1/* Miscellaneous macros.
2 Copyright (C) 2000-2026 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 */