include/asm/ia32.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _ASM_X86_IA32_H
0003 #define _ASM_X86_IA32_H
0004
0005
0006 #ifdef CONFIG_IA32_EMULATION
0007
0008 #include <linux/compat.h>
0009
0010 /*
0011  * 32 bit structures for IA32 support.
0012  */
0013
0014 #include <uapi/asm/sigcontext.h>
0015
0016 /* signal.h */
0017
0018 struct ucontext_ia32 {
0019     unsigned int      uc_flags;
0020     unsigned int      uc_link;
0021     compat_stack_t    uc_stack;
0022     struct sigcontext_32 uc_mcontext;
0023     compat_sigset_t   uc_sigmask;   /* mask last for extensibility */
0024 };
0025
0026 /* This matches struct stat64 in glibc2.2, hence the absolutely
0027  * insane amounts of padding around dev_t's.
0028  */
0029 struct stat64 {
0030     unsigned long long  st_dev;
0031     unsigned char       __pad0[4];
0032
0033 #define STAT64_HAS_BROKEN_ST_INO    1
0034     unsigned int        __st_ino;
0035
0036     unsigned int        st_mode;
0037     unsigned int        st_nlink;
0038
0039     unsigned int        st_uid;
0040     unsigned int        st_gid;
0041
0042     unsigned long long  st_rdev;
0043     unsigned char       __pad3[4];
0044
0045     long long       st_size;
0046     unsigned int        st_blksize;
0047
0048     long long       st_blocks;/* Number 512-byte blocks allocated */
0049
0050     unsigned        st_atime;
0051     unsigned        st_atime_nsec;
0052     unsigned        st_mtime;
0053     unsigned        st_mtime_nsec;
0054     unsigned        st_ctime;
0055     unsigned        st_ctime_nsec;
0056
0057     unsigned long long  st_ino;
0058 } __attribute__((packed));
0059
0060 #define IA32_STACK_TOP IA32_PAGE_OFFSET
0061
0062 #ifdef __KERNEL__
0063 struct linux_binprm;
0064 extern int ia32_setup_arg_pages(struct linux_binprm *bprm,
0065                 unsigned long stack_top, int exec_stack);
0066 struct mm_struct;
0067 extern void ia32_pick_mmap_layout(struct mm_struct *mm);
0068
0069 #endif
0070
0071 #endif /* CONFIG_IA32_EMULATION */
0072
0073 #endif /* _ASM_X86_IA32_H */