Logo Search packages:      
Sourcecode: libdfp version File versions  Download package

sysdep.h

/* Assembly macros for 32-bit PowerPC.

   Copyright (C) 1999, 2001, 2002, 2003, 2006, 2009
   Free Software Foundation, Inc.

   This file is part of the Decimal Floating Point C Library.

   The Decimal Floating Point C Library is free software; you can
   redistribute it and/or modify it under the terms of the GNU Lesser
   General Public License version 2.1.

   The Decimal Floating Point 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 version 2.1 for more details.

   You should have received a copy of the GNU Lesser General Public
   License version 2.1 along with the Decimal Floating Point C Library;
   if not, write to the Free Software Foundation, Inc., 59 Temple Place,
   Suite 330, Boston, MA 02111-1307 USA.

   Please see libdfp/COPYING.txt for more information.  */

#include <sysdeps/powerpc/sysdep.h>

/* Taken from GLIBC in 2009.  */

#ifdef __ASSEMBLER__

#ifdef __ELF__

/* If compiled for profiling, call `_mcount' at the start of each
   function.  */
#ifdef      PROF
/* The mcount code relies on a the return address being on the stack
   to locate our caller and so it can restore it; so store one just
   for its benefit.  */
# define CALL_MCOUNT                                              \
  mflr  r0;                                                 \
  stw   r0,4(r1);                                           \
  cfi_offset (lr, 4);                                                   \
  bl    JUMPTARGET(_mcount);
#else  /* PROF */
# define CALL_MCOUNT          /* Do nothing.  */
#endif /* PROF */

#define     ENTRY(name)                                           \
  ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name);                             \
  ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function)                    \
  .align ALIGNARG(2);                                             \
  C_LABEL(name)                                                   \
  cfi_startproc;                                            \
  CALL_MCOUNT

#define EALIGN_W_0  /* No words to insert.  */
#define EALIGN_W_1  nop
#define EALIGN_W_2  nop;nop
#define EALIGN_W_3  nop;nop;nop
#define EALIGN_W_4  EALIGN_W_3;nop
#define EALIGN_W_5  EALIGN_W_4;nop
#define EALIGN_W_6  EALIGN_W_5;nop
#define EALIGN_W_7  EALIGN_W_6;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)                                                   \
  cfi_startproc;                                            \
  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)                                                   \
  cfi_startproc;
#endif

#undef      END
#define END(name)                                           \
  cfi_endproc;                                                    \
  ASM_SIZE_DIRECTIVE(name)

#define DO_CALL(syscall)                                                \
    li 0,syscall;                                             \
    sc

#undef JUMPTARGET
#ifdef PIC
# define JUMPTARGET(name) name##@plt
#else
# define JUMPTARGET(name) name
#endif

#if defined SHARED && defined DO_VERSIONING && defined PIC \
    && !defined NO_HIDDEN
# undef HIDDEN_JUMPTARGET
# define HIDDEN_JUMPTARGET(name) __GI_##name##@local
#endif

#define PSEUDO(name, syscall_name, args)                          \
  .section ".text";                                               \
  ENTRY (name)                                                    \
    DO_CALL (SYS_ify (syscall_name));

#define PSEUDO_RET                                                \
    bnslr+;                                                 \
    b __syscall_error@local
#define ret PSEUDO_RET

#undef      PSEUDO_END
#define     PSEUDO_END(name)                                      \
  END (name)

#define PSEUDO_NOERRNO(name, syscall_name, args)                        \
  .section ".text";                                               \
  ENTRY (name)                                                    \
    DO_CALL (SYS_ify (syscall_name));

#define PSEUDO_RET_NOERRNO                                        \
    blr
#define ret_NOERRNO PSEUDO_RET_NOERRNO

#undef      PSEUDO_END_NOERRNO
#define     PSEUDO_END_NOERRNO(name)                                    \
  END (name)

#define PSEUDO_ERRVAL(name, syscall_name, args)                         \
  .section ".text";                                               \
  ENTRY (name)                                                    \
    DO_CALL (SYS_ify (syscall_name));

#define PSEUDO_RET_ERRVAL                                         \
    blr
#define ret_ERRVAL PSEUDO_RET_ERRVAL

#undef      PSEUDO_END_ERRVAL
#define     PSEUDO_END_ERRVAL(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__ */

Generated by  Doxygen 1.6.0   Back to index