mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-01-18 04:20:44 +00:00
74db6cc331
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembler code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This is bad since macros starting with two underscores are names that are reserved by the C language. It can also be very confusing for the developers when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize now on the __ASSEMBLER__ macro that is provided by the compilers. This is almost a completely mechanical patch (done with a simple "sed -i" statement), apart from tweaking two comments manually in arch/powerpc/include/asm/bug.h and arch/powerpc/include/asm/kasan.h (which did not have proper underscores at the end) and fixing a checkpatch error about spaces in arch/powerpc/include/asm/spu_csa.h. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20250801082007.32904-3-thuth@redhat.com
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ARCH_POWERPC_EXTABLE_H
|
|
#define _ARCH_POWERPC_EXTABLE_H
|
|
|
|
/*
|
|
* The exception table consists of pairs of relative addresses: the first is
|
|
* the address of an instruction that is allowed to fault, and the second is
|
|
* the address at which the program should continue. No registers are
|
|
* modified, so it is entirely up to the continuation code to figure out what
|
|
* to do.
|
|
*
|
|
* All the routines below use bits of fixup code that are out of line with the
|
|
* main instruction path. This means when everything is well, we don't even
|
|
* have to jump over them. Further, they do not intrude on our cache or tlb
|
|
* entries.
|
|
*/
|
|
|
|
#define ARCH_HAS_RELATIVE_EXTABLE
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
struct exception_table_entry {
|
|
int insn;
|
|
int fixup;
|
|
};
|
|
|
|
static inline unsigned long extable_fixup(const struct exception_table_entry *x)
|
|
{
|
|
return (unsigned long)&x->fixup + x->fixup;
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Helper macro for exception table entries
|
|
*/
|
|
#define EX_TABLE(_fault, _target) \
|
|
stringify_in_c(.section __ex_table,"a";)\
|
|
stringify_in_c(.balign 4;) \
|
|
stringify_in_c(.long (_fault) - . ;) \
|
|
stringify_in_c(.long (_target) - . ;) \
|
|
stringify_in_c(.previous)
|
|
|
|
#endif
|