xnu-1699.32.7.tar.gz

[apple/xnu.git] / osfmk / i386 / tss.h

diff --git a/osfmk/i386/tss.h b/osfmk/i386/tss.h
index 2ea97230d443ed34d66cf3d6b6267d5fd9bb9eb2..866d2056bbd0fc611730eecd0f599c30345a4d7a 100644 (file)
--- a/osfmk/i386/tss.h
+++ b/osfmk/i386/tss.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -59,41 +59,77 @@
 #ifndef        _I386_TSS_H_
 #define        _I386_TSS_H_
 
+#include <stdint.h>
+
 /*
  *     i386 Task State Segment
  */
 struct i386_tss {
-       int             back_link;      /* segment number of previous task,
+       uint32_t        back_link;      /* segment number of previous task,
                                           if nested */
-       int             esp0;           /* initial stack pointer ... */
-       int             ss0;            /* and segment for ring 0 */
-       int             esp1;           /* initial stack pointer ... */
-       int             ss1;            /* and segment for ring 1 */
-       int             esp2;           /* initial stack pointer ... */
-       int             ss2;            /* and segment for ring 2 */
-       int             cr3;            /* CR3 - page table directory
+       uint32_t        esp0;           /* initial stack pointer ... */
+       uint32_t        ss0;            /* and segment for ring 0 */
+       uint32_t        esp1;           /* initial stack pointer ... */
+       uint32_t        ss1;            /* and segment for ring 1 */
+       uint32_t        esp2;           /* initial stack pointer ... */
+       uint32_t        ss2;            /* and segment for ring 2 */
+       uint32_t        cr3;            /* CR3 - page table directory
                                                 physical address */
-       int             eip;
-       int             eflags;
-       int             eax;
-       int             ecx;
-       int             edx;
-       int             ebx;
-       int             esp;            /* current stack pointer */
-       int             ebp;
-       int             esi;
-       int             edi;
-       int             es;
-       int             cs;
-       int             ss;             /* current stack segment */
-       int             ds;
-       int             fs;
-       int             gs;
-       int             ldt;            /* local descriptor table segment */
-       unsigned short  trace_trap;     /* trap on switch to this task */
-       unsigned short  io_bit_map_offset;
+       uint32_t        eip;
+       uint32_t        eflags;
+       uint32_t        eax;
+       uint32_t        ecx;
+       uint32_t        edx;
+       uint32_t        ebx;
+       uint32_t        esp;            /* current stack pointer */
+       uint32_t        ebp;
+       uint32_t        esi;
+       uint32_t        edi;
+       uint32_t        es;
+       uint32_t        cs;
+       uint32_t        ss;             /* current stack segment */
+       uint32_t        ds;
+       uint32_t        fs;
+       uint32_t        gs;
+       uint32_t        ldt;            /* local descriptor table segment */
+       uint16_t        trace_trap;     /* trap on switch to this task */
+       uint16_t        io_bit_map_offset;
                                        /* offset to start of IO permission
                                           bit map */
 };
 
+/*
+ * Temporary stack used on kernel entry via the sysenter instruction.
+ * Its top points on to the PCB save area. It must contain space for
+ * a single interrupt stack frame in case of single-stepping over the sysenter.
+ * Although this is defined as a 64-bit stack, the space is also used in
+ * 32-bit legacy mode. For 64-bit the stack is 16-byte aligned.
+ */
+struct sysenter_stack {
+       uint64_t        stack[16];      /* Space for a 64-bit frame and some */
+       uint64_t        top;            /* Top and pointer to ISS in PCS */
+};
+
+#pragma pack(4)
+struct x86_64_tss {
+       uint32_t        reserved1;
+       uint64_t        rsp0;           /* stack pointer for CPL0 */
+       uint64_t        rsp1;           /* stack pointer for CPL1 */
+       uint64_t        rsp2;           /* stack pointer for CPL2 */
+       uint32_t        reserved2;
+       uint32_t        reserved3;
+       uint64_t        ist1;           /* interrupt stack table 1 */
+       uint64_t        ist2;           /* interrupt stack table 2 */
+       uint64_t        ist3;           /* interrupt stack table 3 */
+       uint64_t        ist4;           /* interrupt stack table 4 */
+       uint64_t        ist5;           /* interrupt stack table 5 */
+       uint64_t        ist6;           /* interrupt stack table 6 */
+       uint64_t        ist7;           /* interrupt stack table 7 */
+       uint32_t        reserved4;
+       uint32_t        reserved5;
+       uint16_t        reserved6;
+       uint16_t        io_bit_map_offset;
+                                       /* offset to IO permission bit map */
+};
+#pragma pack()
 #endif /* _I386_TSS_H_ */