1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * include/asm-nds32/macro.h
5 * Copyright (C) 2009 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
6 * Copyright (C) 2011 Andes Technology Corporation
7 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
10 #ifndef __ASM_NDS_MACRO_H
11 #define __ASM_NDS_MACRO_H
15 * These macros provide a convenient way to write 8, 16 and 32 bit data
16 * to an "immediate address (address used by periphal)" only.
17 * Registers r4 and r5 are used, any data in these registers are
18 * overwritten by the macros.
19 * The macros are valid for any NDS32 architecture, they do not implement
20 * any memory barriers so caution is recommended when using these when the
21 * caches are enabled or on a multi-core system.
24 .macro write32, addr, data
30 .macro write16, addr, data
36 .macro write8, addr, data
43 * This macro read a value from a register, then do OR operation
44 * (set bit fields) to the value, and then store it back to the register.
45 * Note: Instruction 'ori' supports immediate value up to 15 bits.
47 .macro setbf32, addr, data
55 .macro setbf15, addr, data
63 * This macro generates a loop that can be used for delays in the code.
64 * Register r4 is used, any data in this register is overwritten by the
66 * The macro is valid for any NDS32 architeture. The actual time spent in the
67 * loop will vary from CPU to CPU though.
70 .macro wait_timer, time
78 #endif /* __ASSEMBLY__ */
79 #endif /* __ASM_ARM_MACRO_H */