Linux Kernel  3.7.1
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asm-offsets.c
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1 /*
2  * This program is used to generate definitions needed by
3  * assembly language modules.
4  *
5  * We use the technique used in the OSF Mach kernel code:
6  * generate asm statements containing #defines,
7  * compile this file to assembler, and then extract the
8  * #defines from the assembly-language output.
9  */
10 
11 #include <linux/stddef.h>
12 #include <linux/sched.h>
13 #include <linux/kernel_stat.h>
14 #include <linux/ptrace.h>
15 #include <linux/hardirq.h>
16 #include <linux/kbuild.h>
17 #include <asm/bootinfo.h>
18 #include <asm/irq.h>
19 #include <asm/ptrace.h>
20 
21 int main(void)
22 {
23  /* offsets into the task struct */
24  DEFINE(TASK_STATE, offsetof(struct task_struct, state));
25  DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
26  DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
27  DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
28  DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
29  DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, stack));
30  DEFINE(TASK_MM, offsetof(struct task_struct, mm));
31  DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
32 
33  /* offsets into the irq_cpustat_t struct */
34  DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending));
35 
36  /* offsets into the thread struct */
37  DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
38  DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
39  DEFINE(THREAD_CCR, offsetof(struct thread_struct, ccr));
40 
41  /* offsets into the pt_regs struct */
42  DEFINE(LER0, offsetof(struct pt_regs, er0) - sizeof(long));
43  DEFINE(LER1, offsetof(struct pt_regs, er1) - sizeof(long));
44  DEFINE(LER2, offsetof(struct pt_regs, er2) - sizeof(long));
45  DEFINE(LER3, offsetof(struct pt_regs, er3) - sizeof(long));
46  DEFINE(LER4, offsetof(struct pt_regs, er4) - sizeof(long));
47  DEFINE(LER5, offsetof(struct pt_regs, er5) - sizeof(long));
48  DEFINE(LER6, offsetof(struct pt_regs, er6) - sizeof(long));
49  DEFINE(LORIG, offsetof(struct pt_regs, orig_er0) - sizeof(long));
50  DEFINE(LCCR, offsetof(struct pt_regs, ccr) - sizeof(long));
51  DEFINE(LVEC, offsetof(struct pt_regs, vector) - sizeof(long));
52 #if defined(__H8300S__)
53  DEFINE(LEXR, offsetof(struct pt_regs, exr) - sizeof(long));
54 #endif
55  DEFINE(LRET, offsetof(struct pt_regs, pc) - sizeof(long));
56 
58 
59  return 0;
60 }