/* * Access to user system call parameters and results * * See asm-generic/syscall.h for function descriptions. * * Copyright (C) 2015 Mickaël Salaün <mic@digikod.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __UM_SYSCALL_GENERIC_H #define __UM_SYSCALL_GENERIC_H #include <asm/ptrace.h> #include <linux/err.h> #include <linux/sched.h> #include <sysdep/ptrace.h> static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { return PT_REGS_SYSCALL_NR(regs); } 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) { const long error = regs_return_value(regs); return IS_ERR_VALUE(error) ? error : 0; } static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) { return regs_return_value(regs); } static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) { PT_REGS_SET_SYSCALL_RETURN(regs, (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) { const struct uml_pt_regs *r = ®s->regs; switch (i) { case 0: if (!n--) break; *args++ = UPT_SYSCALL_ARG1(r); case 1: if (!n--) break; *args++ = UPT_SYSCALL_ARG2(r); case 2: if (!n--) break; *args++ = UPT_SYSCALL_ARG3(r); case 3: if (!n--) break; *args++ = UPT_SYSCALL_ARG4(r); case 4: if (!n--) break; *args++ = UPT_SYSCALL_ARG5(r); case 5: if (!n--) break; *args++ = UPT_SYSCALL_ARG6(r); case 6: if (!n--) break; default: BUG(); break; } } static inline void syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, unsigned int i, unsigned int n, const unsigned long *args) { struct uml_pt_regs *r = ®s->regs; switch (i) { case 0: if (!n--) break; UPT_SYSCALL_ARG1(r) = *args++; case 1: if (!n--) break; UPT_SYSCALL_ARG2(r) = *args++; case 2: if (!n--) break; UPT_SYSCALL_ARG3(r) = *args++; case 3: if (!n--) break; UPT_SYSCALL_ARG4(r) = *args++; case 4: if (!n--) break; UPT_SYSCALL_ARG5(r) = *args++; case 5: if (!n--) break; UPT_SYSCALL_ARG6(r) = *args++; case 6: if (!n--) break; default: BUG(); break; } } /* See arch/x86/um/asm/syscall.h for syscall_get_arch() definition. */ #endif /* __UM_SYSCALL_GENERIC_H */
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a.out-core.h | File | 695 B | 0644 |
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bugs.h | File | 111 B | 0644 |
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cache.h | File | 483 B | 0644 |
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common.lds.S | File | 1.76 KB | 0644 |
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dma.h | File | 180 B | 0644 |
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fixmap.h | File | 1.63 KB | 0644 |
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hardirq.h | File | 558 B | 0644 |
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io.h | File | 339 B | 0644 |
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irq.h | File | 493 B | 0644 |
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irqflags.h | File | 865 B | 0644 |
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kmap_types.h | File | 219 B | 0644 |
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kvm_para.h | File | 34 B | 0644 |
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mmu.h | File | 558 B | 0644 |
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mmu_context.h | File | 1.87 KB | 0644 |
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page.h | File | 3.15 KB | 0644 |
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pgalloc.h | File | 1.46 KB | 0644 |
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pgtable-2level.h | File | 1.32 KB | 0644 |
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pgtable-3level.h | File | 2.88 KB | 0644 |
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pgtable.h | File | 9.88 KB | 0644 |
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processor-generic.h | File | 1.87 KB | 0644 |
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ptrace-generic.h | File | 1.13 KB | 0644 |
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sections.h | File | 219 B | 0644 |
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setup.h | File | 273 B | 0644 |
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smp.h | File | 121 B | 0644 |
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stacktrace.h | File | 1.06 KB | 0644 |
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syscall-generic.h | File | 2.67 KB | 0644 |
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sysrq.h | File | 182 B | 0644 |
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thread_info.h | File | 2.15 KB | 0644 |
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timex.h | File | 151 B | 0644 |
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tlb.h | File | 4.23 KB | 0644 |
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tlbflush.h | File | 978 B | 0644 |
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uaccess.h | File | 1.65 KB | 0644 |
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unwind.h | File | 213 B | 0644 |
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