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6eb63917ce
When I changed the Rust parser to handle 128-bit ints, this inadvertently broke some other gdb commands. For example, "info symbol 0xffffffffffffffff" now fails, because the resulting value is 128 bits, but this is rejected by extract_integer. This patch fixes the problem by changing extract_integer to allow over-long integers as long as the high bytes are either 0, or (for signed types) 0xff. Regression tested on x86-64 Fedora 38. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31565 Approved-By: Andrew Burgess <aburgess@redhat.com>
111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
/* Copyright (C) 1986-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_EXTRACT_STORE_INTEGER_H
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#define GDB_EXTRACT_STORE_INTEGER_H
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#include <type_traits>
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template<typename T, typename = std::is_integral<T>>
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T extract_integer (gdb::array_view<const gdb_byte>, enum bfd_endian byte_order);
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static inline LONGEST
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extract_signed_integer (gdb::array_view<const gdb_byte> buf,
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enum bfd_endian byte_order)
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{
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return extract_integer<LONGEST> (buf, byte_order);
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}
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static inline LONGEST
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extract_signed_integer (const gdb_byte *addr, int len,
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enum bfd_endian byte_order)
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{
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return extract_signed_integer (gdb::array_view<const gdb_byte> (addr, len),
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byte_order);
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}
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static inline ULONGEST
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extract_unsigned_integer (gdb::array_view<const gdb_byte> buf,
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enum bfd_endian byte_order)
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{
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return extract_integer<ULONGEST> (buf, byte_order);
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}
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static inline ULONGEST
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extract_unsigned_integer (const gdb_byte *addr, int len,
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enum bfd_endian byte_order)
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{
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return extract_unsigned_integer (gdb::array_view<const gdb_byte> (addr, len),
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byte_order);
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}
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extern CORE_ADDR extract_typed_address (const gdb_byte *buf,
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struct type *type);
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/* All 'store' functions accept a host-format integer and store a
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target-format integer at ADDR which is LEN bytes long. */
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template<typename T, typename = RequireLongest<T>>
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extern void store_integer (gdb::array_view<gdb_byte> dst,
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bfd_endian byte_order, T val);
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template<typename T>
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static inline void
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store_integer (gdb_byte *addr, int len, bfd_endian byte_order, T val)
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{
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return store_integer (gdb::make_array_view (addr, len), byte_order, val);
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}
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static inline void
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store_signed_integer (gdb::array_view<gdb_byte> dst, bfd_endian byte_order,
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LONGEST val)
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{
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return store_integer (dst, byte_order, val);
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}
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static inline void
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store_signed_integer (gdb_byte *addr, int len, bfd_endian byte_order,
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LONGEST val)
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{
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return store_signed_integer (gdb::make_array_view (addr, len), byte_order,
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val);
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}
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static inline void
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store_unsigned_integer (gdb::array_view<gdb_byte> dst, bfd_endian byte_order,
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ULONGEST val)
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{
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return store_integer (dst, byte_order, val);
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}
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static inline void
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store_unsigned_integer (gdb_byte *addr, int len, bfd_endian byte_order,
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ULONGEST val)
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{
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return store_unsigned_integer (gdb::make_array_view (addr, len), byte_order,
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val);
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}
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extern void store_typed_address (gdb_byte *buf, struct type *type,
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CORE_ADDR addr);
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extern void copy_integer_to_size (gdb_byte *dest, int dest_size,
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const gdb_byte *source, int source_size,
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bool is_signed, enum bfd_endian byte_order);
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#endif /* GDB_EXTRACT_STORE_INTEGER_H */
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