/*
- * include/asm-i386/processor.h
- *
* Copyright (C) 1994 Linus Torvalds
*/
#include <linux/cpumask.h>
#include <linux/init.h>
#include <asm/processor-flags.h>
+#include <asm/desc_defs.h>
-/* flag for disabling the tsc */
-extern int tsc_disable;
-
-struct desc_struct {
- unsigned long a,b;
-};
-
-#define desc_empty(desc) \
- (!((desc)->a | (desc)->b))
+static inline int desc_empty(const void *ptr)
+{
+ const u32 *desc = ptr;
+ return !(desc[0] | desc[1]);
+}
-#define desc_equal(desc1, desc2) \
- (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
static inline void detect_ht(struct cpuinfo_x86 *c) {}
#endif
-static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- /* ecx is often an input as well as an output. */
- __asm__("cpuid"
- : "=a" (*eax),
- "=b" (*ebx),
- "=c" (*ecx),
- "=d" (*edx)
- : "0" (*eax), "2" (*ecx));
-}
-
#define load_cr3(pgdir) write_cr3(__pa(pgdir))
/*
#define HAVE_ARCH_PICK_MMAP_LAYOUT
-extern void hard_disable_TSC(void);
-extern void disable_TSC(void);
-extern void hard_enable_TSC(void);
-
/*
* Size of io_bitmap.
*/
/* This is the TSS defined by the hardware. */
struct i386_hw_tss {
unsigned short back_link,__blh;
- unsigned long esp0;
+ unsigned long sp0;
unsigned short ss0,__ss0h;
- unsigned long esp1;
+ unsigned long sp1;
unsigned short ss1,__ss1h; /* ss1 is used to cache MSR_IA32_SYSENTER_CS */
- unsigned long esp2;
+ unsigned long sp2;
unsigned short ss2,__ss2h;
unsigned long __cr3;
- unsigned long eip;
- unsigned long eflags;
- unsigned long eax,ecx,edx,ebx;
- unsigned long esp;
- unsigned long ebp;
- unsigned long esi;
- unsigned long edi;
+ unsigned long ip;
+ unsigned long flags;
+ unsigned long ax, cx, dx, bx;
+ unsigned long sp, bp, si, di;
unsigned short es, __esh;
unsigned short cs, __csh;
unsigned short ss, __ssh;
struct thread_struct {
/* cached TLS descriptors. */
struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
- unsigned long esp0;
+ unsigned long sp0;
unsigned long sysenter_cs;
- unsigned long eip;
- unsigned long esp;
+ unsigned long ip;
+ unsigned long sp;
unsigned long fs;
unsigned long gs;
/* Hardware debugging registers */
- unsigned long debugreg[8]; /* %%db0-7 debug registers */
+ unsigned long debugreg0;
+ unsigned long debugreg1;
+ unsigned long debugreg2;
+ unsigned long debugreg3;
+ unsigned long debugreg6;
+ unsigned long debugreg7;
/* fault info */
unsigned long cr2, trap_no, error_code;
/* floating point info */
/* virtual 86 mode info */
struct vm86_struct __user * vm86_info;
unsigned long screen_bitmap;
- unsigned long v86flags, v86mask, saved_esp0;
+ unsigned long v86flags, v86mask, saved_sp0;
unsigned int saved_fs, saved_gs;
/* IO permissions */
unsigned long *io_bitmap_ptr;
unsigned long iopl;
/* max allowed port in the bitmap, in bytes: */
unsigned long io_bitmap_max;
+/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */
+ unsigned long debugctlmsr;
+/* Debug Store - if not 0 points to a DS Save Area configuration;
+ * goes into MSR_IA32_DS_AREA */
+ unsigned long ds_area_msr;
};
#define INIT_THREAD { \
- .esp0 = sizeof(init_stack) + (long)&init_stack, \
+ .sp0 = sizeof(init_stack) + (long)&init_stack, \
.vm86_info = NULL, \
.sysenter_cs = __KERNEL_CS, \
.io_bitmap_ptr = NULL, \
*/
#define INIT_TSS { \
.x86_tss = { \
- .esp0 = sizeof(init_stack) + (long)&init_stack, \
+ .sp0 = sizeof(init_stack) + (long)&init_stack, \
.ss0 = __KERNEL_DS, \
.ss1 = __KERNEL_CS, \
.io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \
#define start_thread(regs, new_eip, new_esp) do { \
__asm__("movl %0,%%gs": :"r" (0)); \
- regs->xfs = 0; \
+ regs->fs = 0; \
set_fs(USER_DS); \
- regs->xds = __USER_DS; \
- regs->xes = __USER_DS; \
- regs->xss = __USER_DS; \
- regs->xcs = __USER_CS; \
- regs->eip = new_eip; \
- regs->esp = new_esp; \
+ regs->ds = __USER_DS; \
+ regs->es = __USER_DS; \
+ regs->ss = __USER_DS; \
+ regs->cs = __USER_CS; \
+ regs->ip = new_eip; \
+ regs->sp = new_esp; \
} while (0)
/* Forward declaration, a strange C thing */
* is accessable even if the CPU haven't stored the SS/ESP registers
* on the stack (interrupt gate does not save these registers
* when switching to the same priv ring).
- * Therefore beware: accessing the xss/esp fields of the
+ * Therefore beware: accessing the ss/esp fields of the
* "struct pt_regs" is possible, but they may contain the
* completely wrong values.
*/
__regs__ - 1; \
})
-#define KSTK_EIP(task) (task_pt_regs(task)->eip)
-#define KSTK_ESP(task) (task_pt_regs(task)->esp)
+#define KSTK_EIP(task) (task_pt_regs(task)->ip)
+#define KSTK_ESP(task) (task_pt_regs(task)->sp)
struct microcode_header {
#define cpu_relax() rep_nop()
-static inline void native_load_esp0(struct tss_struct *tss, struct thread_struct *thread)
+static inline void native_load_sp0(struct tss_struct *tss, struct thread_struct *thread)
{
- tss->x86_tss.esp0 = thread->esp0;
+ tss->x86_tss.sp0 = thread->sp0;
/* This can only happen when SEP is enabled, no need to test "SEP"arately */
if (unlikely(tss->x86_tss.ss1 != thread->sysenter_cs)) {
tss->x86_tss.ss1 = thread->sysenter_cs;
#include <asm/paravirt.h>
#else
#define paravirt_enabled() 0
-#define __cpuid native_cpuid
-static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
+static inline void load_sp0(struct tss_struct *tss, struct thread_struct *thread)
{
- native_load_esp0(tss, thread);
+ native_load_sp0(tss, thread);
}
/*
#define set_iopl_mask native_set_iopl_mask
#endif /* CONFIG_PARAVIRT */
-/*
- * Generic CPUID function
- * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
- * resulting in stale register contents being returned.
- */
-static inline void cpuid(unsigned int op,
- unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- *eax = op;
- *ecx = 0;
- __cpuid(eax, ebx, ecx, edx);
-}
-
-/* Some CPUID calls want 'count' to be placed in ecx */
-static inline void cpuid_count(unsigned int op, int count,
- unsigned int *eax, unsigned int *ebx,
- unsigned int *ecx, unsigned int *edx)
-{
- *eax = op;
- *ecx = count;
- __cpuid(eax, ebx, ecx, edx);
-}
-
-/*
- * CPUID functions returning a single datum
- */
-static inline unsigned int cpuid_eax(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return eax;
-}
-static inline unsigned int cpuid_ebx(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return ebx;
-}
-static inline unsigned int cpuid_ecx(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return ecx;
-}
-static inline unsigned int cpuid_edx(unsigned int op)
-{
- unsigned int eax, ebx, ecx, edx;
-
- cpuid(op, &eax, &ebx, &ecx, &edx);
- return edx;
-}
-
/* generic versions from gas */
#define GENERIC_NOP1 ".byte 0x90\n"
#define GENERIC_NOP2 ".byte 0x89,0xf6\n"
extern int sysenter_setup(void);
/* Defined in head.S */
-extern struct Xgt_desc_struct early_gdt_descr;
+extern struct desc_ptr early_gdt_descr;
extern void cpu_set_gdt(int);
extern void switch_to_new_gdt(void);
git.samba.org / sfrench / cifs-2.6.git / blobdiff