* dwarf2dbg.c (struct line_entry): Replace frag and frag_ofs

        with label.
        (dwarf2_loc_mark_labels): New.
        (dwarf2_gen_line_info_1): Split out of ...
        (dwarf2_gen_line_info): ... here.  Create the temp symbol here.
        (dwarf2_emit_label): New.
        (dwarf2_directive_loc_mark_labels): New.
        (out_set_addr): Take a symbol instead of frag+ofs.
        (relax_inc_line_addr): Likewise.
        (emit_inc_line_addr): Assert delta non-negative.
        (process_entries): Remove dead code.  Update to work with temp
        symbols instead of frag+ofs.
        * dwarf2dbg.h (dwarf2_directive_loc_mark_labels): Declare.
        (dwarf2_emit_label, dwarf2_loc_mark_labels): Declare.
        * config/obj-elf.c (elf_pseudo_tab): Add loc_mark_labels.
        * config/obj-elf.h (obj_frob_label): New.
        * config/tc-alpha.c (alpha_define_label): Call dwarf2_emit_label.
        * config/tc-arm.c, config/tc-hppa.c, config/tc-m68k.c,
        config/tc-mips.c, config/tc-ppc.c, config/tc-sh.c, config/tc-xtensa.c:
        Similarly in the respective tc_frob_label implementation functions.
        * config/tc-i386.c (md_pseudo_table): Move file and loc to
        non-elf section; add loc_mark_labels.
        * config/tc-ia64.c (struct label_fix): Add dw2_mark_labels.
        (ia64_flush_insns): Check for marked labels; emit line entry if so.
        (emit_one_bundle): Similarly.
        (ia64_frob_label): Record marked labels.
        * config/tc-m68hc11.h (tc_frob_label): Remove.
        * config/tc-ms1.c (md_pseudo_table): Remove file and loc.
        * config/tc-sh.h (tc_frob_label): Pass sym to sh_frob_label.
        * config/tc-sh64.h (tc_frob_label): Likewise.
        * doc/as.texinfo (LNS directives): Docuement .loc_mark_blocks.

1 files changed, 37 insertions, 21 deletions

diff --git a/gas/config/tc-ia64.c b/gas/config/tc-ia64.c
index 81e5cd5..5875551 100644
--- a/gas/config/tc-ia64.c
+++ b/gas/config/tc-ia64.c
@@ -159,6 +159,7 @@ struct label_fix
 {
   struct label_fix *next;
   struct symbol *sym;
+  bfd_boolean dw2_mark_labels;
 };
 
 /* This is the endianness of the current section.  */
@@ -1083,6 +1084,7 @@ ia64_flush_insns ()
   segT saved_seg;
   subsegT saved_subseg;
   unw_rec_list *ptr;
+  bfd_boolean mark;
 
   if (!md.last_text_seg)
     return;
@@ -1096,18 +1098,23 @@ ia64_flush_insns ()
     emit_one_bundle ();		/* force out queued instructions */
 
   /* In case there are labels following the last instruction, resolve
-     those now:  */
+     those now.  */
+  mark = FALSE;
   for (lfix = CURR_SLOT.label_fixups; lfix; lfix = lfix->next)
     {
-      S_SET_VALUE (lfix->sym, frag_now_fix ());
-      symbol_set_frag (lfix->sym, frag_now);
+      symbol_set_value_now (lfix->sym);
+      mark |= lfix->dw2_mark_labels;
     }
-  CURR_SLOT.label_fixups = 0;
-  for (lfix = CURR_SLOT.tag_fixups; lfix; lfix = lfix->next)
+  if (mark)
     {
-      S_SET_VALUE (lfix->sym, frag_now_fix ());
-      symbol_set_frag (lfix->sym, frag_now);
+      dwarf2_where (&CURR_SLOT.debug_line);
+      CURR_SLOT.debug_line.flags |= DWARF2_FLAG_BASIC_BLOCK;
+      dwarf2_gen_line_info (frag_now_fix (), &CURR_SLOT.debug_line);
     }
+  CURR_SLOT.label_fixups = 0;
+
+  for (lfix = CURR_SLOT.tag_fixups; lfix; lfix = lfix->next)
+    symbol_set_value_now (lfix->sym);
   CURR_SLOT.tag_fixups = 0;
 
   /* In case there are unwind directives following the last instruction,
@@ -6647,6 +6654,7 @@ emit_one_bundle ()
   int n, i, j, first, curr, last_slot;
   bfd_vma t0 = 0, t1 = 0;
   struct label_fix *lfix;
+  bfd_boolean mark_label;
   struct insn_fix *ifix;
   char mnemonic[16];
   fixS *fix;
@@ -6967,11 +6975,30 @@ emit_one_bundle ()
       if (insn_unit != required_unit)
 	continue;		/* Try next slot.  */
 
-      if (debug_type == DEBUG_DWARF2 || md.slot[curr].loc_directive_seen)
+      /* Now is a good time to fix up the labels for this insn.  */
+      mark_label = FALSE;
+      for (lfix = md.slot[curr].label_fixups; lfix; lfix = lfix->next)
+	{
+	  S_SET_VALUE (lfix->sym, frag_now_fix () - 16);
+	  symbol_set_frag (lfix->sym, frag_now);
+	  mark_label |= lfix->dw2_mark_labels;
+	}
+      for (lfix = md.slot[curr].tag_fixups; lfix; lfix = lfix->next)
+	{
+	  S_SET_VALUE (lfix->sym, frag_now_fix () - 16 + i);
+	  symbol_set_frag (lfix->sym, frag_now);
+	}
+
+      if (debug_type == DEBUG_DWARF2
+	  || md.slot[curr].loc_directive_seen
+	  || mark_label)
 	{
 	  bfd_vma addr = frag_now->fr_address + frag_now_fix () - 16 + i;
 
 	  md.slot[curr].loc_directive_seen = 0;
+	  if (mark_label)
+	    md.slot[curr].debug_line.flags |= DWARF2_FLAG_BASIC_BLOCK;
+
 	  dwarf2_gen_line_info (addr, &md.slot[curr].debug_line);
 	}
 
@@ -7000,19 +7027,6 @@ emit_one_bundle ()
       --md.num_slots_in_use;
       last_slot = i;
 
-      /* now is a good time to fix up the labels for this insn:  */
-      for (lfix = md.slot[curr].label_fixups; lfix; lfix = lfix->next)
-	{
-	  S_SET_VALUE (lfix->sym, frag_now_fix () - 16);
-	  symbol_set_frag (lfix->sym, frag_now);
-	}
-      /* and fix up the tags also.  */
-      for (lfix = md.slot[curr].tag_fixups; lfix; lfix = lfix->next)
-	{
-	  S_SET_VALUE (lfix->sym, frag_now_fix () - 16 + i);
-	  symbol_set_frag (lfix->sym, frag_now);
-	}
-
       for (j = 0; j < md.slot[curr].num_fixups; ++j)
 	{
 	  ifix = md.slot[curr].fixup + j;
@@ -7904,6 +7918,7 @@ ia64_frob_label (sym)
       fix = obstack_alloc (&notes, sizeof (*fix));
       fix->sym = sym;
       fix->next = CURR_SLOT.tag_fixups;
+      fix->dw2_mark_labels = FALSE;
       CURR_SLOT.tag_fixups = fix;
 
       return;
@@ -7915,6 +7930,7 @@ ia64_frob_label (sym)
       fix = obstack_alloc (&notes, sizeof (*fix));
       fix->sym = sym;
       fix->next = CURR_SLOT.label_fixups;
+      fix->dw2_mark_labels = dwarf2_loc_mark_labels;
       CURR_SLOT.label_fixups = fix;
 
       /* Keep track of how many code entry points we've seen.  */