diff options
| -rw-r--r-- | arch/openrisc/include/asm/syscall.h | 77 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/syscalls.h | 27 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/unistd.h | 31 | ||||
| -rw-r--r-- | arch/openrisc/kernel/sys_call_table.c | 28 | ||||
| -rw-r--r-- | arch/openrisc/kernel/sys_or32.c | 57 |
5 files changed, 220 insertions, 0 deletions
diff --git a/arch/openrisc/include/asm/syscall.h b/arch/openrisc/include/asm/syscall.h new file mode 100644 index 0000000..9f03370 --- /dev/null +++ b/arch/openrisc/include/asm/syscall.h @@ -0,0 +1,77 @@ +/* + * OpenRISC Linux + * + * Linux architectural port borrowing liberally from similar works of + * others. All original copyrights apply as per the original source + * declaration. + * + * OpenRISC implementation: + * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + * et al. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __ASM_OPENRISC_SYSCALL_H__ +#define __ASM_OPENRISC_SYSCALL_H__ + +#include <linux/err.h> +#include <linux/sched.h> + +static inline int +syscall_get_nr(struct task_struct *task, struct pt_regs *regs) +{ + return regs->syscallno ? regs->syscallno : -1; +} + +static inline void +syscall_rollback(struct task_struct *task, struct pt_regs *regs) +{ + regs->gpr[11] = regs->orig_gpr11; +} + +static inline long +syscall_get_error(struct task_struct *task, struct pt_regs *regs) +{ + return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0; +} + +static inline long +syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) +{ + return regs->gpr[11]; +} + +static inline void +syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, + int error, long val) +{ + if (error) + regs->gpr[11] = -error; + else + regs->gpr[11] = val; +} + +static inline void +syscall_get_arguments(struct task_struct *task, struct pt_regs *regs, + unsigned int i, unsigned int n, unsigned long *args) +{ + BUG_ON(i + n > 6); + + memcpy(args, ®s->gpr[3 + i], n * sizeof(args[0])); +} + +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); + + memcpy(®s->gpr[3 + i], args, n * sizeof(args[0])); +} + +#endif diff --git a/arch/openrisc/include/asm/syscalls.h b/arch/openrisc/include/asm/syscalls.h new file mode 100644 index 0000000..84a978a --- /dev/null +++ b/arch/openrisc/include/asm/syscalls.h @@ -0,0 +1,27 @@ +/* + * OpenRISC Linux + * + * Linux architectural port borrowing liberally from similar works of + * others. All original copyrights apply as per the original source + * declaration. + * + * OpenRISC implementation: + * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + * et al. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __ASM_OPENRISC_SYSCALLS_H +#define __ASM_OPENRISC_SYSCALLS_H + +asmlinkage long sys_or1k_atomic(unsigned long type, unsigned long *v1, + unsigned long *v2); + +#include <asm-generic/syscalls.h> + +#endif /* __ASM_OPENRISC_SYSCALLS_H */ diff --git a/arch/openrisc/include/asm/unistd.h b/arch/openrisc/include/asm/unistd.h new file mode 100644 index 0000000..89af3ab --- /dev/null +++ b/arch/openrisc/include/asm/unistd.h @@ -0,0 +1,31 @@ +/* + * OpenRISC Linux + * + * Linux architectural port borrowing liberally from similar works of + * others. All original copyrights apply as per the original source + * declaration. + * + * OpenRISC implementation: + * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + * et al. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL) +#define __ASM_OPENRISC_UNISTD_H + +#define __ARCH_HAVE_MMU + +#define sys_mmap2 sys_mmap_pgoff + +#include <asm-generic/unistd.h> + +#define __NR_or1k_atomic __NR_arch_specific_syscall +__SYSCALL(__NR_or1k_atomic, sys_or1k_atomic) + +#endif /* __ASM_OPENRISC_UNISTD_H */ diff --git a/arch/openrisc/kernel/sys_call_table.c b/arch/openrisc/kernel/sys_call_table.c new file mode 100644 index 0000000..e1f8ce8 --- /dev/null +++ b/arch/openrisc/kernel/sys_call_table.c @@ -0,0 +1,28 @@ +/* + * OpenRISC sys_call_table.c + * + * Linux architectural port borrowing liberally from similar works of + * others. All original copyrights apply as per the original source + * declaration. + * + * Modifications for the OpenRISC architecture: + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/syscalls.h> +#include <linux/signal.h> +#include <linux/unistd.h> + +#include <asm/syscalls.h> + +#undef __SYSCALL +#define __SYSCALL(nr, call) [nr] = (call), + +void *sys_call_table[__NR_syscalls] = { +#include <asm/unistd.h> +}; diff --git a/arch/openrisc/kernel/sys_or32.c b/arch/openrisc/kernel/sys_or32.c new file mode 100644 index 0000000..5706008 --- /dev/null +++ b/arch/openrisc/kernel/sys_or32.c @@ -0,0 +1,57 @@ +/* + * OpenRISC sys_or32.c + * + * Linux architectural port borrowing liberally from similar works of + * others. All original copyrights apply as per the original source + * declaration. + * + * Modifications for the OpenRISC architecture: + * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * This file contains various random system calls that + * have a non-standard calling sequence on some platforms. + * Since we don't have to do any backwards compatibility, our + * versions are done in the most "normal" way possible. + */ + +#include <linux/errno.h> +#include <linux/syscalls.h> +#include <linux/mm.h> + +#include <asm/syscalls.h> + +/* These are secondary entry points as the primary entry points are defined in + * entry.S where we add the 'regs' parameter value + */ + +asmlinkage long _sys_clone(unsigned long clone_flags, unsigned long newsp, + int __user *parent_tid, int __user *child_tid, + struct pt_regs *regs) +{ + long ret; + + /* FIXME: Is alignment necessary? */ + /* newsp = ALIGN(newsp, 4); */ + + if (!newsp) + newsp = regs->sp; + + ret = do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); + + return ret; +} + +asmlinkage int _sys_fork(struct pt_regs *regs) +{ +#ifdef CONFIG_MMU + return do_fork(SIGCHLD, regs->sp, regs, 0, NULL, NULL); +#else + return -EINVAL; +#endif +} |
