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Kernel
提交 c12a1d7a 编写于 作者: A Al Viro
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mips: consolidate __invoke_... wrappers 

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
上级 f0a955f4
隐藏空白更改
内联 并排
Showing with 44 addition and 100 deletion
arch/mips/include/asm/uaccess.h
浏览文件 @ c12a1d7a
......@@ -797,8 +797,30 @@ extern void __put_user_unaligned_unknown(void);
extern size_t __copy_user(void *__to, const void *__from, size_t __n);
#ifndef CONFIG_EVA
#define __invoke_copy_to_user(to, from, n) \
#define __invoke_copy_from(func, to, from, n) \
({ \
register void *__cu_to_r __asm__("$4"); \
register const void __user *__cu_from_r __asm__("$5"); \
register long __cu_len_r __asm__("$6"); \
\
__cu_to_r = (to); \
__cu_from_r = (from); \
__cu_len_r = (n); \
__asm__ __volatile__( \
".set\tnoreorder\n\t" \
__MODULE_JAL(func) \
".set\tnoat\n\t" \
__UA_ADDU "\t$1, %1, %2\n\t" \
".set\tat\n\t" \
".set\treorder" \
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$14", "$15", "$24", "$31", \
DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})
#define __invoke_copy_to(func, to, from, n) \
({ \
register void __user *__cu_to_r __asm__("$4"); \
register const void *__cu_from_r __asm__("$5"); \
......@@ -808,7 +830,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n);
__cu_from_r = (from); \
__cu_len_r = (n); \
__asm__ __volatile__( \
__MODULE_JAL(__copy_user) \
__MODULE_JAL(func) \
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$14", "$15", "$24", "$31", \
......@@ -816,8 +838,12 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n);
__cu_len_r; \
})
#ifndef CONFIG_EVA
#define __invoke_copy_to_user(to, from, n) \
__invoke_copy_to(__copy_user, to, from, n)
#define __invoke_copy_to_kernel(to, from, n) \
__invoke_copy_to_user(to, from, n)
__invoke_copy_to(__copy_user, to, from, n)
#endif
......@@ -948,64 +974,24 @@ extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
#ifndef CONFIG_EVA
#define __invoke_copy_from_user(to, from, n) \
({ \
register void *__cu_to_r __asm__("$4"); \
register const void __user *__cu_from_r __asm__("$5"); \
register long __cu_len_r __asm__("$6"); \
\
__cu_to_r = (to); \
__cu_from_r = (from); \
__cu_len_r = (n); \
__asm__ __volatile__( \
".set\tnoreorder\n\t" \
__MODULE_JAL(__copy_user) \
".set\tnoat\n\t" \
__UA_ADDU "\t$1, %1, %2\n\t" \
".set\tat\n\t" \
".set\treorder" \
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$14", "$15", "$24", "$31", \
DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})
__invoke_copy_from(__copy_user, to, from, n)
#define __invoke_copy_from_kernel(to, from, n) \
__invoke_copy_from_user(to, from, n)
__invoke_copy_from(__copy_user, to, from, n)
/* For userland <-> userland operations */
#define ___invoke_copy_in_user(to, from, n) \
__invoke_copy_from_user(to, from, n)
__invoke_copy_from(__copy_user, to, from, n)
/* For kernel <-> kernel operations */
#define ___invoke_copy_in_kernel(to, from, n) \
__invoke_copy_from_user(to, from, n)
__invoke_copy_from(__copy_user, to, from, n)
#define __invoke_copy_from_user_inatomic(to, from, n) \
({ \
register void *__cu_to_r __asm__("$4"); \
register const void __user *__cu_from_r __asm__("$5"); \
register long __cu_len_r __asm__("$6"); \
\
__cu_to_r = (to); \
__cu_from_r = (from); \
__cu_len_r = (n); \
__asm__ __volatile__( \
".set\tnoreorder\n\t" \
__MODULE_JAL(__copy_user_inatomic) \
".set\tnoat\n\t" \
__UA_ADDU "\t$1, %1, %2\n\t" \
".set\tat\n\t" \
".set\treorder" \
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$14", "$15", "$24", "$31", \
DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})
__invoke_copy_from(__copy_user_inatomic, to, from, n)
#define __invoke_copy_from_kernel_inatomic(to, from, n) \
__invoke_copy_from_user_inatomic(to, from, n) \
__invoke_copy_from(__copy_user_inatomic, to, from, n)
#else
......@@ -1019,79 +1005,37 @@ extern size_t __copy_to_user_eva(void *__to, const void *__from,
size_t __n);
extern size_t __copy_in_user_eva(void *__to, const void *__from, size_t __n);
#define __invoke_copy_from_user_eva_generic(to, from, n, func_ptr) \
({ \
register void *__cu_to_r __asm__("$4"); \
register const void __user *__cu_from_r __asm__("$5"); \
register long __cu_len_r __asm__("$6"); \
\
__cu_to_r = (to); \
__cu_from_r = (from); \
__cu_len_r = (n); \
__asm__ __volatile__( \
".set\tnoreorder\n\t" \
__MODULE_JAL(func_ptr) \
".set\tnoat\n\t" \
__UA_ADDU "\t$1, %1, %2\n\t" \
".set\tat\n\t" \
".set\treorder" \
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$14", "$15", "$24", "$31", \
DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})
#define __invoke_copy_to_user_eva_generic(to, from, n, func_ptr) \
({ \
register void *__cu_to_r __asm__("$4"); \
register const void __user *__cu_from_r __asm__("$5"); \
register long __cu_len_r __asm__("$6"); \
\
__cu_to_r = (to); \
__cu_from_r = (from); \
__cu_len_r = (n); \
__asm__ __volatile__( \
__MODULE_JAL(func_ptr) \
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$14", "$15", "$24", "$31", \
DADDI_SCRATCH, "memory"); \
__cu_len_r; \
})
/*
* Source or destination address is in userland. We need to go through
* the TLB
*/
#define __invoke_copy_from_user(to, from, n) \
__invoke_copy_from_user_eva_generic(to, from, n, __copy_from_user_eva)
__invoke_copy_from(__copy_from_user_eva, to, from, n)
#define __invoke_copy_from_user_inatomic(to, from, n) \
__invoke_copy_from_user_eva_generic(to, from, n, \
__copy_user_inatomic_eva)
__invoke_copy_from(__copy_user_inatomic_eva, to, from, n)
#define __invoke_copy_to_user(to, from, n) \
__invoke_copy_to_user_eva_generic(to, from, n, __copy_to_user_eva)
__invoke_copy_to(__copy_to_user_eva, to, from, n)
#define ___invoke_copy_in_user(to, from, n) \
__invoke_copy_from_user_eva_generic(to, from, n, __copy_in_user_eva)
__invoke_copy_from(__copy_in_user_eva, to, from, n)
/*
* Source or destination address in the kernel. We are not going through
* the TLB
*/
#define __invoke_copy_from_kernel(to, from, n) \
__invoke_copy_from_user_eva_generic(to, from, n, __copy_user)
__invoke_copy_from(__copy_user, to, from, n)
#define __invoke_copy_from_kernel_inatomic(to, from, n) \
__invoke_copy_from_user_eva_generic(to, from, n, __copy_user_inatomic)
__invoke_copy_from(__copy_user_inatomic, to, from, n)
#define __invoke_copy_to_kernel(to, from, n) \
__invoke_copy_to_user_eva_generic(to, from, n, __copy_user)
__invoke_copy_to(__copy_user, to, from, n)
#define ___invoke_copy_in_kernel(to, from, n) \
__invoke_copy_from_user_eva_generic(to, from, n, __copy_user)
__invoke_copy_from(__copy_user, to, from, n)
#endif /* CONFIG_EVA */
......
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