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Limit objdump -S context lines

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Showing context lines is confusing in many cases, an obvious example
being loops.

	* objdump.c (struct print_file_list): Add "max_printed".
	(try_print_file_open): Init new field.
	(show_line): Don't show 5 context lines when redisplaying source.
This commit is contained in:
Alan Modra 2016-06-24 10:50:25 +09:30
parent da4463c7d7
commit 43339b1d1c
2 changed files with 17 additions and 2 deletions

6
binutils/ChangeLog

@ -1,3 +1,9 @@
2016-06-24 Alan Modra <amodra@gmail.com>
* objdump.c (struct print_file_list): Add "max_printed".
(try_print_file_open): Init new field.
(show_line): Don't show 5 context lines when redisplaying source.
2016-06-22 Nick Clifton <nickc@redhat.com>
* testsuite/binutils-all/ar.exp: Skip tests for Alpha target.

13
binutils/objdump.c

@ -1135,6 +1135,7 @@ struct print_file_list
const char **linemap;
unsigned maxline;
unsigned last_line;
unsigned max_printed;
int first;
};
@ -1260,6 +1261,7 @@ try_print_file_open (const char *origname, const char *modname)
p->linemap = index_file (p->map, p->mapsize, &p->maxline);
p->last_line = 0;
p->max_printed = 0;
p->filename = origname;
p->modname = modname;
p->next = print_files;
@ -1447,10 +1449,17 @@ show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
if (l >= linenumber)
l = 1;
if (p->last_line >= l && p->last_line <= linenumber)
l = p->last_line + 1;
if (p->max_printed >= l)
{
if (p->max_printed < linenumber)
l = p->max_printed + 1;
else
l = linenumber;
}
}
dump_lines (p, l, linenumber);
if (p->max_printed < linenumber)
p->max_printed = linenumber;
p->last_line = linenumber;
p->first = 0;
}