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Incorrect .debug_line prologue header length for 64-bit DWARF

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Don't be clever, calculate the length directly as the difference of
two symbols.

	* dwarf2dbg.c (out_debug_line): Correct .debug_line header_length
	field for 64-bit dwarf.
This commit is contained in:
Alan Modra 2014-02-28 15:09:32 +10:30
parent 9850436d9e
commit 02fe846e43
2 changed files with 11 additions and 2 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
2014-02-28 Alan Modra <amodra@gmail.com>
* dwarf2dbg.c (out_debug_line): Correct .debug_line header_length
field for 64-bit dwarf.
2014-02-21 Ilya Tocar <ilya.tocar@intel.com> 2014-02-21 Ilya Tocar <ilya.tocar@intel.com>
* config/tc-i386.c (cpu_arch): Add .prefetchwt1. * config/tc-i386.c (cpu_arch): Add .prefetchwt1.

8
gas/dwarf2dbg.c
View file

@ -1515,7 +1515,7 @@ static void
out_debug_line (segT line_seg) out_debug_line (segT line_seg)
{ {
expressionS exp; expressionS exp;
symbolS *prologue_end; symbolS *prologue_start, *prologue_end;
symbolS *line_end; symbolS *line_end;
struct line_seg *s; struct line_seg *s;
int sizeof_offset; int sizeof_offset;
@ -1527,10 +1527,14 @@ out_debug_line (segT line_seg)
out_two (DWARF2_LINE_VERSION); out_two (DWARF2_LINE_VERSION);
/* Length of the prologue following this length. */ /* Length of the prologue following this length. */
prologue_start = symbol_temp_make ();
prologue_end = symbol_temp_make (); prologue_end = symbol_temp_make ();
exp.X_op = O_subtract;
exp.X_add_symbol = prologue_end; exp.X_add_symbol = prologue_end;
exp.X_add_number = - (4 + 2 + 4); exp.X_op_symbol = prologue_start;
exp.X_add_number = 0;
emit_expr (&exp, sizeof_offset); emit_expr (&exp, sizeof_offset);
symbol_set_value_now (prologue_start);
/* Parameters of the state machine. */ /* Parameters of the state machine. */
out_byte (DWARF2_LINE_MIN_INSN_LENGTH); out_byte (DWARF2_LINE_MIN_INSN_LENGTH);