1 files changed, 101 insertions, 0 deletions
diff --git a/arch/s390/kernel/compat_linux.h b/arch/s390/kernel/compat_linux.h
new file mode 100644
index 0000000000..ef23739b27
--- /dev/null
+++ b/arch/s390/kernel/compat_linux.h
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_S390X_S390_H
+#define _ASM_S390X_S390_H
+
+#include <linux/compat.h>
+#include <linux/socket.h>
+#include <linux/syscalls.h>
+#include <asm/ptrace.h>
+
+/*
+ * Macro that masks the high order bit of a 32 bit pointer and
+ * converts it to a 64 bit pointer.
+ */
+#define A(__x)	((unsigned long)((__x) & 0x7FFFFFFFUL))
+#define AA(__x)	((unsigned long)(__x))
+
+/* Now 32bit compatibility types */
+struct ipc_kludge_32 {
+	__u32	msgp;	/* pointer */
+	__s32	msgtyp;
+};
+
+/* asm/sigcontext.h */
+typedef union {
+	__u64	d;
+	__u32	f;
+} freg_t32;
+
+typedef struct {
+	unsigned int	fpc;
+	unsigned int	pad;
+	freg_t32	fprs[__NUM_FPRS];
+} _s390_fp_regs32;
+
+typedef struct {
+	psw_t32		psw;
+	__u32		gprs[__NUM_GPRS];
+	__u32		acrs[__NUM_ACRS];
+} _s390_regs_common32;
+
+typedef struct {
+	_s390_regs_common32 regs;
+	_s390_fp_regs32	    fpregs;
+} _sigregs32;
+
+typedef struct {
+	__u32		gprs_high[__NUM_GPRS];
+	__u64		vxrs_low[__NUM_VXRS_LOW];
+	__vector128	vxrs_high[__NUM_VXRS_HIGH];
+	__u8		__reserved[128];
+} _sigregs_ext32;
+
+#define _SIGCONTEXT_NSIG32	64
+#define _SIGCONTEXT_NSIG_BPW32	32
+#define __SIGNAL_FRAMESIZE32	96
+#define _SIGMASK_COPY_SIZE32	(sizeof(u32) * 2)
+
+struct sigcontext32 {
+	__u32	oldmask[_COMPAT_NSIG_WORDS];
+	__u32	sregs;	/* pointer */
+};
+
+/* asm/signal.h */
+
+/* asm/ucontext.h */
+struct ucontext32 {
+	__u32			uc_flags;
+	__u32			uc_link;	/* pointer */
+	compat_stack_t		uc_stack;
+	_sigregs32		uc_mcontext;
+	compat_sigset_t		uc_sigmask;
+	/* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */
+	unsigned char		__unused[128 - sizeof(compat_sigset_t)];
+	_sigregs_ext32		uc_mcontext_ext;
+};
+
+struct stat64_emu31;
+struct mmap_arg_struct_emu31;
+struct fadvise64_64_args;
+
+long compat_sys_s390_truncate64(const char __user *path, u32 high, u32 low);
+long compat_sys_s390_ftruncate64(unsigned int fd, u32 high, u32 low);
+long compat_sys_s390_pread64(unsigned int fd, char __user *ubuf, compat_size_t count, u32 high, u32 low);
+long compat_sys_s390_pwrite64(unsigned int fd, const char __user *ubuf, compat_size_t count, u32 high, u32 low);
+long compat_sys_s390_readahead(int fd, u32 high, u32 low, s32 count);
+long compat_sys_s390_stat64(const char __user *filename, struct stat64_emu31 __user *statbuf);
+long compat_sys_s390_lstat64(const char __user *filename, struct stat64_emu31 __user *statbuf);
+long compat_sys_s390_fstat64(unsigned int fd, struct stat64_emu31 __user *statbuf);
+long compat_sys_s390_fstatat64(unsigned int dfd, const char __user *filename, struct stat64_emu31 __user *statbuf, int flag);
+long compat_sys_s390_old_mmap(struct mmap_arg_struct_emu31 __user *arg);
+long compat_sys_s390_mmap2(struct mmap_arg_struct_emu31 __user *arg);
+long compat_sys_s390_read(unsigned int fd, char __user *buf, compat_size_t count);
+long compat_sys_s390_write(unsigned int fd, const char __user *buf, compat_size_t count);
+long compat_sys_s390_fadvise64(int fd, u32 high, u32 low, compat_size_t len, int advise);
+long compat_sys_s390_fadvise64_64(struct fadvise64_64_args __user *args);
+long compat_sys_s390_sync_file_range(int fd, u32 offhigh, u32 offlow, u32 nhigh, u32 nlow, unsigned int flags);
+long compat_sys_s390_fallocate(int fd, int mode, u32 offhigh, u32 offlow, u32 lenhigh, u32 lenlow);
+long compat_sys_sigreturn(void);
+long compat_sys_rt_sigreturn(void);
+
+#endif /* _ASM_S390X_S390_H */