2a12c4632d
The current kernel/traps.c file has grown a bit unwieldy as more debugging functionality has been added over time, so split it up into more logical files. There should be no functional changes here, just minor whitespace tweaking. This should make future extensions easier to manage. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
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* contains various random system calls that have a non-standard
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* calling sequence on the Linux/Blackfin platform.
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*
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* Copyright 2004-2009 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later
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*/
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#include <linux/spinlock.h>
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#include <linux/sem.h>
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#include <linux/msg.h>
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#include <linux/shm.h>
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#include <linux/syscalls.h>
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#include <linux/mman.h>
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#include <linux/file.h>
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#include <linux/fs.h>
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#include <linux/uaccess.h>
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#include <linux/ipc.h>
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#include <linux/unistd.h>
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#include <asm/cacheflush.h>
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#include <asm/dma.h>
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asmlinkage void *sys_sram_alloc(size_t size, unsigned long flags)
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{
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return sram_alloc_with_lsl(size, flags);
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}
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asmlinkage int sys_sram_free(const void *addr)
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{
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return sram_free_with_lsl(addr);
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}
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asmlinkage void *sys_dma_memcpy(void *dest, const void *src, size_t len)
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{
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return safe_dma_memcpy(dest, src, len);
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}
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#if defined(CONFIG_FB) || defined(CONFIG_FB_MODULE)
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#include <linux/fb.h>
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unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr,
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unsigned long len, unsigned long pgoff, unsigned long flags)
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{
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struct fb_info *info = filp->private_data;
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return (unsigned long)info->screen_base;
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}
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EXPORT_SYMBOL(get_fb_unmapped_area);
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#endif
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/* Needed for legacy userspace atomic emulation */
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static DEFINE_SPINLOCK(bfin_spinlock_lock);
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#ifdef CONFIG_SYS_BFIN_SPINLOCK_L1
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__attribute__((l1_text))
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#endif
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asmlinkage int sys_bfin_spinlock(int *p)
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{
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int ret, tmp = 0;
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spin_lock(&bfin_spinlock_lock); /* This would also hold kernel preemption. */
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ret = get_user(tmp, p);
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if (likely(ret == 0)) {
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if (unlikely(tmp))
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ret = 1;
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else
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put_user(1, p);
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}
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spin_unlock(&bfin_spinlock_lock);
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return ret;
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}
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