S12Z: Emit RELOC_S12Z_OPR instead of RELOC_EXT24 where appropriate.

When assembling instructions which involve OPR references, emit
RELOC_S12Z_OPR instead of RELOC_EXT24.

bfd/
	* bfd-in2.h [BFD_RELOC_S12Z_OPR]: New reloc.
	* libbfd.h: regen.
	* elf32-s12z.c (eld_s12z_howto_table): R_S12Z_OPR takes non zero
	source field.  (md_apply_fix): Apply final fix
	to BFD_RELOC_S12Z_OPR.
	* reloc.c[BFD_RELOC_S12Z_OPR]: New reloc.

gas/
	* config/tc-s12z.c (emit_opr): Emit BFD_RELOC_S12Z_OPR instead of
	BFD_RELOC_24.
	* testsuite/gas/s12z/opr-indirect-expr.d: Expect R_S12Z_OPR instead
	of R_S12Z_EXT24.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 7a75517..5e943a1 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,12 @@
+2019-01-14  John Darrington <john@darrington.wattle.id.au>
+
+       * bfd-in2.h [BFD_RELOC_S12Z_OPR]: New reloc.
+       * libbfd.h: regen.
+       * elf32-s12z.c (eld_s12z_howto_table): R_S12Z_OPR takes non zero
+       source field.  (md_apply_fix): Apply final fix
+       to BFD_RELOC_S12Z_OPR.
+       * reloc.c[BFD_RELOC_S12Z_OPR]: New reloc.
+
 2019-01-14  Maamoun Tarsha  <maamountk@hotmail.com>
 
        PR 20113

diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index b78d212..e25da50 100644 (file)
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -6696,6 +6696,9 @@ assembler and not (currently) written to any object files.  */
   BFD_RELOC_CKCORE_IRELATIVE,
   BFD_RELOC_CKCORE_PCREL_BLOOP_IMM4BY4,
   BFD_RELOC_CKCORE_PCREL_BLOOP_IMM12BY4,
+
+/* S12Z relocations.  */
+  BFD_RELOC_S12Z_OPR,
   BFD_RELOC_UNUSED };
 
 typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;

diff --git a/bfd/elf32-s12z.c b/bfd/elf32-s12z.c
index 57681cf..a8f9b4a 100644 (file)
--- a/bfd/elf32-s12z.c
+++ b/bfd/elf32-s12z.c
@@ -119,7 +119,7 @@ static reloc_howto_type elf_s12z_howto_table[] =
         shift_addend_reloc,
         "R_S12Z_OPR",  /* name */
         FALSE,                 /* partial_inplace */
-        0x00000000,            /* src_mask */
+        0x00ffffff,            /* src_mask */
         0x00ffffff,            /* dst_mask */
         FALSE),                /* pcrel_offset */
 
@@ -232,11 +232,12 @@ struct s12z_reloc_map
 
 static const struct s12z_reloc_map s12z_reloc_map[] =
 {
-  /* bfd reloc val */ /* elf reloc val */
-  {BFD_RELOC_NONE, R_S12Z_NONE},
-  {BFD_RELOC_32, R_S12Z_EXT32},
-  {BFD_RELOC_24, R_S12Z_EXT24},
-  {BFD_RELOC_16_PCREL, R_S12Z_PCREL_7_15}
+  /* bfd reloc val */  /* elf reloc val */
+  {BFD_RELOC_NONE,     R_S12Z_NONE},
+  {BFD_RELOC_32,       R_S12Z_EXT32},
+  {BFD_RELOC_24,       R_S12Z_EXT24},
+  {BFD_RELOC_16_PCREL, R_S12Z_PCREL_7_15},
+  {BFD_RELOC_S12Z_OPR, R_S12Z_OPR}
 };
 
 static reloc_howto_type *

diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index e56ef37..36284d7 100644 (file)
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -3320,6 +3320,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
   "BFD_RELOC_CKCORE_IRELATIVE",
   "BFD_RELOC_CKCORE_PCREL_BLOOP_IMM4BY4",
   "BFD_RELOC_CKCORE_PCREL_BLOOP_IMM12BY4",
+  "BFD_RELOC_S12Z_OPR",
  "@@overflow: BFD_RELOC_UNUSED@@",
 };
 #endif

diff --git a/bfd/reloc.c b/bfd/reloc.c
index b8a1cfe..e6446a7 100644 (file)
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -8052,6 +8052,11 @@ ENUMX
 ENUMDOC
   C-SKY relocations.
 
+ENUM
+  BFD_RELOC_S12Z_OPR
+ENUMDOC
+  S12Z relocations.
+
 ENDSENUM
   BFD_RELOC_UNUSED
 CODE_FRAGMENT

diff --git a/gas/ChangeLog b/gas/ChangeLog
index abc0923..986af84 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2019-01-16  John Darrington <john@darrington.wattle.id.au>
+
+        * config/tc-s12z.c (emit_opr): Emit BFD_RELOC_S12Z_OPR instead of
+       BFD_RELOC_24.
+       * testsuite/gas/s12z/opr-indirect-expr.d: Expect R_S12Z_OPR instead
+       of R_S12Z_EXT24.
+
 2019-01-14  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>
 
        * config/tc-arm.c (arm_ext_v6k_v6t2): Define.

diff --git a/gas/config/tc-s12z.c b/gas/config/tc-s12z.c
index 2f98c04..7d1ddf6 100644 (file)
--- a/gas/config/tc-s12z.c
+++ b/gas/config/tc-s12z.c
@@ -732,12 +732,17 @@ emit_opr (char *f, const uint8_t *buffer, int n_bytes, expressionS *exp)
   number_to_chars_bigendian (f++, buffer[0], 1);
   if (exp->X_op != O_absent && exp->X_op != O_constant)
     {
-      fix_new_exp (frag_now,
-                  f - frag_now->fr_literal,
-                  3,
-                  exp,
-                  FALSE,
-                  BFD_RELOC_24);
+      fixS *fix = fix_new_exp (frag_now,
+                              f - frag_now->fr_literal,
+                              3,
+                              exp,
+                              FALSE,
+                              BFD_RELOC_S12Z_OPR);
+      /* Some third party tools seem to use the lower bits
+       of this addend for flags.   They don't get added
+       to the final location.   The purpose of these flags
+       is not known.  We simply set it to zero.  */
+      fix->fx_addnumber = 0x00;
     }
   for (i = 1; i < n_bytes; ++i)
     number_to_chars_bigendian (f++,  buffer[i], 1);
@@ -3821,6 +3826,7 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
       bfd_putb16 ((bfd_vma) value, (unsigned char *) where);
       break;
     case BFD_RELOC_24:
+    case BFD_RELOC_S12Z_OPR:
       bfd_putb24 ((bfd_vma) value, (unsigned char *) where);
       break;
     case BFD_RELOC_32:

diff --git a/gas/testsuite/gas/s12z/opr-indirect-expr.d b/gas/testsuite/gas/s12z/opr-indirect-expr.d
index f7a1fcd..8facde5 100644 (file)
--- a/gas/testsuite/gas/s12z/opr-indirect-expr.d
+++ b/gas/testsuite/gas/s12z/opr-indirect-expr.d
@@ -11,4 +11,4 @@ Disassembly of section .text:
 00000000 <.text>:
    0:  a7 fe 00 00     ld d7, \[1\]
    4:  01 
-                       2: R_S12Z_EXT24 FOO
+                       2: R_S12Z_OPR   FOO