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| author | Luis R. Rodriguez <mcgrof@kernel.org> | 2016-06-29 12:24:43 -0700 |
|---|---|---|
| committer | Luis R. Rodriguez <mcgrof@kernel.org> | 2016-06-29 17:29:05 -0700 |
| commit | 65b85f7b419b16416a53d94b9b3cd1c3e895341c (patch) | |
| tree | f62043f68977a8c31cea8e1cea65381a27df6f86 | |
| parent | c16aefb49f4e6281eae247c162d59e7f557069a5 (diff) | |
| download | linker-tables-65b85f7b419b16416a53d94b9b3cd1c3e895341c.tar.gz | |
asm-generic: add push_section_type() to be used on asm volatile() code
With generic section type solutions in place we need a general
asm solution for declaring entries with asm. The first easy target
is to cover the C asm declarations, guard the header file for now
with __ASSEMBLY__ and define a first generic entry push_section_type()
to be used later for custom section type annotations.
Architectures can override. As suggested by hpa and later confirmed by
Heiko for the extreme corner case concern on s390, just \n should work
across the board [0].
[0] https://lkml.kernel.org/r/20160226145603.GA3964@osiris
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
| -rw-r--r-- | arch/x86/include/asm/sections.h | 6 | ||||
| -rw-r--r-- | include/asm-generic/sections.h | 19 | ||||
| -rw-r--r-- | include/linux/sections.h | 2 |
3 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/include/asm/sections.h b/arch/x86/include/asm/sections.h new file mode 100644 index 0000000..a163c3d --- /dev/null +++ b/arch/x86/include/asm/sections.h @@ -0,0 +1,6 @@ +#ifndef _ASM_X86_SECTIONS_H +#define _ASM_X86_SECTIONS_H + +#include <asm-generic/sections.h> + +#endif /* _ASM_X86_SECTIONS_H */ diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h new file mode 100644 index 0000000..4b042db --- /dev/null +++ b/include/asm-generic/sections.h @@ -0,0 +1,19 @@ +#ifndef _ASM_GENERIC_SECTIONS_H_ +#define _ASM_GENERIC_SECTIONS_H_ + +#ifndef __ASSEMBLY__ +#include <linux/sections.h> + +#ifndef __push_section_type +#define __push_section_type(section, type, name, level, flags) \ + ".pushsection " #section "." #type "." #name "." #level ", \"" #flags "\"\n" +#endif + +#ifndef push_section_type +#define push_section_type(section, type, name, level, flags) \ + __push_section_type(section, type, name, level) +#endif + +#endif + +#endif /* _ASM_GENERIC_SECTIONS_H_ */ diff --git a/include/linux/sections.h b/include/linux/sections.h index f738844..36af3fa 100644 --- a/include/linux/sections.h +++ b/include/linux/sections.h @@ -1,6 +1,8 @@ #ifndef _LINUX_SECTIONS_H #define _LINUX_SECTIONS_H +#include <asm/sections.h> + #define SECTION_RODATA .rodata #define SECTION_TEXT .text #define SECTION_DATA .data |