Lines Matching refs:cfi
247 static void init_cfi_state(struct cfi_state *cfi) in init_cfi_state() argument
252 cfi->regs[i].base = CFI_UNDEFINED; in init_cfi_state()
253 cfi->vals[i].base = CFI_UNDEFINED; in init_cfi_state()
255 cfi->cfa.base = CFI_UNDEFINED; in init_cfi_state()
256 cfi->drap_reg = CFI_UNDEFINED; in init_cfi_state()
257 cfi->drap_offset = -1; in init_cfi_state()
263 init_cfi_state(&state->cfi); in init_insn_state()
276 struct cfi_state *cfi = calloc(sizeof(struct cfi_state), 1); in cfi_alloc() local
277 if (!cfi) { in cfi_alloc()
282 return cfi; in cfi_alloc()
295 static inline u32 cfi_key(struct cfi_state *cfi) in cfi_key() argument
297 return jhash((void *)cfi + sizeof(cfi->hash), in cfi_key()
298 sizeof(*cfi) - sizeof(cfi->hash), 0); in cfi_key()
301 static struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi) in cfi_hash_find_or_add() argument
303 struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)]; in cfi_hash_find_or_add()
307 if (!cficmp(cfi, obj)) { in cfi_hash_find_or_add()
314 *obj = *cfi; in cfi_hash_find_or_add()
320 static void cfi_hash_add(struct cfi_state *cfi) in cfi_hash_add() argument
322 struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)]; in cfi_hash_add()
324 hlist_add_head(&cfi->hash, head); in cfi_hash_add()
1379 orig_alt_group->cfi = calloc(special_alt->orig_len, in handle_group_alt()
1381 if (!orig_alt_group->cfi) { in handle_group_alt()
1496 new_alt_group->cfi = orig_alt_group->cfi; in handle_group_alt()
1798 struct cfi_state cfi = init_cfi; in read_unwind_hints() local
1864 insn->cfi = &func_cfi; in read_unwind_hints()
1868 if (insn->cfi) in read_unwind_hints()
1869 cfi = *(insn->cfi); in read_unwind_hints()
1871 if (arch_decode_hint_reg(hint->sp_reg, &cfi.cfa.base)) { in read_unwind_hints()
1877 cfi.cfa.offset = hint->sp_offset; in read_unwind_hints()
1878 cfi.type = hint->type; in read_unwind_hints()
1879 cfi.end = hint->end; in read_unwind_hints()
1881 insn->cfi = cfi_hash_find_or_add(&cfi); in read_unwind_hints()
2163 struct cfi_state *cfi = &state->cfi; in has_modified_stack_frame() local
2166 if (cfi->cfa.base != initial_func_cfi.cfa.base || cfi->drap) in has_modified_stack_frame()
2169 if (cfi->cfa.offset != initial_func_cfi.cfa.offset) in has_modified_stack_frame()
2172 if (cfi->stack_size != initial_func_cfi.cfa.offset) in has_modified_stack_frame()
2176 if (cfi->regs[i].base != initial_func_cfi.regs[i].base || in has_modified_stack_frame()
2177 cfi->regs[i].offset != initial_func_cfi.regs[i].offset) in has_modified_stack_frame()
2186 struct cfi_state *cfi = &state->cfi; in has_valid_stack_frame() local
2188 if (cfi->cfa.base == CFI_BP && cfi->regs[CFI_BP].base == CFI_CFA && in has_valid_stack_frame()
2189 cfi->regs[CFI_BP].offset == -16) in has_valid_stack_frame()
2192 if (cfi->drap && cfi->regs[CFI_BP].base == CFI_BP) in has_valid_stack_frame()
2199 struct cfi_state *cfi, in update_cfi_state_regs() argument
2202 struct cfi_reg *cfa = &cfi->cfa; in update_cfi_state_regs()
2223 static void save_reg(struct cfi_state *cfi, unsigned char reg, int base, int offset) in save_reg() argument
2226 cfi->regs[reg].base == CFI_UNDEFINED) { in save_reg()
2227 cfi->regs[reg].base = base; in save_reg()
2228 cfi->regs[reg].offset = offset; in save_reg()
2232 static void restore_reg(struct cfi_state *cfi, unsigned char reg) in restore_reg() argument
2234 cfi->regs[reg].base = initial_func_cfi.regs[reg].base; in restore_reg()
2235 cfi->regs[reg].offset = initial_func_cfi.regs[reg].offset; in restore_reg()
2291 static int update_cfi_state(struct instruction *insn, struct cfi_state *cfi, in update_cfi_state() argument
2294 struct cfi_reg *cfa = &cfi->cfa; in update_cfi_state()
2295 struct cfi_reg *regs = cfi->regs; in update_cfi_state()
2306 if (cfi->type == UNWIND_HINT_TYPE_REGS || in update_cfi_state()
2307 cfi->type == UNWIND_HINT_TYPE_REGS_PARTIAL) in update_cfi_state()
2308 return update_cfi_state_regs(insn, cfi, op); in update_cfi_state()
2323 cfi->bp_scratch = false; in update_cfi_state()
2327 op->dest.reg == CFI_BP && cfi->drap) { in update_cfi_state()
2331 regs[CFI_BP].offset = -cfi->stack_size; in update_cfi_state()
2332 cfi->bp_scratch = false; in update_cfi_state()
2347 cfi->vals[op->dest.reg].base = CFI_CFA; in update_cfi_state()
2348 cfi->vals[op->dest.reg].offset = -cfi->stack_size; in update_cfi_state()
2359 cfi->stack_size = -cfi->regs[CFI_BP].offset; in update_cfi_state()
2366 cfi->vals[op->src.reg].base == CFI_CFA) { in update_cfi_state()
2376 cfa->offset = -cfi->vals[op->src.reg].offset; in update_cfi_state()
2377 cfi->stack_size = cfa->offset; in update_cfi_state()
2391 cfi->stack_size -= op->src.offset; in update_cfi_state()
2400 cfi->stack_size = -(op->src.offset + regs[CFI_BP].offset); in update_cfi_state()
2407 cfi->drap_reg = op->dest.reg; in update_cfi_state()
2419 cfi->vals[op->dest.reg].base = CFI_CFA; in update_cfi_state()
2420 cfi->vals[op->dest.reg].offset = \ in update_cfi_state()
2421 -cfi->stack_size + op->src.offset; in update_cfi_state()
2426 if (cfi->drap && op->dest.reg == CFI_SP && in update_cfi_state()
2427 op->src.reg == cfi->drap_reg) { in update_cfi_state()
2431 cfa->offset = cfi->stack_size = -op->src.offset; in update_cfi_state()
2432 cfi->drap_reg = CFI_UNDEFINED; in update_cfi_state()
2433 cfi->drap = false; in update_cfi_state()
2437 if (op->dest.reg == cfi->cfa.base) { in update_cfi_state()
2447 (cfi->drap_reg != CFI_UNDEFINED && cfa->base != CFI_SP) || in update_cfi_state()
2448 (cfi->drap_reg == CFI_UNDEFINED && cfa->base != CFI_BP)) { in update_cfi_state()
2454 if (cfi->drap_reg != CFI_UNDEFINED) { in update_cfi_state()
2456 cfa->base = cfi->drap_reg; in update_cfi_state()
2457 cfa->offset = cfi->stack_size = 0; in update_cfi_state()
2458 cfi->drap = true; in update_cfi_state()
2470 if (!cfi->drap && op->dest.reg == cfa->base) { in update_cfi_state()
2476 if (cfi->drap && cfa->base == CFI_BP_INDIRECT && in update_cfi_state()
2477 op->dest.reg == cfi->drap_reg && in update_cfi_state()
2478 cfi->drap_offset == -cfi->stack_size) { in update_cfi_state()
2481 cfa->base = cfi->drap_reg; in update_cfi_state()
2483 cfi->drap_offset = -1; in update_cfi_state()
2485 } else if (regs[op->dest.reg].offset == -cfi->stack_size) { in update_cfi_state()
2488 restore_reg(cfi, op->dest.reg); in update_cfi_state()
2491 cfi->stack_size -= 8; in update_cfi_state()
2498 if (cfi->drap && op->src.reg == CFI_BP && in update_cfi_state()
2499 op->src.offset == cfi->drap_offset) { in update_cfi_state()
2502 cfa->base = cfi->drap_reg; in update_cfi_state()
2504 cfi->drap_offset = -1; in update_cfi_state()
2507 if (cfi->drap && op->src.reg == CFI_BP && in update_cfi_state()
2511 restore_reg(cfi, op->dest.reg); in update_cfi_state()
2518 restore_reg(cfi, op->dest.reg); in update_cfi_state()
2533 cfi->stack_size += 8; in update_cfi_state()
2540 if (cfi->drap) { in update_cfi_state()
2541 if (op->src.reg == cfa->base && op->src.reg == cfi->drap_reg) { in update_cfi_state()
2545 cfa->offset = -cfi->stack_size; in update_cfi_state()
2548 cfi->drap_offset = -cfi->stack_size; in update_cfi_state()
2550 } else if (op->src.reg == CFI_BP && cfa->base == cfi->drap_reg) { in update_cfi_state()
2553 cfi->stack_size = 0; in update_cfi_state()
2558 save_reg(cfi, op->src.reg, CFI_BP, -cfi->stack_size); in update_cfi_state()
2564 save_reg(cfi, op->src.reg, CFI_CFA, -cfi->stack_size); in update_cfi_state()
2570 cfi->bp_scratch = true; in update_cfi_state()
2575 if (cfi->drap) { in update_cfi_state()
2576 if (op->src.reg == cfa->base && op->src.reg == cfi->drap_reg) { in update_cfi_state()
2583 cfi->drap_offset = op->dest.offset; in update_cfi_state()
2587 save_reg(cfi, op->src.reg, CFI_BP, op->dest.offset); in update_cfi_state()
2594 save_reg(cfi, op->src.reg, CFI_CFA, in update_cfi_state()
2595 op->dest.offset - cfi->cfa.offset); in update_cfi_state()
2601 if ((!cfi->drap && cfa->base != CFI_BP) || in update_cfi_state()
2602 (cfi->drap && cfa->base != cfi->drap_reg)) { in update_cfi_state()
2610 cfi->stack_size = -cfi->regs[CFI_BP].offset - 8; in update_cfi_state()
2611 restore_reg(cfi, CFI_BP); in update_cfi_state()
2613 if (!cfi->drap) { in update_cfi_state()
2628 cfi->stack_size -= 8; in update_cfi_state()
2660 if (!insn->cfi) { in propagate_alt_cfi()
2665 alt_cfi = insn->alt_group->cfi; in propagate_alt_cfi()
2669 alt_cfi[group_off] = insn->cfi; in propagate_alt_cfi()
2671 if (cficmp(alt_cfi[group_off], insn->cfi)) { in propagate_alt_cfi()
2687 if (update_cfi_state(insn, &state->cfi, op)) in handle_insn_ops()
2717 struct cfi_state *cfi1 = insn->cfi; in insn_cfi_match()
2874 if (state->cfi.bp_scratch) { in validate_return()
2933 if (!insn->hint && !insn_cfi_match(insn, &state.cfi)) in validate_branch()
2971 insn->cfi = save_insn->cfi; in validate_branch()
2975 state.cfi = *insn->cfi; in validate_branch()
2979 if (prev_insn && !cficmp(prev_insn->cfi, &state.cfi)) { in validate_branch()
2980 insn->cfi = prev_insn->cfi; in validate_branch()
2983 insn->cfi = cfi_hash_find_or_add(&state.cfi); in validate_branch()
3141 if (state.cfi.cfa.base == CFI_UNDEFINED) in validate_branch()
3485 set_func_state(&state.cfi); in validate_section()