3 This file is part of the AVR-Crypto-Lib.
4 Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * File: avr-asm-macros.S
24 * License: GPLv3 or later
25 * Description: some macros which are quite usefull
29 //#ifndef AVR_ASM_MACROS__S__
30 //#define AVR_ASM_MACROS__S__
34 /*******************************************************************************
36 *******************************************************************************/
38 .macro push_ p1:req, p2:vararg
45 .macro pop_ p1:req, p2:vararg
52 .macro push_range from:req, to:req
55 push_range "(\from+1)",\to
59 .macro pop_range from:req, to:req
62 pop_range \from,"(\to-1)"
66 .macro stack_alloc size:req, reg1=r30, reg2=r31
67 in r0, _SFR_IO_ADDR(SREG)
68 in \reg1, _SFR_IO_ADDR(SPL)
69 in \reg2, _SFR_IO_ADDR(SPH)
72 out _SFR_IO_ADDR(SPH), \reg2
73 out _SFR_IO_ADDR(SREG), r0
74 out _SFR_IO_ADDR(SPL), \reg1
77 .macro stack_free size:req, reg1=r30, reg2=r31
78 in r0, _SFR_IO_ADDR(SREG)
79 in \reg1, _SFR_IO_ADDR(SPL)
80 in \reg2, _SFR_IO_ADDR(SPH)
83 out _SFR_IO_ADDR(SPH), \reg2
84 out _SFR_IO_ADDR(SREG), r0
85 out _SFR_IO_ADDR(SPL), \reg1
89 .macro stack_alloc_large size:req, reg1=r30, reg2=r31
90 in r0, _SFR_IO_ADDR(SREG)
91 in \reg1, _SFR_IO_ADDR(SPL)
92 in \reg2, _SFR_IO_ADDR(SPH)
93 subi \reg1, lo8(\size)
94 sbci \reg2, hi8(\size)
96 out _SFR_IO_ADDR(SPH), \reg2
97 out _SFR_IO_ADDR(SREG), r0
98 out _SFR_IO_ADDR(SPL), \reg1
101 .macro stack_free_large size:req, reg1=r30, reg2=r31
102 in r0, _SFR_IO_ADDR(SREG)
103 in \reg1, _SFR_IO_ADDR(SPL)
104 in \reg2, _SFR_IO_ADDR(SPH)
106 adiw \reg1, (\size-63)
108 out _SFR_IO_ADDR(SPH), \reg2
109 out _SFR_IO_ADDR(SREG), r0
110 out _SFR_IO_ADDR(SPL), \reg1
113 .macro stack_free_large2 size:req, reg1=r30, reg2=r31
114 in r0, _SFR_IO_ADDR(SREG)
115 in \reg1, _SFR_IO_ADDR(SPL)
116 in \reg2, _SFR_IO_ADDR(SPH)
119 adiw \reg1, (\size-63*2)
121 out _SFR_IO_ADDR(SPH), \reg2
122 out _SFR_IO_ADDR(SREG), r0
123 out _SFR_IO_ADDR(SPL), \reg1
126 .macro stack_free_large3 size:req, reg1=r30, reg2=r31
127 in r0, _SFR_IO_ADDR(SREG)
128 in \reg1, _SFR_IO_ADDR(SPL)
129 in \reg2, _SFR_IO_ADDR(SPH)
139 out _SFR_IO_ADDR(SPH), \reg2
140 out _SFR_IO_ADDR(SREG), r0
141 out _SFR_IO_ADDR(SPL), \reg1
145 /*******************************************************************************
146 * END of MACRO SECTION *
147 *******************************************************************************/
150 //#endif /* AVR_ASM_MACROS__S__ */