Archipelago » qemu

/* default linux values for the selectors */

#define __USER_CS        (0x23)

#define __USER_DS        (0x2B)

struct target_pt_regs {

        long ebx;

        long ecx;

        long edx;

        long esi;

        long edi;

        long ebp;

        long eax;

        int  xds;

        int  xes;

        long orig_eax;

        long eip;

        int  xcs;

        long eflags;

        long esp;

        int  xss;

};

/* ioctls */

#define TARGET_LDT_ENTRIES      8192

#define TARGET_LDT_ENTRY_SIZE        8

#define TARGET_GDT_ENTRIES             9

#define TARGET_GDT_ENTRY_TLS_ENTRIES   3

#define TARGET_GDT_ENTRY_TLS_MIN       6

#define TARGET_GDT_ENTRY_TLS_MAX       (TARGET_GDT_ENTRY_TLS_MIN + TARGET_GDT_ENTRY_TLS_ENTRIES - 1)

struct target_modify_ldt_ldt_s {

    unsigned int  entry_number;

    abi_ulong base_addr;

    unsigned int limit;

    unsigned int flags;

};

/* vm86 defines */

#define TARGET_BIOSSEG                0x0f000

#define TARGET_CPU_086                0

#define TARGET_CPU_186                1

#define TARGET_CPU_286                2

#define TARGET_CPU_386                3

#define TARGET_CPU_486                4

#define TARGET_CPU_586                5

#define TARGET_VM86_SIGNAL        0        /* return due to signal */

#define TARGET_VM86_UNKNOWN        1        /* unhandled GP fault - IO-instruction or similar */

#define TARGET_VM86_INTx        2        /* int3/int x instruction (ARG = x) */

#define TARGET_VM86_STI        3        /* sti/popf/iret instruction enabled virtual interrupts */

/*

 * Additional return values when invoking new vm86()

 */

#define TARGET_VM86_PICRETURN        4        /* return due to pending PIC request */

#define TARGET_VM86_TRAP        6        /* return due to DOS-debugger request */

/*

 * function codes when invoking new vm86()

 */

#define TARGET_VM86_PLUS_INSTALL_CHECK        0

#define TARGET_VM86_ENTER                1

#define TARGET_VM86_ENTER_NO_BYPASS        2

#define        TARGET_VM86_REQUEST_IRQ        3

#define TARGET_VM86_FREE_IRQ                4

#define TARGET_VM86_GET_IRQ_BITS        5

#define TARGET_VM86_GET_AND_RESET_IRQ        6

/*

 * This is the stack-layout seen by the user space program when we have

 * done a translation of "SAVE_ALL" from vm86 mode. The real kernel layout

 * is 'kernel_vm86_regs' (see below).

 */

struct target_vm86_regs {

/*

 * normal regs, with special meaning for the segment descriptors..

 */

        abi_long ebx;

        abi_long ecx;

        abi_long edx;

        abi_long esi;

        abi_long edi;

        abi_long ebp;

        abi_long eax;

        abi_long __null_ds;

        abi_long __null_es;

        abi_long __null_fs;

        abi_long __null_gs;

        abi_long orig_eax;

        abi_long eip;

        unsigned short cs, __csh;

        abi_long eflags;

        abi_long esp;

        unsigned short ss, __ssh;

/*

 * these are specific to v86 mode:

 */

        unsigned short es, __esh;

        unsigned short ds, __dsh;

        unsigned short fs, __fsh;

        unsigned short gs, __gsh;

};

struct target_revectored_struct {

        abi_ulong __map[8];                        /* 256 bits */

};

struct target_vm86_struct {

        struct target_vm86_regs regs;

        abi_ulong flags;

        abi_ulong screen_bitmap;

        abi_ulong cpu_type;

        struct target_revectored_struct int_revectored;

        struct target_revectored_struct int21_revectored;

};

/*

 * flags masks

 */

#define TARGET_VM86_SCREEN_BITMAP        0x0001

struct target_vm86plus_info_struct {

        abi_ulong flags;

#define TARGET_force_return_for_pic (1 << 0)

#define TARGET_vm86dbg_active       (1 << 1)  /* for debugger */

#define TARGET_vm86dbg_TFpendig     (1 << 2)  /* for debugger */

#define TARGET_is_vm86pus           (1 << 31) /* for vm86 internal use */

        unsigned char vm86dbg_intxxtab[32];   /* for debugger */

};

struct target_vm86plus_struct {

        struct target_vm86_regs regs;

        abi_ulong flags;

        abi_ulong screen_bitmap;

        abi_ulong cpu_type;

        struct target_revectored_struct int_revectored;

        struct target_revectored_struct int21_revectored;

        struct target_vm86plus_info_struct vm86plus;

};

#define UNAME_MACHINE "i386"