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![Peter Zijlstra](/assets/img/avatar_default.png)
Replace all ret/retq instructions with RET in preparation of making RET a macro. Since AS is case insensitive it's a big no-op without RET defined. find arch/x86/ -name \*.S | while read file do sed -i 's/\<ret[q]*\>/RET/' $file done Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lore.kernel.org/r/20211204134907.905503893@infradead.org
38 lines
861 B
ArmAsm
38 lines
861 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_PREEMPTION
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THUNK preempt_schedule_thunk, preempt_schedule
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THUNK preempt_schedule_notrace_thunk, preempt_schedule_notrace
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EXPORT_SYMBOL(preempt_schedule_thunk)
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EXPORT_SYMBOL(preempt_schedule_notrace_thunk)
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#endif
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