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Subject[RFC][PATCH v2 08/22] x86: kill get_user_{try,catch,ex}
Date
From: Al Viro <viro@zeniv.linux.org.uk>

no users left

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
arch/x86/include/asm/uaccess.h | 54 ------------------------------------------
1 file changed, 54 deletions(-)

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 1cfa33b94a1a..4dc5accdd826 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -335,12 +335,9 @@ do { \
"i" (errret), "0" (retval)); \
})

-#define __get_user_asm_ex_u64(x, ptr) (x) = __get_user_bad()
#else
#define __get_user_asm_u64(x, ptr, retval, errret) \
__get_user_asm(x, ptr, retval, "q", "", "=r", errret)
-#define __get_user_asm_ex_u64(x, ptr) \
- __get_user_asm_ex(x, ptr, "q", "", "=r")
#endif

#define __get_user_size(x, ptr, size, retval, errret) \
@@ -378,41 +375,6 @@ do { \
: "=r" (err), ltype(x) \
: "m" (__m(addr)), "i" (errret), "0" (err))

-/*
- * This doesn't do __uaccess_begin/end - the exception handling
- * around it must do that.
- */
-#define __get_user_size_ex(x, ptr, size) \
-do { \
- __chk_user_ptr(ptr); \
- switch (size) { \
- case 1: \
- __get_user_asm_ex(x, ptr, "b", "b", "=q"); \
- break; \
- case 2: \
- __get_user_asm_ex(x, ptr, "w", "w", "=r"); \
- break; \
- case 4: \
- __get_user_asm_ex(x, ptr, "l", "k", "=r"); \
- break; \
- case 8: \
- __get_user_asm_ex_u64(x, ptr); \
- break; \
- default: \
- (x) = __get_user_bad(); \
- } \
-} while (0)
-
-#define __get_user_asm_ex(x, addr, itype, rtype, ltype) \
- asm volatile("1: mov"itype" %1,%"rtype"0\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3:xor"itype" %"rtype"0,%"rtype"0\n" \
- " jmp 2b\n" \
- ".previous\n" \
- _ASM_EXTABLE_EX(1b, 3b) \
- : ltype(x) : "m" (__m(addr)))
-
#define __put_user_nocheck(x, ptr, size) \
({ \
__label__ __pu_label; \
@@ -540,22 +502,6 @@ struct __large_struct { unsigned long buf[100]; };
#define __put_user(x, ptr) \
__put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))

-/*
- * {get|put}_user_try and catch
- *
- * get_user_try {
- * get_user_ex(...);
- * } get_user_catch(err)
- */
-#define get_user_try uaccess_try_nospec
-#define get_user_catch(err) uaccess_catch(err)
-
-#define get_user_ex(x, ptr) do { \
- unsigned long __gue_val; \
- __get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr)))); \
- (x) = (__force __typeof__(*(ptr)))__gue_val; \
-} while (0)
-
#define put_user_try uaccess_try
#define put_user_catch(err) uaccess_catch(err)

--
2.11.0
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