diff options
Diffstat (limited to 'include/asm-arm/processor.h')
| -rw-r--r-- | include/asm-arm/processor.h | 76 |
1 files changed, 57 insertions, 19 deletions
diff --git a/include/asm-arm/processor.h b/include/asm-arm/processor.h index f4c687089..a59e441a1 100644 --- a/include/asm-arm/processor.h +++ b/include/asm-arm/processor.h @@ -7,12 +7,14 @@ #ifndef __ASM_ARM_PROCESSOR_H #define __ASM_ARM_PROCESSOR_H +#define FP_SIZE 35 + struct fp_hard_struct { - unsigned int save[140/4]; /* as yet undefined */ + unsigned int save[FP_SIZE]; /* as yet undefined */ }; struct fp_soft_struct { - unsigned int save[140/4]; /* undefined information */ + unsigned int save[FP_SIZE]; /* undefined information */ }; union fp_state { @@ -22,28 +24,59 @@ union fp_state { typedef unsigned long mm_segment_t; /* domain register */ -#define NR_DEBUGS 5 +#ifdef __KERNEL__ -#define DECLARE_THREAD_STRUCT \ -struct thread_struct { \ - unsigned long address; /* Address of fault */ \ - unsigned long trap_no; /* Trap number */ \ - unsigned long error_code; /* Error code of trap */ \ - union fp_state fpstate; /* FPE save state */ \ - unsigned long debug[NR_DEBUGS]; /* Debug/ptrace */ \ - EXTRA_THREAD_STRUCT \ -} +#include <asm/assembler.h> + +#define NR_DEBUGS 5 #include <asm/arch/processor.h> #include <asm/proc/processor.h> -#define INIT_TSS { \ - 0, \ - 0, \ - 0, \ - { { { 0, }, }, }, \ - { 0, }, \ - EXTRA_THREAD_STRUCT_INIT \ +struct thread_struct { + unsigned long address; /* Address of fault */ + unsigned long trap_no; /* Trap number */ + unsigned long error_code; /* Error code of trap */ + union fp_state fpstate; /* FPE save state */ + unsigned long debug[NR_DEBUGS]; /* Debug/ptrace */ + struct context_save_struct *save; /* context save */ + unsigned long memmap; /* page tables */ + EXTRA_THREAD_STRUCT +}; + +#define INIT_MMAP \ +{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL } + +#define INIT_TSS { \ + 0, \ + 0, \ + 0, \ + { { { 0, }, }, }, \ + { 0, }, \ + (struct context_save_struct *)0, \ + SWAPPER_PG_DIR \ + EXTRA_THREAD_STRUCT_INIT \ +} + +/* + * Return saved PC of a blocked thread. + */ +extern __inline__ unsigned long thread_saved_pc(struct thread_struct *t) +{ + return t->save ? t->save->pc & ~PCMASK : 0; +} + +extern __inline__ unsigned long get_css_fp(struct thread_struct *t) +{ + return t->save ? t->save->fp : 0; +} + +asmlinkage void ret_from_sys_call(void) __asm__("ret_from_sys_call"); + +extern __inline__ void init_thread_css(struct context_save_struct *save) +{ + *save = INIT_CSS; + save->pc |= (unsigned long)ret_from_sys_call; } /* Forward declaration, a strange C thing */ @@ -57,7 +90,12 @@ extern void release_thread(struct task_struct *); #define release_segments(mm) do { } while (0) #define forget_segments() do { } while (0) +extern struct task_struct *alloc_task_struct(void); +extern void free_task_struct(struct task_struct *); + #define init_task (init_task_union.task) #define init_stack (init_task_union.stack) +#endif + #endif /* __ASM_ARM_PROCESSOR_H */ |