diff options
Diffstat (limited to 'include/asm-x86/syscall.h')
| -rw-r--r-- | include/asm-x86/syscall.h | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/include/asm-x86/syscall.h b/include/asm-x86/syscall.h deleted file mode 100644 index 04c47dc5597..00000000000 --- a/include/asm-x86/syscall.h +++ /dev/null @@ -1,211 +0,0 @@ -/* - * Access to user system call parameters and results - * - * Copyright (C) 2008 Red Hat, Inc. All rights reserved. - * - * 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_SYSCALL_H -#define _ASM_SYSCALL_H 1 - -#include <linux/sched.h> -#include <linux/err.h> - -static inline long syscall_get_nr(struct task_struct *task, - struct pt_regs *regs) -{ - /* - * We always sign-extend a -1 value being set here, - * so this is always either -1L or a syscall number. - */ - return regs->orig_ax; -} - -static inline void syscall_rollback(struct task_struct *task, - struct pt_regs *regs) -{ - regs->ax = regs->orig_ax; -} - -static inline long syscall_get_error(struct task_struct *task, - struct pt_regs *regs) -{ - unsigned long error = regs->ax; -#ifdef CONFIG_IA32_EMULATION - /* - * TS_COMPAT is set for 32-bit syscall entries and then - * remains set until we return to user mode. - */ - if (task_thread_info(task)->status & TS_COMPAT) - /* - * Sign-extend the value so (int)-EFOO becomes (long)-EFOO - * and will match correctly in comparisons. - */ - error = (long) (int) error; -#endif - return IS_ERR_VALUE(error) ? error : 0; -} - -static inline long syscall_get_return_value(struct task_struct *task, - struct pt_regs *regs) -{ - return regs->ax; -} - -static inline void syscall_set_return_value(struct task_struct *task, - struct pt_regs *regs, - int error, long val) -{ - regs->ax = (long) error ?: val; -} - -#ifdef CONFIG_X86_32 - -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->bx + 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->bx + i, args, n * sizeof(args[0])); -} - -#else /* CONFIG_X86_64 */ - -static inline void syscall_get_arguments(struct task_struct *task, - struct pt_regs *regs, - unsigned int i, unsigned int n, - unsigned long *args) -{ -# ifdef CONFIG_IA32_EMULATION - if (task_thread_info(task)->status & TS_COMPAT) - switch (i + n) { - case 6: - if (!n--) break; - *args++ = regs->bp; - case 5: - if (!n--) break; - *args++ = regs->di; - case 4: - if (!n--) break; - *args++ = regs->si; - case 3: - if (!n--) break; - *args++ = regs->dx; - case 2: - if (!n--) break; - *args++ = regs->cx; - case 1: - if (!n--) break; - *args++ = regs->bx; - case 0: - if (!n--) break; - default: - BUG(); - break; - } - else -# endif - switch (i + n) { - case 6: - if (!n--) break; - *args++ = regs->r9; - case 5: - if (!n--) break; - *args++ = regs->r8; - case 4: - if (!n--) break; - *args++ = regs->r10; - case 3: - if (!n--) break; - *args++ = regs->dx; - case 2: - if (!n--) break; - *args++ = regs->si; - case 1: - if (!n--) break; - *args++ = regs->di; - case 0: - 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) -{ -# ifdef CONFIG_IA32_EMULATION - if (task_thread_info(task)->status & TS_COMPAT) - switch (i + n) { - case 6: - if (!n--) break; - regs->bp = *args++; - case 5: - if (!n--) break; - regs->di = *args++; - case 4: - if (!n--) break; - regs->si = *args++; - case 3: - if (!n--) break; - regs->dx = *args++; - case 2: - if (!n--) break; - regs->cx = *args++; - case 1: - if (!n--) break; - regs->bx = *args++; - case 0: - if (!n--) break; - default: - BUG(); - } - else -# endif - switch (i + n) { - case 6: - if (!n--) break; - regs->r9 = *args++; - case 5: - if (!n--) break; - regs->r8 = *args++; - case 4: - if (!n--) break; - regs->r10 = *args++; - case 3: - if (!n--) break; - regs->dx = *args++; - case 2: - if (!n--) break; - regs->si = *args++; - case 1: - if (!n--) break; - regs->di = *args++; - case 0: - if (!n--) break; - default: - BUG(); - } -} - -#endif /* CONFIG_X86_32 */ - -#endif /* _ASM_SYSCALL_H */ |