dd5dd8cfd9
The old cache coherency function names where wrong and misleading. The new names are (purposely different from vendor manuals) * commit_* (write-back only) * discard_* (removing lines from cache only) * commit_discard_* (write-back and removing lines from cache) It's suspected the old names have led to wrong uses. The old names still exist (as aliases) so every call via the old names need to be double checked and changed to the new name. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28045 a1c6a512-1295-4272-9138-f99709370657
370 lines
10 KiB
C
370 lines
10 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 by Alan Korr
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __SYSTEM_H__
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#define __SYSTEM_H__
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#include "cpu.h"
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#include "stdbool.h"
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#include "kernel.h"
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#include "gcc_extensions.h" /* for LIKELY/UNLIKELY */
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extern void system_reboot (void);
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/* Called from any UIE handler and panicf - wait for a key and return
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* to reboot system. */
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extern void system_exception_wait(void);
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extern void system_init(void);
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extern long cpu_frequency;
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struct flash_header {
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unsigned long magic;
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unsigned long length;
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char version[32];
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};
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bool detect_flashed_romimage(void);
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bool detect_flashed_ramimage(void);
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bool detect_original_firmware(void);
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#if defined(HAVE_ADJUSTABLE_CPU_FREQ) \
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&& defined(ROCKBOX_HAS_LOGF) && (NUM_CORES == 1)
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#define CPU_BOOST_LOGGING
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#endif
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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#if NUM_CORES > 1
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extern struct spinlock boostctrl_spin;
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#endif
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void cpu_boost_init(void);
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#define FREQ cpu_frequency
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void set_cpu_frequency(long frequency);
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#ifdef CPU_BOOST_LOGGING
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char * cpu_boost_log_getlog_first(void);
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char * cpu_boost_log_getlog_next(void);
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int cpu_boost_log_getcount(void);
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void cpu_boost_(bool on_off, char* location, int line);
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#else
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void cpu_boost(bool on_off);
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#endif
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void cpu_idle_mode(bool on_off);
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int get_cpu_boost_counter(void);
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#else /* ndef HAVE_ADJUSTABLE_CPU_FREQ */
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#ifndef FREQ
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#define FREQ CPU_FREQ
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#endif
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#define set_cpu_frequency(frequency)
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#define cpu_boost(on_off)
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#define cpu_boost_id(on_off, id)
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#define cpu_idle_mode(on_off)
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#define get_cpu_boost_counter()
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#define get_cpu_boost_tracker()
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#endif /* HAVE_ADJUSTABLE_CPU_FREQ */
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#ifdef CPU_BOOST_LOGGING
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#define cpu_boost(on_off) cpu_boost_(on_off,__FILE__, __LINE__)
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#endif
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#define BAUDRATE 9600
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#ifndef NULL
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#define NULL ((void*)0)
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#endif
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#ifndef MIN
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#define MIN(a, b) (((a)<(b))?(a):(b))
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#endif
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#ifndef MAX
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#define MAX(a, b) (((a)>(b))?(a):(b))
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#endif
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/* return number of elements in array a */
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#define ARRAYLEN(a) (sizeof(a)/sizeof((a)[0]))
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/* return p incremented by specified number of bytes */
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#define SKIPBYTES(p, count) ((typeof (p))((char *)(p) + (count)))
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#define P2_M1(p2) ((1 << (p2))-1)
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/* align up or down to nearest 2^p2 */
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#define ALIGN_DOWN_P2(n, p2) ((n) & ~P2_M1(p2))
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#define ALIGN_UP_P2(n, p2) ALIGN_DOWN_P2((n) + P2_M1(p2),p2)
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/* align up or down to nearest integer multiple of a */
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#define ALIGN_DOWN(n, a) ((n)/(a)*(a))
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#define ALIGN_UP(n, a) ALIGN_DOWN((n)+((a)-1),a)
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/* align start and end of buffer to nearest integer multiple of a */
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#define ALIGN_BUFFER(ptr,len,align) \
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{\
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uintptr_t tmp_ptr1 = (uintptr_t)ptr; \
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uintptr_t tmp_ptr2 = tmp_ptr1 + len;\
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tmp_ptr1 = ALIGN_UP(tmp_ptr1,align); \
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tmp_ptr2 = ALIGN_DOWN(tmp_ptr2,align); \
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len = tmp_ptr2 - tmp_ptr1; \
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ptr = (typeof(ptr))tmp_ptr1; \
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}
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/* newer? SDL includes endian.h, So we ignore it */
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#if (CONFIG_PLATFORM & PLATFORM_HOSTED) || defined(__PCTOOL__)
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#undef letoh16
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#undef letoh32
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#undef htole16
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#undef htole32
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#undef betoh16
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#undef betoh32
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#undef htobe16
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#undef htobe32
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#endif
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/* live endianness conversion */
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#ifdef ROCKBOX_LITTLE_ENDIAN
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#define letoh16(x) (x)
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#define letoh32(x) (x)
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#define htole16(x) (x)
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#define htole32(x) (x)
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#define betoh16(x) swap16(x)
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#define betoh32(x) swap32(x)
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#define htobe16(x) swap16(x)
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#define htobe32(x) swap32(x)
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#define swap_odd_even_be32(x) (x)
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#define swap_odd_even_le32(x) swap_odd_even32(x)
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#else
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#define letoh16(x) swap16(x)
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#define letoh32(x) swap32(x)
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#define htole16(x) swap16(x)
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#define htole32(x) swap32(x)
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#define betoh16(x) (x)
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#define betoh32(x) (x)
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#define htobe16(x) (x)
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#define htobe32(x) (x)
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#define swap_odd_even_be32(x) swap_odd_even32(x)
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#define swap_odd_even_le32(x) (x)
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#endif
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/* static endianness conversion */
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#define SWAP_16(x) ((typeof(x))(unsigned short)(((unsigned short)(x) >> 8) | \
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((unsigned short)(x) << 8)))
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#define SWAP_32(x) ((typeof(x))(unsigned long)( ((unsigned long)(x) >> 24) | \
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(((unsigned long)(x) & 0xff0000ul) >> 8) | \
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(((unsigned long)(x) & 0xff00ul) << 8) | \
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((unsigned long)(x) << 24)))
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#ifdef ROCKBOX_LITTLE_ENDIAN
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#define LE_TO_H16(x) (x)
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#define LE_TO_H32(x) (x)
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#define H_TO_LE16(x) (x)
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#define H_TO_LE32(x) (x)
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#define BE_TO_H16(x) SWAP_16(x)
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#define BE_TO_H32(x) SWAP_32(x)
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#define H_TO_BE16(x) SWAP_16(x)
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#define H_TO_BE32(x) SWAP_32(x)
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#else
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#define LE_TO_H16(x) SWAP_16(x)
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#define LE_TO_H32(x) SWAP_32(x)
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#define H_TO_LE16(x) SWAP_16(x)
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#define H_TO_LE32(x) SWAP_32(x)
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#define BE_TO_H16(x) (x)
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#define BE_TO_H32(x) (x)
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#define H_TO_BE16(x) (x)
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#define H_TO_BE32(x) (x)
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#endif
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/* Get the byte offset of a type's member */
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#define OFFSETOF(type, membername) ((off_t)&((type *)0)->membername)
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/* Get the type pointer from one of its members */
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#define TYPE_FROM_MEMBER(type, memberptr, membername) \
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((type *)((intptr_t)(memberptr) - OFFSETOF(type, membername)))
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/* returns index of first set bit or 32 if no bits are set */
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int find_first_set_bit(uint32_t val);
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static inline __attribute__((always_inline))
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uint32_t isolate_first_bit(uint32_t val)
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{ return val & -val; }
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/* Functions to set and clear register or variable bits atomically */
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void bitmod32(volatile uint32_t *addr, uint32_t bits, uint32_t mask);
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void bitset32(volatile uint32_t *addr, uint32_t mask);
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void bitclr32(volatile uint32_t *addr, uint32_t mask);
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/* gcc 3.4 changed the format of the constraints */
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#if (__GNUC__ >= 3) && (__GNUC_MINOR__ > 3) || (__GNUC__ >= 4)
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#define I_CONSTRAINT "I08"
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#else
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#define I_CONSTRAINT "I"
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#endif
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/* Utilize the user break controller to catch invalid memory accesses. */
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int system_memory_guard(int newmode);
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enum {
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MEMGUARD_KEEP = -1, /* don't change the mode; for reading */
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MEMGUARD_NONE = 0, /* catch nothing */
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MEMGUARD_FLASH_WRITES, /* catch writes to area 02 (flash ROM) */
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MEMGUARD_ZERO_AREA, /* catch all accesses to areas 00 and 01 */
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MAXMEMGUARD
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};
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#if !defined(SIMULATOR) && !defined(__PCTOOL__)
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#include "system-target.h"
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#elif defined(HAVE_SDL) /* SDL build */
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#include "system-sdl.h"
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#define NEED_GENERIC_BYTESWAPS
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#endif
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#ifdef NEED_GENERIC_BYTESWAPS
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static inline uint16_t swap16(uint16_t value)
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/*
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result[15..8] = value[ 7..0];
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result[ 7..0] = value[15..8];
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*/
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{
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return (value >> 8) | (value << 8);
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}
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static inline uint32_t swap32(uint32_t value)
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/*
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result[31..24] = value[ 7.. 0];
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result[23..16] = value[15.. 8];
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result[15.. 8] = value[23..16];
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result[ 7.. 0] = value[31..24];
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*/
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{
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uint32_t hi = swap16(value >> 16);
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uint32_t lo = swap16(value & 0xffff);
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return (lo << 16) | hi;
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}
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static inline uint32_t swap_odd_even32(uint32_t value)
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{
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/*
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result[31..24],[15.. 8] = value[23..16],[ 7.. 0]
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result[23..16],[ 7.. 0] = value[31..24],[15.. 8]
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*/
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uint32_t t = value & 0xff00ff00;
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return (t >> 8) | ((t ^ value) << 8);
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}
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#endif /* NEED_GENERIC_BYTESWAPS */
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#ifndef BIT_N
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#define BIT_N(n) (1U << (n))
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#endif
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/* Declare this as HIGHEST_IRQ_LEVEL if they don't differ */
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#ifndef DISABLE_INTERRUPTS
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#define DISABLE_INTERRUPTS HIGHEST_IRQ_LEVEL
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#endif
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/* Just define these as empty if not declared */
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#ifdef HAVE_CPUCACHE_INVALIDATE
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void cpucache_commit_discard(void);
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/* deprecated alias */
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void cpucache_invalidate(void);
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#else
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static inline void cpucache_commit_discard(void)
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{
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}
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/* deprecated alias */
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static inline void cpucache_invalidate(void)
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{
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}
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#endif
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#ifdef HAVE_CPUCACHE_FLUSH
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void cpucache_commit(void);
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/* deprecated alias */
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void cpucache_flush(void);
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#else
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static inline void cpucache_commit(void)
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{
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}
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/* deprecated alias */
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static inline void cpucache_flush(void)
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{
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}
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#endif
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#ifndef CACHEALIGN_SIZE /* could be elsewhere for a particular reason */
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#ifdef CACHEALIGN_BITS
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/* 2^CACHEALIGN_BITS = the byte size */
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#define CACHEALIGN_SIZE (1u << CACHEALIGN_BITS)
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#else
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#define CACHEALIGN_SIZE 16 /* FIXME */
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#endif
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#endif /* CACHEALIGN_SIZE */
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#ifdef PROC_NEEDS_CACHEALIGN
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/* Cache alignment attributes and sizes are enabled */
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#define CACHEALIGN_ATTR __attribute__((aligned(CACHEALIGN_SIZE)))
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/* Aligns x up to a CACHEALIGN_SIZE boundary */
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#define CACHEALIGN_UP(x) \
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((typeof (x))ALIGN_UP_P2((uintptr_t)(x), CACHEALIGN_BITS))
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/* Aligns x down to a CACHEALIGN_SIZE boundary */
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#define CACHEALIGN_DOWN(x) \
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((typeof (x))ALIGN_DOWN_P2((uintptr_t)(x), CACHEALIGN_BITS))
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/* Aligns at least to the greater of size x or CACHEALIGN_SIZE */
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#define CACHEALIGN_AT_LEAST_ATTR(x) \
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__attribute__((aligned(CACHEALIGN_UP(x))))
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/* Aligns a buffer pointer and size to proper boundaries */
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#define CACHEALIGN_BUFFER(start, size) \
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ALIGN_BUFFER((start), (size), CACHEALIGN_SIZE)
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#else /* ndef PROC_NEEDS_CACHEALIGN */
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/* Cache alignment attributes and sizes are not enabled */
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#define CACHEALIGN_ATTR
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#define CACHEALIGN_AT_LEAST_ATTR(x) \
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__attribute__((aligned(x)))
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#define CACHEALIGN_UP(x) (x)
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#define CACHEALIGN_DOWN(x) (x)
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/* Make no adjustments */
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#define CACHEALIGN_BUFFER(start, size)
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#endif /* PROC_NEEDS_CACHEALIGN */
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#ifdef STORAGE_WANTS_ALIGN
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#define STORAGE_ALIGN_ATTR __attribute__((aligned(CACHEALIGN_SIZE)))
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#define STORAGE_ALIGN_DOWN(x) \
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((typeof (x))ALIGN_DOWN_P2((uintptr_t)(x), CACHEALIGN_BITS))
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/* Pad a size so the buffer can be aligned later */
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#define STORAGE_PAD(x) ((x) + CACHEALIGN_SIZE - 1)
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/* Number of bytes in the last cacheline assuming buffer of size x is aligned */
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#define STORAGE_OVERLAP(x) ((x) & (CACHEALIGN_SIZE - 1))
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#else
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#define STORAGE_ALIGN_ATTR
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#define STORAGE_ALIGN_DOWN(x) (x)
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#define STORAGE_PAD(x) (x)
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#define STORAGE_OVERLAP(x) 0
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#endif
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/* Double-cast to avoid 'dereferencing type-punned pointer will
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* break strict aliasing rules' B.S. */
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#define PUN_PTR(type, p) ((type)(intptr_t)(p))
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#endif /* __SYSTEM_H__ */
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