patch-2.3.16 linux/include/asm-sh/processor.h

• Lines: 115
• Date: Mon Aug 30 18:12:59 1999
• Orig file: v2.3.15/linux/include/asm-sh/processor.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.15/linux/include/asm-sh/processor.h linux/include/asm-sh/processor.h
@@ -0,0 +1,114 @@
+/*
+ * include/asm-sh/processor.h
+ *
+ * Copyright (C) 1999 Niibe Yutaka
+ */
+
+#ifndef __ASM_SH_PROCESSOR_H
+#define __ASM_SH_PROCESSOR_H
+
+#include <asm/page.h>
+#include <asm/types.h>
+#include <linux/threads.h>
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ void *pc; __asm__("mova	1f,%0\n1:":"=z" (pc)); pc; })
+
+/*
+ *  CPU type and hardware bug flags. Kept separately for each CPU.
+ */
+
+struct sh_cpuinfo {
+	unsigned long loops_per_sec;
+	unsigned long *pgd_quick;
+	unsigned long *pte_quick;
+	unsigned long pgtable_cache_sz;
+};
+
+extern struct sh_cpuinfo boot_cpu_data;
+
+#define cpu_data &boot_cpu_data
+#define current_cpu_data boot_cpu_data
+
+/*
+ * User space process size: 2GB.
+ */
+#define TASK_SIZE	0x80000000
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE	(TASK_SIZE / 3)
+
+struct thread_struct {
+	unsigned long sp;
+	unsigned long pc;
+
+	unsigned long trap_no, error_code;
+	unsigned long address;
+	/* Hardware debugging registers may come here */
+};
+
+#define INIT_MMAP \
+{ &init_mm, 0x80000000, 0xa0000000, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
+
+#define INIT_THREAD  {						\
+	sizeof(init_stack) + (long) &init_stack, /* sp */	\
+	0,					 /* pc */	\
+	0, 0, \
+}
+
+/*
+ * Do necessary setup to start up a newly executed thread.
+ */
+#define start_thread(regs, new_pc, new_sp)	 \
+	set_fs(USER_DS);			 \
+	regs->pr = 0;   		 	 \
+	regs->sr = 0;		/* User mode. */ \
+	regs->pc = new_pc;			 \
+	regs->u_regs[UREG_SP] = new_sp
+
+/* Forward declaration, a strange C thing */
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+/*
+ * Bus types
+ */
+#define EISA_bus 0
+#define EISA_bus__is_a_macro /* for versions in ksyms.c */
+#define MCA_bus 0
+#define MCA_bus__is_a_macro /* for versions in ksyms.c */
+
+
+/* Copy and release all segment info associated with a VM */
+#define copy_segments(p, mm)	do { } while(0)
+#define release_segments(mm)	do { } while(0)
+#define forget_segments()	do { } while (0)
+
+/*
+ * Return saved PC of a blocked thread.
+ */
+extern __inline__ unsigned long thread_saved_pc(struct thread_struct *t)
+{
+	return t->pc;
+}
+
+#define THREAD_SIZE (2*PAGE_SIZE)
+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 /* __ASM_SH_PROCESSOR_H */