Lines Matching refs:cfi
315 static void init_cfi_state(struct cfi_state *cfi) in init_cfi_state() argument
320 cfi->regs[i].base = CFI_UNDEFINED; in init_cfi_state()
321 cfi->vals[i].base = CFI_UNDEFINED; in init_cfi_state()
323 cfi->cfa.base = CFI_UNDEFINED; in init_cfi_state()
324 cfi->drap_reg = CFI_UNDEFINED; in init_cfi_state()
325 cfi->drap_offset = -1; in init_cfi_state()
332 init_cfi_state(&state->cfi); in init_insn_state()
345 struct cfi_state *cfi = calloc(1, sizeof(struct cfi_state)); in cfi_alloc() local
346 if (!cfi) { in cfi_alloc()
351 return cfi; in cfi_alloc()
364 static inline u32 cfi_key(struct cfi_state *cfi) in cfi_key() argument
366 return jhash((void *)cfi + sizeof(cfi->hash), in cfi_key()
367 sizeof(*cfi) - sizeof(cfi->hash), 0); in cfi_key()
370 static struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi) in cfi_hash_find_or_add() argument
372 struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)]; in cfi_hash_find_or_add()
376 if (!cficmp(cfi, obj)) { in cfi_hash_find_or_add()
383 *obj = *cfi; in cfi_hash_find_or_add()
389 static void cfi_hash_add(struct cfi_state *cfi) in cfi_hash_add() argument
391 struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)]; in cfi_hash_add()
393 hlist_add_head(&cfi->hash, head); in cfi_hash_add()
1815 orig_alt_group->cfi = calloc(special_alt->orig_len, in handle_group_alt()
1817 if (!orig_alt_group->cfi) { in handle_group_alt()
1937 new_alt_group->cfi = orig_alt_group->cfi; in handle_group_alt()
2277 struct cfi_state cfi = init_cfi; in read_unwind_hints() local
2328 insn->cfi = &force_undefined_cfi; in read_unwind_hints()
2354 insn->cfi = &func_cfi; in read_unwind_hints()
2358 if (insn->cfi) in read_unwind_hints()
2359 cfi = *(insn->cfi); in read_unwind_hints()
2361 if (arch_decode_hint_reg(hint->sp_reg, &cfi.cfa.base)) { in read_unwind_hints()
2366 cfi.cfa.offset = bswap_if_needed(file->elf, hint->sp_offset); in read_unwind_hints()
2367 cfi.type = hint->type; in read_unwind_hints()
2368 cfi.signal = hint->signal; in read_unwind_hints()
2370 insn->cfi = cfi_hash_find_or_add(&cfi); in read_unwind_hints()
2754 struct cfi_state *cfi = &state->cfi; in has_modified_stack_frame() local
2757 if (cfi->cfa.base != initial_func_cfi.cfa.base || cfi->drap) in has_modified_stack_frame()
2760 if (cfi->cfa.offset != initial_func_cfi.cfa.offset) in has_modified_stack_frame()
2763 if (cfi->stack_size != initial_func_cfi.cfa.offset) in has_modified_stack_frame()
2767 if (cfi->regs[i].base != initial_func_cfi.regs[i].base || in has_modified_stack_frame()
2768 cfi->regs[i].offset != initial_func_cfi.regs[i].offset) in has_modified_stack_frame()
2784 struct cfi_state *cfi = &state->cfi; in has_valid_stack_frame() local
2786 if (cfi->cfa.base == CFI_BP && in has_valid_stack_frame()
2787 check_reg_frame_pos(&cfi->regs[CFI_BP], -cfi->cfa.offset) && in has_valid_stack_frame()
2788 check_reg_frame_pos(&cfi->regs[CFI_RA], -cfi->cfa.offset + 8)) in has_valid_stack_frame()
2791 if (cfi->drap && cfi->regs[CFI_BP].base == CFI_BP) in has_valid_stack_frame()
2798 struct cfi_state *cfi, in update_cfi_state_regs() argument
2801 struct cfi_reg *cfa = &cfi->cfa; in update_cfi_state_regs()
2822 static void save_reg(struct cfi_state *cfi, unsigned char reg, int base, int offset) in save_reg() argument
2825 cfi->regs[reg].base == CFI_UNDEFINED) { in save_reg()
2826 cfi->regs[reg].base = base; in save_reg()
2827 cfi->regs[reg].offset = offset; in save_reg()
2831 static void restore_reg(struct cfi_state *cfi, unsigned char reg) in restore_reg() argument
2833 cfi->regs[reg].base = initial_func_cfi.regs[reg].base; in restore_reg()
2834 cfi->regs[reg].offset = initial_func_cfi.regs[reg].offset; in restore_reg()
2892 struct cfi_state *cfi, struct stack_op *op) in update_cfi_state() argument
2894 struct cfi_reg *cfa = &cfi->cfa; in update_cfi_state()
2895 struct cfi_reg *regs = cfi->regs; in update_cfi_state()
2898 if (cfi->force_undefined) in update_cfi_state()
2910 if (cfi->type == UNWIND_HINT_TYPE_REGS || in update_cfi_state()
2911 cfi->type == UNWIND_HINT_TYPE_REGS_PARTIAL) in update_cfi_state()
2912 return update_cfi_state_regs(insn, cfi, op); in update_cfi_state()
2926 cfi->bp_scratch = false; in update_cfi_state()
2930 op->dest.reg == CFI_BP && cfi->drap) { in update_cfi_state()
2934 regs[CFI_BP].offset = -cfi->stack_size; in update_cfi_state()
2935 cfi->bp_scratch = false; in update_cfi_state()
2950 cfi->vals[op->dest.reg].base = CFI_CFA; in update_cfi_state()
2951 cfi->vals[op->dest.reg].offset = -cfi->stack_size; in update_cfi_state()
2955 (cfa->base == CFI_BP || cfa->base == cfi->drap_reg)) { in update_cfi_state()
2962 cfi->stack_size = -cfi->regs[CFI_BP].offset; in update_cfi_state()
2969 cfi->vals[op->src.reg].base == CFI_CFA) { in update_cfi_state()
2979 cfa->offset = -cfi->vals[op->src.reg].offset; in update_cfi_state()
2980 cfi->stack_size = cfa->offset; in update_cfi_state()
2983 cfi->vals[op->src.reg].base == CFI_SP_INDIRECT && in update_cfi_state()
2984 cfi->vals[op->src.reg].offset == cfa->offset) { in update_cfi_state()
3021 cfi->vals[op->src.reg].base == CFI_SP_INDIRECT && in update_cfi_state()
3022 cfi->vals[op->src.reg].offset == cfa->offset) { in update_cfi_state()
3030 cfi->stack_size += 8; in update_cfi_state()
3040 cfi->stack_size -= op->src.offset; in update_cfi_state()
3065 cfi->stack_size = -(op->src.offset + regs[CFI_BP].offset); in update_cfi_state()
3073 cfi->drap_reg = op->dest.reg; in update_cfi_state()
3085 cfi->vals[op->dest.reg].base = CFI_CFA; in update_cfi_state()
3086 cfi->vals[op->dest.reg].offset = \ in update_cfi_state()
3087 -cfi->stack_size + op->src.offset; in update_cfi_state()
3092 if (cfi->drap && op->dest.reg == CFI_SP && in update_cfi_state()
3093 op->src.reg == cfi->drap_reg) { in update_cfi_state()
3097 cfa->offset = cfi->stack_size = -op->src.offset; in update_cfi_state()
3098 cfi->drap_reg = CFI_UNDEFINED; in update_cfi_state()
3099 cfi->drap = false; in update_cfi_state()
3103 if (op->dest.reg == cfi->cfa.base && !(next_insn && next_insn->hint)) { in update_cfi_state()
3112 (cfi->drap_reg != CFI_UNDEFINED && cfa->base != CFI_SP) || in update_cfi_state()
3113 (cfi->drap_reg == CFI_UNDEFINED && cfa->base != CFI_BP)) { in update_cfi_state()
3118 if (cfi->drap_reg != CFI_UNDEFINED) { in update_cfi_state()
3120 cfa->base = cfi->drap_reg; in update_cfi_state()
3121 cfa->offset = cfi->stack_size = 0; in update_cfi_state()
3122 cfi->drap = true; in update_cfi_state()
3141 if (!cfi->drap && op->dest.reg == cfa->base) { in update_cfi_state()
3147 if (cfi->drap && cfa->base == CFI_BP_INDIRECT && in update_cfi_state()
3148 op->dest.reg == cfi->drap_reg && in update_cfi_state()
3149 cfi->drap_offset == -cfi->stack_size) { in update_cfi_state()
3152 cfa->base = cfi->drap_reg; in update_cfi_state()
3154 cfi->drap_offset = -1; in update_cfi_state()
3156 } else if (cfi->stack_size == -regs[op->dest.reg].offset) { in update_cfi_state()
3159 restore_reg(cfi, op->dest.reg); in update_cfi_state()
3162 cfi->stack_size -= 8; in update_cfi_state()
3169 if (!cfi->drap && op->dest.reg == cfa->base && in update_cfi_state()
3174 cfa->offset = cfi->stack_size; in update_cfi_state()
3177 if (cfi->drap && op->src.reg == CFI_BP && in update_cfi_state()
3178 op->src.offset == cfi->drap_offset) { in update_cfi_state()
3181 cfa->base = cfi->drap_reg; in update_cfi_state()
3183 cfi->drap_offset = -1; in update_cfi_state()
3186 if (cfi->drap && op->src.reg == CFI_BP && in update_cfi_state()
3190 restore_reg(cfi, op->dest.reg); in update_cfi_state()
3197 restore_reg(cfi, op->dest.reg); in update_cfi_state()
3200 op->src.offset == regs[op->dest.reg].offset + cfi->stack_size) { in update_cfi_state()
3203 restore_reg(cfi, op->dest.reg); in update_cfi_state()
3217 cfi->stack_size += 8; in update_cfi_state()
3224 if (cfi->drap) { in update_cfi_state()
3225 if (op->src.reg == cfa->base && op->src.reg == cfi->drap_reg) { in update_cfi_state()
3229 cfa->offset = -cfi->stack_size; in update_cfi_state()
3232 cfi->drap_offset = -cfi->stack_size; in update_cfi_state()
3234 } else if (op->src.reg == CFI_BP && cfa->base == cfi->drap_reg) { in update_cfi_state()
3237 cfi->stack_size = 0; in update_cfi_state()
3242 save_reg(cfi, op->src.reg, CFI_BP, -cfi->stack_size); in update_cfi_state()
3248 save_reg(cfi, op->src.reg, CFI_CFA, -cfi->stack_size); in update_cfi_state()
3254 cfi->bp_scratch = true; in update_cfi_state()
3259 if (cfi->drap) { in update_cfi_state()
3260 if (op->src.reg == cfa->base && op->src.reg == cfi->drap_reg) { in update_cfi_state()
3267 cfi->drap_offset = op->dest.offset; in update_cfi_state()
3271 save_reg(cfi, op->src.reg, CFI_BP, op->dest.offset); in update_cfi_state()
3278 save_reg(cfi, op->src.reg, CFI_CFA, in update_cfi_state()
3279 op->dest.offset - cfi->cfa.offset); in update_cfi_state()
3284 save_reg(cfi, op->src.reg, CFI_CFA, in update_cfi_state()
3285 op->dest.offset - cfi->stack_size); in update_cfi_state()
3290 cfi->vals[op->dest.reg].base = CFI_SP_INDIRECT; in update_cfi_state()
3291 cfi->vals[op->dest.reg].offset = cfa->offset; in update_cfi_state()
3303 cfi->stack_size -= 8; in update_cfi_state()
3334 if (!insn->cfi) { in propagate_alt_cfi()
3339 alt_cfi = insn->alt_group->cfi; in propagate_alt_cfi()
3343 alt_cfi[group_off] = insn->cfi; in propagate_alt_cfi()
3345 if (cficmp(alt_cfi[group_off], insn->cfi)) { in propagate_alt_cfi()
3366 if (update_cfi_state(insn, next_insn, &state->cfi, op)) in handle_insn_ops()
3398 struct cfi_state *cfi1 = insn->cfi; in insn_cfi_match()
3597 if (state->cfi.bp_scratch) { in validate_return()
3676 if (!insn->hint && !insn_cfi_match(insn, &state.cfi)) in validate_branch()
3724 insn->cfi = save_insn->cfi; in validate_branch()
3728 state.cfi = *insn->cfi; in validate_branch()
3732 if (prev_insn && !cficmp(prev_insn->cfi, &state.cfi)) { in validate_branch()
3733 insn->cfi = prev_insn->cfi; in validate_branch()
3736 insn->cfi = cfi_hash_find_or_add(&state.cfi); in validate_branch()
3878 if (state.cfi.cfa.base == CFI_UNDEFINED) in validate_branch()
4220 struct cfi_state *cfi; in add_prefix_symbol() local
4249 if (!insn->cfi) { in add_prefix_symbol()
4258 cfi = cfi_hash_find_or_add(insn->cfi); in add_prefix_symbol()
4260 prev->cfi = cfi; in add_prefix_symbol()
4322 set_func_state(&state.cfi); in validate_section()
4863 if (opts.cfi) { in check()