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
45function \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
52endfunction
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", @progbits, 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 */