acrn-kernel/arch/sparc/kernel/asm-offsets.c

46 lines
1.5 KiB
C

/*
* This program is used to generate definitions needed by
* assembly language modules.
*
* We use the technique used in the OSF Mach kernel code:
* generate asm statements containing #defines,
* compile this file to assembler, and then extract the
* #defines from the assembly-language output.
*
* On sparc, thread_info data is static and TI_XXX offsets are computed by hand.
*/
#include <linux/config.h>
#include <linux/sched.h>
// #include <linux/mm.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
int foo(void)
{
DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
BLANK();
/* XXX This is the stuff for sclow.S, kill it. */
DEFINE(AOFF_task_pid, offsetof(struct task_struct, pid));
DEFINE(AOFF_task_uid, offsetof(struct task_struct, uid));
DEFINE(AOFF_task_gid, offsetof(struct task_struct, gid));
DEFINE(AOFF_task_euid, offsetof(struct task_struct, euid));
DEFINE(AOFF_task_egid, offsetof(struct task_struct, egid));
/* DEFINE(THREAD_INFO, offsetof(struct task_struct, thread_info)); */
DEFINE(ASIZ_task_uid, sizeof(current->uid));
DEFINE(ASIZ_task_gid, sizeof(current->gid));
DEFINE(ASIZ_task_euid, sizeof(current->euid));
DEFINE(ASIZ_task_egid, sizeof(current->egid));
BLANK();
DEFINE(AOFF_thread_fork_kpsr,
offsetof(struct thread_struct, fork_kpsr));
BLANK();
DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
/* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
return 0;
}