ports/sysdeps/am33/sysdep.h

   1 /* Copyright 2001-2014 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.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <sysdeps/generic/sysdep.h>
  21
  22 #ifdef  __ASSEMBLER__
  23
  24 /* Syntactic details of assembler.  */
  25
  26 #ifdef HAVE_ELF
  27 /* For ELF we need the `.type' directive to make shared libs work right.  */
  28 #define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
  29 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
  30
  31 /* In ELF C symbols are asm symbols.  */
  32 #undef  NO_UNDERSCORES
  33 #define NO_UNDERSCORES
  34 #else
  35 #define ASM_TYPE_DIRECTIVE(name,type)   /* Nothing is specified.  */
  36 #define ASM_SIZE_DIRECTIVE(name)        /* Nothing is specified.  */
  37 #endif
  38
  39 /* Define an entry point visible from C.  */
  40 #define ENTRY(name)                                                           \
  41   ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name);                                   \
  42   ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function)                          \
  43   C_LABEL(name)                                                               \
  44   CALL_MCOUNT
  45
  46 #undef  END
  47 #define END(name)                                                             \
  48   ASM_SIZE_DIRECTIVE(name)                                                    \
  49
  50 /* If compiled for profiling, call `mcount' at the start of each function.  */
  51 #ifdef  PROF
  52 /* The mcount code relies on a normal frame pointer being on the stack
  53    to locate our caller, so push one just for its benefit.  */
  54 #define CALL_MCOUNT \
  55   movm [a3],(sp); mov sp,a3; add -12,sp; \
  56   call JUMPTARGET(mcount),[],0; add 12,sp; movm (sp),[a3];
  57 #else
  58 #define CALL_MCOUNT             /* Do nothing.  */
  59 #endif
  60
  61 #ifdef  NO_UNDERSCORES
  62 /* Since C identifiers are not normally prefixed with an underscore
  63    on this system, the asm identifier `syscall_error' intrudes on the
  64    C name space.  Make sure we use an innocuous name.  */
  65 #define syscall_error   __syscall_error
  66 #define mcount          _mcount
  67 #endif
  68
  69 #undef JUMPTARGET
  70 #ifdef PIC
  71 #define JUMPTARGET(name)        name##@PLT
  72 #else
  73 #define JUMPTARGET(name)        name
  74 #endif
  75
  76 /* Local label name for asm code. */
  77 #ifndef L
  78 #define L(name)         name
  79 #endif
  80
  81 #endif  /* __ASSEMBLER__ */