Tom Tromey [Sun, 27 Aug 2023 17:37:38 +0000 (11:37 -0600)]
Make various error-related globals thread-local
This changes bfd_error et al to be thread-local.
* Makefile.in: Regenerate.
* aclocal.m4: Include ax_tls.m4.
* ax_tls.m4: New file.
* bfd.c: (bfd_error, input_error, input_bfd, _bfd_error_buf):
Now thread-local.
(bfd_asprintf): Update docs.
* config.in, configure: Regenerate.
* configure.ac: Call AX_TLS.
* po/bfd.pot: Regenerate.
Tom Tromey [Sun, 27 Aug 2023 18:11:00 +0000 (12:11 -0600)]
Make _bfd_error_buf static
This makes _bfd_error_buf static and adds a way to clear it. I felt
that this made the subsequent patches a little cleaner.
* bfd.c (_bfd_error_buf): Now static.
(bfd_set_input_error): Use _bfd_clear_error_data.
(_bfd_clear_error_data): New function.
(bfd_init): Use _bfd_clear_error_data.
* libbfd.h: Regenerate.
* opncls.c (bfd_close_all_done): Use _bfd_clear_error_data.
* po/bfd.pot: Regenerate.
GDB Administrator [Wed, 8 Nov 2023 00:00:26 +0000 (00:00 +0000)]
Automatic date update in version.in
Victor Do Nascimento [Tue, 12 Sep 2023 12:10:14 +0000 (13:10 +0100)]
aarch64: Add LSE128 instructions
Implement, together with the necessary tests, the following new LSE128
atomic instructions:
* Atomic bit clear on quadword in memory (ldclrp{a|l|al});
* Atomic bit set on quadword in memory (ldsetp{a|l|al});
* Swap quadword in memory (swpp{a|l|al});
gas/ChangeLog:
* testsuite/gas/aarch64/lse128-atomic.d: New.
* testsuite/gas/aarch64/lse128-atomic.s: Likewise.
opcodes/ChangeLog:
* aarch64-tbl.h (ldclrp): new _LSE128_INSN entry.
(ldclrpa): Likewise.
(ldclrpal): Likewise.
(ldclrpl): Likewise.
(ldsetp): Likewise.
(ldsetpa): Likewise.
(ldsetpal): Likewise.
(ldsetpl): Likewise.
(swpp): Likewise.
(swppa): Likewise.
(swppal): Likewise.
(swppl): Likewise.
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Likewise.
* aarch64-opc-2.c: Likewise.
Victor Do Nascimento [Mon, 30 Oct 2023 12:39:28 +0000 (12:39 +0000)]
aarch64: Add arch support for LSE128 extension
Enable the `+lse128' feature modifier which, together with new
internal feature flags, enables LSE128 instructions, which are
represented via the new `_LSE128_INSN' macro.
gas/ChangeLog:
* config/tc-aarch64.c (aarch64_features): Add new "lse128"
entry.
include/ChangeLog:
* include/opcode/aarch64.h (enum aarch64_feature_bit): New
AARCH64_FEATURE_LSE128 feature bit.
(enum aarch64_insn_class): New lse128_atomic instruction class.
opcodes/ChangeLog:
* opcodes/aarch64-tbl.h (aarch64_feature_lse128): New.
(LSE128): Likewise.
(_LSE128_INSN): Likewise.
Victor Do Nascimento [Mon, 30 Oct 2023 11:47:23 +0000 (11:47 +0000)]
aarch64: Add LSE128 instruction operand support
Given the particular encoding of the LSE128 instructions, create the
necessary shared input+output operand register description and
handling in the code to allow for the encoding of the LSE128 128-bit
atomic operations.
gas/ChangeLog:
* config/tc-aarch64.c (parse_operands):
include/ChangeLog:
* opcode/aarch64.h (enum aarch64_opnd):
opcodes/ChangeLog:
* aarch64-opc.c (fields):
(aarch64_print_operand):
* aarch64-opc.h (enum aarch64_field_kind):
* aarch64-tbl.h (AARCH64_OPERANDS):
Victor Do Nascimento [Wed, 1 Nov 2023 13:18:08 +0000 (13:18 +0000)]
aarch64: Add 128-bit system register flags
In preparation for the implementation of 128-bit system register
support across the toolchain, this patch adds the feature flag
F_REG_128 and adds it to relevant system registers in
`aarch64-sys-regs.def'.
Given the shared nature of this file, this change is made necessary
initially to implement argument validation in the `__arm_rsr128' and
`__armwsr128' ACLE intrinsics in GCC, but will be of subsequent use in
the binutils implementation of the corresponding `mrrs' and `msrr'
instructions.
Regression tested on aarch64-linux-gnu, no regressions.
opcodes/ChangeLog:
* aarch64-opc.h (F_REG_128): New flag.
* aarch64-sys-regs.def (par_el1): Add F_REG_128 flag.
(rcwmask_el1): Likewise.
(rcwsmask_el1): Likewise.
(ttbr0_el1): Likewise.
(ttbr0_el12): Likewise.
(ttbr0_el2): Likewise.
(ttbr1_el1): Likewise.
(ttbr1_el12): Likewise.
(ttbr1_el2): Likewise.
(vttbr_el2): Likewise.
Victor Do Nascimento [Wed, 1 Nov 2023 13:44:45 +0000 (13:44 +0000)]
aarch64: Add THE system register support
Add Binutils support for system registers associated with the
Translation Hardening Extension (THE).
In doing so, we also add core feature support for THE, enabling its
associated feature flag and implementing the necessary
feature-checking machinery.
Regression tested on aarch64-linux-gnu, no regressions.
gas/ChangeLog:
* config/tc-aarch64.c (aarch64_features): Add "+the" feature modifier.
* doc/c-aarch64.texi (AArch64 Extensions): Update
documentation for `the' option.
* testsuite/gas/aarch64/sysreg-8.s: Add tests for `the'
associated system registers.
* testsuite/gas/aarch64/sysreg-8.d: Likewise.
include/ChangeLog:
* opcode/aarch64.h (enum aarch64_feature_bit): Add
AARCH64_FEATURE_THE.
opcode/ChangeLog:
* aarch64-opc.c (aarch64_sys_ins_reg_supported_p): Add `the'
system register check support.
* aarch64-sys-regs.def: Add `rcwmask_el1' and `rcwsmask_el1'
* aarch64-tbl.h: Define `THE' preprocessor macro.
Simon Marchi [Tue, 7 Nov 2023 16:11:18 +0000 (11:11 -0500)]
gdb/arm: remove thumb bit in arm_adjust_breakpoint_address
When compiling gdb with -fsanitize=address on ARM, I get a crash in test
gdb.arch/arm-disp-step.exp, reproduced easily with:
$ ./gdb -nx -q --data-directory=data-directory testsuite/outputs/gdb.arch/arm-disp-step/arm-disp-step -ex "break *test_call_end"
Reading symbols from testsuite/outputs/gdb.arch/arm-disp-step/arm-disp-step...
=================================================================
==23295==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xb4a14fd1 at pc 0x01a48871 bp 0xbeab8490 sp 0xbeab8494
Since it doesn't require running the program, it can be reproduced locally on a
dev machine other than ARM, after acquiring the test binary.
The length of the allocate buffer `buf` is 1, and we try to extract an
integer of size 2 from it. The length of 1 comes from the subtraction
`bpaddr - boundary`. Normally, on ARM, all instructions are aligned on
a multiple of 2, so it's weird for this subtraction to result in 1. In
this case, boundary comes from the result of find_pc_partial_function
returning 0x549:
(gdb) p/x bpaddr
$2 = 0x54a
(gdb) p/x boundary
$3 = 0x549
(gdb) p/x bpaddr - boundary
$4 = 0x1
0x549 is the address of the test_call_subr label, 0x548, with the thumb
bit enabled. Before doing some math with the address, I think we need
to strip the thumb bit, like is done elsewhere (for instance for bpaddr
earlier in the same function).
I wonder if find_pc_partial_function should do that itself, in order to
return an address that is suitable for arithmetic. In any case, that
would be a change with a broad impact, so for now just fix the issue
locally.
After the patch:
$ ./gdb -nx -q --data-directory=data-directory testsuite/outputs/gdb.arch/arm-disp-step/arm-disp-step -ex "break *test_call_end"
Reading symbols from testsuite/outputs/gdb.arch/arm-disp-step/arm-disp-step...
Breakpoint 1 at 0x54a: file /home/smarchi/src/binutils-gdb/gdb/testsuite/gdb.arch/arm-disp-step.S, line 103.
Change-Id: I74fc458dbea0d2c1e1f5eadd90755188df089288
Approved-By: Luis Machado <luis.machado@arm.com>
Jan Beulich [Tue, 7 Nov 2023 12:58:32 +0000 (13:58 +0100)]
ld/x86: reduce testsuite dependency on system object files
PR ld/30722
Tests looking for certain .note-section recorded properties may not
involve object files from the underlying platform (e.g. via using the C
compiler for linking): Such object files may themselves have similar
note sections, and hence they may influence the overall outcome.
For now convert just the tests known to be affected by crt*.o coming
with "ISA v3 needed" notes. Eventually other tests ought to be
converted, too.
Jan Beulich [Tue, 7 Nov 2023 12:54:57 +0000 (13:54 +0100)]
Revert "ld x86_64 tests: Accept x86-64-v3 as a needed ISA"
This reverts commit
bf77f42f6708d8b5ba92336d876042826d8d29c1.
It wrongly altered testcase expectations; the issue will need
taking care of differently.
Mary Bennett [Mon, 2 Oct 2023 02:02:06 +0000 (03:02 +0100)]
RISC-V: Add support for XCValu extension in CV32E40P
Spec: https://docs.openhwgroup.org/projects/cv32e40p-user-manual/en/latest/instruction_set_extensions.html
Contributors:
Mary Bennett <mary.bennett@embecosm.com>
Nandni Jamnadas <nandni.jamnadas@embecosm.com>
Pietra Ferreira <pietra.ferreira@embecosm.com>
Charlie Keaney
Jessica Mills
Craig Blackmore <craig.blackmore@embecosm.com>
Simon Cook <simon.cook@embecosm.com>
Jeremy Bennett <jeremy.bennett@embecosm.com>
Helene Chelin <helene.chelin@embecosm.com>
bfd/ChangeLog:
* elfxx-riscv.c (riscv_multi_subset_supports): Added `xcvalu`
instruction class.
(riscv_multi_subset_supports_ext): Likewise.
gas/ChangeLog:
* config/tc-riscv.c (validate_riscv_insn): Added the necessary
operands for the extension.
(riscv_ip): Likewise.
* doc/c-riscv.texi: Noted XCValu as an additional ISA extension
for CORE-V.
* testsuite/gas/riscv/cv-alu-boundaries.d: New test.
* testsuite/gas/riscv/cv-alu-boundaries.l: New test.
* testsuite/gas/riscv/cv-alu-boundaries.s: New test.
* testsuite/gas/riscv/cv-alu-fail-march.d: New test.
* testsuite/gas/riscv/cv-alu-fail-march.l: New test.
* testsuite/gas/riscv/cv-alu-fail-march.s: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-01.d: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-01.l: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-01.s: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-02.d: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-02.l: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-02.s: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-03.d: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-03.l: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-03.s: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-04.d: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-04.l: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-04.s: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-05.d: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-05.l: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-05.s: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-06.d: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-06.l: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-06.s: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-07.d: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-07.l: New test.
* testsuite/gas/riscv/cv-alu-fail-operand-07.s: New test.
* testsuite/gas/riscv/cv-alu-insns.d: New test.
* testsuite/gas/riscv/cv-alu-insns.s: New test.
opcodes/ChangeLog:
* riscv-dis.c (print_insn_args): Disassemble xcb operand.
* riscv-opc.c: Defined the MASK and added XCValu instructions.
include/ChangeLog:
* opcode/riscv-opc.h: Added corresponding MATCH and MASK macros
for XCValu.
* opcode/riscv.h: Added corresponding EXTRACT and ENCODE macros
for XCValu.
(enum riscv_insn_class): Added the XCValu instruction class.
Mary Bennett [Mon, 2 Oct 2023 02:02:05 +0000 (03:02 +0100)]
RISC-V: Add support for XCVmac extension in CV32E40P
Spec: https://docs.openhwgroup.org/projects/cv32e40p-user-manual/en/latest/instruction_set_extensions.html
Contributors:
Mary Bennett <mary.bennett@embecosm.com>
Nandni Jamnadas <nandni.jamnadas@embecosm.com>
Pietra Ferreira <pietra.ferreira@embecosm.com>
Charlie Keaney
Jessica Mills
Craig Blackmore <craig.blackmore@embecosm.com>
Simon Cook <simon.cook@embecosm.com>
Jeremy Bennett <jeremy.bennett@embecosm.com>
Helene Chelin <helene.chelin@embecosm.com>
bfd/ChangeLog:
* elfxx-riscv.c (riscv_multi_subset_supports): Added `xcvmac`
instruction class.
(riscv_multi_subset_supports_ext): Likewise.
gas/ChangeLog:
* config/tc-riscv.c (validate_riscv_insn): Added the necessary
operands for the extension.
(riscv_ip): Likewise.
* doc/c-riscv.texi: Noted XCVmac as an additional ISA extension
for CORE-V.
* testsuite/gas/riscv/cv-mac-fail-march.d: New test.
* testsuite/gas/riscv/cv-mac-fail-march.l: New test.
* testsuite/gas/riscv/cv-mac-fail-march.s: New test.
* testsuite/gas/riscv/cv-mac-fail-operand.d: New test.
* testsuite/gas/riscv/cv-mac-fail-operand.l: New test.
* testsuite/gas/riscv/cv-mac-fail-operand.s: New test.
* testsuite/gas/riscv/cv-mac-insns.d: New test.
* testsuite/gas/riscv/cv-mac-insns.s: New test.
opcodes/ChangeLog:
* riscv-dis.c (print_insn_args): Disassemble information with
the EXTRACT macro implemented.
* riscv-opc.c: Defined the MASK and added
XCVmac instructions.
include/ChangeLog:
* opcode/riscv-opc.h: Added corresponding MATCH and MASK macros
for XCVmac.
* opcode/riscv.h: Added corresponding EXTRACT and ENCODE macros
for uimm.
(enum riscv_insn_class): Added the XCVmac instruction class.
Tom Tromey [Mon, 6 Nov 2023 16:31:03 +0000 (09:31 -0700)]
Remove EXTERN_C and related defines
common-defs.h has a few defines that I suspect were used during the
transition to C++. These aren't needed any more, so remove them.
Tested by rebuilding.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Approved-By: Andrew Burgess <aburgess@redhat.com>
GDB Administrator [Tue, 7 Nov 2023 00:00:18 +0000 (00:00 +0000)]
Automatic date update in version.in
Carl Love [Mon, 6 Nov 2023 22:08:27 +0000 (17:08 -0500)]
gdb: Update email address for Carl Love in gdb/MAINTAINERS
Hannes Domani [Mon, 6 Nov 2023 17:32:41 +0000 (18:32 +0100)]
Fix resizing of TUI python windows
When resizing from a big to small terminal size, and you have a
TUI python window that would then be outside of the new size,
valgrind shows this error:
==3389== Invalid read of size 1
==3389== at 0xC3DFEE: wnoutrefresh (lib_refresh.c:167)
==3389== by 0xC3E3C9: wrefresh (lib_refresh.c:63)
==3389== by 0xA9766C: tui_unhighlight_win(tui_win_info*) (tui-wingeneral.c:134)
==3389== by 0x98921C: tui_py_window::rerender() (py-tui.c:183)
==3389== by 0xA8C23C: tui_layout_split::apply(int, int, int, int, bool) (tui-layout.c:1030)
==3389== by 0xA8C2A2: tui_layout_split::apply(int, int, int, int, bool) (tui-layout.c:1033)
==3389== by 0xA8C23C: tui_layout_split::apply(int, int, int, int, bool) (tui-layout.c:1030)
==3389== by 0xA8B1F8: tui_apply_current_layout(bool) (tui-layout.c:81)
==3389== by 0xA95CDB: tui_resize_all() (tui-win.c:525)
==3389== by 0xA95D1E: tui_async_resize_screen(void*) (tui-win.c:562)
==3389== by 0x6B855D: invoke_async_signal_handlers() (async-event.c:234)
==3389== by 0xC0CEF8: gdb_do_one_event(int) (event-loop.cc:199)
==3389== Address 0x115cc214 is 1,332 bytes inside a block of size 2,240 free'd
==3389== at 0x4A0A430: free (vg_replace_malloc.c:446)
==3389== by 0xC3CF7D: _nc_freewin (lib_newwin.c:121)
==3389== by 0xA8B1C6: tui_apply_current_layout(bool) (tui-layout.c:78)
==3389== by 0xA95CDB: tui_resize_all() (tui-win.c:525)
==3389== by 0xA95D1E: tui_async_resize_screen(void*) (tui-win.c:562)
==3389== by 0x6B855D: invoke_async_signal_handlers() (async-event.c:234)
==3389== by 0xC0CEF8: gdb_do_one_event(int) (event-loop.cc:199)
==3389== by 0x8E40E9: captured_command_loop() (main.c:407)
==3389== by 0x8E5E54: gdb_main(captured_main_args*) (main.c:1324)
==3389== by 0x62AC04: main (gdb.c:39)
It's because tui_py_window::m_inner_window still has the outside
coordinates, and wnoutrefresh then does an out-of-bounds access.
Fix this by resetting m_inner_window on every resize, it will anyways
be recreated in the next rerender call.
Approved-By: Andrew Burgess <aburgess@redhat.com>
Aditya Vidyadhar Kamath [Mon, 6 Nov 2023 13:26:24 +0000 (07:26 -0600)]
Change gdb.base/examine-backwards.exp for AIX.
In AIX unused or constant variables are collected as garbage by the linker and in the dwarf dump
an address with all f's in hexadecimal are assigned. Hence the testcase fails with many failures stating
it cannot access memory.
This patch is a small change to get it working in AIX as well.
Nick Clifton [Mon, 6 Nov 2023 13:59:53 +0000 (13:59 +0000)]
ld: =fillexp different behaviors for hexidecimal literal
PR 30865
* ld.texi: Update description of the FILL command.
* testsuite/ld-scripts/fill2.d: New test.
* testsuite/ld-scripts/fill2.t: New test source.
* testsuite/ld-scripts/data.exp: Run the new test.
Nelson Chu [Mon, 6 Nov 2023 09:33:21 +0000 (17:33 +0800)]
RISC-V: Make sure rv32q conflict won't affect the fp-q-insns-32 gas testcase.
Same as commit
4352c0ac04a.
gas/
* testsuite/gas/riscv/fp-q-insns-32.d: Set q to v2.2.
Nelson Chu [Mon, 6 Nov 2023 05:28:51 +0000 (13:28 +0800)]
RISC-V: Moved out linker internal relocations after R_RISCV_max.
Just the lightest modifications about this, without any further checks and
considering --emit-relocs. We will need to improve it in the future, but
first do this to avoid conflicts between linker internal relocations and the
new definition of psabi. For example, TLSDESC relocs.
Passed riscv-gnu-toolchain regressions, so should be safe enough to commit.
Co-authored-by: Tsukasa OI <research_trasio@irq.a4lg.com>
bfd/
* reloc.c: Removed linker internal relocations.
* bfd-in2.h: Regenerated.
* libbfd.h: Regenerated.
* elfnn-riscv.c: Defined R_RISCV_DELETE in include/elf/riscv.h.
* elfxx-riscv.c (howto_table, howto_table_internal): Moved linker
internal relocations from howto_table into howto_table_internal.
(riscv_reloc_map): Removed linker internal relocations mapping.
(riscv_elf_rtype_to_howto): Return howto of linker internal
relocations from howto_table_internal.
include/
* elf/riscv.h: Defined linker internal relocations after R_RISCV_max.
Tom de Vries [Mon, 6 Nov 2023 07:32:54 +0000 (08:32 +0100)]
[gdb/testsuite] Fix gdb.dwarf2/dw2-gas-workaround.exp
Recently added test-case gdb.dwarf2/dw2-gas-workaround.exp:
- passes when gdb is configured using $(cd ../src; pwd)/configure, but
- fails when using ../src/configure.
Fix this by making the matching more precise:
...
- -re -wrap "$objdir.*" {
+ -re -wrap "name_for_id = $objdir/$srcfile\r\n.*" {
...
such that we only fail on the line:
...
[symtab-create] start_subfile: name = dw2-lines.c, name_for_id = \
/data/vries/gdb/leap-15-4/build/gdb/testsuite/dw2-lines.c^M
...
Reported-By: Carl Love <cel@us.ibm.com>
GDB Administrator [Mon, 6 Nov 2023 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Mon, 23 Oct 2023 22:44:53 +0000 (16:44 -0600)]
Pre-read DWZ file in DWARF reader
While working on background reading of DWARF, I came across the
DWZ-reading code. This code can query the user (via the debuginfod
support) -- something that cannot be done off the main thread.
Looking into it, I realized that this code can be run much earlier,
avoiding this problem. Digging a bit deeper, I also found a
discrepancy here between how the DWARF reader works in "readnow" mode
as compared to the normal modes.
This patch cleans this up by trying to read the DWZ file earlier, and
also by having the DWARF reader convert any exception here into a
warning. This unifies the various cases, but also makes it so that
errors do not prevent gdb from continuing on to the extent possible.
Regression tested on x86-64 Fedora 38.
GDB Administrator [Sun, 5 Nov 2023 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
GDB Administrator [Sat, 4 Nov 2023 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Fri, 3 Nov 2023 19:24:08 +0000 (13:24 -0600)]
Remove unused declaration
I found a declaration in py-stopevent.h for which there is no
definition. This patch removes it.
Simon Marchi [Fri, 3 Nov 2023 03:19:09 +0000 (23:19 -0400)]
gdbsupport: mark array_view::slice with [[nodiscard]]
I (almost) had a bug where I did:
buffer.slice (...)
but I meant:
buffer = buffer.slice (...)
The first one does nothing, it creates a new array_view but without
using it, it's useless. Mark the slice methods with [[nodiscard]]
(which is standard C++17) so that error would generate a warning.
I guess that many functions could be marked as nodiscard, essentially
function that is pure (doesn't have side-effects). But this one seems
particularly easy to mis-use.
Change-Id: Ib39a0a65a5728a3cfd68a02ae31635810baeaccb
Approved-By: Tom Tromey <tom@tromey.com>
Simon Marchi [Fri, 3 Nov 2023 15:51:37 +0000 (11:51 -0400)]
gdbsupport: record and print failed selftest names
Since "maint selftest" now runs quite a lot of tests (especially in an
all-targets build), I thought it would be useful to print a summary at
the end of what failed. So, implement that.
Print the summary before the "Ran %d unit tests, %zu failed\n" line, so
that that one remains the last line, and the gdb.gdb/unittest.exp
doesn't need to be changed.
The output looks like (if I force a failure in a test):
(gdb) maint selftest
...
Running selftest value_copy.
Running selftest xml_escape_text.
Running selftest xml_escape_text_append.
Failures:
aarch64-analyze-prologue
Ran 4134 unit tests, 1 failed
(gdb)
Change-Id: If3aaabdd6f8078d0e6e50e8d08f3e558ab85277e
Approved-By: Tom Tromey <tom@tromey.com>
Jan Beulich [Fri, 3 Nov 2023 12:33:38 +0000 (13:33 +0100)]
gas: correct ignoring of C-style number suffixes
First of all the respective original changes didn't deal with just 0
having such a suffix - this needs additional logic outside of
integer_constant(). Further bogus suffixes having more than two L-s
were accepted, while valid suffixes with U following the L(s) weren't.
Finally respective tests were introduced for Sparc only.
Reviewed-by: Neal Frager <neal.frager@amd.com>
Jan Beulich [Fri, 3 Nov 2023 09:03:36 +0000 (10:03 +0100)]
RISC-V: reduce redundancy in load/store macro insn handling
Within the groups L{B,BU,H,HU,W,WU,D}, S{B,H,W,D}, FL{H,W,D,Q}, and
FS{H,W,D,Q} the sole difference between the handling is the insn
mnemonic passed to the common handling functions. The intended mnemonic,
however, can easily be retrieved. Furthermore leverags that Sx and FSx
are then handled identically, too, and hence their cases can also be
folded.
Jan Beulich [Fri, 3 Nov 2023 09:03:03 +0000 (10:03 +0100)]
RISC-V: Lx/Sx macro insn tests
Make sure these (continue to) work as intended.
Jan Beulich [Fri, 3 Nov 2023 09:02:27 +0000 (10:02 +0100)]
RISC-V: add F- and D-extension testcases
Make sure future changes won't regress any of this. Also cover the FLH
and FSH macro insns of the Zfh extension.
Jan Beulich [Fri, 3 Nov 2023 09:01:19 +0000 (10:01 +0100)]
RISC-V: make FLQ/FSQ macro-insns work
When support for the Q extension was added, the libopcodes side of these
macro-insns was properly covered, but no backing support in gas was
added. In new testcases cover not just these, but all Q-extension insns.
GDB Administrator [Fri, 3 Nov 2023 00:00:13 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Thu, 2 Nov 2023 18:05:21 +0000 (19:05 +0100)]
[gdb/tdep] Fix nr array elements in ppc64_aggregate_candidate
On AlmaLinux 9.2 powerpc64le I run into:
...
(gdb) PASS: gdb.ada/array_return.exp: continuing to Create_Small_Float_Vector
finish^M
Run till exit from #0 pck.create_small_float_vector () at pck.adb:30^M
0x00000000100022d4 in p () at p.adb:25^M
25 Vector := Create_Small_Float_Vector;^M
Value returned is $3 = (2.
80259693e-45, 2.
80259693e-45)^M
(gdb) FAIL: gdb.ada/array_return.exp: value printed by finish of Create_Small_Float_Vector
...
while this is expected:
...
Value returned is $3 = (4.25, 4.25)^M
...
The problem is here in ppc64_aggregate_candidate:
...
if (!get_array_bounds (type, &low_bound, &high_bound))
return -1;
count *= high_bound - low_bound
...
The array type (containing 2 elements) is:
...
type Small_Float_Vector is array (1 .. 2) of Float;
...
so we have:
...
(gdb) p low_bound
$1 = 1
(gdb) p high_bound
$2 = 2
...
but we calculate the number of elements in the array using
"high_bound - low_bound", which is 1.
Consequently, gdb fails to correctly classify the type as a ELFv2 homogeneous
aggregate.
Fix this by calculating the number of elements in the array by using
"high_bound - low_bound + 1" instead.
Furthermore, high_bound can (in general, though perhaps not here) also be
smaller than low_bound, so to be safe take that into account as well:
...
LONGEST nr_array_elements = (low_bound > high_bound
? 0
: (high_bound - low_bound + 1));
count *= nr_array_elements;
...
Tested on powerpc64le-linux.
Approved-By: Ulrich Weigand <uweigand@de.ibm.com>
PR tdep/31015
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31015
Srinath Parvathaneni [Thu, 2 Nov 2023 13:10:37 +0000 (13:10 +0000)]
aarch64: Add GCS system registers.
This patch adds support for 10 new AArch64 system registers
(gcscre0_el1, gcscr_el1, gcscr_el12, gcscr_el2, gcscr_el3,
gcspr_el0, gcspr_el1 ,gcspr_el12, gcspr_el2 and gcspr_el3),
which are enabled on using Guarded Control Stack (+gcs flag)
feature.
Srinath Parvathaneni [Thu, 2 Nov 2023 13:07:29 +0000 (13:07 +0000)]
aarch64: Add support for GCSB DSYNC instruction.
This patch adds support for Guarded control stack data synchronization
instruction (GCSB DSYNC). This instruction is allocated to existing
HINT space and uses the HINT number 19 and to match this an entry is
added to the aarch64_hint_options array.
srinath [Thu, 2 Nov 2023 13:04:20 +0000 (13:04 +0000)]
aarch64: Add support for GCS extension.
This patch adds for Guarded Control Stack Extension (GCS) extension. GCS feature is
optional from Armv9.4-A architecture and enabled by passing +gcs option to -march
(eg: -march=armv9.4-a+gcs) or using ".arch_extension gcs" directive in the assembly file.
Also this patch adds support for GCS instructions gcspushx, gcspopcx, gcspopx,
gcsss1, gcsss2, gcspushm, gcspopm, gcsstr and gcssttr.
Srinath Parvathaneni [Thu, 2 Nov 2023 12:44:13 +0000 (12:44 +0000)]
aarch64: Add support for Check Feature Status Extension.
This patch adds support for Check Feature Status Extension (CHK) which
is mandatory from Armv8.0-A. Also this patch supports "chkfeat" instruction
(hint #40).
srinath [Thu, 2 Nov 2023 12:40:29 +0000 (12:40 +0000)]
aarch64: Add support for Armv8.9-A and Armv9.4-A Architectures.
This patch adds AArch64 support for Armv8.9-A architecture (-march=armv8.9-a)
and Armv9.4-A architecture (-march=armv9.4-a).
Nick Clifton [Thu, 2 Nov 2023 09:57:39 +0000 (09:57 +0000)]
ld x86_64 tests: Accept x86-64-v3 as a needed ISA
* testsuite/ld-x86-64/property-3.r: Update regexp to allow for targets which support x86-64-v3.
* testsuite/ld-x86-64/property-4.r: Likewise.
* testsuite/ld-x86-64/property-5.r: Likewise.
Vladimir Mezentsev [Tue, 31 Oct 2023 19:11:45 +0000 (12:11 -0700)]
gprofng: remove dependency on help2man
help2man is no longer used to create the gprofng man pages.
gprofng/ChangeLog
2023-10-31 Vladimir Mezentsev <vladimir.mezentsev@oracle.com>
* configure.ac: Remove HELP2MAN.
* Makefile.in: Rebuild.
* configure: Rebuild.
* doc/Makefile.in: Rebuild.
* gp-display-html/Makefile.in: Rebuild.
* src/Makefile.in: Rebuild.
GDB Administrator [Thu, 2 Nov 2023 00:00:15 +0000 (00:00 +0000)]
Automatic date update in version.in
Simon Marchi [Tue, 31 Oct 2023 03:22:03 +0000 (03:22 +0000)]
gdb: use gdb::byte_vector instead of gdb::def_vector<gdb_byte>
Use the gdb::byte_vector typedef when possible.
Change-Id: Ib2199201c052496992011ea02979de023d4d8a9a
Nick Clifton [Wed, 1 Nov 2023 15:51:44 +0000 (15:51 +0000)]
Fix typo in recent update to the ld/NEWS file
Nick Clifton [Wed, 1 Nov 2023 13:51:17 +0000 (13:51 +0000)]
ld: Support input section description keyword: REVERSE
PR 27565
* ldlex.l: Add REVERSE.
* ldgram.y: Allow REVERSE to be used wherever a sorting command can be used.
* ld.h (struct wildcard_spec): Add 'reversed' field.
* ldlang.h (lang_wild_statement_struct): Add 'filenames_reversed' field.
* ldlang.c (compare_sections): Add reversed parameter. (wild_sort): Reverse the comparison if requested. (print_wild_statement): Handle the reversed field.
* ld.texi: Document the new feature.
* NEWS: Mention the new feature.
* testsuite/ld-scripts/sort-file-reversed-1.d: New test driver.
* testsuite/ld-scripts/sort-file-reversed-1.t: New test source.
* testsuite/ld-scripts/sort-file-reversed-2.t: New test source.
* testsuite/ld-scripts/sort-file-reversed-2.d: New test driver.
* testsuite/ld-scripts/sort-sections-reversed-1.d: New test driver.
* testsuite/ld-scripts/sort-sections-reversed-1.t: New test source.
* testsuite/ld-scripts/sort-sections-reversed-2.t: New test source.
* testsuite/ld-scripts/sort-sections-reversed-2.d: New test driver.
* testsuite/ld-scripts/sort-sections-reversed-3.d: New test driver.
* testsuite/ld-scripts/sort-sections-reversed-3.t: New test source.
GDB Administrator [Wed, 1 Nov 2023 00:00:16 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Tue, 31 Oct 2023 23:33:12 +0000 (00:33 +0100)]
[gdb/symtab] Work around gas PR28629
When running test-case gdb.tui/tui-layout-asm-short-prog.exp on AlmaLinux 9.2
ppc64le, I run into:
...
FAIL: gdb.tui/tui-layout-asm-short-prog.exp: check asm box contents
...
The problem is that we get:
...
7 [ No Assembly Available ]
...
because tui_get_begin_asm_address doesn't succeed.
In more detail, tui_get_begin_asm_address calls:
...
find_line_pc (sal.symtab, sal.line, &addr);
...
with:
...
(gdb) p *sal.symtab
$5 = {next = 0x130393c0, m_compunit = 0x130392f0, m_linetable = 0x0,
filename = "tui-layout-asm-short-prog.S",
filename_for_id = "$gdb/build/gdb/testsuite/tui-layout-asm-short-prog.S",
m_language = language_asm, fullname = 0x0}
(gdb) p sal.line
$6 = 1
...
The problem is the filename_for_id which is the source file prefixed with the
compilation dir rather than the source dir.
This is due to faulty debug info generated by gas, PR28629:
...
<1a> DW_AT_name : tui-layout-asm-short-prog.S
<1e> DW_AT_comp_dir : $gdb/build/gdb/testsuite
<22> DW_AT_producer : GNU AS 2.35.2
...
The DW_AT_name is relative, and it's relative to the DW_AT_comp_dir entry,
making the effective name $gdb/build/gdb/testsuite/tui-layout-asm-short-prog.S.
The bug is fixed starting version 2.38, where we get instead:
...
<1a> DW_AT_name :
$gdb/src/gdb/testsuite/gdb.tui/tui-layout-asm-short-prog.S
<1e> DW_AT_comp_dir : $gdb/build/gdb/testsuite
<22> DW_AT_producer : GNU AS 2.38
...
Work around the faulty debug info by constructing the filename_for_id using
the second directory from the directory table in the .debug_line header:
...
The Directory Table (offset 0x22, lines 2, columns 1):
Entry Name
0 $gdb/build/gdb/testsuite
1 $gdb/src/gdb/testsuite/gdb.tui
...
Note that the used gas contains a backport of commit
3417bfca676 ("GAS:
DWARF-5: Ensure that the 0'th entry in the directory table contains the
current working directory."), because directory 0 is correct. With the
unpatched 2.35.2 release the directory 0 entry is incorrect: it's a copy of
entry 1.
Add a dwarf assembly test-case that reflects the debug info as generated by
unpatched gas 2.35.2.
Tested on x86_64-linux.
Approved-By: Tom Tromey <tom@tromey.com>
Tom de Vries [Tue, 31 Oct 2023 23:33:12 +0000 (00:33 +0100)]
[gdb/symtab] Add producer_is_gas
Add producer_is_gas, a generic way to get the gas version from the
producer string.
Tested on x86_64-linux.
Tom Tromey [Thu, 5 Oct 2023 12:27:50 +0000 (06:27 -0600)]
Implement DAP setVariable request
This patch implements the DAP setVariable request.
setVariable is a bit odd in that it specifies the variable to modify
by passing in the variable's container and the name of the variable.
This approach can't handle variable shadowing (there are a couple of
open DAP bugs on this topic), so this patch renames duplicates to
avoid the problem.
Hu, Lin1 [Tue, 31 Oct 2023 08:23:53 +0000 (16:23 +0800)]
Support Intel USER_MSR
This patches aims to support Intel USER_MSR. In addition to the usual
support, this patch includes encoding and decoding support for MAP7 and
immediate numbers as the last operand (ATT style).
gas/ChangeLog:
* NEWS: Support Intel USER_MSR.
* config/tc-i386.c (smallest_imm_type): Reject imm32 in 64bit
mode.
(build_vex_prefix): Add VEXMAP7.
(md_assemble): Handling the imm32 of USER_MSR.
(match_template): Handling the unusual immediate.
* doc/c-i386.texi: Document .user_msr.
* testsuite/gas/i386/i386.exp: Run USER_MSR tests.
* testsuite/gas/i386/x86-64.exp: Ditto.
* testsuite/gas/i386/user_msr-inval.l: New test.
* testsuite/gas/i386/user_msr-inval.s: Ditto.
* testsuite/gas/i386/x86-64-user_msr-intel.d: Ditto.
* testsuite/gas/i386/x86-64-user_msr-inval.l: Ditto.
* testsuite/gas/i386/x86-64-user_msr-inval.s: Ditto.
* testsuite/gas/i386/x86-64-user_msr.d: Ditto.
* testsuite/gas/i386/x86-64-user_msr.s: Ditto.
opcodes/ChangeLog:
* i386-dis.c (struct instr_info): Add a new attribute
has_skipped_modrm.
(Gq): New.
(Rq): Ditto.
(q_mm_mode): Ditto.
(Nq): Change mode from q_mode to q_mm_mode.
(VEX_LEN_TABLE):
(get_valid_dis386): Add VEX_MAP7 in VEX prefix.
and handle the map7_f8 for save space.
(OP_Skip_MODRM): Set has_skipped_modrm.
(OP_E): Skip codep++ when has skipped modrm byte.
(OP_R): Support q_mode and q_mm_mode.
(REG_VEX_MAP7_F8_L_0_W_0): New.
(PREFIX_VEX_MAP7_F8_L_0_W_0_R_0_X86_64): Ditto.
(X86_64_VEX_MAP7_F8_L_0_W_0_R_0): Ditto.
(VEX_LEN_MAP7_F8): Ditto.
(VEX_W_MAP7_F8_L_0): Ditto.
(MOD_0F38F8): Ditto.
(PREFIX_0F38F8_M_0): Ditto.
(PREFIX_0F38F8_M_1_X86_64): Ditto.
(X86_64_0F38F8_M_1): Ditto.
(PREFIX_0F38F8): Remove.
(prefix_table): Add PREFIX_0F38F8_M_1_X86_64.
Remove PREFIX_0F38F8.
(reg_table): Add REG_VEX_MAP7_F8_L_0_W_0,
PREFIX_VEX_MAP7_F8_L_0_W_0_R_0_X86_64.
(x86_64_table): Add X86_64_0F38F8_PREFIX_3_M_1,
X86_64_VEX_MAP7_F8_L_0_W_0_R_0 and X86_64_0F38F8_M_1.
(vex_table): Add VEX_MAP7.
(vex_len_table): Add VEX_LEN_MAP7_F8,
VEX_W_MAP7_F8_L_0.
(mod_table): New entry for USER_MSR and
add MOD_0F38F8.
* i386-gen.c (cpu_flag_init): Add CPU_USER_MSR_FLAGS and
CPU_ANY_USER_MSR_FLAGS. Add add VEXMAP7.
* i386-init.h: Regenerated.
* i386-mnem.h: Ditto.
* i386-opc.h (SPACE_VEXMAP7): New.
(CPU_USER_MSR_FLAGS): Ditoo.
(CPU_ANY_USER_MSR_FLAGS): Ditto.
(i386_cpu_flags): Add cpuuser_msr.
* i386-opc.tbl: Add USER_MSR instructions.
* i386-tbl.h: Regenerated.
Tom Tromey [Sat, 28 Oct 2023 17:46:33 +0000 (11:46 -0600)]
Remove some frame invalidation code
I stumbled across a few spots that mention that a function
"invalidates frame" and also assignments of NULL to a frame_info_ptr.
This code isn't harmful, but is also unnecessary since the
introduction of frame_info_ptr -- nowadays frame invalidations are
handled automatically.
Regression tested on x86-64 Fedora 38.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
GDB Administrator [Tue, 31 Oct 2023 00:00:22 +0000 (00:00 +0000)]
Automatic date update in version.in
Nick Clifton [Mon, 30 Oct 2023 15:18:15 +0000 (15:18 +0000)]
New Georgian translation for the ld sub-directory
Jose E. Marchesi [Mon, 30 Oct 2023 14:57:58 +0000 (15:57 +0100)]
gas: bpf: new test for MOV with C-like numbers ll suffix
The BPF pseudo-c syntax supports both MOV and LDDW instructions:
mov: r1 = EXPR
lddw: r1 = EXPR ll
Note that the white space between EXPR and `ll' is necessary in order
to avoid ambiguity with the assembler's support for C-like numerical
suffixes. This patch adds a new test to the GAS BPF testsuite to make
sure that instructions like:
r1 = 666ll
are interpreted as `mov %r1,666', not as `lddw %r1,666'.
This matches clang's assembler behavior.
2023-10-30 Jose E. Marchesi <jose.marchesi@oracle.com>
* testsuite/gas/bpf/alu-pseudoc.s: Add test to make sure C-like
suffix `ll' is not interpreted as lddw syntax.
* testsuite/gas/bpf/alu-pseudoc.d: Update expected results.
* testsuite/gas/bpf/alu-be-pseudoc.d: Likewise.
Tom Tromey [Wed, 20 Sep 2023 17:29:53 +0000 (11:29 -0600)]
Fix fixed-point "return" on ARM
On a big-endian ARM machine, the "return" command resulted in the
wrong value being returned when the function had a fixed-point return
type. This patch fixes the problem by unpacking and repacking the
fixed-point type appropriately.
Approved-By: Luis Machado <luis.machado@arm.com>
Tom Tromey [Wed, 20 Sep 2023 16:04:12 +0000 (10:04 -0600)]
Fix range-type "return" command on ARM
On big-endian ARM, "return"ing from a function that returned a range
type did not work. This patch strips the range type to treat the
function as though it were returning the underlying type instead.
Approved-By: Luis Machado <luis.machado@arm.com>
Tom Tromey [Wed, 20 Sep 2023 15:16:19 +0000 (09:16 -0600)]
Fix "finish" for vector types on ARM
On a big-endian ARM system, "finish" printed the wrong value when
finishing from a function that returned a vector type. Similarly,
calls to a function also resulted in the wrong value being passed. I
think both the read- and write-functions here should ignore the
endian-ness.
I tested this using the AdaCore internal test suite; the test case
that caught this is identical to gdb.base/gnu_vector.exp.
Approved-By: Luis Machado <luis.machado@arm.com>
Tom Tromey [Wed, 20 Sep 2023 13:50:58 +0000 (07:50 -0600)]
Fix "finish" with range types on ARM
On ARM (I tested big-endian but it may not matter), "finish" can
sometimes print the wrong result when the return type is a range type.
Range types should really be treated as their underlying type
(normally integer, but sometimes fixed-point). This patch implements
this.
Approved-By: Luis Machado <luis.machado@arm.com>
Tom Tromey [Wed, 20 Sep 2023 13:38:54 +0000 (07:38 -0600)]
Fix calls with small integers on ARM
On big-endian ARM, an inferior call with a small integer will pass the
wrong value. This patch fixes the problem. Because the code here
works using scalar values, and not just bytes, left-shifting is
unnecessary.
Approved-By: Luis Machado <luis.machado@arm.com>
Nick Clifton [Mon, 30 Oct 2023 12:17:53 +0000 (12:17 +0000)]
Accept and ignore the R_BPF_64_NODLYD32 relocation.
Victor Do Nascimento [Mon, 16 Oct 2023 09:44:46 +0000 (10:44 +0100)]
aarch64: Update aarch64-sys-regs.def header
Given the shared use of the aarch64-sys-regs.def file across Binutils
and GCC, add instructions for keeping the file synchronized across the
two codebases.
Namely, it should be made clear that all changes are first to be made
in Binutils and the updated file copied across to GCC.
opcodes/ChangeLog
* opcodes/aarch64-sys-regs.def: Update file-description header
comment.
GDB Administrator [Mon, 30 Oct 2023 00:00:18 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom Tromey [Sat, 14 Oct 2023 19:31:57 +0000 (13:31 -0600)]
Move read_addrmap_from_aranges to new file
In the interest of shrinking dwarf2/read.c a little more, this patch
moves the code that deciphers .debug_aranges into a new file.
Reviewed-By: Guinevere Larsen <blarsen@redhat.com>
Tom Tromey [Sat, 14 Oct 2023 18:31:31 +0000 (12:31 -0600)]
Pre-read .debug_aranges section
While working on background DWARF reading, I found a race case that I
tracked down to the handling of the .debug_aranges section. Currently
the section data is only read in after the CUs have all been created.
However, there's no real reason to do this -- it seems fine to read it
a little earlier, when all the other necessary sections are read in.
This patch makes this change, and updates the
read_addrmap_from_aranges API to assert that the section is read in.
This patch slightly changes the read_addrmap_from_aranges API as well,
to reject an empty section. This seems better to me than what the
current code does, which is try to read an empty section but then do
no work.
Regression tested on x86-64 Fedora 38.
Reviewed-By: Guinevere Larsen <blarsen@redhat.com>
GDB Administrator [Sun, 29 Oct 2023 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Lancelot Six [Tue, 12 Sep 2023 12:34:51 +0000 (12:34 +0000)]
gdb/gdbsupport/gdbserver: Require c++17
This patch proposes to require a C++17 compiler to build gdb /
gdbsupport / gdbserver. Before this patch, GDB required a C++11
compiler.
The general policy regarding bumping C++ language requirement in GDB (as
stated in [1]) is:
Our general policy is to wait until the oldest compiler that
supports C++NN is at least 3 years old.
Rationale: We want to ensure reasonably widespread compiler
availability, to lower barrier of entry to GDB contributions, and to
make it easy for users to easily build new GDB on currently
supported stable distributions themselves. 3 years should be
sufficient for latest stable releases of distributions to include a
compiler for the standard, and/or for new compilers to appear as
easily installable optional packages. Requiring everyone to build a
compiler first before building GDB, which would happen if we
required a too-new compiler, would cause too much inconvenience.
See the policy proposal and discussion
[here](https://sourceware.org/ml/gdb-patches/2016-10/msg00616.html).
The first GCC release which with full C++17 support is GCC-9[2],
released in 2019[3], which is over 4 years ago. Clang has had C++17
support since Clang-5[4] released in 2018[5].
A discussions with many distros showed that a C++17-able compiler is
always available, meaning that this no hard requirement preventing us to
require it going forward.
[1] https://sourceware.org/gdb/wiki/Internals%20GDB-C-Coding-Standards#When_is_GDB_going_to_start_requiring_C.2B-.2B-NN_.3F
[2] https://gcc.gnu.org/projects/cxx-status.html#cxx17
[3] https://gcc.gnu.org/gcc-9/
[4] https://clang.llvm.org/cxx_status.html
[5] https://releases.llvm.org/
Change-Id: Id596f5db17ea346e8a978668825787b3a9a443fd
Reviewed-By: Eli Zaretskii <eliz@gnu.org>
Approved-By: Tom Tromey <tom@tromey.com>
Approved-By: Pedro Alves <pedro@palves.net>
Lancelot Six [Tue, 12 Sep 2023 13:13:23 +0000 (13:13 +0000)]
gdb/ax_cxx_compile_stdcxx.m4: upgrade
This patch upgrades gdb/ax_cxx_compile_stdcxx.m4 to follow changes
available in [1] and regenerates the configure script.
[1] https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
Change-Id: I5b16adc65c9e48a13ad65202d58ab7a9d487214e
Approved-By: Tom Tromey <tom@tromey.com>
Approved-By: Pedro Alves <pedro@palves.net>
Jose E. Marchesi [Sat, 28 Oct 2023 04:48:42 +0000 (06:48 +0200)]
gas: tc-bpf.c: fix formatting of comment
Jose E. Marchesi [Sat, 28 Oct 2023 04:44:44 +0000 (06:44 +0200)]
opcodes: bpf-dis.c: fix typo in comment
GDB Administrator [Sat, 28 Oct 2023 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in
Simon Marchi [Fri, 27 Oct 2023 13:31:02 +0000 (09:31 -0400)]
gdb: trim trailing spaces in i386-tdep.{c,h}
Change-Id: I06c2e7c958c3451f00c70978538c1c2ad1b566df
Nelson Chu [Thu, 19 Oct 2023 08:09:06 +0000 (16:09 +0800)]
RISC-V: Clarify the behaviors of SET/ADD/SUB relocations.
We are used to generate these kinds of relocations by data directives.
Considering the following example,
.word (A + 3) - (B + 2)
The GAS will generate a pair of ADD/SUB for this,
R_RISCV_ADD, A + 1
R_RISCV_SUB, 0
The addend of R_RISCV_SUB will always be zero, and the summary of the
constants will be stored in the addend of R_RISCV_ADD/SET. Therefore,
we can always add the addend of these data relocations when doing relocations.
But unfortunately, I had heard that if we are using .reloc to generate
the data relocations will make the relocations failed. Refer to this,
.reloc offset, R_RISCV_ADD32, A + 3
.reloc offset, R_RISCV_SUB32, B + 2
.word 0
Then we can get the relocations as follows,
R_RISCV_ADD, A + 3
R_RISCV_SUB, B + 2
Then... Current LD does the relocation, B - A + 3 + 2, which is wrong
obviously...
So first of all, this patch fixes the wrong relocation behavior of
R_RISCV_SUB* relocations.
Afterwards, considering the uleb128 direcitve, we will get a pair of
SET_ULEB128/SUB_ULEB128 relocations for it for now,
.uleb128 (A + 3) - (B + 2)
R_RISCV_SET_ULEB128, A + 1
R_RISCV_SUB_ULEB128, B + 1
Which looks also wrong obviously, the summary of the constants should only
be stored into the addend of SET_ULEB128, and the addend of SUB_ULEB128 should
be zero like other SUB relocations. But the current LD will still get the right
relocation values since we only add the addend of SUB_ULEB128 by accident...
Anyway, this patch also fixes the behaviors above, to make sure that no matter
using .uleb128 or .reloc directives, we should always get the right values.
bfd/
* elfnn-riscv.c (perform_relocation): Clarify that SUB relocations
should substract the addend, rather than add.
(riscv_elf_relocate_section): Since SET_ULEB128 won't go into
perform_relocation, we should add it's addend here in advance.
gas/
* config/tc-riscv.c (riscv_insert_uleb128_fixes): Set the addend of
SUB_ULEB128 to zero since it should already be added into the addend
of SET_ULEB128.
GDB Administrator [Fri, 27 Oct 2023 00:00:08 +0000 (00:00 +0000)]
Automatic date update in version.in
Andrew Burgess [Wed, 18 Oct 2023 14:46:23 +0000 (15:46 +0100)]
gdb/python: Add new gdb.Value.bytes attribute
Add a gdb.Value.bytes attribute. This attribute contains the bytes of
the value (assuming the complete bytes of the value are available).
If the bytes of the gdb.Value are not available then accessing this
attribute raises an exception.
The bytes object returned from gdb.Value.bytes is cached within GDB so
that the same bytes object is returned each time. The bytes object is
created on-demand though to reduce unnecessary work.
For some values we can of course obtain the same information by
reading inferior memory based on gdb.Value.address and
gdb.Value.type.sizeof, however, not every value is in memory, so we
don't always have an address.
The gdb.Value.bytes attribute will convert any value to a bytes
object, so long as the contents are available. The value can be one
created purely in Python code, the value could be in a register,
or (of course) the value could be in memory.
The Value.bytes attribute can also be assigned too. Assigning to this
attribute is similar to calling Value.assign, the value of the
underlying value is updated within the inferior. The value assigned
to Value.bytes must be a buffer which contains exactly the correct
number of bytes (i.e. unlike value creation, we don't allow oversized
buffers).
To support this assignment like behaviour I've factored out the core
of valpy_assign. I've also updated convert_buffer_and_type_to_value
so that it can (for my use case) check the exact buffer length.
The restrictions for when the Value.bytes can or cannot be written too
are exactly the same as for Value.assign.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=13267
Reviewed-By: Eli Zaretskii <eliz@gnu.org>
Approved-By: Tom Tromey <tom@tromey.com>
Andrew Burgess [Mon, 17 Jul 2023 10:31:11 +0000 (11:31 +0100)]
gdb: handle main thread exiting during detach
Overview
========
Consider the following situation, GDB is in non-stop mode, the main
thread is running while a second thread is stopped. The user has the
second thread selected as the current thread and asks GDB to detach.
At the exact moment of detach the main thread exits.
This situation currently causes crashes, assertion failures, and
unexpected errors to be reported from GDB for both native and remote
targets.
This commit addresses this situation for native and remote targets.
There are a number of different fixes, but all are required in order
to get this functionality working correct for native and remote
targets.
Native Linux Target
===================
For the native Linux target, detaching is handled in the function
linux_nat_target::detach. In here we call stop_wait_callback for each
thread, and it is this callback that will spot that the main thread
has exited.
GDB then detaches from everything except the main thread by calling
detach_callback.
After this the first problem is this assert:
/* Only the initial process should be left right now. */
gdb_assert (num_lwps (pid) == 1);
The num_lwps call will return 0 as the main thread has exited and all
of the other threads have now been detached. I fix this by changing
the assert to allow for 0 or 1 lwps at this point. As the 0 case can
only happen in non-stop mode, the assert becomes:
gdb_assert (num_lwps (pid) == 1
|| (target_is_non_stop_p () && num_lwps (pid) == 0));
The next problem is that we do:
main_lwp = find_lwp_pid (ptid_t (pid));
and then proceed assuming that main_lwp is not nullptr. In the case
that the main thread has exited though, main_lwp will be nullptr.
However, we only need main_lwp so that GDB can detach from the
thread. If the main thread has exited, and GDB has already detached
from every other thread, then GDB has finished detaching, GDB can skip
the calls that try to detach from the main thread, and then tell the
user that the detach was a success.
For Remote Targets
==================
On remote targets there are two problems.
First is that when the exit occurs during the early phase of the
detach, we see the stop notification arrive while GDB is removing the
breakpoints ahead of the detach. The 'set debug remote on' trace
looks like this:
[remote] Sending packet: $z0,
7f1648fe0241,1#35
[remote] Notification received: Stop:W0;process:2a0ac8
# At this point an unpatched gdbserver segfaults, and the connection
# is broken. A patched gdbserver continues as below...
[remote] Packet received: E01
[remote] Sending packet: $z0,
7f1648ff00a8,1#68
[remote] Packet received: E01
[remote] Sending packet: $z0,
7f1648ff132f,1#6b
[remote] Packet received: E01
[remote] Sending packet: $D;2a0ac8#3e
[remote] Packet received: E01
I was originally running into Segmentation Faults, from within
gdbserver/mem-break.cc, in the function find_gdb_breakpoint. This
function calls current_process() and then dereferences the result to
find the breakpoint list.
However, in our case, the current process has already exited, and so
the current_process() call returns nullptr. At the point of failure,
the gdbserver backtrace looks like this:
#0 0x00000000004190e4 in find_gdb_breakpoint (z_type=48 '0', addr=
4198762, kind=1) at ../../src/gdbserver/mem-break.cc:982
#1 0x000000000041930d in delete_gdb_breakpoint (z_type=48 '0', addr=
4198762, kind=1) at ../../src/gdbserver/mem-break.cc:1093
#2 0x000000000042d8db in process_serial_event () at ../../src/gdbserver/server.cc:4372
#3 0x000000000042dcab in handle_serial_event (err=0, client_data=0x0) at ../../src/gdbserver/server.cc:4498
...
The problem is that, as a result non-stop being on, the process
exiting is only reported back to GDB after the request to remove a
breakpoint has been sent. Clearly gdbserver can't actually remove
this breakpoint -- the process has already exited -- so I think the
best solution is for gdbserver just to report an error, which is what
I've done.
The second problem I ran into was on the gdb side, as the process has
already exited, but GDB has not yet acknowledged the exit event, the
detach -- the 'D' packet in the above trace -- fails. This was being
reported to the user with a 'Can't detach process' error. As the test
actually calls detach from Python code, this error was then becoming a
Python exception.
Though clearly the detach has returned an error, and so, maybe, having
GDB throw an error would be fine, I think in this case, there's a good
argument that the remote error can be ignored -- if GDB tries to
detach and gets back an error, and if there's a pending exit event for
the pid we tried to detach, then just ignore the error and pretend the
detach worked fine.
We could possibly check for a pending exit event before sending the
detach packet, however, I believe that it might be possible (in
non-stop mode) for the stop notification to arrive after the detach is
sent, but before gdbserver has started processing the detach. In this
case we would still need to check for pending stop events after seeing
the detach fail, so I figure there's no point having two checks -- we
just send the detach request, and if it fails, check to see if the
process has already exited.
Testing
=======
In order to test this issue I needed to ensure that the exit event
arrives at the same time as the detach call. The window of
opportunity for getting the exit to arrive is so small I've never
managed to trigger this in real use -- I originally spotted this issue
while working on another patch, which did manage to trigger this
issue.
However, if we trigger both the exit and the detach from a single
Python function then we never return to GDB's event loop, as such GDB
never processes the exit event, and so the first time GDB gets a
chance to see the exit is during the detach call. And so that is the
approach I've taken for testing this patch.
Tested-By: Kevin Buettner <kevinb@redhat.com>
Approved-By: Kevin Buettner <kevinb@redhat.com>
Tom de Vries [Thu, 26 Oct 2023 08:34:24 +0000 (10:34 +0200)]
[gdb/testsuite] Add wait-for-index-cache in gdb.dwarf2/per-bfd-sharing.exp
If we make writing an index-cache entry very slow by doing this in
index_cache::store:
...
try
{
+ sleep (15);
index_cache_debug ("writing index cache for objfile %s",
bfd_get_filename (per_bfd->obfd));
...
we run into:
...
FAIL: gdb.dwarf2/per-bfd-sharing.exp: \
couldn't remove files in temporary cache dir
...
The FAIL happens because there is no index-cache entry in the cache dir.
The problem is that gdb is killed (by gdb_exit) before the index-cache entry
is written.
Fix this by using "maint wait-for-index-cache".
Tested on x86_64-linux.
PR testsuite/30528
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30528
Thiago Jung Bauermann [Thu, 26 Oct 2023 00:27:09 +0000 (21:27 -0300)]
gdb/nat/aarch64-scalable-linux-ptrace.h: Don't include itself
GCC doesn't complain, but it's still wrong.
GDB Administrator [Thu, 26 Oct 2023 00:00:29 +0000 (00:00 +0000)]
Automatic date update in version.in
Guinevere Larsen [Wed, 25 Oct 2023 08:44:19 +0000 (10:44 +0200)]
gdb/testsuite: add a clang XFAIL to gdb.python/py-watchpoint.exp
Clang doesn't use CFA information for variable locations. This makes it
so software breakpoints get a false hit when rbp gets popped, causing
a FAIL in gdb.python/py-watchpoint.exp. Since this is nothing wrong with
GDB itself, add an xfail to reduce noise.
Approved-By: Tom Tromey <tom@tromey.com>
Guinevere Larsen [Tue, 24 Oct 2023 15:44:43 +0000 (17:44 +0200)]
gdb/testsuite: fix running gdb.python/py-explore-cc with clang
The test gdb.python/py-explore-cc.exp was showing one unexpected
failure. This was due to how clang mapped instructions to lines,
resulting in the inferior seemingly stopping at a different location.
This patch adds a nop line in the relevant location so we don't need to
add XFAILs for existing clang releases, if this gets solved in future
versions.
Approved-By: Tom Tromey <tom@tromey.com>
Andrew Burgess [Wed, 4 Oct 2023 15:06:32 +0000 (16:06 +0100)]
gdbserver: don't leak program name in handle_v_run
I noticed that in handle_v_run (gdbserver/server.cc) we leak
new_program_name (a string) each time GDB starts an inferior, in the
case where GDB passes a program name to gdbserver.
This bug was introduced with this commit:
commit
7ab2607f97e5deaeae91018edf3ef5b4255a842c
Date: Wed Apr 13 17:31:02 2022 -0400
gdbsupport: make gdb_abspath return an std::string
When gdbserver receives a program name from GDB, this is first placed
into a malloc'd buffer within handle_v_run, and this buffer is then
used in this call:
program_path.set (new_program_name);
Prior to the above commit this call took ownership of the buffer
passed to it, but now this call uses the buffer to initialise a
std::string, which copies the buffer contents, leaving ownership with
the caller. So now, after this call (in handle_v_run)
new_program_name still owns a buffer.
At no point in handle_v_run do we free new_program_name, as a result
we are leaking the program name each time GDB starts a remote
inferior.
I could solve this by adding a 'free' call into handle_v_run, but I'd
rather automate the memory management.
So, to this end, I have added a new function in gdbserver/server.cc,
decode_v_run_arg. This function takes care of allocating the memory
buffer and decoding the vRun packet into the buffer, but returns a
gdb::unique_xmalloc_ptr<char> (or nullptr on error).
Back in handle_v_run I have converted new_program_name to also be a
gdb::unique_xmalloc_ptr<char>.
Now, after we call program_path.set(), the allocated buffer will be
automatically released when it is no longer needed.
It is worth highlighting that within the new decode_v_run_arg
function, I have wrapped the call to hex2bin in a try/catch block.
The hex2bin function can throw an exception if it encounters an
invalid (non-hex) character. Back in handle_v_run, we have a local
argument new_argv, which is of type std::vector<char *>. Each
'char *' in this vector is a malloc'd buffer. If we allow
hex2bin to throw an exception and don't catch it in either
decode_v_run_arg or handle_v_run then we are going to leak memory from
new_argv.
I chose to catch the exception in decode_v_run_arg, this seemed
cleanest, but I'm not sure it really matters, so long as the exception
is caught before we leave handle_v_run. I am working on a patch that
changes new_argv to automatically manage its memory, but that isn't
ready for posting yet. I think what I have here would be fine if my
follow on patch never arrives.
Additionally, within the handle_v_run loop I have changed an
assignment of nullptr to new_program_name into an assert. Previously,
the assignment could only trigger on the first iteration of the loop,
if we had no new program name to assign. However, new_program_name
always starts as nullptr, so, on the first loop iteration, if we have
nothing to assign to new_program_name, its value must already be
nullptr.
There should be no user visible changes after this commit.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
Simon Marchi [Mon, 23 Oct 2023 18:05:03 +0000 (14:05 -0400)]
gdb: make get_symbol_address a private method of symbol
get_symbol_address is only used symbol::value_address, make it a private
helper method.
Change-Id: I318ddcfcf1269d95045b8efe9137812df9c5113c
Approved-By: Tom Tromey <tom@tromey.com>
Simon Marchi [Mon, 23 Oct 2023 18:05:02 +0000 (14:05 -0400)]
gdb: make get_msymbol_address a private method of minimal_symbol
get_msymbol_address is only used in minimal_symbol::value_address. Make
it a private helper method.
Change-Id: I3f30e1b9d89ace6682fb08a7ebb91746db0ccf0f
Approved-By: Tom Tromey <tom@tromey.com>
Vladimir Mezentsev [Tue, 24 Oct 2023 02:55:01 +0000 (19:55 -0700)]
gprofng: Fix -Wformat= warnings
Added format attribute to several gprofng functions.
Fixed -Wformat= warnings.
gprofng/ChangeLog
2023-10-23 Vladimir Mezentsev <vladimir.mezentsev@oracle.com>
* libcollector/heaptrace.c: Fixed -Wformat= warnings.
* libcollector/hwprofile.c: Likewise.
* libcollector/iolib.c: Likewise.
* libcollector/iotrace.c: Likewise.
* libcollector/jprofile.c: Likewise.
* libcollector/profile.c: Likewise.
* libcollector/synctrace.c: Likewise.
* src/ClassFile.cc: Likewise.
* src/SourceFile.cc: Likewise.
* libcollector/libcol_util.h: Added format attribute.
* src/Emsg.h: Likewise.
* src/collector_module.h: Likewise.
* src/data_pckts.h: Define fld_sizeof.
Alan Modra [Tue, 24 Oct 2023 07:07:24 +0000 (17:37 +1030)]
asan: _bfd_elf_slurp_version_tables memory leak
Extends commit
6136093c0d00 to handle verdefs as well as verrefs.
PR 30886
* elf.c (_bfd_elf_slurp_version_tables): See free_contents for
verdefs too. Use free_contents rather than elf_tdata fields.
Alan Modra [Tue, 24 Oct 2023 04:52:00 +0000 (15:22 +1030)]
asan: out of memory in som_set_reloc_info
Sections without SEC_HAS_CONTENTS avoid the file size checks, and of
course it doesn't make sense to read such as the contents are all
zero.
* som.c (som_set_reloc_info): Don't read sections without contents.
Alan Modra [Tue, 24 Oct 2023 02:47:50 +0000 (13:17 +1030)]
asan: NULL deref in alpha_ecoff_get_relocated_section_contents
This fixes some holes found by fuzzers, and removes aborts that can be
triggered by user input to objdump. Abort should only be used within
bfd to show programming errors in bfd.
* coff-alpha.c (alpha_ecoff_get_relocated_section_contents): Handle
NULL howto. Don't abort on stack errors or on unexpected relocs.
Show more bfd reloc status messages.
GDB Administrator [Wed, 25 Oct 2023 00:00:25 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Tue, 24 Oct 2023 12:31:34 +0000 (14:31 +0200)]
[gdb/cli] Add gnu-source-highlight selftest
Add a selftest gnu-source-highlight:
...
$ gdb -q -batch -ex "maint selftest gnu-source-highlight"
Running selftest gnu-source-highlight.
Ran 1 unit tests, 0 failed
...
Tested on x86_64-linux.
Tom de Vries [Tue, 24 Oct 2023 10:35:08 +0000 (12:35 +0200)]
[readelf] Handle unknown name of main in .gdb_index section
When compiling hello world and adding a v9 .gdb-index section:
...
$ gcc -g hello.c
$ gdb-add-index a.out
...
readelf shows it as:
...
Shortcut table:
Language of main: unknown: 0
Name of main: ^A
...
The documentation of gdb says about the "Name of main" that:
...
This value must be ignored if the value for the language of main is zero.
...
Implement this approach in display_gdb_index, such that we have instead:
...
Shortcut table:
Language of main: unknown: 0
Name of main: <unknown>
...
Tested on x86_64-linux.
Approved-By: Jan Beulich <jbeulich@suse.com>
Lulu Cai [Wed, 11 Oct 2023 02:20:45 +0000 (10:20 +0800)]
as: fixed internal error when immediate value of relocation overflow.
The as and ld use _bfd_error_handler to output error messages when
checking relocation alignment and relocation overflow. However, the
abfd value passed by as to the function is NULL, resulting in an
internal error. The ld passes a non-null value to the function,
so it can output an error message normally.
GDB Administrator [Tue, 24 Oct 2023 00:00:35 +0000 (00:00 +0000)]
Automatic date update in version.in
Tom de Vries [Mon, 23 Oct 2023 16:25:12 +0000 (18:25 +0200)]
[gdb/python] Only include gdbsupport/selftest.h if GDB_SELF_TEST
I noticed that gdb/python/python.c unconditionally includes
gdbsupport/selftest.h.
Make this conditional on GDB_SELF_TEST.
Tested on x86_64-linux.
Jan Beulich [Mon, 23 Oct 2023 08:36:36 +0000 (10:36 +0200)]
gas: make .nops output visible in listing
Due to using a different frag type (in turn due to storing data
differently), making the resulting code appear in listings requires
special handling.
Jan Beulich [Mon, 23 Oct 2023 08:35:35 +0000 (10:35 +0200)]
x86: fold NOP testcase expectations where possible
Like done earlier for files needing adjustment anyway, also do this for
the remaining set.
Jan Beulich [Mon, 23 Oct 2023 08:35:11 +0000 (10:35 +0200)]
x86: fold a few of the "alternative" NOP patterns
Since named objects may not overlap, the compiler is not permitted to do
this for us, to avoid wasting space and cache bandwidth/capacity.
Jan Beulich [Mon, 23 Oct 2023 08:34:11 +0000 (10:34 +0200)]
x86: add a few more NOP patterns
First of all add f32_5[], allowing to eliminate the extra slot-is-NULL
code from i386_output_nops(). Plus then introduce f32_8[] and f16_5[]
following the same concept of adding a %cs segment override prefix.
Also re-use patterns when possible and correct comments as applicable.
Similarly re-use testcase expectations as much as possible, where they
need touching anyway.
Jan Beulich [Mon, 23 Oct 2023 08:33:25 +0000 (10:33 +0200)]
x86: don't record full i386_cpu_flags in struct i386_tc_frag_data
We only use a single bit of this ever growing structure.