Mike Frysinger [Sat, 6 Nov 2021 16:52:00 +0000 (12:52 -0400)]
sim: sh: fix unused-value warnings
These macro expansions are deliberate in not using the computed value
so that they trigger side-effects (possible invalid memory accesses)
but while otherwise being noops. Add a (void) cast so the compiler
knows these are intentional.
Mike Frysinger [Sat, 6 Nov 2021 16:44:56 +0000 (12:44 -0400)]
sim: sh: rework register layout with anonymous unions & structs
Now that we require C11, we can leverage anonymous unions & structs
to fix a long standing issue with the SH register layout. The use
of sregs.i for sh-dsp has generated a lot of compiler warnings about
the access being out of bounds -- it only has 7 elements declared,
but code goes beyond that to reach into the fregs that follow. But
now that we have anonymous unions, we can reduce the nested names
and have sregs cover all of these registers.
GDB Administrator [Sun, 7 Nov 2021 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
Tiezhu Yang [Sat, 6 Nov 2021 09:50:20 +0000 (17:50 +0800)]
sim: mips: use sim_fpu_to{32,64}u to fix build warnings
Since the first argument type is unsigned32 or unsigned64, just use
sim_fpu_to{32,64}u instead of sim_fpu_to{32,64}i to fix the following
build warnings:
CC cp1.o
.../sim/mips/cp1.c: In function 'convert':
.../sim/mips/cp1.c:1425:32: warning: pointer targets in passing argument 1 of 'sim_fpu_to32i' differ in signedness [-Wpointer-sign]
status |= sim_fpu_to32i (&result32, &wop, round);
^~~~~~~~~
In file included from .../sim/mips/sim-main.h:67,
from .../sim/mips/cp1.c:46:
.../sim/mips/../common/sim-fpu.h:270:22: note: expected 'signed32 *' {aka 'int *'} but argument is of type 'unsigned32 *' {aka 'unsigned int *'}
INLINE_SIM_FPU (int) sim_fpu_to32i (signed32 *i, const sim_fpu *f,
^~~~~~~~~~~~~
.../sim/mips/cp1.c:1429:32: warning: pointer targets in passing argument 1 of 'sim_fpu_to64i' differ in signedness [-Wpointer-sign]
status |= sim_fpu_to64i (&result64, &wop, round);
^~~~~~~~~
In file included from .../sim/mips/sim-main.h:67,
from .../sim/mips/cp1.c:46:
.../sim/mips/../common/sim-fpu.h:274:22: note: expected 'signed64 *' {aka 'long int *'} but argument is of type 'unsigned64 *' {aka 'long unsigned int *'}
INLINE_SIM_FPU (int) sim_fpu_to64i (signed64 *i, const sim_fpu *f,
^~~~~~~~~~~~~
.../sim/mips/cp1.c: In function 'convert_ps':
.../sim/mips/cp1.c:1528:34: warning: pointer targets in passing argument 1 of 'sim_fpu_to32i' differ in signedness [-Wpointer-sign]
status_u |= sim_fpu_to32i (&res_u, &wop_u, round);
^~~~~~
In file included from .../sim/mips/sim-main.h:67,
from .../sim/mips/cp1.c:46:
.../sim/mips/../common/sim-fpu.h:270:22: note: expected 'signed32 *' {aka 'int *'} but argument is of type 'unsigned32 *' {aka 'unsigned int *'}
INLINE_SIM_FPU (int) sim_fpu_to32i (signed32 *i, const sim_fpu *f,
^~~~~~~~~~~~~
.../sim/mips/cp1.c:1529:34: warning: pointer targets in passing argument 1 of 'sim_fpu_to32i' differ in signedness [-Wpointer-sign]
status_l |= sim_fpu_to32i (&res_l, &wop_l, round);
^~~~~~
In file included from .../sim/mips/sim-main.h:67,
from .../sim/mips/cp1.c:46:
.../sim/mips/../common/sim-fpu.h:270:22: note: expected 'signed32 *' {aka 'int *'} but argument is of type 'unsigned32 *' {aka 'unsigned int *'}
INLINE_SIM_FPU (int) sim_fpu_to32i (signed32 *i, const sim_fpu *f,
^~~~~~~~~~~~~
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Alan Modra [Sat, 6 Nov 2021 10:18:14 +0000 (20:48 +1030)]
Modernise yyerror
Newer versions of bison emit a prototype for yyerror
void yyerror (const char *);
This clashes with some of our old code that declares yyerror to return
an int. Fix that in most cases by modernizing yyerror. bfin-parse.y
uses the return value all over the place, so for there disable
generation of the prototype as specified by posix.
binutils/
* arparse.y (yyerror): Return void.
* dlltool.c (yyerror): Likewise.
* dlltool.h (yyerror): Likewise.
* sysinfo.y (yyerror): Likewise.
* windmc.h (yyerror): Likewise.
* mclex.c (mc_error): Extract from ..
(yyerror): ..here, both now returning void.
gas/
* config/bfin-parse.y (yyerror): Define.
(yyerror): Make static.
* itbl-parse.y (yyerror): Return void.
ld/
* deffilep.y (def_error): Return void.
Alan Modra [Sat, 6 Nov 2021 08:01:38 +0000 (18:31 +1030)]
ubsan: undefined shift in mach-o.c
This one was logically wrong too. If file_ptr was 64 bits, then -1U
is extended to 0x00000000ffffffff, probably not what was intended
here.
* mach-o.c (FILE_ALIGN): Correct expression.
Fangrui Song [Thu, 4 Nov 2021 08:30:12 +0000 (01:30 -0700)]
readelf: Support RELR in -S and -d and output
readelf -r dumping support is not added in this patch.
include/
* elf/common.h: Add SHT_RELR, DT_RELR{,SZ,ENT}
bfd/
* elf.c (_bfd_elf_print_private_bfd_data): Add DT_RELR{,SZ,ENT}.
binutils/
* readelf.c (get_dynamic_type): Add DT_RELR{,SZ,ENT}.
(get_section_type_name): Add SHT_RELR.
Fangrui Song [Thu, 4 Nov 2021 07:55:21 +0000 (00:55 -0700)]
readelf: Make DT_PREINIT_ARRAYSZ's output style match DT_INIT_ARRAYSZ
The output now looks like:
- 0x0000000000000021 (PREINIT_ARRAYSZ) 0x10
+ 0x0000000000000021 (PREINIT_ARRAYSZ) 16 (bytes)
0x0000000000000019 (INIT_ARRAY) 0xbefc90
0x000000000000001b (INIT_ARRAYSZ) 536 (bytes)
* readelf.c (process_dynamic_section): Handle DT_PREINIT_ARRAYSZ.
Mike Frysinger [Sat, 6 Nov 2021 05:44:06 +0000 (01:44 -0400)]
sim: clarify license text via COPYING file
The project has been using GPL v3 for a while now in the source files,
and the arm & ppc ports have carried a copy of the COPYING file. Lets
move those up to the top sim dir like other projects to make it clear.
Also drop the ppc/COPYING.LIB as it's not really referenced by any
source as everything is GPL v3.
GDB Administrator [Sat, 6 Nov 2021 00:00:19 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Fri, 4 Jun 2021 22:00:33 +0000 (16:00 -0600)]
Introduce make_unique_xstrndup
This adds a new make_unique_xstrndup function, which is the "n"
analogue of make_unique_xstrdup. It also updates a couple existing
places to use this function.
Pedro Alves [Tue, 14 Sep 2021 18:01:37 +0000 (19:01 +0100)]
Avoid /proc/pid/mem races (PR 28065)
PR 28065 (gdb.threads/access-mem-running-thread-exit.exp intermittent
failure) shows that GDB can hit an unexpected scenario -- it can
happen that the kernel manages to open a /proc/PID/task/LWP/mem file,
but then reading from the file returns 0/EOF, even though the process
hasn't exited or execed.
"0" out of read/write is normally what you get when the address space
of the process the file was open for is gone, because the process
execed or exited. So when GDB gets the 0, it returns memory access
failure. In the bad case in question, the process hasn't execed or
exited, so GDB fails a memory access when the access should have
worked.
GDB has code in place to gracefully handle the case of opening the
/proc/PID/task/LWP/mem just while the LWP is exiting -- most often the
open fails with EACCES or ENOENT. When it happens, GDB just tries
opening the file for a different thread of the process. The testcase
is written such that it stresses GDB's logic of closing/reopening the
/proc/PID/task/LWP/mem file, by constantly spawning short lived
threads.
However, there's a window where the kernel manages to find the thread,
but the thread exits just after and clears its address space pointer.
In this case, the kernel creates a file successfully, but the file
ends up with no address space associated, so a subsequent read/write
returns 0/EOF too, just like if the whole process had execed or
exited. This is the case in question that GDB does not handle.
Oleg Nesterov gave this suggestion as workaround for that race:
gdb can open(/proc/pid/mem) and then read (say) /proc/pid/statm.
If statm reports something non-zero, then open() was "successfull".
I think that might work. However, I didn't try it, because I realized
we have another nasty race that that wouldn't fix.
The other race I realized is that because we close/reopen the
/proc/PID/task/LWP/mem file when GDB switches to a different inferior,
then it can happen that GDB reopens /proc/PID/task/LWP/mem just after
a thread execs, and before GDB has seen the corresponding exec event.
I.e., we can open a /proc/PID/task/LWP/mem file accessing the
post-exec address space thinking we're accessing the pre-exec address
space.
A few months back, Simon, Oleg and I discussed a similar race:
[Bug gdb/26754] Race condition when resuming threads and one does an exec
https://sourceware.org/bugzilla/show_bug.cgi?id=26754
The solution back then was to make the kernel fail any ptrace
operation until the exec event is consumed, with this kernel commit:
commit
dbb5afad100a828c97e012c6106566d99f041db6
Author: Oleg Nesterov <oleg@redhat.com>
AuthorDate: Wed May 12 15:33:08 2021 +0200
Commit: Linus Torvalds <torvalds@linux-foundation.org>
CommitDate: Wed May 12 10:45:22 2021 -0700
ptrace: make ptrace() fail if the tracee changed its pid unexpectedly
This however, only applies to ptrace, not to the /proc/pid/mem file
opening case. Also, even if it did apply to the file open case, we
would want to support current kernels until such a fix is more wide
spread anyhow.
So all in all, this commit gives up on the idea of only ever keeping
one /proc/pid/mem file descriptor open. Instead, make GDB open a
/proc/pid/mem per inferior, and keep it open until the inferior exits,
is detached or execs. Make GDB open the file right after the inferior
is created or is attached to or forks, at which point we know the
inferior is stable and stopped and isn't thus going to exec, or have a
thread exit, and so the file open won't fail (unless the whole process
is SIGKILLed from outside GDB, at which point it doesn't matter
whether we open the file).
This way, we avoid both races described above, at the expense of using
more file descriptors (one per inferior).
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28065
Change-Id: Iff943b95126d0f98a7973a07e989e4f020c29419
Andrew Burgess [Fri, 5 Nov 2021 12:14:01 +0000 (12:14 +0000)]
gdb/testsuite: use gdb_get_line_number
Replaces a hard coded line number with a use of gdb_get_line_number.
I suspect that the line number has, over time, come adrift from where
it was supposed to be stopping. When the test was first added, line
770 pointed at the final 'return 0' in function main. Over time, as
things have been added, line 770 now points at some random location in
the middle of main.
So, I've marked the 'return 0' with a comment, and now the test will
always stop there.
I also removed an old comment from 1997 talking about how these tests
will only pass with the HP compiler, followed by an additional comment
from 2000 saying that the tests now pass with GCC.
I get the same results before and after this change.
Alan Modra [Fri, 5 Nov 2021 10:56:16 +0000 (21:26 +1030)]
PR28541, unstable cie offset in the output of readelf
Calculating "0 - pointer" can indeed result in seeming randomness as
the pointer address varies.
PR 28541
* dwarf.c (display_debug_frames): Don't print cie offset when
invalid, print "invalid" instead. Remove now redundant warning.
Alan Modra [Fri, 5 Nov 2021 08:31:13 +0000 (19:01 +1030)]
Missing va_end in aarch64-dis.c
* aarch64-dis.c (extract_fields): Invoke va_end.
Alan Modra [Fri, 5 Nov 2021 03:37:56 +0000 (14:07 +1030)]
PR28530, Hang in objdump on machine with 196GB RAM
Investigating the PR28530 testcase, which has a fuzzed compression
header with an enormous size, I noticed that decompress_contents is
broken when the size doesn't fit in strm.avail_out. It wouldn't be
too hard to support larger sizes (patches welcome!) but for now just
stop decompress_contents from returning rubbish.
PR 28530
* compress.c (decompress_contents): Fail when uncompressed_size
is too big.
(bfd_init_section_decompress_status): Likewise.
Alan Modra [Fri, 5 Nov 2021 00:46:28 +0000 (11:16 +1030)]
asan: alpha-vms: objdump buffer overflows
* vms-alpha.c (evax_bfd_print_desc): Sanity check buffer access.
(evax_bfd_print_valspec, evax_bfd_print_typspec): Likewise.
(evax_bfd_print_dst): Likewise.
GDB Administrator [Fri, 5 Nov 2021 00:00:30 +0000 (00:00 +0000)]
Automatic date update in version.in
Simon Marchi [Thu, 4 Nov 2021 19:31:28 +0000 (15:31 -0400)]
gdb: introduce "set index-cache enabled", deprecate "set index-cache on/off"
The "set index-cache" command is used at the same time as a prefix
command (prefix for "set index-cache directory", for example), and a
boolean setting for turning the index-cache on and off. Even though I
did introduce that, I now don't think it's a good idea to do something
non-standard like this.
First, there's no dedicated CLI command to show whether the index-cache
is enabled, so it has to be custom output in the "show index-cache
handler". Also, it means there's no good way a MI frontend can find out
if the index-cache is enabled. "-gdb-show index-cache" doesn't show it
in the MI output record:
(gdb) interpreter-exec mi "-gdb-show index-cache"
~"\n"
~"The index cache is currently disabled.\n"
^done,showlist={option={name="directory",value="/home/simark/.cache/gdb"}}
Fix this by introducing "set/show index-cache enabled on/off", regular
boolean setting commands. Keep commands "set index-cache on" and "set
index-cache off" as deprecated aliases of "set index-cache enabled",
with respectively the default arguments "on" and "off".
Update tests using "set index-cache on/off" to use the new command.
Update the regexps in gdb.base/maint.exp to figure out whether the
index-cache is enabled or not. Update the doc to mention the new
commands.
Change-Id: I7d5aaaf7fd22bf47bd03e0023ef4fbb4023b37b3
Simon Marchi [Sun, 31 Oct 2021 16:02:03 +0000 (12:02 -0400)]
gdb: pass/return setting setter/getter scalar values by value
The getter and setter in struct setting always receive and return values
by const reference. This is not necessary for scalar values (like bool
and int), but more importantly it makes it a bit annoying to write a
getter, you have to use a scratch static variable or something similar
that you can refer to:
const bool &
my_getter ()
{
static bool value;
value = function_returning_bool ();
return value;
}
Change the getter and setter function signatures to receive and return
value by value instead of by reference, when the underlying data type is
scalar. This means that string-based settings will still use
references, but all others will be by value. The getter above would
then be re-written as:
bool
my_getter ()
{
return function_returning_bool ();
}
This is useful for a patch later in this series that defines a boolean
setting with a getter and a setter.
Change-Id: Ieca3a2419fcdb75a6f75948b2c920b548a0af0fd
Simon Marchi [Sun, 31 Oct 2021 14:52:36 +0000 (10:52 -0400)]
gdb: remove command_class enum class_deprecated
The class_deprecated enumerator isn't assigned anywhere, so remove it.
Commands that are deprecated have cmd_list_element::cmd_deprecated set
instead.
Change-Id: Ib35e540915c52aa65f13bfe9b8e4e22e6007903c
Simon Marchi [Sun, 31 Oct 2021 14:58:47 +0000 (10:58 -0400)]
gdb: remove unnecessary cmd_list_element::aliases nullptr checks
Remove two unnecessary nullptr checks. If aliases is nullptr, then the
for loops will simply be skipped.
Change-Id: I9132063bb17798391f8d019af305383fa8e0229f
Simon Marchi [Thu, 4 Nov 2021 18:13:30 +0000 (14:13 -0400)]
gdbserver: re-generate configure
I get some diffs when running autoconf in gdbserver, probably leftovers
from commit
5dfe4bfcb969 ("Fix format_pieces selftest on Windows").
Re-generate configure in that directory.
Change-Id: Icdc9906af95fbaf1047a579914b2983f8ec5db08
H.J. Lu [Thu, 4 Nov 2021 15:07:09 +0000 (08:07 -0700)]
Revert "bfd: Always check sections with the corrupt size"
This reverts commit
e0f7ea91436dd308a094c4c101fd4169e8245a91.
H.J. Lu [Thu, 4 Nov 2021 13:27:16 +0000 (06:27 -0700)]
bfd: Always check sections with the corrupt size
Always check sections with the corrupt size for non-MMO files. Skip MMO
files for compress_status == COMPRESS_SECTION_NONE since MMO has special
handling for COMPRESS_SECTION_NONE.
PR binutils/28530
* compress.c (bfd_get_full_section_contents): Always check
sections with the corrupt size.
Nelson Chu [Thu, 4 Nov 2021 06:31:48 +0000 (14:31 +0800)]
RISC-V: Clarify the behavior of .option rvc or norvc.
Add/Remove the rvc extension to/from the riscv_subsets once the
.option rvc/norvc is set. So that we don't need to always check
the riscv_opts.rvc in the riscv_subset_supports, just call the
riscv_lookup_subset to search the subset list is enough.
Besides, we will need to dump the instructions according to the
elf architecture attributes. That means the dis-assembler needs
to parse the architecture string from the elf attribute before
dumping any instructions, and also needs to recognized the
INSN_CLASS* classes from riscv_opcodes. Therefore, I suppose
some functions will need to be moved from gas/config/tc-riscv.c
to bfd/elfxx-riscv.c, including riscv_multi_subset_supports and
riscv_subset_supports. This is one of the reasons why we need
this patch.
This patch passes the gcc/binutils regressions of rv32emc-elf,
rv32i-elf, rv64gc-elf and rv64gc-linux toolchains.
bfd/
* elfxx-riscv.c (riscv_remove_subset): Remove the extension
from the subset list.
(riscv_update_subset): Add/Remove an extension to/from the
subset list. This is used for the .option rvc or norvc.
* elfxx-riscv.h: Added the extern bool riscv_update_subset.
gas/
* config/tc-riscv.c (riscv_set_options): Removed the unused
rve flag.
(riscv_opts): Likewise.
(riscv_set_rve): Removed.
(riscv_subset_supports): Removed the riscv_opts.rvc check.
(riscv_set_arch): Don't need to call riscv_set_rve.
(reg_lookup_internal): Call riscv_subset_supports to check
whether the rve is supported.
(s_riscv_option): Add/Remove the rvc extension to/from the
subset list once the .option rvc/norvc is set.
Mike Frysinger [Thu, 4 Nov 2021 03:44:19 +0000 (23:44 -0400)]
sim: mips: fix missing prototype in multi-run generation
The multi-run logic for mips involves a bit of codegen and rewriting
of files to include per-architecture prefixes. That can result in
files with missing prototypes which cause compiler errors. In the
case of mips-sde-elf targets, we have:
$srcdir/m16run.c -> $builddir/m16mips64r2_run.c
sim_engine_run -> m16mips64r2_engine_run
$srcdir/micromipsrun.c -> micromipsmicromips_run.c
sim_engine_run -> micromips64micromips_engine_run
micromipsmicromips_run.c:80:1: error: no previous prototype for 'micromips64micromips_engine_run' [-Werror=missing-prototypes]
80 | micromips64micromips_engine_run (SIM_DESC sd, int next_cpu_nr, int nr_cpus,
We generate headers for those prototypes in the configure script,
but only include them in the generated multi-run.c file. Update the
rewrite logic to turn the sim-engine.h include into the relevant
generated engine include so these files also have their prototypes.
$srcdir/m16run.c -> $builddir/m16mips64r2_run.c
sim-engine.h -> m16mips64r2_engine.h
$srcdir/micromipsrun.c -> micromipsmicromips_run.c
sim-engine.h -> micromips64micromips_engine.h
Alan Modra [Thu, 4 Nov 2021 03:41:02 +0000 (14:11 +1030)]
PR28540, segmentation fault on NULL byte_get
PR 28540
* objdump.c (dump_bfd): Don't attempt load_separate_debug_files
when byte_get is NULL.
GDB Administrator [Thu, 4 Nov 2021 00:00:14 +0000 (00:00 +0000)]
Automatic date update in version.in
Mike Frysinger [Wed, 3 Nov 2021 07:13:02 +0000 (03:13 -0400)]
sim: ppc: inline common sim-fpu.c logic
We will never bother building w/out a ../common/ sim directory,
so drop ancient logic supporting that method.
Mike Frysinger [Wed, 3 Nov 2021 07:08:53 +0000 (03:08 -0400)]
sim: ppc: switch to common builds for callback objects
We don't need to build this anymore ourselves since the common build
includes it and produces the same object code. We also need to pull
in the split constant modules after the refactoring and pulling them
out of nltvals.def & targ-map.o. This doesn't matter for the sim
directly, but does for gdb and other users of libsim.
We also delete some conditional source tree logic since we already
require this be the "new" combined tree with a ../common/ dir. This
has been the case for decades at this point.
Simon Marchi [Wed, 3 Nov 2021 19:09:19 +0000 (15:09 -0400)]
gdb: fix gnu-nat build
When building gnu-nat.c, we get:
CXX gnu-nat.o
gnu-nat.c: In member function 'virtual void gnu_nat_target::create_inferior(const char*, const string&, char**, int)':
gnu-nat.c:2117:13: error: 'struct inf' has no member named 'target_is_pushed'
2117 | if (!inf->target_is_pushed (this))
| ^~~~~~~~~~~~~~~~
gnu-nat.c:2118:10: error: 'struct inf' has no member named 'push_target'
2118 | inf->push_target (this);
| ^~~~~~~~~~~
This is because of a confusion between the generic `struct inferior`
variable and the gnu-nat-specific `struct inf` variable. Fix by
referring to `inferior`, not `inf`.
Adjust the comment on top of `struct inf` to clarify the purpose of that
type.
Co-Authored-By: Andrea Monaco <andrea.monaco@autistici.org>
Change-Id: I2fe2f7f6ef61a38d79860fd262b08835c963fc77
Simon Marchi [Wed, 3 Nov 2021 14:46:56 +0000 (10:46 -0400)]
gdb/testsuite: set ASAN_OPTIONS=detect_leaks=0 while running tests
We see some additional failures when running the testsuite against a GDB
compiled with ASan, compared to a GDB compiled without ASan. Some of
them are caused by the memory leak report shown by the GDB process when
it exits, and the fact that it makes it exit with a non-zero exit code.
I generally try to remember to set ASAN_OPTIONS=detect_leaks=0 in my
environment when running the tests, but I don't always do it. I think
it would be nice if the testsuite did it. I don't see any use to have
leak detection when running the tests. That is, unless we ever have a
test that ensures GDB doesn't leak memory, which isn't going to happen
any time soon.
Here are some tests I found that were affected by this:
gdb.base/batch-exit-status.exp
gdb.base/many-headers.exp
gdb.base/quit.exp
gdb.base/with-mf.exp
gdb.dwarf2/gdb-add-index.exp
gdb.dwarf2/gdb-add-index-symlink.exp
gdb.dwarf2/imported-unit-runto-main.exp
Change-Id: I784c7df8a13979eb96587f735c1d33ba2cc6e0ca
Tom Tromey [Wed, 3 Nov 2021 13:33:24 +0000 (07:33 -0600)]
Use section name in warnings in display_debug_loc
While looking at an apparently malformed executable with
"readelf --debug-dump=loc", I got this warning:
readelf: ./main: Warning: There is a hole [0x89 - 0x95] in .debug_loc section.
However, the executable only has a .debug_loclists section.
This patch fixes the warning messages in display_debug_loc to use the
name of the section that is being processed.
binutils/ChangeLog
2021-11-03 Tom Tromey <tromey@adacore.com>
* dwarf.c (display_debug_loc): Use section name in warnings.
Luis Machado [Fri, 29 Oct 2021 17:54:36 +0000 (14:54 -0300)]
[AArch64] Make gdbserver register set selection dynamic
The current register set selection mechanism for AArch64 is static, based
on a pre-populated array of register sets.
This means that we might potentially probe register sets that are not
available. This is OK if the kernel errors out during ptrace, but probing the
tag_ctl register, for example, does not result in a ptrace error if the kernel
supports the tagged address ABI but not MTE (PR 28355).
Making the register set selection dynamic, based on feature checks, solves
this and simplifies the code a bit. It allows us to list all of the register
sets only once, and pick and choose based on HWCAP/HWCAP2 or other properties.
I plan to backport this fix to GDB 11 as well.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28355
Jan Kratochvil [Wed, 3 Nov 2021 10:29:18 +0000 (11:29 +0100)]
Fix LD_PRELOAD=/usr/lib64/libasan.so.6 gdb
Currently for a binary compiled normally (without -fsanitize=address) but with
LD_PRELOAD of ASAN one gets:
$ ASAN_OPTIONS=detect_leaks=0:alloc_dealloc_mismatch=1:abort_on_error=1:fast_unwind_on_malloc=0 LD_PRELOAD=/usr/lib64/libasan.so.6 gdb
=================================================================
==
1909567==ERROR: AddressSanitizer: alloc-dealloc-mismatch (malloc vs operator delete []) on 0x602000001570
#0 0x7f1c98e5efa7 in operator delete[](void*) (/usr/lib64/libasan.so.6+0xb0fa7)
...
0x602000001570 is located 0 bytes inside of 2-byte region [0x602000001570,0x602000001572)
allocated by thread T0 here:
#0 0x7f1c98e5cd1f in __interceptor_malloc (/usr/lib64/libasan.so.6+0xaed1f)
#1 0x557ee4a42e81 in operator new(unsigned long) (/usr/libexec/gdb+0x74ce81)
SUMMARY: AddressSanitizer: alloc-dealloc-mismatch (/usr/lib64/libasan.so.6+0xb0fa7) in operator delete[](void*)
==
1909567==HINT: if you don't care about these errors you may set ASAN_OPTIONS=alloc_dealloc_mismatch=0
==
1909567==ABORTING
Despite the code called properly operator new[] and operator delete[].
But GDB's new-op.cc provides its own operator new[] which gets translated into
malloc() (which gets recogized as operatore new(size_t)) but as it does not
translate also operators delete[] Address Sanitizer gets confused.
The question is how many variants of the delete operator need to be provided.
There could be 14 operators new but there are only 4, GDB uses 3 of them.
There could be 16 operators delete but there are only 6, GDB uses 2 of them.
It depends on libraries and compiler which of the operators will get used.
Currently being used:
U operator new[](unsigned long)
U operator new(unsigned long)
U operator new(unsigned long, std::nothrow_t const&)
U operator delete[](void*)
U operator delete(void*, unsigned long)
Tested on x86_64-linux.
Alan Modra [Wed, 3 Nov 2021 05:51:42 +0000 (16:21 +1030)]
asan: dlltool buffer overflow: embedded NUL in string
yyleng gives the pattern length, xstrdup just copies up to the NUL.
So it is quite possible writing at an index of yyleng-2 overflows
the xstrdup allocated string buffer. xmemdup quite handily avoids
this problem, even writing the terminating NUL over the trailing
quote. Use it in ldlex.l too where we'd already had a report of this
problem and fixed it by hand, and to implement xmemdup0 in gas.
binutils/
* deflex.l (single and double quote strings): Use xmemdup.
gas/
* as.h (xmemdup0): Use xmemdup.
ld/
PR 20906
* ldlex.l (double quote string): Use xmemdup.
Mike Frysinger [Wed, 3 Nov 2021 05:17:17 +0000 (01:17 -0400)]
sim: mloop: mark a few conditionally used funcs as unused
These are marked inline, so building w/gcc at higher optimization
levels will automatically discard them. But building with -O0 will
trigger unused function warnings, so fix that.
The common before/after cover functions in the common mloop generator
are not used by all architecture ports. Doesn't seem to be a hard
requirement, so marking them optional (i.e. unused) is fine.
The cris execute function is conditionally used depending on the
fast-build mode settings, so mark it unused too.
Alan Modra [Wed, 3 Nov 2021 04:20:18 +0000 (14:50 +1030)]
asan: assert (addr_ranges) <= (start)
That assert would be more obvious if it were reported as
"addr_ranges <= end_ranges". Fix that by using the obvious variable
in the final loop. Stop the assertion by using a signed comparison:
It's possible for the rounding up of the arange pointer to exceed the
end of the block when the block size is fuzzed.
* dwarf.c (display_debug_aranges): Use "end_ranges" in loop
displaying ranges rather that "start". Simplify rounding up
to 2*address_size boundary. Use signed comparison in loop.
Mike Frysinger [Sun, 31 Oct 2021 07:29:36 +0000 (03:29 -0400)]
sim: hoist cgen mloop rules up to common builds
These rules don't depend on the target compiler settings, so hoist
the build logic up to the common builds for better parallelization.
We have to extend the genmloop.sh logic a bit to allow outputting
to a subdir since it always assumed cwd was the right place.
We leave the cgen maintainer rules in the subdirs for now as they
aren't normally run, and they rely on cgen logic that has not yet
been generalized.
Mike Frysinger [Sun, 31 Oct 2021 06:47:13 +0000 (02:47 -0400)]
sim: hoist mn10300 & v850 igen rules up to common builds
These rules don't depend on the target compiler settings, so hoist
the build logic up to the common builds for better parallelization.
We leave the mips rules in place as they depend on complicated
arch-specific configure logic that needs to be untangled first.
Mike Frysinger [Sun, 31 Oct 2021 06:08:38 +0000 (02:08 -0400)]
sim: hoist gencode & opc2c build rules up to common builds
These rules don't depend on the target compiler settings, so hoist
the build logic up to the common builds for better parallelization.
Mike Frysinger [Sun, 31 Oct 2021 09:11:34 +0000 (05:11 -0400)]
opcodes: d10v: simplify header includes
This file doesn't use anything from bfd (sysdep.h), so drop that
include. This avoids an implicit dependency on the generated
config.h which can be problematic for build-time tools.
Also swap stdio.h for stddef.h. This file isn't doing or using
any I/O structures, but it does need NULL.
Alan Modra [Tue, 2 Nov 2021 08:31:06 +0000 (19:01 +1030)]
PR28523, ld.bfd created undefined symbols on ppc64
This patch removes any fake (linker created) function descriptor
symbol if its code entry symbol isn't dynamic, to ensure bogus dynamic
symbols are not created. The change to func_desc_adjust requires that
it be run only once, which means ppc64_elf_tls_setup can't call it for
just a few selected symbols.
PR 28523
* elf64-ppc.c (func_desc_adjust): If a function entry sym is
not dynamic and has no plt entry, hide any associated fake
function descriptor symbol.
(ppc64_elf_edit): Move func_desc_adjust iteration over syms to..
(ppc64_elf_tls_setup): ..here.
GDB Administrator [Wed, 3 Nov 2021 00:00:18 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Tue, 2 Nov 2021 18:08:49 +0000 (19:08 +0100)]
[gdb/tdep, rs6000] Don't skip system call in skip_prologue
I ran into a case where a breakpoint on _exit never triggered, because it was
set past the end of the _exit prologue, past the end of the exit_group system
call (which does not return).
More concretely, the breakpoint was set at the last insn show here:
...
Dump of assembler code for function _exit:
0x00007ffff7e42ea0 <+0>: 12 00 4c 3c addis r2,r12,18
0x00007ffff7e42ea4 <+4>: 60 43 42 38 addi r2,r2,17248
0x00007ffff7e42ea8 <+8>: 00 00 00 60 nop
0x00007ffff7e42eac <+12>: f8 ff e1 fb std r31,-8(r1)
0x00007ffff7e42eb0 <+16>: 78 1b 7f 7c mr r31,r3
0x00007ffff7e42eb4 <+20>: f0 ff c1 fb std r30,-16(r1)
0x00007ffff7e42eb8 <+24>: ea 00 00 38 li r0,234
0x00007ffff7e42ebc <+28>: a0 8b 22 e9 ld r9,-29792(r2)
0x00007ffff7e42ec0 <+32>: 78 fb e3 7f mr r3,r31
0x00007ffff7e42ec4 <+36>: 14 6a c9 7f add r30,r9,r13
0x00007ffff7e42ec8 <+40>: 02 00 00 44 sc
0x00007ffff7e42ecc <+44>: 26 00 00 7c mfcr r0
0x00007ffff7e42ed0 <+48>: 00 10 09 74 andis. r9,r0,4096
...
Fix this by treating system calls the same as branches in skip_prologue:
by default, don't skip, such that the breakpoint is set at 0x00007ffff7e42eb8
instead.
Tested on ppc64le-linux, on a power 8 machine.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28527
Tom de Vries [Tue, 2 Nov 2021 17:55:32 +0000 (18:55 +0100)]
[gdb/testsuite] Handle SIGILL in two gdb.arch powerpc test-cases
On powerpc64le-linux, with test-case gdb.arch/powerpc-addpcis.exp I run into
SIGILL:
...
(gdb) PASS: gdb.arch/powerpc-addpcis.exp: get hexadecimal valueof "$r3"
stepi^M
^M
Program terminated with signal SIGILL, Illegal instruction.^M
The program no longer exists.^M
(gdb) PASS: gdb.arch/powerpc-addpcis.exp: set r4
...
because it's a power9 insn, and I'm running on a power8 machine.
Fix this by handling the SIGILL. Likewise in gdb.arch/powerpc-lnia.exp.
Tested on powerpc64le-linux.
Andrew Burgess [Tue, 2 Nov 2021 09:17:11 +0000 (09:17 +0000)]
gdb/sim: update my email address
gdb:
* MAINTAINERS (Global Maintainers): Update my address.
(Responsible Maintainers): Likewise.
(Write After Approval): Likewise.
sim:
* MAINTAINERS (Global Maintainers): Update my address.
Tom de Vries [Tue, 2 Nov 2021 08:27:48 +0000 (09:27 +0100)]
[gdb/testsuite] Fix stepi test-cases with unix/-m32/-fPIE/-pie
When running test-case gdb.base/step-indirect-call-thunk.exp with target board
unix/-m32/-fPIE/-pie, I run into:
...
(gdb) stepi^M
0x5655552e 22 { /* inc.1 */^M
(gdb) stepi^M
0x56555530 22 { /* inc.1 */^M
(gdb) stepi^M
0x565555f7 in __x86.get_pc_thunk.ax ()^M
(gdb) FAIL: gdb.base/step-indirect-call-thunk.exp: stepi into return thunk
...
In contrast, with unix/-m32 we have instead:
...
(gdb) stepi^M
0x08048407 22 { /* inc.1 */^M
(gdb) stepi^M
23 return x + 1; /* inc.2 */^M
(gdb) stepi^M
0x0804840c 23 return x + 1; /* inc.2 */^M
(gdb) stepi^M
24 } /* inc.3 */^M
(gdb) stepi^M
0x08048410 24 } /* inc.3 */^M
(gdb) stepi^M
0x0804848f in __x86_return_thunk ()^M
(gdb) PASS: gdb.base/step-indirect-call-thunk.exp: stepi into return thunk
...
The test-case doesn't expect to run into __x86.get_pc_thunk.ax, which is a
PIC helper function for x86_64-linux.
Fix this by insn-stepping through it.
Likewise in a few other test-cases.
Tested on x86_64-linux.
GDB Administrator [Tue, 2 Nov 2021 00:00:17 +0000 (00:00 +0000)]
Automatic date update in version.in
Alan Modra [Sat, 30 Oct 2021 23:37:14 +0000 (10:07 +1030)]
ARM: match armeb output for unwind-pacbti-m test
* testsuite/gas/arm/unwind-pacbti-m.d: Match armeb output.
Bruno Larsen [Wed, 13 Oct 2021 12:43:13 +0000 (09:43 -0300)]
[gdb/doc]: Updated manpages to be consistent with help
Updated manpages to be consistent with help information provided by the
binary. The main changes are:
* Making all long-form options have '--', instead of a single '-';
* added most of the missing options to the manpage;
* removed the information about using '+' instead of '-', since it
doesn't seem to be supported anymore.
This also fixes 2 upstream bugs:
* https://sourceware.org/bugzilla/show_bug.cgi?id=23965; by adding
--args to the manpage
* https://sourceware.org/bugzilla/show_bug.cgi?id=10619; by adding the
double dashes
Alan Modra [Mon, 1 Nov 2021 08:25:19 +0000 (18:55 +1030)]
macho-o archive sanity checks
Anti-fuzzing checks.
* mach-o.c (bfd_mach_o_fat_archive_p): Sanity check entry offset
and size against file size.
Alan Modra [Sun, 31 Oct 2021 13:50:01 +0000 (00:20 +1030)]
objcopy buffer overflow
"tocopy" in this code was an int, which when the size to be copied was
larger than MAXINT could result in tocopy being negative. A negative
value of course is less than BUFSIZE, but when converted to
bfd_size_type is extremely large.
PR 995
* objcopy.c (copy_unknown_object): Correct calculation of "tocopy".
Use better variable types.
Przemyslaw Wirkus [Mon, 1 Nov 2021 10:43:25 +0000 (10:43 +0000)]
arm: add armv9-a architecture to -march
Update also include:
+ New value of Tag_CPU_arch EABI attribute (22) is added.
+ Updated missing Tag_CPU_arch EABI attributes.
+ Updated how we combine archs 'v4t_plus_v6_m' as this mechanism
have to handle new Armv9 as well.
Regression tested on `arm-none-eabi` cross Binutils and no issues.
bfd/
* archures.c: Define bfd_mach_arm_9.
* bfd-in2.h (bfd_mach_arm_9): Define bfd_mach_arm_9.
* cpu-arm.c: Add 'armv9-a' option to -march.
* elf32-arm.c (using_thumb2_bl): Update assert check.
(arch_has_arm_nop): Add TAG_CPU_ARCH_V9.
(bfd_arm_get_mach_from_attributes): Add case for TAG_CPU_ARCH_V9.
Update assert.
(tag_cpu_arch_combine): Updated table.
(v9): New table..
binutils/
* readelf.c (arm_attr_tag_CPU_arch): Update with
elfcpp/
* arm.h: Update TAG_CPU_ARCH_ enums with correct values.
gas/
* NEWS: Update docs.
* config/tc-arm.c (get_aeabi_cpu_arch_from_fset): Return Armv9-a
for -amarch=all.
(aeabi_set_public_attributes): Update assert.
* doc/c-arm.texi: Update docs.
* testsuite/gas/arm/armv9-a_arch.d: New test.
* testsuite/gas/arm/attr-march-all.d: Update test with v9.
include/
* elf/arm.h Update TAG_CPU_ARCH_ defines with correct values.
* opcode/arm.h (ARM_EXT3_V9A): New macro.
(ARM_ARCH_NONE): Updated with arm_feature_set.core size.
(FPU_NONE): Updated.
(ARM_ANY): Updated.
(ARM_ARCH_UNKNOWN): New macro.
(ARM_FEATURE_LOW): Updated.
(ARM_FEATURE_CORE): Updated.
(ARM_FEATURE_CORE_LOW): Updated.
(ARM_FEATURE_CORE_HIGH): Updated.
(ARM_FEATURE_COPROC): Updated.
(ARM_FEATURE): Updated.
(ARM_FEATURE_ALL): New macro.
opcodes/
* arm-dis.c (select_arm_features): Support bfd_mach_arm_9.
Also Update bfd_mach_arm_unknown to use new macro ARM_ARCH_UNKNOWN.
Mike Frysinger [Mon, 1 Nov 2021 04:58:05 +0000 (00:58 -0400)]
sim: iq2000: reduce -Wno-error scope
Clean up the warnings in sim-if, then reduce the -Werror disable to
the files that still aren't clean that now that we require GNU make
and can set variables on a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:56:52 +0000 (00:56 -0400)]
sim: lm32: reduce -Wno-error scope
Clean up some warnings in dv-lm32cpu, and all in sim-if, then reduce
the -Werror disable to the files that still aren't clean that now that
we require GNU make and can set variables on a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:56:35 +0000 (00:56 -0400)]
sim: frv: reduce -Wno-error scope
Only two files in here still generates warnings, so reduce the -Werror
disable to that now that we require GNU make and can set variables on
a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:56:08 +0000 (00:56 -0400)]
sim: m32r: reduce -Wno-error scope
Only two files in here still generates warnings, so reduce the -Werror
disable to that now that we require GNU make and can set variables on
a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:55:27 +0000 (00:55 -0400)]
sim: mips: reduce -Wno-error scope
Fix a few printf warnings in sim-main.c, and then we're left with only
one file in here still generating warnings, so reduce the -Werror
disable to that alone now that we require GNU make and can set variables
on a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:55:02 +0000 (00:55 -0400)]
sim: erc32: reduce -Wno-error scope
Only one file in here still generates warnings, so reduce the -Werror
disable to that alone now that we require GNU make and can set variables
on a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:54:36 +0000 (00:54 -0400)]
sim: cris: reduce -Wno-error scope
Only two files in here still generates warnings, so reduce the -Werror
disable to that now that we require GNU make and can set variables on
a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:53:38 +0000 (00:53 -0400)]
sim: sh: reduce -Wno-error scope
Only one file in here still generates warnings, so reduce the -Werror
disable to that alone now that we require GNU make and can set variables
on a per-object basis.
Mike Frysinger [Mon, 1 Nov 2021 04:52:52 +0000 (00:52 -0400)]
sim: or1k: build with -Werror
The only warnings left in this port are a few maybe-uninitialized,
but we don't abort the build for them, so turn on -Werror everywhere.
Mike Frysinger [Mon, 1 Nov 2021 04:27:49 +0000 (00:27 -0400)]
sim: igen: minor build output alignment fix
The custom echo was off by one space relative to all the others.
Mike Frysinger [Mon, 1 Nov 2021 04:25:13 +0000 (00:25 -0400)]
sim: ppc: fix the printf fix for 32-bit systems
The time delta is a 64-bit value too.
Mike Frysinger [Mon, 1 Nov 2021 04:07:15 +0000 (00:07 -0400)]
sim: m68hc11: clean up pointer casts
The void *data field is used to past arbitrary data between event
handlers, and these are using it to pass an integer. Fix up the
casts to avoid using (long) to cast to/from pointers since there
is no guarantee that's the right size.
Mike Frysinger [Mon, 1 Nov 2021 04:05:15 +0000 (00:05 -0400)]
sim: d10v: clean up pointer casts
Use %p to print pointers instead of trying to cast them to longs.
Mike Frysinger [Mon, 1 Nov 2021 03:55:51 +0000 (23:55 -0400)]
sim: bfin: cast pointers using uintptr_t
We can't assume that sizeof(long) == sizeof(void*), so change all
these casts over to uintptr_t.
Mike Frysinger [Mon, 1 Nov 2021 03:32:26 +0000 (23:32 -0400)]
sim: ppc: clean up printf format handling
Don't blindly cast every possible type to (long). Change to the right
printf format specifier whether it be a 64-bit type or a pointer.
Mike Frysinger [Mon, 1 Nov 2021 03:48:16 +0000 (23:48 -0400)]
sim: ppc: switch core types to stdint.h types
There's no need to define these ourselves anymore, so switch to the
stdint.h types. This will be important when we start using PRI*
defines with printf formats.
Mike Frysinger [Mon, 1 Nov 2021 03:21:36 +0000 (23:21 -0400)]
sim: mn10300: clean up pointer casts
The void *data field is used to past arbitrary data between event
handlers, and these are using it to pass an enum. Fix up the casts
to avoid using (long) to cast to/from pointers since there is no
guarantee that's the right size.
Mike Frysinger [Mon, 1 Nov 2021 02:57:42 +0000 (22:57 -0400)]
sim: events: clean up trace casts
Don't blindly cast every possible type to (long). Change to the right
printf format specifier whether it be a 64-bit type or a pointer.
Mike Frysinger [Mon, 1 Nov 2021 02:35:41 +0000 (22:35 -0400)]
sim: ppc: handle \r in igen inputs [PR sim/28476]
Make sure we consume & ignore \r bytes in inputs in case the file
encodings are from a non-LF systems (e.g. Windows).
Mike Frysinger [Mon, 1 Nov 2021 00:40:01 +0000 (20:40 -0400)]
sim: ppc: constify strings in igen tooling
GDB Administrator [Mon, 1 Nov 2021 00:00:19 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Fri, 29 Oct 2021 23:04:09 +0000 (17:04 -0600)]
Fix latent bug in DWARF test case
On my branch that replaces the DWARF psymtab reader,
dw2-stack-boundary.exp started failing. However, when I look at the
output in gdb.log, it is correct:
file /home/tromey/gdb/build/gdb/testsuite/outputs/gdb.dwarf2/dw2-stack-boundary/dw2-stack-boundary
Reading symbols from /home/tromey/gdb/build/gdb/testsuite/outputs/gdb.dwarf2/dw2-stack-boundary/dw2-stack-boundary...
During symbol reading: location description stack overflow
During symbol reading: location description stack underflow
What happens to cause the failure is that the two branches in
gdb_test_multiple appear in this order:
-re "\r\nDuring symbol reading: location description stack underflow" {
[...]
-re "\r\nDuring symbol reading: location description stack overflow" {
The first one will match the above, without causing the second one to
ever match -- leading to a spurious failure.
Anchoring the regexps seems to fix the problem, and works for the
current gdb as well.
Tom Tromey [Sun, 31 Oct 2021 17:34:06 +0000 (11:34 -0600)]
Fix unittest.exp failure due to 'set debuginfod' addition
The 'set debuginfod' change caused a regression in unittest.exp:
Running selftest help_doc_invariants.
help doc broken invariant: command 'info set debuginfod' help doc first line is not terminated with a '.' character
help doc broken invariant: command 'set debuginfod' help doc first line is not terminated with a '.' character
help doc broken invariant: command 'show debuginfod' help doc first line is not terminated with a '.' character
Self test failed: self-test failed at ../../binutils-gdb/gdb/unittests/command-def-selftests.c:100
This patch fixes the problem. I'm checking it in.
Mike Frysinger [Sun, 31 Oct 2021 09:25:22 +0000 (05:25 -0400)]
sim: ppc: use silent build rules here too
The ppc codebase is unique and doesn't leverage common/, so have to
add silent rules to it specifically.
Mike Frysinger [Sun, 31 Oct 2021 09:05:49 +0000 (05:05 -0400)]
sim: rl78: drop obsolete manual dependency rules
We have GNU make generate these for us automatically now, so there's
no need to manually specify any deps.
Mike Frysinger [Wed, 7 Jul 2021 03:56:13 +0000 (23:56 -0400)]
sim: drop unused targ-vals.h includes
This is used in a few places where it's not needed. Drop the include
to avoid the build-time generated header file as we move to drop it.
Mike Frysinger [Wed, 7 Jul 2021 03:44:38 +0000 (23:44 -0400)]
sim: unify callback.o building
Now that the use of TARGET_xxx defines have been removed, we can move
this to the common logic so we only build it once for multi-targets.
Mike Frysinger [Wed, 7 Jul 2021 03:37:56 +0000 (23:37 -0400)]
sim: nltvals: pull target open flags out into a dedicated source file
Like we just did for pulling out the errno & signal maps, pull out the
open flag map into a dedicated common file. All newlib ports are using
the same map which makes it easy.
Mike Frysinger [Wed, 7 Jul 2021 03:21:20 +0000 (23:21 -0400)]
sim: nltvals: localize TARGET_<open> defines
Code should not be using these directly, instead they should be
resolving these dynamically via the open_map. Rework the common
callback code that was using the defines to use symbolic names
instead, and localize some of the defines in the ARM code (since
it's a bit unclear how many different APIs it supports currently),
then remove the defines out of the header so no new code can rely on
them.
Mike Frysinger [Wed, 7 Jul 2021 02:43:10 +0000 (22:43 -0400)]
sim: nltvals: pull target signal out into a dedicated source file
Like we just did for pulling out the errno map, pull out the signal
map into a dedicated common file. All newlib ports are using the
same signal map which makes it easy.
Mike Frysinger [Wed, 7 Jul 2021 02:10:53 +0000 (22:10 -0400)]
sim: nltvals: pull target errno out into a dedicated source file
The current system maintains a list of target errno constants in the
nltvals.def file, then runs a build-time tool to turn that into a C
file. This list of errno values is the same for all arches, so we
don't need the arch-specific flexibility. Further, these are only
for newlib/libgloss environments, which makes it confusing to support
other userland runtimes (like Linux). Let's simplify to make this
easier to understand & build. We don't namespace the variables yet,
but sets up the framework for it.
Create a new target-newlib-errno.c template file. The template file
is hand written, but the inline map is still automatically generated.
This allows us to move it to the common set of objects so it's only
built once in a multi-target build.
Now we can remove the output from the gentmap build-time tool since
it's checked into the tree.
Then we stop including the errno lists in nltvals.def since nothing
uses it.
Mike Frysinger [Sun, 31 Oct 2021 08:19:41 +0000 (04:19 -0400)]
sim: erc32: use silent build rules with sis linkage
Mike Frysinger [Sun, 31 Oct 2021 08:17:28 +0000 (04:17 -0400)]
sim: erc32: fix a few more build warnings
Tweak the if indentation & brace style to avoid ambiguous warnings.
Add ATTRIBUTE_UNUSED to UART functions that aren't used when FAST_UART
is defined (which is the default).
Orgad Shaneh [Fri, 29 Oct 2021 06:42:15 +0000 (06:42 +0000)]
sim: erc32: fix signedness compatibility and redefinition warnings
Mike Frysinger [Sun, 31 Oct 2021 06:03:16 +0000 (02:03 -0400)]
sim: add arch-specific conditional logic
This will make it easy to include arch-specific logic (build files)
as we migrate ports to the common top level build.
Mike Frysinger [Sun, 31 Oct 2021 05:49:17 +0000 (01:49 -0400)]
sim: v850: delete old gencode logic
The v850 port used to have a gencode helper, but it was deleted long
ago. Clean up the settings that no longer make sense w/out it.
Mike Frysinger [Sun, 31 Oct 2021 05:17:10 +0000 (01:17 -0400)]
sim: common: merge multiple clean commands
This provides a minor speedup when cleaning in a multi-target build.
Mike Frysinger [Sun, 31 Oct 2021 05:11:41 +0000 (01:11 -0400)]
sim: m32c: tighten up opc2c build output
Drop the single debugging line that repeats the command line option,
and use the silent build helpers to tighten up output.
Mike Frysinger [Sun, 31 Oct 2021 05:08:05 +0000 (01:08 -0400)]
sim: tighten up build regen rules
Update the makefile & configure related rules to use the silent
build helpers.
Mike Frysinger [Sun, 31 Oct 2021 05:05:27 +0000 (01:05 -0400)]
sim: tighten up gencode output
Update the gencode rules to use the silent build helpers.
Mike Frysinger [Sun, 31 Oct 2021 04:55:50 +0000 (00:55 -0400)]
sim: igen: tighten up build output
Add a new stamp helper for quiet builds, and don't dump the command
line options when it runs. That isn't standard tool behavior, and
doesn't really seem necessary in any way.
Mike Frysinger [Sun, 31 Oct 2021 04:49:39 +0000 (00:49 -0400)]
sim: tighten up stamp rules
Add a new ECHO_STAMP helper and convert existing stamp code over
to it. This is mostly common rules and cgen mloop rules.
Mike Frysinger [Sun, 31 Oct 2021 04:42:35 +0000 (00:42 -0400)]
sim: silence stamp touch rules
We pretty much never care about these stamp touches, so silence them.
Also switch to using $@ when it makes sense.
Mike Frysinger [Sun, 31 Oct 2021 04:28:44 +0000 (00:28 -0400)]
sim: standardize move-if-change rules
Use the srcroot path and make them all silent.
Mike Frysinger [Sun, 31 Oct 2021 04:23:36 +0000 (00:23 -0400)]
sim: mips/v850: remove redundant variable setup
The common/Make-common.in fragment already provides these variables.