patch-2.4.10 linux/include/asm-mips64/uaccess.h
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- Lines: 464
- Date:
Sun Sep 9 10:43:02 2001
- Orig file:
v2.4.9/linux/include/asm-mips64/uaccess.h
- Orig date:
Tue Aug 29 14:09:16 2000
diff -u --recursive --new-file v2.4.9/linux/include/asm-mips64/uaccess.h linux/include/asm-mips64/uaccess.h
@@ -45,12 +45,16 @@
* - AND "addr+size" doesn't have any high-bits set
* - OR we are in kernel mode.
*/
-#define __access_ok(addr,size,mask) \
- (((__signed__ long)((mask)&(addr | size | (addr+size)))) >= 0)
+#define __ua_size(size) \
+ (__builtin_constant_p(size) && (signed long) (size) > 0 ? 0 : (size))
+
+#define __access_ok(addr,size,mask) \
+ (((signed long)((mask)&(addr | (addr + size) | __ua_size(size)))) >= 0)
+
#define __access_mask ((long)(get_fs().seg))
#define access_ok(type,addr,size) \
-__access_ok(((unsigned long)(addr)),(size),__access_mask)
+ __access_ok(((unsigned long)(addr)),(size),__access_mask)
extern inline int verify_area(int type, const void * addr, unsigned long size)
{
@@ -87,102 +91,114 @@
struct __large_struct { unsigned long buf[100]; };
#define __m(x) (*(struct __large_struct *)(x))
-#define __get_user_nocheck(x,ptr,size) ({ \
-long __gu_err; \
-__typeof(*(ptr)) __gu_val; \
-long __gu_addr; \
-__asm__("":"=r" (__gu_val)); \
-__gu_addr = (long) (ptr); \
-__asm__("":"=r" (__gu_err)); \
-switch (size) { \
-case 1: __get_user_asm("lb"); break; \
-case 2: __get_user_asm("lh"); break; \
-case 4: __get_user_asm("lw"); break; \
-case 8: __get_user_asm("ld"); break; \
-default: __get_user_unknown(); break; \
-} x = (__typeof__(*(ptr))) __gu_val; __gu_err; })
-
-#define __get_user_check(x,ptr,size) ({ \
-long __gu_err; \
-__typeof__(*(ptr)) __gu_val; \
-long __gu_addr; \
-__asm__("":"=r" (__gu_val)); \
-__gu_addr = (long) (ptr); \
-__asm__("":"=r" (__gu_err)); \
-if (__access_ok(__gu_addr,size,__access_mask)) { \
-switch (size) { \
-case 1: __get_user_asm("lb"); break; \
-case 2: __get_user_asm("lh"); break; \
-case 4: __get_user_asm("lw"); break; \
-case 8: __get_user_asm("ld"); break; \
-default: __get_user_unknown(); break; \
-} } x = (__typeof__(*(ptr))) __gu_val; __gu_err; })
-
-#define __get_user_asm(insn) \
-({ \
-__asm__ __volatile__( \
- "1:\t" insn "\t%1,%2\n\t" \
- "move\t%0,$0\n" \
- "2:\n\t" \
- ".section\t.fixup,\"ax\"\n" \
- "3:\tli\t%0,%3\n\t" \
- "move\t%1,$0\n\t" \
- "j\t2b\n\t" \
- ".previous\n\t" \
- ".section\t__ex_table,\"a\"\n\t" \
- ".dword\t1b,3b\n\t" \
- ".previous" \
- :"=r" (__gu_err), "=r" (__gu_val) \
- :"o" (__m(__gu_addr)), "i" (-EFAULT)); })
+#define __get_user_nocheck(x,ptr,size) \
+({ \
+ long __gu_err; \
+ __typeof(*(ptr)) __gu_val; \
+ long __gu_addr; \
+ __asm__("":"=r" (__gu_val)); \
+ __gu_addr = (long) (ptr); \
+ __asm__("":"=r" (__gu_err)); \
+ switch (size) { \
+ case 1: __get_user_asm("lb"); break; \
+ case 2: __get_user_asm("lh"); break; \
+ case 4: __get_user_asm("lw"); break; \
+ case 8: __get_user_asm("ld"); break; \
+ default: __get_user_unknown(); break; \
+ } x = (__typeof__(*(ptr))) __gu_val; __gu_err; \
+})
+
+#define __get_user_check(x,ptr,size) \
+({ \
+ long __gu_err; \
+ __typeof__(*(ptr)) __gu_val; \
+ long __gu_addr; \
+ __asm__("":"=r" (__gu_val)); \
+ __gu_addr = (long) (ptr); \
+ __asm__("":"=r" (__gu_err)); \
+ if (__access_ok(__gu_addr,size,__access_mask)) { \
+ switch (size) { \
+ case 1: __get_user_asm("lb"); break; \
+ case 2: __get_user_asm("lh"); break; \
+ case 4: __get_user_asm("lw"); break; \
+ case 8: __get_user_asm("ld"); break; \
+ default: __get_user_unknown(); break; \
+ } \
+ } x = (__typeof__(*(ptr))) __gu_val; __gu_err; \
+})
+
+#define __get_user_asm(insn) \
+({ \
+ __asm__ __volatile__( \
+ "1:\t" insn "\t%1,%2\n\t" \
+ "move\t%0,$0\n" \
+ "2:\n\t" \
+ ".section\t.fixup,\"ax\"\n" \
+ "3:\tli\t%0,%3\n\t" \
+ "move\t%1,$0\n\t" \
+ "j\t2b\n\t" \
+ ".previous\n\t" \
+ ".section\t__ex_table,\"a\"\n\t" \
+ ".dword\t1b,3b\n\t" \
+ ".previous" \
+ :"=r" (__gu_err), "=r" (__gu_val) \
+ :"o" (__m(__gu_addr)), "i" (-EFAULT)); \
+})
extern void __get_user_unknown(void);
-#define __put_user_nocheck(x,ptr,size) ({ \
-long __pu_err; \
-__typeof__(*(ptr)) __pu_val; \
-long __pu_addr; \
-__pu_val = (x); \
-__pu_addr = (long) (ptr); \
-__asm__("":"=r" (__pu_err)); \
-switch (size) { \
-case 1: __put_user_asm("sb"); break; \
-case 2: __put_user_asm("sh"); break; \
-case 4: __put_user_asm("sw"); break; \
-case 8: __put_user_asm("sd"); break; \
-default: __put_user_unknown(); break; \
-} __pu_err; })
-
-#define __put_user_check(x,ptr,size) ({ \
-long __pu_err; \
-__typeof__(*(ptr)) __pu_val; \
-long __pu_addr; \
-__pu_val = (x); \
-__pu_addr = (long) (ptr); \
-__asm__("":"=r" (__pu_err)); \
-if (__access_ok(__pu_addr,size,__access_mask)) { \
-switch (size) { \
-case 1: __put_user_asm("sb"); break; \
-case 2: __put_user_asm("sh"); break; \
-case 4: __put_user_asm("sw"); break; \
-case 8: __put_user_asm("sd"); break; \
-default: __put_user_unknown(); break; \
-} } __pu_err; })
-
-#define __put_user_asm(insn) \
-({ \
-__asm__ __volatile__( \
- "1:\t" insn "\t%1,%2\n\t" \
- "move\t%0,$0\n" \
- "2:\n\t" \
- ".section\t.fixup,\"ax\"\n" \
- "3:\tli\t%0,%3\n\t" \
- "j\t2b\n\t" \
- ".previous\n\t" \
- ".section\t__ex_table,\"a\"\n\t" \
- ".dword\t1b,3b\n\t" \
- ".previous" \
- :"=r" (__pu_err) \
- :"r" (__pu_val), "o" (__m(__pu_addr)), "i" (-EFAULT)); })
+#define __put_user_nocheck(x,ptr,size) \
+({ \
+ long __pu_err; \
+ __typeof__(*(ptr)) __pu_val; \
+ long __pu_addr; \
+ __pu_val = (x); \
+ __pu_addr = (long) (ptr); \
+ __asm__("":"=r" (__pu_err)); \
+ switch (size) { \
+ case 1: __put_user_asm("sb"); break; \
+ case 2: __put_user_asm("sh"); break; \
+ case 4: __put_user_asm("sw"); break; \
+ case 8: __put_user_asm("sd"); break; \
+ default: __put_user_unknown(); break; \
+ } __pu_err; \
+})
+
+#define __put_user_check(x,ptr,size) \
+({ \
+ long __pu_err; \
+ __typeof__(*(ptr)) __pu_val; \
+ long __pu_addr; \
+ __pu_val = (x); \
+ __pu_addr = (long) (ptr); \
+ __asm__("":"=r" (__pu_err)); \
+ if (__access_ok(__pu_addr,size,__access_mask)) { \
+ switch (size) { \
+ case 1: __put_user_asm("sb"); break; \
+ case 2: __put_user_asm("sh"); break; \
+ case 4: __put_user_asm("sw"); break; \
+ case 8: __put_user_asm("sd"); break; \
+ default: __put_user_unknown(); break; \
+ } \
+ } __pu_err; \
+})
+
+#define __put_user_asm(insn) \
+({ \
+ __asm__ __volatile__( \
+ "1:\t" insn "\t%z1, %2\t\t\t# __put_user_asm\n\t" \
+ "move\t%0,$0\n" \
+ "2:\n\t" \
+ ".section\t.fixup,\"ax\"\n" \
+ "3:\tli\t%0,%3\n\t" \
+ "j\t2b\n\t" \
+ ".previous\n\t" \
+ ".section\t__ex_table,\"a\"\n\t" \
+ ".dword\t1b,3b\n\t" \
+ ".previous" \
+ :"=r" (__pu_err) \
+ :"Jr" (__pu_val), "o" (__m(__pu_addr)), "i" (-EFAULT)); \
+})
extern void __put_user_unknown(void);
@@ -191,112 +207,116 @@
* jump instructions
*/
#ifdef MODULE
-#define __MODULE_JAL(destination) \
- ".set\tnoat\n\t" \
- "la\t$1, " #destination "\n\t" \
- "jalr\t$1\n\t" \
+#define __MODULE_JAL(destination) \
+ ".set\tnoat\n\t" \
+ "dla\t$1, " #destination "\n\t" \
+ "jalr\t$1\n\t" \
".set\tat\n\t"
#else
-#define __MODULE_JAL(destination) \
+#define __MODULE_JAL(destination) \
"jal\t" #destination "\n\t"
#endif
extern size_t __copy_user(void *__to, const void *__from, size_t __n);
-#define __copy_to_user(to,from,n) ({ \
- void *__cu_to; \
- const void *__cu_from; \
- long __cu_len; \
- \
- __cu_to = (to); \
- __cu_from = (from); \
- __cu_len = (n); \
- __asm__ __volatile__( \
- "move\t$4, %1\n\t" \
- "move\t$5, %2\n\t" \
- "move\t$6, %3\n\t" \
- __MODULE_JAL(__copy_user) \
- "move\t%0, $6" \
- : "=r" (__cu_len) \
+#define __copy_to_user(to,from,n) \
+({ \
+ void *__cu_to; \
+ const void *__cu_from; \
+ long __cu_len; \
+ \
+ __cu_to = (to); \
+ __cu_from = (from); \
+ __cu_len = (n); \
+ __asm__ __volatile__( \
+ "move\t$4, %1\n\t" \
+ "move\t$5, %2\n\t" \
+ "move\t$6, %3\n\t" \
+ __MODULE_JAL(__copy_user) \
+ "move\t%0, $6" \
+ : "=r" (__cu_len) \
+ : "r" (__cu_to), "r" (__cu_from), "r" (__cu_len) \
+ : "$4", "$5", "$6", "$8", "$9", "$10", "$11", "$12", \
+ "$15", "$24", "$31","memory"); \
+ __cu_len; \
+})
+
+#define __copy_from_user(to,from,n) \
+({ \
+ void *__cu_to; \
+ const void *__cu_from; \
+ long __cu_len; \
+ \
+ __cu_to = (to); \
+ __cu_from = (from); \
+ __cu_len = (n); \
+ __asm__ __volatile__( \
+ "move\t$4, %1\n\t" \
+ "move\t$5, %2\n\t" \
+ "move\t$6, %3\n\t" \
+ ".set\tnoreorder\n\t" \
+ __MODULE_JAL(__copy_user) \
+ ".set\tnoat\n\t" \
+ "daddu\t$1, %2, %3\n\t" \
+ ".set\tat\n\t" \
+ ".set\treorder\n\t" \
+ "move\t%0, $6" \
+ : "=r" (__cu_len) \
+ : "r" (__cu_to), "r" (__cu_from), "r" (__cu_len) \
+ : "$4", "$5", "$6", "$8", "$9", "$10", "$11", "$12", \
+ "$15", "$24", "$31","memory"); \
+ __cu_len; \
+})
+
+#define copy_to_user(to,from,n) \
+({ \
+ void *__cu_to; \
+ const void *__cu_from; \
+ long __cu_len; \
+ \
+ __cu_to = (to); \
+ __cu_from = (from); \
+ __cu_len = (n); \
+ if (access_ok(VERIFY_WRITE, __cu_to, __cu_len)) \
+ __asm__ __volatile__( \
+ "move\t$4, %1\n\t" \
+ "move\t$5, %2\n\t" \
+ "move\t$6, %3\n\t" \
+ __MODULE_JAL(__copy_user) \
+ "move\t%0, $6" \
+ : "=r" (__cu_len) \
: "r" (__cu_to), "r" (__cu_from), "r" (__cu_len) \
- : "$4", "$5", "$6", "$8", "$9", "$10", "$11", "$12", "$15", \
- "$24", "$31","memory"); \
- __cu_len; \
-})
-
-#define __copy_from_user(to,from,n) ({ \
- void *__cu_to; \
- const void *__cu_from; \
- long __cu_len; \
- \
- __cu_to = (to); \
- __cu_from = (from); \
- __cu_len = (n); \
- __asm__ __volatile__( \
- "move\t$4, %1\n\t" \
- "move\t$5, %2\n\t" \
- "move\t$6, %3\n\t" \
- ".set\tnoreorder\n\t" \
- __MODULE_JAL(__copy_user) \
- ".set\tnoat\n\t" \
- "daddu\t$1, %2, %3\n\t" \
- ".set\tat\n\t" \
- ".set\treorder\n\t" \
- "move\t%0, $6" \
- : "=r" (__cu_len) \
+ : "$4", "$5", "$6", "$8", "$9", "$10", "$11", \
+ "$12", "$15", "$24", "$31","memory"); \
+ __cu_len; \
+})
+
+#define copy_from_user(to,from,n) \
+({ \
+ void *__cu_to; \
+ const void *__cu_from; \
+ long __cu_len; \
+ \
+ __cu_to = (to); \
+ __cu_from = (from); \
+ __cu_len = (n); \
+ if (access_ok(VERIFY_READ, __cu_from, __cu_len)) \
+ __asm__ __volatile__( \
+ "move\t$4, %1\n\t" \
+ "move\t$5, %2\n\t" \
+ "move\t$6, %3\n\t" \
+ ".set\tnoreorder\n\t" \
+ __MODULE_JAL(__copy_user) \
+ ".set\tnoat\n\t" \
+ "daddu\t$1, %2, %3\n\t" \
+ ".set\tat\n\t" \
+ ".set\treorder\n\t" \
+ "move\t%0, $6" \
+ : "=r" (__cu_len) \
: "r" (__cu_to), "r" (__cu_from), "r" (__cu_len) \
- : "$4", "$5", "$6", "$8", "$9", "$10", "$11", "$12", "$15", \
- "$24", "$31","memory"); \
- __cu_len; \
-})
-
-#define copy_to_user(to,from,n) ({ \
- void *__cu_to; \
- const void *__cu_from; \
- long __cu_len; \
- \
- __cu_to = (to); \
- __cu_from = (from); \
- __cu_len = (n); \
- if (access_ok(VERIFY_WRITE, __cu_to, __cu_len)) \
- __asm__ __volatile__( \
- "move\t$4, %1\n\t" \
- "move\t$5, %2\n\t" \
- "move\t$6, %3\n\t" \
- __MODULE_JAL(__copy_user) \
- "move\t%0, $6" \
- : "=r" (__cu_len) \
- : "r" (__cu_to), "r" (__cu_from), "r" (__cu_len) \
- : "$4", "$5", "$6", "$8", "$9", "$10", "$11", "$12", \
- "$15", "$24", "$31","memory"); \
- __cu_len; \
-})
-
-#define copy_from_user(to,from,n) ({ \
- void *__cu_to; \
- const void *__cu_from; \
- long __cu_len; \
- \
- __cu_to = (to); \
- __cu_from = (from); \
- __cu_len = (n); \
- if (access_ok(VERIFY_READ, __cu_from, __cu_len)) \
- __asm__ __volatile__( \
- "move\t$4, %1\n\t" \
- "move\t$5, %2\n\t" \
- "move\t$6, %3\n\t" \
- ".set\tnoreorder\n\t" \
- __MODULE_JAL(__copy_user) \
- ".set\tnoat\n\t" \
- "daddu\t$1, %2, %3\n\t" \
- ".set\tat\n\t" \
- ".set\treorder\n\t" \
- "move\t%0, $6" \
- : "=r" (__cu_len) \
- : "r" (__cu_to), "r" (__cu_from), "r" (__cu_len) \
- : "$4", "$5", "$6", "$8", "$9", "$10", "$11", "$12", \
- "$15", "$24", "$31","memory"); \
- __cu_len; \
+ : "$4", "$5", "$6", "$8", "$9", "$10", "$11", \
+ "$12", "$15", "$24", "$31","memory"); \
+ __cu_len; \
})
extern inline __kernel_size_t
@@ -317,12 +337,15 @@
return res;
}
-#define clear_user(addr,n) ({ \
-void * __cl_addr = (addr); \
-unsigned long __cl_size = (n); \
-if (__cl_size && __access_ok(VERIFY_WRITE, ((unsigned long)(__cl_addr)), __cl_size)) \
-__cl_size = __clear_user(__cl_addr, __cl_size); \
-__cl_size; })
+#define clear_user(addr,n) \
+({ \
+ void * __cl_addr = (addr); \
+ unsigned long __cl_size = (n); \
+ if (__cl_size && __access_ok(VERIFY_WRITE, \
+ ((unsigned long)(__cl_addr)), __cl_size)) \
+ __cl_size = __clear_user(__cl_addr, __cl_size); \
+ __cl_size; \
+})
/*
* Returns: -EFAULT if exception before terminator, N if the entire
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)