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x86: use generic register name in the thread and tss structures

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This changes size-specific register names (eip/rip, esp/rsp, etc.) to
generic names in the thread and tss structures.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
H. Peter Anvin
2008-01-30 13:31:02 +01:00
committed by Ingo Molnar
parent 25149b62d3
commit faca62273b
23 changed files with 99 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/asm-x86/paravirt.h
View File

@@ -101,7 +101,7 @@ struct pv_cpu_ops {
int entrynum, u32 low, u32 high);
void (*write_idt_entry)(struct desc_struct *,
int entrynum, u32 low, u32 high);
void (*load_esp0)(struct tss_struct *tss, struct thread_struct *t);
void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t);
void (*set_iopl_mask)(unsigned mask);
@@ -449,10 +449,10 @@ static inline int paravirt_enabled(void)
return pv_info.paravirt_enabled;
}
static inline void load_esp0(struct tss_struct *tss,
static inline void load_sp0(struct tss_struct *tss,
struct thread_struct *thread)
{
PVOP_VCALL2(pv_cpu_ops.load_esp0, tss, thread);
PVOP_VCALL2(pv_cpu_ops.load_sp0, tss, thread);
}
#define ARCH_SETUP pv_init_ops.arch_setup();

37
include/asm-x86/processor_32.h
View File

@@ -292,20 +292,17 @@ struct thread_struct;
/* 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;
@@ -346,10 +343,10 @@ struct tss_struct {
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 */
@@ -366,7 +363,7 @@ struct thread_struct {
/* 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;
@@ -378,7 +375,7 @@ struct thread_struct {
};
#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, \
@@ -393,7 +390,7 @@ struct thread_struct {
*/
#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, \
@@ -503,9 +500,9 @@ static inline void rep_nop(void)
#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;
@@ -585,9 +582,9 @@ static inline void native_set_iopl_mask(unsigned mask)
#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);
}
/*

20
include/asm-x86/processor_64.h
View File

@@ -177,9 +177,9 @@ union i387_union {
struct tss_struct {
u32 reserved1;
u64 rsp0;
u64 rsp1;
u64 rsp2;
u64 sp0;
u64 sp1;
u64 sp2;
u64 reserved2;
u64 ist[7];
u32 reserved3;
@@ -216,9 +216,9 @@ DECLARE_PER_CPU(struct orig_ist, orig_ist);
#endif
struct thread_struct {
unsigned long rsp0;
unsigned long rsp;
unsigned long userrsp; /* Copy from PDA */
unsigned long sp0;
unsigned long sp;
unsigned long usersp; /* Copy from PDA */
unsigned long fs;
unsigned long gs;
unsigned short es, ds, fsindex, gsindex;
@@ -245,11 +245,11 @@ struct thread_struct {
} __attribute__((aligned(16)));
#define INIT_THREAD { \
.rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \
.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
}
#define INIT_TSS { \
.rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \
.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
}
#define INIT_MMAP \
@@ -293,10 +293,10 @@ extern long kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
* Return saved PC of a blocked thread.
* What is this good for? it will be always the scheduler or ret_from_fork.
*/
#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.rsp - 8))
#define thread_saved_pc(t) (*(unsigned long *)((t)->thread.sp - 8))
extern unsigned long get_wchan(struct task_struct *p);
#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.rsp0 - 1)
#define task_pt_regs(tsk) ((struct pt_regs *)(tsk)->thread.sp0 - 1)
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->ip)
#define KSTK_ESP(tsk) -1 /* sorry. doesn't work for syscall. */

4
include/asm-x86/system_32.h
View File

@@ -28,9 +28,9 @@ extern struct task_struct * FASTCALL(__switch_to(struct task_struct *prev, struc
"1:\t" \
"popl %%ebp\n\t" \
"popfl" \
:"=m" (prev->thread.esp),"=m" (prev->thread.eip), \
:"=m" (prev->thread.sp),"=m" (prev->thread.ip), \
"=a" (last),"=S" (esi),"=D" (edi) \
:"m" (next->thread.esp),"m" (next->thread.eip), \
:"m" (next->thread.sp),"m" (next->thread.ip), \
"2" (prev), "d" (next)); \
} while (0)

2
include/asm-x86/system_64.h
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@@ -40,7 +40,7 @@
RESTORE_CONTEXT \
: "=a" (last) \
: [next] "S" (next), [prev] "D" (prev), \
[threadrsp] "i" (offsetof(struct task_struct, thread.rsp)), \
[threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \
[ti_flags] "i" (offsetof(struct thread_info, flags)),\
[tif_fork] "i" (TIF_FORK), \
[thread_info] "i" (offsetof(struct task_struct, stack)), \