powerpc/lib/feature-fixups.c

134 static int do_patch_fixups(long *start, long *end, unsigned int *instrs, int num)
142 		if (!is_fixup_addr_valid(dest, sizeof(*instrs) * num))
148 			patch_instruction(dest + j, ppc_inst(instrs[j]));
155 static int do_patch_entry_fixups(long *start, long *end, unsigned int *instrs,
163 		if (!is_fixup_addr_valid(dest, sizeof(*instrs) * 3))
170 			patch_instruction(dest, ppc_inst(instrs[0]));
171 			patch_instruction(dest + 2, ppc_inst(instrs[2]));
174 			patch_instruction(dest + 1, ppc_inst(instrs[1]));
175 			patch_instruction(dest + 2, ppc_inst(instrs[2]));
176 			patch_instruction(dest, ppc_inst(instrs[0]));
184 	unsigned int instrs[3];
191 	instrs[0] = PPC_RAW_NOP();
192 	instrs[1] = PPC_RAW_NOP();
193 	instrs[2] = PPC_RAW_NOP();
197 		instrs[i++] = PPC_RAW_MFLR(_R10);
198 		instrs[i++] = PPC_RAW_NOP(); /* branch patched below */
199 		instrs[i++] = PPC_RAW_MTLR(_R10);
201 		instrs[i++] = PPC_RAW_EIEIO() | 0x02000000; /* eieio + bit 6 hint */
203 		instrs[i++] = PPC_RAW_SYNC();
204 		instrs[i++] = PPC_RAW_LD(_R10, _R13, 0);
205 		instrs[i++] = PPC_RAW_ORI(_R31, _R31, 0); /* speculation barrier */
208 	i = do_patch_entry_fixups(start, end, instrs, types & STF_BARRIER_FALLBACK,
221 	unsigned int instrs[6];
228 	instrs[0] = PPC_RAW_NOP();
229 	instrs[1] = PPC_RAW_NOP();
230 	instrs[2] = PPC_RAW_NOP();
231 	instrs[3] = PPC_RAW_NOP();
232 	instrs[4] = PPC_RAW_NOP();
233 	instrs[5] = PPC_RAW_NOP();
238 			instrs[i++] = PPC_RAW_MTSPR(SPRN_HSPRG1, _R13);
239 			instrs[i++] = PPC_RAW_MFSPR(_R13, SPRN_HSPRG0);
241 			instrs[i++] = PPC_RAW_MTSPR(SPRN_SPRG2, _R13);
242 			instrs[i++] = PPC_RAW_MFSPR(_R13, SPRN_SPRG1);
244 		instrs[i++] = PPC_RAW_SYNC();
245 		instrs[i++] = PPC_RAW_LD(_R13, _R13, 0);
246 		instrs[i++] = PPC_RAW_ORI(_R31, _R31, 0); /* speculation barrier */
248 			instrs[i++] = PPC_RAW_MFSPR(_R13, SPRN_HSPRG1);
250 			instrs[i++] = PPC_RAW_MFSPR(_R13, SPRN_SPRG2);
252 		instrs[i++] = PPC_RAW_EIEIO() | 0x02000000; /* eieio + bit 6 hint */
255 	i = do_patch_fixups(start, end, instrs, ARRAY_SIZE(instrs));
313 	unsigned int instrs[4];
320 	instrs[0] = PPC_RAW_NOP();
321 	instrs[1] = PPC_RAW_NOP();
322 	instrs[2] = PPC_RAW_NOP();
323 	instrs[3] = PPC_RAW_BLR();
327 		instrs[3] = PPC_RAW_NOP();
332 		instrs[i++] = PPC_RAW_ORI(_R31, _R31, 0); /* speculation barrier */
333 		instrs[i++] = PPC_RAW_ORI(_R30, _R30, 0); /* L1d flush */
337 		instrs[i++] = PPC_RAW_MTSPR(SPRN_TRIG2, _R0);
339 	i = do_patch_fixups(start, end, instrs, ARRAY_SIZE(instrs));
354 	unsigned int instrs[3];
358 	instrs[0] = PPC_RAW_NOP();
359 	instrs[1] = PPC_RAW_NOP();
360 	instrs[2] = PPC_RAW_NOP();
364 		instrs[i++] = PPC_RAW_MFLR(_R10);
365 		instrs[i++] = PPC_RAW_NOP(); /* branch patched below */
366 		instrs[i++] = PPC_RAW_MTLR(_R10);
370 		instrs[i++] = PPC_RAW_ORI(_R31, _R31, 0); /* speculation barrier */
371 		instrs[i++] = PPC_RAW_ORI(_R30, _R30, 0); /* L1d flush */
375 		instrs[i++] = PPC_RAW_MTSPR(SPRN_TRIG2, _R0);
404 	i = do_patch_entry_fixups(start, end, instrs, types == L1D_FLUSH_FALLBACK,
409 	i += do_patch_entry_fixups(start, end, instrs, types == L1D_FLUSH_FALLBACK,
438 	unsigned int instrs[3];
445 	instrs[0] = PPC_RAW_NOP();
446 	instrs[1] = PPC_RAW_NOP();
447 	instrs[2] = PPC_RAW_NOP();
451 		instrs[0] = PPC_RAW_BRANCH(16);
455 		instrs[i++] = PPC_RAW_ORI(_R31, _R31, 0); /* speculation barrier */
456 		instrs[i++] = PPC_RAW_ORI(_R30, _R30, 0); /* L1d flush */
460 		instrs[i++] = PPC_RAW_MTSPR(SPRN_TRIG2, _R0);
462 	i = do_patch_fixups(start, end, instrs, ARRAY_SIZE(instrs));