* elf32-v850.c (elf_v850_howto_table): Fix ordering of

        R_V850_ZDAOFFSET and R_V850_TDAOFFSET.  Fix various
        fields in R_V850_TDAOFFSET.
        (elf32_v850_bfd_final_link_relocate): Tweak pc-relative
        relocs to work more like other relocs.  Handle R_V850_TDAOFF
        relocations.
v850 tda, sda & zda stuff.

2 files changed, 79 insertions, 19 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 9a3b3da..2b8fdcc 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,6 +1,13 @@
 start-sanitize-v850
 Tue Oct 22 19:20:38 1996  Jeffrey A Law  (law@cygnus.com)
 
+	* elf32-v850.c (elf_v850_howto_table): Fix ordering of
+	R_V850_ZDAOFFSET and R_V850_TDAOFFSET.  Fix various
+	fields in R_V850_TDAOFFSET.
+	(elf32_v850_bfd_final_link_relocate): Tweak pc-relative
+	relocs to work more like other relocs.  Handle R_V850_TDAOFF
+	relocations.
+
 	* elf32-v850.c: Include bfdlink.h.
 	(bfd_elf32_v850_reloc): Return an error if we get a reloc
 	we can't handle.
diff --git a/bfd/elf32-v850.c b/bfd/elf32-v850.c
index 4079da0..8e66789 100644
--- a/bfd/elf32-v850.c
+++ b/bfd/elf32-v850.c
@@ -193,7 +193,7 @@ static reloc_howto_type elf_v850_howto_table[] =
   /* Offset from the short data area pointer.  */
   HOWTO (R_V850_SDA_OFFSET,     /* type */
          0,                     /* rightshift */
-         1,                     /* size (0 = byte, 1 = short, 2 = long) */
+         0,                     /* size (0 = byte, 1 = short, 2 = long) */
          16,                    /* bitsize */
          false,                 /* pc_relative */
          0,                     /* bitpos */
@@ -205,8 +205,8 @@ static reloc_howto_type elf_v850_howto_table[] =
          0xffff,                /* dst_mask */
          false),                /* pcrel_offset */
 
-  /* Offset from the tiny data area pointer.  */
-  HOWTO (R_V850_TDA_OFFSET,     /* type */
+  /* Offset from the zero data area pointer.  */
+  HOWTO (R_V850_ZDA_OFFSET,     /* type */
          0,                     /* rightshift */
          1,                     /* size (0 = byte, 1 = short, 2 = long) */
          16,                    /* bitsize */
@@ -214,25 +214,25 @@ static reloc_howto_type elf_v850_howto_table[] =
          0,                     /* bitpos */
          complain_overflow_dont,/* complain_on_overflow */
          bfd_elf_generic_reloc, /* special_function */
-         "R_V850_TDA_OFFSET",   /* name */
+         "R_V850_ZDA_OFFSET",   /* name */
          true,                  /* partial_inplace */
          0xffff,                /* src_mask */
          0xffff,                /* dst_mask */
          false),                /* pcrel_offset */
 
-  /* Offset from the zero data area pointer.  */
-  HOWTO (R_V850_ZDA_OFFSET,     /* type */
+  /* Offset from the tiny data area pointer.  */
+  HOWTO (R_V850_TDA_OFFSET,     /* type */
          0,                     /* rightshift */
-         1,                     /* size (0 = byte, 1 = short, 2 = long) */
-         16,                    /* bitsize */
+         2,                     /* size (0 = byte, 1 = short, 2 = long) */
+         8,                    /* bitsize */
          false,                 /* pc_relative */
          0,                     /* bitpos */
          complain_overflow_dont,/* complain_on_overflow */
          bfd_elf_generic_reloc, /* special_function */
-         "R_V850_ZDA_OFFSET",   /* name */
+         "R_V850_TDA_OFFSET",   /* name */
          true,                  /* partial_inplace */
-         0xffff,                /* src_mask */
-         0xffff,                /* dst_mask */
+         0xff,                /* src_mask */
+         0xff,                /* dst_mask */
          false),                /* pcrel_offset */
 
 };
@@ -458,7 +458,7 @@ elf32_v850_bfd_final_link_relocate (howto, input_bfd, output_bfd,
 	return bfd_reloc_dangerous;
 
       insn = bfd_get_16 (input_bfd, hit_data);
-      insn &= 0xf870;
+      insn &= 0x078f;
       insn |= ((value & 0x1f0) << 7) | ((value & 0x0e) << 3);
       bfd_put_16 (input_bfd, insn, hit_data);
       return bfd_reloc_ok;
@@ -475,7 +475,7 @@ elf32_v850_bfd_final_link_relocate (howto, input_bfd, output_bfd,
 	return bfd_reloc_dangerous;
 
       insn = bfd_get_32 (input_bfd, hit_data);
-      insn &= ~0xfffe003f;
+      insn &= 0x1ffc0;
       insn |= (((value & 0xfffe) << 16) | ((value & 0x3f0000) >> 16));
       bfd_put_32 (input_bfd, insn, hit_data);
       return bfd_reloc_ok;
@@ -562,7 +562,7 @@ elf32_v850_bfd_final_link_relocate (howto, input_bfd, output_bfd,
 	unsigned long ep;
 	struct bfd_link_hash_entry *h;
 
-	value += bfd_get_16 (input_bfd, hit_data);
+	insn = bfd_get_16 (input_bfd, hit_data);
 
 	/* Get the value of __ep.  */
 	h = bfd_link_hash_lookup (info->hash, "__ep", false,
@@ -577,11 +577,64 @@ elf32_v850_bfd_final_link_relocate (howto, input_bfd, output_bfd,
 	value -= ep;
 
 
-	if ((long)value > 0x7fff || (long)value < -0x8000)
-	  return bfd_reloc_overflow;
-
-	bfd_put_16 (input_bfd, value, hit_data);
-	return bfd_reloc_ok;
+	/* Overflow computation and operand insertion is complicated
+	   by valid offsets and insertions changing depending on the
+	   instruction being used!  */
+	if ((insn & 0x0780) == 0x0500)
+	  {
+	    value += ((insn & 0x7f) << 2);
+
+	    /* Handle sld.w and sst.w -- 8 bit unsigned offset */
+	    if ((long) value > 0xff || (long) value < 0)
+	      return bfd_reloc_overflow;
+
+	    if ((value % 4) != 0)
+	      return bfd_reloc_dangerous;
+
+	    insn &= 0xff81;
+	    insn |= (value >> 1);
+	    bfd_put_16 (input_bfd, insn, hit_data);
+	    return bfd_reloc_ok;
+	  }
+
+	if ((insn & 0x0780) == 0x0400 || (insn & 0x0780) == 0x0480)
+	  {
+	    value += ((insn & 0x7f) << 1);
+
+	    /* Handle sld.h and sst.h -- 8 bit unsigned offset */
+	    if ((long) value > 0xff || (long) value < 0)
+	      return bfd_reloc_overflow;
+
+	    if ((value % 2) != 0)
+	      return bfd_reloc_dangerous;
+
+	    insn &= 0xff80;
+	    insn |= (value >> 1);
+	    bfd_put_16 (input_bfd, insn, hit_data);
+	    return bfd_reloc_ok;
+	  }
+
+	if ((insn & 0x0780) == 0x0300 || (insn & 0x0780) == 0x0380)
+	  {
+	    value += (insn & 0x7f);
+
+	    /* Handle sld.b and sst.b -- 7 bit unsigned offset */
+	    if ((long) value > 0x7f || (long) value < 0)
+	      return bfd_reloc_overflow;
+	    insn &= 0xff80;
+	    insn |= value;
+	    bfd_put_16 (input_bfd, insn, hit_data);
+	    return bfd_reloc_ok;
+	  }
+
+	/* Guess (XXX) that it's a movea instruction or something
+	   similar.  */
+	value += insn;
+        if ((long)value > 0x7fff || (long)value < -0x8000)
+          return bfd_reloc_overflow;
+
+        bfd_put_16 (input_bfd, value, hit_data);
+        return bfd_reloc_ok;
       }
     
     case R_V850_NONE: