xen-x86_32.h revision 843e19887f64dde75055cf8842fc4db2171eff45
843e19887f64dde75055cf8842fc4db2171eff45johnlev/******************************************************************************
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Guest OS interface to x86 32-bit Xen.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Permission is hereby granted, free of charge, to any person obtaining a copy
843e19887f64dde75055cf8842fc4db2171eff45johnlev * of this software and associated documentation files (the "Software"), to
843e19887f64dde75055cf8842fc4db2171eff45johnlev * deal in the Software without restriction, including without limitation the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
843e19887f64dde75055cf8842fc4db2171eff45johnlev * sell copies of the Software, and to permit persons to whom the Software is
843e19887f64dde75055cf8842fc4db2171eff45johnlev * furnished to do so, subject to the following conditions:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The above copyright notice and this permission notice shall be included in
843e19887f64dde75055cf8842fc4db2171eff45johnlev * all copies or substantial portions of the Software.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
843e19887f64dde75055cf8842fc4db2171eff45johnlev * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
843e19887f64dde75055cf8842fc4db2171eff45johnlev * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
843e19887f64dde75055cf8842fc4db2171eff45johnlev * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
843e19887f64dde75055cf8842fc4db2171eff45johnlev * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
843e19887f64dde75055cf8842fc4db2171eff45johnlev * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
843e19887f64dde75055cf8842fc4db2171eff45johnlev * DEALINGS IN THE SOFTWARE.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Copyright (c) 2004-2006, K A Fraser
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Hypercall interface:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Input: %ebx, %ecx, %edx, %esi, %edi (arguments 1-5)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Output: %eax
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Access is via hypercall page (set up by guest loader or via a Xen MSR):
843e19887f64dde75055cf8842fc4db2171eff45johnlev * call hypercall_page + hypercall-number * 32
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Clobbered: Argument registers (e.g., 2-arg hypercall clobbers %ebx,%ecx)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * XXPV HACK, we don't support the hypercall page yet.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * #if __XEN_INTERFACE_VERSION__ < 0x00030203
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Legacy hypercall interface:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * As above, except the entry sequence to the hypervisor is:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * mov $hypercall-number*32,%eax ; int $0x82
843e19887f64dde75055cf8842fc4db2171eff45johnlev#if !defined(_ASM)
843e19887f64dde75055cf8842fc4db2171eff45johnlev * XXPV HACK, we don't support the hypercall page yet.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * These flat segments are in the Xen-private section of every GDT. Since these
843e19887f64dde75055cf8842fc4db2171eff45johnlev * are also present in the initial GDT, many OSes will be able to avoid
843e19887f64dde75055cf8842fc4db2171eff45johnlev * installing their own GDT.
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define __HYPERVISOR_VIRT_START __HYPERVISOR_VIRT_START_PAE
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define __MACH2PHYS_VIRT_START __MACH2PHYS_VIRT_START_PAE
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define __MACH2PHYS_VIRT_END __MACH2PHYS_VIRT_END_PAE
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define __HYPERVISOR_VIRT_START __HYPERVISOR_VIRT_START_NONPAE
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define __MACH2PHYS_VIRT_START __MACH2PHYS_VIRT_START_NONPAE
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define __MACH2PHYS_VIRT_END __MACH2PHYS_VIRT_END_NONPAE
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define MACH2PHYS_VIRT_START mk_unsigned_long(__MACH2PHYS_VIRT_START)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define MACH2PHYS_VIRT_END mk_unsigned_long(__MACH2PHYS_VIRT_END)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>2)
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define machine_to_phys_mapping ((unsigned long *)MACH2PHYS_VIRT_START)
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint32_t eflags; /* eflags.IF == !saved_upcall_mask */
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Page-directory addresses above 4GB do not fit into architectural %cr3.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * When accessing %cr3, or equivalent field in vcpu_guest_context, guests
843e19887f64dde75055cf8842fc4db2171eff45johnlev * must use the following accessor macros to pack/unpack valid MFNs.
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
843e19887f64dde75055cf8842fc4db2171eff45johnlev#define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long cr2;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long pad[5]; /* sizeof(vcpu_info_t) == 64 */
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long cs;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long eip;
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Structure used to capture the register state at panic time. This struct
843e19887f64dde75055cf8842fc4db2171eff45johnlev * is built to mimic a similar structure in Solaris. If there is interest
843e19887f64dde75055cf8842fc4db2171eff45johnlev * in making this panic implementation an official part of Xen, this should
843e19887f64dde75055cf8842fc4db2171eff45johnlev * be made more platform-neutral.
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long pad1;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long pad2;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long gs;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long fs;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long es;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long ds;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long edi;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long esi;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long ebp;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long esp;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long ebx;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long edx;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long ecx;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long eax;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long pad3;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long pad4;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long eip;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long cs;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long efl;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long pad5;
843e19887f64dde75055cf8842fc4db2171eff45johnlev unsigned long ss;
843e19887f64dde75055cf8842fc4db2171eff45johnlev#endif /* !__ASSEMBLY__ */
843e19887f64dde75055cf8842fc4db2171eff45johnlev/* Offsets of each field in the xen_panic_regs structure. */
843e19887f64dde75055cf8842fc4db2171eff45johnlev#endif /* __XEN_PUBLIC_ARCH_X86_XEN_X86_32_H__ */
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Local variables:
843e19887f64dde75055cf8842fc4db2171eff45johnlev * c-set-style: "BSD"
843e19887f64dde75055cf8842fc4db2171eff45johnlev * c-basic-offset: 4
843e19887f64dde75055cf8842fc4db2171eff45johnlev * tab-width: 4
843e19887f64dde75055cf8842fc4db2171eff45johnlev * indent-tabs-mode: nil