mirror of https://gitee.com/openkylin/linux.git
52 lines
1.1 KiB
ArmAsm
52 lines
1.1 KiB
ArmAsm
/*
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* Trampoline to trace irqs off. (otherwise CALLER_ADDR1 might crash)
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* Copyright 2008 by Steven Rostedt, Red Hat, Inc
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* (inspired by Andi Kleen's thunk_64.S)
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* Subject to the GNU public license, v.2. No warranty of any kind.
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*/
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#include <linux/linkage.h>
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#include <asm/asm.h>
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#include <asm/dwarf2.h>
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/* put return address in eax (arg1) */
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.macro THUNK name, func, put_ret_addr_in_eax=0
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.globl \name
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\name:
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CFI_STARTPROC
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pushl_cfi %eax
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CFI_REL_OFFSET eax, 0
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pushl_cfi %ecx
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CFI_REL_OFFSET ecx, 0
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pushl_cfi %edx
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CFI_REL_OFFSET edx, 0
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.if \put_ret_addr_in_eax
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/* Place EIP in the arg1 */
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movl 3*4(%esp), %eax
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.endif
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call \func
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popl_cfi %edx
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CFI_RESTORE edx
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popl_cfi %ecx
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CFI_RESTORE ecx
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popl_cfi %eax
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CFI_RESTORE eax
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ret
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CFI_ENDPROC
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_ASM_NOKPROBE(\name)
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.endm
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#ifdef CONFIG_TRACE_IRQFLAGS
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THUNK trace_hardirqs_on_thunk,trace_hardirqs_on_caller,1
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THUNK trace_hardirqs_off_thunk,trace_hardirqs_off_caller,1
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#endif
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#ifdef CONFIG_PREEMPT
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THUNK ___preempt_schedule, preempt_schedule
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#ifdef CONFIG_CONTEXT_TRACKING
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THUNK ___preempt_schedule_context, preempt_schedule_context
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#endif
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#endif
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