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- /*
- * 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
- #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
-
- /* 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
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