Commit Graph

98580 Commits

Author SHA1 Message Date
Tom Tromey
d806ea2d0e Add Rust support to source highlighting
Currently, no release of GNU Source Highlight supports Rust.  However,
I've checked in a patch to do so there, and I plan to make a new
release sometime this summer.

This patch prepares gdb for that by adding support for Rust to the
source highlighting code.

Because Source Highlight will throw an exception if the language is
unrecognized, this also changes gdb to ignore exceptions here.  This
will cause gdb to fall back to un-highlighted source text.

This updates gdb's configure script to reject the combination of
Source Highlight and -static-libstdc++.  This is done because it's not
possible to use -static-libstdc++ and then catch exceptions from a
shared library.

Tested with the current and development versions of Source Highlight.

gdb/ChangeLog
2019-08-19  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.
	* configure.ac: Disallow the combination of -static-libstdc++ and
	source highlight.
	* source-cache.c (get_language_name): Handle rust.
	(source_cache::get_source_lines): Ignore highlighting exceptions.
2019-08-19 10:17:27 -06:00
Tom Tromey
c1a5d03a89 Add --with-static-standard-libraries to the top level
gdb should normally not be linked with -static-libstdc++.  Currently
this has not caused problems, but it's incompatible with catching an
exception thrown from a shared library -- and a subsequent patch
changes gdb to do just this.

This patch adds a new --with-static-standard-libraries flag to the
top-level configure.  It defaults to "auto", which means enabled if
gcc is being built, and disabled otherwise.

ChangeLog
2019-08-19  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.
	* configure.ac: Add --with-static-standard-libraries.
2019-08-19 10:17:11 -06:00
Tom Tromey
3eb185c97d Fix N^2 behavior in _bfd_dwarf2_find_symbol_bias
A customer reported a case where addr2line was very slow.  We tracked
this down to some N^2 behavior in _bfd_dwarf2_find_symbol_bias in the
unusual case where no function can be found.

This patch fixes the bug, and reduces the runtime for a particular
request from 127 seconds to 1 second.

bfd/ChangeLog
2019-08-19  Tom Tromey  <tromey@adacore.com>

	* dwarf2.c (_bfd_dwarf2_find_symbol_bias): Create hash table
	holding symbols.
2019-08-19 08:46:21 -06:00
Alan Modra
d292364e95 PR24898, An out-of-bounds read occured in display_data
Given 32-bit pointers and a 64-bit bfd_size_type, it is relatively
easy to construct a value of augmentation_data_len (eg. 0x100000000)
that won't fail pointer checks but will print without bounds.

	PR 24898
	* dwarf.c (display_debug_frames): Use the read_cie check and error
	for augmentation data length.
2019-08-19 20:38:59 +09:30
Alan Modra
903b777dde PowerPC64 ha/lo insn checks
These are done in ppc64_elf_edit_toc, which now also garbage collects
unused GOT entries.  The checks for legitimate instructions weren't
being done for the GOT relocs, unless the file also happened to have a
toc section.

	* elf64-ppc.c (struct ppc64_elf_obj_tdata): Rename has_gotrel
	to has_optrel.
	(struct _ppc64_elf_section_data): Likewise.
	(ppc64_elf_check_relocs): Set has_optrel for more relocs.
	(ppc64_elf_edit_toc): Do ha/lo insn checks in GOT loop rather
	than TOC loop.  Check PLT16 insns too.
2019-08-19 20:38:51 +09:30
Barnaby Wilks
72c03e30ae Float16: Fix test failures for non ELF targets
The tests were failing due to md_atof trying to do word-wise endian
switching on the float16 (for little-endian targets sometimes
multi word values have their word order changed).
However since a float16 is only 1 word wide, it would end up writing
incorrect data, as you cannot switch the word order of just one word.

	* config/tc-arm.c (md_atof): Add precision check.  Formatting.
2019-08-19 09:53:22 +09:30
GDB Administrator
2c115c4f3c Automatic date update in version.in 2019-08-19 00:00:34 +00:00
GDB Administrator
b271c8567a Automatic date update in version.in 2019-08-18 00:01:39 +00:00
Alan Modra
d367307b93 PR24911, Heap overflow issue in qsort_r, dwarf.c
The actual args to this function are "pointers to pointers to
debug_info".

	PR 24911
	* dwarf.c (comp_addr_base): Dereference args.
2019-08-17 18:06:31 +09:30
GDB Administrator
98ac8787e9 Automatic date update in version.in 2019-08-17 00:00:22 +00:00
Tom de Vries
34dafe9f39 [gdb/testsuite] Fix compare-sections.exp with -fPIE/-pie
When running gdb.base/compare-sections.exp with target board -fPIE/-pie, we
get:
...
FAIL: gdb.base/compare-sections.exp: after run to main: compare-sections -r
...

The test expects the read-only sections to have the same contents as in the
file:
...
    # Assume startup code doesn't change read-only sections.
    compare_sections "-r"
...
but that's not the case for PIE executables.

Fix this by allowing mismatched read-only sections for PIE executables.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-08-16  Tom de Vries  <tdevries@suse.de>

	* gdb.base/compare-sections.exp ("after run to main"): Allow
	mismatched read-only sections for PIE executables.
2019-08-16 23:48:28 +02:00
H.J. Lu
81e8046dc0 x86-64: Move PIC check for PC-relative relocations back
commit 83924b3846
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Feb 5 18:45:23 2019 -0800

    x86-64: Restore PIC check for PCREL reloc against protected symbol

moved PIC check for PC-relative relocations to elf_x86_64_check_relocs.
Since linker defined symbols may not be processed at the time, we need
to move the check back to elf_x86_64_relocate_section.

bfd/

	PR ld/24905
	* elf64-x86-64.c (elf_x86_64_check_relocs): Move PIC check for
	PC-relative relocations back to ...
	(elf_x86_64_relocate_section): Here.

ld/

	PR ld/24905
	* testsuite/ld-x86-64/pr24905-x32.d: New file.
	* testsuite/ld-x86-64/pr24905.d: Likewise.
	* testsuite/ld-x86-64/pr24905.s: Likewise.
	* testsuite/ld-x86-64/pr24905.t: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run pr24905 and pr24905-x32.
2019-08-16 14:25:58 -07:00
Tom Tromey
398fdd6086 Remove the TUI execution info window
The TUI execution info window is unusual in that it is always linked
to a source or disassembly window.  Even updates of its content are
handled by the source window, so it really has no life of its own.

This patch removes this window entirely and puts its functionality
directly into the source window.  This simplifies the code somewhat.

This is a user-visible change, because now the box around the source
(or disassembly) window encloses the execution info as well.  I
consider this an improvement as well, though.

Note that this patch caused ncurses to start emitting the "CSI Z"
sequence, so I've added this to the test suite terminal
implementation.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui.h (enum tui_win_type) <EXEC_INFO_WIN>: Remove.
	* tui/tui-winsource.h (struct tui_exec_info_window): Remove.
	(struct tui_source_window_base) <make_visible, refresh_window,
	resize>: Remove methods.
	<execution_info>: Remove field.
	* tui/tui-winsource.c (tui_source_window_base::do_erase_source_content)
	(tui_show_source_line, tui_source_window_base)
	(~tui_source_window_base): Update.
	(tui_source_window_base::resize)
	(tui_source_window_base::make_visible)
	(tui_source_window_base::refresh_window): Remove.
	(tui_source_window_base::update_exec_info): Update.
	* tui/tui-source.c (tui_source_window::set_contents): Update.
	* tui/tui-disasm.c (tui_disasm_window::set_contents): Update.

gdb/testsuite/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* lib/tuiterm.exp (_csi_Z): New proc.
	* gdb.tui/basic.exp: Update window positions.
	* gdb.tui/empty.exp: Update window positions.
2019-08-16 14:17:36 -06:00
Tom Tromey
e699d33164 Remove useless assignment from tui_remove_hooks
tui_remove_hooks clears deprecated_query_hook, but nothing in the TUI
ever sets it; so remove the assignment.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-hooks.c (tui_remove_hooks): Don't set
	deprecated_query_hook.
2019-08-16 11:28:34 -06:00
Tom Tromey
bb01dbfc04 Change tui_show_symtab_source to be a method
This changes tui_show_symtab_source to be a method on
tui_source_window.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.c (tui_update_source_windows_with_addr)
	(tui_update_source_windows_with_line): Update.
	* tui/tui-source.h (struct tui_source_window)
	<show_symtab_source>: Declare.
	(tui_show_symtab_source): Don't declare.
	* tui/tui-source.c (tui_show_symtab_source): Rename from
	tui_show_symtab_source.
2019-08-16 11:28:34 -06:00
Tom Tromey
81c82c4b90 Introduce tui_source_window_base::set_contents method
This introduces the tui_source_window_base::set_contents method and
implements it in the subclasses.  This removes a check of the window
type.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<set_contents>: Declare.
	* tui/tui-winsource.c
	(tui_source_window_base::update_source_window_as_is): Update.
	* tui/tui-source.h (struct tui_source_window) <set_contents>:
	Declare.
	(tui_set_source_content): Don't declare.
	* tui/tui-source.c (tui_source_window::set_contents): Rename from
	tui_set_source_content.
	* tui/tui-disasm.h (struct tui_disasm_window) <set_contents>:
	Declare.
	(tui_set_disassem_content): Don't declare.
	* tui/tui-disasm.c (tui_disasm_window::set_contents): Rename from
	tui_set_disassem_content.
2019-08-16 11:28:34 -06:00
Tom Tromey
2ddaf61443 Change tui_update_breakpoint_info to be a method
This changes tui_update_breakpoint_info to be a method on
tui_source_window_base.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<update_breakpoint_info>: Declare.
	(tui_update_breakpoint_info): Don't declare.
	* tui/tui-winsource.c (tui_source_window_base::update_source_window_as_is)
	(tui_update_all_breakpoint_info): Update.
	(tui_source_window_base::update_breakpoint_info): Rename from
	tui_update_breakpoint_info.
	(tui_source_window_base::update_exec_info): Update.
2019-08-16 11:28:34 -06:00
Tom Tromey
017f982820 Change tui_update_source_window to be a method
This changes tui_update_source_window to be a method on
tui_source_window_base.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<update_source_window>: Declare.
	(tui_update_source_window): Don't declare.
	* tui/tui-winsource.c
	(tui_source_window_base::update_source_window): Rename from
	tui_update_source_window.
	(tui_source_window_base::rerender): Update.
	* tui/tui-source.c (tui_source_window::maybe_update): Update.
	* tui/tui-disasm.c (tui_show_disassem)
	(tui_show_disassem_and_update_source)
	(tui_disasm_window::maybe_update): Update.
2019-08-16 11:28:34 -06:00
Tom Tromey
ed8358e949 Change tui_update_source_window_as_is to be a method
This changes tui_update_source_window_as_is to be a method on
tui_source_window_base.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<update_source_window_as_is>: Declare.
	(tui_update_source_window_as_is): Don't declare.
	* tui/tui-winsource.c (tui_update_source_window): Update
	(tui_source_window_base::update_source_window_as_is): Rename from
	tui_update_source_window_as_is.
	(tui_source_window_base::refill): Update.
	* tui/tui-source.c (tui_show_symtab_source): Update.
	* tui/tui-disasm.c (tui_disasm_window::do_scroll_vertical):
	Update.
2019-08-16 11:28:34 -06:00
Tom Tromey
20149b6b20 Remove "noerror" parameter from some TUI functions
A few TUI functions take a "noerror" parameter.  This is only checked
in one spot: in tui_set_source_content, if noerror is false, and if an
error occurs, then the function will call print_sys_errmsg.

This seems misguided to me, so this patch removes that code and this
parameter.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (tui_update_source_window)
	(tui_update_source_window_as_is): Remove "noerror" parameter.
	* tui/tui-winsource.c (tui_update_source_window)
	(tui_update_source_window_as_is): Remove "noerror" parameter.
	(tui_update_source_windows_with_addr)
	(tui_update_source_windows_with_line)
	(tui_source_window_base::rerender)
	(tui_source_window_base::refill): Update.
	* tui/tui-source.h (tui_set_source_content)
	(tui_show_symtab_source): Remove "noerror" parameter.
	* tui/tui-source.c (tui_set_source_content): Remove "noerror"
	parameter.
	(tui_show_symtab_source): Likewise.
	(tui_source_window::maybe_update): Update.
	* tui/tui-disasm.c (tui_show_disassem)
	(tui_show_disassem_and_update_source)
	(tui_disasm_window::do_scroll_vertical)
	(tui_disasm_window::maybe_update): Update.
2019-08-16 11:28:34 -06:00
Tom Tromey
2d83e710a1 Remove separate visibility flag
TUI windows keep track of their visibility in a boolean field.
However, this is not needed, because a window is visible if and only
if it has an underlying curses handle.  So, we can remove this
separate field.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui.c (tui_is_window_visible): Update.
	* tui/tui-wingeneral.c (tui_make_window)
	(tui_gen_win_info::make_visible, tui_refresh_all): Update.
	* tui/tui-win.c (window_name_completer, tui_refresh_all_win)
	(tui_set_focus_command, tui_all_windows_info, update_tab_width)
	(tui_set_win_height_command, parse_scrolling_args): Update.
	* tui/tui-source.c (tui_source_window::style_changed): Update.
	* tui/tui-regs.c (tui_show_registers)
	(tui_data_window::first_data_item_displayed)
	(tui_data_window::delete_data_content_windows)
	(tui_check_register_values, tui_reg_command): Update.
	* tui/tui-disasm.c (tui_show_disassem): Update.
	* tui/tui-data.h (struct tui_gen_win_info) <is_visible>: New
	method.
	<is_visible>: Remove field.
	* tui/tui-data.c (tui_next_win, tui_prev_win)
	(tui_delete_invisible_windows): Update.
2019-08-16 11:28:33 -06:00
Tom Tromey
d4ab829a24 Remove m_has_locator
The previous patch removed the only use of m_has_locator, so this
member can now be removed.

gdb/ChangeLog
2019-08-16  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<m_has_locator>: Remove.
	* tui/tui-layout.c (show_source_disasm_command, show_data)
	(show_source_or_disasm_and_command): Update.
2019-08-16 11:28:33 -06:00
Martin Liska
b4c555cfc4
Fix detection of missing plugin for LTO objects.
2019-08-16  Martin Liska  <mliska@suse.cz>

	PR ld/24912
	* elflink.c: Report error only for not relocatable.
	* linker.c (_bfd_generic_link_add_one_symbol): Do not handle
	here lto_slim_object as it's handled in caller.
2019-08-16  Martin Liska  <mliska@suse.cz>

	PR ld/24912
	* object.cc (big_endian>::do_layout): Do not report error,
	but only set a flag.
	(big_endian>::do_add_symbols): Report error only for when
	relocatable.
2019-08-16 13:14:36 +02:00
Alan Hayward
aa7ca1bb44 Move [PAC] into a new MI field addr_flags
Add a new print_pc which prints both the PC and a new field addr_flags.
Call this wherever the PC is printed in stack.c.

Add a new gdbarch method get_pc_address_flags to obtain the addr_flag
contents. By default returns an empty string, on AArch64 this returns
PAC if the address has been masked in the frame.

Document this in the manual and NEWS file.

gdb/ChangeLog:

	* NEWS (Other MI changes): New subsection.
	* aarch64-tdep.c (aarch64_get_pc_address_flags): New function.
	(aarch64_gdbarch_init): Add aarch64_get_pc_address_flags.
	* arch-utils.c (default_get_pc_address_flags): New function.
	* arch-utils.h (default_get_pc_address_flags): New declaration.
	* gdbarch.sh: Add get_pc_address_flags.
	* gdbarch.c: Regenerate.
	* gdbarch.h: Likewise.
	* stack.c (print_pc): New function.
	(print_frame_info) (print_frame): Call print_pc.

gdb/doc/ChangeLog:

	* gdb.texinfo (AArch64 Pointer Authentication)
	(GDB/MI Breakpoint Information) (Frame Information): Document
	addr_field.
2019-08-16 10:19:18 +01:00
Christophe Lyon
fdfc8cf7f0 [ld] [arm] Add support for noinit section
2019-08-16  Christophe Lyon  <christophe.lyon@linaro.org>

	* emulparams/armelf.sh (OTHER_SECTIONS): Add support for noinit
	section.

Change-Id: Ib293f28cc5f21e9e9a13abf4d4e37f0a0eec41c0
2019-08-16 08:28:52 +00:00
Alan Modra
0b8b76098f PR24909, Uninitialized use on stack in readelf
PR 24909
	PR 23499
	* readelf.c (get_symbol_version_string): Set sym_info earlier.
2019-08-16 15:17:23 +09:30
Alan Modra
7df6aecc97 PowerPC gcc bootstrap fail with bss-plt
git commit 3e04d7655b introduced a bug by sizing output sections
earlier in ppc_before_allocation.  That meant PLT (and GOT) sizes were
not included when calculating total executable section sizes.

	* emultempl/ppc32elf.em (ppc_before_allocation): Force running
	prelim_size_sections before deciding whether branch trampolines
	might be needed.
2019-08-16 13:38:11 +09:30
Alan Modra
63f6e94fb3 Aligned vs. unaligned ppc32 relocs
Given R_PPC_ADDR32 or R_PPC_UADDR32 relocs, this patch generates
R_PPC_ADDR32 or R_PPC_UADDR32 dynamic relocs from either type
depending on whether r_offset is 4-byte aligned, and similarly for
R_PPC_ADDR16/R_PPC_UADDR16.

	* elf32-ppc.c (ppc_elf_relocate_section): Optimize unaligned relocs.
2019-08-16 13:37:54 +09:30
Sandra Loosemore
d8f9e51c36 Fix paste-o in examine-backward.exp.
This patch fixes a paste-o that was introduced in commit
c8ad9b9a31.  Previously the regexp for
the "examine 3 bytes backward from ${address_zero}" test correctly
matched 3 "${byte}" patterns, but in that commit the 6-byte regexp
from the previous test was mistakenly repeated here instead.

2019-08-15  Sandra Loosemore  <sandra@codesourcery.com>

	gdb/testsuite/
	* gdb.base/examine-backward.exp: Correct regexp for
	"examine 3 bytes backward from ${address_zero}".
2019-08-15 18:15:16 -07:00
GDB Administrator
3339426357 Automatic date update in version.in 2019-08-16 00:00:20 +00:00
Tom de Vries
6eac171f06 [gdb] Make maint info sections print relocated addresses
When running gdb.base/compare-sections.exp with -fPIE/-pie, we get:
...
print /u *(unsigned char *) 0x00000238^M
Cannot access memory at address 0x238^M
(gdb) FAIL: gdb.base/compare-sections.exp: read-only: get value of read-only section
...

The problem is that that "maint info sections" prints an unrelocated address:
...
 [0]     0x00000238->0x00000254 at 0x00000238: .interp ALLOC LOAD READONLY \
                                                       DATA HAS_CONTENTS
...
while the test expects a relocated address.

Given that the documentation states that the command displays "the section
information displayed by info files", and that info files shows relocated
addresses:
...
        0x0000555555554238 - 0x0000555555554254 is .interp
...
fix this by showing relocated addresses for maint info sections as
well.

Build and tested on x86_64-linux.

gdb/ChangeLog:

2019-08-16  Tom de Vries  <tdevries@suse.de>

	* maint.c (maintenance_info_sections): Also handle !ALLOBJ case using
	print_objfile_section_info.
2019-08-16 00:25:14 +02:00
Tom Tromey
3df505f60e TUI resize unification
The TUI currently has two different ways to resize a window: the
resize method, and the methods make_invisible_and_set_new_height and
make_visible_with_new_height.

There's no deep reason to have two different ways to resize a window,
so this patch unifies them, leaving just the "resize" method.

This also changes the locator to be handled more like an ordinary
window and less like an adjunct of the associated source window.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-io.c (tui_puts_internal): Check TUI_CMD_WIN before
	calling update_cmdwin_start_line.
	* tui/tui-winsource.h (struct tui_source_window_base)
	<do_make_visible_with_new_height, set_new_height>: Don't declare.
	<rerender>: Declare.
	* tui/tui-winsource.c (tui_source_window_base::update_tab_width):
	Call rerender.
	(tui_source_window_base::set_new_height): Remove.
	(tui_source_window_base::rerender): Rename from
	do_make_visible_with_new_height.
	* tui/tui-win.c (tui_resize_all, tui_adjust_win_heights): Use
	resize method.
	(tui_win_info::make_invisible_and_set_new_height)
	(tui_win_info::make_visible_with_new_height): Remove.
	* tui/tui-stack.h (struct tui_locator_window) <rerender>:
	Declare.
	* tui/tui-stack.c (tui_locator_window::rerender): New method.
	* tui/tui-regs.h (struct tui_data_window) <set_new_height,
	do_make_visible_with_new_height>: Don't declare.
	<rerender>: Declare.
	* tui/tui-regs.c (tui_data_window::rerender): Rename from
	set_new_height.
	(tui_data_window::do_make_visible_with_new_height): Remove.
	* tui/tui-layout.c (show_source_disasm_command, show_data): Don't
	call tui_show_locator_content.
	(tui_gen_win_info::resize): Call rerender.
	(show_source_or_disasm_and_command): Don't call
	tui_show_locator_content.
	* tui/tui-data.h (struct tui_gen_win_info) <rerender>: New
	method.
	(struct tui_win_info) <rerender>: Declare.
	<set_new_height, make_invisible_and_set_new_height,
	make_visible_with_new_height>: Don't declare.
	* tui/tui-data.c (tui_win_list::rerender): New method.
	* tui/tui-command.h (struct tui_cmd_window)
	<do_make_visible_with_new_height>: Don't declare.
	* tui/tui-command.c
	(tui_cmd_window::do_make_visible_with_new_height): Remove.

gdb/testsuite/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* gdb.tui/empty.exp: Enable resizing tests.
2019-08-15 14:17:11 -06:00
Tom Tromey
272560b577 Fix bug with character enumeration literal
gnat encodes character enumeration literals using a few different
schemes.  The gnat compiler documented the "QU" and "QW" encodings,
but failed to document that a simpler encoding was used for certain
characters.

This patch updates gdb to handle this simple Q encoding.  Note that
wide character literals are still not handled.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tromey@adacore.com>

	* ada-exp.y (convert_char_literal): Handle "Q%c" encoding.
	* ada-lang.c (ada_enum_name): Likewise.

gdb/testsuite/ChangeLog
2019-08-15  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/char_enum.exp: Add regression tests.
	* gdb.ada/char_enum/foo.adb (Char_Enum_Type): Use '_'
	and '0'.
	(Char, Gchar): Update.
	* gdb.ada/char_enum/pck.ads (Global_Enum_Type): Use '+'.
2019-08-15 13:42:31 -06:00
Christian Biesinger
08235187bc Rename internal Python functions to start with an underscore
I could not tell if GdbSetPythonDirectory is internal or not because
I could not find any references to it, so I left it as-is.

Tested by running the testsuite on gdb.python/*.exp; everything still
passes.

2019-08-15  Christian Biesinger  <cbiesinger@google.com>

	* python/lib/gdb/__init__.py (GdbOutputFile): Rename to have a
	leading underscore.
	(GdbOutputErrorFile): Likewise.
	(global scope): Adjust constructor calls to GdbOutput{,Error}File
	accordingly.
	(execute_unwinders): Rename to have a leading underscore.
	(auto_load_packages): Likewise.
	(global scope): Adjust call to auto_load_packages accordingly.
	(GdbSetPythonDirectory): Likewise.
	* python/py-unwind.c (pyuw_sniffer): Call _execute_unwinders
	instead of execute_unwinders.

gdb/testsuite/ChangeLog:

2019-08-15  Christian Biesinger  <cbiesinger@google.com>

	* gdb.python/python.exp: Expect a leading underscore on
	GdbOutput{,Error}File.
2019-08-15 14:21:57 -05:00
Jim Wilson
080a488354 RISC-V: Fix lui relaxation issue with code at address 0.
This fixes a problem originally reported at
    https://github.com/riscv/riscv-binutils-gdb/issues/173

If you have code linked at address zero, you can have a lui instruction
loading a value 0x800 which gets relaxed to a c.lui which is valid (c.lui 0x1
followed by addi -0x800).  Relaxation can reduce the value below 0x800 at which
point the c.lui 0x0 is no longer valid.  We can fix this by converting the
c.lui to a c.li which can load 0.

	bfd/
	* elfnn-riscv.c (perform_relocation) <R_RISCV_RVC_LUI>: If
	RISCV_CONST_HIGH_PART (value) is zero, then convert c.lui instruction
	to c.li instruction, and use ENCODE_RVC_IMM to set value.

	ld/
	* testsuite/ld-riscv-elf/c-lui-2.d: New.
	* testsuite/ld-riscv-elf/c-lui-2.ld: New.
	* testsuite/ld-riscv-elf/c-lui-2.s: New.
	* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run the c-lui-2 test.
2019-08-15 12:01:13 -07:00
Tom Tromey
db502012fc TUI window resize should not need invisibility
When resizing a window, the TUI currently first makes it invisible,
then changes the size, and then restores its visibility.

I think this is done because curses doesn't truly support resizing a
window -- there is a "wresize" extension, but the man page says it
isn't available in all versions of curses.

First, this is probably not a major problem any more.  I imagine most
of those old systems are gone now.

Second, I think it's a better API to have this detail hidden inside of
the resize method.

This patch changes the code to follow this idea, and changes the
ordinary resize method to use wresize when it is available.  The
special case for the command window is also moved to methods on the
command window.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-layout.c (show_layout, show_source_disasm_command)
	(show_data): Don't change window visibility.
	(tui_gen_win_info::resize): Remove special case for command
	window.  Use wresize, when available.
	(show_source_or_disasm_and_command): Don't change window
	visibility.
	* tui/tui-command.h (struct tui_cmd_window) <resize>: Declare.
	<make_visible>: New method.
	* tui/tui-command.c (tui_cmd_window::resize): New method.
2019-08-15 12:29:28 -06:00
Tom Tromey
3891b65efe Change TUI source window iteration
Currently the TUI does separate bookkeeping to track which source
windows exist.  It seems better to me to just refer to the list of
windows for this, so this patch removes the special handling and
instead adds a new iterator.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_iterator): New.
	(struct tui_source_windows): New.
	* tui/tui-winsource.c (tui_display_main): Update.
	* tui/tui-win.c (tui_resize_all, tui_adjust_win_heights)
	(new_height_ok, parse_scrolling_args): Update.
	* tui/tui-layout.c (show_layout, show_data): Update.
	* tui/tui-data.h (tui_source_windows, tui_clear_source_windows)
	(tui_add_to_source_windows): Don't declare.
	* tui/tui-data.c (source_windows, tui_source_windows)
	(tui_clear_source_windows, tui_add_to_source_windows): Remove.
2019-08-15 12:29:28 -06:00
Tom Tromey
ee556432c4 Rename the "reset" method to "resize"
tui_gen_win_info::reset really just resizes the window.  This patch
renames it to reflect this.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base) <resize>:
	Rename from reset.
	* tui/tui-winsource.c (tui_source_window_base::resize): Rename.
	* tui/tui-layout.c (show_source_disasm_command, show_data):
	Update.
	(tui_gen_win_info::resize): Rename.
	(show_source_or_disasm_and_command): Update.
	* tui/tui-data.h (struct tui_gen_win_info) <resize>: Rename from
	reset.
2019-08-15 12:29:28 -06:00
Tom Tromey
46f438e3d5 Remove tui_initialize_static_data
tui_initialize_static_data is not needed, because locator moving and
resizing is already handled in the layout code.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-stack.c (tui_initialize_static_data): Remove.
	* tui/tui-interp.c (tui_interp::init): Don't call
	tui_initialize_static_data.
	* tui/tui-data.h (tui_initialize_static_data): Don't declare.
2019-08-15 12:29:28 -06:00
Tom Tromey
f4ce562c7f Minor simplification in tui_default_win_viewport_height
tui_default_win_viewport_height doesn't need to look at tui_win_list;
it can simply check the type directly.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-layout.c (tui_default_win_viewport_height): Don't
	examine tui_win_list.
2019-08-15 12:29:28 -06:00
Tom Tromey
c398c3d0b5 Remove tui_clear_source_content
tui_clear_source_content is not needed.  Instead, the callers can call
erase_source_content, which is also changed to clear the content
vector.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (tui_clear_source_content): Don't declare.
	* tui/tui-winsource.c (tui_update_source_window_as_is): Don't call
	tui_clear_source_content.
	(tui_clear_source_content): Remove.
	(tui_source_window_base::do_erase_source_content): Hoist call to
	content.clear().
	* tui/tui-stack.c (tui_show_frame_info): Don't call
	tui_clear_source_content.
2019-08-15 12:29:28 -06:00
Tom Tromey
e25d200487 Turn tui_erase_source_content into a method
This changes tui_erase_source_content into a method on
tui_source_window_base.  The bulk of the work is moved into a helper
method, so that the callers can each pass the string appropriate to
the particular window class.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<do_erase_source_content>: New method.
	<erase_source_content>: New method.
	(tui_erase_source_content): Don't declare.
	* tui/tui-winsource.c (tui_clear_source_content): Update.
	(tui_source_window_base::do_erase_source_content): Rename from
	tui_erase_source_content.
	(tui_source_window_base::show_source_content): Update.
	* tui/tui-win.c (tui_resize_all, tui_adjust_win_heights): Update.
	* tui/tui-source.h (struct tui_source_window)
	<erase_source_content>: New method.
	* tui/tui-disasm.h (struct tui_disasm_window)
	<erase_source_content>: New method.
2019-08-15 12:29:28 -06:00
Tom Tromey
002f15c277 Remove tui_alloc_source_buffer
There is no longer any need for tui_alloc_source_buffer.  The two
callers of this function immediately change the contents of the
window, undoing the work done by this function.

This required adding a move constructor to tui_source_element -- a
mildly surprising find, but without this, resizing the vector will
cause crashes.  This issue was masked earlier because
tui_alloc_source_buffer handled this.

Note that a patch for this bug was submitted here:

    https://sourceware.org/ml/gdb-patches/2019-08/msg00094.html

That patch is better, IMO, but the author as yet hasn't responded to a
request for a ChangeLog entry.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (tui_alloc_source_buffer): Don't declare.
	(struct tui_source_element): Add DISABLE_COPY_AND_ASSIGN, and move
	constructor.
	* tui/tui-winsource.c (tui_alloc_source_buffer): Remove.
	* tui/tui-source.c (tui_set_source_content): Update.
	* tui/tui-disasm.c (tui_set_disassem_content): Update.
2019-08-15 12:29:28 -06:00
Tom Tromey
c9033fe839 Change tui_line_is_displayed to be a method
This changes tui_line_is_displayed to be a method on
tui_source_window, now that it is obvious that it can only be called
for this type.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (tui_line_is_displayed): Don't declare.
	* tui/tui-winsource.c (tui_line_is_displayed): Move to
	tui-source.c.
	* tui/tui-source.h (struct tui_source_window) <line_is_displayed>:
	Declare.
	* tui/tui-source.c (tui_source_window::line_is_displayed): New
	method.
	(tui_source_window::maybe_update): Update.
2019-08-15 12:29:28 -06:00
Tom Tromey
088f37dd90 Change tui_addr_is_displayed into a method
This changes tui_addr_is_displayed to be a method on
tui_disasm_window, now that it is obvious that it can only be called
for this type.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (tui_addr_is_displayed): Don't declare.
	* tui/tui-winsource.c (tui_addr_is_displayed): Move to
	tui-disasm.c.
	* tui/tui-disasm.h (struct tui_disasm_window) <addr_is_displayed>:
	Declare.
	* tui/tui-disasm.c (tui_disasm_window::addr_is_displayed): New
	method.
	(tui_disasm_window::maybe_update): Update.
2019-08-15 12:29:28 -06:00
Tom Tromey
a54700c6c4 Move contents of tui_show_frame_info to new method
This moves much of the body of tui_show_frame_info to a new method on
tui_source_window_base.  This removes a check for the type of a
window.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.h (struct tui_source_window_base)
	<maybe_update>: Declare.
	* tui/tui-stack.c (tui_show_frame_info): Call maybe_update
	method.
	* tui/tui-source.h (struct tui_source_window) <maybe_update>:
	Declare.
	* tui/tui-source.c (tui_source_window::maybe_update): New method.
	* tui/tui-disasm.h (struct tui_disasm_window) <maybe_update>:
	Declare.
	* tui/tui-disasm.c (tui_disasm_window::maybe_update): New method.
2019-08-15 12:29:28 -06:00
Tom Tromey
e2a678a557 Avoid string_file in tui_make_status_line
tui_make_status_line uses string_file where a simple std::string
constructor would do.  This makes this change.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-stack.c (tui_make_status_line): Use string constructor.
2019-08-15 12:29:28 -06:00
Tom Tromey
f2dda47784 Move locator code to tui-stack.c
The locator is mostly implemented in tui-stack.c.  This moves the
remaining bits to tui-stack.c and tui-stack.h, as appropriate.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-wingeneral.c: Include tui-stack.h.
	* tui/tui-stack.h (MAX_LOCATOR_ELEMENT_LEN)
	(struct tui_locator_window): Move from tui-data.h.
	* tui/tui-stack.c (_locator, tui_locator_win_info_ptr)
	(tui_initialize_static_data): Move from tui-data.c.
	* tui/tui-data.h (MAX_LOCATOR_ELEMENT_LEN)
	(struct tui_locator_window): Move to tui-stack.c.
	* tui/tui-data.c (_locator, tui_locator_win_info_ptr)
	(tui_initialize_static_data): Move to tui-stack.c.
2019-08-15 12:29:28 -06:00
Tom Tromey
ed4a1084d7 Remove FIXMEs from tui-layout.c
An earlier patch added a couple of FIXME comments to tui-layout.c.
This removes them.  This is possible due to the previous patch that
changed how boxing works in the TUI -- now, no special case for the
command window is needed in box_win.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-layout.c (show_source_disasm_command)
	(show_source_or_disasm_and_command): Use make_visible method, not
	tui_make_window.
	* tui/tui-command.h (struct tui_cmd_window) <make_visible>:
	Remove.
2019-08-15 12:29:28 -06:00
Tom Tromey
65962b20b6 Simplify TUI boxing
In the TUI, whether or not a window can be boxed is a property of the
window's type.  This adds a can_box method to the window classes, and
changes tui_make_window to defer to this, removing the "box_it"
paramter.  This also lets us remove "enum tui_box", as it is no longer
used.

gdb/ChangeLog
2019-08-15  Tom Tromey  <tom@tromey.com>

	* tui/tui-wingeneral.h (tui_make_window): Update.
	* tui/tui-wingeneral.c (tui_make_window): Remove "box_it"
	parameter.
	(tui_gen_win_info::make_visible): Update.
	* tui/tui-regs.c (tui_data_window::display_registers_from):
	Update.
	* tui/tui-layout.c (show_source_disasm_command)
	(show_source_or_disasm_and_command): Update.
	* tui/tui-data.h (struct tui_gen_win_info) <can_box>: New method.
	(enum tui_box): Remove.
	(struct tui_win_info) <can_box>: New method.
	* tui/tui-command.h (struct tui_cmd_window) <can_box>: New
	method.
2019-08-15 12:29:28 -06:00