diff options
Diffstat (limited to 'arch/x86/include/asm/thread_info.h')
| -rw-r--r-- | arch/x86/include/asm/thread_info.h | 53 |
1 files changed, 5 insertions, 48 deletions
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index e1940c06ed02..47e5de25ba79 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -9,6 +9,7 @@ #include <linux/compiler.h> #include <asm/page.h> +#include <asm/percpu.h> #include <asm/types.h> /* @@ -32,12 +33,6 @@ struct thread_info { mm_segment_t addr_limit; struct restart_block restart_block; void __user *sysenter_return; -#ifdef CONFIG_X86_32 - unsigned long previous_esp; /* ESP of the previous stack in - case of nested (IRQ) stacks - */ - __u8 supervisor_stack[0]; -#endif unsigned int sig_on_uaccess_error:1; unsigned int uaccess_err:1; /* uaccess failed */ }; @@ -153,9 +148,9 @@ struct thread_info { #define _TIF_WORK_CTXSW_PREV (_TIF_WORK_CTXSW|_TIF_USER_RETURN_NOTIFY) #define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW) -#ifdef CONFIG_X86_32 +#define STACK_WARN (THREAD_SIZE/8) +#define KERNEL_STACK_OFFSET (5*(BITS_PER_LONG/8)) -#define STACK_WARN (THREAD_SIZE/8) /* * macros/functions for gaining access to the thread information structure * @@ -163,42 +158,6 @@ struct thread_info { */ #ifndef __ASSEMBLY__ -#define current_stack_pointer ({ \ - unsigned long sp; \ - asm("mov %%esp,%0" : "=g" (sp)); \ - sp; \ -}) - -/* how to get the thread information struct from C */ -static inline struct thread_info *current_thread_info(void) -{ - return (struct thread_info *) - (current_stack_pointer & ~(THREAD_SIZE - 1)); -} - -#else /* !__ASSEMBLY__ */ - -/* how to get the thread information struct from ASM */ -#define GET_THREAD_INFO(reg) \ - movl $-THREAD_SIZE, reg; \ - andl %esp, reg - -/* use this one if reg already contains %esp */ -#define GET_THREAD_INFO_WITH_ESP(reg) \ - andl $-THREAD_SIZE, reg - -#endif - -#else /* X86_32 */ - -#include <asm/percpu.h> -#define KERNEL_STACK_OFFSET (5*8) - -/* - * macros/functions for gaining access to the thread information structure - * preempt_count needs to be 1 initially, until the scheduler is functional. - */ -#ifndef __ASSEMBLY__ DECLARE_PER_CPU(unsigned long, kernel_stack); static inline struct thread_info *current_thread_info(void) @@ -213,8 +172,8 @@ static inline struct thread_info *current_thread_info(void) /* how to get the thread information struct from ASM */ #define GET_THREAD_INFO(reg) \ - movq PER_CPU_VAR(kernel_stack),reg ; \ - subq $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg + _ASM_MOV PER_CPU_VAR(kernel_stack),reg ; \ + _ASM_SUB $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg ; /* * Same if PER_CPU_VAR(kernel_stack) is, perhaps with some offset, already in @@ -224,8 +183,6 @@ static inline struct thread_info *current_thread_info(void) #endif -#endif /* !X86_32 */ - /* * Thread-synchronous status. * |