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/* Assembly macros for 32-bit OpenRISC.
   Copyright (C) 1999, 2001, 2002, 2005 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
 
   Based on sysdeps/powerpc/sysdep.h
 
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
 
   The GNU C Library 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
   Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */
 
/* FIXME: this file is severely fucked */
 
#ifdef __ASSEMBLER__
 
#ifdef __ELF__
 
#if 1
/* This seems to always be the case on PPC.  (FIXME: maybe too on or32?) */
#define ALIGNARG(log2) log2
/* For ELF we need the `.type' directive to make shared libs work right.  */
#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
#endif
 
/* FIXME: support PIC / PROF */
#define CALL_MCOUNT		/* Do nothing.  */
 
#define	ENTRY(name)							      \
  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name);				      \
  ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function)			      \
  .align ALIGNARG(2);							      \
  C_LABEL(name)								      \
  CALL_MCOUNT
 
#define EALIGN_W_0  /* No words to insert.  */
#define EALIGN_W_1  l.nop
#define EALIGN_W_2  l.nop;l.nop
#define EALIGN_W_3  l.nop;l.nop;l.nop
#define EALIGN_W_4  EALIGN_W_3;l.nop
#define EALIGN_W_5  EALIGN_W_4;l.nop
#define EALIGN_W_6  EALIGN_W_5;l.nop
#define EALIGN_W_7  EALIGN_W_6;l.nop
 
/* EALIGN is like ENTRY, but does alignment to 'words'*4 bytes
   past a 2^align boundary.  */
#ifdef PROF
#define EALIGN(name, alignt, words)					      \
  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name);				      \
  ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function)			      \
  .align ALIGNARG(2);							      \
  C_LABEL(name)								      \
  CALL_MCOUNT								      \
  b 0f;									      \
  .align ALIGNARG(alignt);						      \
  EALIGN_W_##words;							      \
  0:
#else /* PROF */
#define EALIGN(name, alignt, words)					      \
  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name);				      \
  ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function)			      \
  .align ALIGNARG(alignt);						      \
  EALIGN_W_##words;							      \
  C_LABEL(name)
#endif
 
#undef	END
#define END(name)							      \
  ASM_SIZE_DIRECTIVE(name)
 
/* FIXME */
#define DO_CALL
 
#ifdef PIC
#define JUMPTARGET(name) name##@plt
#else
#define JUMPTARGET(name) name
#endif
 
#define PSEUDO(name, syscall_name, args)				      \
  .section ".text";							      \
  ENTRY (name)								      \
    DO_CALL (SYS_ify (syscall_name));
 
#define PSEUDO_RET							      \
    l.j JUMPTARGET(__syscall_error)
#define ret PSEUDO_RET
 
#undef	PSEUDO_END
#define	PSEUDO_END(name)						      \
  END (name)
 
/* Local labels stripped out by the linker.  */
#undef L
#define L(x) .L##x
 
/* Label in text section.  */
#define C_TEXT(name) name
 
#endif /* __ELF__ */
 
#endif	/* __ASSEMBLER__ */