/* * Copyright Altera Corporation (C) <2014>. All rights reserved * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef __ASM_NIOS2_SYSCALL_H__ #define __ASM_NIOS2_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->r2; } static inline void syscall_rollback(struct task_struct *task, struct pt_regs *regs) { regs->r2 = regs->orig_r2; regs->r7 = regs->orig_r7; } static inline long syscall_get_error(struct task_struct *task, struct pt_regs *regs) { return regs->r7 ? regs->r2 : 0; } static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) { return regs->r2; } static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) { if (error) { /* error < 0, but nios2 uses > 0 return value */ regs->r2 = -error; regs->r7 = 1; } else { regs->r2 = val; regs->r7 = 0; } } 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); switch (i) { case 0: if (!n--) break; *args++ = regs->r4; case 1: if (!n--) break; *args++ = regs->r5; case 2: if (!n--) break; *args++ = regs->r6; case 3: if (!n--) break; *args++ = regs->r7; case 4: if (!n--) break; *args++ = regs->r8; case 5: if (!n--) break; *args++ = regs->r9; case 6: if (!n--) break; default: BUG(); } } 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); switch (i) { case 0: if (!n--) break; regs->r4 = *args++; case 1: if (!n--) break; regs->r5 = *args++; case 2: if (!n--) break; regs->r6 = *args++; case 3: if (!n--) break; regs->r7 = *args++; case 4: if (!n--) break; regs->r8 = *args++; case 5: if (!n--) break; regs->r9 = *args++; case 6: if (!n) break; default: BUG(); } } #endif
Name | Type | Size | Permission | Actions |
---|---|---|---|---|
Kbuild | File | 958 B | 0644 |
|
asm-macros.h | File | 6.71 KB | 0644 |
|
asm-offsets.h | File | 813 B | 0644 |
|
cache.h | File | 1.14 KB | 0644 |
|
cacheflush.h | File | 1.91 KB | 0644 |
|
checksum.h | File | 2.03 KB | 0644 |
|
cpuinfo.h | File | 1.42 KB | 0644 |
|
delay.h | File | 547 B | 0644 |
|
dma-mapping.h | File | 547 B | 0644 |
|
elf.h | File | 3.2 KB | 0644 |
|
entry.h | File | 2.6 KB | 0644 |
|
io.h | File | 1.72 KB | 0644 |
|
irq.h | File | 907 B | 0644 |
|
irqflags.h | File | 1.75 KB | 0644 |
|
kgdb.h | File | 1.88 KB | 0644 |
|
linkage.h | File | 809 B | 0644 |
|
mmu.h | File | 445 B | 0644 |
|
mmu_context.h | File | 1.69 KB | 0644 |
|
page.h | File | 3.08 KB | 0644 |
|
pgalloc.h | File | 1.86 KB | 0644 |
|
pgtable-bits.h | File | 1.05 KB | 0644 |
|
pgtable.h | File | 7.99 KB | 0644 |
|
processor.h | File | 2.18 KB | 0644 |
|
ptrace.h | File | 2.29 KB | 0644 |
|
registers.h | File | 2.15 KB | 0644 |
|
setup.h | File | 1.04 KB | 0644 |
|
shmparam.h | File | 804 B | 0644 |
|
string.h | File | 618 B | 0644 |
|
switch_to.h | File | 866 B | 0644 |
|
syscall.h | File | 2.6 KB | 0644 |
|
syscalls.h | File | 883 B | 0644 |
|
thread_info.h | File | 3.37 KB | 0644 |
|
timex.h | File | 912 B | 0644 |
|
tlb.h | File | 963 B | 0644 |
|
tlbflush.h | File | 1.56 KB | 0644 |
|
traps.h | File | 514 B | 0644 |
|
uaccess.h | File | 5.18 KB | 0644 |
|