* gdbarch.sh (function_list): Add new property bits_big_endian to
gdbarch structure.
* gdbarch.{c,h}: Regenerate.
* value.c (struct value): Replace BITS_BIG_ENDIAN by
gdbarch_bits_big_endian (comment).
(unpack_field_as_long, modify_field): Likewise.
* value.h: Likewise (comment).
* valops.c (value_slice): Likewise.
* valarith.c (value_subscript, value_bit_index): Likewise.
* gdbtypes.h (field): Likewise (comment).
* eval.c (evaluate_subexp_standard): Likewise.
* dwarf2read.c (dwarf2_add_field): Likewise.
* ada-lang.c (decode_packed_array, ada_value_primitive_packed_val)
(move_bits, ada_value_assign, value_assign_to_component): Likewise.
* defs.h (BITS_BIG_ENDIAN): Remove.
* gdbint.texinfo (Target Conditionals): Replace the description of
BITS_BIG_ENDIAN with a description of gdbarch_bits_big_endian.
This commit is contained in:
Markus Deuling
parent
1e5e79d0ce
commit
32c9a79572
15 changed files with 91 additions and 31 deletions
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@ -1,3 +1,23 @@
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2008-01-18 Markus Deuling <deuling@de.ibm.com>
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* gdbarch.sh (function_list): Add new property bits_big_endian to
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gdbarch structure.
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* gdbarch.{c,h}: Regenerate.
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* value.c (struct value): Replace BITS_BIG_ENDIAN by
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gdbarch_bits_big_endian (comment).
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(unpack_field_as_long, modify_field): Likewise.
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* value.h: Likewise (comment).
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* valops.c (value_slice): Likewise.
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* valarith.c (value_subscript, value_bit_index): Likewise.
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* gdbtypes.h (field): Likewise (comment).
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* eval.c (evaluate_subexp_standard): Likewise.
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* dwarf2read.c (dwarf2_add_field): Likewise.
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* ada-lang.c (decode_packed_array, ada_value_primitive_packed_val)
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(move_bits, ada_value_assign, value_assign_to_component): Likewise.
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* defs.h (BITS_BIG_ENDIAN): Remove.
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2008-01-18 Markus Deuling <deuling@de.ibm.com>
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* jv-exp.y (yylex): Replace DEPRECATED_STREQN with the appropriate
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@ -1875,7 +1875,8 @@ decode_packed_array (struct value *arr)
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return NULL;
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}
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if (BITS_BIG_ENDIAN && ada_is_modular_type (value_type (arr)))
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if (gdbarch_bits_big_endian (current_gdbarch)
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&& ada_is_modular_type (value_type (arr)))
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{
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/* This is a (right-justified) modular type representing a packed
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array with no wrapper. In order to interpret the value through
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@ -1998,7 +1999,7 @@ ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr,
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int len = (bit_size + bit_offset + HOST_CHAR_BIT - 1) / 8;
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/* Transmit bytes from least to most significant; delta is the direction
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the indices move. */
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int delta = BITS_BIG_ENDIAN ? -1 : 1;
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int delta = gdbarch_bits_big_endian (current_gdbarch) ? -1 : 1;
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type = ada_check_typedef (type);
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@ -2047,7 +2048,7 @@ ada_value_primitive_packed_val (struct value *obj, const gdb_byte *valaddr,
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memset (unpacked, 0, TYPE_LENGTH (type));
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return v;
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}
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else if (BITS_BIG_ENDIAN)
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else if (gdbarch_bits_big_endian (current_gdbarch))
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{
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src = len - 1;
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if (has_negatives (type)
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@ -2141,7 +2142,7 @@ move_bits (gdb_byte *target, int targ_offset, const gdb_byte *source,
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targ_offset %= HOST_CHAR_BIT;
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source += src_offset / HOST_CHAR_BIT;
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src_offset %= HOST_CHAR_BIT;
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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{
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accum = (unsigned char) *source;
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source += 1;
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@ -2229,7 +2230,7 @@ ada_value_assign (struct value *toval, struct value *fromval)
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fromval = value_cast (type, fromval);
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read_memory (to_addr, buffer, len);
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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move_bits (buffer, value_bitpos (toval),
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value_contents (fromval),
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TYPE_LENGTH (value_type (fromval)) * TARGET_CHAR_BIT -
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@ -2276,7 +2277,7 @@ value_assign_to_component (struct value *container, struct value *component,
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else
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bits = value_bitsize (component);
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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move_bits (value_contents_writeable (container) + offset_in_container,
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value_bitpos (container) + bit_offset_in_container,
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value_contents (val),
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@ -1011,14 +1011,6 @@ enum { MAX_REGISTER_SIZE = 16 };
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#define HOST_CHAR_BIT TARGET_CHAR_BIT
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#endif
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/* The bit byte-order has to do just with numbering of bits in
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debugging symbols and such. Conceptually, it's quite separate
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from byte/word byte order. */
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#if !defined (BITS_BIG_ENDIAN)
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#define BITS_BIG_ENDIAN (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG)
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#endif
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/* In findvar.c. */
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extern LONGEST extract_signed_integer (const gdb_byte *, int);
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@ -1,3 +1,8 @@
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2008-01-18 Markus Deuling <deuling@de.ibm.com>
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* gdbint.texinfo (Target Conditionals): Replace the description of
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BITS_BIG_ENDIAN with a description of gdbarch_bits_big_endian.
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2008-01-12 Paul Hilfinger <hilfinger@adacore.com>
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* gdb.texinfo (C Operators): Remove incorrect parenthetical comment
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@ -3344,12 +3344,18 @@ Used to notify if the compiler promotes a @code{short} or @code{char}
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parameter to an @code{int}, but still reports the parameter as its
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original type, rather than the promoted type.
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@item BITS_BIG_ENDIAN
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@findex BITS_BIG_ENDIAN
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Define this if the numbering of bits in the targets does @strong{not} match the
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endianness of the target byte order. A value of 1 means that the bits
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@item gdbarch_bits_big_endian (@var{gdbarch})
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@findex gdbarch_bits_big_endian
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This is used if the numbering of bits in the targets does @strong{not} match
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the endianness of the target byte order. A value of 1 means that the bits
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are numbered in a big-endian bit order, 0 means little-endian.
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@item set_gdbarch_bits_big_endian (@var{gdbarch}, @var{bits_big_endian})
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@findex set_gdbarch_bits_big_endian
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Calling set_gdbarch_bits_big_endian with a value of 1 indicates that the
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bits in the target are numbered in a big-endian bit order, 0 indicates
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little-endian.
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@item BREAKPOINT
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@findex BREAKPOINT
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This is the character array initializer for the bit pattern to put into
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@ -3502,7 +3502,7 @@ dwarf2_add_field (struct field_info *fip, struct die_info *die,
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attr = dwarf2_attr (die, DW_AT_bit_offset, cu);
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if (attr)
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{
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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{
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/* For big endian bits, the DW_AT_bit_offset gives the
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additional bit offset from the MSB of the containing
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@ -686,7 +686,7 @@ evaluate_subexp_standard (struct type *expect_type,
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for (; range_low <= range_high; range_low++)
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{
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int bit_index = (unsigned) range_low % TARGET_CHAR_BIT;
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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bit_index = TARGET_CHAR_BIT - 1 - bit_index;
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valaddr[(unsigned) range_low / TARGET_CHAR_BIT]
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|= 1 << bit_index;
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@ -130,6 +130,7 @@ struct gdbarch
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*/
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int bits_big_endian;
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int short_bit;
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int int_bit;
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int long_bit;
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@ -251,6 +252,7 @@ struct gdbarch startup_gdbarch =
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/*per-architecture data-pointers and swap regions */
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0, NULL, NULL,
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/* Multi-arch values */
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1, /* bits_big_endian */
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8 * sizeof (short), /* short_bit */
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8 * sizeof (int), /* int_bit */
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8 * sizeof (long), /* long_bit */
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@ -382,6 +384,7 @@ gdbarch_alloc (const struct gdbarch_info *info,
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gdbarch->target_desc = info->target_desc;
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/* Force the explicit initialization of these. */
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gdbarch->bits_big_endian = (gdbarch->byte_order == BFD_ENDIAN_BIG);
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gdbarch->short_bit = 2*TARGET_CHAR_BIT;
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gdbarch->int_bit = 4*TARGET_CHAR_BIT;
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gdbarch->long_bit = 4*TARGET_CHAR_BIT;
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@ -480,6 +483,7 @@ verify_gdbarch (struct gdbarch *gdbarch)
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if (gdbarch->bfd_arch_info == NULL)
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fprintf_unfiltered (log, "\n\tbfd_arch_info");
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/* Check those that need to be defined for the given multi-arch level. */
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/* Skip verify of bits_big_endian, invalid_p == 0 */
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/* Skip verify of short_bit, invalid_p == 0 */
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/* Skip verify of int_bit, invalid_p == 0 */
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/* Skip verify of long_bit, invalid_p == 0 */
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@ -647,6 +651,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
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fprintf_unfiltered (file,
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"gdbarch_dump: bfd_arch_info = %s\n",
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gdbarch_bfd_arch_info (gdbarch)->printable_name);
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fprintf_unfiltered (file,
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"gdbarch_dump: bits_big_endian = %s\n",
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paddr_d (gdbarch->bits_big_endian));
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fprintf_unfiltered (file,
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"gdbarch_dump: breakpoint_from_pc = <0x%lx>\n",
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(long) gdbarch->breakpoint_from_pc);
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@ -1059,6 +1066,23 @@ gdbarch_target_desc (struct gdbarch *gdbarch)
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return gdbarch->target_desc;
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}
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int
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gdbarch_bits_big_endian (struct gdbarch *gdbarch)
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{
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gdb_assert (gdbarch != NULL);
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/* Skip verify of bits_big_endian, invalid_p == 0 */
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if (gdbarch_debug >= 2)
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fprintf_unfiltered (gdb_stdlog, "gdbarch_bits_big_endian called\n");
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return gdbarch->bits_big_endian;
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}
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void
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set_gdbarch_bits_big_endian (struct gdbarch *gdbarch,
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int bits_big_endian)
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{
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gdbarch->bits_big_endian = bits_big_endian;
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}
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int
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gdbarch_short_bit (struct gdbarch *gdbarch)
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{
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@ -71,6 +71,12 @@ extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
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/* The following are initialized by the target dependent code. */
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/* The bit byte-order has to do just with numbering of bits in debugging symbols
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and such. Conceptually, it's quite separate from byte/word byte order. */
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extern int gdbarch_bits_big_endian (struct gdbarch *gdbarch);
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extern void set_gdbarch_bits_big_endian (struct gdbarch *gdbarch, int bits_big_endian);
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/* Number of bits in a char or unsigned char for the target machine.
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Just like CHAR_BIT in <limits.h> but describes the target machine.
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v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
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@ -343,6 +343,11 @@ i:int:byte_order:::BFD_ENDIAN_BIG
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i:enum gdb_osabi:osabi:::GDB_OSABI_UNKNOWN
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#
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i:const struct target_desc *:target_desc:::::::paddr_d ((long) gdbarch->target_desc)
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# The bit byte-order has to do just with numbering of bits in debugging symbols
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# and such. Conceptually, it's quite separate from byte/word byte order.
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v:int:bits_big_endian:::1:(gdbarch->byte_order == BFD_ENDIAN_BIG)::0
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# Number of bits in a char or unsigned char for the target machine.
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# Just like CHAR_BIT in <limits.h> but describes the target machine.
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# v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
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@ -403,8 +403,8 @@ struct main_type
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{
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/* Position of this field, counting in bits from start of
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containing structure.
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For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
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For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB.
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For gdbarch_bits_big_endian=1 targets, it is the bit offset to the MSB.
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For gdbarch_bits_big_endian=0 targets, it is the bit offset to the LSB.
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For a range bound or enum value, this is the value itself. */
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int bitpos;
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@ -230,7 +230,8 @@ value_subscript (struct value *array, struct value *idx)
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offset = index / TARGET_CHAR_BIT;
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byte = *((char *) value_contents (array) + offset);
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bit_index = index % TARGET_CHAR_BIT;
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byte >>= (BITS_BIG_ENDIAN ? TARGET_CHAR_BIT - 1 - bit_index : bit_index);
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byte >>= (gdbarch_bits_big_endian (current_gdbarch) ?
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TARGET_CHAR_BIT - 1 - bit_index : bit_index);
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v = value_from_longest (LA_BOOL_TYPE, byte & 1);
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set_value_bitpos (v, bit_index);
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set_value_bitsize (v, 1);
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@ -1575,7 +1576,7 @@ value_bit_index (struct type *type, const gdb_byte *valaddr, int index)
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word = unpack_long (builtin_type_unsigned_char,
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valaddr + (rel_index / TARGET_CHAR_BIT));
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rel_index %= TARGET_CHAR_BIT;
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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rel_index = TARGET_CHAR_BIT - 1 - rel_index;
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return (word >> rel_index) & 1;
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}
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@ -2743,7 +2743,7 @@ value_slice (struct value *array, int lowbound, int length)
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else if (element > 0)
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{
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int j = i % TARGET_CHAR_BIT;
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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j = TARGET_CHAR_BIT - 1 - j;
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value_contents_raw (slice)[i / TARGET_CHAR_BIT] |= (1 << j);
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}
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@ -72,8 +72,8 @@ struct value
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int bitsize;
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/* Only used for bitfields; position of start of field. For
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BITS_BIG_ENDIAN=0 targets, it is the position of the LSB. For
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BITS_BIG_ENDIAN=1 targets, it is the position of the MSB. */
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gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
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gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
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int bitpos;
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/* Frame register value is relative to. This will be described in
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@ -1481,7 +1481,7 @@ unpack_field_as_long (struct type *type, const gdb_byte *valaddr, int fieldno)
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/* Extract bits. See comment above. */
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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lsbcount = (sizeof val * 8 - bitpos % 8 - bitsize);
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else
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lsbcount = (bitpos % 8);
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@ -1537,7 +1537,7 @@ modify_field (gdb_byte *addr, LONGEST fieldval, int bitpos, int bitsize)
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oword = extract_unsigned_integer (addr, sizeof oword);
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/* Shifting for bit field depends on endianness of the target machine. */
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if (BITS_BIG_ENDIAN)
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if (gdbarch_bits_big_endian (current_gdbarch))
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bitpos = sizeof (oword) * 8 - bitpos - bitsize;
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oword &= ~(mask << bitpos);
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@ -62,8 +62,8 @@ extern int value_bitsize (struct value *);
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extern void set_value_bitsize (struct value *, int bit);
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/* Only used for bitfields; position of start of field. For
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BITS_BIG_ENDIAN=0 targets, it is the position of the LSB. For
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BITS_BIG_ENDIAN=1 targets, it is the position of the MSB. */
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gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
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gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
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extern int value_bitpos (struct value *);
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extern void set_value_bitpos (struct value *, int bit);
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Loading…
Add table
Reference in a new issue