Commit d84869a1 authored by Markos Chandras's avatar Markos Chandras Committed by Ralf Baechle
Browse files

MIPS: asm: uaccess: Add instruction argument to __{put,get}_user_asm 



In preparation for EVA support, an instruction argument is needed
for the __get_user_asm{,_ll32} functions to allow instruction overrides in
EVA mode. Even though EVA only works for MIPS 32-bit, both codepaths are
changed (32-bit and 64-bit) for consistency reasons.

Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
parent fd9720e9

arch/mips/include/asm/uaccess.h

+13 −13
Original line number Diff line number Diff line
@@ -223,10 +223,10 @@ struct __large_struct { unsigned long buf[100]; }; 
 * for 32 bit mode and old iron.

 */

#ifdef CONFIG_32BIT

#define __GET_USER_DW(val, ptr) __get_user_asm_ll32(val, ptr)

#define __GET_USER_DW(val, insn, ptr) __get_user_asm_ll32(val, insn, ptr)

#endif

#ifdef CONFIG_64BIT

#define __GET_USER_DW(val, ptr) __get_user_asm(val, "ld", ptr)

#define __GET_USER_DW(val, insn, ptr) __get_user_asm(val, "ld", ptr)

#endif



extern void __get_user_unknown(void);
@@ -237,7 +237,7 @@ do { \ 
	case 1: __get_user_asm(val, "lb", ptr); break;			\

	case 2: __get_user_asm(val, "lh", ptr); break;			\

	case 4: __get_user_asm(val, "lw", ptr); break;			\

	case 8: __GET_USER_DW(val, ptr); break;				\

	case 8: __GET_USER_DW(val, "lw", ptr); break;			\

	default: __get_user_unknown(); break;				\

	}								\

} while (0)
@@ -287,7 +287,7 @@ do { \ 
/*

 * Get a long long 64 using 32 bit registers.

 */

#define __get_user_asm_ll32(val, addr)					\

#define __get_user_asm_ll32(val, insn, addr)				\

{									\

	union {								\

		unsigned long long	l;				\
@@ -295,8 +295,8 @@ do { \ 
	} __gu_tmp;							\

									\

	__asm__ __volatile__(						\

	"1:	lw	%1, (%3)				\n"	\

	"2:	lw	%D1, 4(%3)				\n"	\

	"1:	" insn "	%1, (%3)			\n"	\

	"2:	" insn "	%D1, 4(%3)			\n"	\

	"3:							\n"	\

	"	.insn						\n"	\

	"	.section	.fixup,\"ax\"			\n"	\
@@ -320,10 +320,10 @@ do { \ 
 * for 32 bit mode and old iron.

 */

#ifdef CONFIG_32BIT

#define __PUT_USER_DW(ptr) __put_user_asm_ll32(ptr)

#define __PUT_USER_DW(insn, ptr) __put_user_asm_ll32(insn, ptr)

#endif

#ifdef CONFIG_64BIT

#define __PUT_USER_DW(ptr) __put_user_asm("sd", ptr)

#define __PUT_USER_DW(insn, ptr) __put_user_asm("sd", ptr)

#endif



#define __put_user_nocheck(x, ptr, size)				\
@@ -337,7 +337,7 @@ do { \ 
	case 1: __put_user_asm("sb", ptr); break;			\

	case 2: __put_user_asm("sh", ptr); break;			\

	case 4: __put_user_asm("sw", ptr); break;			\

	case 8: __PUT_USER_DW(ptr); break;				\

	case 8: __PUT_USER_DW("sw", ptr); break;			\

	default: __put_user_unknown(); break;				\

	}								\

	__pu_err;							\
@@ -355,7 +355,7 @@ do { \ 
		case 1: __put_user_asm("sb", __pu_addr); break;		\

		case 2: __put_user_asm("sh", __pu_addr); break;		\

		case 4: __put_user_asm("sw", __pu_addr); break;		\

		case 8: __PUT_USER_DW(__pu_addr); break;		\

		case 8: __PUT_USER_DW("sw", __pu_addr); break;		\

		default: __put_user_unknown(); break;			\

		}							\

	}								\
@@ -380,11 +380,11 @@ do { \ 
	  "i" (-EFAULT));						\

}



#define __put_user_asm_ll32(ptr)					\

#define __put_user_asm_ll32(insn, ptr)					\

{									\

	__asm__ __volatile__(						\

	"1:	sw	%2, (%3)	# __put_user_asm_ll32	\n"	\

	"2:	sw	%D2, 4(%3)				\n"	\

	"1:	" insn "	%2, (%3)# __put_user_asm_ll32	\n"	\

	"2:	" insn "	%D2, 4(%3)			\n"	\

	"3:							\n"	\

	"	.insn						\n"	\

	"	.section	.fixup,\"ax\"			\n"	\

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