92 static inline unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)  in fetch_reg()  argument
97 		return (!reg ? 0 : regs->u_regs[reg]);  in fetch_reg()
100 	win = (struct reg_window32 *) regs->u_regs[UREG_FP];  in fetch_reg()
104 static inline unsigned long safe_fetch_reg(unsigned int reg, struct pt_regs *regs)  in safe_fetch_reg()  argument
110 		return (!reg ? 0 : regs->u_regs[reg]);  in safe_fetch_reg()
113 	win = (struct reg_window32 __user *) regs->u_regs[UREG_FP];  in safe_fetch_reg()
124 static inline unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs)  in fetch_reg_addr()  argument
129 		return &regs->u_regs[reg];  in fetch_reg_addr()
130 	win = (struct reg_window32 *) regs->u_regs[UREG_FP];  in fetch_reg_addr()
134 static unsigned long compute_effective_address(struct pt_regs *regs,  in compute_effective_address()  argument
143 		return (fetch_reg(rs1, regs) + sign_extend_imm13(insn));  in compute_effective_address()
146 		return (fetch_reg(rs1, regs) + fetch_reg(rs2, regs));  in compute_effective_address()
150 unsigned long safe_compute_effective_address(struct pt_regs *regs,  in safe_compute_effective_address()  argument
159 		return (safe_fetch_reg(rs1, regs) + sign_extend_imm13(insn));  in safe_compute_effective_address()
162 		return (safe_fetch_reg(rs1, regs) + safe_fetch_reg(rs2, regs));  in safe_compute_effective_address()
179 			struct pt_regs *regs)  in do_int_store()  argument
185 		src_val = fetch_reg_addr(reg_num, regs);  in do_int_store()
189 			zero[1] = fetch_reg(1, regs);  in do_int_store()
197 static inline void advance(struct pt_regs *regs)  in advance()  argument
199 	regs->pc   = regs->npc;  in advance()
200 	regs->npc += 4;  in advance()
213 static void kernel_mna_trap_fault(struct pt_regs *regs, unsigned int insn)  in kernel_mna_trap_fault()  argument
215 	unsigned long g2 = regs->u_regs [UREG_G2];  in kernel_mna_trap_fault()
216 	unsigned long fixup = search_extables_range(regs->pc, &g2);  in kernel_mna_trap_fault()
219 		unsigned long address = compute_effective_address(regs, insn);  in kernel_mna_trap_fault()
231 	        die_if_kernel("Oops", regs);  in kernel_mna_trap_fault()
234 	regs->pc = fixup;  in kernel_mna_trap_fault()
235 	regs->npc = regs->pc + 4;  in kernel_mna_trap_fault()
236 	regs->u_regs [UREG_G2] = g2;  in kernel_mna_trap_fault()
239 asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)  in kernel_unaligned_trap()  argument
246 		       regs->pc);  in kernel_unaligned_trap()
249 		unsigned long addr = compute_effective_address(regs, insn);  in kernel_unaligned_trap()
252 		perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);  in kernel_unaligned_trap()
256 							 regs),  in kernel_unaligned_trap()
263 					   (unsigned long *) addr, regs);  in kernel_unaligned_trap()
270 			kernel_mna_trap_fault(regs, insn);  in kernel_unaligned_trap()
272 			advance(regs);  in kernel_unaligned_trap()
276 static inline int ok_for_user(struct pt_regs *regs, unsigned int insn,  in ok_for_user()  argument
283 	if ((regs->pc | regs->npc) & 3)  in ok_for_user()
288 	((void __user *)(((unsigned long *)regs->u_regs[UREG_FP])+(regnum)))  in ok_for_user()
311 static void user_mna_trap_fault(struct pt_regs *regs, unsigned int insn)  in user_mna_trap_fault()  argument
318 	info.si_addr = (void __user *)safe_compute_effective_address(regs, insn);  in user_mna_trap_fault()
323 asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn)  in user_unaligned_trap()  argument
331 	if(!ok_for_user(regs, insn, dir)) {  in user_unaligned_trap()
342 		addr = compute_effective_address(regs, insn);  in user_unaligned_trap()
343 		perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, addr);  in user_unaligned_trap()
347 							 regs),  in user_unaligned_trap()
354 					   (unsigned long *) addr, regs);  in user_unaligned_trap()
373 			advance(regs);  in user_unaligned_trap()
378 	user_mna_trap_fault(regs, insn);  in user_unaligned_trap()