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24a295e4ef
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, or when dealing with UAPI headers that rather should use __ASSEMBLER__ instead. So let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is mostly a mechanical patch (done with a simple "sed -i" statement), with some manual tweaks in <asm/frame.h>, <asm/hw_irq.h> and <asm/setup.h> that mentioned this macro in comments with some missing underscores. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Juergen Gross <jgross@suse.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250314071013.1575167-38-thuth@redhat.com
93 lines
2 KiB
C
93 lines
2 KiB
C
#ifndef _ASM_X86_UNWIND_HINTS_H
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#define _ASM_X86_UNWIND_HINTS_H
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#include <linux/objtool.h>
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#include "orc_types.h"
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#ifdef __ASSEMBLER__
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.macro UNWIND_HINT_END_OF_STACK
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UNWIND_HINT type=UNWIND_HINT_TYPE_END_OF_STACK
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.endm
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.macro UNWIND_HINT_UNDEFINED
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UNWIND_HINT type=UNWIND_HINT_TYPE_UNDEFINED
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.endm
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.macro UNWIND_HINT_ENTRY
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VALIDATE_UNRET_BEGIN
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UNWIND_HINT_END_OF_STACK
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.endm
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.macro UNWIND_HINT_REGS base=%rsp offset=0 indirect=0 extra=1 partial=0 signal=1
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.if \base == %rsp
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.if \indirect
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.set sp_reg, ORC_REG_SP_INDIRECT
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.else
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.set sp_reg, ORC_REG_SP
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.endif
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.elseif \base == %rbp
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.set sp_reg, ORC_REG_BP
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.elseif \base == %rdi
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.set sp_reg, ORC_REG_DI
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.elseif \base == %rdx
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.set sp_reg, ORC_REG_DX
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.elseif \base == %r10
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.set sp_reg, ORC_REG_R10
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.else
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.error "UNWIND_HINT_REGS: bad base register"
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.endif
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.set sp_offset, \offset
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.if \partial
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.set type, UNWIND_HINT_TYPE_REGS_PARTIAL
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.elseif \extra == 0
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.set type, UNWIND_HINT_TYPE_REGS_PARTIAL
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.set sp_offset, \offset + (16*8)
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.else
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.set type, UNWIND_HINT_TYPE_REGS
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.endif
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UNWIND_HINT sp_reg=sp_reg sp_offset=sp_offset type=type signal=\signal
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.endm
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.macro UNWIND_HINT_IRET_REGS base=%rsp offset=0 signal=1
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UNWIND_HINT_REGS base=\base offset=\offset partial=1 signal=\signal
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.endm
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.macro UNWIND_HINT_IRET_ENTRY base=%rsp offset=0 signal=1
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VALIDATE_UNRET_BEGIN
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UNWIND_HINT_IRET_REGS base=\base offset=\offset signal=\signal
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.endm
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.macro UNWIND_HINT_FUNC
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UNWIND_HINT sp_reg=ORC_REG_SP sp_offset=8 type=UNWIND_HINT_TYPE_FUNC
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.endm
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.macro UNWIND_HINT_SAVE
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UNWIND_HINT type=UNWIND_HINT_TYPE_SAVE
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.endm
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.macro UNWIND_HINT_RESTORE
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UNWIND_HINT type=UNWIND_HINT_TYPE_RESTORE
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.endm
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#else
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#define UNWIND_HINT_UNDEFINED \
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UNWIND_HINT(UNWIND_HINT_TYPE_UNDEFINED, 0, 0, 0)
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#define UNWIND_HINT_FUNC \
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UNWIND_HINT(UNWIND_HINT_TYPE_FUNC, ORC_REG_SP, 8, 0)
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#define UNWIND_HINT_SAVE \
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UNWIND_HINT(UNWIND_HINT_TYPE_SAVE, 0, 0, 0)
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#define UNWIND_HINT_RESTORE \
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UNWIND_HINT(UNWIND_HINT_TYPE_RESTORE, 0, 0, 0)
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#endif /* __ASSEMBLER__ */
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#endif /* _ASM_X86_UNWIND_HINTS_H */
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