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11f152c0ac
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize now on the __ASSEMBLER__ macro that is provided by the compilers. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> Message-ID: <20260421142701.548978-1-thuth@redhat.com>
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/******************************************************************************
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* Guest OS interface to ARM Xen.
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*
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* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
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*/
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#ifndef _ASM_ARM_XEN_INTERFACE_H
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#define _ASM_ARM_XEN_INTERFACE_H
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#include <linux/types.h>
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#define uint64_aligned_t uint64_t __attribute__((aligned(8)))
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#define __DEFINE_GUEST_HANDLE(name, type) \
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typedef struct { union { type *p; uint64_aligned_t q; }; } \
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__guest_handle_ ## name
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#define DEFINE_GUEST_HANDLE_STRUCT(name) \
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__DEFINE_GUEST_HANDLE(name, struct name)
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#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
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#define GUEST_HANDLE(name) __guest_handle_ ## name
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#define set_xen_guest_handle(hnd, val) \
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do { \
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if (sizeof(hnd) == 8) \
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*(uint64_t *)&(hnd) = 0; \
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(hnd).p = val; \
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} while (0)
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#define __HYPERVISOR_platform_op_raw __HYPERVISOR_platform_op
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#ifndef __ASSEMBLER__
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/* Explicitly size integers that represent pfns in the interface with
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* Xen so that we can have one ABI that works for 32 and 64 bit guests.
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* Note that this means that the xen_pfn_t type may be capable of
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* representing pfn's which the guest cannot represent in its own pfn
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* type. However since pfn space is controlled by the guest this is
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* fine since it simply wouldn't be able to create any sure pfns in
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* the first place.
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*/
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typedef uint64_t xen_pfn_t;
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#define PRI_xen_pfn "llx"
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typedef uint64_t xen_ulong_t;
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#define PRI_xen_ulong "llx"
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typedef int64_t xen_long_t;
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#define PRI_xen_long "llx"
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/* Guest handles for primitive C types. */
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__DEFINE_GUEST_HANDLE(uchar, unsigned char);
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__DEFINE_GUEST_HANDLE(uint, unsigned int);
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DEFINE_GUEST_HANDLE(char);
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DEFINE_GUEST_HANDLE(int);
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DEFINE_GUEST_HANDLE(void);
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DEFINE_GUEST_HANDLE(uint64_t);
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DEFINE_GUEST_HANDLE(uint32_t);
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DEFINE_GUEST_HANDLE(xen_pfn_t);
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DEFINE_GUEST_HANDLE(xen_ulong_t);
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/* Maximum number of virtual CPUs in multi-processor guests. */
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#define MAX_VIRT_CPUS 1
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struct arch_vcpu_info { };
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struct arch_shared_info { };
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/* TODO: Move pvclock definitions some place arch independent */
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struct pvclock_vcpu_time_info {
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u32 version;
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u32 pad0;
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u64 tsc_timestamp;
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u64 system_time;
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u32 tsc_to_system_mul;
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s8 tsc_shift;
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u8 flags;
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u8 pad[2];
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} __attribute__((__packed__)); /* 32 bytes */
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/* It is OK to have a 12 bytes struct with no padding because it is packed */
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struct pvclock_wall_clock {
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u32 version;
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u32 sec;
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u32 nsec;
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u32 sec_hi;
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} __attribute__((__packed__));
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#endif
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#endif /* _ASM_ARM_XEN_INTERFACE_H */
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