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Author SHA1 Message Date
Joel Brobecker
213516ef31 Update copyright year range in header of all files managed by GDB 
This commit is the result of running the gdb/copyright.py script,
which automated the update of the copyright year range for all
source files managed by the GDB project to be updated to include
year 2023.
 2023-01-01 17:01:16 +04:00
Joel Brobecker
4a94e36819 Automatic Copyright Year update after running gdb/copyright.py 
This commit brings all the changes made by running gdb/copyright.py
as per GDB's Start of New Year Procedure.

For the avoidance of doubt, all changes in this commits were
performed by the script.
 2022-01-01 19:13:23 +04:00
Andrew Burgess
96f842cbdb gdb/riscv: add support for vector registers in target descriptions 
This commit adds support to RISC-V GDB for vector registers in the
incoming target description.

The vector registers should be described in a feature called
"org.gnu.gdb.riscv.vector", and should contain the register v0 to
v31.  There's no restriction on the size or type of these registers,
so the target description can set these up as it requires.

However, if the target feature is present then all of the registers
must be present, and they must all be the same size, these
requirements are, I believe, inline with the RISC-V vector extension.

The DWARF register numbers for the vector registers have been added,
and the code to map between GDB's internal numbering and the DWARF
numbering has been updated.

I have not yet added a feature/riscv/*.xml file for the vector
extension, the consequence of this is that we can't, right now, detect
vector registers on a native target, this patch is all about
supporting vectors on a remote target.

It is worth noting that I don't actually have access to a RISC-V
target with vectors, so the only testing that this patch has had has
been done using 'set tdesc filename ....' to load a target description
to which I have manually added the vector feature.  This has shown
that the vector register feature can be successfully parsed, and that
the registers show up in the expected register groups.

Additionally, the RISC-V vector extension is currently at v0.10, which
is also the v1.0 draft release.  However, this extension is not yet
finalised.  It is possible (but unlikely I think) that the register
set could change between now and the final release of the vector
extension.  If this were to happen then we would potentially end up
changing the requirements for the new org.gnu.gdb.riscv.vector
feature.  I really don't think it is likely that the register set will
change this late in the process, and even if it did, changing the
feature requirements will not be a problem as far as I am
concerned (when the alternative is GDB just continues without this
feature for now).

gdb/ChangeLog:

	* NEWS: Mention new target feature name.
	* arch/riscv.c (riscv_create_target_description): GDB doesn't
	currently create target descriptions containing vector registers.
	* arch/riscv.h (struct riscv_gdbarch_features) <vlen>: New member
	variable.
	<operator==>: Also compare vlen.
	<hash>: Also include vlen.
	* riscv-tdep.c (riscv_feature_name_vector): New static global.
	(struct riscv_vector_feature): New struct.
	(riscv_vector_feature): New static global.
	(riscv_register_reggroup_p): Ensure vector registers are part of
	the 'all' group, and part of the 'vector' group.
	(riscv_dwarf_reg_to_regnum): Handle vector registers.
	(riscv_gdbarch_init): Check vector register feature.
	* riscv-tdep.h: Add vector registers to GDB's internal register
	numbers, and to the DWARF register numbers.

gdb/doc/ChangeLog:

	* gdb.texinfo (RISC-V Features): Mention vector register feature.
 2021-06-21 20:47:13 +01:00
Joel Brobecker
3666a04883 Update copyright year range in all GDB files 
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...

gdb/ChangeLog

        Update copyright year range in copyright header of all GDB files.
 2021-01-01 12:12:21 +04:00
Andrew Burgess
2542804022 gdb/riscv: rewrite target description validation, add rv32e support 
This commit started as adding rv32e support to gdb.  The rv32e
architecture is a cut-down rv32i, it only has 16 x-registers compared
to the usual 32, and an rv32e target should not have any floating
point registers.

In order to add this I needed to adjust the target description
validation checks that are performed from riscv_gdbarch_init, and I
finally got fed up with the current scheme of doing these checks and
rewrote this code.

Unfortunately the rv32e changes are currently mixed in with the
rewrite of the validation scheme.  I could split these apart if anyone
is really interested in seeing these two ideas as separate patches.

The main idea behind this change is that where previously I tried to
have a purely data driven approach, a set of tables one for each
expected feature, and then a single generic function that would
validate a feature given a table, I have created a new class for each
feature.  Each class has its own check member function which allows
the logic for how to check each feature to be different.  I think the
new scheme is much easier to follow.

There are some other changes that I made to the validation code as
part of this commit.

I've relaxed some of the checks related to the floating point CSRs.
Previously the 3 CSRs fflags, frm, and fcsr all had to be present in
either the fpu feature or the csr feature.  This requirement is now
relaxed, if the CSRs are not present then gdb will not reject the
target description.  My thinking here is that there's no gdb
functionality that specifically requires these registers, and so, if a
target offers a description without these registers nothing else in
gdb should stop working.

And as part of the rv32e support targets now only have to provide the
first 16 x-registers and $pc.  The second half of the x-registers (x16
-> x31) are now optional.

gdb/ChangeLog:

	* arch/riscv.c: Include 'rv32e-xregs.c'.
	(riscv_create_target_description): Update to handle rv32e.
	* arch/riscv.h (struct riscv_gdbarch_features) <embedded>: New
	member variable.
	<operator==>: Update to account for new field.
	<hash>: Likewise.
	* features/Makefile (FEATURE_XMLFILES): Add riscv/rv32e-xregs.xml.
	* features/riscv/rv32e-xregs.c: Generated.
	* features/riscv/rv32e-xregs.xml: New file.
	* riscv-tdep.c (riscv_debug_breakpoints): Move from later in the
	file.
	(riscv_debug_infcall): Likewise.
	(riscv_debug_unwinder): Likewise.
	(riscv_debug_gdbarch): Likewise.
	(enum riscv_register_required_status): Delete.
	(struct riscv_register_feature): Add constructor, delete default
	constructor, copy, and assign constructors.
	(struct riscv_register_feature::register_info) <required>: Delete.
	<check>: Update comment and arguments.
	(struct riscv_register_feature) <name>: Change to member function.
	<prefer_first_name>: Delete.
	<tdesc_feature>: New member function.
	<registers>: Rename to...
	<m_registers>: ...this.
	<m_feature_name>: New member variable.
	(riscv_register_feature::register_info::check): Update arguments.
	(riscv_xreg_feature): Rewrite as class, create a single static
	instance of the class.
	(riscv_freg_feature): Likewise.
	(riscv_virtual_feature): Likewise.
	(riscv_csr_feature): Likewise.
	(riscv_create_csr_aliases): Has become a member function inside
	riscv_csr_feature class.
	(riscv_abi_embedded): New function definition.
	(riscv_register_name): Adjust to use new feature objects.
	(struct riscv_call_info) <riscv_call_info>: Check for rv32e abi,
	and adjust available argument registers.
	(riscv_features_from_gdbarch_info): Check for EF_RISCV_RVE flag.
	(riscv_check_tdesc_feature): Delete.
	(riscv_tdesc_unknown_reg): Adjust to use new feature objects.
	(riscv_gdbarch_init): Delete target description checking code, and
	instead call to the new feature objects to perform the checks.
	Reorder handling of no abi information case, allows small code
	simplification.
	(_initialize_riscv_tdep): Remove call, this is now done in the
	riscv_csr_feature constructor.
	* riscv-tdep.h (riscv_abi_embedded): Declare.
 2020-12-02 18:30:42 +00:00
Andrew Burgess
51a948fdf0 gdb: Have allocate_target_description return a unique_ptr 
Update allocate_target_description to return a target_desc_up, a
specialisation of unique_ptr.

This commit does not attempt to make use of the unique_ptr in the
best possible way, in almost all cases we immediately release the
pointer from within the unique_ptr and then continue as before.

There are a few places where it was easy to handle the unique_ptr, and
in these cases I've done that.

Everything under gdb/features/* is auto-regenerated.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* arch/aarch32.c (aarch32_create_target_description): Release
	unique_ptr returned from allocate_target_description.
	* arch/aarch64.c (aarch64_create_target_description): Likewise.
	* arch/amd64.c (amd64_create_target_description): Likewise.
	* arch/arc.c (arc_create_target_description): Likewise.
	* arch/arm.c (arm_create_target_description): Likewise.
	* arch/i386.c (i386_create_target_description): Likewise.
	* arch/riscv.c (riscv_create_target_description): Update return
	type.  Handle allocate_target_description returning a unique_ptr.
	(riscv_lookup_target_description): Update to handle unique_ptr.
	* arch/tic6x.c (tic6x_create_target_description): Release
	unique_ptr returned from allocate_target_description.
	* features/microblaze-with-stack-protect.c: Regenerate.
	* features/microblaze.c: Regenerate.
	* features/mips-dsp-linux.c: Regenerate.
	* features/mips-linux.c: Regenerate.
	* features/mips64-dsp-linux.c: Regenerate.
	* features/mips64-linux.c: Regenerate.
	* features/nds32.c: Regenerate.
	* features/nios2.c: Regenerate.
	* features/or1k.c: Regenerate.
	* features/rs6000/powerpc-32.c: Regenerate.
	* features/rs6000/powerpc-32l.c: Regenerate.
	* features/rs6000/powerpc-403.c: Regenerate.
	* features/rs6000/powerpc-403gc.c: Regenerate.
	* features/rs6000/powerpc-405.c: Regenerate.
	* features/rs6000/powerpc-505.c: Regenerate.
	* features/rs6000/powerpc-601.c: Regenerate.
	* features/rs6000/powerpc-602.c: Regenerate.
	* features/rs6000/powerpc-603.c: Regenerate.
	* features/rs6000/powerpc-604.c: Regenerate.
	* features/rs6000/powerpc-64.c: Regenerate.
	* features/rs6000/powerpc-64l.c: Regenerate.
	* features/rs6000/powerpc-7400.c: Regenerate.
	* features/rs6000/powerpc-750.c: Regenerate.
	* features/rs6000/powerpc-860.c: Regenerate.
	* features/rs6000/powerpc-altivec32.c: Regenerate.
	* features/rs6000/powerpc-altivec32l.c: Regenerate.
	* features/rs6000/powerpc-altivec64.c: Regenerate.
	* features/rs6000/powerpc-altivec64l.c: Regenerate.
	* features/rs6000/powerpc-e500.c: Regenerate.
	* features/rs6000/powerpc-e500l.c: Regenerate.
	* features/rs6000/powerpc-isa205-32l.c: Regenerate.
	* features/rs6000/powerpc-isa205-64l.c: Regenerate.
	* features/rs6000/powerpc-isa205-altivec32l.c: Regenerate.
	* features/rs6000/powerpc-isa205-altivec64l.c: Regenerate.
	* features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.c: Regenerate.
	* features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.c: Regenerate.
	* features/rs6000/powerpc-isa205-vsx32l.c: Regenerate.
	* features/rs6000/powerpc-isa205-vsx64l.c: Regenerate.
	* features/rs6000/powerpc-isa207-htm-vsx32l.c: Regenerate.
	* features/rs6000/powerpc-isa207-htm-vsx64l.c: Regenerate.
	* features/rs6000/powerpc-isa207-vsx32l.c: Regenerate.
	* features/rs6000/powerpc-isa207-vsx64l.c: Regenerate.
	* features/rs6000/powerpc-vsx32.c: Regenerate.
	* features/rs6000/powerpc-vsx32l.c: Regenerate.
	* features/rs6000/powerpc-vsx64.c: Regenerate.
	* features/rs6000/powerpc-vsx64l.c: Regenerate.
	* features/rs6000/rs6000.c: Regenerate.
	* features/rx.c: Regenerate.
	* features/s390-gs-linux64.c: Regenerate.
	* features/s390-linux32.c: Regenerate.
	* features/s390-linux32v1.c: Regenerate.
	* features/s390-linux32v2.c: Regenerate.
	* features/s390-linux64.c: Regenerate.
	* features/s390-linux64v1.c: Regenerate.
	* features/s390-linux64v2.c: Regenerate.
	* features/s390-te-linux64.c: Regenerate.
	* features/s390-tevx-linux64.c: Regenerate.
	* features/s390-vx-linux64.c: Regenerate.
	* features/s390x-gs-linux64.c: Regenerate.
	* features/s390x-linux64.c: Regenerate.
	* features/s390x-linux64v1.c: Regenerate.
	* features/s390x-linux64v2.c: Regenerate.
	* features/s390x-te-linux64.c: Regenerate.
	* features/s390x-tevx-linux64.c: Regenerate.
	* features/s390x-vx-linux64.c: Regenerate.
	* mips-tdep.c (_initialize_mips_tdep): Release unique_ptr returned
	from allocate_target_description.
	* target-descriptions.c (allocate_target_description): Update
	return type.
	(print_c_tdesc::visit_pre): Release unique_ptr returned from
	allocate_target_description.

gdbserver/ChangeLog:

	* linux-low.cc (linux_process_target::handle_extended_wait):
	Release the unique_ptr returned from allocate_target_description.
	* linux-riscv-low.cc (riscv_target::low_arch_setup): Likewise.
	* linux-x86-low.cc (tdesc_amd64_linux_no_xml): Change type.
	(tdesc_i386_linux_no_xml): Change type.
	(x86_linux_read_description): Borrow pointer from unique_ptr
	object.
	(x86_target::get_ipa_tdesc_idx): Likewise.
	(initialize_low_arch): Likewise.
	* tdesc.cc (allocate_target_description): Update return type.

gdbsupport/ChangeLog:

	* tdesc.h (allocate_target_description): Update return type.
 2020-10-08 10:14:14 +01:00
Tom de Vries
38f8aa06d9 [gdb/build] Fix missing implicit constructor call with gcc 4.8 
When building gdb on x86_64-linux with --enable-targets riscv64-suse-linux, I
run into:
...
src/gdb/arch/riscv.c:112:45:   required from here
/usr/include/c++/4.8/bits/hashtable_policy.h:195:39: error: no matching \
  function for call to 'std::pair<const riscv_gdbarch_features, const \
  std::unique_ptr<target_desc, target_desc_deleter> >::pair(const \
  riscv_gdbarch_features&, target_desc*&)'
  : _M_v(std::forward<_Args>(__args)...) { }
                                       ^
...
for this code in riscv_lookup_target_description:
...
  /* Add to the cache.  */
  riscv_tdesc_cache.emplace (features, tdesc);
...

Work around this compiler problem (filed as PR gcc/96537), similar to how that
was done in commit 6d0cf4464e "Fix build with gcc-4.8.x":
...
-  riscv_tdesc_cache.emplace (features, tdesc);
+  riscv_tdesc_cache.emplace (features, target_desc_up (tdesc));
...
That is, call the target_desc_up constructor explictly instead of implicitly.

Also, work around a similar issue in get_thread_arch_aspace_regcache.

Build on x86_64-linux with --enable-targets riscv64-suse-linux, and
reg-tested.

gdb/ChangeLog:

2020-08-08  Tom de Vries  <tdevries@suse.de>

	PR build/26344
	* arch/riscv.c (riscv_lookup_target_description): Use an explicit
	constructor.
	* regcache.c (get_thread_arch_aspace_regcache): Same.
 2020-08-08 23:34:19 +02:00
Andrew Burgess
0e26741636 gdb/riscv: delete target descriptions when gdb exits 
It was pointed out on IRC that the RISC-V target allocates target
descriptions and stores them in a global map, and doesn't delete these
target descriptions when GDB shuts down.

This isn't a particular problem, the total number of target
descriptions we can create is very limited so creating these on demand
and holding them for the entire run on GDB seems reasonable.

However, not deleting these objects on GDB exit means extra warnings
are printed from tools like valgrind, and the address sanitiser,
making it harder to spot real issues.  As it's reasonably easy to have
GDB correctly delete these objects on exit, lets just do that.

I started by noticing that we already have a target_desc_up type, a
wrapper around unique_ptr that calls a function that will correctly
delete target descriptions, so I want to use that, but....

...that type is declared in gdb/target-descriptions.h.  If I try to
include that file in gdb/arch/riscv.c I run into a problem, that file
is compiled into both GDB and GDBServer.

OK, I could guard the include with #ifdef, but surely we can do
better.

So then I decided to move the target_desc_up type into
gdbsupport/tdesc.h, this is the interface file for generic code shared
between GDB and GDBserver (relating to target descriptions).  The
actual implementation for the delete function still lives in
gdb/target-description.c, but now gdb/arch/riscv.c can see the
declaration.  Problem solved....

... but, though RISC-V doesn't use it I've now exposed the
target_desc_up type to gdbserver, so in future someone _might_ start
using it, which is fine, except right now there's no definition of the
delete function - remember the delete I used is only defined in GDB
code.

No problem, I add an implementation of the delete operator into
gdbserver/tdesc.cc, and all is good..... except....

I start getting this error from GCC:

  tdesc.cc:109:10: error: deleting object of polymorphic class type ‘target_desc’ which has non-virtual destructor might cause undefined behavior [-Werror=delete-non-virtual-dtor]

Which is caused because gdbserver's target_desc type inherits from
tdesc_element which has a virtual method, and so GCC worries that
target_desc might be used as a base class.

The solution is to declare gdbserver's target_desc class as final.
This is fine so long as we never intent to inherit from
target_desc (in gdbserver).  But if we did then we'd want to make
target_desc's destructor virtual anyway, so the error above would be
resolved, and there wouldn't be an issue.

gdb/ChangeLog:

	* arch/riscv.c (riscv_tdesc_cache): Change map type.
	(riscv_lookup_target_description): Return pointer out of
	unique_ptr.
	* target-descriptions.c (allocate_target_description): Add
	comment.
	(target_desc_deleter::operator()): Likewise.
	* target-descriptions.h (struct target_desc_deleter): Moved to
	gdbsupport/tdesc.h.
	(target_desc_up): Likewise.

gdbserver/ChangeLog:

	* tdesc.cc (allocate_target_description): Add header comment.
	(target_desc_deleter::operator()): New function.
	* tdesc.h (struct target_desc): Declare as final.

gdbsupport/ChangeLog:

	* tdesc.h (struct target_desc_deleter): Moved here
	from gdb/target-descriptions.h, extend comment.
	(target_desc_up): Likewise.
 2020-07-17 21:15:32 +01:00
Andrew Burgess
d1c9b20ff9 gdb/riscv: Update API for looking up target descriptions 
In preparation for adding the RISC-V gdbserver, this commit
restructures the API for looking up target descriptions.

The current API is riscv_create_target_description, which creates a
target description from a riscv_gdbarch_features, but also caches the
created target descriptions so that for a given features object we
always get back the same target description object.  This is important
for GDB due to the way gdbarch objects are reused.

As the same target description is always returned to GDB, and can be
returned multiple times, it is returned as a const, however, the
current cache actually stores a non-const target description.  This is
improved in this patch so that the cache holds a const target
description.

For gdbsever, this caching of the target descriptions is not needed,
the gdbserver looks up one target description to describe the target
it is actually running on and that is it.  Further the gdbserver
actually needs to modify the target description that is looked up, so
for the gdbsever, returning a const target description is not
acceptable.

This commit aims to address this by creating two parallel target
description APIs, on is the old riscv_create_target_description,
however, this no longer performs any caching, and just creates a new
target description, and returns it as non-const.

The second API is riscv_lookup_target_description, this one performs
the caching, and calls riscv_create_target_description to create a
target description when needed.

In order to make sure the correct API is used in the correct place I
have guarded the code using the GDBSERVER define.  For GDB the
riscv_create_target_description is static, and not generally usable
throughout GDB, only the lookup API is global.  In gdbserver, the
lookup functions, and the cache are not defined or created at all,
only the riscv_create_target_description API is available.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* arch/riscv.c (struct riscv_gdbarch_features_hasher): Only define
	if GDBSERVER is not defined.
	(riscv_tdesc_cache): Likewise, also store const target_desc.
	(STATIC_IN_GDB): Define.
	(riscv_create_target_description): Update declaration with
	STATIC_IN_GDB.
	(riscv_lookup_target_description): New function, only define if
	GDBSERVER is not defined.
	* arch/riscv.h (riscv_create_target_description): Declare only
	when GDBSERVER is defined.
	(riscv_lookup_target_description): New declaration when GDBSERVER
	is not defined.
	* nat/riscv-linux-tdesc.c (riscv_linux_read_description): Rename to...
	(riscv_linux_read_features): ...this, and return
	riscv_gdbarch_features instead of target_desc.
	* nat/riscv-linux-tdesc.h: Include 'arch/riscv.h'.
	(riscv_linux_read_description): Rename to...
	(riscv_linux_read_features): ...this.
	* riscv-linux-nat.c (riscv_linux_nat_target::read_description):
	Update to use riscv_gdbarch_features and
	riscv_lookup_target_description.
	* riscv-tdep.c (riscv_find_default_target_description): Use
	riscv_lookup_target_description instead of
	riscv_create_target_description.
 2020-02-19 01:24:37 +00:00
Joel Brobecker
b811d2c292 Update copyright year range in all GDB files. 
gdb/ChangeLog:

        Update copyright year range in all GDB files.
 2020-01-01 10:20:53 +04:00
Tom Tromey
268a13a5a3 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.
 2019-07-09 07:45:38 -06:00
Tom Tromey
0747795c08 Normalize includes to use common/ 
This changes all includes to use the form "common/filename.h" rather
than just "filename.h".  This was written by a script.

gdb/ChangeLog
2019-01-25  Tom Tromey  <tom@tromey.com>

	* xtensa-linux-nat.c: Fix common/ includes.
	* xml-support.h: Fix common/ includes.
	* xml-support.c: Fix common/ includes.
	* x86-linux-nat.c: Fix common/ includes.
	* windows-nat.c: Fix common/ includes.
	* varobj.h: Fix common/ includes.
	* varobj.c: Fix common/ includes.
	* value.c: Fix common/ includes.
	* valops.c: Fix common/ includes.
	* utils.c: Fix common/ includes.
	* unittests/xml-utils-selftests.c: Fix common/ includes.
	* unittests/utils-selftests.c: Fix common/ includes.
	* unittests/unpack-selftests.c: Fix common/ includes.
	* unittests/tracepoint-selftests.c: Fix common/ includes.
	* unittests/style-selftests.c: Fix common/ includes.
	* unittests/string_view-selftests.c: Fix common/ includes.
	* unittests/scoped_restore-selftests.c: Fix common/ includes.
	* unittests/scoped_mmap-selftests.c: Fix common/ includes.
	* unittests/scoped_fd-selftests.c: Fix common/ includes.
	* unittests/rsp-low-selftests.c: Fix common/ includes.
	* unittests/parse-connection-spec-selftests.c: Fix common/
	includes.
	* unittests/optional-selftests.c: Fix common/ includes.
	* unittests/offset-type-selftests.c: Fix common/ includes.
	* unittests/observable-selftests.c: Fix common/ includes.
	* unittests/mkdir-recursive-selftests.c: Fix common/ includes.
	* unittests/memrange-selftests.c: Fix common/ includes.
	* unittests/memory-map-selftests.c: Fix common/ includes.
	* unittests/lookup_name_info-selftests.c: Fix common/ includes.
	* unittests/function-view-selftests.c: Fix common/ includes.
	* unittests/environ-selftests.c: Fix common/ includes.
	* unittests/copy_bitwise-selftests.c: Fix common/ includes.
	* unittests/common-utils-selftests.c: Fix common/ includes.
	* unittests/cli-utils-selftests.c: Fix common/ includes.
	* unittests/array-view-selftests.c: Fix common/ includes.
	* ui-file.c: Fix common/ includes.
	* tui/tui-io.c: Fix common/ includes.
	* tracepoint.h: Fix common/ includes.
	* tracepoint.c: Fix common/ includes.
	* tracefile-tfile.c: Fix common/ includes.
	* top.h: Fix common/ includes.
	* top.c: Fix common/ includes.
	* thread.c: Fix common/ includes.
	* target/waitstatus.h: Fix common/ includes.
	* target/waitstatus.c: Fix common/ includes.
	* target.h: Fix common/ includes.
	* target.c: Fix common/ includes.
	* target-memory.c: Fix common/ includes.
	* target-descriptions.c: Fix common/ includes.
	* symtab.h: Fix common/ includes.
	* symfile.c: Fix common/ includes.
	* stap-probe.c: Fix common/ includes.
	* spu-linux-nat.c: Fix common/ includes.
	* sparc-nat.c: Fix common/ includes.
	* source.c: Fix common/ includes.
	* solib.c: Fix common/ includes.
	* solib-target.c: Fix common/ includes.
	* ser-unix.c: Fix common/ includes.
	* ser-tcp.c: Fix common/ includes.
	* ser-pipe.c: Fix common/ includes.
	* ser-base.c: Fix common/ includes.
	* selftest-arch.c: Fix common/ includes.
	* s12z-tdep.c: Fix common/ includes.
	* rust-exp.y: Fix common/ includes.
	* rs6000-aix-tdep.c: Fix common/ includes.
	* riscv-tdep.c: Fix common/ includes.
	* remote.c: Fix common/ includes.
	* remote-notif.h: Fix common/ includes.
	* remote-fileio.h: Fix common/ includes.
	* remote-fileio.c: Fix common/ includes.
	* regcache.h: Fix common/ includes.
	* regcache.c: Fix common/ includes.
	* record-btrace.c: Fix common/ includes.
	* python/python.c: Fix common/ includes.
	* python/py-type.c: Fix common/ includes.
	* python/py-inferior.c: Fix common/ includes.
	* progspace.h: Fix common/ includes.
	* producer.c: Fix common/ includes.
	* procfs.c: Fix common/ includes.
	* proc-api.c: Fix common/ includes.
	* printcmd.c: Fix common/ includes.
	* ppc-linux-nat.c: Fix common/ includes.
	* parser-defs.h: Fix common/ includes.
	* osdata.c: Fix common/ includes.
	* obsd-nat.c: Fix common/ includes.
	* nat/x86-linux.c: Fix common/ includes.
	* nat/x86-linux-dregs.c: Fix common/ includes.
	* nat/x86-dregs.h: Fix common/ includes.
	* nat/x86-dregs.c: Fix common/ includes.
	* nat/ppc-linux.c: Fix common/ includes.
	* nat/mips-linux-watch.h: Fix common/ includes.
	* nat/mips-linux-watch.c: Fix common/ includes.
	* nat/linux-waitpid.c: Fix common/ includes.
	* nat/linux-ptrace.h: Fix common/ includes.
	* nat/linux-ptrace.c: Fix common/ includes.
	* nat/linux-procfs.c: Fix common/ includes.
	* nat/linux-personality.c: Fix common/ includes.
	* nat/linux-osdata.c: Fix common/ includes.
	* nat/linux-namespaces.c: Fix common/ includes.
	* nat/linux-btrace.h: Fix common/ includes.
	* nat/linux-btrace.c: Fix common/ includes.
	* nat/fork-inferior.c: Fix common/ includes.
	* nat/amd64-linux-siginfo.c: Fix common/ includes.
	* nat/aarch64-sve-linux-ptrace.c: Fix common/ includes.
	* nat/aarch64-linux.c: Fix common/ includes.
	* nat/aarch64-linux-hw-point.h: Fix common/ includes.
	* nat/aarch64-linux-hw-point.c: Fix common/ includes.
	* namespace.h: Fix common/ includes.
	* mips-linux-tdep.c: Fix common/ includes.
	* minsyms.c: Fix common/ includes.
	* mi/mi-parse.h: Fix common/ includes.
	* mi/mi-main.c: Fix common/ includes.
	* mi/mi-cmd-env.c: Fix common/ includes.
	* memrange.h: Fix common/ includes.
	* memattr.c: Fix common/ includes.
	* maint.h: Fix common/ includes.
	* maint.c: Fix common/ includes.
	* main.c: Fix common/ includes.
	* machoread.c: Fix common/ includes.
	* location.c: Fix common/ includes.
	* linux-thread-db.c: Fix common/ includes.
	* linux-nat.c: Fix common/ includes.
	* linux-fork.c: Fix common/ includes.
	* inline-frame.c: Fix common/ includes.
	* infrun.c: Fix common/ includes.
	* inflow.c: Fix common/ includes.
	* inferior.h: Fix common/ includes.
	* inferior.c: Fix common/ includes.
	* infcmd.c: Fix common/ includes.
	* inf-ptrace.c: Fix common/ includes.
	* inf-child.c: Fix common/ includes.
	* ia64-linux-nat.c: Fix common/ includes.
	* i387-tdep.c: Fix common/ includes.
	* i386-tdep.c: Fix common/ includes.
	* i386-linux-tdep.c: Fix common/ includes.
	* i386-linux-nat.c: Fix common/ includes.
	* i386-go32-tdep.c: Fix common/ includes.
	* i386-fbsd-tdep.c: Fix common/ includes.
	* i386-fbsd-nat.c: Fix common/ includes.
	* guile/scm-type.c: Fix common/ includes.
	* guile/guile.c: Fix common/ includes.
	* go32-nat.c: Fix common/ includes.
	* gnu-nat.c: Fix common/ includes.
	* gdbthread.h: Fix common/ includes.
	* gdbarch-selftests.c: Fix common/ includes.
	* gdb_usleep.c: Fix common/ includes.
	* gdb_select.h: Fix common/ includes.
	* gdb_bfd.c: Fix common/ includes.
	* gcore.c: Fix common/ includes.
	* fork-child.c: Fix common/ includes.
	* findvar.c: Fix common/ includes.
	* fbsd-nat.c: Fix common/ includes.
	* event-top.c: Fix common/ includes.
	* event-loop.c: Fix common/ includes.
	* dwarf2read.c: Fix common/ includes.
	* dwarf2loc.c: Fix common/ includes.
	* dwarf2-frame.c: Fix common/ includes.
	* dwarf-index-cache.c: Fix common/ includes.
	* dtrace-probe.c: Fix common/ includes.
	* disasm-selftests.c: Fix common/ includes.
	* defs.h: Fix common/ includes.
	* csky-tdep.c: Fix common/ includes.
	* cp-valprint.c: Fix common/ includes.
	* cp-support.h: Fix common/ includes.
	* cp-support.c: Fix common/ includes.
	* corelow.c: Fix common/ includes.
	* completer.h: Fix common/ includes.
	* completer.c: Fix common/ includes.
	* compile/compile.c: Fix common/ includes.
	* compile/compile-loc2c.c: Fix common/ includes.
	* compile/compile-cplus-types.c: Fix common/ includes.
	* compile/compile-cplus-symbols.c: Fix common/ includes.
	* command.h: Fix common/ includes.
	* cli/cli-dump.c: Fix common/ includes.
	* cli/cli-cmds.c: Fix common/ includes.
	* charset.c: Fix common/ includes.
	* build-id.c: Fix common/ includes.
	* btrace.h: Fix common/ includes.
	* btrace.c: Fix common/ includes.
	* breakpoint.h: Fix common/ includes.
	* breakpoint.c: Fix common/ includes.
	* ax.h:
	(enum agent_op): Fix common/ includes.
	* ax-general.c (struct aop_map): Fix common/ includes.
	* ax-gdb.c: Fix common/ includes.
	* auxv.c: Fix common/ includes.
	* auto-load.c: Fix common/ includes.
	* arm-tdep.c: Fix common/ includes.
	* arch/riscv.c: Fix common/ includes.
	* arch/ppc-linux-common.c: Fix common/ includes.
	* arch/i386.c: Fix common/ includes.
	* arch/arm.c: Fix common/ includes.
	* arch/arm-linux.c: Fix common/ includes.
	* arch/arm-get-next-pcs.c: Fix common/ includes.
	* arch/amd64.c: Fix common/ includes.
	* arch/aarch64.c: Fix common/ includes.
	* arch/aarch64-insn.c: Fix common/ includes.
	* arch-utils.c: Fix common/ includes.
	* amd64-windows-tdep.c: Fix common/ includes.
	* amd64-tdep.c: Fix common/ includes.
	* amd64-sol2-tdep.c: Fix common/ includes.
	* amd64-obsd-tdep.c: Fix common/ includes.
	* amd64-nbsd-tdep.c: Fix common/ includes.
	* amd64-linux-tdep.c: Fix common/ includes.
	* amd64-linux-nat.c: Fix common/ includes.
	* amd64-fbsd-tdep.c: Fix common/ includes.
	* amd64-fbsd-nat.c: Fix common/ includes.
	* amd64-dicos-tdep.c: Fix common/ includes.
	* amd64-darwin-tdep.c: Fix common/ includes.
	* agent.c: Fix common/ includes.
	* ada-lang.h: Fix common/ includes.
	* ada-lang.c: Fix common/ includes.
	* aarch64-tdep.c: Fix common/ includes.

gdb/gdbserver/ChangeLog
2019-01-25  Tom Tromey  <tom@tromey.com>

	* win32-low.c: Fix common/ includes.
	* win32-i386-low.c: Fix common/ includes.
	* tracepoint.c: Fix common/ includes.
	* thread-db.c: Fix common/ includes.
	* target.h: Fix common/ includes.
	* symbol.c: Fix common/ includes.
	* spu-low.c: Fix common/ includes.
	* server.h: Fix common/ includes.
	* server.c: Fix common/ includes.
	* remote-utils.c: Fix common/ includes.
	* regcache.h: Fix common/ includes.
	* regcache.c: Fix common/ includes.
	* nto-x86-low.c: Fix common/ includes.
	* notif.h: Fix common/ includes.
	* mem-break.h: Fix common/ includes.
	* lynx-low.c: Fix common/ includes.
	* lynx-i386-low.c: Fix common/ includes.
	* linux-x86-tdesc-selftest.c: Fix common/ includes.
	* linux-x86-low.c: Fix common/ includes.
	* linux-low.c: Fix common/ includes.
	* inferiors.h: Fix common/ includes.
	* i387-fp.c: Fix common/ includes.
	* hostio.c: Fix common/ includes.
	* hostio-errno.c: Fix common/ includes.
	* gdbthread.h: Fix common/ includes.
	* gdbreplay.c: Fix common/ includes.
	* fork-child.c: Fix common/ includes.
	* event-loop.c: Fix common/ includes.
	* ax.c:
	(enum gdb_agent_op): Fix common/ includes.
 2019-01-25 15:28:16 -07:00
Joel Brobecker
42a4f53d2b Update copyright year range in all GDB files. 
This commit applies all changes made after running the gdb/copyright.py
script.

Note that one file was flagged by the script, due to an invalid
copyright header
(gdb/unittests/basic_string_view/element_access/char/empty.cc).
As the file was copied from GCC's libstdc++-v3 testsuite, this commit
leaves this file untouched for the time being; a patch to fix the header
was sent to gcc-patches first.

gdb/ChangeLog:

	Update copyright year range in all GDB files.
 2019-01-01 10:01:51 +04:00
Andrew Burgess
634494366c gdb/riscv: Create each unique target description only once 
GDB relies on the fact that if two target descriptions have the same
contents, then they will be the same object instance (having the same
address).  One place where this is a requirement is in
GDBARCH_LIST_LOOKUP_BY_INFO which is used to find previously created
gdbarch objects.

In GDBARCH_LIST_LOOKUP_BY_INFO a pointer comparison is made on the
gdbarch's target description, if the pointers are different then it is
assumed the gdbarches have different, non-compatible target
descriptions.

Previously we would create duplicate target descriptions in the belief
that RISCV_GDBARCH_INIT would spot this duplication and discard the
second instance.  However, this was incorrect, and instead we ended up
creating duplicate gdbarch objects.

With this commit every unique feature set will create one and only one
target description, the feature set and resulting target description
is then cached so that the same target description object can be
returned later.

Many other target avoid this problem by creating a small number of
named target descriptions, and returning one of these.  However, we
currently have 8 possible target descriptions (32 vs 64 bit for x-reg
and f-reg, and h/w or s/w float abi) and creating each of these just
to avoid a dynamic cache seems pointless.

gdb/ChangeLog:

	* arch/riscv.h (riscv_gdbarch_features::hash): New method.
	* arch/riscv.c (struct riscv_gdbarch_features_hasher): New.
	(riscv_tdesc_cache): New global.
	(riscv_create_target_description): Look in the cache before
	creating a new target description.
 2018-11-30 18:13:43 +00:00
Andrew Burgess
0ff80bf7b9 gdb/riscv: Make some target description functions constant 
Makes more of the interface related to fetching target descriptions
constant.

gdb/ChangeLog:

	* arch/riscv.h (riscv_create_target_description): Make return type
	const.
	* arch/riscv.c (riscv_create_target_description): Likewise.
	* riscv-tdep.c (riscv_find_default_target_description): Likewise.
 2018-11-30 18:13:42 +00:00
Andrew Burgess
b5ffee3181 gdb/riscv: Add target description support 
This commit adds target description support for riscv.

I've used the split feature approach for specifying the architectural
features, and the CSR feature is auto-generated from the riscv-opc.h
header file.

If the target doesn't provide a suitable target description then GDB
will build one by looking at the bfd headers.

This commit does not implement target description creation for the
Linux or FreeBSD native targets, both of these will need to add
read_description methods into their respective target classes, which
probe the target features, and then call
riscv_create_target_description to build a suitable target
description.  Until this is done Linux and FreeBSD will get the same
default target description based on the bfd that bare-metal targets
get.

I've only added feature descriptions for 32 and 64 bit registers, 128
bit registers (for RISC-V) are not supported in the reset of GDB yet.

This commit removes the special reading of the MISA register in order
to establish the target features, this was only used for figuring out
the f-register size, and even that wasn't done consistently.  We now
rely on the target to tell us what size of registers it has (or look
in the BFD as a last resort).  The result of this is that we should
now support RV64 targets with 32-bit float, though I have not
extensively tested this combination yet.

	* Makefile.in (ALL_TARGET_OBS): Add arch/riscv.o.
	(HFILES_NO_SRCDIR): Add arch/riscv.h.
	* arch/riscv.c: New file.
	* arch/riscv.h: New file.
	* configure.tgt: Add cpu_obs list of riscv, move riscv-tdep.o into
	this list, and add arch/riscv.o.
	* features/Makefile: Add riscv features.
	* features/riscv/32bit-cpu.c: New file.
	* features/riscv/32bit-cpu.xml: New file.
	* features/riscv/32bit-csr.c: New file.
	* features/riscv/32bit-csr.xml: New file.
	* features/riscv/32bit-fpu.c: New file.
	* features/riscv/32bit-fpu.xml: New file.
	* features/riscv/64bit-cpu.c: New file.
	* features/riscv/64bit-cpu.xml: New file.
	* features/riscv/64bit-csr.c: New file.
	* features/riscv/64bit-csr.xml: New file.
	* features/riscv/64bit-fpu.c: New file.
	* features/riscv/64bit-fpu.xml: New file.
	* features/riscv/rebuild-csr-xml.sh: New file.
	* riscv-tdep.c: Add 'arch/riscv.h' include.
	(riscv_gdb_reg_names): Delete.
	(csr_reggroup): New global.
	(struct riscv_register_alias): Delete.
	(struct riscv_register_feature): New structure.
	(riscv_register_aliases): Delete.
	(riscv_xreg_feature): New global.
	(riscv_freg_feature): New global.
	(riscv_virtual_feature): New global.
	(riscv_csr_feature): New global.
	(riscv_create_csr_aliases): New function.
	(riscv_read_misa_reg): Delete.
	(riscv_has_feature): Delete.
	(riscv_isa_xlen): Simplify, just return cached xlen.
	(riscv_isa_flen): Simplify, just return cached flen.
	(riscv_has_fp_abi): Update for changes in struct gdbarch_tdep.
	(riscv_register_name): Update to make use of tdesc_register_name.
	Look up xreg and freg names in the new globals riscv_xreg_feature
	and riscv_freg_feature.  Don't supply csr aliases here.
	(riscv_fpreg_q_type): Delete.
	(riscv_register_type): Use tdesc_register_type in almost all
	cases, override the returned type in a few specific cases only.
	(riscv_print_one_register_info): Handle errors reading registers.
	(riscv_register_reggroup_p): Use tdesc_register_in_reggroup_p for
	registers that are otherwise unknown to GDB.  Also check the
	csr_reggroup.
	(riscv_print_registers_info): Remove assert about upper register
	number, and use gdbarch_register_reggroup_p instead of
	short-cutting.
	(riscv_find_default_target_description): New function.
	(riscv_check_tdesc_feature): New function.
	(riscv_add_reggroups): New function.
	(riscv_setup_register_aliases): New function.
	(riscv_init_reggroups): New function.
	(_initialize_riscv_tdep): Add calls to setup CSR aliases, and
	setup register groups.  Register new riscv debug variable.
	* riscv-tdep.h: Add 'arch/riscv.h' include.
	(struct gdbarch_tdep): Remove abi union, and add
	riscv_gdbarch_features field.  Remove cached quad floating point
	type, and provide initialisation for double type field.
	* target-descriptions.c (maint_print_c_tdesc_cmd): Add riscv to
	the list of targets using the feature based target descriptions.
	* NEWS: Mention target description support.

gdb/doc/ChangeLog:

	* gdb.texinfo (Standard Target Features): Add RISC-V Features
	sub-section.
 2018-11-21 13:09:50 +00:00