darwin.md

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/* Machine description patterns for PowerPC running Darwin (Mac OS X).
   Copyright (C) 2004, 2005 Free Software Foundation, Inc.
   Contributed by Apple Computer Inc.

This file is part of GCC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

(define_insn "adddi3_high"
  [(set (match_operand:DI 0 "gpc_reg_operand" "=b")
        (plus:DI (match_operand:DI 1 "gpc_reg_operand" "b")
                 (high:DI (match_operand 2 "" ""))))]
  "TARGET_MACHO && TARGET_64BIT"
  "{cau|addis} %0,%1,ha16(%2)"
  [(set_attr "length" "4")])

(define_insn "movdf_low_si"
  [(set (match_operand:DF 0 "gpc_reg_operand" "=f,!r")
        (mem:DF (lo_sum:SI (match_operand:SI 1 "gpc_reg_operand" "b,b")
                           (match_operand 2 "" ""))))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && ! TARGET_64BIT"
  "*
{
  switch (which_alternative)
    {
      case 0:
	return \"lfd %0,lo16(%2)(%1)\";
      case 1:
	{
	  rtx operands2[4];
	  operands2[0] = operands[0];
	  operands2[1] = operands[1];
	  operands2[2] = operands[2];
	  if (TARGET_POWERPC64 && TARGET_32BIT)
	    /* Note, old assemblers didn't support relocation here.  */
	    return \"ld %0,lo16(%2)(%1)\";
	  else
	  {
	    operands2[3] = gen_rtx_REG (SImode, RS6000_PIC_OFFSET_TABLE_REGNUM);
	    output_asm_insn (\"{l|lwz} %0,lo16(%2)(%1)\", operands);
#if TARGET_MACHO
	    if (MACHO_DYNAMIC_NO_PIC_P)
	      output_asm_insn (\"{liu|lis} %L0,ha16(%2+4)\", operands);
	    else
	    /* We cannot rely on ha16(low half)==ha16(high half), alas,
	       although in practice it almost always is.  */
	    output_asm_insn (\"{cau|addis} %L0,%3,ha16(%2+4)\", operands2);
#endif
	    return (\"{l|lwz} %L0,lo16(%2+4)(%L0)\");
	  }
	}
      default:
	abort();
    }
}"
  [(set_attr "type" "load")
   (set_attr "length" "4,12")])


(define_insn "movdf_low_di"
  [(set (match_operand:DF 0 "gpc_reg_operand" "=f,!r")
        (mem:DF (lo_sum:DI (match_operand:DI 1 "gpc_reg_operand" "b,b")
                           (match_operand 2 "" ""))))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && TARGET_64BIT"
  "*
{
  switch (which_alternative)
    {
      case 0:
	return \"lfd %0,lo16(%2)(%1)\";
      case 1:
	return \"ld %0,lo16(%2)(%1)\";
      default:
	abort();
    }
}"
  [(set_attr "type" "load")
   (set_attr "length" "4,4")])

(define_insn "movdf_low_st_si"
  [(set (mem:DF (lo_sum:SI (match_operand:SI 1 "gpc_reg_operand" "b")
                           (match_operand 2 "" "")))
	(match_operand:DF 0 "gpc_reg_operand" "f"))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && ! TARGET_64BIT"
  "stfd %0,lo16(%2)(%1)"
  [(set_attr "type" "store")
   (set_attr "length" "4")])

(define_insn "movdf_low_st_di"
  [(set (mem:DF (lo_sum:DI (match_operand:DI 1 "gpc_reg_operand" "b")
                           (match_operand 2 "" "")))
	(match_operand:DF 0 "gpc_reg_operand" "f"))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && TARGET_64BIT"
  "stfd %0,lo16(%2)(%1)"
  [(set_attr "type" "store")
   (set_attr "length" "4")])

(define_insn "movsf_low_si"
  [(set (match_operand:SF 0 "gpc_reg_operand" "=f,!r")
        (mem:SF (lo_sum:SI (match_operand:SI 1 "gpc_reg_operand" "b,b")
                           (match_operand 2 "" ""))))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && ! TARGET_64BIT"
  "@
   lfs %0,lo16(%2)(%1)
   {l|lwz} %0,lo16(%2)(%1)"
  [(set_attr "type" "load")
   (set_attr "length" "4")])

(define_insn "movsf_low_di"
  [(set (match_operand:SF 0 "gpc_reg_operand" "=f,!r")
        (mem:SF (lo_sum:DI (match_operand:DI 1 "gpc_reg_operand" "b,b")
                           (match_operand 2 "" ""))))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && TARGET_64BIT"
  "@
   lfs %0,lo16(%2)(%1)
   {l|lwz} %0,lo16(%2)(%1)"
  [(set_attr "type" "load")
   (set_attr "length" "4")])

(define_insn "movsf_low_st_si"
  [(set (mem:SF (lo_sum:SI (match_operand:SI 1 "gpc_reg_operand" "b,b")
                           (match_operand 2 "" "")))
	(match_operand:SF 0 "gpc_reg_operand" "f,!r"))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && ! TARGET_64BIT"
  "@
   stfs %0,lo16(%2)(%1)
   {st|stw} %0,lo16(%2)(%1)"
  [(set_attr "type" "store")
   (set_attr "length" "4")])

(define_insn "movsf_low_st_di"
  [(set (mem:SF (lo_sum:DI (match_operand:DI 1 "gpc_reg_operand" "b,b")
                           (match_operand 2 "" "")))
	(match_operand:SF 0 "gpc_reg_operand" "f,!r"))]
  "TARGET_MACHO && TARGET_HARD_FLOAT && TARGET_FPRS && TARGET_64BIT"
  "@
   stfs %0,lo16(%2)(%1)
   {st|stw} %0,lo16(%2)(%1)"
  [(set_attr "type" "store")
   (set_attr "length" "4")])

;; 64-bit MachO load/store support
(define_insn "movdi_low"
  [(set (match_operand:DI 0 "gpc_reg_operand" "=r")
        (mem:DI (lo_sum:DI (match_operand:DI 1 "gpc_reg_operand" "b")
                           (match_operand 2 "" ""))))]
  "TARGET_MACHO && TARGET_64BIT"
  "{l|ld} %0,lo16(%2)(%1)"
  [(set_attr "type" "load")
   (set_attr "length" "4")])

(define_insn "movsi_low_st"
  [(set (mem:SI (lo_sum:SI (match_operand:SI 1 "gpc_reg_operand" "b")
                           (match_operand 2 "" "")))
	(match_operand:SI 0 "gpc_reg_operand" "r"))]
  "TARGET_MACHO && ! TARGET_64BIT"
  "{st|stw} %0,lo16(%2)(%1)"
  [(set_attr "type" "store")
   (set_attr "length" "4")])

(define_insn "movdi_low_st"
  [(set (mem:DI (lo_sum:DI (match_operand:DI 1 "gpc_reg_operand" "b")
                           (match_operand 2 "" "")))
	(match_operand:DI 0 "gpc_reg_operand" "r"))]
  "TARGET_MACHO && TARGET_64BIT"
  "{st|std} %0,lo16(%2)(%1)"
  [(set_attr "type" "store")
   (set_attr "length" "4")])

;; Mach-O PIC trickery.
(define_expand "macho_high"
  [(set (match_operand 0 "" "")
	(high (match_operand 1 "" "")))]
  "TARGET_MACHO"
{
  if (TARGET_64BIT)
    emit_insn (gen_macho_high_di (operands[0], operands[1]));
  else
    emit_insn (gen_macho_high_si (operands[0], operands[1]));

  DONE;
})

(define_insn "macho_high_si"
  [(set (match_operand:SI 0 "gpc_reg_operand" "=b*r")
	(high:SI (match_operand 1 "" "")))]
  "TARGET_MACHO && ! TARGET_64BIT"
  "{liu|lis} %0,ha16(%1)")
  

(define_insn "macho_high_di"
  [(set (match_operand:DI 0 "gpc_reg_operand" "=b*r")
	(high:DI (match_operand 1 "" "")))]
  "TARGET_MACHO && TARGET_64BIT"
  "{liu|lis} %0,ha16(%1)")

(define_expand "macho_low"
  [(set (match_operand 0 "" "")
	(lo_sum (match_operand 1 "" "")
		   (match_operand 2 "" "")))]
   "TARGET_MACHO"
{
  if (TARGET_64BIT)
    emit_insn (gen_macho_low_di (operands[0], operands[1], operands[2]));
  else
    emit_insn (gen_macho_low_si (operands[0], operands[1], operands[2]));

  DONE;
})

(define_insn "macho_low_si"
  [(set (match_operand:SI 0 "gpc_reg_operand" "=r,r")
	(lo_sum:SI (match_operand:SI 1 "gpc_reg_operand" "b,!*r")
		   (match_operand 2 "" "")))]
   "TARGET_MACHO && ! TARGET_64BIT"
   "@
    {cal %0,%a2@l(%1)|la %0,lo16(%2)(%1)}
    {cal %0,%a2@l(%1)|addic %0,%1,lo16(%2)}")

(define_insn "macho_low_di"
  [(set (match_operand:DI 0 "gpc_reg_operand" "=r,r")
	(lo_sum:DI (match_operand:DI 1 "gpc_reg_operand" "b,!*r")
		   (match_operand 2 "" "")))]
   "TARGET_MACHO && TARGET_64BIT"
   "@
    {cal %0,%a2@l(%1)|la %0,lo16(%2)(%1)}
    {cal %0,%a2@l(%1)|addic %0,%1,lo16(%2)}")

(define_split
  [(set (mem:V4SI (plus:DI (match_operand:DI 0 "gpc_reg_operand" "")
			 (match_operand:DI 1 "short_cint_operand" "")))
	(match_operand:V4SI 2 "register_operand" ""))
   (clobber (match_operand:DI 3 "gpc_reg_operand" ""))]
  "TARGET_MACHO && TARGET_64BIT"
  [(set (match_dup 3) (plus:DI (match_dup 0) (match_dup 1)))
   (set (mem:V4SI (match_dup 3))
	(match_dup 2))]
  "")

(define_expand "load_macho_picbase"
  [(set (match_operand 0 "" "")
        (unspec [(match_operand 1 "" "")]
                   UNSPEC_LD_MPIC))]
  "(DEFAULT_ABI == ABI_DARWIN) && flag_pic"
{
  if (TARGET_32BIT)
    emit_insn (gen_load_macho_picbase_si (operands[0], operands[1]));
  else
    emit_insn (gen_load_macho_picbase_di (operands[0], operands[1]));

  DONE;
})

(define_insn "load_macho_picbase_si"
  [(set (match_operand:SI 0 "register_operand" "=l")
	(unspec:SI [(match_operand:SI 1 "immediate_operand" "s")]
		   UNSPEC_LD_MPIC))]
  "(DEFAULT_ABI == ABI_DARWIN) && flag_pic"
  "bcl 20,31,%1\\n%1:"