52b2c101b9
Since32974ad490("[IA64] Remove COMPAT_IA32 support") IA32_STACK_TOP and ia32_setup_arg_pages() are not used anymore. And675a081360("x86: unify mmap_{32|64}.c") left behind ia32_pick_mmap_layout() extern declaration. Remove them all. [ bp: Massage commit message. ] Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230625125411.25840-1-yuehaibing@huawei.com
92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_IA32_H
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#define _ASM_X86_IA32_H
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#ifdef CONFIG_IA32_EMULATION
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#include <linux/compat.h>
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/*
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* 32 bit structures for IA32 support.
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*/
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#include <uapi/asm/sigcontext.h>
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/* signal.h */
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struct ucontext_ia32 {
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unsigned int uc_flags;
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unsigned int uc_link;
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compat_stack_t uc_stack;
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struct sigcontext_32 uc_mcontext;
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compat_sigset_t uc_sigmask; /* mask last for extensibility */
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};
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/* This matches struct stat64 in glibc2.2, hence the absolutely
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* insane amounts of padding around dev_t's.
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*/
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struct stat64 {
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unsigned long long st_dev;
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unsigned char __pad0[4];
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#define STAT64_HAS_BROKEN_ST_INO 1
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unsigned int __st_ino;
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unsigned int st_mode;
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unsigned int st_nlink;
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unsigned int st_uid;
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unsigned int st_gid;
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unsigned long long st_rdev;
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unsigned char __pad3[4];
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long long st_size;
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unsigned int st_blksize;
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long long st_blocks;/* Number 512-byte blocks allocated */
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unsigned st_atime;
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unsigned st_atime_nsec;
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unsigned st_mtime;
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unsigned st_mtime_nsec;
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unsigned st_ctime;
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unsigned st_ctime_nsec;
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unsigned long long st_ino;
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} __attribute__((packed));
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extern bool __ia32_enabled;
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static __always_inline bool ia32_enabled(void)
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{
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return __ia32_enabled;
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}
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static inline void ia32_disable(void)
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{
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__ia32_enabled = false;
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}
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#else /* !CONFIG_IA32_EMULATION */
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static __always_inline bool ia32_enabled(void)
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{
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return IS_ENABLED(CONFIG_X86_32);
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}
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static inline void ia32_disable(void) {}
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#endif
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static inline bool ia32_enabled_verbose(void)
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{
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bool enabled = ia32_enabled();
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if (IS_ENABLED(CONFIG_IA32_EMULATION) && !enabled)
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pr_notice_once("32-bit emulation disabled. You can reenable with ia32_emulation=on\n");
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return enabled;
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}
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#endif /* _ASM_X86_IA32_H */
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