latest libc++ 2023-04-29 00:35:11 -07:00
gdb-sigmask.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
gdb-xfree.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
hash_enum.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
host-defs.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
intrusive_list.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
invoke-result.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
iterator-range.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
job-control.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
job-control.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
Makefile.am Remove struct buffer 2023-02-24 11:53:03 -07:00
Makefile.in regen config 2023-08-12 10:27:57 +09:30
netstuff.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
netstuff.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
new-op.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
next-iterator.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
observable.h gdb, gdbserver, gdbsupport: fix whitespace issues 2023-03-09 16:32:00 -05:00
offset-type.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
packed.h [gdb] Fix typos 2023-06-03 22:43:57 +02:00
parallel-for.h gdb, gdbserver, gdbsupport: fix whitespace issues 2023-03-09 16:32:00 -05:00
pathstuff.cc [gdb] Fix typos 2023-06-03 22:43:57 +02:00
pathstuff.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
poison.h [gdb/build, c++20] Stop using deprecated is_pod 2023-08-17 10:41:34 +02:00
preprocessor.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
print-utils.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
print-utils.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
ptid.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
ptid.h gdbsupport: add type definitions for pid, lwp and tid 2023-02-02 10:02:34 -05:00
ptrace.m4 Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
range-chain.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
README
refcounted-object.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
reference-to-pointer-iterator.h [gdb] Fix typos 2023-06-03 22:43:57 +02:00
rsp-low.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
rsp-low.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
run-time-clock.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
run-time-clock.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
safe-iterator.h gdbsupport: make basic_safe_iterator::operator* return the same thing as underlying iterator 2023-05-25 09:44:52 -04:00
safe-strerror.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
scope-exit.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
scoped_fd.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
scoped_ignore_signal.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
scoped_ignore_sigttou.h [gdb] Fix typos 2023-06-03 22:43:57 +02:00
scoped_mmap.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
scoped_mmap.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
scoped_restore.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
search.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
search.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
selftest.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
selftest.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
selftest.m4 Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
signals-state-save-restore.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
signals-state-save-restore.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
signals.cc [gdb] Fix typos 2023-06-03 22:43:57 +02:00
symbol.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
tdesc.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
tdesc.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
thread-pool.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
thread-pool.h Let user C-c when waiting for DWARF index finalization 2023-02-09 07:21:52 -07:00
traits.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
underlying.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
valid-expr.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
version.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
warning.m4 Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
x86-xstate.h x86: Add an x86_xsave_layout structure to handle variable XSAVE layouts. 2023-08-28 14:18:19 -07:00
xml-utils.cc Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00
xml-utils.h Update copyright year range in header of all files managed by GDB 2023-01-01 17:01:16 +04:00

README 

This is a helper library that is used by gdb and gdbserver.

To send patches, follow the gdb patch submission instructions in
../gdb/CONTRIBUTE.  For maintainers, see ../gdb/MAINTAINERS.