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.
Orgad Shaneh [Thu, 28 Oct 2021 09:07:46 +0000 (09:07 +0000)]
sim: fix compilation on mingw64 [PR sim/28476]
...by reordering includes.
1. sim-utils.c
sim/mips/sim-main.h defines UserMode, while there is a struct in winnt.h
which has UserMode as a member. So if sim-main.h is included before winnt.h,
compilation fails.
2. ppc
registers.h defines CR, which is used as a member in winnt.h.
winsock2.h is included by sys/time.h, so sys/time.h has to be included
before registers.h.
Bug: https://sourceware.org/PR28476
Alan Modra [Sat, 30 Oct 2021 23:38:15 +0000 (10:08 +1030)]
Don't include coff/pe.h in coff-x86_64.c
This (and other) code from coffcode.h is broken for x86_64_coff_vec,
and has been ever since support was added in 2006 commit
99ad839030c1
Here, bfd_coff_aoutsz must match coff_swap_aouthdr_out otherwise we
end up writing garbage.
/* Note that peicode.h fills in a PEAOUTHDR, not an AOUTHDR.
include/coff/pe.h sets AOUTSZ == sizeof (PEAOUTHDR)). */
char * buff;
bfd_size_type amount = bfd_coff_aoutsz (abfd);
buff = (char *) bfd_malloc (amount);
if (buff == NULL)
return false;
coff_swap_aouthdr_out (abfd, & internal_a, buff);
amount = bfd_bwrite (buff, amount, abfd);
We have removed support for --target=x86_64-coff, likely because it
never worked properly, but still produce coff-x86_64.o with
--enable-targets=all. This means objcopy can recognize x86_64 COFF
files but will write garbage to the output file, a fact found by
fuzzers. I suspect x86_64 COFF is still broken after this fix, and
mention of coff-x86_64.* should be removed from bfd/Makefile.am.
* coff-x86_64.c: Don't include coff/pe.h.
(COFF_WITH_pex64): Don't define here.
* pe-x86_64.c: Include coff/pe.h and other headers.
(PEI_HEADERS): Define.
Alan Modra [Sat, 30 Oct 2021 08:49:13 +0000 (19:19 +1030)]
Re: PR28420, ecoff fuzzing failures
sym_ptr_ptr NULL results in segfaults.
PR 28420
* ecoff.c (ecoff_slurp_reloc_table): Don't leave sym_ptr_ptr NULL.
Alan Modra [Sat, 30 Oct 2021 08:24:53 +0000 (18:54 +1030)]
ubsan: alpha-vms: undefined shift
* vms-alpha.c (evax_bfd_print_image): Shift left 1u.
Alan Modra [Sat, 30 Oct 2021 08:12:00 +0000 (18:42 +1030)]
PR28518: signed integer overflow & free on unmalloced address
PR 28518
* vms-alpha.c (build_module_list): Don't lose malloc buffer address.
Use unsigned variables.
GDB Administrator [Sun, 31 Oct 2021 00:00:09 +0000 (00:00 +0000)]
Automatic date update in version.in
Simon Marchi [Sat, 30 Oct 2021 02:15:55 +0000 (22:15 -0400)]
gdb: fix gdb.gdb/unittest.exp with C++17 compiler
On a machine with gcc 11, I get:
FAIL: gdb.gdb/unittest.exp: test_completion: tab complete "maintenance selftest string_v" (second tab) (timeout)
FAIL: gdb.gdb/unittest.exp: test_completion: tab complete "maintenance selftest string_vie" (timeout)
That's because when compiling with C++ >= 17, we use the standard
version of string_view, and don't have a selftest for it. So the list
of selftests shown by the tab completion when completing "string_v"
differs.
Change the test to use the copy_* tests instead.
Change-Id: I85f6aa44ee5fc9652b9bd4451e0506b89773526b
Aaron Merey [Sat, 30 Oct 2021 00:49:29 +0000 (20:49 -0400)]
gdb.texinfo: Expand documentation for debuginfod
Add section describing GDB's usage of debuginfod.
Refer to this new section in the description of the '--with-debuginfod'
configure option.
Mention debuginfod in the 'Separate Debug Files' section.
Aaron Merey [Fri, 29 Oct 2021 23:55:57 +0000 (19:55 -0400)]
gdb: add set/show commands for managing debuginfod
Add 'set debuginfod' command. Accepts 'on', 'off' or 'ask' as an
argument. 'on' enables debuginfod for the current session. 'off'
disables debuginfod for the current session. 'ask' will prompt
the user to either enable or disable debuginfod when the next query
is about to be performed:
This GDB supports auto-downloading debuginfo from the following URLs:
<URL1> <URL2> ...
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod on' to .gdbinit.
For interactive sessions, 'ask' is the default. For non-interactive
sessions, 'off' is the default.
Add 'show debuginfod status' command. Displays whether debuginfod
is set to 'on', 'off' or 'ask'.
Add 'set/show debuginfod urls' commands. Accepts a string of
space-separated debuginfod server URLs to be queried. The default
value is copied from the DEBUGINFOD_URLS environment variable.
Finally add 'set/show debuginfod verbose' commands to control whether
debuginfod-related output is displayed. Verbose output is enabled
by default.
(gdb) run
Starting program: /bin/sleep 5
Download failed: No route to host. Continuing without debug info for /lib64/libc.so.6.
If GDB is not built with debuginfod then these commands will just display
Support for debuginfod is not compiled into GDB.
GDB Administrator [Sat, 30 Oct 2021 00:00:26 +0000 (00:00 +0000)]
Automatic date update in version.in
Simon Marchi [Mon, 27 Sep 2021 01:08:36 +0000 (21:08 -0400)]
gdb: remove TYPE_FIELD_DWARF_BLOCK
Remove TYPE_FIELD_DWARF_BLOCK, replace with type::field +
field::loc_dwarf_block.
Change-Id: I10af9410bb5f46d342b8358a7956998c7e804b64
Simon Marchi [Mon, 27 Sep 2021 01:07:04 +0000 (21:07 -0400)]
gdb: remove TYPE_FIELD_STATIC_PHYSADDR
Remove TYPE_FIELD_STATIC_PHYSADDR replace with type::field +
field::loc_physaddr.
Change-Id: Ica9bc4a48f34750ec82ec86c298d3ecece81bcbd
Simon Marchi [Mon, 27 Sep 2021 01:06:12 +0000 (21:06 -0400)]
gdb: remove TYPE_FIELD_STATIC_PHYSNAME
Remove TYPE_FIELD_STATIC_PHYSNAME, replace with type::field +
field::loc_physname.
Change-Id: Ie35d446b67dd1d02f39998b406001bdb7e6d5abb
Simon Marchi [Sun, 26 Sep 2021 20:38:02 +0000 (16:38 -0400)]
gdb: remove TYPE_FIELD_ENUMVAL
Remove TYPE_FIELD_ENUMVAL, replace with type::field +
field::loc_enumval.
Change-Id: I2ada73e4635aad3363ce2eb22c1dc52698ee2072
Simon Marchi [Sun, 26 Sep 2021 20:36:15 +0000 (16:36 -0400)]
gdb: remove TYPE_FIELD_BITPOS
Remove TYPE_FIELD_BITPOS, replace its uses with type::field +
field::loc_bitpos.
Change-Id: Iccd8d5a77e5352843a837babaa6bd284162e0320
Simon Marchi [Sun, 26 Sep 2021 20:34:28 +0000 (16:34 -0400)]
gdb: remove TYPE_FIELD_LOC_KIND
Remove TYPE_FIELD_LOC_KIND, replace its uses with type::field +
field::loc_kind.
Change-Id: Ib124a26365df82ac1d23df7962d954192913bd90
Simon Marchi [Fri, 24 Sep 2021 03:51:40 +0000 (23:51 -0400)]
gdb: remove FIELD_DWARF_BLOCK macro
Remove FIELD_DWARF_BLOCK, replace its uses with field::loc_dwarf_block.
Change-Id: I66b7d6a960cb5e341e61e21bd3cc9a6ac26de6a8
Simon Marchi [Fri, 24 Sep 2021 03:50:02 +0000 (23:50 -0400)]
gdb: remove FIELD_STATIC_PHYSADDR macro
Remove FIELD_LOC_KIND_PHYSADDR, replace its uses with
field::loc_physaddr.
Change-Id: Ifd8b2bdaad75f42bfb1404ef8c396ffe7e10ac55
Simon Marchi [Fri, 24 Sep 2021 03:47:42 +0000 (23:47 -0400)]
gdb: remove FIELD_STATIC_PHYSNAME macro
Remove FIELD_STATIC_PHYSNAME, replace its uses with field::loc_physname.
Change-Id: Iaa8952410403b4eb5bbd68411feea27e2405d657
Simon Marchi [Fri, 24 Sep 2021 03:47:08 +0000 (23:47 -0400)]
gdb: remove FIELD_ENUMVAL macro
Remove FIELD_ENUMVAL, replace its uses with field::loc_enumval.
Change-Id: Id4861cee91a8bb583a9836f1aa5da0a320fbf4d9
Simon Marchi [Fri, 24 Sep 2021 03:43:13 +0000 (23:43 -0400)]
gdb: remove FIELD_BITPOS macro
Remove FIELD_BITPOD, replace its uses with field::loc_bitpos.
Change-Id: Idb99297e0170661254276c206383a7e9bf1a935a
Simon Marchi [Fri, 24 Sep 2021 03:35:24 +0000 (23:35 -0400)]
gdb: remove FIELD_LOC_KIND macro
Remove FIELD_LOC_KIND, replace its uses with field::loc_kind or
call_site_target::loc_kind.
Change-Id: I0368d8c3ea269d491bb215aa70e32edbdf55f389
Tom Tromey [Fri, 22 Oct 2021 16:49:19 +0000 (10:49 -0600)]
Add gdb.Architecture.integer_type Python function
This adds a new Python function, gdb.Architecture.integer_type, which
can be used to look up an integer type of a given size and
signed-ness. This is useful to avoid dependency on debuginfo when a
particular integer type would be useful.
v2 moves this to be a method on gdb.Architecture and addresses other
review comments.
Tom Tromey [Wed, 20 Oct 2021 20:25:21 +0000 (14:25 -0600)]
Remove ada_value_print_inner
I noticed that the only caller of ada_value_print_inner is
valprint.c:do_val_print (via ada_language::value_print_inner), meaning
that the try/catch logic in this function is redundant. This patch
removes the wrapper function.
Regression tested on x86-64 Fedora 34.
Tom Tromey [Tue, 19 Oct 2021 20:42:04 +0000 (14:42 -0600)]
Document resolve_dynamic_type oddity
Today I re-learned that resolve_dynamic_type can return a type for
which is_dynamic_type returns true. This can happen for an array
whose elements have dynamic type -- the array is reported as dynamic,
but resolving the elements would be incorrect, because each element
might have a different type after resolution.
You can see the special case in resolve_dynamic_array_or_string:
if (ary_dim != NULL && ary_dim->code () == TYPE_CODE_ARRAY)
...
else
...
I looked into having the TYPE_CODE_ARRAY case in
is_dynamic_type_internal follow this same logic, but that breaks down
on the gdb.fortran/dynamic-ptype-whatis.exp test case. In particular
this code in fortran_undetermined::evaluate:
value *callee = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
if (noside == EVAL_AVOID_SIDE_EFFECTS
&& is_dynamic_type (value_type (callee)))
callee = std::get<0> (m_storage)->evaluate (nullptr, exp, EVAL_NORMAL);
... relies on is_dynamic_type returning true for such an array.
I wasn't really sure of the best way to fix this, so in the meantime I
wrote this patch, which documents the oddity so that I might have a
chance of remembering this in the future.
Tom Tromey [Wed, 29 Sep 2021 16:14:52 +0000 (10:14 -0600)]
Avoid self-test failures on x86-linux
The disassembly tests in "maint selftest" will fail on x86-linux.
This happens because opcodes rejects an attempt to disassemble for an
arch with a 64-bit address size when bfd_vma is 32-bit.
This patch avoids this problem by avoiding the test in this case. I
chose to do it this way because this seems to be the only situation
where opcodes checks the size of bfd_vma.
For v2 of this patch, I've also updated memory_error_test to do the
same thing. This is needed due to the "improve error reporting from
the disassembler" patch.
Tom de Vries [Fri, 29 Oct 2021 12:11:08 +0000 (14:11 +0200)]
[gdb/build] Fix build with --disable-unit-tests
A build with --disable-unit-tests currently run into:
...
ld: maint.o: in function \
`maintenance_selftest_completer(cmd_list_element*, completion_tracker&,
char const*, char const*)':
src/gdb/maint.c:1183: undefined reference to \
`selftests::for_each_selftest(
gdb::function_view<
void (std::__cxx11::basic_string<char,std::char_traits<char>,
std::allocator<char> > const&)>)'
...
Fix this by guarding the call to selftests::for_each_selftest in
maintenance_selftest_completer with GDB_SELF_TEST, such that the "-verbose"
completion still works.
Rebuild on x86_64-linux and ran gdb.gdb/unittest.exp.
Enze Li [Fri, 22 Oct 2021 14:30:30 +0000 (14:30 +0000)]
Document "memory-tag-violations".
* gdb/doc/gdb.texinfo: (Data): Document '-memory-tag-violations'.
(Command Options): Update the example.
Tejas Belagod [Tue, 5 Oct 2021 08:43:12 +0000 (08:43 +0000)]
Support for a new pacbti unwind opcode.
This patch adds readelf support for decoding the exception table
opcode for restoring the RA_AUTH_CODE pseudo register defined by the
EHABI
(https://github.com/ARM-software/abi-aa/releases/download/2021Q1/ehabi32.pdf
Section 10.3).
* readelf.c (decode_arm_unwind_bytecode): Add support to decode
restoring RA_AUTH_CODE pseudo register.
Alan Modra [Fri, 29 Oct 2021 09:14:40 +0000 (19:44 +1030)]
Re: arm: add unwinder encoding support for PACBTI
Move the gas testsuite files to where they belong.
Alan Modra [Fri, 29 Oct 2021 04:39:52 +0000 (15:09 +1030)]
ELF core file size checks
Catch fuzzed segments where p_offset + p_filesz wraps, and limit error
output.
* elfcore.h (elf_core_file_p): Rewrite segment checks using
bfd_get_file_size. Set read_only on file size errors.
* elfcode.h (elf_swap_shdr_in): Don't repeat error message.
Alan Modra [Fri, 29 Oct 2021 02:43:17 +0000 (13:13 +1030)]
obcopy vs. files with silly section alignment
We already ignore stupid segment alignment when rewriting headers,
ignore section alignment too.
* elf.c (rewrite_elf_program_header): Ignore section alignment
power greater than 62.
GDB Administrator [Fri, 29 Oct 2021 00:00:18 +0000 (00:00 +0000)]
Automatic date update in version.in
Stafford Horne [Thu, 28 Oct 2021 20:52:28 +0000 (05:52 +0900)]
gdb: Add OpenRISC gdbserver and native config news
The previous patches added gdbserver and native debugging support
for OpenRISC targets. This patch documents that in the news.