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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interface.h (2593B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/******************************************************************************
      3 * Guest OS interface to ARM Xen.
      4 *
      5 * Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
      6 */
      7
      8#ifndef _ASM_ARM_XEN_INTERFACE_H
      9#define _ASM_ARM_XEN_INTERFACE_H
     10
     11#include <linux/types.h>
     12
     13#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
     14
     15#define __DEFINE_GUEST_HANDLE(name, type) \
     16	typedef struct { union { type *p; uint64_aligned_t q; }; }  \
     17        __guest_handle_ ## name
     18
     19#define DEFINE_GUEST_HANDLE_STRUCT(name) \
     20	__DEFINE_GUEST_HANDLE(name, struct name)
     21#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
     22#define GUEST_HANDLE(name)        __guest_handle_ ## name
     23
     24#define set_xen_guest_handle(hnd, val)			\
     25	do {						\
     26		if (sizeof(hnd) == 8)			\
     27			*(uint64_t *)&(hnd) = 0;	\
     28		(hnd).p = val;				\
     29	} while (0)
     30
     31#define __HYPERVISOR_platform_op_raw __HYPERVISOR_platform_op
     32
     33#ifndef __ASSEMBLY__
     34/* Explicitly size integers that represent pfns in the interface with
     35 * Xen so that we can have one ABI that works for 32 and 64 bit guests.
     36 * Note that this means that the xen_pfn_t type may be capable of
     37 * representing pfn's which the guest cannot represent in its own pfn
     38 * type. However since pfn space is controlled by the guest this is
     39 * fine since it simply wouldn't be able to create any sure pfns in
     40 * the first place.
     41 */
     42typedef uint64_t xen_pfn_t;
     43#define PRI_xen_pfn "llx"
     44typedef uint64_t xen_ulong_t;
     45#define PRI_xen_ulong "llx"
     46typedef int64_t xen_long_t;
     47#define PRI_xen_long "llx"
     48/* Guest handles for primitive C types. */
     49__DEFINE_GUEST_HANDLE(uchar, unsigned char);
     50__DEFINE_GUEST_HANDLE(uint,  unsigned int);
     51DEFINE_GUEST_HANDLE(char);
     52DEFINE_GUEST_HANDLE(int);
     53DEFINE_GUEST_HANDLE(void);
     54DEFINE_GUEST_HANDLE(uint64_t);
     55DEFINE_GUEST_HANDLE(uint32_t);
     56DEFINE_GUEST_HANDLE(xen_pfn_t);
     57DEFINE_GUEST_HANDLE(xen_ulong_t);
     58
     59/* Maximum number of virtual CPUs in multi-processor guests. */
     60#define MAX_VIRT_CPUS 1
     61
     62struct arch_vcpu_info { };
     63struct arch_shared_info { };
     64
     65/* TODO: Move pvclock definitions some place arch independent */
     66struct pvclock_vcpu_time_info {
     67	u32   version;
     68	u32   pad0;
     69	u64   tsc_timestamp;
     70	u64   system_time;
     71	u32   tsc_to_system_mul;
     72	s8    tsc_shift;
     73	u8    flags;
     74	u8    pad[2];
     75} __attribute__((__packed__)); /* 32 bytes */
     76
     77/* It is OK to have a 12 bytes struct with no padding because it is packed */
     78struct pvclock_wall_clock {
     79	u32   version;
     80	u32   sec;
     81	u32   nsec;
     82	u32   sec_hi;
     83} __attribute__((__packed__));
     84#endif
     85
     86#endif /* _ASM_ARM_XEN_INTERFACE_H */