Mike Frysinger [Fri, 11 Nov 2022 18:15:32 +0000 (01:15 +0700)]
sim: switch sim_{read,write} APIs to 64-bit all the time [PR sim/7504]
We've been using SIM_ADDR which has always been 32-bit. This means
the upper 32-bit address range in 64-bit sims is inaccessible. Use
64-bit addresses all the time since we want the APIs to be stable
regardless of the active arch backend (which can be 32 or 64-bit).
The length is also 64-bit because it's completely feasible to have
a program that is larger than 4 GiB in size/image/runtime. Forcing
the caller to manually chunk those accesses up into 4 GiB at a time
doesn't seem useful to anyone.
Mike Frysinger [Fri, 11 Nov 2022 18:13:26 +0000 (01:13 +0700)]
sim: use bfd_vma when reading start addr from bfd info
Since SIM_ADDR is always 32-bit, it might truncate the address with
64-bit ELFs. Since we load that addr from the bfd, use the bfd_vma
type which matches the bfd_get_start_address API.
Alan Modra [Thu, 22 Dec 2022 22:57:14 +0000 (09:27 +1030)]
COFF build-id writes uninitialised data to file
1) The first write in write_build_id wrote rubbish past the struct
external_IMAGE_DEBUG_DIRECTORY, which was later overwritten with
correct data. No user visible problem there, except that tools like
valgrind complain.
2) The size for the pdb name was incorrectly calculated.
* emultempl/pe.em (write_build_id): Write the debug directory,
not the entire section contents.
(setup_build_id): Add size for the base name of pdb_name, not
the full path.
* emultempl/pep.em: Likewise.
* testsuite/ld-pe/pdb2-section-contrib.d: Update.
Mike Frysinger [Fri, 11 Nov 2022 16:37:44 +0000 (23:37 +0700)]
sim: mips: merge mips64vr4300 with existing multi-run build
The existing mips64vr-* multi-run build already handles mips4300
targets, so reuse that for mips64vr43* targets too. This moves
more logic from build-time to runtime so we can have a single
binary that supports many targets.
Indu Bhagat [Thu, 22 Dec 2022 17:57:52 +0000 (09:57 -0800)]
gas: sframe: testsuite: add testcase for .cfi_b_key_frame
This is actually a composite test that checks SFrame unwind information
generation for both the .cfi_negate_ra_state and .cfi_b_key_frame
directives on aarch64.
ChangeLog:
* testsuite/gas/cfi-sframe/cfi-sframe-aarch64-pac-ab-key-1.d:
New test.
* testsuite/gas/cfi-sframe/cfi-sframe-aarch64-pac-ab-key-1.s:
Likewise.
* testsuite/gas/cfi-sframe/cfi-sframe.exp: Run new test.
Indu Bhagat [Thu, 22 Dec 2022 17:57:16 +0000 (09:57 -0800)]
gas: sframe: add support for .cfi_b_key_frame
Gather the information from the DWARF FDE on whether frame's return
addresses are signed using the B key or A key. Reflect the information in
the SFrame counterpart data structure, the SFrame FDE.
ChangeLog:
* gas/gen-sframe.c (get_dw_fde_pauth_b_key_p): New definition.
(sframe_v1_set_func_info): Add new argument for pauth_key.
(sframe_set_func_info): Likewise.
(output_sframe_funcdesc): Likewise.
* gas/gen-sframe.h (struct sframe_version_ops): Add new argument
to the function pointer declaration.
* gas/sframe-opt.c (sframe_convert_frag): Handle pauth_key.
Indu Bhagat [Thu, 22 Dec 2022 17:57:02 +0000 (09:57 -0800)]
sframe.h: add support for .cfi_b_key_frame
ARM 8.3 provides five separate keys that can be used to authenticate
pointers. There are two key for executable (instruction) pointers. The
enum pointer_auth_key in gas/config/tc-aarch64.h currently holds two keys:
enum pointer_auth_key {
AARCH64_PAUTH_KEY_A,
AARCH64_PAUTH_KEY_B
};
Analogous to the above, in SFrame format V1, a bit is reserved in the SFrame
FDE to indicate which key is used for signing the frame's return addresses:
- SFRAME_AARCH64_PAUTH_KEY_A has a value of 0
- SFRAME_AARCH64_PAUTH_KEY_B has a value of 1
Note that the information in this bit will always be used along with the
mangled_ra_p bit, the latter indicates whether the return addresses are
mangled/contain PAC auth bits.
include/ChangeLog:
* sframe.h (SFRAME_AARCH64_PAUTH_KEY_A): New definition.
(SFRAME_AARCH64_PAUTH_KEY_B): Likewise.
(SFRAME_V1_FUNC_INFO): Adjust to accommodate pauth_key.
(SFRAME_V1_FUNC_PAUTH_KEY): New macro.
(SFRAME_V1_FUNC_INFO_UPDATE_PAUTH_KEY): Likewise.
Jan Beulich [Thu, 22 Dec 2022 13:31:11 +0000 (14:31 +0100)]
gas: re-arrange listing output for .irp and alike
It is kind of odd to have the expansions of such constructs ahead of
their definition in listings with macro expansion enabled. Adjust this
by pulling ahead the output of the definition lines, taking care to
avoid producing a listing line for (non-existing) line 0 when the source
is stdin.
Note that with the code movement the conditional operator isn't
necessary anymore - list->line now match up.
Jan Beulich [Thu, 22 Dec 2022 08:36:16 +0000 (09:36 +0100)]
x86: correct/improve TSX controls
TSXLDTRK takes RTM as a prereq. Additionally introduce an umbrella "tsx"
extension option covering both RTM and HLE, paralleling the "abm" one we
already have.
Jan Beulich [Thu, 22 Dec 2022 08:34:50 +0000 (09:34 +0100)]
x86: correct dependencies of a few AVX512 sub-features
Like AVX512-FP16, several other extensions require wider than 16-bit
mask registers. As a result they take AVX512BW as a prereq, not (just)
AVX512F. Which in turn points out wrong expectations in the noavx512-1
testcase.
Jan Beulich [Thu, 22 Dec 2022 08:34:17 +0000 (09:34 +0100)]
x86: rework noavx512-1 testcase
So far the set of ".noavx512*" has been accumulating, which isn't ideal.
In particular this hides issues with dependencies between features.
Switch back to the default ISA before disabling a particular subset.
Furthermore limit redundancy by wrapping the repeated block of insns in
an .irp.
Jan Beulich [Thu, 22 Dec 2022 08:33:26 +0000 (09:33 +0100)]
x86: correct SSE dependencies
SSE itself takes FXSR as a prereq. Like AES, PCLMUL, and SHA both GFNI
and KL take SSE2 as a prereq, for operating on packed integers. And
while correcting KL also record it as a prereq to WIDEKL.
Jan Beulich [Thu, 22 Dec 2022 08:33:01 +0000 (09:33 +0100)]
x86: correct what gets disabled by certain ".arch .no*"
Features with prereqs as well as features with dependents cannot re-use
CPU_*_MASK for the 3rd argument of SUBARCH() - they need to use
CPU_ANY_*_MASK in order to avoid disabling too many (when there are
prereqs) and/or too few (when there are dependents) features.
Generally any CPU_ANY_*_MASK which exist should not remain unused.
Exceptions are
- FISTTP which has no corresponding entry in cpu_arch[],
- IAMCU which is a base architecture and hence uses ARCH(), not
SUBARCH() (only extensions can be disabled, but unlike for Cpu*86 it
would be a little more clumsy to suppress generating of the #define).
Jan Beulich [Thu, 22 Dec 2022 08:32:29 +0000 (09:32 +0100)]
x86: re-work ISA extension dependency handling
Getting both forward and reverse ISA dependencies right / consistent has
been a permanent source of mistakes. Reduce what needs specifying
manually to just the direct forward dependencies. Transitive forward
dependencies as well as reverse ones are now derived and hence cannot go
out of sync anymore (at least in the vast majority of cases; there are a
few special cases to still take care of manually). In the course of this
several CPU_ANY_*_FLAGS disappear, requiring adjustment to the
assembler's cpu_arch[].
Note that to retain the correct reverse dependency of AVX512F wrt
AVX512-VP2INTERSECT, the latter has the previously missing AVX512F
prereq added.
Note further that to avoid adding the following undue prereqs:
* ATHLON, K8, and AMDFAM10 gain CMOV and FXSR,
* IAMCU gains 387,
auxiliary table entries (including a colon-separated modifier) are
introduced in addition to the ones representing from converting the old
table.
To maintain forward-only dependencies between AVX (XOP) and SSE* (SSE4a)
(i.e. "nosse" not disabling AVX), reverse dependency tracking is
artifically suppressed.
As a side effect disabling of SSE or SSE2 will now also disable AES,
PCLMUL, and SHA (respective elements were missing from
CPU_ANY_SSE2_FLAGS).
Mike Frysinger [Fri, 11 Nov 2022 16:27:12 +0000 (23:27 +0700)]
sim: mips: match target on cpu settings
We don't need to enforce larger target settings when the only thing
the sim should care about is the CPU target. So reduce most of the
target matches to only check the CPU.
Mike Frysinger [Fri, 11 Nov 2022 09:15:46 +0000 (16:15 +0700)]
sim: mips: move fpu bitsize defines to top-level configure
This drops support for the --enable-sim-float configure option,
but it's not clear anyone ever actually used that. Eventually
we'll want this to be a runtime option anyways.
Mike Frysinger [Fri, 11 Nov 2022 15:57:05 +0000 (22:57 +0700)]
sim: mips: always resolve active bfd mach dynamically
Don't assume that the default bfd that we configured for is the one
that is always active when running a program. We already have access
to the real runtime value, so use it directly. This simplifies the
code quite a bit, and will make it easier to support multiple mach's
in a single binary.
Mike Frysinger [Sun, 6 Nov 2022 14:40:56 +0000 (21:40 +0700)]
sim: build: hoist lists of hw devices up
We need these in the top-level to generate libsim.a, but also in the
subdirs to generate hw-config.h. Move it to the local.mk, and pass
it down when running recursive make. This avoids duplication, and
makes it available to both. We can simplify this once we move the
various steps up to the top-level too.
Mike Frysinger [Sun, 6 Nov 2022 14:24:24 +0000 (21:24 +0700)]
sim: build: hoist lists of common objects up
In order to create libsim.a in the common dir, we need the list of
objects for each target. To avoid duplicating the list with the
recursive make in each port, pass it down as a variable. This is
a temporary hack until the top-level creates libsim.a for ports.
Alan Modra [Wed, 21 Dec 2022 11:10:12 +0000 (21:40 +1030)]
PR29925, Memory leak in find_abstract_instance
The testcase in the PR had a variable with both DW_AT_decl_file and
DW_AT_specification, where the DW_AT_specification also specified
DW_AT_decl_file. This leads to a memory leak as the file name is
malloced and duplicates are not expected.
I've also changed find_abstract_instance to not use a temp for "name",
because that can result in a change in behaviour from the usual last
of duplicate attributes wins.
PR 29925
* dwarf2.c (find_abstract_instance): Delete "name" variable.
Free *filename_ptr before assigning new file name.
(scan_unit_for_symbols): Similarly free func->file and
var->file before assigning.
Andrew Pinski [Tue, 8 Nov 2022 07:57:18 +0000 (07:57 +0000)]
Use toplevel configure for GMP and MPFR for gdb
This patch uses the toplevel configure parts for GMP/MPFR for
gdb. The only thing is that gdb now requires MPFR for building.
Before it was a recommended but not required library.
Also this allows building of GMP and MPFR with the toplevel
directory just like how it is done for GCC.
We now error out in the toplevel configure of the version
of GMP and MPFR that is wrong.
OK after GDB 13 branches? Build gdb 3 ways:
with GMP and MPFR in the toplevel (static library used at that point for both)
With only MPFR in the toplevel (GMP distro library used and MPFR built from source)
With neither GMP and MPFR in the toplevel (distro libraries used)
Changes from v1:
* Updated gdb/README and gdb/doc/gdb.texinfo.
* Regenerated using unmodified autoconf-2.69
Thanks,
Andrew Pinski
ChangeLog:
* Makefile.def: Add configure-gdb dependencies
on all-gmp and all-mpfr.
* configure.ac: Split out MPC checking from MPFR.
Require GMP and MPFR if the gdb directory exist.
* Makefile.in: Regenerate.
* configure: Regenerate.
gdb/ChangeLog:
PR bug/28500
* configure.ac: Remove AC_LIB_HAVE_LINKFLAGS
for gmp and mpfr.
Use GMPLIBS and GMPINC which is provided by the
toplevel configure.
* Makefile.in (LIBGMP, LIBMPFR): Remove.
(GMPLIBS, GMPINC): Add definition.
(INTERNAL_CFLAGS_BASE): Add GMPINC.
(CLIBS): Exchange LIBMPFR and LIBGMP
for GMPLIBS.
* target-float.c: Make the code conditional on
HAVE_LIBMPFR unconditional.
* top.c: Remove code checking HAVE_LIBMPFR.
* configure: Regenerate.
* config.in: Regenerate.
* README: Update GMP/MPFR section of the config
options.
* doc/gdb.texinfo: Likewise.
Bruno Larsen [Wed, 19 Oct 2022 14:57:44 +0000 (16:57 +0200)]
gdb/c++: validate 'using' directives based on the current line
When asking GDB to print a variable from an imported namespace, we only
want to see variables imported in lines that the inferior has already
gone through, as is being tested last in gdb.cp/nsusing.exp. However
with the proposed change to gdb.cp/nsusing.exp, we get the following
failures:
(gdb) PASS: gdb.cp/nsusing.exp: continue to breakpoint: marker10 stop
print x
$9 = 911
(gdb) FAIL: gdb.cp/nsusing.exp: print x, before using statement
next
15 y += x;
(gdb) PASS: gdb.cp/nsusing.exp: using namespace M
print x
$10 = 911
(gdb) PASS: gdb.cp/nsusing.exp: print x, only using M
Showing that the feature wasn't functioning properly, it just so
happened that gcc ordered the namespaces in a convenient way.
This happens because GDB doesn't take into account the line where the
"using namespace" directive is written. So long as it shows up in the
current scope, we assume it is valid.
To fix this, add a new member to struct using_direct, that stores the
line where the directive was written, and a new function that informs if
the using directive is valid already.
Unfortunately, due to a GCC bug, the failure still shows up. Compilers
that set the declaration line of the using directive correctly (such as
Clang) do not show such a bug, so the test includes an XFAIL for gcc
code.
Finally, because the final test of gdb.cp/nsusing.exp has turned into
multiple that all would need XFAILs for older GCCs (<= 4.3), and that
GCC is very old, if it is detected, the test just exits early.
Jan Beulich [Wed, 21 Dec 2022 08:07:03 +0000 (09:07 +0100)]
x86: rename CheckRegSize to CheckOperandSize
While originally indeed used for register size checking only, the
attribute has been used for memory operand size checking as well already
for quite a while, with more such uses recently having been added.
Jan Beulich [Wed, 21 Dec 2022 08:05:43 +0000 (09:05 +0100)]
gprofng/testsuite: restrict testing to native configurations
The binaries involved in testing gprofng are native ones, and hence a
cross build of binutils won't really test intended functionality. Since
this testing takes quite a bit of time (typically more than running all
of binutils, gas, and ld testsuites together), restrict the testing to
native configurations only.
Alan Modra [Wed, 21 Dec 2022 05:36:55 +0000 (16:06 +1030)]
enable-non-contiguous-regions warnings
The warning about discarded sections in elf_link_input_bfd doesn't
belong there since the code is dealing with symbols. Multiple symbols
in a discarded section will result in multiple identical warnings
about the section. Move the warning to a new function in ldlang.c.
The patch also tidies the warning quoting of section and file names,
consistently using `%pA' and `%pB'. I'm no stickler for one style of
section and file name quoting, but they ought to be consistent within
a warning, eg. see the first one fixed in ldlang.c, and when a warning
is emitted for multiple targets they all ought to use exactly the same
format string to reduce translation work. elf64-ppc.c loses the
build_one_stub errors since we won't get there before hitting the
fatal errors in size_one_stub.
Mike Frysinger [Mon, 31 Oct 2022 17:56:10 +0000 (23:41 +0545)]
sim: fully merge sim_cpu_base into sim_cpu
Now that all ports have migrated to the new framework, drop support
for the old sim_cpu_base layout. There's a lot of noise here, so
it's been split into a dedicated commit.
Mike Frysinger [Fri, 12 Aug 2016 15:43:27 +0000 (23:43 +0800)]
sim: sim_cpu: invert sim_cpu storage
Currently all ports have to declare sim_cpu themselves in their
sim-main.h and then embed the common sim_cpu_base in it. This
dynamic makes it impossible to share common object code among
multiple ports because the core data structure is always different.
Let's invert this relationship: common code declares sim_cpu, and
the port uses the new arch_data field for its per-cpu state.
This is the first in a series of changes: it adds a define to select
between the old & new layouts, then converts all the ports that don't
need custom state over to the new layout. This includes mn10300 that,
while it defines custom fields in its cpu struct, never uses them.
Mike Frysinger [Sat, 10 Dec 2022 11:33:58 +0000 (06:33 -0500)]
sim: move register headers into sim/ namespace [PR sim/29869]
These headers define the register numbers for each port to implement
the sim_fetch_register & sim_store_register interfaces. While gdb
uses these, the APIs are part of the sim, not gdb. Move the headers
out of the gdb/ include namespace and into sim/ instead.
Mike Frysinger [Wed, 9 Nov 2022 19:52:45 +0000 (02:52 +0700)]
sim: ppc: move spreg.[ch] files to the source tree
Simplify the build by moving the generation of these files from
build-time (via dgen.c that we have to compile & execute on the
build system) to maintainer/release mode (via spreg-gen.py that
we only ever execute when the spreg table actually changes). It
speeds up the build process and makes it easier for us to reason
about & review changes to the code generator.
The tool is renamed from "dgen" because it's hardcoded to only
generated spreg files. It isn't a generalized tool for creating
lookup tables.
The discard of symbols should be performed whether the warning for
the discard is enabled or not.
Without this patch, ld would segfault in bfd_section_removed_from_list,
called in the if-statement right after this block, as the argument
isec->output_section can be NULL.
The core device has an attach address method as the root of the tree
which calls out to the sim API. But it doesn't have a corresponding
detach method which means we just crash if anything tries to detach
itself from the core. In practice, the m68hc11 is the only model
that actually tries to detach itself on the fly, so no one noticed
earlier.
With this in place, we can delete the existing detach code from the
m68hc11 model since it defaults to "passthru" callback which will in
turn call the dv-core detach, and they have the same behavior -- call
the sim core API to detach from the address space.
Tom Tromey [Thu, 20 Oct 2022 19:54:56 +0000 (13:54 -0600)]
Remove quick_symbol_functions::relocated
quick_symbol_functions::relocated is only needed for psymtabs, and
there it is only needed for Rust. However, because we've switched the
DWARF reader away from psymtabs, this means there's no longer a need
for this method at all.
Tom Tromey [Wed, 10 Aug 2022 20:42:22 +0000 (14:42 -0600)]
Remove MI version 1
MI version 1 is long since obsolete. Several years ago, I filed
PR mi/23170 for this. I think it's finally time to remove this.
Any users of MI 1 can and should upgrade to a newer version.
Jan Vrany [Mon, 19 Dec 2022 11:24:36 +0000 (11:24 +0000)]
gdb: fix command lookup in execute_command ()
Commit b5661ff2 ("gdb: fix possible use-after-free when
executing commands") used lookup_cmd_exact () to lookup
command again after its execution to avoid possible
use-after-free error.
However this change broke test gdb.base/define.exp which
defines a post-hook for subcommand ("target testsuite").
In this case, lookup_cmd_exact () returned NULL because
there's no command 'testsuite' in top-level commands.
This commit fixes this case by looking up the command again
using the original command line via lookup_cmd ().
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Nick Clifton [Mon, 19 Dec 2022 11:13:46 +0000 (11:13 +0000)]
Fix potential illegal memory accesses when parsing corrupt DWARF data.
PR 29914
* dwarf.c (fetch_indexed_value): Fail if the section is not big
enough to contain a header size field.
(display_debug_addr): Fail if the computed address size is too big
or too small.
Jan Beulich [Mon, 19 Dec 2022 08:36:21 +0000 (09:36 +0100)]
gprofng/testsuite: skip Java test without JDK
There's no point in even trying the Java test when gprofng was built
without Java support, and when the building of the constituents of the
testcase also would fail. On such systems this converts the respective
tests from "unresolved" to "unsupported", making the overall testsuite
run no longer report failure just because of this.
Jan Beulich [Mon, 19 Dec 2022 08:36:00 +0000 (09:36 +0100)]
gprofng/testsuite: eliminate bogus casts
Casting pointers to unsigned int is generally problematic and hence
compilers tend to warn about such. While here they're used only in
fprintf(), it still seems better to omit such casts, even if only to
avoid setting bad precedents.
Jan Beulich [Mon, 19 Dec 2022 08:35:37 +0000 (09:35 +0100)]
gprofng/testsuite: correct line continuation in endcases.c
A backslash used to indicate line continuation (in a macro definition
here) is not supposed to be followed by blanks or other white space; the
end-of-line indicator is to follow immediately.
Jan Beulich [Mon, 19 Dec 2022 08:35:18 +0000 (09:35 +0100)]
gprofng/testsuite: correct names for signal handling tests
The signal handling tests spend most of their time in the signal
handlers, and hence for profile output to match anything in program
output, the respective name fields need to hold the handler function
names. This converts both respective tests from "unresolved" to actually
succeeding.
Jan Beulich [Mon, 19 Dec 2022 08:23:34 +0000 (09:23 +0100)]
gprofng/testsuite: adjust linking of synprog
In order for so_syn.so and so_syx.so to be able to access the main
program's "testtime" variable, that variable needs exposing in the
dynamic symbol table. Since this is a test program only, do it the brute
force way and simply expose all global symbols.