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gdb/tui: Link source and assembler scrolling .... again

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Until recently when the source window was scrolled the assembler
window would scroll in sync - keeping the disassembly for the current
line in view.

This was broken in commit:

  commit b4b49dcbff6b437fa8b4e2fc0c3f27b457f11310
  Date:   Wed Nov 13 16:47:58 2019 -0700

      Don't call tui_show_source from tui_ui_out

This commit restores the synchronised scrolling and also maintains the
horizontal scroll within the source view when it is vertically
scrolled, something that was broken before.

This commit does not mean that scrolling the assembler view scrolls
the source view.  The connection this way never existed, though maybe
it should, but I'll leave adding this feature for a separate commit.

gdb/ChangeLog:

	* tui/tui-source.c (tui_source_window::do_scroll_vertical): Update
	all source windows, and maintain horizontal scroll status while
	doing so.

gdb/testsuite/ChangeLog:

	* gdb.tui/basic.exp: Add more scrolling tests.

Change-Id: I250114a3bc670040a6a759d41905776771b2f818
This commit is contained in:
Andrew Burgess
2020-01-07 11:39:17 +00:00
parent 9ae6bf640d
commit f5a7c406b1
4 changed files with 40 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2020-01-09 Andrew Burgess <andrew.burgess@embecosm.com>
* tui/tui-source.c (tui_source_window::do_scroll_vertical): Update
all source windows, and maintain horizontal scroll status while
doing so.
2020-01-09 Tom Tromey <tom@tromey.com>
PR tui/18932:

4
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2020-01-09 Andrew Burgess <andrew.burgess@embecosm.com>
* gdb.tui/basic.exp: Add more scrolling tests.
2020-01-09 Tom Tromey <tom@tromey.com>
PR tui/18932:

27
gdb/testsuite/gdb.tui/basic.exp
View File

@ -48,6 +48,33 @@ if {[Term::wait_for [string_to_regexp $line]] \
fail "scroll up"
}
# Check the horizontal scrolling. First confirm that 'main ()' is
# where we expect it to be. This relies on the current way we
# position source code on the screen, which might change in the
# future. The important part of this test is detecting the left/right
# scrolling, not which line main is actually on.
set line_num 6
set line [Term::get_line $line_num]
gdb_assert {[regexp -- "19\[\\t \]+main \\(\\)" $line]} \
"check main is where we expect on the screen"
set regexp "19\[\\t \]+ain \\(\\)"
# Send a right arrow.
send_gdb "\033\[C"
if {[Term::wait_for $regexp]} {
pass "scroll right"
} else {
fail "scroll right"
}
set line [Term::get_line $line_num]
# Send a down arrow.
send_gdb "\033\[B"
if {[Term::wait_for $regexp] \
&& [Term::get_line [expr {$line_num - 1}]] == $line} {
pass "scroll down"
} else {
fail "scroll down"
}
Term::check_box "source box" 0 0 80 15
Term::command "layout asm"

4
gdb/tui/tui-source.c
View File

@ -158,7 +158,9 @@ tui_source_window::do_scroll_vertical (int num_to_scroll)
line_no = 1;
cursal.line = line_no;
update_source_window (arch, cursal);
find_line_pc (cursal.symtab, cursal.line, &cursal.pc);
for (struct tui_source_window_base *win_info : tui_source_windows ())
win_info->update_source_window_as_is (arch, cursal);
}
}