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Reimplement tui_get_begin_asm_address

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tui_get_begin_asm_address looks for the inferior's "main" to display
it.  I think this is incorrect in two ways.

First, it should probably instead use the user's most recent source
context, if one has been set.

Second, it uses a hard-coded list of "main" names, but gdb already has
a better approach to handling this.

This patch fixes both of these problems.

gdb/ChangeLog
2019-12-20  Tom Tromey  <tom@tromey.com>

	* tui/tui-disasm.c (tui_get_begin_asm_address): Use
	get_current_source_symtab_and_line, and main_name.

Change-Id: I77dc13d49148e8dec5aa3eeb357ce3968a68d0bd
This commit is contained in:
Tom Tromey 2019-11-12 18:20:32 -07:00
parent 5d49bf1b69
commit 52469d7673
2 changed files with 21 additions and 13 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2019-12-20 Tom Tromey <tom@tromey.com>
* tui/tui-disasm.c (tui_get_begin_asm_address): Use
get_current_source_symtab_and_line, and main_name.
2019-12-20 Tom Tromey <tom@tromey.com>
* tui/tui.c (tui_show_source): Update.

29
gdb/tui/tui-disasm.c
View File

@ -258,25 +258,28 @@ tui_get_begin_asm_address (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
{
struct tui_locator_window *locator;
struct gdbarch *gdbarch = get_current_arch ();
CORE_ADDR addr;
CORE_ADDR addr = 0;
locator = tui_locator_win_info_ptr ();
if (locator->addr == 0)
{
struct bound_minimal_symbol main_symbol;
if (have_full_symbols () || have_partial_symbols ())
{
set_default_source_symtab_and_line ();
struct symtab_and_line sal = get_current_source_symtab_and_line ();
/* Find address of the start of program.
Note: this should be language specific. */
main_symbol = lookup_minimal_symbol ("main", NULL, NULL);
if (main_symbol.minsym == 0)
main_symbol = lookup_minimal_symbol ("MAIN", NULL, NULL);
if (main_symbol.minsym == 0)
main_symbol = lookup_minimal_symbol ("_start", NULL, NULL);
if (main_symbol.minsym)
addr = BMSYMBOL_VALUE_ADDRESS (main_symbol);
else
addr = 0;
if (sal.symtab != nullptr)
find_line_pc (sal.symtab, sal.line, &addr);
}
if (addr == 0)
{
struct bound_minimal_symbol main_symbol
= lookup_minimal_symbol (main_name (), nullptr, nullptr);
if (main_symbol.minsym != nullptr)
addr = BMSYMBOL_VALUE_ADDRESS (main_symbol);
}
}
else /* The target is executing. */
{