diff options
Diffstat (limited to 'gdb/c-valprint.c')
| -rw-r--r-- | gdb/c-valprint.c | 210 |
1 files changed, 124 insertions, 86 deletions
diff --git a/gdb/c-valprint.c b/gdb/c-valprint.c index 20ac633..e583a32 100644 --- a/gdb/c-valprint.c +++ b/gdb/c-valprint.c @@ -36,14 +36,17 @@ stream STREAM. */ static void -print_function_pointer_address (struct gdbarch *gdbarch, CORE_ADDR address, - struct ui_file *stream, int addressprint) +print_function_pointer_address (struct gdbarch *gdbarch, + CORE_ADDR address, + struct ui_file *stream, + int addressprint) { - CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (gdbarch, address, - ¤t_target); + CORE_ADDR func_addr + = gdbarch_convert_from_func_ptr_addr (gdbarch, address, + ¤t_target); - /* If the function pointer is represented by a description, print the - address of the description. */ + /* If the function pointer is represented by a description, print + the address of the description. */ if (addressprint && func_addr != address) { fputs_filtered ("@", stream); @@ -69,8 +72,8 @@ textual_name (const char *name) /* Apply a heuristic to decide whether an array of TYPE or a pointer to TYPE should be printed as a textual string. Return non-zero if it should, or zero if it should be treated as an array of integers - or pointer to integers. FORMAT is the current format letter, - or 0 if none. + or pointer to integers. FORMAT is the current format letter, or 0 + if none. We guess that "char" is a character. Explicitly signed and unsigned character types are also characters. Integer data from @@ -119,8 +122,8 @@ c_textual_element_type (struct type *type, char format) if (format == 's') { - /* Print this as a string if we can manage it. For now, no - wide character support. */ + /* Print this as a string if we can manage it. For now, no wide + character support. */ if (TYPE_CODE (true_type) == TYPE_CODE_INT && TYPE_LENGTH (true_type) == 1) return 1; @@ -140,22 +143,23 @@ c_textual_element_type (struct type *type, char format) } -/* Print data of type TYPE located at VALADDR (within GDB), which came from - the inferior at address ADDRESS, onto stdio stream STREAM according to - OPTIONS. The data at VALADDR is in target byte order. +/* Print data of type TYPE located at VALADDR (within GDB), which came + from the inferior at address ADDRESS, onto stdio stream STREAM + according to OPTIONS. The data at VALADDR is in target byte order. - If the data are a string pointer, returns the number of string characters - printed. */ + If the data are a string pointer, returns the number of string + characters printed. */ int -c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, - CORE_ADDR address, struct ui_file *stream, int recurse, +c_val_print (struct type *type, const gdb_byte *valaddr, + int embedded_offset, CORE_ADDR address, + struct ui_file *stream, int recurse, const struct value *original_value, const struct value_print_options *options) { struct gdbarch *gdbarch = get_type_arch (type); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); - unsigned int i = 0; /* Number of characters printed */ + unsigned int i = 0; /* Number of characters printed. */ unsigned len; struct type *elttype, *unresolved_elttype; struct type *unresolved_type = type; @@ -185,13 +189,14 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, /* Print arrays of textual chars with a string syntax, as long as the entire array is valid. */ - if (c_textual_element_type (unresolved_elttype, options->format) + if (c_textual_element_type (unresolved_elttype, + options->format) && value_bits_valid (original_value, TARGET_CHAR_BIT * embedded_offset, TARGET_CHAR_BIT * TYPE_LENGTH (type))) { - /* If requested, look for the first null char and only print - elements up to it. */ + /* If requested, look for the first null char and only + print elements up to it. */ if (options->stop_print_at_null) { unsigned int temp_len; @@ -216,24 +221,28 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, { fprintf_filtered (stream, "{"); /* If this is a virtual function table, print the 0th - entry specially, and the rest of the members normally. */ + entry specially, and the rest of the members + normally. */ if (cp_is_vtbl_ptr_type (elttype)) { i = 1; - fprintf_filtered (stream, _("%d vtable entries"), len - 1); + fprintf_filtered (stream, _("%d vtable entries"), + len - 1); } else { i = 0; } val_print_array_elements (type, valaddr + embedded_offset, - address + embedded_offset, stream, - recurse, original_value, options, i); + address + embedded_offset, + stream, recurse, + original_value, options, i); fprintf_filtered (stream, "}"); } break; } - /* Array of unspecified length: treat like pointer to first elt. */ + /* Array of unspecified length: treat like pointer to first + elt. */ addr = address; goto print_unpacked_pointer; @@ -262,7 +271,8 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, { /* Print the unmangled name if desired. */ /* Print vtable entry - we only get here if we ARE using - -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ + -fvtable_thunks. (Otherwise, look under + TYPE_CODE_STRUCT.) */ CORE_ADDR addr = extract_typed_address (valaddr + embedded_offset, type); @@ -281,7 +291,8 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, /* Try to print what function it points to. */ print_function_pointer_address (gdbarch, addr, stream, options->addressprint); - /* Return value is irrelevant except for string pointers. */ + /* Return value is irrelevant except for string + pointers. */ return (0); } @@ -291,16 +302,20 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, /* For a pointer to a textual type, also print the string pointed to, unless pointer is null. */ - if (c_textual_element_type (unresolved_elttype, options->format) + if (c_textual_element_type (unresolved_elttype, + options->format) && addr != 0) { - i = val_print_string (unresolved_elttype, NULL, addr, -1, stream, - options); + i = val_print_string (unresolved_elttype, NULL, + addr, -1, + stream, options); } else if (cp_is_vtbl_member (type)) { - /* print vtbl's nicely */ - CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); + /* Print vtbl's nicely. */ + CORE_ADDR vt_address = unpack_pointer (type, + valaddr + + embedded_offset); struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (vt_address); @@ -320,8 +335,9 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, int is_this_fld; if (msymbol != NULL) - wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block, - VAR_DOMAIN, &is_this_fld); + wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), + block, VAR_DOMAIN, + &is_this_fld); if (wsym) { @@ -332,8 +348,8 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, wtype = unresolved_elttype; } vt_val = value_at (wtype, vt_address); - common_val_print (vt_val, stream, recurse + 1, options, - current_language); + common_val_print (vt_val, stream, recurse + 1, + options, current_language); if (options->pretty) { fprintf_filtered (stream, "\n"); @@ -342,9 +358,10 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, } } - /* Return number of characters printed, including the terminating - '\0' if we reached the end. val_print_string takes care including - the terminating '\0' if necessary. */ + /* Return number of characters printed, including the + terminating '\0' if we reached the end. val_print_string + takes care including the terminating '\0' if + necessary. */ return i; } break; @@ -392,10 +409,13 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, { /* Print the unmangled name if desired. */ /* Print vtable entry - we only get here if NOT using - -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ - int offset = (embedded_offset + - TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8); - struct type *field_type = TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET); + -fvtable_thunks. (Otherwise, look under + TYPE_CODE_PTR.) */ + int offset = (embedded_offset + + TYPE_FIELD_BITPOS (type, + VTBL_FNADDR_OFFSET) / 8); + struct type *field_type = TYPE_FIELD_TYPE (type, + VTBL_FNADDR_OFFSET); CORE_ADDR addr = extract_typed_address (valaddr + offset, field_type); @@ -404,8 +424,10 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, } else cp_print_value_fields_rtti (type, valaddr, - embedded_offset, address, stream, - recurse, original_value, options, NULL, 0); + embedded_offset, address, + stream, recurse, + original_value, options, + NULL, 0); break; case TYPE_CODE_ENUM: @@ -440,7 +462,8 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, print_scalar_formatted (valaddr + embedded_offset, type, options, 0, stream); else - val_print_type_code_flags (type, valaddr + embedded_offset, stream); + val_print_type_code_flags (type, valaddr + embedded_offset, + stream); break; case TYPE_CODE_FUNC: @@ -451,8 +474,9 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, options, 0, stream); break; } - /* FIXME, we should consider, at least for ANSI C language, eliminating - the distinction made between FUNCs and POINTERs to FUNCs. */ + /* FIXME, we should consider, at least for ANSI C language, + eliminating the distinction made between FUNCs and POINTERs + to FUNCs. */ fprintf_filtered (stream, "{"); type_print (type, "", stream, -1); fprintf_filtered (stream, "} "); @@ -483,12 +507,12 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, case TYPE_CODE_RANGE: /* FIXME: create_range_type does not set the unsigned bit in a - range type (I think it probably should copy it from the target - type), so we won't print values which are too large to + range type (I think it probably should copy it from the + target type), so we won't print values which are too large to fit in a signed integer correctly. */ /* FIXME: Doesn't handle ranges of enums correctly. (Can't just - print with the target type, though, because the size of our type - and the target type might differ). */ + print with the target type, though, because the size of our + type and the target type might differ). */ /* FALLTHROUGH */ case TYPE_CODE_INT: @@ -503,15 +527,18 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, } else { - val_print_type_code_int (type, valaddr + embedded_offset, stream); - /* C and C++ has no single byte int type, char is used instead. - Since we don't know whether the value is really intended to - be used as an integer or a character, print the character - equivalent as well. */ + val_print_type_code_int (type, valaddr + embedded_offset, + stream); + /* C and C++ has no single byte int type, char is used + instead. Since we don't know whether the value is really + intended to be used as an integer or a character, print + the character equivalent as well. */ if (c_textual_element_type (unresolved_type, options->format)) { fputs_filtered (" ", stream); - LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr + embedded_offset), + LA_PRINT_CHAR ((unsigned char) unpack_long (type, + valaddr + + embedded_offset), unresolved_type, stream); } } @@ -555,7 +582,8 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, print_scalar_formatted (valaddr + embedded_offset, type, options, 0, stream); else - print_decimal_floating (valaddr + embedded_offset, type, stream); + print_decimal_floating (valaddr + embedded_offset, + type, stream); break; case TYPE_CODE_VOID: @@ -567,9 +595,10 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, break; case TYPE_CODE_UNDEF: - /* This happens (without TYPE_FLAG_STUB set) on systems which don't use - dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" - and no complete type for struct foo in that file. */ + /* This happens (without TYPE_FLAG_STUB set) on systems which + don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a + "struct foo *bar" and no complete type for struct foo in that + file. */ fprintf_filtered (stream, _("<incomplete type>")); break; @@ -579,7 +608,8 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, TYPE_TARGET_TYPE (type), options, 0, stream); else - print_floating (valaddr + embedded_offset, TYPE_TARGET_TYPE (type), + print_floating (valaddr + embedded_offset, + TYPE_TARGET_TYPE (type), stream); fprintf_filtered (stream, " + "); if (options->format) @@ -596,7 +626,8 @@ c_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, break; default: - error (_("Invalid C/C++ type code %d in symbol table."), TYPE_CODE (type)); + error (_("Invalid C/C++ type code %d in symbol table."), + TYPE_CODE (type)); } gdb_flush (stream); return (0); @@ -635,10 +666,11 @@ c_value_print (struct value *val, struct ui_file *stream, if (TYPE_CODE (val_type) == TYPE_CODE_PTR && TYPE_NAME (val_type) == NULL && TYPE_NAME (TYPE_TARGET_TYPE (val_type)) != NULL - && (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (val_type)), "char") == 0 + && (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (val_type)), + "char") == 0 || textual_name (TYPE_NAME (TYPE_TARGET_TYPE (val_type))))) { - /* Print nothing */ + /* Print nothing. */ } else if (options->objectprint && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS)) @@ -647,35 +679,39 @@ c_value_print (struct value *val, struct ui_file *stream, if (TYPE_CODE(type) == TYPE_CODE_REF) { /* Copy value, change to pointer, so we don't get an - * error about a non-pointer type in value_rtti_target_type - */ + error about a non-pointer type in + value_rtti_target_type. */ struct value *temparg; temparg=value_copy(val); - deprecated_set_value_type (temparg, lookup_pointer_type (TYPE_TARGET_TYPE(type))); - val=temparg; + deprecated_set_value_type + (temparg, lookup_pointer_type (TYPE_TARGET_TYPE (type))); + val = temparg; } - /* Pointer to class, check real type of object */ + /* Pointer to class, check real type of object. */ fprintf_filtered (stream, "("); - real_type = value_rtti_target_type (val, &full, &top, &using_enc); + real_type = value_rtti_target_type (val, &full, + &top, &using_enc); if (real_type) { - /* RTTI entry found */ + /* RTTI entry found. */ if (TYPE_CODE (type) == TYPE_CODE_PTR) { - /* create a pointer type pointing to the real type */ + /* Create a pointer type pointing to the real + type. */ type = lookup_pointer_type (real_type); } else { - /* create a reference type referencing the real type */ + /* Create a reference type referencing the real + type. */ type = lookup_reference_type (real_type); } - /* JYG: Need to adjust pointer value. */ + /* JYG: Need to adjust pointer value. */ /* NOTE: cagney/2005-01-02: THIS IS BOGUS. */ value_contents_writeable (val)[0] -= top; /* Note: When we look up RTTI entries, we don't get any - information on const or volatile attributes */ + information on const or volatile attributes. */ } type_print (type, "", stream, -1); fprintf_filtered (stream, ") "); @@ -695,26 +731,28 @@ c_value_print (struct value *val, struct ui_file *stream, if (options->objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS)) { - /* Attempt to determine real type of object */ + /* Attempt to determine real type of object. */ real_type = value_rtti_type (val, &full, &top, &using_enc); if (real_type) { - /* We have RTTI information, so use it */ - val = value_full_object (val, real_type, full, top, using_enc); + /* We have RTTI information, so use it. */ + val = value_full_object (val, real_type, + full, top, using_enc); fprintf_filtered (stream, "(%s%s) ", TYPE_NAME (real_type), full ? "" : _(" [incomplete object]")); - /* Print out object: enclosing type is same as real_type if full */ + /* Print out object: enclosing type is same as real_type if + full. */ return val_print (value_enclosing_type (val), value_contents_for_printing (val), 0, value_address (val), stream, 0, val, &opts, current_language); - /* Note: When we look up RTTI entries, we don't get any information on - const or volatile attributes */ + /* Note: When we look up RTTI entries, we don't get any + information on const or volatile attributes. */ } else if (type != check_typedef (value_enclosing_type (val))) { - /* No RTTI information, so let's do our best */ + /* No RTTI information, so let's do our best. */ fprintf_filtered (stream, "(%s ?) ", TYPE_NAME (value_enclosing_type (val))); return val_print (value_enclosing_type (val), @@ -722,7 +760,7 @@ c_value_print (struct value *val, struct ui_file *stream, value_address (val), stream, 0, val, &opts, current_language); } - /* Otherwise, we end up at the return outside this "if" */ + /* Otherwise, we end up at the return outside this "if". */ } return val_print (val_type, value_contents_for_printing (val), |