sysdeps/nios2/sysdep.h

   1 /* Assembler macros for Nios II.
   2    Copyright (C) 2015-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <sysdeps/generic/sysdep.h>
  20
  21 #ifdef  __ASSEMBLER__
  22
  23 /* Syntactic details of assembler.  */
  24
  25 #define ASM_SIZE_DIRECTIVE(name) .size name,.-name
  26
  27 #define ENTRY(name)                                              \
  28   .globl C_SYMBOL_NAME(name);                                    \
  29   .type C_SYMBOL_NAME(name),%function;                           \
  30   C_LABEL(name)                                                  \
  31   cfi_startproc;                                                 \
  32   CALL_MCOUNT;
  33
  34 #undef  END
  35 #define END(name)                               \
  36   cfi_endproc;                                  \
  37   ASM_SIZE_DIRECTIVE(name)
  38
  39 #ifdef PROF
  40
  41 # ifdef __PIC__
  42 #  define CALL_MCOUNT                           \
  43   mov r8, ra;                                   \
  44   nextpc r2;                                    \
  45 1:                                              \
  46   movhi r3, %hiadj(_gp_got - 1b);               \
  47   addi r3, r3, %lo(_gp_got - 1b);               \
  48   add r2, r2, r3;                               \
  49   ldw r2, %call(_mcount)(r2);                   \
  50   callr r2;                                     \
  51   mov ra, r8;                                   \
  52   ret;
  53 # else
  54 #  define CALL_MCOUNT                           \
  55   mov r8, ra;                                   \
  56   call _mount;                                  \
  57   mov ra, r8;                                   \
  58   ret;
  59 # endif
  60
  61 #else
  62 # define CALL_MCOUNT            /* Do nothing.  */
  63 #endif
  64
  65 #endif  /* __ASSEMBLER__ */