/* On Darwin32, we need to recurse until we find the starting stuct type. */ static int _darwin_rs6000_special_round_type_align (const char *struc, int comp, int spec) { const char *_stp , *_fields = TYPE_FIELDS (struc); if (!_fields) return MAX (comp, spec); _stp = strip_array_types (_fields); if (TYPE_MODE(_stp) == _C_COMPLEX) _stp++; switch (TYPE_MODE(_stp)) { case RECORD_TYPE: case UNION_TYPE: return MAX (MAX (comp, spec), objc_alignof_type (_stp) * BITS_PER_UNIT); break; case DFmode: case _C_LNG_LNG: case _C_ULNG_LNG: return MAX (MAX (comp, spec), 64); break; default: return MAX (comp, spec); break; } }
static unsigned int increase_alignment (void) { struct varpool_node *vnode; /* Increase the alignment of all global arrays for vectorization. */ FOR_EACH_DEFINED_VARIABLE (vnode) { tree vectype, decl = vnode->symbol.decl; tree t; unsigned int alignment; t = TREE_TYPE(decl); if (TREE_CODE (t) != ARRAY_TYPE) continue; vectype = get_vectype_for_scalar_type (strip_array_types (t)); if (!vectype) continue; alignment = TYPE_ALIGN (vectype); if (DECL_ALIGN (decl) >= alignment) continue; if (vect_can_force_dr_alignment_p (decl, alignment)) { DECL_ALIGN (decl) = TYPE_ALIGN (vectype); DECL_USER_ALIGN (decl) = 1; dump_printf (MSG_NOTE, "Increasing alignment of decl: "); dump_generic_expr (MSG_NOTE, TDF_SLIM, decl); dump_printf (MSG_NOTE, "\n"); } } return 0; }
static unsigned int increase_alignment (void) { struct varpool_node *vnode; /* Increase the alignment of all global arrays for vectorization. */ for (vnode = varpool_nodes_queue; vnode; vnode = vnode->next_needed) { tree vectype, decl = vnode->decl; tree t; unsigned int alignment; t = TREE_TYPE(decl); if (TREE_CODE (t) != ARRAY_TYPE) continue; vectype = get_vectype_for_scalar_type (strip_array_types (t)); if (!vectype) continue; alignment = TYPE_ALIGN (vectype); if (DECL_ALIGN (decl) >= alignment) continue; if (vect_can_force_dr_alignment_p (decl, alignment)) { DECL_ALIGN (decl) = TYPE_ALIGN (vectype); DECL_USER_ALIGN (decl) = 1; if (dump_file) { fprintf (dump_file, "Increasing alignment of decl: "); print_generic_expr (dump_file, decl, TDF_SLIM); fprintf (dump_file, "\n"); } } } return 0; }
tree ubsan_type_descriptor (tree type, enum ubsan_print_style pstyle) { /* See through any typedefs. */ type = TYPE_MAIN_VARIANT (type); tree decl = decl_for_type_lookup (type); /* It is possible that some of the earlier created DECLs were found unused, in that case they weren't emitted and varpool_get_node returns NULL node on them. But now we really need them. Thus, renew them here. */ if (decl != NULL_TREE && varpool_get_node (decl)) return build_fold_addr_expr (decl); tree dtype = ubsan_type_descriptor_type (); tree type2 = type; const char *tname = NULL; char *pretty_name; unsigned char deref_depth = 0; unsigned short tkind, tinfo; /* Get the name of the type, or the name of the pointer type. */ if (pstyle == UBSAN_PRINT_POINTER) { gcc_assert (POINTER_TYPE_P (type)); type2 = TREE_TYPE (type); /* Remove any '*' operators from TYPE. */ while (POINTER_TYPE_P (type2)) deref_depth++, type2 = TREE_TYPE (type2); if (TREE_CODE (type2) == METHOD_TYPE) type2 = TYPE_METHOD_BASETYPE (type2); } /* If an array, get its type. */ type2 = strip_array_types (type2); if (pstyle == UBSAN_PRINT_ARRAY) { while (POINTER_TYPE_P (type2)) deref_depth++, type2 = TREE_TYPE (type2); } if (TYPE_NAME (type2) != NULL) { if (TREE_CODE (TYPE_NAME (type2)) == IDENTIFIER_NODE) tname = IDENTIFIER_POINTER (TYPE_NAME (type2)); else if (DECL_NAME (TYPE_NAME (type2)) != NULL) tname = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type2))); } if (tname == NULL) /* We weren't able to determine the type name. */ tname = "<unknown>"; /* Decorate the type name with '', '*', "struct", or "union". */ pretty_name = (char *) alloca (strlen (tname) + 16 + deref_depth); if (pstyle == UBSAN_PRINT_POINTER) { int pos = sprintf (pretty_name, "'%s%s%s%s%s%s%s", TYPE_VOLATILE (type2) ? "volatile " : "", TYPE_READONLY (type2) ? "const " : "", TYPE_RESTRICT (type2) ? "restrict " : "", TYPE_ATOMIC (type2) ? "_Atomic " : "", TREE_CODE (type2) == RECORD_TYPE ? "struct " : TREE_CODE (type2) == UNION_TYPE ? "union " : "", tname, deref_depth == 0 ? "" : " "); while (deref_depth-- > 0) pretty_name[pos++] = '*'; pretty_name[pos++] = '\''; pretty_name[pos] = '\0'; } else if (pstyle == UBSAN_PRINT_ARRAY) { /* Pretty print the array dimensions. */ gcc_assert (TREE_CODE (type) == ARRAY_TYPE); tree t = type; int pos = sprintf (pretty_name, "'%s ", tname); while (deref_depth-- > 0) pretty_name[pos++] = '*'; while (TREE_CODE (t) == ARRAY_TYPE) { pretty_name[pos++] = '['; tree dom = TYPE_DOMAIN (t); if (dom && TREE_CODE (TYPE_MAX_VALUE (dom)) == INTEGER_CST) pos += sprintf (&pretty_name[pos], HOST_WIDE_INT_PRINT_DEC, tree_to_shwi (TYPE_MAX_VALUE (dom)) + 1); else /* ??? We can't determine the variable name; print VLA unspec. */ pretty_name[pos++] = '*'; pretty_name[pos++] = ']'; t = TREE_TYPE (t); } pretty_name[pos++] = '\''; pretty_name[pos] = '\0'; /* Save the tree with stripped types. */ type = t; } else sprintf (pretty_name, "'%s'", tname); switch (TREE_CODE (type)) { case BOOLEAN_TYPE: case ENUMERAL_TYPE: case INTEGER_TYPE: tkind = 0x0000; break; case REAL_TYPE: /* FIXME: libubsan right now only supports float, double and long double type formats. */ if (TYPE_MODE (type) == TYPE_MODE (float_type_node) || TYPE_MODE (type) == TYPE_MODE (double_type_node) || TYPE_MODE (type) == TYPE_MODE (long_double_type_node)) tkind = 0x0001; else tkind = 0xffff; break; default: tkind = 0xffff; break; } tinfo = get_ubsan_type_info_for_type (type); /* Create a new VAR_DECL of type descriptor. */ char tmp_name[32]; static unsigned int type_var_id_num; ASM_GENERATE_INTERNAL_LABEL (tmp_name, "Lubsan_type", type_var_id_num++); decl = build_decl (UNKNOWN_LOCATION, VAR_DECL, get_identifier (tmp_name), dtype); TREE_STATIC (decl) = 1; TREE_PUBLIC (decl) = 0; DECL_ARTIFICIAL (decl) = 1; DECL_IGNORED_P (decl) = 1; DECL_EXTERNAL (decl) = 0; size_t len = strlen (pretty_name); tree str = build_string (len + 1, pretty_name); TREE_TYPE (str) = build_array_type (char_type_node, build_index_type (size_int (len))); TREE_READONLY (str) = 1; TREE_STATIC (str) = 1; tree ctor = build_constructor_va (dtype, 3, NULL_TREE, build_int_cst (short_unsigned_type_node, tkind), NULL_TREE, build_int_cst (short_unsigned_type_node, tinfo), NULL_TREE, str); TREE_CONSTANT (ctor) = 1; TREE_STATIC (ctor) = 1; DECL_INITIAL (decl) = ctor; varpool_finalize_decl (decl); /* Save the VAR_DECL into the hash table. */ decl_for_type_insert (type, decl); return build_fold_addr_expr (decl); }
tree ubsan_type_descriptor (tree type, bool want_pointer_type_p) { /* See through any typedefs. */ type = TYPE_MAIN_VARIANT (type); tree decl = decl_for_type_lookup (type); /* It is possible that some of the earlier created DECLs were found unused, in that case they weren't emitted and varpool_get_node returns NULL node on them. But now we really need them. Thus, renew them here. */ if (decl != NULL_TREE && varpool_get_node (decl)) return build_fold_addr_expr (decl); tree dtype = ubsan_type_descriptor_type (); tree type2 = type; const char *tname = NULL; char *pretty_name; unsigned char deref_depth = 0; unsigned short tkind, tinfo; /* Get the name of the type, or the name of the pointer type. */ if (want_pointer_type_p) { gcc_assert (POINTER_TYPE_P (type)); type2 = TREE_TYPE (type); /* Remove any '*' operators from TYPE. */ while (POINTER_TYPE_P (type2)) deref_depth++, type2 = TREE_TYPE (type2); if (TREE_CODE (type2) == METHOD_TYPE) type2 = TYPE_METHOD_BASETYPE (type2); } /* If an array, get its type. */ type2 = strip_array_types (type2); if (TYPE_NAME (type2) != NULL) { if (TREE_CODE (TYPE_NAME (type2)) == IDENTIFIER_NODE) tname = IDENTIFIER_POINTER (TYPE_NAME (type2)); else tname = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type2))); } if (tname == NULL) /* We weren't able to determine the type name. */ tname = "<unknown>"; /* Decorate the type name with '', '*', "struct", or "union". */ pretty_name = (char *) alloca (strlen (tname) + 16 + deref_depth); if (want_pointer_type_p) { int pos = sprintf (pretty_name, "'%s%s%s%s%s%s%s", TYPE_VOLATILE (type2) ? "volatile " : "", TYPE_READONLY (type2) ? "const " : "", TYPE_RESTRICT (type2) ? "restrict " : "", TYPE_ATOMIC (type2) ? "_Atomic " : "", TREE_CODE (type2) == RECORD_TYPE ? "struct " : TREE_CODE (type2) == UNION_TYPE ? "union " : "", tname, deref_depth == 0 ? "" : " "); while (deref_depth-- > 0) pretty_name[pos++] = '*'; pretty_name[pos++] = '\''; pretty_name[pos] = '\0'; } else sprintf (pretty_name, "'%s'", tname); switch (TREE_CODE (type)) { case BOOLEAN_TYPE: case ENUMERAL_TYPE: case INTEGER_TYPE: tkind = 0x0000; break; case REAL_TYPE: tkind = 0x0001; break; default: tkind = 0xffff; break; } tinfo = get_ubsan_type_info_for_type (type); /* Create a new VAR_DECL of type descriptor. */ char tmp_name[32]; static unsigned int type_var_id_num; ASM_GENERATE_INTERNAL_LABEL (tmp_name, "Lubsan_type", type_var_id_num++); decl = build_decl (UNKNOWN_LOCATION, VAR_DECL, get_identifier (tmp_name), dtype); TREE_STATIC (decl) = 1; TREE_PUBLIC (decl) = 0; DECL_ARTIFICIAL (decl) = 1; DECL_IGNORED_P (decl) = 1; DECL_EXTERNAL (decl) = 0; size_t len = strlen (pretty_name); tree str = build_string (len + 1, pretty_name); TREE_TYPE (str) = build_array_type (char_type_node, build_index_type (size_int (len))); TREE_READONLY (str) = 1; TREE_STATIC (str) = 1; tree ctor = build_constructor_va (dtype, 3, NULL_TREE, build_int_cst (short_unsigned_type_node, tkind), NULL_TREE, build_int_cst (short_unsigned_type_node, tinfo), NULL_TREE, str); TREE_CONSTANT (ctor) = 1; TREE_STATIC (ctor) = 1; DECL_INITIAL (decl) = ctor; rest_of_decl_compilation (decl, 1, 0); /* Save the VAR_DECL into the hash table. */ decl_for_type_insert (type, decl); return build_fold_addr_expr (decl); }