1/* Miscellaneous macros.
 2   Copyright (C) 2000-2025 Free Software Foundation, Inc.
 3   This file is part of the GNU C Library.
 4
 5   The GNU C Library is free software; you can redistribute it and/or
 6   modify it under the terms of the GNU Lesser General Public
 7   License as published by the Free Software Foundation; either
 8   version 2.1 of the License, or (at your option) any later version.
 9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library.  If not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#ifndef _SYS_ASM_H
20#define _SYS_ASM_H
21
22/* Macros to handle different pointer/register sizes for 32/64-bit code.  */
23#if __riscv_xlen == 64
24# define PTRLOG 3
25# define SZREG  8
26# define REG_S sd
27# define REG_L ld
28#elif __riscv_xlen == 32
29# define PTRLOG 2
30# define SZREG  4
31# define REG_S sw
32# define REG_L lw
33#else
34# error __riscv_xlen must equal 32 or 64
35#endif
36
37#if !defined __riscv_float_abi_soft
38/* For ABI uniformity, reserve 8 bytes for floats, even if double-precision
39   floating-point is not supported in hardware.  */
40# if defined __riscv_float_abi_double
41#  define FREG_L fld
42#  define FREG_S fsd
43#  define SZFREG 8
44# else
45#  error unsupported FLEN
46# endif
47#endif
48
49/* Declare leaf routine.  */
50#define	LEAF(symbol)				\
51		.globl	symbol;			\
52		.align	2;			\
53		.type	symbol,@function;	\
54symbol:						\
55		cfi_startproc;
56
57/* Mark end of function.  */
58#undef END
59#define END(function)				\
60		cfi_endproc;			\
61		.size	function,.-function
62
63/* Stack alignment.  */
64#define ALMASK	~15
65
66#endif /* sys/asm.h */