Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * linux/arch/unicore32/include/asm/assembler.h
4 *
5 * Code specific to PKUnity SoC and UniCore ISA
6 *
7 * Copyright (C) 2001-2010 GUAN Xue-tao
8 *
9 * Do not include any C declarations in this file - it is included by
10 * assembler source.
11 */
12#ifndef __ASSEMBLY__
13#error "Only include this from assembly code"
14#endif
15
16#include <asm/ptrace.h>
17
18/*
19 * Little Endian independent macros for shifting bytes within registers.
20 */
21#define pull >>
22#define push <<
23#define get_byte_0 << #0
24#define get_byte_1 >> #8
25#define get_byte_2 >> #16
26#define get_byte_3 >> #24
27#define put_byte_0 << #0
28#define put_byte_1 << #8
29#define put_byte_2 << #16
30#define put_byte_3 << #24
31
32#define cadd cmpadd
33#define cand cmpand
34#define csub cmpsub
35#define cxor cmpxor
36
37/*
38 * Enable and disable interrupts
39 */
40 .macro disable_irq, temp
41 mov \temp, asr
42 andn \temp, \temp, #0xFF
43 or \temp, \temp, #PSR_I_BIT | PRIV_MODE
44 mov.a asr, \temp
45 .endm
46
47 .macro enable_irq, temp
48 mov \temp, asr
49 andn \temp, \temp, #0xFF
50 or \temp, \temp, #PRIV_MODE
51 mov.a asr, \temp
52 .endm
53
54#define USER(x...) \
559999: x; \
56 .pushsection __ex_table, "a"; \
57 .align 3; \
58 .long 9999b, 9001f; \
59 .popsection
60
61 .macro notcond, cond, nexti = .+8
62 .ifc \cond, eq
63 bne \nexti
64 .else; .ifc \cond, ne
65 beq \nexti
66 .else; .ifc \cond, ea
67 bub \nexti
68 .else; .ifc \cond, ub
69 bea \nexti
70 .else; .ifc \cond, fs
71 bns \nexti
72 .else; .ifc \cond, ns
73 bfs \nexti
74 .else; .ifc \cond, fv
75 bnv \nexti
76 .else; .ifc \cond, nv
77 bfv \nexti
78 .else; .ifc \cond, ua
79 beb \nexti
80 .else; .ifc \cond, eb
81 bua \nexti
82 .else; .ifc \cond, eg
83 bsl \nexti
84 .else; .ifc \cond, sl
85 beg \nexti
86 .else; .ifc \cond, sg
87 bel \nexti
88 .else; .ifc \cond, el
89 bsg \nexti
90 .else; .ifnc \cond, al
91 .error "Unknown cond in notcond macro argument"
92 .endif; .endif; .endif; .endif; .endif; .endif; .endif
93 .endif; .endif; .endif; .endif; .endif; .endif; .endif
94 .endif
95 .endm
96
97 .macro usracc, instr, reg, ptr, inc, cond, rept, abort
98 .rept \rept
99 notcond \cond, .+8
1009999 :
101 .if \inc == 1
102 \instr\()b.u \reg, [\ptr], #\inc
103 .elseif \inc == 4
104 \instr\()w.u \reg, [\ptr], #\inc
105 .else
106 .error "Unsupported inc macro argument"
107 .endif
108
109 .pushsection __ex_table, "a"
110 .align 3
111 .long 9999b, \abort
112 .popsection
113 .endr
114 .endm
115
116 .macro strusr, reg, ptr, inc, cond = al, rept = 1, abort = 9001f
117 usracc st, \reg, \ptr, \inc, \cond, \rept, \abort
118 .endm
119
120 .macro ldrusr, reg, ptr, inc, cond = al, rept = 1, abort = 9001f
121 usracc ld, \reg, \ptr, \inc, \cond, \rept, \abort
122 .endm
123
124 .macro nop8
125 .rept 8
126 nop
127 .endr
128 .endm