1  /* Definitions for option handling for ARM.
       2     Copyright (C) 1991-2023 Free Software Foundation, Inc.
       3  
       4     This file is part of GCC.
       5  
       6     GCC is free software; you can redistribute it and/or modify it
       7     under the terms of the GNU General Public License as published
       8     by the Free Software Foundation; either version 3, or (at your
       9     option) any later version.
      10  
      11     GCC is distributed in the hope that it will be useful, but WITHOUT
      12     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      13     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
      14     License for more details.
      15  
      16     Under Section 7 of GPL version 3, you are granted additional
      17     permissions described in the GCC Runtime Library Exception, version
      18     3.1, as published by the Free Software Foundation.
      19  
      20     You should have received a copy of the GNU General Public License and
      21     a copy of the GCC Runtime Library Exception along with this program;
      22     see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      23     <http://www.gnu.org/licenses/>.  */
      24  
      25  #ifndef ARM_OPTS_H
      26  #define ARM_OPTS_H
      27  
      28  #include "arm-flags.h"
      29  #include "arm-isa.h"
      30  #include "arm-cpu.h"
      31  
      32  /* Which __fp16 format to use.
      33     The enumeration values correspond to the numbering for the
      34     Tag_ABI_FP_16bit_format attribute.
      35   */
      36  enum arm_fp16_format_type
      37  {
      38    ARM_FP16_FORMAT_NONE = 0,
      39    ARM_FP16_FORMAT_IEEE = 1,
      40    ARM_FP16_FORMAT_ALTERNATIVE = 2
      41  };
      42  
      43  /* Which ABI to use.  */
      44  enum arm_abi_type
      45  {
      46    ARM_ABI_APCS,
      47    ARM_ABI_ATPCS,
      48    ARM_ABI_AAPCS,
      49    ARM_ABI_IWMMXT,
      50    ARM_ABI_AAPCS_LINUX
      51  };
      52  
      53  enum float_abi_type
      54  {
      55    ARM_FLOAT_ABI_SOFT,
      56    ARM_FLOAT_ABI_SOFTFP,
      57    ARM_FLOAT_ABI_HARD
      58  };
      59  
      60  /* Which thread pointer access sequence to use.  */
      61  enum arm_tp_type {
      62    TP_AUTO,
      63    TP_SOFT,
      64    TP_CP15
      65  };
      66  
      67  /* Which TLS scheme to use.  */
      68  enum arm_tls_type {
      69    TLS_GNU,
      70    TLS_GNU2
      71  };
      72  
      73  /* Where to get the canary for the stack protector.  */
      74  enum stack_protector_guard {
      75    SSP_TLSREG,                  /* per-thread canary in TLS register */
      76    SSP_GLOBAL                   /* global canary */
      77  };
      78  #endif