1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (C) 2015-2019 ARM Limited.
3 // Original author: Dave Martin <Dave.Martin@arm.com>
4 
5 #ifndef ASSEMBLER_H
6 #define ASSEMBLER_H
7 
8 .macro __for from:req, to:req
9 	.if (\from) == (\to)
10 		_for__body %\from
11 	.else
12 		__for \from, %(\from) + ((\to) - (\from)) / 2
13 		__for %(\from) + ((\to) - (\from)) / 2 + 1, \to
14 	.endif
15 .endm
16 
17 .macro _for var:req, from:req, to:req, insn:vararg
18 	.macro _for__body \var:req
19 		.noaltmacro
20 		\insn
21 		.altmacro
22 	.endm
23 
24 	.altmacro
25 	__for \from, \to
26 	.noaltmacro
27 
28 	.purgem _for__body
29 .endm
30 
31 .macro function name
32 	.macro endfunction
33 		.type \name, @function
34 		.purgem endfunction
35 	.endm
36 \name:
37 .endm
38 
39 .macro define_accessor name, num, insn
40 	.macro \name\()_entry n
41 		\insn \n, 1
42 		ret
43 	.endm
44 
45 function \name
46 	adr	x2, .L__accessor_tbl\@
47 	add	x2, x2, x0, lsl #3
48 	br	x2
49 
50 .L__accessor_tbl\@:
51 	_for x, 0, (\num) - 1, \name\()_entry \x
52 endfunction
53 
54 	.purgem \name\()_entry
55 .endm
56 
57 // Utility macro to print a literal string
58 // Clobbers x0-x4,x8
59 .macro puts string
60 	.pushsection .rodata.str1.1, "aMS", 1
61 .L__puts_literal\@: .string "\string"
62 	.popsection
63 
64 	ldr	x0, =.L__puts_literal\@
65 	bl	puts
66 .endm
67 
68 #endif /* ! ASSEMBLER_H */
69