patch-2.4.20 linux-2.4.20/arch/x86_64/tools/offset.c

• Lines: 72
• Date: Thu Nov 28 15:53:12 2002
• Orig file: linux-2.4.19/arch/x86_64/tools/offset.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/arch/x86_64/tools/offset.c linux-2.4.20/arch/x86_64/tools/offset.c
@@ -0,0 +1,71 @@
+/* Written 2000 by Andi Kleen */
+/* This program is never executed, just its assembly is examined for offsets 
+   (this trick is needed to get cross compiling right) */  
+/* $Id: offset.c,v 1.16 2002/07/18 13:41:46 ak Exp $ */
+#define ASM_OFFSET_H 1
+#ifndef __KERNEL__
+#define __KERNEL__ 
+#endif
+#include <linux/sched.h> 
+#include <linux/stddef.h>
+#include <linux/errno.h> 
+#include <asm/pda.h>
+#include <asm/hardirq.h>
+#include <asm/processor.h>
+#include <asm/desc.h>
+
+#define output(x) asm volatile ("--- " x)
+#define outconst(x,y) asm volatile ("--- " x : : "i" (y)) 
+
+int main(void) 
+{ 
+	output("/* Auto generated by arch/../tools/offset.c at " __DATE__ ". Do not edit. */\n"); 
+	output("#ifndef ASM_OFFSET_H\n");
+	output("#define ASM_OFFSET_H 1\n"); 
+
+	// task struct entries needed by entry.S
+#define ENTRY(entry) outconst("#define tsk_" #entry " %0", offsetof(struct task_struct, entry))
+	ENTRY(state);
+	ENTRY(flags); 
+	ENTRY(sigpending); 
+	ENTRY(addr_limit); 
+	ENTRY(need_resched); 
+	ENTRY(exec_domain); 
+	ENTRY(ptrace); 
+	ENTRY(processor);
+	ENTRY(need_resched); 
+	ENTRY(thread); 
+#undef ENTRY
+#define ENTRY(entry) outconst("#define pda_" #entry " %0", offsetof(struct x8664_pda, entry))
+	ENTRY(kernelstack); 
+	ENTRY(oldrsp); 
+	ENTRY(pcurrent); 
+	ENTRY(irqrsp);
+	ENTRY(irqcount);
+	ENTRY(pgd_quick);
+	ENTRY(pmd_quick);
+	ENTRY(pte_quick);
+	ENTRY(pgtable_cache_sz);
+	ENTRY(cpunumber);
+	ENTRY(irqstackptr);
+	ENTRY(level4_pgt);
+#undef ENTRY
+	output("#ifdef __ASSEMBLY__"); 
+	outconst("#define PT_TRACESYS %0", PT_TRACESYS);
+	outconst("#define TASK_SIZE %0", TASK_SIZE); 
+	outconst("#define SIGCHLD %0", SIGCHLD);
+	outconst("#define CLONE_VFORK %0", CLONE_VFORK); 
+	outconst("#define CLONE_VM %0", CLONE_VM); 
+
+
+	outconst("#define thread_flags %0" , offsetof(struct thread_struct, flags));
+	outconst("#define ASM_THREAD_IA32 %0", THREAD_IA32);
+
+	outconst("#define PER_CPU_GDT_SIZE %0", sizeof(struct per_cpu_gdt)); 
+	output("#endif"); 
+
+	output("#endif\n"); 
+
+	return(0); 
+} 
+