/* Miscellaneous macros. Copyright (C) 2000-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library. If not, see <http://www.gnu.org/licenses/>. */ #ifndef _SYS_ASM_H #define _SYS_ASM_H /* Macros to handle different pointer/register sizes for 32/64-bit code. */ #if __riscv_xlen == 64 # define PTRLOG 3 # define SZREG 8 # define REG_S sd # define REG_L ld #elif __riscv_xlen == 32 # error "rv32i-based targets are not supported" #else # error __riscv_xlen must equal 32 or 64 #endif #if !defined __riscv_float_abi_soft /* For ABI uniformity, reserve 8 bytes for floats, even if double-precision floating-point is not supported in hardware. */ # if defined __riscv_float_abi_double # define FREG_L fld # define FREG_S fsd # define SZFREG 8 # else # error unsupported FLEN # endif #endif /* Declare leaf routine. */ #define LEAF(symbol) \ .globl symbol; \ .align 2; \ .type symbol,@function; \ symbol: \ cfi_startproc; /* Mark end of function. */ #undef END #define END(function) \ cfi_endproc; \ .size function,.-function /* Stack alignment. */ #define ALMASK ~15 #endif /* sys/asm.h */