34 static inline enum direction decode_direction(unsigned int insn)  in decode_direction()  argument
36 	unsigned long tmp = (insn >> 21) & 1;  in decode_direction()
41 		if(((insn>>19)&0x3f) == 15)  in decode_direction()
49 static inline int decode_access_size(unsigned int insn)  in decode_access_size()  argument
51 	insn = (insn >> 19) & 3;  in decode_access_size()
53 	if(!insn)  in decode_access_size()
55 	else if(insn == 3)  in decode_access_size()
57 	else if(insn == 2)  in decode_access_size()
60 		printk("Impossible unaligned trap. insn=%08x\n", insn);  in decode_access_size()
67 static inline int decode_signedness(unsigned int insn)  in decode_signedness()  argument
69 	return (insn & 0x400000);  in decode_signedness()
137 					       unsigned int insn)  in compute_effective_address()  argument
139 	unsigned int rs1 = (insn >> 14) & 0x1f;  in compute_effective_address()
140 	unsigned int rs2 = insn & 0x1f;  in compute_effective_address()
141 	unsigned int rd = (insn >> 25) & 0x1f;  in compute_effective_address()
143 	if(insn & 0x2000) {  in compute_effective_address()
145 		return (fetch_reg(rs1, regs) + sign_extend_imm13(insn));  in compute_effective_address()
153 					     unsigned int insn)  in safe_compute_effective_address()  argument
155 	unsigned int rs1 = (insn >> 14) & 0x1f;  in safe_compute_effective_address()
156 	unsigned int rs2 = insn & 0x1f;  in safe_compute_effective_address()
157 	unsigned int rd = (insn >> 25) & 0x1f;  in safe_compute_effective_address()
159 	if(insn & 0x2000) {  in safe_compute_effective_address()
161 		return (safe_fetch_reg(rs1, regs) + sign_extend_imm13(insn));  in safe_compute_effective_address()
205 static inline int floating_point_load_or_store_p(unsigned int insn)  in floating_point_load_or_store_p()  argument
207 	return (insn >> 24) & 1;  in floating_point_load_or_store_p()
210 static inline int ok_for_kernel(unsigned int insn)  in ok_for_kernel()  argument
212 	return !floating_point_load_or_store_p(insn);  in ok_for_kernel()
215 static void kernel_mna_trap_fault(struct pt_regs *regs, unsigned int insn)  in kernel_mna_trap_fault()  argument
221 		unsigned long address = compute_effective_address(regs, insn);  in kernel_mna_trap_fault()
240 asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)  in kernel_unaligned_trap()  argument
242 	enum direction dir = decode_direction(insn);  in kernel_unaligned_trap()
243 	int size = decode_access_size(insn);  in kernel_unaligned_trap()
245 	if(!ok_for_kernel(insn) || dir == both) {  in kernel_unaligned_trap()
250 		unsigned long addr = compute_effective_address(regs, insn);  in kernel_unaligned_trap()
256 			err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),  in kernel_unaligned_trap()
259 					  decode_signedness(insn));  in kernel_unaligned_trap()
263 			err = do_int_store(((insn>>25)&0x1f), size,  in kernel_unaligned_trap()
271 			kernel_mna_trap_fault(regs, insn);  in kernel_unaligned_trap()
277 asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn)  in user_unaligned_trap()  argument
280 		       (void __user *)safe_compute_effective_address(regs, insn),  in user_unaligned_trap()