openwrt/toolchain/gcc/3.4.5/71_all_sh-pr16665-fix.patch

   1 --- gcc/gcc/config/sh/sh.c
   2 +++ gcc/gcc/config/sh/sh.c
   3 @@ -9106,6 +9106,15 @@ sh_output_mi_thunk (FILE *file, tree thu
   4      }
   5    this = FUNCTION_ARG (cum, Pmode, ptr_type_node, 1);
   6
   7 +  /* In PIC case, we set PIC register to compute the target address.  We
   8 +     can use a scratch register to save and restore the original value
   9 +     except for SHcompact.  For SHcompact, use stack.  */
  10 +  if (flag_pic && TARGET_SHCOMPACT)
  11 +    {
  12 +      push (PIC_OFFSET_TABLE_REGNUM);
  13 +      emit_insn (gen_GOTaddr2picreg ());
  14 +    }
  15 +
  16    /* For SHcompact, we only have r0 for a scratch register: r1 is the
  17       static chain pointer (even if you can't have nested virtual functions
  18       right now, someone might implement them sometime), and the rest of the
  19 @@ -9188,8 +9197,24 @@ sh_output_mi_thunk (FILE *file, tree thu
  20        assemble_external (function);
  21        TREE_USED (function) = 1;
  22      }
  23 +  /* We can use scratch1 to save and restore the original value of
  24 +     PIC register except for SHcompact.  */
  25 +  if (flag_pic && ! TARGET_SHCOMPACT)
  26 +    {
  27 +      emit_move_insn (scratch1,
  28 +                     gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM));
  29 +      emit_insn (gen_GOTaddr2picreg ());
  30 +    }
  31    funexp = XEXP (DECL_RTL (function), 0);
  32    emit_move_insn (scratch2, funexp);
  33 +  if (flag_pic)
  34 +    {
  35 +      if (! TARGET_SHCOMPACT)
  36 +       emit_move_insn (gen_rtx_REG (Pmode, PIC_OFFSET_TABLE_REGNUM),
  37 +                       scratch1);
  38 +      else
  39 +       pop (PIC_OFFSET_TABLE_REGNUM);
  40 +    }
  41    funexp = gen_rtx_MEM (FUNCTION_MODE, scratch2);
  42    sibcall = emit_call_insn (gen_sibcall (funexp, const0_rtx, NULL_RTX));
  43    SIBLING_CALL_P (sibcall) = 1;