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Commit 9d8e5736 authored by Markos Chandras's avatar Markos Chandras Committed by Ralf Baechle
Browse files

MIPS: kernel: unaligned: Add EVA instruction wrappers 



Use the load/store instruction wrappers from asm/asm.h to
perform such operations when operating in EVA mode.

Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
parent e3a9b07a

arch/mips/kernel/unaligned.c

+25 −24
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
 *

 * Copyright (C) 1996, 1998, 1999, 2002 by Ralf Baechle

 * Copyright (C) 1999 Silicon Graphics, Inc.

 * Copyright (C) 2014 Imagination Technologies Ltd.

 *

 * This file contains exception handler for address error exception with the

 * special capability to execute faulting instructions in software.  The
@@ -110,8 +111,8 @@ extern void show_registers(struct pt_regs *regs); 
#ifdef __BIG_ENDIAN

#define     LoadHW(addr, value, res)  \

		__asm__ __volatile__ (".set\tnoat\n"        \

			"1:\tlb\t%0, 0(%2)\n"               \

			"2:\tlbu\t$1, 1(%2)\n\t"            \

			"1:\t"user_lb("%0", "0(%2)")"\n"    \

			"2:\t"user_lbu("$1", "1(%2)")"\n\t" \

			"sll\t%0, 0x8\n\t"                  \

			"or\t%0, $1\n\t"                    \

			"li\t%1, 0\n"                       \
@@ -130,8 +131,8 @@ extern void show_registers(struct pt_regs *regs); 


#define     LoadW(addr, value, res)   \

		__asm__ __volatile__ (                      \

			"1:\tlwl\t%0, (%2)\n"               \

			"2:\tlwr\t%0, 3(%2)\n\t"            \

			"1:\t"user_lwl("%0", "(%2)")"\n"    \

			"2:\t"user_lwr("%0", "3(%2)")"\n\t" \

			"li\t%1, 0\n"                       \

			"3:\n\t"                            \

			".insn\n\t"                         \
@@ -149,8 +150,8 @@ extern void show_registers(struct pt_regs *regs); 
#define     LoadHWU(addr, value, res) \

		__asm__ __volatile__ (                      \

			".set\tnoat\n"                      \

			"1:\tlbu\t%0, 0(%2)\n"              \

			"2:\tlbu\t$1, 1(%2)\n\t"            \

			"1:\t"user_lbu("%0", "0(%2)")"\n"   \

			"2:\t"user_lbu("$1", "1(%2)")"\n\t" \

			"sll\t%0, 0x8\n\t"                  \

			"or\t%0, $1\n\t"                    \

			"li\t%1, 0\n"                       \
@@ -170,8 +171,8 @@ extern void show_registers(struct pt_regs *regs); 


#define     LoadWU(addr, value, res)  \

		__asm__ __volatile__ (                      \

			"1:\tlwl\t%0, (%2)\n"               \

			"2:\tlwr\t%0, 3(%2)\n\t"            \

			"1:\t"user_lwl("%0", "(%2)")"\n"    \

			"2:\t"user_lwr("%0", "3(%2)")"\n\t" \

			"dsll\t%0, %0, 32\n\t"              \

			"dsrl\t%0, %0, 32\n\t"              \

			"li\t%1, 0\n"                       \
@@ -209,9 +210,9 @@ extern void show_registers(struct pt_regs *regs); 
#define     StoreHW(addr, value, res) \

		__asm__ __volatile__ (                      \

			".set\tnoat\n"                      \

			"1:\tsb\t%1, 1(%2)\n\t"             \

			"1:\t"user_sb("%1", "1(%2)")"\n"    \

			"srl\t$1, %1, 0x8\n"                \

			"2:\tsb\t$1, 0(%2)\n\t"             \

			"2:\t"user_sb("$1", "0(%2)")"\n"    \

			".set\tat\n\t"                      \

			"li\t%0, 0\n"                       \

			"3:\n\t"                            \
@@ -229,8 +230,8 @@ extern void show_registers(struct pt_regs *regs); 


#define     StoreW(addr, value, res)  \

		__asm__ __volatile__ (                      \

			"1:\tswl\t%1,(%2)\n"                \

			"2:\tswr\t%1, 3(%2)\n\t"            \

			"1:\t"user_swl("%1", "(%2)")"\n"    \

			"2:\t"user_swr("%1", "3(%2)")"\n\t" \

			"li\t%0, 0\n"                       \

			"3:\n\t"                            \

			".insn\n\t"                         \
@@ -267,8 +268,8 @@ extern void show_registers(struct pt_regs *regs); 
#ifdef __LITTLE_ENDIAN

#define     LoadHW(addr, value, res)  \

		__asm__ __volatile__ (".set\tnoat\n"        \

			"1:\tlb\t%0, 1(%2)\n"               \

			"2:\tlbu\t$1, 0(%2)\n\t"            \

			"1:\t"user_lb("%0", "1(%2)")"\n"    \

			"2:\t"user_lbu("$1", "0(%2)")"\n\t" \

			"sll\t%0, 0x8\n\t"                  \

			"or\t%0, $1\n\t"                    \

			"li\t%1, 0\n"                       \
@@ -287,8 +288,8 @@ extern void show_registers(struct pt_regs *regs); 


#define     LoadW(addr, value, res)   \

		__asm__ __volatile__ (                      \

			"1:\tlwl\t%0, 3(%2)\n"              \

			"2:\tlwr\t%0, (%2)\n\t"             \

			"1:\t"user_lwl("%0", "3(%2)")"\n"   \

			"2:\t"user_lwr("%0", "(%2)")"\n\t"  \

			"li\t%1, 0\n"                       \

			"3:\n\t"                            \

			".insn\n\t"                         \
@@ -306,8 +307,8 @@ extern void show_registers(struct pt_regs *regs); 
#define     LoadHWU(addr, value, res) \

		__asm__ __volatile__ (                      \

			".set\tnoat\n"                      \

			"1:\tlbu\t%0, 1(%2)\n"              \

			"2:\tlbu\t$1, 0(%2)\n\t"            \

			"1:\t"user_lbu("%0", "1(%2)")"\n"   \

			"2:\t"user_lbu("$1", "0(%2)")"\n\t" \

			"sll\t%0, 0x8\n\t"                  \

			"or\t%0, $1\n\t"                    \

			"li\t%1, 0\n"                       \
@@ -327,8 +328,8 @@ extern void show_registers(struct pt_regs *regs); 


#define     LoadWU(addr, value, res)  \

		__asm__ __volatile__ (                      \

			"1:\tlwl\t%0, 3(%2)\n"              \

			"2:\tlwr\t%0, (%2)\n\t"             \

			"1:\t"user_lwl("%0", "3(%2)")"\n"   \

			"2:\t"user_lwr("%0", "(%2)")"\n\t"  \

			"dsll\t%0, %0, 32\n\t"              \

			"dsrl\t%0, %0, 32\n\t"              \

			"li\t%1, 0\n"                       \
@@ -366,9 +367,9 @@ extern void show_registers(struct pt_regs *regs); 
#define     StoreHW(addr, value, res) \

		__asm__ __volatile__ (                      \

			".set\tnoat\n"                      \

			"1:\tsb\t%1, 0(%2)\n\t"             \

			"1:\t"user_sb("%1", "0(%2)")"\n"    \

			"srl\t$1,%1, 0x8\n"                 \

			"2:\tsb\t$1, 1(%2)\n\t"             \

			"2:\t"user_sb("$1", "1(%2)")"\n"    \

			".set\tat\n\t"                      \

			"li\t%0, 0\n"                       \

			"3:\n\t"                            \
@@ -386,8 +387,8 @@ extern void show_registers(struct pt_regs *regs); 


#define     StoreW(addr, value, res)  \

		__asm__ __volatile__ (                      \

			"1:\tswl\t%1, 3(%2)\n"              \

			"2:\tswr\t%1, (%2)\n\t"             \

			"1:\t"user_swl("%1", "3(%2)")"\n"   \

			"2:\t"user_swr("%1", "(%2)")"\n\t"  \

			"li\t%0, 0\n"                       \

			"3:\n\t"                            \

			".insn\n\t"                         \