mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 13:51:44 +00:00
d50efc6c40
introduce the "asmregparm" calling convention: for functions implemented in assembly with a fixed regparm input parameters calling convention. mark the semaphore and rwsem slowpath functions with that. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
26 lines
572 B
C
26 lines
572 B
C
#ifndef __ASM_LINKAGE_H
|
|
#define __ASM_LINKAGE_H
|
|
|
|
#ifdef CONFIG_X86_64
|
|
#define __ALIGN .p2align 4,,15
|
|
#define __ALIGN_STR ".p2align 4,,15"
|
|
#endif
|
|
|
|
#ifdef CONFIG_X86_32
|
|
#define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0)))
|
|
#define prevent_tail_call(ret) __asm__ ("" : "=r" (ret) : "0" (ret))
|
|
/*
|
|
* For 32-bit UML - mark functions implemented in assembly that use
|
|
* regparm input parameters:
|
|
*/
|
|
#define asmregparm __attribute__((regparm(3)))
|
|
#endif
|
|
|
|
#ifdef CONFIG_X86_ALIGNMENT_16
|
|
#define __ALIGN .align 16,0x90
|
|
#define __ALIGN_STR ".align 16,0x90"
|
|
#endif
|
|
|
|
#endif
|
|
|