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76dc6d6001
Place SYM_*_START_NOALIGN and SYM_*_END around the THUNK macro body. Preserve @function by FUNC (64bit) and CODE (32bit). Given it was not marked as aligned, use NOALIGN. The result: Value Size Type Bind Vis Ndx Name 0000 28 FUNC GLOBAL DEFAULT 1 trace_hardirqs_on_thunk 001c 28 FUNC GLOBAL DEFAULT 1 trace_hardirqs_off_thunk 0038 24 FUNC GLOBAL DEFAULT 1 lockdep_sys_exit_thunk 0050 24 FUNC GLOBAL DEFAULT 1 ___preempt_schedule 0068 24 FUNC GLOBAL DEFAULT 1 ___preempt_schedule_notra The annotation of .L_restore does not generate anything (at the moment). Here, it just serves documentation purposes (as opening and closing brackets of functions). Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-arch@vger.kernel.org Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20191011115108.12392-5-jslaby@suse.cz
43 lines
1,004 B
ArmAsm
43 lines
1,004 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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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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*/
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#include <linux/linkage.h>
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#include <asm/asm.h>
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#include <asm/export.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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SYM_CODE_START_NOALIGN(\name)
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pushl %eax
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pushl %ecx
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pushl %edx
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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 %edx
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popl %ecx
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popl %eax
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ret
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_ASM_NOKPROBE(\name)
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SYM_CODE_END(\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_PREEMPTION
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THUNK ___preempt_schedule, preempt_schedule
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THUNK ___preempt_schedule_notrace, preempt_schedule_notrace
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EXPORT_SYMBOL(___preempt_schedule)
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EXPORT_SYMBOL(___preempt_schedule_notrace)
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#endif
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