[PATCH v5 05/23] arm64:ilp32: expose 'kernel_long' as 'long long' for ILP32
From: Yury Norov <hidden>
Date: 2015-09-29 22:16:15
Also in:
lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
From: Andrew Pinski <redacted>
Since we want time_t and some other userland types to be the same
between ILP32 and LP64, we define __kernel_long_t to be long long.
To reuse the bulk of LP64 system calls (and data structures), the LP64
kernel data types ('kernel_long', 'kernel_ulong') are exposed as their
ILP32 'long long' and 'unsigned long long' equivalents to allow glibc
to correctly interpret most data-structures used in the kernel ABI
(i.el with the exception of those, that include pointers).
Signed-off-by: Philipp Tomsich <redacted>
Signed-off-by: Christoph Muellner <redacted>
Signed-off-by: Yury Norov <redacted>
diff --git a/arch/arm64/include/uapi/asm/posix_types.h b/arch/arm64/include/uapi/asm/posix_types.h
index 7985ff6..d6a7cb5 100644
--- a/arch/arm64/include/uapi/asm/posix_types.h
+++ b/arch/arm64/include/uapi/asm/posix_types.h@@ -5,6 +5,16 @@ typedef unsigned short __kernel_old_uid_t; typedef unsigned short __kernel_old_gid_t; #define __kernel_old_uid_t __kernel_old_uid_t +#if defined(__ILP32__) +/* The ILP32 kernel ABI reuses LP64 system calls where possible; to + this end, the equivalent ILP32 type definitions are used (a 64bit + 'long'-type in LP64 corresponds to a 'long long' in LP64). */ + +typedef long long __kernel_long_t; +typedef unsigned long long __kernel_ulong_t; +#define __kernel_long_t __kernel_long_t +#endif /* defined(__ILP32__) */ + #include <asm-generic/posix_types.h> -#endif /* __ASM_POSIX_TYPES_H */ +#endif /* __ASM_POSIX_TYPES_H */
--
2.1.4