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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __SYSTEM_H__
#define __SYSTEM_H__
#include "sh7034.h"
#include "config.h"
#define FREQ CPU_FREQ
#define BAUDRATE 9600
#ifndef NULL
#define NULL ((void*)0)
#endif
#ifndef MIN
#define MIN(a, b) (((a)<(b))?(a):(b))
#endif
#ifndef MAX
#define MAX(a, b) (((a)>(b))?(a):(b))
#endif
#ifdef LITTLE_ENDIAN
#define SWAB16(x) (x)
#define SWAB32(x) (x)
#endif
#define nop \
asm volatile ("nop")
#define __set_mask_constant(mask,address) \
asm \
("or.b\t%0,@(r0,gbr)" \
: \
: /* %0 */ "I"((char)(mask)), \
/* %1 */ "z"(address-GBR))
#define __clear_mask_constant(mask,address) \
asm \
("and.b\t%0,@(r0,gbr)" \
: \
: /* %0 */ "I"((char)~(mask)), \
/* %1 */ "z"(address-GBR))
#define __toggle_mask_constant(mask,address) \
asm \
("xor.b\t%0,@(r0,gbr)" \
: \
: /* %0 */ "I"((char)(mask)), \
/* %1 */ "z"(address-GBR))
#define __test_mask_constant(mask,address) \
({ \
int result; \
asm \
("tst.b\t%1,@(r0,gbr)\n\tmovt\t%0" \
: "=r"(result) \
: "I"((char)(mask)),"z"(address-GBR)); \
result; \
})
#define __set_bit_constant(bit,address) \
asm \
("or.b\t%0,@(r0,gbr)" \
: \
: /* %0 */ "I"((char)(1<<(bit))), \
/* %1 */ "z"(address-GBR))
#define __clear_bit_constant(bit,address) \
asm \
("and.b\t%0,@(r0,gbr)" \
: \
: /* %0 */ "I"((char)~(1<<(bit))), \
/* %1 */ "z"(address-GBR))
#define __toggle_bit_constant(bit,address) \
asm \
("xor.b\t%0,@(r0,gbr)" \
: \
: /* %0 */ "I"((char)(1<<(bit))), \
/* %1 */ "z"(address-GBR))
#define __test_bit_constant(bit,address) \
({ \
int result; \
asm \
("tst.b\t%1,@(r0,gbr)\n\tmovt\t%0" \
: "=r"(result) \
: "I"((char)(1<<(bit))),"z"(address-GBR)); \
result; \
})
#define __set_mask(mask,address) /* FIXME */
#define __test_mask(mask,address) 0 /* FIXME */
#define __clear_mask(mask,address) /* FIXME */
#define __toggle_mask(mask,address) /* FIXME */
#define __set_bit(bit,address) /* FIXME */
#define __test_bit(bit,address) 0 /* FIXME */
#define __clear_bit(bit,address) /* FIXME */
#define __toggle_bit(bit,address) /* FIXME */
#define set_mask(mask,address) \
if (__builtin_constant_p (mask)) \
__set_mask_constant (mask,address); \
else \
__set_mask (mask,address)
#define clear_mask(mask,address) \
if (__builtin_constant_p (mask)) \
__clear_mask_constant (mask,address); \
else \
__clear_mask (mask,address)
#define toggle_mask(mask,address) \
if (__builtin_constant_p (mask)) \
__toggle_mask_constant (mask,address); \
else \
__toggle_mask (mask,address)
#define test_mask(mask,address) \
( \
(__builtin_constant_p (mask)) \
? (int)__test_mask_constant (mask,address) \
: (int)__test_mask (mask,address) \
)
#define set_bit(bit,address) \
if (__builtin_constant_p (bit)) \
__set_bit_constant (bit,address); \
else \
__set_bit (bit,address)
#define clear_bit(bit,address) \
if (__builtin_constant_p (bit)) \
__clear_bit_constant (bit,address); \
else \
__clear_bit (bit,address)
#define toggle_bit(bit,address) \
if (__builtin_constant_p (bit)) \
__toggle_bit_constant (bit,address); \
else \
__toggle_bit (bit,address)
#define test_bit(bit,address) \
( \
(__builtin_constant_p (bit)) \
? (int)__test_bit_constant (bit,address) \
: (int)__test_bit (bit,address) \
)
extern char __swap_bit[256];
#define swap_bit(byte) \
__swap_bit[byte]
#ifndef SIMULATOR
static inline short SWAB16(short value)
/*
result[15..8] = value[ 7..0];
result[ 7..0] = value[15..8];
*/
{
short result;
asm volatile ("swap.b\t%1,%0" : "=r"(result) : "r"(value));
return result;
}
static inline long SWAW32(long value)
/*
result[31..16] = value[15.. 0];
result[15.. 0] = value[31..16];
*/
{
long result;
asm volatile ("swap.w\t%1,%0" : "=r"(result) : "r"(value));
return result;
}
static inline long SWAB32(long value)
/*
result[31..24] = value[ 7.. 0];
result[23..16] = value[15.. 8];
result[15.. 8] = value[23..16];
result[ 7.. 0] = value[31..24];
*/
{
asm volatile ("swap.b\t%0,%0\n"
"swap.w\t%0,%0\n"
"swap.b\t%0,%0\n" : "+r"(value));
return value;
}
/* Test And Set - UNTESTED */
static inline int tas (volatile int *pointer)
{
int result;
asm volatile ("tas.b\t@%1;movt\t%0" : "=t"(result) : "r"((char *)pointer) : "memory");
return result;
}
static inline void sti (void)
{
asm volatile ("ldc\t%0,sr" : : "r"(0<<4));
}
static inline void cli (void)
{
asm volatile ("ldc\t%0,sr" : : "r"(15<<4));
}
/* Compare And Swap */
static inline int cas (volatile int *pointer,int requested_value,int new_value)
{
cli();
if (*pointer == requested_value)
{
*pointer = new_value;
sti ();
return 1;
}
sti ();
return 0;
}
static inline int cas2 (volatile int *pointer1,volatile int *pointer2,int requested_value1,int requested_value2,int new_value1,int new_value2)
{
cli();
if (*pointer1 == requested_value1 && *pointer2 == requested_value2)
{
*pointer1 = new_value1;
*pointer2 = new_value2;
sti ();
return 1;
}
sti ();
return 0;
}
#endif
extern void system_reboot (void);
extern void system_init(void);
#endif
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