Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

LVU: add support to force view resets

Browse Source
This commit is contained in:
Alexandre Oliva
2017-05-18 17:02:39 -03:00
parent 5b5e6e3f9a
commit 569d4546f1
1 changed files with 32 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
gas/dwarf2dbg.c
View File

@@ -223,6 +223,10 @@ static struct dwarf2_line_info current = {
0, NULL
};
/* This symbol is used to recognize view number forced resets in loc
lists. */
static symbolS *force_reset_view;
/* The size of an address on the target. */
static unsigned int sizeof_address;
@@ -320,7 +324,7 @@ set_or_check_view (struct line_entry *e, struct line_entry *p,
/* First, compute !(E->label > P->label), to tell whether or not
we're to reset the view number. If we can't resolve it to a
constant, keep it symbolic. */
if (!p)
if (!p || e->loc.view == force_reset_view)
{
viewx.X_op = O_constant;
viewx.X_add_number = 0;
@@ -876,19 +880,31 @@ dwarf2_directive_loc (int dummy ATTRIBUTE_UNUSED)
(void) restore_line_pointer (c);
symbolS *sym;
SKIP_WHITESPACE ();
if (ISDIGIT (*input_line_pointer))
if (ISDIGIT (*input_line_pointer)
|| *input_line_pointer == '-')
{
bfd_boolean force_reset = *input_line_pointer == '-';
value = get_absolute_expression ();
if (value != 0)
{
as_bad (_("numeric view can only be asserted to zero"));
return;
}
sym = symbol_temp_new (absolute_section, value, &zero_address_frag);
if (force_reset && force_reset_view)
sym = force_reset_view;
else
{
sym = symbol_temp_new (absolute_section, value,
&zero_address_frag);
if (force_reset)
force_reset_view = sym;
}
}
else
{
char *name = read_symbol_name ();
if (!name)
return;
sym = symbol_find_or_make (name);
if (S_IS_DEFINED (sym))
{
@@ -1544,7 +1560,19 @@ process_entries (segT seg, struct line_entry *e)
frag = symbol_get_frag (lab);
frag_ofs = S_GET_VALUE (lab);
if (last_frag == NULL)
if (last_frag == NULL
|| (e->loc.view == force_reset_view
/* If we're to reset the view, but we know we're
advancing PC, we don't have to force with
set_address. We know we do when we're at the same
address of the same frag, and we know we might when
we're in the beginning of a frag, and we were at the
end of the previous frag. */
&& (frag == last_frag
? (last_frag_ofs == frag_ofs)
: (frag_ofs > 0
|| ((offsetT)last_frag_ofs
>= get_frag_fix (last_frag, seg))))))
{
out_set_addr (lab);
out_inc_line_addr (line_delta, 0);