This patch removes cases from the testsuite that are not posssibly used. The
messages "Catch of * not yet implemented" were removed here:
https://www.sourceware.org/ml/gdb-patches/2004-01/msg00679.html
I changed the regexp at the same time to match the string more closely.
gdb/testsuite/ChangeLog:
* gdb.base/break.exp: Remove dead code.
* gdb.base/sepdebug.exp: Likewise.
This patch removes all special cases for HP-UX, for which support has
been removed earlier, that I found in the testsuite. Note that the hppa
architecture != HP-UX, since other OSes can run on hppa, so I tried to
leave everything that is not HP-UX specific.
Two complete tests were completely HP-UX specific, so I removed them.
I ran the testsuite on Linux x86-64, native and native-gdbserver, and
noticed no regressions.
gdb/testsuite/ChangeLog:
* gdb.asm/asm-source.exp: Remove HP-UX references.
* gdb.base/annota1.exp: Likewise.
* gdb.base/annota3.exp: Likewise.
* gdb.base/attach.exp: Likewise.
* gdb.base/bigcore.exp: Likewise.
* gdb.base/break.exp: Likewise.
* gdb.base/call-ar-st.exp: Likewise.
* gdb.base/callfuncs.exp: Likewise.
* gdb.base/catch-fork-static.exp: Likewise.
* gdb.base/display.exp: Likewise.
* gdb.base/foll-exec-mode.exp: Likewise.
* gdb.base/foll-exec.exp: Likewise.
* gdb.base/foll-fork.exp: Likewise.
* gdb.base/foll-vfork.exp: Likewise.
* gdb.base/funcargs.exp: Likewise.
* gdb.base/hbreak2.exp: Likewise.
* gdb.base/inferior-died.exp: Likewise.
* gdb.base/interrupt.exp: Likewise.
* gdb.base/multi-forks.exp: Likewise.
* gdb.base/nodebug.exp: Likewise.
* gdb.base/sepdebug.exp: Likewise.
* gdb.base/solib1.c: Likewise.
* gdb.base/step-test.exp: Likewise.
* gdb.mi/non-stop.c: Likewise.
* gdb.mi/pthreads.c: Likewise.
* gdb.multi/bkpt-multi-exec.ex: Likewise.
* gdb.threads/pthreads.c: Likewise.
* gdb.threads/staticthreads.exp: Likewise.
* lib/future.exp: Likewise.
* lib/gdb.exp: Likewise.
* gdb.base/so-indr-cl.c: Remove.
* gdb.base/so-indr-cl.exp: Likewise.
* gdb.base/solib.c: Likewise.
* gdb.base/solib.exp: Likewise.
* gdb.base/solib2.c: Likewise.
This patch is to get b37a6290 back again, which was removed by
d9311bfa by mistake.
gdb/gdbserver:
2015-12-21 Yao Qi <yao.qi@linaro.org>
* linux-aarch32-low.h [__aarch64__]: Use arm_abi_breakpoint
arm breakpoint.
PR gas/19386
* doc/as.texinfo (Strings): Prepend a space to index entries that
start with a backslash. This works around a problem in the pdf
generator.
2015-12-18 Sandra Loosemore <sandra@codesourcery.com>
gdb/
* event-top.c (command_handler): Don't require stdin to be a tty
for call to reinitialize_more_filter.
* top.c (command_loop): Likewise.
We only need to store 32-bit immediate in 64-bit and optimize 64-bit
displacement to 32-bit only for 64-bit BFD.
* config/tc-i386.c (optimize_imm): Store 32-bit immediate in
64-bit only for 64-bit BFD
(optimize_disp): Optimize 64-bit displacement to 32-bit only
for 64-bit BFD.
This patch fixes the cxx build broken by commit : d9311bfaf5.
Pushed as obvious.
gdb/ChangeLog:
* arm-tdep.c (arm_get_next_pcs_read_memory_unsigned_integer): Cast
to enum bfd_endian)
This patch adds some documentation to gdb_compile. It describes the
various options that can influence compilation. Most of them are
handled by DejaGnu, but are not really documented anywhere, so I think
it's good to have a quick reference. Not all possible options are
described, that would add way to much noise. I chose those that I think
are relevant in the context of writing a test case.
gdb/testsuite/ChangeLog:
* lib/gdb.exp (gdb_compile): Add function doc.
This patch enables support for conditional breakpoints if the target supports
software single step.
This was disabled before as the implementations of software single step were too
simple as discussed in
https://sourceware.org/ml/gdb-patches/2015-04/msg01110.html.
Since these issues are now fixed support can be added back.
New tests passing :
PASS: gdb.base/cond-eval-mode.exp: set breakpoint condition-evaluation
target and related...
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/gdbserver/ChangeLog:
* server.c (handle_query): Call target_supports_software_single_step.
This patch enables software single stepping if the targets support it,
to do while-stepping actions.
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/gdbserver/ChangeLog:
* linux-low.c (single_step): New function.
(linux_resume_one_lwp_throw): Call single_step.
(start_step_over): Likewise.
This patch teaches GDBServer how to software single step on ARM
linux by sharing code with GDB.
The arm_get_next_pcs function in GDB is now shared with GDBServer. So
that GDBServer can use the function to return the possible addresses of
the next PC.
A proper shared context was also needed so that we could share the code,
this context is described in the arm_get_next_pcs structure.
Testing :
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/ChangeLog:
* Makefile.in (ALL_TARGET_OBS): Append arm-get-next-pcs.o,
arm-linux.o.
(ALLDEPFILES): Append arm-get-next-pcs.c, arm-linux.c
(arm-linux.o): New rule.
(arm-get-next-pcs.o): New rule.
* arch/arm-get-next-pcs.c: New file.
* arch/arm-get-next-pcs.h: New file.
* arch/arm-linux.h: New file.
* arch/arm-linux.c: New file.
* arm.c: Include common-regcache.c.
(thumb_advance_itstate): Moved from arm-tdep.c.
(arm_instruction_changes_pc): Likewise.
(thumb_instruction_changes_pc): Likewise.
(thumb2_instruction_changes_pc): Likewise.
(shifted_reg_val): Likewise.
* arm.h (submask): Move macro from arm-tdep.h
(bit): Likewise.
(bits): Likewise.
(sbits): Likewise.
(BranchDest): Likewise.
(thumb_advance_itstate): Moved declaration from arm-tdep.h
(arm_instruction_changes_pc): Likewise.
(thumb_instruction_changes_pc): Likewise.
(thumb2_instruction_changes_pc): Likewise.
(shifted_reg_val): Likewise.
* arm-linux-tdep.c: Include arch/arm.h, arch/arm-get-next-pcs.h
arch/arm-linux.h.
(arm_linux_get_next_pcs_ops): New struct.
(ARM_SIGCONTEXT_R0, ARM_UCONTEXT_SIGCONTEXT,
ARM_OLD_RT_SIGFRAME_SIGINFO, ARM_OLD_RT_SIGFRAME_UCONTEXT,
ARM_NEW_RT_SIGFRAME_UCONTEXT, ARM_NEW_SIGFRAME_MAGIC): Move stack
layout defines to arch/arm-linux.h.
(arm_linux_sigreturn_next_pc_offset): Move to arch/arm-linux.c.
(arm_linux_software_single_step): Adjust for arm_get_next_pcs
implementation.
* arm-tdep.c: Include arch/arm-get-next-pcs.h.
(arm_get_next_pcs_ops): New struct.
(submask): Move macro to arm.h.
(bit): Likewise.
(bits): Likewise.
(sbits): Likewise.
(BranchDest): Likewise.
(thumb_instruction_changes_pc): Move to arm.c
(thumb2_instruction_changes_pc): Likewise.
(arm_instruction_changes_pc): Likewise.
(shifted_reg_val): Likewise.
(thumb_advance_itstate): Likewise.
(thumb_get_next_pc_raw): Move to arm-get-next-pcs.c.
(arm_get_next_pc_raw): Likewise.
(arm_get_next_pc): Likewise.
(thumb_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence): Likewise.
(arm_get_next_pcs_read_memory_unsigned_integer): New function.
(arm_get_next_pcs_addr_bits_remove): Likewise.
(arm_get_next_pcs_syscall_next_pc): Likewise.
(arm_get_next_pcs_is_thumb): Likewise.
(arm_software_single_step): Adjust for arm_get_next_pcs
implementation.
* arm-tdep.h: (arm_get_next_pc): Remove declaration.
(arm_get_next_pcs_read_memory_unsigned_integer):
New declaration.
(arm_get_next_pcs_addr_bits_remove): Likewise.
(arm_get_next_pcs_syscall_next_pc): Likewise.
(arm_get_next_pcs_is_thumb): Likewise.
(arm_deal_with_atomic_sequence: Remove declaration.
* common/gdb_vecs.h: Add CORE_ADDR vector definition.
* configure.tgt (aarch64*-*-linux): Add arm-get-next-pcs.o,
arm-linux.o.
(arm*-wince-pe): Add arm-get-next-pcs.o.
(arm*-*-linux*): Add arm-get-next-pcs.o, arm-linux.o,
arm-get-next-pcs.o
(arm*-*-netbsd*,arm*-*-knetbsd*-gnu): Add arm-get-next-pcs.o.
(arm*-*-openbsd*): Likewise.
(arm*-*-symbianelf*): Likewise.
(arm*-*-*): Likewise.
* symtab.h: Move CORE_ADDR vector definition to gdb_vecs.h.
gdb/gdbserver/ChangeLog:
* Makefile.in (SFILES): Append arch/arm-linux.c,
arch/arm-get-next-pcs.c.
(arm-linux.o): New rule.
(arm-get-next-pcs.o): New rule.
* configure.srv (arm*-*-linux*): Add arm-get-next-pcs.o,
arm-linux.o.
* linux-aarch32-low.c (arm_abi_breakpoint): Remove macro. Moved
to linux-aarch32-low.c.
(arm_eabi_breakpoint, arm_breakpoint): Likewise.
(arm_breakpoint_len, thumb_breakpoint): Likewise.
(thumb_breakpoint_len, thumb2_breakpoint): Likewise.
(thumb2_breakpoint_len): Likewise.
(arm_is_thumb_mode): Make non-static.
* linux-aarch32-low.h (arm_abi_breakpoint): New macro. Moved
from linux-aarch32-low.c.
(arm_eabi_breakpoint, arm_breakpoint): Likewise.
(arm_breakpoint_len, thumb_breakpoint): Likewise.
(thumb_breakpoint_len, thumb2_breakpoint): Likewise.
(thumb2_breakpoint_len): Likewise.
(arm_is_thumb_mode): New declaration.
* linux-arm-low.c: Include arch/arm-linux.h
aarch/arm-get-next-pcs.h, sys/syscall.h.
(get_next_pcs_ops): New struct.
(get_next_pcs_addr_bits_remove): New function.
(get_next_pcs_is_thumb): New function.
(get_next_pcs_read_memory_unsigned_integer): Likewise.
(arm_sigreturn_next_pc): Likewise.
(get_next_pcs_syscall_next_pc): Likewise.
(arm_gdbserver_get_next_pcs): Likewise.
(struct linux_target_ops) <arm_gdbserver_get_next_pcs>:
Initialize.
* linux-low.h: Move CORE_ADDR vector definition to gdb_vecs.h.
* server.h: Include gdb_vecs.h.
This patch is in preparation for software single step support on ARM in
GDBServer. It adds a new shared function regcache_raw_read_unsigned and
regcache_raw_get_unsigned so that GDB and GDBServer can use the same call
to fetch a raw register into an integer.
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/ChangeLog:
* Makefile.in (SFILES): Append common/common-regcache.c.
(COMMON_OBS): Append common/common-regcache.o.
(common-regcache.o): New rule.
* common/common-regcache.h (register_status) New enum.
(regcache_raw_read_unsigned): New declaration.
* common/common-regcache.c: New file.
* regcache.h (enum register_status): Move to common-regcache.h.
(regcache_raw_read_unsigned): Likewise.
(regcache_raw_get_unsigned): Likewise.
gdb/gdbserver/ChangeLog:
* Makefile.in (SFILES): Append common/common-regcache.c.
(OBS): Append common-regcache.o.
(common-regcache.o): New rule.
* regcache.c (init_register_cache): Initialize cache to
REG_UNAVAILABLE.
(regcache_raw_read_unsigned): New function.
* regcache.h (REG_UNAVAILABLE, REG_VALID): Replaced by shared
register_status enum.
This patch is in preparation for software single step support on ARM in
GDBServer. It refactors arm_*_software_single_step and sub-functions to
use regcache instead of frame to access registers so that the code can be
shared more easily between GDB and GDBServer.
Note also that since the intention is at some point to get rid of frame
completely in that function, memory reads have also been replaced by
read_memory_unsigned_integer rather than get_frame_memory_unsigned.
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/ChangeLog:
* arm-linux-tdep.c (arm_linux_sigreturn_next_pc_offset): New function.
(arm_linux_sigreturn_next_pc): Likewise.
(arm_linux_syscall_next_pc): Use regcache instead of frame.
(arm_linux_software_single_step): Likewise.
* arm-tdep.c (arm_is_thumb): New function.
(shifted_reg_va): Use regcache instead of frame.
(thumb_get_next_pc_raw): Likewise.
(arm_get_next_pc_raw): Likewise.
(arm_get_next_pc): Likewise.
(thumb_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence): Likewise.
(arm_software_single_step): Likewise.
* arm-tdep.h (struct gdbarch_tdep): Use regcache for syscall_next_pc.
(arm_get_next_pc): Use regcache.
(arm_deal_with_atomic_sequence): Likewise.
(arm_is_thumb): New declaration.
* regcache.c (regcache_raw_get_unsigned): New function.
* regcache.h (regcache_raw_get_unsigned): New function declaration.
This patch is in preparation for software single stepping support on ARM
it shares some functions and definitions that will be needed.
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
Not tested: wince/bsd build.
gdb/ChangeLog:
* arch/arm.c (bitcount): Move from arm-tdep.c.
(condition_true): Likewise.
* arch/arm.h (Instruction Definitions): Move form arm-tdep.h.
(condition_true): Move defenition from arm-tdep.h.
(bitcount): Likewise.
* arm-tdep.c (condition_true): Move to arch/arm.c.
(bitcount): Likewise.
* arm-tdep.h (Instruction Definitions): Move to arch/arm.h.
* arm-wince-tdep.c: Include arch/arm.h.
* armnbsd-tdep.c: Likewise.
This patch in preparation for software single step support on ARM. It refactors
breakpoint_reinsert_addr into get_next_pcs so that multiple location can be
returned.
When software single stepping there can be multiple possible next addresses
because we're stepping over a conditional branch instruction, for example.
The operation get_next_pcs handles that by returning a vector of all the
possible next addresses.
Software breakpoints are installed at each location returned.
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/gdbserver/ChangeLog:
* linux-aarch64-low.c (the_low_targets): Rename
breakpoint_reinsert_addr to get_next_pcs.
* linux-arm-low.c (the_low_targets): Likewise.
* linux-bfin-low.c (the_low_targets): Likewise.
* linux-cris-low.c (the_low_targets): Likewise.
* linux-crisv32-low.c (the_low_targets): Likewise.
* linux-low.c (can_software_single_step): Likewise.
(install_software_single_step_breakpoints): New function.
(start_step_over): Use install_software_single_step_breakpoints.
* linux-low.h: New CORE_ADDR vector.
(struct linux_target_ops) Rename breakpoint_reinsert_addr to
get_next_pcs.
* linux-mips-low.c (the_low_targets): Likewise.
* linux-nios2-low.c (the_low_targets): Likewise.
* linux-sparc-low.c (the_low_targets): Likewise.
gold/
PR gold/18780
* arm.cc (Target_arm::do_make_data_plt): Choose PLT generator based
on value of --long-plt flag.
(Output_data_plt_arm_standard::do_get_plt_entry_size): Moved to
Output_data_plt_arm_short.
(Output_data_plt_arm_standard::do_fill_plt_entry): Likewise.
(Output_data_plt_arm_standard::plt_entry): Likewise.
(Output_data_plt_arm_standard::do_fill_first_plt_entry): Fix
variable reference.
(Output_data_plt_arm_short): New class.
(Output_data_plt_arm_short::do_fill_plt_entry): Error out on too large
PLT offsets instead of asserting.
(Output_data_plt_arm_long): New class.
* options.h (General_options): Define --long-plt flag.
Note: this applies on top of:
[PATCH] Remove support for LinuxThreads and vendor 2.4 kernels w/ backported NPTL
https://sourceware.org/ml/gdb-patches/2015-12/msg00214.html
We try to avoid using libthread_db.so to list threads in the inferior
when debugging live processes, but the code that decides whether to
use it decides incorrectly if you have more than one inferior, and the
current inferior doesn't have execution yet. The result is visible
as:
(gdb) add-inferior
Added inferior 2
(gdb) inferior 2
[Switching to inferior 2 [<null>] (<noexec>)]
(gdb) info inferiors
Num Description Executable
1 process 15397 /home/pedro/gdb/tests/threads
* 2 <null>
(gdb) info threads
Cannot find new threads: generic error
(gdb)
Fix this by checking whether each inferior has execution rather than
just the current inferior.
By moving the core updating to linux-nat.c's update_thread_list
implementation, this also ends up fixing the
lwp-last-seen-running-on-core updating in the case we're debugging a
program that uses raw clone rather than pthreads, as linux-thread-db.c
isn't pushed in the target stack in that scenario.
Tested on x86_64 Fedora 20.
gdb/ChangeLog:
2015-12-17 Pedro Alves <palves@redhat.com>
PR threads/19354
* linux-nat.c (linux_nat_update_thread_list): Update process cores
each lwp was last seen running on here.
* linux-thread-db.c (update_thread_core): Delete.
(thread_db_update_thread_list_td_ta_thr_iter): Rename to ...
(thread_db_update_thread_list): ... this. Skip inferiors with
execution. Also call the target beneath.
(thread_db_update_thread_list): Delete.
gdb/testsuite/ChangeLog:
2015-12-17 Pedro Alves <palves@redhat.com>
PR threads/19354
* gdb.multi/info-threads.exp: New file.
Since we now rely on PTRACE_EVENT_CLONE being available (added in
Linux 2.5.46), we're relying on NPTL.
This commit removes the support for older LinuxThreads, as well as the
workarounds for vendor 2.4 kernels with NPTL backported.
- Rely on tkill being available.
- Assume gdb doesn't get cancel signals.
- Remove code that checks the LinuxThreads restart and cancel signals
in the inferior.
- Assume that __WALL is available.
- Assume that non-leader threads report WIFEXITED.
- Thus, no longer need to send signal 0 to check whether threads are
still alive.
- Update comments throughout.
Tested on x86_64 Fedora 20, native and gdbserver.
gdb/ChangeLog:
* configure.ac: Remove tkill checks.
* configure, config.in: Regenerate.
* linux-nat.c: Remove HAVE_TKILL_SYSCALL check. Update top level
comments.
(linux_nat_post_attach_wait): Remove 'cloned' parameter. Use
__WALL.
(attach_proc_task_lwp_callback): Don't set the cloned flag.
(linux_nat_attach): Adjust.
(kill_lwp): Remove HAVE_TKILL_SYSCALL check. No longer fall back
to 'kill'.
(linux_handle_extended_wait): Use __WALL. Don't set the cloned
flag.
(wait_lwp): Use __WALL. Update comments.
(running_callback, stop_and_resume_callback): Delete.
(linux_nat_filter_event): Don't stop and resume all lwps. Don't
check if the event LWP has previously exited.
(check_zombie_leaders): Update comments.
(linux_nat_wait_1): Use __WALL.
(kill_wait_callback): Don't handle clone processes separately.
Use __WALL instead.
(linux_thread_alive): Delete.
(linux_nat_thread_alive): Return true as long as the LWP is in the
LWP list.
(linux_nat_update_thread_list): Assume the kernel supports
PTRACE_EVENT_CLONE.
(get_signo): Delete.
(lin_thread_get_thread_signals): Remove LinuxThreads references.
No longer check __pthread_sig_restart / __pthread_sig_cancel in
the inferior.
* linux-nat.h (struct lwp_info) <cloned>: Delete field.
* linux-thread-db.c: Update comments.
(_initialize_thread_db): Remove LinuxThreads references.
* nat/linux-waitpid.c (my_waitpid): No longer emulate __WALL.
Pass down flags unmodified.
* linux-waitpid.h (my_waitpid): Update documentation.
gdb/gdbserver/ChangeLog:
* linux-low.c (linux_kill_one_lwp): Remove references to
LinuxThreads.
(kill_lwp): Remove HAVE_TKILL_SYSCALL check. No longer fall back
to 'kill'.
(linux_init_signals): Delete.
(initialize_low): Adjust.
* thread-db.c (thread_db_init): Remove LinuxThreads reference.
Hi,
AddressSanitizer reports an error like this,
(gdb) PASS: gdb.base/call-ar-st.exp: continue to tbreak9
print print_long_arg_list(a, b, c, d, e, f, *struct1, *struct2, *struct3, *struct4, *flags, *flags_combo, *three_char, *five_char, *int_char_combo, *d1, *d2, *d3, *f1, *f2, *f3)
=================================================================
==6236==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200008eb50 at pc 0x89e432 bp 0x7fffa3df9080 sp 0x7fffa3df9078
READ of size 5 at 0x60200008eb50 thread T0
#0 0x89e431 in memory_xfer_partial gdb/target.c:1264
#1 0x89e6c7 in target_xfer_partial gdb/target.c:1320
#2 0x89f267 in target_write_partial gdb/target.c:1595^M
#3 0x8a014b in target_write_with_progress gdb/target.c:1889^M
#4 0x8a0262 in target_write gdb/target.c:1914^M
#5 0x89ee59 in target_write_memory gdb/target.c:1492^M
#6 0x9a1c74 in write_memory gdb/corefile.c:393^M
#7 0x467ea5 in aarch64_push_dummy_call gdb/aarch64-tdep.c:1388
The problem is that an instance of stack_item_t is created to adjust
stack for alignment, the item.len is correct, but item.data is buf,
which is wrong, because item.len can be greater than the length of
buf. This patch sets item.data to NULL, and only update sp (no
inferior memory writes on stack for this item).
gdb:
2015-12-17 Yao Qi <yao.qi@linaro.org>
* aarch64-tdep.c (struct stack_item_t): Update comments.
(pass_on_stack): Set item.data to NULL.
(aarch64_push_dummy_call): Call write_memory if si->data
isn't NULL.
There is currently a problem in the way in which we produce
build attributes for simple assembler files that have armv8-a
instructions.
In these case we need to generate TAG_ISA_THUMB_Use to be Thumb-2
and set the architecture profile to be 'A' rather than not
setting architecture profile to be 'A' and setting TAG_ISA_THUMB_Use
to be Thumb-1.
This is a pre-requisite for any v8-m patches that have been posted.
arm-none-eabi gas testsuite run. no regressions.
2015-12-17 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
* gas/config/tc-arm.c (aeabi_set_public_attributes): Adjust
TAG_ARCH_profile for armv8-a.
* gas/testsuite/gas/arm/armv8a-automatic-hlt.d: New test.
* gas/testsuite/gas/arm/armv8a-automatic-hlt.s: New test.
* gas/testsuite/gas/arm/armv8a-automatic-lda.d: New test.
* gas/testsuite/gas/arm/armv8a-automatic-lda.s: New test.
2015-12-16 Mickael Guene <mickael.guene@st.com>
bfd/
* bfd-in2.h: Regenerate.
* reloc.c: Add new relocations.
* libbfd.h (bfd_reloc_code_real_names): Add new relocations
display names.
* elf32-arm.c (elf32_arm_howto_table_1): Add HOWTO for new
relocations.
(elf32_arm_reloc_map): Add bfd/arm mapping for new relocations.
(elf32_arm_final_link_relocate): Implement new relocations
resolution.
gas/
* doc/c-arm.texi: Add documentation about new directives
* config/tc-arm.c (group_reloc_table): Add mapping between gas
syntax and new relocations.
(do_t_add_sub): Keep new relocations for add operand.
(do_t_mov_cmp): Keep new relocations for mov operand.
(insns): Use 'shifter operand with possible group relocation'
operand parse code for movs operand.
(md_apply_fix): Implement mov and add encoding when new
relocations on them.
(tc_gen_reloc): Add new relocations.
(arm_fix_adjustable): Since offset has a limited range ([0:255])
we disable adjust_reloc_syms() for new relocations.
gas/testsuite/
* gas/arm/adds-thumb1-reloc-local.d: New
* gas/arm/adds-thumb1-reloc-local.s: New
* gas/arm/movs-thumb1-reloc-local.d: New
* gas/arm/movs-thumb1-reloc-local.s: New
include/
* elf/arm.h: Add new arm relocations.
ld/testsuite/
* ld-arm/arm-elf.exp (armelftests_common): Add new relocations
tests.
* ld-arm/thumb1-adds.d: New
* ld-arm/thumb1-adds.s: New
* ld-arm/thumb1-movs.d: New
* ld-arm/thumb1-movs.s: New
Ref: https://sourceware.org/ml/gdb/2015-12/msg00024.html
We have code in configure.ac that tries to detect whether the compiler
supports each warning and suppress it if not, but that doesn't work
with "-Wno-" options, because gcc doesn't error out for
-Wno-unknown-warning unless other diagnostics are being produced.
See https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html.
Handle this by checking whether -Wfoo works when we actually want
-Wno-foo.
gdb/ChangeLog:
2015-12-16 Pedro Alves <palves@redhat.com>
* configure.ac (compiler warning flags): When testing a
-Wno-foo option, check whether -Wfoo works instead.
* configure: Regenerate.
gdb/gdbserver/ChangeLog:
2015-12-16 Pedro Alves <palves@redhat.com>
* configure.ac (compiler warning flags): When testing a
-Wno-foo option, check whether -Wfoo works instead.
* configure: Regenerate.
Ref: https://sourceware.org/ml/gdb/2015-12/msg00014.html
Fixes the build in C++ mode with g++ 4.4:
gdb/btrace.h: In function ‘size_t VEC_btrace_insn_s_embedded_size(int)’:
gdb/btrace.h:84: error: invalid access to non-static data member ‘VEC_btrace_insn_s::vec’ of NULL object
gdb/btrace.h:84: error: (perhaps the ‘offsetof’ macro was used incorrectly)
gdb/btrace.h: In function ‘VEC_btrace_insn_s* VEC_btrace_insn_s_alloc(int)’:
gdb/btrace.h:84: error: invalid access to non-static data member ‘VEC_btrace_insn_s::vec’ of NULL object
gdb/btrace.h:84: error: (perhaps the ‘offsetof’ macro was used incorrectly)
gdb/btrace.h: In function ‘VEC_btrace_insn_s* VEC_btrace_insn_s_copy(VEC_btrace_insn_s*)’:
gdb/btrace.h:84: error: invalid access to non-static data member ‘VEC_btrace_insn_s::vec’ of NULL object
gdb/btrace.h:84: error: (perhaps the ‘offsetof’ macro was used incorrectly)
gdb/btrace.h: In function ‘VEC_btrace_insn_s* VEC_btrace_insn_s_merge(VEC_btrace_insn_s*, VEC_btrace_insn_s*)’:
gdb/btrace.h:84: error: invalid access to non-static data member ‘VEC_btrace_insn_s::vec’ of NULL object
gdb/btrace.h:84: error: (perhaps the ‘offsetof’ macro was used incorrectly)
gdb/btrace.h: In function ‘int VEC_btrace_insn_s_reserve(VEC_btrace_insn_s**, int, const char*, unsigned int)’:
gdb/btrace.h:84: error: invalid access to non-static data member ‘VEC_btrace_insn_s::vec’ of NULL object
gdb/btrace.h:84: error: (perhaps the ‘offsetof’ macro was used incorrectly)
gdb/ChangeLog:
2015-12-16 Pedro Alves <palves@redhat.com>
* common/vec.h (vec_offset): New macro.
(DEF_VEC_ALLOC_FUNC_I, DEF_VEC_ALLOC_FUNC_O): Use it instead of
offsetof.
To support thumb1 execute-only code we need to support four new
relocations (R_ARM_THM_ALU_ABS_G0_NC, R_ARM_THM_ALU_ABS_G1_NC,
R_ARM_THM_ALU_ABS_G2_NC and R_ARM_THM_ALU_ABS_G3_NC).
These relocations allow the static linker to finalize construction
of symbol address.
Typical sequence of code to get address of the symbol foo is then
the following :
movs r3, #:upper8_15:#foo
lsls r3, #8
adds r3, #:upper0_7:#foo
lsls r3, #8
adds r3, #:lower8_15:#foo
lsls r3, #8
adds r3, #:lower0_7:#foo
This will give following sequence of text and relocations after
assembly :
4: 2300 movs r3, #0
4: R_ARM_THM_ALU_ABS_G3_NC foo
6: 021b lsls r3, r3, #8
8: 3300 adds r3, #0
8: R_ARM_THM_ALU_ABS_G2_NC foo
a: 021b lsls r3, r3, #8
c: 3300 adds r3, #0
c: R_ARM_THM_ALU_ABS_G1_NC foo
e: 021b lsls r3, r3, #8
10: 3300 adds r3, #0
10: R_ARM_THM_ALU_ABS_G0_NC foo
ARMv8.1 includes CRC as a required extension but the +crc feature isn't
enabled by -march=armv8.1-a as it should be. This patch fixes that.
opcode/include
2015-12-15 Matthew Wahab <matthew.wahab@arm.com>
* arm.h (ARM_ARCH_V8_1A): Add the CRC_EXT_ARMV8 co-processor
feature macro.
(ARM_ARCH_V8_2A): Likewise.
Change-Id: Id1fe0e6fa51dede19d61e1fd08e68628ea1b1e9e
Some tests are skipped on aarch64 unexpectedly because arg0exp isn't
set. This patch is to set arg0exp to "$x0" for aarch64.
gdb/testsuite:
2015-12-15 Yao Qi <yao.qi@linaro.org>
* gdb.trace/ftrace.exp: Set arg0exp to "$x0" if target
is aarch64*-*-*.
The re-writing logic in _bfd_coff_final_link() overwrote the ".file"
part of the symbol table entry, due to not coping with the auxiliary
entry generated in all cases.
Note that while I would have wanted to add a test case,
(a) I didn't spot any one testing the base functionality here, and
(b) I wasn't able to figure out proper conditionals to use in e.g.
ld-elf/elf.exp to check for the necessary PE/PE+ support (which
varies by target).
Fix occurrences of left-shifting negative constants in C code.
sim/arm/ChangeLog:
* thumbemu.c (handle_T2_insn): Fix left shift of negative value.
* armemu.c (handle_v6_insn): Likewise.
sim/avr/ChangeLog:
* interp.c (sign_ext): Fix left shift of negative value.
sim/mips/ChangeLog:
* micromips.igen (process_isa_mode): Fix left shift of negative
value.
sim/msp430/ChangeLog:
* msp430-sim.c (get_op, put_op): Fix left shift of negative value.
sim/v850/ChangeLog:
* simops.c (v850_bins): Fix left shift of negative value.
* aarch64/simulator.c (system_get): New function. Provides read
access to the dczid system register.
(do_mrs): New function - implements the MRS instruction.
(dexSystem): Call do_mrs for the MRS instruction. Halt on
unimplemented system instructions.
Thomas Preud'homme
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