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-rw-r--r--arch/c6x/kernel/sys_c6x.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/c6x/kernel/sys_c6x.c b/arch/c6x/kernel/sys_c6x.c
new file mode 100644
index 00000000000..3e9bdfbee8a
--- /dev/null
+++ b/arch/c6x/kernel/sys_c6x.c
@@ -0,0 +1,74 @@
+/*
+ * Port on Texas Instruments TMS320C6x architecture
+ *
+ * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
+ * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/syscalls.h>
+#include <linux/uaccess.h>
+
+#include <asm/syscalls.h>
+
+#ifdef CONFIG_ACCESS_CHECK
+int _access_ok(unsigned long addr, unsigned long size)
+{
+ if (!size)
+ return 1;
+
+ if (!addr || addr > (0xffffffffUL - (size - 1)))
+ goto _bad_access;
+
+ if (segment_eq(get_fs(), KERNEL_DS))
+ return 1;
+
+ if (memory_start <= addr && (addr + size - 1) < memory_end)
+ return 1;
+
+_bad_access:
+ pr_debug("Bad access attempt: pid[%d] addr[%08lx] size[0x%lx]\n",
+ current->pid, addr, size);
+ return 0;
+}
+EXPORT_SYMBOL(_access_ok);
+#endif
+
+/* sys_cache_sync -- sync caches over given range */
+asmlinkage int sys_cache_sync(unsigned long s, unsigned long e)
+{
+ L1D_cache_block_writeback_invalidate(s, e);
+ L1P_cache_block_invalidate(s, e);
+
+ return 0;
+}
+
+/* Provide the actual syscall number to call mapping. */
+#undef __SYSCALL
+#define __SYSCALL(nr, call) [nr] = (call),
+
+/*
+ * Use trampolines
+ */
+#define sys_pread64 sys_pread_c6x
+#define sys_pwrite64 sys_pwrite_c6x
+#define sys_truncate64 sys_truncate64_c6x
+#define sys_ftruncate64 sys_ftruncate64_c6x
+#define sys_fadvise64 sys_fadvise64_c6x
+#define sys_fadvise64_64 sys_fadvise64_64_c6x
+#define sys_fallocate sys_fallocate_c6x
+
+/* Use sys_mmap_pgoff directly */
+#define sys_mmap2 sys_mmap_pgoff
+
+/*
+ * Note that we can't include <linux/unistd.h> here since the header
+ * guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well.
+ */
+void *sys_call_table[__NR_syscalls] = {
+ [0 ... __NR_syscalls-1] = sys_ni_syscall,
+#include <asm/unistd.h>
+};