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Diffstat (limited to 'arch/sparc/include/asm/uaccess_64.h')
-rw-r--r--arch/sparc/include/asm/uaccess_64.h222
1 files changed, 118 insertions, 104 deletions
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index c990a5e577f..a35194b7dba 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -41,11 +41,11 @@
#define get_fs() ((mm_segment_t){(current_thread_info()->current_ds)})
#define get_ds() (KERNEL_DS)
-#define segment_eq(a,b) ((a).seg == (b).seg)
+#define segment_eq(a, b) ((a).seg == (b).seg)
#define set_fs(val) \
do { \
- current_thread_info()->current_ds =(val).seg; \
+ current_thread_info()->current_ds = (val).seg; \
__asm__ __volatile__ ("wr %%g0, %0, %%asi" : : "r" ((val).seg)); \
} while(0)
@@ -88,121 +88,135 @@ void __retl_efault(void);
* of a performance impact. Thus we have a few rather ugly macros here,
* and hide all the ugliness from the user.
*/
-#define put_user(x,ptr) ({ \
-unsigned long __pu_addr = (unsigned long)(ptr); \
-__chk_user_ptr(ptr); \
-__put_user_nocheck((__typeof__(*(ptr)))(x),__pu_addr,sizeof(*(ptr))); })
+#define put_user(x, ptr) ({ \
+ unsigned long __pu_addr = (unsigned long)(ptr); \
+ __chk_user_ptr(ptr); \
+ __put_user_nocheck((__typeof__(*(ptr)))(x), __pu_addr, sizeof(*(ptr)));\
+})
-#define get_user(x,ptr) ({ \
-unsigned long __gu_addr = (unsigned long)(ptr); \
-__chk_user_ptr(ptr); \
-__get_user_nocheck((x),__gu_addr,sizeof(*(ptr)),__typeof__(*(ptr))); })
+#define get_user(x, ptr) ({ \
+ unsigned long __gu_addr = (unsigned long)(ptr); \
+ __chk_user_ptr(ptr); \
+ __get_user_nocheck((x), __gu_addr, sizeof(*(ptr)), __typeof__(*(ptr)));\
+})
-#define __put_user(x,ptr) put_user(x,ptr)
-#define __get_user(x,ptr) get_user(x,ptr)
+#define __put_user(x, ptr) put_user(x, ptr)
+#define __get_user(x, ptr) get_user(x, ptr)
struct __large_struct { unsigned long buf[100]; };
#define __m(x) ((struct __large_struct *)(x))
-#define __put_user_nocheck(data,addr,size) ({ \
-register int __pu_ret; \
-switch (size) { \
-case 1: __put_user_asm(data,b,addr,__pu_ret); break; \
-case 2: __put_user_asm(data,h,addr,__pu_ret); break; \
-case 4: __put_user_asm(data,w,addr,__pu_ret); break; \
-case 8: __put_user_asm(data,x,addr,__pu_ret); break; \
-default: __pu_ret = __put_user_bad(); break; \
-} __pu_ret; })
-
-#define __put_user_asm(x,size,addr,ret) \
+#define __put_user_nocheck(data, addr, size) ({ \
+ register int __pu_ret; \
+ switch (size) { \
+ case 1: __put_user_asm(data, b, addr, __pu_ret); break; \
+ case 2: __put_user_asm(data, h, addr, __pu_ret); break; \
+ case 4: __put_user_asm(data, w, addr, __pu_ret); break; \
+ case 8: __put_user_asm(data, x, addr, __pu_ret); break; \
+ default: __pu_ret = __put_user_bad(); break; \
+ } \
+ __pu_ret; \
+})
+
+#define __put_user_asm(x, size, addr, ret) \
__asm__ __volatile__( \
- "/* Put user asm, inline. */\n" \
-"1:\t" "st"#size "a %1, [%2] %%asi\n\t" \
- "clr %0\n" \
-"2:\n\n\t" \
- ".section .fixup,#alloc,#execinstr\n\t" \
- ".align 4\n" \
-"3:\n\t" \
- "sethi %%hi(2b), %0\n\t" \
- "jmpl %0 + %%lo(2b), %%g0\n\t" \
- " mov %3, %0\n\n\t" \
- ".previous\n\t" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".word 1b, 3b\n\t" \
- ".previous\n\n\t" \
- : "=r" (ret) : "r" (x), "r" (__m(addr)), \
- "i" (-EFAULT))
+ "/* Put user asm, inline. */\n" \
+ "1:\t" "st"#size "a %1, [%2] %%asi\n\t" \
+ "clr %0\n" \
+ "2:\n\n\t" \
+ ".section .fixup,#alloc,#execinstr\n\t" \
+ ".align 4\n" \
+ "3:\n\t" \
+ "sethi %%hi(2b), %0\n\t" \
+ "jmpl %0 + %%lo(2b), %%g0\n\t" \
+ " mov %3, %0\n\n\t" \
+ ".previous\n\t" \
+ ".section __ex_table,\"a\"\n\t" \
+ ".align 4\n\t" \
+ ".word 1b, 3b\n\t" \
+ ".previous\n\n\t" \
+ : "=r" (ret) : "r" (x), "r" (__m(addr)), \
+ "i" (-EFAULT))
int __put_user_bad(void);
-#define __get_user_nocheck(data,addr,size,type) ({ \
-register int __gu_ret; \
-register unsigned long __gu_val; \
-switch (size) { \
-case 1: __get_user_asm(__gu_val,ub,addr,__gu_ret); break; \
-case 2: __get_user_asm(__gu_val,uh,addr,__gu_ret); break; \
-case 4: __get_user_asm(__gu_val,uw,addr,__gu_ret); break; \
-case 8: __get_user_asm(__gu_val,x,addr,__gu_ret); break; \
-default: __gu_val = 0; __gu_ret = __get_user_bad(); break; \
-} data = (type) __gu_val; __gu_ret; })
-
-#define __get_user_nocheck_ret(data,addr,size,type,retval) ({ \
-register unsigned long __gu_val __asm__ ("l1"); \
-switch (size) { \
-case 1: __get_user_asm_ret(__gu_val,ub,addr,retval); break; \
-case 2: __get_user_asm_ret(__gu_val,uh,addr,retval); break; \
-case 4: __get_user_asm_ret(__gu_val,uw,addr,retval); break; \
-case 8: __get_user_asm_ret(__gu_val,x,addr,retval); break; \
-default: if (__get_user_bad()) return retval; \
-} data = (type) __gu_val; })
-
-#define __get_user_asm(x,size,addr,ret) \
+#define __get_user_nocheck(data, addr, size, type) ({ \
+ register int __gu_ret; \
+ register unsigned long __gu_val; \
+ switch (size) { \
+ case 1: __get_user_asm(__gu_val, ub, addr, __gu_ret); break; \
+ case 2: __get_user_asm(__gu_val, uh, addr, __gu_ret); break; \
+ case 4: __get_user_asm(__gu_val, uw, addr, __gu_ret); break; \
+ case 8: __get_user_asm(__gu_val, x, addr, __gu_ret); break; \
+ default: \
+ __gu_val = 0; \
+ __gu_ret = __get_user_bad(); \
+ break; \
+ } \
+ data = (__force type) __gu_val; \
+ __gu_ret; \
+})
+
+#define __get_user_nocheck_ret(data, addr, size, type, retval) ({ \
+ register unsigned long __gu_val __asm__ ("l1"); \
+ switch (size) { \
+ case 1: __get_user_asm_ret(__gu_val, ub, addr, retval); break; \
+ case 2: __get_user_asm_ret(__gu_val, uh, addr, retval); break; \
+ case 4: __get_user_asm_ret(__gu_val, uw, addr, retval); break; \
+ case 8: __get_user_asm_ret(__gu_val, x, addr, retval); break; \
+ default: \
+ if (__get_user_bad()) \
+ return retval; \
+ } \
+ data = (__force type) __gu_val; \
+})
+
+#define __get_user_asm(x, size, addr, ret) \
__asm__ __volatile__( \
- "/* Get user asm, inline. */\n" \
-"1:\t" "ld"#size "a [%2] %%asi, %1\n\t" \
- "clr %0\n" \
-"2:\n\n\t" \
- ".section .fixup,#alloc,#execinstr\n\t" \
- ".align 4\n" \
-"3:\n\t" \
- "sethi %%hi(2b), %0\n\t" \
- "clr %1\n\t" \
- "jmpl %0 + %%lo(2b), %%g0\n\t" \
- " mov %3, %0\n\n\t" \
- ".previous\n\t" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".word 1b, 3b\n\n\t" \
- ".previous\n\t" \
- : "=r" (ret), "=r" (x) : "r" (__m(addr)), \
- "i" (-EFAULT))
-
-#define __get_user_asm_ret(x,size,addr,retval) \
+ "/* Get user asm, inline. */\n" \
+ "1:\t" "ld"#size "a [%2] %%asi, %1\n\t" \
+ "clr %0\n" \
+ "2:\n\n\t" \
+ ".section .fixup,#alloc,#execinstr\n\t" \
+ ".align 4\n" \
+ "3:\n\t" \
+ "sethi %%hi(2b), %0\n\t" \
+ "clr %1\n\t" \
+ "jmpl %0 + %%lo(2b), %%g0\n\t" \
+ " mov %3, %0\n\n\t" \
+ ".previous\n\t" \
+ ".section __ex_table,\"a\"\n\t" \
+ ".align 4\n\t" \
+ ".word 1b, 3b\n\n\t" \
+ ".previous\n\t" \
+ : "=r" (ret), "=r" (x) : "r" (__m(addr)), \
+ "i" (-EFAULT))
+
+#define __get_user_asm_ret(x, size, addr, retval) \
if (__builtin_constant_p(retval) && retval == -EFAULT) \
-__asm__ __volatile__( \
- "/* Get user asm ret, inline. */\n" \
-"1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".word 1b,__ret_efault\n\n\t" \
- ".previous\n\t" \
- : "=r" (x) : "r" (__m(addr))); \
+ __asm__ __volatile__( \
+ "/* Get user asm ret, inline. */\n" \
+ "1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
+ ".section __ex_table,\"a\"\n\t" \
+ ".align 4\n\t" \
+ ".word 1b,__ret_efault\n\n\t" \
+ ".previous\n\t" \
+ : "=r" (x) : "r" (__m(addr))); \
else \
-__asm__ __volatile__( \
- "/* Get user asm ret, inline. */\n" \
-"1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
- ".section .fixup,#alloc,#execinstr\n\t" \
- ".align 4\n" \
-"3:\n\t" \
- "ret\n\t" \
- " restore %%g0, %2, %%o0\n\n\t" \
- ".previous\n\t" \
- ".section __ex_table,\"a\"\n\t" \
- ".align 4\n\t" \
- ".word 1b, 3b\n\n\t" \
- ".previous\n\t" \
- : "=r" (x) : "r" (__m(addr)), "i" (retval))
+ __asm__ __volatile__( \
+ "/* Get user asm ret, inline. */\n" \
+ "1:\t" "ld"#size "a [%1] %%asi, %0\n\n\t" \
+ ".section .fixup,#alloc,#execinstr\n\t" \
+ ".align 4\n" \
+ "3:\n\t" \
+ "ret\n\t" \
+ " restore %%g0, %2, %%o0\n\n\t" \
+ ".previous\n\t" \
+ ".section __ex_table,\"a\"\n\t" \
+ ".align 4\n\t" \
+ ".word 1b, 3b\n\n\t" \
+ ".previous\n\t" \
+ : "=r" (x) : "r" (__m(addr)), "i" (retval))
int __get_user_bad(void);
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