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usr
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src
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linux-headers-6.8.0-36
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arch
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x86
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include
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asm
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ia32.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_IA32_H #define _ASM_X86_IA32_H #ifdef CONFIG_IA32_EMULATION #include <linux/compat.h> /* * 32 bit structures for IA32 support. */ #include <uapi/asm/sigcontext.h> /* signal.h */ struct ucontext_ia32 { unsigned int uc_flags; unsigned int uc_link; compat_stack_t uc_stack; struct sigcontext_32 uc_mcontext; compat_sigset_t uc_sigmask; /* mask last for extensibility */ }; /* This matches struct stat64 in glibc2.2, hence the absolutely * insane amounts of padding around dev_t's. */ struct stat64 { unsigned long long st_dev; unsigned char __pad0[4]; #define STAT64_HAS_BROKEN_ST_INO 1 unsigned int __st_ino; unsigned int st_mode; unsigned int st_nlink; unsigned int st_uid; unsigned int st_gid; unsigned long long st_rdev; unsigned char __pad3[4]; long long st_size; unsigned int st_blksize; long long st_blocks;/* Number 512-byte blocks allocated */ unsigned st_atime; unsigned st_atime_nsec; unsigned st_mtime; unsigned st_mtime_nsec; unsigned st_ctime; unsigned st_ctime_nsec; unsigned long long st_ino; } __attribute__((packed)); #define IA32_STACK_TOP IA32_PAGE_OFFSET #ifdef __KERNEL__ struct linux_binprm; extern int ia32_setup_arg_pages(struct linux_binprm *bprm, unsigned long stack_top, int exec_stack); struct mm_struct; extern void ia32_pick_mmap_layout(struct mm_struct *mm); #endif extern bool __ia32_enabled; static inline bool ia32_enabled(void) { return __ia32_enabled; } static inline void ia32_disable(void) { __ia32_enabled = false; } #else /* !CONFIG_IA32_EMULATION */ static inline bool ia32_enabled(void) { return IS_ENABLED(CONFIG_X86_32); } static inline void ia32_disable(void) {} #endif static inline bool ia32_enabled_verbose(void) { bool enabled = ia32_enabled(); if (IS_ENABLED(CONFIG_IA32_EMULATION) && !enabled) pr_notice_once("32-bit emulation disabled. You can reenable with ia32_emulation=on\n"); return enabled; } #endif /* _ASM_X86_IA32_H */
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