7b2330a339
commit cd4d09ec6f6c12a2cc3db5b7d8876a325a53545b upstream Move them to a separate header and have the following dependency: x86/cpufeatures.h <- x86/processor.h <- x86/cpufeature.h This makes it easier to use the header in asm code and not include the whole cpufeature.h and add guards for asm. Suggested-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1453842730-28463-5-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Srivatsa S. Bhat <srivatsa@csail.mit.edu> Reviewed-by: Matt Helsley (VMware) <matt.helsley@gmail.com> Reviewed-by: Alexey Makhalov <amakhalov@vmware.com> Reviewed-by: Bo Gan <ganb@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
48 lines
1.2 KiB
ArmAsm
48 lines
1.2 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/stringify.h>
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#include <linux/linkage.h>
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#include <asm/dwarf2.h>
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#include <asm/cpufeatures.h>
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#include <asm/alternative-asm.h>
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#include <asm-generic/export.h>
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#include <asm/nospec-branch.h>
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.macro THUNK reg
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.section .text.__x86.indirect_thunk
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ENTRY(__x86_indirect_thunk_\reg)
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CFI_STARTPROC
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JMP_NOSPEC %\reg
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CFI_ENDPROC
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ENDPROC(__x86_indirect_thunk_\reg)
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.endm
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/*
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* Despite being an assembler file we can't just use .irp here
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* because __KSYM_DEPS__ only uses the C preprocessor and would
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* only see one instance of "__x86_indirect_thunk_\reg" rather
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* than one per register with the correct names. So we do it
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* the simple and nasty way...
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*/
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#define __EXPORT_THUNK(sym) _ASM_NOKPROBE(sym); EXPORT_SYMBOL(sym)
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#define EXPORT_THUNK(reg) __EXPORT_THUNK(__x86_indirect_thunk_ ## reg)
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#define GENERATE_THUNK(reg) THUNK reg ; EXPORT_THUNK(reg)
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GENERATE_THUNK(_ASM_AX)
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GENERATE_THUNK(_ASM_BX)
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GENERATE_THUNK(_ASM_CX)
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GENERATE_THUNK(_ASM_DX)
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GENERATE_THUNK(_ASM_SI)
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GENERATE_THUNK(_ASM_DI)
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GENERATE_THUNK(_ASM_BP)
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#ifdef CONFIG_64BIT
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GENERATE_THUNK(r8)
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GENERATE_THUNK(r9)
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GENERATE_THUNK(r10)
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GENERATE_THUNK(r11)
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GENERATE_THUNK(r12)
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GENERATE_THUNK(r13)
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GENERATE_THUNK(r14)
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GENERATE_THUNK(r15)
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#endif
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