From a6b4655258efd39b590e519815ed43bb74cd7188 Mon Sep 17 00:00:00 2001 From: Glauber de Oliveira Costa Date: Wed, 30 Jan 2008 13:31:08 +0100 Subject: [PATCH] x86: unify load_segment macro This patch unifies the load_segment() macro, making them equal in both x86_64 and i386 architectures. The common version goes to system.h, and the old are deleted. Signed-off-by: Glauber de Oliveira Costa Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/system.h | 21 +++++++++++++++++++++ include/asm-x86/system_32.h | 22 ---------------------- include/asm-x86/system_64.h | 20 -------------------- 3 files changed, 21 insertions(+), 42 deletions(-) diff --git a/include/asm-x86/system.h b/include/asm-x86/system.h index d0803f8c70..3740bada09 100644 --- a/include/asm-x86/system.h +++ b/include/asm-x86/system.h @@ -38,6 +38,27 @@ __asm__ __volatile__ ("movw %%dx,%1\n\t" \ #define set_base(ldt, base) _set_base(((char *)&(ldt)) , (base)) #define set_limit(ldt, limit) _set_limit(((char *)&(ldt)) , ((limit)-1)) +/* + * Load a segment. Fall back on loading the zero + * segment if something goes wrong.. + */ +#define loadsegment(seg, value) \ + asm volatile("\n" \ + "1:\t" \ + "movl %k0,%%" #seg "\n" \ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "3:\t" \ + "movl %k1, %%" #seg "\n\t" \ + "jmp 2b\n" \ + ".previous\n" \ + ".section __ex_table,\"a\"\n\t" \ + _ASM_ALIGN "\n\t" \ + _ASM_PTR " 1b,3b\n" \ + ".previous" \ + : :"r" (value), "r" (0)) + + /* * Save a segment register away */ diff --git a/include/asm-x86/system_32.h b/include/asm-x86/system_32.h index fb457642ac..8db478984e 100644 --- a/include/asm-x86/system_32.h +++ b/include/asm-x86/system_32.h @@ -34,28 +34,6 @@ extern struct task_struct * FASTCALL(__switch_to(struct task_struct *prev, struc "2" (prev), "d" (next)); \ } while (0) -/* - * Load a segment. Fall back on loading the zero - * segment if something goes wrong.. - */ -#define loadsegment(seg,value) \ - asm volatile("\n" \ - "1:\t" \ - "mov %0,%%" #seg "\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3:\t" \ - "pushl $0\n\t" \ - "popl %%" #seg "\n\t" \ - "jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n\t" \ - ".align 4\n\t" \ - ".long 1b,3b\n" \ - ".previous" \ - : :"rm" (value)) - - static inline void native_clts(void) { asm volatile ("clts"); diff --git a/include/asm-x86/system_64.h b/include/asm-x86/system_64.h index cc5b2666a0..0885caace5 100644 --- a/include/asm-x86/system_64.h +++ b/include/asm-x86/system_64.h @@ -49,26 +49,6 @@ extern void load_gs_index(unsigned); -/* - * Load a segment. Fall back on loading the zero - * segment if something goes wrong.. - */ -#define loadsegment(seg,value) \ - asm volatile("\n" \ - "1:\t" \ - "movl %k0,%%" #seg "\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3:\t" \ - "movl %1,%%" #seg "\n\t" \ - "jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n\t" \ - ".align 8\n\t" \ - ".quad 1b,3b\n" \ - ".previous" \ - : :"r" (value), "r" (0)) - /* * Clear and set 'TS' bit respectively */ -- 2.39.5