mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-10 09:42:26 +00:00
Fix .debug_line prologue header length calculation for 64-bit DWARF
The header_length field is the number of bytes following the field to the first byte of the line number program. The hard-coded constants previously here (4 + 2 + 4) were correct only for 32-bit DWARF. Sponsored by: DARPA, AFRL
This commit is contained in:
parent
e49341e87c
commit
1b182736a6
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=256692
@ -1271,6 +1271,7 @@ out_debug_line (segT line_seg)
|
||||
symbolS *line_end;
|
||||
struct line_seg *s;
|
||||
enum dwarf2_format d2f;
|
||||
int sizeof_initial_length;
|
||||
int sizeof_offset;
|
||||
|
||||
subseg_set (line_seg, 0);
|
||||
@ -1287,27 +1288,24 @@ out_debug_line (segT line_seg)
|
||||
d2f = DWARF2_FORMAT ();
|
||||
if (d2f == dwarf2_format_32bit)
|
||||
{
|
||||
expr.X_add_number = -4;
|
||||
emit_expr (&expr, 4);
|
||||
sizeof_offset = 4;
|
||||
sizeof_initial_length = sizeof_offset = 4;
|
||||
}
|
||||
else if (d2f == dwarf2_format_64bit)
|
||||
{
|
||||
expr.X_add_number = -12;
|
||||
out_four (-1);
|
||||
emit_expr (&expr, 8);
|
||||
sizeof_initial_length = 12;
|
||||
sizeof_offset = 8;
|
||||
out_four (-1);
|
||||
}
|
||||
else if (d2f == dwarf2_format_64bit_irix)
|
||||
{
|
||||
expr.X_add_number = -8;
|
||||
emit_expr (&expr, 8);
|
||||
sizeof_offset = 8;
|
||||
sizeof_initial_length = sizeof_offset = 8;
|
||||
}
|
||||
else
|
||||
{
|
||||
as_fatal (_("internal error: unknown dwarf2 format"));
|
||||
}
|
||||
expr.X_add_number = -sizeof_initial_length;
|
||||
emit_expr (&expr, sizeof_offset);
|
||||
|
||||
/* Version. */
|
||||
out_two (2);
|
||||
@ -1316,7 +1314,7 @@ out_debug_line (segT line_seg)
|
||||
expr.X_op = O_subtract;
|
||||
expr.X_add_symbol = prologue_end;
|
||||
expr.X_op_symbol = line_start;
|
||||
expr.X_add_number = - (4 + 2 + 4);
|
||||
expr.X_add_number = - (sizeof_initial_length + 2 + sizeof_offset);
|
||||
emit_expr (&expr, sizeof_offset);
|
||||
|
||||
/* Parameters of the state machine. */
|
||||
|
Loading…
Reference in New Issue
Block a user