diff options
Diffstat (limited to 'arch/m32r/kernel/sys_m32r.c')
-rw-r--r-- | arch/m32r/kernel/sys_m32r.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c deleted file mode 100644 index 22a50fc49ab7..000000000000 --- a/arch/m32r/kernel/sys_m32r.c +++ /dev/null @@ -1,91 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * linux/arch/m32r/kernel/sys_m32r.c - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/M32R platform. - * - * Taken from i386 version. - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/smp.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/syscalls.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/utsname.h> -#include <linux/ipc.h> - -#include <linux/uaccess.h> -#include <asm/cachectl.h> -#include <asm/cacheflush.h> -#include <asm/syscall.h> -#include <asm/unistd.h> - -/* - * sys_tas() - test-and-set - */ -asmlinkage int sys_tas(int __user *addr) -{ - int oldval; - - if (!access_ok(VERIFY_WRITE, addr, sizeof (int))) - return -EFAULT; - - /* atomic operation: - * oldval = *addr; *addr = 1; - */ - __asm__ __volatile__ ( - DCACHE_CLEAR("%0", "r4", "%1") - " .fillinsn\n" - "1:\n" - " lock %0, @%1 -> unlock %2, @%1\n" - "2:\n" - /* NOTE: - * The m32r processor can accept interrupts only - * at the 32-bit instruction boundary. - * So, in the above code, the "unlock" instruction - * can be executed continuously after the "lock" - * instruction execution without any interruptions. - */ - ".section .fixup,\"ax\"\n" - " .balign 4\n" - "3: ldi %0, #%3\n" - " seth r14, #high(2b)\n" - " or3 r14, r14, #low(2b)\n" - " jmp r14\n" - ".previous\n" - ".section __ex_table,\"a\"\n" - " .balign 4\n" - " .long 1b,3b\n" - ".previous\n" - : "=&r" (oldval) - : "r" (addr), "r" (1), "i"(-EFAULT) - : "r14", "memory" -#ifdef CONFIG_CHIP_M32700_TS1 - , "r4" -#endif /* CONFIG_CHIP_M32700_TS1 */ - ); - - return oldval; -} - -asmlinkage int sys_cacheflush(void *addr, int bytes, int cache) -{ - /* This should flush more selectively ... */ - _flush_cache_all(); - return 0; -} - -asmlinkage int sys_cachectl(char *addr, int nbytes, int op) -{ - /* Not implemented yet. */ - return -ENOSYS; -} |