diff options
Diffstat (limited to 'arch/metag/include/asm/syscall.h')
-rw-r--r-- | arch/metag/include/asm/syscall.h | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/arch/metag/include/asm/syscall.h b/arch/metag/include/asm/syscall.h deleted file mode 100644 index 24fc979..0000000 --- a/arch/metag/include/asm/syscall.h +++ /dev/null @@ -1,104 +0,0 @@ -/* - * Access to user system call parameters and results - * - * Copyright (C) 2008 Imagination Technologies Ltd. - * - * This copyrighted material is made available to anyone wishing to use, - * modify, copy, or redistribute it subject to the terms and conditions - * of the GNU General Public License v.2. - * - * See asm-generic/syscall.h for descriptions of what we must do here. - */ - -#ifndef _ASM_METAG_SYSCALL_H -#define _ASM_METAG_SYSCALL_H - -#include <linux/sched.h> -#include <linux/err.h> -#include <linux/uaccess.h> - -#include <asm/switch.h> - -static inline long syscall_get_nr(struct task_struct *task, - struct pt_regs *regs) -{ - unsigned long insn; - - /* - * FIXME there's no way to find out how we got here other than to - * examine the memory at the PC to see if it is a syscall - * SWITCH instruction. - */ - if (get_user(insn, (unsigned long *)(regs->ctx.CurrPC - 4))) - return -1; - - if (insn == __METAG_SW_ENCODING(SYS)) - return regs->ctx.DX[0].U1; - else - return -1L; -} - -static inline void syscall_rollback(struct task_struct *task, - struct pt_regs *regs) -{ - /* do nothing */ -} - -static inline long syscall_get_error(struct task_struct *task, - struct pt_regs *regs) -{ - unsigned long error = regs->ctx.DX[0].U0; - return IS_ERR_VALUE(error) ? error : 0; -} - -static inline long syscall_get_return_value(struct task_struct *task, - struct pt_regs *regs) -{ - return regs->ctx.DX[0].U0; -} - -static inline void syscall_set_return_value(struct task_struct *task, - struct pt_regs *regs, - int error, long val) -{ - regs->ctx.DX[0].U0 = (long) error ?: val; -} - -static inline void syscall_get_arguments(struct task_struct *task, - struct pt_regs *regs, - unsigned int i, unsigned int n, - unsigned long *args) -{ - unsigned int reg, j; - BUG_ON(i + n > 6); - - for (j = i, reg = 6 - i; j < (i + n); j++, reg--) { - if (reg % 2) - args[j] = regs->ctx.DX[(reg + 1) / 2].U0; - else - args[j] = regs->ctx.DX[reg / 2].U1; - } -} - -static inline void syscall_set_arguments(struct task_struct *task, - struct pt_regs *regs, - unsigned int i, unsigned int n, - const unsigned long *args) -{ - unsigned int reg; - BUG_ON(i + n > 6); - - for (reg = 6 - i; i < (i + n); i++, reg--) { - if (reg % 2) - regs->ctx.DX[(reg + 1) / 2].U0 = args[i]; - else - regs->ctx.DX[reg / 2].U1 = args[i]; - } -} - -#define NR_syscalls __NR_syscalls - -/* generic syscall table */ -extern const void *sys_call_table[]; - -#endif /* _ASM_METAG_SYSCALL_H */ |