blob: b8f90a44cea55f40b19aac95e92b883f085154fb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/* Miscellaneous macros.
Copyright (C) 2000-2019 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 */
|
