mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
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
148 lines
2 KiB
C
148 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Generate .byte code for some instructions not supported by old
|
|
* binutils.
|
|
*/
|
|
#ifndef X86_ASM_INST_H
|
|
#define X86_ASM_INST_H
|
|
|
|
#ifdef __ASSEMBLER__
|
|
|
|
#define REG_NUM_INVALID 100
|
|
|
|
#define REG_TYPE_R32 0
|
|
#define REG_TYPE_R64 1
|
|
#define REG_TYPE_INVALID 100
|
|
|
|
.macro R32_NUM opd r32
|
|
\opd = REG_NUM_INVALID
|
|
.ifc \r32,%eax
|
|
\opd = 0
|
|
.endif
|
|
.ifc \r32,%ecx
|
|
\opd = 1
|
|
.endif
|
|
.ifc \r32,%edx
|
|
\opd = 2
|
|
.endif
|
|
.ifc \r32,%ebx
|
|
\opd = 3
|
|
.endif
|
|
.ifc \r32,%esp
|
|
\opd = 4
|
|
.endif
|
|
.ifc \r32,%ebp
|
|
\opd = 5
|
|
.endif
|
|
.ifc \r32,%esi
|
|
\opd = 6
|
|
.endif
|
|
.ifc \r32,%edi
|
|
\opd = 7
|
|
.endif
|
|
#ifdef CONFIG_X86_64
|
|
.ifc \r32,%r8d
|
|
\opd = 8
|
|
.endif
|
|
.ifc \r32,%r9d
|
|
\opd = 9
|
|
.endif
|
|
.ifc \r32,%r10d
|
|
\opd = 10
|
|
.endif
|
|
.ifc \r32,%r11d
|
|
\opd = 11
|
|
.endif
|
|
.ifc \r32,%r12d
|
|
\opd = 12
|
|
.endif
|
|
.ifc \r32,%r13d
|
|
\opd = 13
|
|
.endif
|
|
.ifc \r32,%r14d
|
|
\opd = 14
|
|
.endif
|
|
.ifc \r32,%r15d
|
|
\opd = 15
|
|
.endif
|
|
#endif
|
|
.endm
|
|
|
|
.macro R64_NUM opd r64
|
|
\opd = REG_NUM_INVALID
|
|
#ifdef CONFIG_X86_64
|
|
.ifc \r64,%rax
|
|
\opd = 0
|
|
.endif
|
|
.ifc \r64,%rcx
|
|
\opd = 1
|
|
.endif
|
|
.ifc \r64,%rdx
|
|
\opd = 2
|
|
.endif
|
|
.ifc \r64,%rbx
|
|
\opd = 3
|
|
.endif
|
|
.ifc \r64,%rsp
|
|
\opd = 4
|
|
.endif
|
|
.ifc \r64,%rbp
|
|
\opd = 5
|
|
.endif
|
|
.ifc \r64,%rsi
|
|
\opd = 6
|
|
.endif
|
|
.ifc \r64,%rdi
|
|
\opd = 7
|
|
.endif
|
|
.ifc \r64,%r8
|
|
\opd = 8
|
|
.endif
|
|
.ifc \r64,%r9
|
|
\opd = 9
|
|
.endif
|
|
.ifc \r64,%r10
|
|
\opd = 10
|
|
.endif
|
|
.ifc \r64,%r11
|
|
\opd = 11
|
|
.endif
|
|
.ifc \r64,%r12
|
|
\opd = 12
|
|
.endif
|
|
.ifc \r64,%r13
|
|
\opd = 13
|
|
.endif
|
|
.ifc \r64,%r14
|
|
\opd = 14
|
|
.endif
|
|
.ifc \r64,%r15
|
|
\opd = 15
|
|
.endif
|
|
#endif
|
|
.endm
|
|
|
|
.macro REG_TYPE type reg
|
|
R32_NUM reg_type_r32 \reg
|
|
R64_NUM reg_type_r64 \reg
|
|
.if reg_type_r64 <> REG_NUM_INVALID
|
|
\type = REG_TYPE_R64
|
|
.elseif reg_type_r32 <> REG_NUM_INVALID
|
|
\type = REG_TYPE_R32
|
|
.else
|
|
\type = REG_TYPE_INVALID
|
|
.endif
|
|
.endm
|
|
|
|
.macro PFX_REX opd1 opd2 W=0
|
|
.if ((\opd1 | \opd2) & 8) || \W
|
|
.byte 0x40 | ((\opd1 & 8) >> 3) | ((\opd2 & 8) >> 1) | (\W << 3)
|
|
.endif
|
|
.endm
|
|
|
|
.macro MODRM mod opd1 opd2
|
|
.byte \mod | (\opd1 & 7) | ((\opd2 & 7) << 3)
|
|
.endm
|
|
#endif
|
|
|
|
#endif
|