linux/arch/alpha/kernel/asm-offsets.c
Eric W. Biederman 9a5e733990 [PATCH] alpha: Fix getxpid on alpha so it works for threads
While looking in the code I discovered that alpha has fallen behind because
it doesn't use sys_getppid.  The problem is that it doesn't follow the task
struct to the task_group_leader.

Acked-by: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01 08:53:21 -08:00

45 lines
1.5 KiB
C

/*
* Generate definitions needed by assembly language modules.
* This code generates raw asm output which is post-processed to extract
* and format the required data.
*/
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <asm/io.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
void foo(void)
{
DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
BLANK();
DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked));
DEFINE(TASK_UID, offsetof(struct task_struct, uid));
DEFINE(TASK_EUID, offsetof(struct task_struct, euid));
DEFINE(TASK_GID, offsetof(struct task_struct, gid));
DEFINE(TASK_EGID, offsetof(struct task_struct, egid));
DEFINE(TASK_REAL_PARENT, offsetof(struct task_struct, real_parent));
DEFINE(TASK_GROUP_LEADER, offsetof(struct task_struct, group_leader));
DEFINE(TASK_TGID, offsetof(struct task_struct, tgid));
BLANK();
DEFINE(SIZEOF_PT_REGS, sizeof(struct pt_regs));
DEFINE(PT_PTRACED, PT_PTRACED);
DEFINE(CLONE_VM, CLONE_VM);
DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
DEFINE(SIGCHLD, SIGCHLD);
BLANK();
DEFINE(HAE_CACHE, offsetof(struct alpha_machine_vector, hae_cache));
DEFINE(HAE_REG, offsetof(struct alpha_machine_vector, hae_register));
}