sysdeps/am33/sysdep.h

   1 /* Copyright 2001 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Alexandre Oliva <aoliva@redhat.com>.
   4    Based on ../i386/sysdep.h.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <sysdeps/generic/sysdep.h>
  22
  23 #ifdef  __ASSEMBLER__
  24
  25 /* Syntactic details of assembler.  */
  26
  27 #ifdef HAVE_ELF
  28 /* For ELF we need the `.type' directive to make shared libs work right.  */
  29 #define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
  30 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
  31
  32 /* In ELF C symbols are asm symbols.  */
  33 #undef  NO_UNDERSCORES
  34 #define NO_UNDERSCORES
  35 #else
  36 #define ASM_TYPE_DIRECTIVE(name,type)   /* Nothing is specified.  */
  37 #define ASM_SIZE_DIRECTIVE(name)        /* Nothing is specified.  */
  38 #endif
  39
  40 /* Define an entry point visible from C.  */
  41 #define ENTRY(name)                                                           \
  42   ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name);                                   \
  43   ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function)                          \
  44   C_LABEL(name)                                                               \
  45   CALL_MCOUNT
  46
  47 #undef  END
  48 #define END(name)                                                             \
  49   ASM_SIZE_DIRECTIVE(name)                                                    \
  50
  51 /* If compiled for profiling, call `mcount' at the start of each function.  */
  52 #ifdef  PROF
  53 /* The mcount code relies on a normal frame pointer being on the stack
  54    to locate our caller, so push one just for its benefit.  */
  55 #define CALL_MCOUNT \
  56   movm [a3],(sp); mov sp,a3; add -12,sp; \
  57   call JUMPTARGET(mcount),[],0; add 12,sp; movm (sp),[a3];
  58 #else
  59 #define CALL_MCOUNT             /* Do nothing.  */
  60 #endif
  61
  62 #ifdef  NO_UNDERSCORES
  63 /* Since C identifiers are not normally prefixed with an underscore
  64    on this system, the asm identifier `syscall_error' intrudes on the
  65    C name space.  Make sure we use an innocuous name.  */
  66 #define syscall_error   __syscall_error
  67 #define mcount          _mcount
  68 #endif
  69
  70 #undef JUMPTARGET
  71 #ifdef PIC
  72 #define JUMPTARGET(name)        name##@PLT
  73 #else
  74 #define JUMPTARGET(name)        name
  75 #endif
  76
  77 /* Local label name for asm code. */
  78 #ifndef L
  79 #define L(name)         name
  80 #endif
  81
  82 #endif  /* __ASSEMBLER__ */