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-rw-r--r--arch/x86/include/asm/compat.h114
1 files changed, 114 insertions, 0 deletions
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
new file mode 100644
index 0000000000..b1221da477
--- /dev/null
+++ b/arch/x86/include/asm/compat.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_X86_COMPAT_H
+#define _ASM_X86_COMPAT_H
+
+/*
+ * Architecture specific compatibility types
+ */
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
+#include <asm/processor.h>
+#include <asm/user32.h>
+#include <asm/unistd.h>
+
+#define compat_mode_t compat_mode_t
+typedef u16 compat_mode_t;
+
+#define __compat_uid_t __compat_uid_t
+typedef u16 __compat_uid_t;
+typedef u16 __compat_gid_t;
+
+#define compat_dev_t compat_dev_t
+typedef u16 compat_dev_t;
+
+#define compat_ipc_pid_t compat_ipc_pid_t
+typedef u16 compat_ipc_pid_t;
+
+#define compat_statfs compat_statfs
+
+#include <asm-generic/compat.h>
+
+#define COMPAT_UTS_MACHINE "i686\0\0"
+
+typedef u16 compat_nlink_t;
+
+struct compat_stat {
+ u32 st_dev;
+ compat_ino_t st_ino;
+ compat_mode_t st_mode;
+ compat_nlink_t st_nlink;
+ __compat_uid_t st_uid;
+ __compat_gid_t st_gid;
+ u32 st_rdev;
+ u32 st_size;
+ u32 st_blksize;
+ u32 st_blocks;
+ u32 st_atime;
+ u32 st_atime_nsec;
+ u32 st_mtime;
+ u32 st_mtime_nsec;
+ u32 st_ctime;
+ u32 st_ctime_nsec;
+ u32 __unused4;
+ u32 __unused5;
+};
+
+/*
+ * IA32 uses 4 byte alignment for 64 bit quantities, so we need to pack the
+ * compat flock64 structure.
+ */
+#define __ARCH_NEED_COMPAT_FLOCK64_PACKED
+
+struct compat_statfs {
+ int f_type;
+ int f_bsize;
+ int f_blocks;
+ int f_bfree;
+ int f_bavail;
+ int f_files;
+ int f_ffree;
+ compat_fsid_t f_fsid;
+ int f_namelen; /* SunOS ignores this field. */
+ int f_frsize;
+ int f_flags;
+ int f_spare[4];
+};
+
+#ifdef CONFIG_X86_X32_ABI
+#define COMPAT_USE_64BIT_TIME \
+ (!!(task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT))
+#endif
+
+static inline bool in_x32_syscall(void)
+{
+#ifdef CONFIG_X86_X32_ABI
+ if (task_pt_regs(current)->orig_ax & __X32_SYSCALL_BIT)
+ return true;
+#endif
+ return false;
+}
+
+static inline bool in_32bit_syscall(void)
+{
+ return in_ia32_syscall() || in_x32_syscall();
+}
+
+#ifdef CONFIG_COMPAT
+static inline bool in_compat_syscall(void)
+{
+ return in_32bit_syscall();
+}
+#define in_compat_syscall in_compat_syscall /* override the generic impl */
+#define compat_need_64bit_alignment_fixup in_ia32_syscall
+#endif
+
+struct compat_siginfo;
+
+#ifdef CONFIG_X86_X32_ABI
+int copy_siginfo_to_user32(struct compat_siginfo __user *to,
+ const kernel_siginfo_t *from);
+#define copy_siginfo_to_user32 copy_siginfo_to_user32
+#endif /* CONFIG_X86_X32_ABI */
+
+#endif /* _ASM_X86_COMPAT_H */