sparc/kernel/visemul.c

151 static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs)
156 		return (!reg ? 0 : regs->u_regs[reg]);
158 	fp = regs->u_regs[UREG_FP];
160 	if (regs->tstate & TSTATE_PRIV) {
177 							  struct pt_regs *regs)
179 	unsigned long fp = regs->u_regs[UREG_FP];
182 	BUG_ON(regs->tstate & TSTATE_PRIV);
196 						   struct pt_regs *regs)
199 	BUG_ON(regs->tstate & TSTATE_PRIV);
201 	return &regs->u_regs[reg];
204 static void store_reg(struct pt_regs *regs, unsigned long val, unsigned long rd)
207 		unsigned long *rd_kern = __fetch_reg_addr_kern(rd, regs);
211 		unsigned long __user *rd_user = __fetch_reg_addr_user(rd, regs);
213 		if (!test_thread_64bit_stack(regs->u_regs[UREG_FP]))
226 	return *(unsigned long *) &f->regs[insn_regnum];
235 	return (unsigned long *) &f->regs[insn_regnum];
241 	return f->regs[insn_regnum];
247 	return &f->regs[insn_regnum];
294 static void edge(struct pt_regs *regs, unsigned int insn, unsigned int opf)
300 	orig_rs1 = rs1 = fetch_reg(RS1(insn), regs);
301 	orig_rs2 = rs2 = fetch_reg(RS2(insn), regs);
350 	store_reg(regs, rd_val, RD(insn));
366 		tstate = regs->tstate & ~(TSTATE_XCC | TSTATE_ICC);
367 		regs->tstate = tstate | (ccr << 32UL);
372 static void array(struct pt_regs *regs, unsigned int insn, unsigned int opf)
378 	rs1 = fetch_reg(RS1(insn), regs);
379 	rs2 = fetch_reg(RS2(insn), regs);
403 	store_reg(regs, rd_val, RD(insn));
406 static void bmask(struct pt_regs *regs, unsigned int insn)
411 	rs1 = fetch_reg(RS1(insn), regs);
412 	rs2 = fetch_reg(RS2(insn), regs);
415 	store_reg(regs, rd_val, RD(insn));
422 static void bshuffle(struct pt_regs *regs, unsigned int insn)
448 static void pdist(struct pt_regs *regs, unsigned int insn)
477 static void pformat(struct pt_regs *regs, unsigned int insn, unsigned int opf)
589 static void pmul(struct pt_regs *regs, unsigned int insn, unsigned int opf)
705 static void pcmp(struct pt_regs *regs, unsigned int insn, unsigned int opf)
798 	store_reg(regs, rd_val, RD(insn));
804 int vis_emul(struct pt_regs *regs, unsigned int insn)
806 	unsigned long pc = regs->tpc;
809 	BUG_ON(regs->tstate & TSTATE_PRIV);
811 	perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0);
832 		pformat(regs, insn, opf);
843 		pmul(regs, insn, opf);
855 		pcmp(regs, insn, opf);
871 		edge(regs, insn, opf);
876 		pdist(regs, insn);
883 		array(regs, insn, opf);
888 		bmask(regs, insn);
892 		bshuffle(regs, insn);
896 	regs->tpc = regs->tnpc;
897 	regs->tnpc += 4;