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authorAlan Modra <amodra@gmail.com>2014-02-28 15:09:32 +1030
committerAlan Modra <amodra@gmail.com>2014-02-28 15:09:32 +1030
commit02fe846e43cb0190251a6fefbd322201b4bbe02d (patch)
treece11e048b90ceac366e51550fd63e90f8eb35ac2
parent9850436d9e423d66d67d27135896582b2725782e (diff)
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Incorrect .debug_line prologue header length for 64-bit DWARF
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.
-rw-r--r--gas/ChangeLog5
-rw-r--r--gas/dwarf2dbg.c8
2 files changed, 11 insertions, 2 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index 3469821..09dd757 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -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>
* config/tc-i386.c (cpu_arch): Add .prefetchwt1.
diff --git a/gas/dwarf2dbg.c b/gas/dwarf2dbg.c
index 6d6ee2d..ac6148f 100644
--- a/gas/dwarf2dbg.c
+++ b/gas/dwarf2dbg.c
@@ -1515,7 +1515,7 @@ static void
out_debug_line (segT line_seg)
{
expressionS exp;
- symbolS *prologue_end;
+ symbolS *prologue_start, *prologue_end;
symbolS *line_end;
struct line_seg *s;
int sizeof_offset;
@@ -1527,10 +1527,14 @@ out_debug_line (segT line_seg)
out_two (DWARF2_LINE_VERSION);
/* Length of the prologue following this length. */
+ prologue_start = symbol_temp_make ();
prologue_end = symbol_temp_make ();
+ exp.X_op = O_subtract;
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);
+ symbol_set_value_now (prologue_start);
/* Parameters of the state machine. */
out_byte (DWARF2_LINE_MIN_INSN_LENGTH);