From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/s390/include/asm/syscall.h | 100 +++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 kernel/arch/s390/include/asm/syscall.h (limited to 'kernel/arch/s390/include/asm/syscall.h') diff --git a/kernel/arch/s390/include/asm/syscall.h b/kernel/arch/s390/include/asm/syscall.h new file mode 100644 index 000000000..6ba0bf928 --- /dev/null +++ b/kernel/arch/s390/include/asm/syscall.h @@ -0,0 +1,100 @@ +/* + * Access to user system call parameters and results + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.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 only) + * as published by the Free Software Foundation. + */ + +#ifndef _ASM_SYSCALL_H +#define _ASM_SYSCALL_H 1 + +#include +#include +#include +#include + +/* + * The syscall table always contains 32 bit pointers since we know that the + * address of the function to be called is (way) below 4GB. So the "int" + * type here is what we want [need] for both 32 bit and 64 bit systems. + */ +extern const unsigned int sys_call_table[]; +extern const unsigned int sys_call_table_emu[]; + +static inline long syscall_get_nr(struct task_struct *task, + struct pt_regs *regs) +{ + return test_pt_regs_flag(regs, PIF_SYSCALL) ? + (regs->int_code & 0xffff) : -1; +} + +static inline void syscall_rollback(struct task_struct *task, + struct pt_regs *regs) +{ + regs->gprs[2] = regs->orig_gpr2; +} + +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return IS_ERR_VALUE(regs->gprs[2]) ? regs->gprs[2] : 0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->gprs[2]; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ + regs->gprs[2] = error ? 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 long mask = -1UL; + + BUG_ON(i + n > 6); +#ifdef CONFIG_COMPAT + if (test_tsk_thread_flag(task, TIF_31BIT)) + mask = 0xffffffff; +#endif + while (n-- > 0) + if (i + n > 0) + args[n] = regs->gprs[2 + i + n] & mask; + if (i == 0) + args[0] = regs->orig_gpr2 & mask; +} + +static inline void syscall_set_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + const unsigned long *args) +{ + BUG_ON(i + n > 6); + while (n-- > 0) + if (i + n > 0) + regs->gprs[2 + i + n] = args[n]; + if (i == 0) + regs->orig_gpr2 = args[0]; +} + +static inline int syscall_get_arch(void) +{ +#ifdef CONFIG_COMPAT + if (test_tsk_thread_flag(current, TIF_31BIT)) + return AUDIT_ARCH_S390; +#endif + return AUDIT_ARCH_S390X; +} +#endif /* _ASM_SYSCALL_H */ -- cgit 1.2.3-korg