Luis Machado <lgustavo@codesourcery.com>
* auxv.c: Include observer.h.
(auxv_inferior_data_cleanup): New.
(invalidate_auxv_cache_inf): New.
(invalidate_auxv_cache): New.
(get_auxv_inferior_data): New.
(auxv_inferior_data): New static global.
(auxv_info): New structure.
(target_auxv_search): Use get_auxv_inferior_data instead of
target_read_alloc and don't free cached buffers.
(fprint_target_auxv): Likewise
(_initialize_auxv): Register per-inferior auxv cache and register
observers to invalidate auxv cache when needed.
Kwok Cheung Yeung <kcy@codesourcery.com>
* NEWS: Document shorter fast tracepoints and qTMinFTPILen packet.
* i386-tdep.c (i386_fast_tracepoint_valid_at): Query target for
the minimum instruction size for fast tracepoints.
* target.h (struct target_ops): Add new method
to_get_min_fast_tracepoint_insn_len.
(target_get_min_fast_tracepoint_insn_len): New.
* target.c (update_current_target): Set up new target operation.
* remote.c (remote_write_bytes_aux): Fix typo.
(remote_get_min_fast_tracepoint_insn_len): New.
(init_remote_ops): Initialize new field.
* gdb.texinfo (Create and Delete Tracepoints): Describe what is
needed to get shorter fast tracepoints.
(Tracepoint Packets): Document new qTMinFTPILen packet.
* linux-x86-low.c (small_jump_insn): New.
(i386_install_fast_tracepoint_jump_pad): Add arguments for
trampoline and error message, build a trampoline and issue a small
jump instruction to it.
(x86_install_fast_tracepoint_jump_pad): Add arguments for
trampoline and error message.
(x86_get_min_fast_tracepoint_insn_len): New.
(the_low_target): Add call to x86_get_min_fast_tracepoint_insn_len.
* linux-low.h (struct linux_target_ops): Add arguments to
install_fast_tracepoint_jump_pad operation, add new operation.
* linux-low.c (linux_install_fast_tracepoint_jump_pad): Add
arguments.
(linux_get_min_fast_tracepoint_insn_len): New function.
(linux_target_op): Add new operation.
* tracepoint.c (gdb_trampoline_buffer): New IPA variable.
(gdb_trampoline_buffer_end): Ditto.
(gdb_trampoline_buffer_error): Ditto.
(struct ipa_sym_addresses): Add fields for new IPA variables.
(symbol_list): Add entries for new IPA variables.
(struct tracepoint): Add fields to hold the address range of the
trampoline used by the tracepoint.
(trampoline_buffer_head): New static variable.
(trampoline_buffer_tail): Ditto.
(claim_trampoline_space): New function.
(have_fast_tracepoint_trampoline_buffer): New function.
(clone_fast_tracepoint): Fill in trampoline fields of tracepoint
structure.
(install_fast_tracepoint): Ditto, also add error buffer argument.
(cmd_qtminftpilen): New function.
(handle_tracepoint_query): Add response to qTMinFTPILen packet.
(fast_tracepoint_from_trampoline_address): New function.
(fast_tracepoint_collecting): Handle trampoline as part of jump
pad space.
(set_trampoline_buffer_space): New function.
(initialize_tracepoint): Initialize new IPA variables.
* target.h (struct target_ops): Add arguments to
install_fast_tracepoint_jump_pad operation, add new
get_min_fast_tracepoint_insn_len operation.
(target_get_min_fast_tracepoint_insn_len): New.
(install_fast_tracepoint_jump_pad): Add arguments.
* server.h (IPA_BUFSIZ): Define.
* linux-i386-ipa.c: Include extra header files.
(initialize_fast_tracepoint_trampoline_buffer): New function.
(initialize_low_tracepoint): Call it.
* server.h (set_trampoline_buffer_space): Declare.
(claim_trampoline_space): Ditto.
(have_fast_tracepoint_trampoline_buffer): Ditto.
* gdb.trace/ftrace.c: New.
* gdb.trace/ftrace.exp: New.
of parameter from tracepoint to bp_location.
* target.c (update_current_target): Update.
* tracepoint.c (start_tracing): Update.
* remote.c (remote_download_tracepoint): Remove loop for each location
of a tracepoint.
* config/tc-mips.c (can_swap_branch_p): Exclude microMIPS
variant frags too.
gas/testsuite/
* gas/mips/relax-swap3.d: New test.
* gas/mips/mips16@relax-swap3.d: Likewise.
* gas/mips/micromips@relax-swap3.d: Likewise.
* gas/mips/relax-swap3.s: New test source.
* gas/mips/mips.exp: Run the new tests.
manual.
(Variables): Don't mention -gdwarf-2. Link to Compilation node.
(Macros): Add a footnote.
(C): Remove paragraph about compiler options.
(C Constants): Mention wide character and string constants.
(C Plus Plus Expressions): Update compiler option advice. Mention
using declarations. Mention ADL. Remove old HP compiler
information.
The read_frame_register_value function as it was implemented introduced
a regression on big-endian targets. The problem appears when trying to
get the value of an entity stored inside a register, and when the size
of the entity is smaller than the size of the register. In that case,
we were always reading the first N bytes of the register, which is wrong
for big-endian architectures, where we need to read the last N bytes of
the register.
gdb/ChangeLog:
* findvar.c (read_frame_register_value): Read correct bytes from
register on big-endian architectures.
gdb/testsuite/ChangeLog:
* gdb.ada/small_reg_param: New testcase.
When opening the procfs map file, we create a cleanup routine to make
sure that the associated file descriptor gets closed, but we never
call the cleanup. So the FD gets leaked.
gdb/ChangeLog:
* procfs.c (iterate_over_mappings): Call do_cleanups before
returning.
