cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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compat.h (2844B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_S390X_COMPAT_H
      3#define _ASM_S390X_COMPAT_H
      4/*
      5 * Architecture specific compatibility types
      6 */
      7#include <linux/types.h>
      8#include <linux/sched.h>
      9#include <linux/sched/task_stack.h>
     10#include <linux/thread_info.h>
     11#include <asm/ptrace.h>
     12
     13#define compat_mode_t	compat_mode_t
     14typedef u16		compat_mode_t;
     15
     16#define __compat_uid_t	__compat_uid_t
     17typedef u16		__compat_uid_t;
     18typedef u16		__compat_gid_t;
     19
     20#define compat_dev_t	compat_dev_t
     21typedef u16		compat_dev_t;
     22
     23#define compat_ipc_pid_t compat_ipc_pid_t
     24typedef u16		 compat_ipc_pid_t;
     25
     26#define compat_statfs	compat_statfs
     27
     28#include <asm-generic/compat.h>
     29
     30#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
     31				typeof(0?(__force t)0:0ULL), u64))
     32
     33#define __SC_DELOUSE(t,v) ({ \
     34	BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
     35	(__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
     36})
     37
     38#define PSW32_MASK_USER		0x0000FF00UL
     39
     40#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
     41			 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
     42			 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
     43			 PSW32_ASC_PRIMARY)
     44
     45#define COMPAT_UTS_MACHINE	"s390\0\0\0\0"
     46
     47typedef u16		compat_nlink_t;
     48
     49typedef struct {
     50	u32 mask;
     51	u32 addr;
     52} __aligned(8) psw_compat_t;
     53
     54typedef struct {
     55	psw_compat_t psw;
     56	u32 gprs[NUM_GPRS];
     57	u32 acrs[NUM_ACRS];
     58	u32 orig_gpr2;
     59} s390_compat_regs;
     60
     61typedef struct {
     62	u32 gprs_high[NUM_GPRS];
     63} s390_compat_regs_high;
     64
     65struct compat_stat {
     66	compat_dev_t	st_dev;
     67	u16		__pad1;
     68	compat_ino_t	st_ino;
     69	compat_mode_t	st_mode;
     70	compat_nlink_t	st_nlink;
     71	__compat_uid_t	st_uid;
     72	__compat_gid_t	st_gid;
     73	compat_dev_t	st_rdev;
     74	u16		__pad2;
     75	u32		st_size;
     76	u32		st_blksize;
     77	u32		st_blocks;
     78	u32		st_atime;
     79	u32		st_atime_nsec;
     80	u32		st_mtime;
     81	u32		st_mtime_nsec;
     82	u32		st_ctime;
     83	u32		st_ctime_nsec;
     84	u32		__unused4;
     85	u32		__unused5;
     86};
     87
     88struct compat_statfs {
     89	u32		f_type;
     90	u32		f_bsize;
     91	u32		f_blocks;
     92	u32		f_bfree;
     93	u32		f_bavail;
     94	u32		f_files;
     95	u32		f_ffree;
     96	compat_fsid_t	f_fsid;
     97	u32		f_namelen;
     98	u32		f_frsize;
     99	u32		f_flags;
    100	u32		f_spare[4];
    101};
    102
    103struct compat_statfs64 {
    104	u32		f_type;
    105	u32		f_bsize;
    106	u64		f_blocks;
    107	u64		f_bfree;
    108	u64		f_bavail;
    109	u64		f_files;
    110	u64		f_ffree;
    111	compat_fsid_t	f_fsid;
    112	u32		f_namelen;
    113	u32		f_frsize;
    114	u32		f_flags;
    115	u32		f_spare[4];
    116};
    117
    118/*
    119 * A pointer passed in from user mode. This should not
    120 * be used for syscall parameters, just declare them
    121 * as pointers because the syscall entry code will have
    122 * appropriately converted them already.
    123 */
    124
    125static inline void __user *compat_ptr(compat_uptr_t uptr)
    126{
    127	return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
    128}
    129#define compat_ptr(uptr) compat_ptr(uptr)
    130
    131#ifdef CONFIG_COMPAT
    132
    133static inline int is_compat_task(void)
    134{
    135	return test_thread_flag(TIF_31BIT);
    136}
    137
    138#endif
    139
    140#endif /* _ASM_S390X_COMPAT_H */