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/* SPDX-License-Identifier: GPL-2.0 */
/*
* S390 version
* Copyright IBM Corp. 1999
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*
* Derived from "include/asm-i386/current.h"
*/
#ifndef _S390_CURRENT_H
#define _S390_CURRENT_H
#include <asm/lowcore.h>
#include <asm/machine.h>
struct task_struct;
static __always_inline struct task_struct *get_current(void)
{
unsigned long ptr, lc_current;
lc_current = offsetof(struct lowcore, current_task);
asm_inline(
ALTERNATIVE(" lg %[ptr],%[offzero](%%r0)\n",
" lg %[ptr],%[offalt](%%r0)\n",
ALT_FEATURE(MFEATURE_LOWCORE))
: [ptr] "=d" (ptr)
: [offzero] "i" (lc_current),
[offalt] "i" (lc_current + LOWCORE_ALT_ADDRESS));
return (struct task_struct *)ptr;
}
#define current get_current()
#endif /* !(_S390_CURRENT_H) */
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