4 * This file is part of BeRTOS.
6 * Bertos 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 2 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, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2004, 2005, 2006, 2007, 2008 Develer S.r.l. (http://www.develer.com/)
30 * Copyright 2004 Giovanni Bajo
34 * \brief CPU-specific attributes.
36 * \author Giovanni Bajo <rasky@develer.com>
37 * \author Bernie Innocenti <bernie@codewiz.org>
38 * \author Stefano Fedrigo <aleph@develer.com>
39 * \author Francesco Sacchi <batt@develer.com>
46 #include "cfg/cfg_attr.h" /* CONFIG_FAST_MEM */
50 * \name Macros for determining CPU endianness.
53 #define CPU_BIG_ENDIAN 0x1234
54 #define CPU_LITTLE_ENDIAN 0x3412 /* Look twice, pal. This is not a bug. */
57 /** Macro to include cpu-specific versions of the headers. */
58 #define CPU_HEADER(module) PP_STRINGIZE(drv/PP_CAT3(module, _, CPU_ID).h)
60 /** Macro to include cpu-specific versions of implementation files. */
61 #define CPU_CSOURCE(module) PP_STRINGIZE(drv/PP_CAT3(module, _, CPU_ID).c)
66 #define NOP nop_instruction()
68 #define CPU_REG_BITS 16
69 #define CPU_REGS_CNT 16
70 #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
73 /// Valid pointers should be >= than this value (used for debug)
74 #define CPU_RAM_START 0x100
78 #define NOP asm volatile ("nop")
80 #define CPU_REGS_CNT 7
81 #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
85 #define CPU_REG_BITS 64
88 /* WIN64 is an IL32-P64 weirdo. */
92 #define CPU_REG_BITS 32
95 /// Valid pointers should be >= than this value (used for debug)
96 #define CPU_RAM_START 0x1000
100 #define CPU_REG_BITS 32
101 #define CPU_REGS_CNT 16
102 #define CPU_HARVARD 0
104 /// Valid pointers should be >= than this value (used for debug)
105 #define CPU_RAM_START 0x200
107 #ifdef __IAR_SYSTEMS_ICC__
108 #warning Check CPU_BYTE_ORDER
109 #define CPU_BYTE_ORDER (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
111 #define NOP __no_operation()
113 #else /* GCC and compatibles */
115 #if defined(__ARMEB__)
116 #define CPU_BYTE_ORDER CPU_BIG_ENDIAN
117 #elif defined(__ARMEL__)
118 #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
120 #error Unable to detect ARM endianness!
123 #define NOP asm volatile ("mov r0,r0" ::)
127 * Function attribute for use with performance critical code.
129 * On the AT91 family, code residing in flash has wait states.
130 * Moving functions to the data section is a quick & dirty way
131 * to get them transparently copied to SRAM for zero-wait-state
134 #define FAST_FUNC __attribute__((section(".data")))
137 * Data attribute to move constant data to fast memory storage.
141 #define FAST_RODATA __attribute__((section(".data")))
143 #else // !CONFIG_FAST_MEM
144 #define FAST_RODATA /**/
145 #define FAST_FUNC /**/
149 * Function attribute to declare an interrupt service routine.
151 #define ISR_FUNC __attribute__((interrupt))
153 #endif /* !__IAR_SYSTEMS_ICC_ */
157 #define NOP asm volatile ("nop" ::)
159 #define CPU_REG_BITS (CPU_PPC32 ? 32 : 64)
160 #define CPU_REGS_CNT FIXME
161 #define CPU_BYTE_ORDER (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
162 #define CPU_HARVARD 0
164 /// Valid pointers should be >= than this value (used for debug)
165 #define CPU_RAM_START 0x1000
171 #define CPU_REG_BITS 16
172 #define CPU_REGS_CNT FIXME
173 #define CPU_BYTE_ORDER CPU_BIG_ENDIAN
174 #define CPU_HARVARD 1
176 /* Memory is word-addessed in the DSP56K */
177 #define CPU_BITS_PER_CHAR 16
178 #define SIZEOF_SHORT 1
180 #define SIZEOF_LONG 2
183 /// Valid pointers should be >= than this value (used for debug)
184 #define CPU_RAM_START 0x200
188 #define NOP asm volatile ("nop" ::)
190 #define CPU_REG_BITS 8
191 #define CPU_REGS_CNT 33 /* Includes SREG */
192 #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
193 #define CPU_HARVARD 1
195 /// Valid pointers should be >= than this value (used for debug)
196 #define CPU_RAM_START 0x100
199 #error No CPU_... defined.
203 /// Function attribute for use with performance critical code.
204 #define FAST_FUNC /* */
208 /// Data attribute to move constant data to fast memory storage.
209 #define FAST_RODATA /* */
212 #endif /* CPU_ATTR_H */