linux/arch/x86/lib/thunk_64.S
Sam Ravnborg c6c2d7a084 x86: fix usage of .section .sched.text in assembler code
Without this patch the linker will generate a section
named .sched.text.1 which is unexpected.
This is because the gcc generated section has "ax" but the
assembler usage of .sched.text lacks the "ax" specifier.

It would be better to have a definition we could use from
assembler code but I did not find a suitable header
file for it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30 13:33:37 +01:00

72 lines
1.6 KiB
ArmAsm

/*
* Save registers before calling assembly functions. This avoids
* disturbance of register allocation in some inline assembly constructs.
* Copyright 2001,2002 by Andi Kleen, SuSE Labs.
* Subject to the GNU public license, v.2. No warranty of any kind.
*/
#include <linux/linkage.h>
#include <asm/dwarf2.h>
#include <asm/calling.h>
#include <asm/rwlock.h>
/* rdi: arg1 ... normal C conventions. rax is saved/restored. */
.macro thunk name,func
.globl \name
\name:
CFI_STARTPROC
SAVE_ARGS
call \func
jmp restore
CFI_ENDPROC
.endm
/* rdi: arg1 ... normal C conventions. rax is passed from C. */
.macro thunk_retrax name,func
.globl \name
\name:
CFI_STARTPROC
SAVE_ARGS
call \func
jmp restore_norax
CFI_ENDPROC
.endm
.section .sched.text, "ax"
#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
thunk rwsem_down_read_failed_thunk,rwsem_down_read_failed
thunk rwsem_down_write_failed_thunk,rwsem_down_write_failed
thunk rwsem_wake_thunk,rwsem_wake
thunk rwsem_downgrade_thunk,rwsem_downgrade_wake
#endif
thunk __down_failed,__down
thunk_retrax __down_failed_interruptible,__down_interruptible
thunk_retrax __down_failed_trylock,__down_trylock
thunk __up_wakeup,__up
#ifdef CONFIG_TRACE_IRQFLAGS
thunk trace_hardirqs_on_thunk,trace_hardirqs_on
thunk trace_hardirqs_off_thunk,trace_hardirqs_off
#endif
#ifdef CONFIG_DEBUG_LOCK_ALLOC
thunk lockdep_sys_exit_thunk,lockdep_sys_exit
#endif
/* SAVE_ARGS below is used only for the .cfi directives it contains. */
CFI_STARTPROC
SAVE_ARGS
restore:
RESTORE_ARGS
ret
CFI_ENDPROC
CFI_STARTPROC
SAVE_ARGS
restore_norax:
RESTORE_ARGS 1
ret
CFI_ENDPROC