| /* 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 */ |
