libitm/config/riscv/asm.h

   1 /* Copyright (C) 2022-2024 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 */