1  /* Copyright (C) 2022-2023 Free Software Foundation, Inc.
       2     Contributed by Xiongchuan Tan <xc-tan@outlook.com>.
       3  
       4     This file is part of the GNU Transactional Memory Library (libitm).
       5  
       6     Libitm is free software; you can redistribute it and/or modify it
       7     under the terms of the GNU General Public License as published by
       8     the Free Software Foundation; either version 3 of the License, or
       9     (at your option) any later version.
      10  
      11     Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
      12     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      13     FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
      14     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 _RV_ASM_H
      26  #define _RV_ASM_H
      27  
      28  #ifdef __riscv_e
      29  #  error "rv32e and rv64e unsupported"
      30  #endif
      31  
      32  #if __riscv_xlen == 64
      33  #  define GPR_L ld
      34  #  define GPR_S sd
      35  #  define SZ_GPR 8
      36  #  define LEN_GPR 14
      37  #elif __riscv_xlen == 32
      38  #  define GPR_L lw
      39  #  define GPR_S sw
      40  #  define SZ_GPR 4
      41  #  define LEN_GPR 16 /* Extra padding to align the stack to 16 bytes */
      42  #else
      43  #  error Unsupported XLEN (must be 64-bit or 32-bit).
      44  #endif
      45  
      46  #if defined(__riscv_flen) && __riscv_flen == 64
      47  #  define FPR_L fld
      48  #  define FPR_S fsd
      49  #  define SZ_FPR 8
      50  #elif defined(__riscv_flen) && __riscv_flen == 32
      51  #  define FPR_L flw
      52  #  define FPR_S fsw
      53  #  define SZ_FPR 4
      54  #elif defined(__riscv_flen)
      55  #  error Q-extension unsupported
      56  #else
      57  #  define SZ_FPR 0
      58  #endif
      59  
      60  /* The size of gtm_jmpbuf */
      61  #define ADJ_STACK_SIZE (LEN_GPR*SZ_GPR+12*SZ_FPR)
      62  
      63  #endif  /* _RV_ASM_H */