unicore32: get rid of zeroing and switch to RAW_COPY_USER (2ef59f28) · Commits · 戴 / test

arch/unicore32/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ config UNICORE32
		select ARCH_WANT_FRAME_POINTERS
		select GENERIC_IOMAP
		select MODULES_USE_ELF_REL
		select ARCH_HAS_RAW_COPY_USER
		help
		UniCore-32 is 32-bit Instruction Set Architecture,
		including a series of low-power-consumption RISC chip

+4 −2

Original line number	Diff line number	Diff line
		@@ -24,15 +24,17 @@
		#define __access_ok(addr, size) (__kernel_ok \|\| __user_ok((addr), (size)))

		extern unsigned long __must_check
		__copy_from_user(void to, const void __user from, unsigned long n);
		raw_copy_from_user(void to, const void __user from, unsigned long n);
		extern unsigned long __must_check
		__copy_to_user(void __user to, const void from, unsigned long n);
		raw_copy_to_user(void __user to, const void from, unsigned long n);
		extern unsigned long __must_check
		__clear_user(void __user *addr, unsigned long n);
		extern unsigned long __must_check
		__strncpy_from_user(char to, const char __user from, unsigned long count);
		extern unsigned long
		__strnlen_user(const char __user *s, long n);
		#define INLINE_COPY_FROM_USER
		#define INLINE_COPY_TO_USER

		#include <asm-generic/uaccess.h>

+2 −2

Original line number	Diff line number	Diff line
		@@ -46,8 +46,8 @@ EXPORT_SYMBOL(__strncpy_from_user);

		EXPORT_SYMBOL(copy_page);

		EXPORT_SYMBOL(__copy_from_user);
		EXPORT_SYMBOL(__copy_to_user);
		EXPORT_SYMBOL(raw_copy_from_user);
		EXPORT_SYMBOL(raw_copy_to_user);
		EXPORT_SYMBOL(__clear_user);

		EXPORT_SYMBOL(__ashldi3);

+6 −10

Original line number	Diff line number	Diff line
		@@ -16,7 +16,7 @@
		/*
		* Prototype:
		*
		* size_t __copy_from_user(void to, const void from, size_t n)
		* size_t raw_copy_from_user(void to, const void from, size_t n)
		*
		* Purpose:
		*
		@@ -87,22 +87,18 @@

		.text

		ENTRY(__copy_from_user)
		ENTRY(raw_copy_from_user)

		#include "copy_template.S"

		ENDPROC(__copy_from_user)
		ENDPROC(raw_copy_from_user)

		.pushsection .fixup,"ax"
		.align 0
		copy_abort_preamble
		ldm.w (r1, r2), [sp]+
		sub r3, r0, r1
		rsub r2, r3, r2
		stw r2, [sp]
		mov r1, #0
		b.l memset
		ldw.w r0, [sp]+, #4
		ldm.w (r1, r2, r3), [sp]+
		sub r0, r0, r1
		rsub r0, r0, r2
		copy_abort_end
		.popsection

+3 −3

Original line number	Diff line number	Diff line
		@@ -16,7 +16,7 @@
		/*
		* Prototype:
		*
		* size_t __copy_to_user(void to, const void from, size_t n)
		* size_t raw_copy_to_user(void to, const void from, size_t n)
		*
		* Purpose:
		*
		@@ -79,11 +79,11 @@

		.text

		WEAK(__copy_to_user)
		WEAK(raw_copy_to_user)

		#include "copy_template.S"

		ENDPROC(__copy_to_user)
		ENDPROC(raw_copy_to_user)

		.pushsection .fixup,"ax"
		.align 0