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

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>

5 files changed, 33 insertions, 36 deletions

diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index be7b934..d1780e3 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -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();
diff --git a/include/asm-x86/processor_32.h b/include/asm-x86/processor_32.h
index d50a4b4..6846cc3 100644
--- a/include/asm-x86/processor_32.h
+++ b/include/asm-x86/processor_32.h
@@ -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);
 }
 
 /*
diff --git a/include/asm-x86/processor_64.h b/include/asm-x86/processor_64.h
index 7977701..0780f3e 100644
--- a/include/asm-x86/processor_64.h
+++ b/include/asm-x86/processor_64.h
@@ -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. */
 
diff --git a/include/asm-x86/system_32.h b/include/asm-x86/system_32.h
index db6283e..f5b3f77 100644
--- a/include/asm-x86/system_32.h
+++ b/include/asm-x86/system_32.h
@@ -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)
 
diff --git a/include/asm-x86/system_64.h b/include/asm-x86/system_64.h
index 6e9e484..3dcb217 100644
--- a/include/asm-x86/system_64.h
+++ b/include/asm-x86/system_64.h
@@ -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)), \