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[deliverable/binutils-gdb.git] / bfd / elf32-arm.c

diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c
index d36a7a538f10ba705db666e49778a622bb5fb4e8..c9e314eafe55f4161f15f40a27ac4fa5ba8a74f4 100644 (file)
--- a/bfd/elf32-arm.c
+++ b/bfd/elf32-arm.c
@@ -79,7 +79,7 @@ static reloc_howto_type elf32_arm_howto_table_1[] =
   /* No relocation.  */
   HOWTO (R_ARM_NONE,           /* type */
         0,                     /* rightshift */
-        0,                     /* size (0 = byte, 1 = short, 2 = long) */
+        3,                     /* size (0 = byte, 1 = short, 2 = long) */
         0,                     /* bitsize */
         FALSE,                 /* pc_relative */
         0,                     /* bitpos */
@@ -11972,7 +11972,7 @@ elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
              /* Tag_ABI_HardFP_use is handled along with Tag_FP_arch since
                 the meaning of Tag_ABI_HardFP_use depends on Tag_FP_arch
                 when it's 0.  It might mean absence of FP hardware if
-                Tag_FP_arch is zero, otherwise it is effectively SP + DP.  */
+                Tag_FP_arch is zero.  */
 
 #define VFP_VERSION_COUNT 9
              static const struct
@@ -12014,7 +12014,7 @@ elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
                }
 
              /* Both the input and the output have nonzero Tag_FP_arch.
-                So Tag_ABI_HardFP_use is (SP & DP) when it's zero.  */
+                So Tag_ABI_HardFP_use is implied by Tag_FP_arch when it's zero.  */
 
              /* If both the input and the output have zero Tag_ABI_HardFP_use,
                 do nothing.  */
@@ -12022,10 +12022,10 @@ elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
                  && out_attr[Tag_ABI_HardFP_use].i == 0)
                ;
              /* If the input and the output have different Tag_ABI_HardFP_use,
-                the combination of them is 3 (SP & DP).  */
+                the combination of them is 0 (implied by Tag_FP_arch).  */
              else if (in_attr[Tag_ABI_HardFP_use].i
                       != out_attr[Tag_ABI_HardFP_use].i)
-               out_attr[Tag_ABI_HardFP_use].i = 3;
+               out_attr[Tag_ABI_HardFP_use].i = 0;
 
              /* Now we can handle Tag_FP_arch.  */
 
@@ -14238,12 +14238,16 @@ elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
       if (!h->def_regular)
        {
          /* Mark the symbol as undefined, rather than as defined in
-            the .plt section.  Leave the value alone.  */
+            the .plt section.  */
          sym->st_shndx = SHN_UNDEF;
-         /* If the symbol is weak, we do need to clear the value.
+         /* If the symbol is weak we need to clear the value.
             Otherwise, the PLT entry would provide a definition for
             the symbol even if the symbol wasn't defined anywhere,
-            and so the symbol would never be NULL.  */
+            and so the symbol would never be NULL.  Leave the value if
+            there were any relocations where pointer equality matters
+            (this is a clue for the dynamic linker, to make function
+            pointer comparisons work between an application and shared
+            library).  */
          if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
            sym->st_value = 0;
        }