* reloc.c (BFD_RELOC_RX_ABS16_REV): Add.

(BFD_RELOC_RX_ABS32_REV): Add.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
* elf32-rx.c (rx_reloc_map): Add them.

* config/tc-rx.c (rx_validate_fix_sub): Permit subtraction in more
cases.
(tc_gen_reloc): Fix handling of subtraction (esp wrt endianness).

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index fcf2843931999c8354887dd3b158b8fae3d36f90..39524f6cebff7042d039e08a9e8daafb0ab6a885 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,11 @@
+2010-12-16  DJ Delorie  <dj@redhat.com>
+
+       * reloc.c (BFD_RELOC_RX_ABS16_REV): Add.
+       (BFD_RELOC_RX_ABS32_REV): Add.
+       * bfd-in2.h: Regenerate.
+       * libbfd.h: Regenerate.
+       * elf32-rx.c (rx_reloc_map): Add them.
+
 2010-12-15  H.J. Lu  <hongjiu.lu@intel.com>
 
        * elf.c (_bfd_elf_new_section_hook): Special handling for

diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index e7805b61392f0d87bcfd2ad4cf8eaae16c30147c..7cf593bb81bc1391d3371c0c776aff2c582d5622 100644 (file)
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -3991,7 +3991,9 @@ instructions  */
   BFD_RELOC_RX_OP_SUBTRACT,
   BFD_RELOC_RX_ABS8,
   BFD_RELOC_RX_ABS16,
+  BFD_RELOC_RX_ABS16_REV,
   BFD_RELOC_RX_ABS32,
+  BFD_RELOC_RX_ABS32_REV,
   BFD_RELOC_RX_ABS16U,
   BFD_RELOC_RX_ABS16UW,
   BFD_RELOC_RX_ABS16UL,

diff --git a/bfd/elf32-rx.c b/bfd/elf32-rx.c
index d7e15a0e5235134dc8002e8391971cabe8fd3130..ac587efcaa4238b240247b6b74aa788bd870d4f2 100644 (file)
--- a/bfd/elf32-rx.c
+++ b/bfd/elf32-rx.c
@@ -250,7 +250,9 @@ static const struct rx_reloc_map rx_reloc_map [] =
   { BFD_RELOC_RX_OP_SUBTRACT,  R_RX_OPsub },
   { BFD_RELOC_RX_ABS8,         R_RX_ABS8 },
   { BFD_RELOC_RX_ABS16,                R_RX_ABS16 },
+  { BFD_RELOC_RX_ABS16_REV,    R_RX_ABS16_REV },
   { BFD_RELOC_RX_ABS32,                R_RX_ABS32 },
+  { BFD_RELOC_RX_ABS32_REV,    R_RX_ABS32_REV },
   { BFD_RELOC_RX_ABS16UL,      R_RX_ABS16UL },
   { BFD_RELOC_RX_ABS16UW,      R_RX_ABS16UW },
   { BFD_RELOC_RX_ABS16U,       R_RX_ABS16U }

diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index e706ce4215fed04fec28b5386cc84fac85d2cc21..5687082c468aaa9398f10b80dd0adb72deda51d7 100644 (file)
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -1802,7 +1802,9 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
   "BFD_RELOC_RX_OP_SUBTRACT",
   "BFD_RELOC_RX_ABS8",
   "BFD_RELOC_RX_ABS16",
+  "BFD_RELOC_RX_ABS16_REV",
   "BFD_RELOC_RX_ABS32",
+  "BFD_RELOC_RX_ABS32_REV",
   "BFD_RELOC_RX_ABS16U",
   "BFD_RELOC_RX_ABS16UW",
   "BFD_RELOC_RX_ABS16UL",

diff --git a/bfd/reloc.c b/bfd/reloc.c
index 5a428a26a3627e2c5955a291c0b475cf581089b0..6d4eb85232b7352850e864c60d2ed01841a67a7b 100644 (file)
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -4261,8 +4261,12 @@ ENUMX
   BFD_RELOC_RX_ABS8
 ENUMX
   BFD_RELOC_RX_ABS16
+ENUMX
+  BFD_RELOC_RX_ABS16_REV
 ENUMX
   BFD_RELOC_RX_ABS32
+ENUMX
+  BFD_RELOC_RX_ABS32_REV
 ENUMX
   BFD_RELOC_RX_ABS16U
 ENUMX

diff --git a/gas/ChangeLog b/gas/ChangeLog
index f16fbbc9da244c255443400a74518126c2198c3d..507c046eab0791a08ec4f6cbde1d6e3735a0a572 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,9 @@
+2010-12-16  DJ Delorie  <dj@redhat.com>
+
+       * config/tc-rx.c (rx_validate_fix_sub): Permit subtraction in more
+       cases.
+       (tc_gen_reloc): Fix handling of subtraction (esp wrt endianness).
+
 2010-12-16  Maciej W. Rozycki  <macro@codesourcery.com>
 
        * symbols.c (symbol_clone_if_forward_ref): Call tc_new_dot_label

diff --git a/gas/config/tc-rx.c b/gas/config/tc-rx.c
index 125686fbdc422ca169e72ebaec57e0c4c02026cc..aa582869d589f0635d93040e61728432fd99b7f7 100644 (file)
--- a/gas/config/tc-rx.c
+++ b/gas/config/tc-rx.c
@@ -1943,10 +1943,14 @@ md_convert_frag (bfd *   abfd ATTRIBUTE_UNUSED,
 int
 rx_validate_fix_sub (struct fix * f)
 {
-  /* We permit the subtraction of two symbols as a 32-bit relocation.  */
+  /* We permit the subtraction of two symbols in a few cases.  */
+  /* mov #sym1-sym2, R3 */
+  if (f->fx_r_type == BFD_RELOC_RX_32_OP)
+    return 1;
+  /* .long sym1-sym2 */
   if (f->fx_r_type == BFD_RELOC_RX_DIFF
       && ! f->fx_pcrel
-      && f->fx_size == 4)
+      && (f->fx_size == 4 || f->fx_size == 2 || f->fx_size == 1))
     return 1;
   return 0;
 }
@@ -2206,6 +2210,7 @@ arelent **
 tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
 {
   static arelent * reloc[5];
+  int is_opcode = 0;
 
   if (fixp->fx_r_type == BFD_RELOC_NONE)
     {
@@ -2226,6 +2231,13 @@ tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
   reloc[0]->address       = fixp->fx_frag->fr_address + fixp->fx_where;
   reloc[0]->addend        = fixp->fx_offset;
 
+  if (fixp->fx_r_type == BFD_RELOC_RX_32_OP
+      && fixp->fx_subsy)
+    {
+      fixp->fx_r_type = BFD_RELOC_RX_DIFF;
+      is_opcode = 1;
+    }
+
   /* Certain BFD relocations cannot be translated directly into
      a single (non-Red Hat) RX relocation, but instead need
      multiple RX relocations - handle them here.  */
@@ -2254,10 +2266,16 @@ tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
          reloc[3]->howto   = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS8);
          break;
        case 2:
-         reloc[3]->howto   = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16);
+         if (!is_opcode && target_big_endian)
+           reloc[3]->howto   = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16_REV);
+         else
+           reloc[3]->howto   = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16);
          break;
        case 4:
-         reloc[3]->howto   = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32);
+         if (!is_opcode && target_big_endian)
+           reloc[3]->howto   = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32_REV);
+         else
+           reloc[3]->howto   = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32);
          break;
        }
       reloc[3]->addend      = 0;