From 05e9452c8210da86b07b621562f4a89bd6f637d4 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Mon, 26 Mar 2007 12:23:48 +0000
Subject: 	* doc/as.texinfo (Reloc): Document. 	* read.c (potable):
 Add "reloc". 	(s_reloc): New function. 	* write.c (reloc_list): New
 global var. 	(resolve_reloc_expr_symbols): New function. 
 (write_object_file): Call it. 	(write_relocs): Process reloc_list. 	*
 write.h (struct reloc_list): New. 	(reloc_list): Declare.

---
 gas/read.c | 109 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)

(limited to 'gas/read.c')

diff --git a/gas/read.c b/gas/read.c
index c622eb2..5782f23 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -213,6 +213,7 @@ static void do_align (int, char *, int, int);
 static void s_align (int, int);
 static void s_altmacro (int);
 static void s_bad_end (int);
+static void s_reloc (int);
 static int hex_float (int, char *);
 static segT get_known_segmented_expression (expressionS * expP);
 static void pobegin (void);
@@ -391,6 +392,7 @@ static const pseudo_typeS potable[] = {
   {"psize", listing_psize, 0},	/* Set paper size.  */
   {"purgem", s_purgem, 0},
   {"quad", cons, 8},
+  {"reloc", s_reloc, 0},
   {"rep", s_rept, 0},
   {"rept", s_rept, 0},
   {"rva", s_rva, 4},
@@ -3669,6 +3671,113 @@ s_rva (int size)
   cons_worker (size, 1);
 }
 
+/* .reloc offset, reloc_name, symbol+addend.  */
+
+void
+s_reloc (int ignore ATTRIBUTE_UNUSED)
+{
+  char *stop = NULL;
+  char stopc = 0;
+  expressionS exp;
+  char *r_name;
+  int c;
+  struct reloc_list *reloc;
+
+  reloc = xmalloc (sizeof (*reloc));
+
+  if (flag_mri)
+    stop = mri_comment_field (&stopc);
+
+  expression (&exp);
+  switch (exp.X_op)
+    {
+    case O_illegal:
+    case O_absent:
+    case O_big:
+    case O_register:
+      as_bad (_("missing or bad offset expression"));
+      goto err_out;
+    case O_constant:
+      exp.X_add_symbol = section_symbol (now_seg);
+      exp.X_op = O_symbol;
+      /* Fall thru */
+    case O_symbol:
+      if (exp.X_add_number == 0)
+	{
+	  reloc->u.a.offset_sym = exp.X_add_symbol;
+	  break;
+	}
+      /* Fall thru */
+    default:
+      reloc->u.a.offset_sym = make_expr_symbol (&exp);
+      break;
+    }
+
+  SKIP_WHITESPACE ();
+  if (*input_line_pointer != ',')
+    {
+      as_bad (_("missing reloc type"));
+      goto err_out;
+    }
+
+  ++input_line_pointer;
+  SKIP_WHITESPACE ();
+  r_name = input_line_pointer;
+  c = get_symbol_end ();
+  reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name);
+  *input_line_pointer = c;
+  if (reloc->u.a.howto == NULL)
+    {
+      as_bad (_("unrecognized reloc type"));
+      goto err_out;
+    }
+
+  exp.X_op = O_absent;
+  SKIP_WHITESPACE ();
+  if (*input_line_pointer == ',')
+    {
+      ++input_line_pointer;
+      expression_and_evaluate (&exp);
+    }
+  switch (exp.X_op)
+    {
+    case O_illegal:
+    case O_big:
+    case O_register:
+      as_bad (_("bad reloc expression"));
+    err_out:
+      ignore_rest_of_line ();
+      free (reloc);
+      if (flag_mri)
+	mri_comment_end (stop, stopc);
+      return;
+    case O_absent:
+      reloc->u.a.sym = NULL;
+      reloc->u.a.addend = 0;
+      break;
+    case O_constant:
+      reloc->u.a.sym = NULL;
+      reloc->u.a.addend = exp.X_add_number;
+      break;
+    case O_symbol:
+      reloc->u.a.sym = exp.X_add_symbol;
+      reloc->u.a.addend = exp.X_add_number;
+      break;
+    default:
+      reloc->u.a.sym = make_expr_symbol (&exp);
+      reloc->u.a.addend = 0;
+      break;
+    }
+
+  as_where (&reloc->file, &reloc->line);
+  reloc->next = reloc_list;
+  reloc_list = reloc;
+
+  demand_empty_rest_of_line ();
+  if (flag_mri)
+    mri_comment_end (stop, stopc);
+}
+
 /* Put the contents of expression EXP into the object file using
    NBYTES bytes.  If need_pass_2 is 1, this does nothing.  */
 
-- 
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