From 32619c583f94850067c7effe0cf10adcfc4487f0 Mon Sep 17 00:00:00 2001
From: Jeff Law <law@redhat.com>
Date: Sat, 13 Nov 1993 00:28:06 +0000
Subject: [PATCH]         * som.c (hppa_som_gen_reloc_type): New function.     
    (som_bfd_reloc_type_lookup): New function.

---
 bfd/ChangeLog |  3 ++
 bfd/som.c     | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 87 insertions(+), 1 deletion(-)

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index c2e39f72c7..6a5dfaaf7d 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,8 @@
 Fri Nov 12 15:29:36 1993  Jeffrey A. Law  (law@snake.cs.utah.edu)
 
+	* som.c (hppa_som_gen_reloc_type): New function.
+	(som_bfd_reloc_type_lookup): New function.
+
 	* som.c (try_prev_fixup): New function.
 	(som_reloc_skip): New function.
 	(som_reloc_addend): New function.
diff --git a/bfd/som.c b/bfd/som.c
index 3112286602..ad3df0139f 100644
--- a/bfd/som.c
+++ b/bfd/som.c
@@ -700,7 +700,90 @@ hppa_som_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd)
     }
   return bfd_reloc_ok;
 }
-  
+
+/* Given a generic HPPA relocation type, the instruction format,
+   and a field selector, return an appropriate SOM reloation.
+
+   FIXME.  Need to handle %RR, %LR and the like as field selectors.
+   These will need to generate multiple SOM relocations.  */ 
+
+int **
+hppa_som_gen_reloc_type (abfd, base_type, format, field)
+     bfd *abfd;
+     int base_type;
+     int format;
+     int field;
+{
+  int *final_type, **final_types;
+
+  final_types = (int **) bfd_alloc_by_size_t (abfd, sizeof (int *) * 2);
+  final_type = (int *) bfd_alloc_by_size_t (abfd, sizeof (int));
+
+
+  final_types[0] = final_type;
+  final_types[1] = NULL;
+
+  /* Default to the basic relocation passed in.  */
+  *final_type = base_type;
+
+  switch (base_type)
+    {
+    case R_HPPA:
+      /* PLABELs get their own relocation type.  */
+      if (field == e_psel
+	  || field == e_lpsel
+	  || field == e_rpsel)
+	  {
+	    /* A PLABEL relocation that has a size of 32 bits must
+	       be a R_DATA_PLABEL.  All others are R_CODE_PLABELs.  */
+	    if (format == 32)
+	      *final_type = R_DATA_PLABEL;
+	    else
+	      *final_type = R_CODE_PLABEL;
+	  }
+      /* A relocatoin in the data space is always a full 32bits.  */
+      else if (format == 32)
+	*final_type = R_DATA_ONE_SYMBOL;
+
+      break;
+
+    case R_HPPA_GOTOFF:
+      /* More PLABEL special cases.  */
+      if (field == e_psel
+	  || field == e_lpsel
+	  || field == e_rpsel)
+	*final_type = R_DATA_PLABEL;
+      break;
+
+    case R_HPPA_NONE:
+    case R_HPPA_ABS_CALL:
+    case R_HPPA_PCREL_CALL:
+    case R_HPPA_COMPLEX:
+    case R_HPPA_COMPLEX_PCREL_CALL:
+    case R_HPPA_COMPLEX_ABS_CALL:
+      /* Right now we can default all these.  */
+      break;
+    }
+  return final_types;
+}
+
+/* Return the address of the correct entry in the PA SOM relocation
+   howto table.  */
+
+static reloc_howto_type *
+som_bfd_reloc_type_lookup (arch, code)
+     bfd_arch_info_type *arch;
+     bfd_reloc_code_real_type code;
+{
+  if ((int) code < (int) R_NO_RELOCATION + 255)
+    {
+      BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code);
+      return &som_hppa_howto_table[(int) code];
+    }
+
+  return (reloc_howto_type *) 0;
+}
+
 /* Perform some initialization for an object.  Save results of this
    initialization in the BFD.  */