start at handling branch taken/branch not taken hints.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index ac958583fdd374d458c33fc7cc6ccd63b2c4178d..f26eb85eb4ccf804693a746d51650c27828eae5d 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+Fri Sep 22 16:34:46 1995  Michael Meissner  <meissner@tiktok.cygnus.com>
+
+       * config/tc-ppc.c (ppc_elf_suffix): Rewrite to use a table of
+       strings and relocations they represent.  Add @br{,n}taken for
+       branch taken/not taken support.
+       (md_apply_fix3): Add BFD_RELOC_PPC_B16_BR{,N}TAKEN support.
+
 Thu Sep 21 21:10:17 1995  Michael Meissner  <meissner@cygnus.com>
 
        * config/tc-ppc.c (md_parse_option): -mrelocatable-lib now only

diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index 01f152fc64d5d5db42b59abe1a3e2e816cc85c9e..435d0fb0190d997758f63e282e80f2a8cbda0d95 100644 (file)
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -554,41 +554,46 @@ static bfd_reloc_code_real_type
 ppc_elf_suffix (str_p)
      char **str_p;
 {
-  char *str = *str_p;
+  struct map_bfd {
+    char *string;
+    int length;
+    bfd_reloc_code_real_type reloc;
+  };
 
-  if (*str != '@')
+  char *str = *str_p;
+  int ch;
+  struct map_bfd *ptr;
+
+  static struct map_bfd mapping[] = {
+    { "GOT",           3,      BFD_RELOC_PPC_TOC16 },
+    { "got",           3,      BFD_RELOC_PPC_TOC16 },
+    { "L",             1,      BFD_RELOC_LO16 },
+    { "l",             1,      BFD_RELOC_LO16 },
+    { "HA",            2,      BFD_RELOC_HI16_S },
+    { "ha",            2,      BFD_RELOC_HI16_S },
+    { "H",             1,      BFD_RELOC_HI16 },
+    { "h",             1,      BFD_RELOC_HI16 },
+    { "SDAREL",                6,      BFD_RELOC_GPREL16 },
+    { "sdarel",                6,      BFD_RELOC_GPREL16 },
+    { "FIXUP",         5,      BFD_RELOC_CTOR },       /* synonym for BFD_RELOC_32 that doesn't get */
+    { "fixup",         5,      BFD_RELOC_CTOR },       /* warnings with -mrelocatable */
+    { "BRTAKEN",       7,      BFD_RELOC_PPC_B16_BRTAKEN },
+    { "brtaken",       7,      BFD_RELOC_PPC_B16_BRTAKEN },
+    { "BRNTAKEN",      8,      BFD_RELOC_PPC_B16_BRNTAKEN },
+    { "brntaken",      8,      BFD_RELOC_PPC_B16_BRNTAKEN },
+    { (char *)0,       0,      BFD_RELOC_UNUSED }
+  };
+
+  if (*str++ != '@')
     return BFD_RELOC_UNUSED;
 
-  if (strncmp (str, "@GOT", 4) == 0 || strncmp (str, "@got", 4) == 0)
-    {
-      *str_p += 4;
-      return BFD_RELOC_PPC_TOC16;
-    }
-  else if (strncmp (str, "@L", 2) == 0 || strncmp (str, "@l", 2) == 0)
-    {
-      *str_p += 2;
-      return BFD_RELOC_LO16;
-    }
-  else if (strncmp (str, "@HA", 3) == 0 || strncmp (str, "@ha", 3) == 0)
-    {
-      *str_p += 3;
-      return BFD_RELOC_HI16_S;
-    }
-  else if (strncmp (str, "@H", 2) == 0 || strncmp (str, "@h", 2) == 0)
-    {
-      *str_p += 2;
-      return BFD_RELOC_HI16;
-    }
-  else if (strncmp (str, "@sdarel", 7) == 0 || strncmp (str, "@sdarel", 7) == 0)
-    {
-      *str_p += 7;
-      return BFD_RELOC_GPREL16;
-    }
-  else if (strncmp (str, "@FIXUP", 6) == 0 || strncmp (str, "@fixup", 6) == 0)
-    {
-      *str_p += 6;
-      return BFD_RELOC_CTOR;   /* synonym for BFD_RELOC_32 that doesn't get */
-    }                          /* warnings with -mrelocatable */
+  ch = *str;
+  for (ptr = &mapping[0]; ptr->length > 0; ptr++)
+    if (ch == ptr->string[0] && strncmp (str, ptr->string, ptr->length) == 0)
+      {
+       *str_p = str + ptr->length;
+       return ptr->reloc;
+      }
 
   return BFD_RELOC_UNUSED;
 }
@@ -2790,6 +2795,9 @@ md_apply_fix3 (fixp, valuep, seg)
          if (fixp->fx_pcrel)
            abort ();
 
+       case BFD_RELOC_PPC_B16_BRTAKEN:
+       case BFD_RELOC_PPC_B16_BRNTAKEN:
+         value <<= 2;
          md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
                              value, 2);
          break;