62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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/*
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* This program is used to generate definitions needed by
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* assembly language modules.
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*
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* We use the technique used in the OSF Mach kernel code:
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* generate asm statements containing #defines,
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* compile this file to assembler, and then extract the
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* #defines from the assembly-language output.
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*/
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#include <linux/stddef.h>
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#include <linux/sched.h>
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#include <linux/kernel_stat.h>
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#include <linux/ptrace.h>
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#include <linux/hardirq.h>
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#include <asm/irq.h>
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#include <asm/errno.h>
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#define DEFINE(sym, val) \
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asm volatile("\n->" #sym " %0 " #val : : "i" (val))
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#define BLANK() asm volatile("\n->" : : )
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int main (void)
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{
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/* offsets into the task struct */
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DEFINE (TASK_STATE, offsetof (struct task_struct, state));
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DEFINE (TASK_FLAGS, offsetof (struct task_struct, flags));
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DEFINE (TASK_PTRACE, offsetof (struct task_struct, ptrace));
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DEFINE (TASK_BLOCKED, offsetof (struct task_struct, blocked));
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DEFINE (TASK_THREAD, offsetof (struct task_struct, thread));
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DEFINE (TASK_THREAD_INFO, offsetof (struct task_struct, thread_info));
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DEFINE (TASK_MM, offsetof (struct task_struct, mm));
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DEFINE (TASK_ACTIVE_MM, offsetof (struct task_struct, active_mm));
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DEFINE (TASK_PID, offsetof (struct task_struct, pid));
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/* offsets into the kernel_stat struct */
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DEFINE (STAT_IRQ, offsetof (struct kernel_stat, irqs));
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/* signal defines */
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DEFINE (SIGSEGV, SIGSEGV);
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DEFINE (SEGV_MAPERR, SEGV_MAPERR);
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DEFINE (SIGTRAP, SIGTRAP);
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DEFINE (SIGCHLD, SIGCHLD);
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DEFINE (SIGILL, SIGILL);
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DEFINE (TRAP_TRACE, TRAP_TRACE);
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/* ptrace flag bits */
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DEFINE (PT_PTRACED, PT_PTRACED);
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DEFINE (PT_DTRACE, PT_DTRACE);
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/* error values */
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DEFINE (ENOSYS, ENOSYS);
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/* clone flag bits */
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DEFINE (CLONE_VFORK, CLONE_VFORK);
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DEFINE (CLONE_VM, CLONE_VM);
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return 0;
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}
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