diff options
| -rw-r--r-- | gdb/ChangeLog | 14 | ||||
| -rw-r--r-- | gdb/cli/cli-dump.c | 11 | ||||
| -rw-r--r-- | gdb/cp-valprint.c | 12 | ||||
| -rw-r--r-- | gdb/elfread.c | 24 | ||||
| -rw-r--r-- | gdb/gcore.c | 13 | ||||
| -rw-r--r-- | gdb/mi/mi-main.c | 11 | ||||
| -rw-r--r-- | gdb/printcmd.c | 10 | ||||
| -rw-r--r-- | gdb/target.c | 37 | ||||
| -rw-r--r-- | gdb/valarith.c | 28 | ||||
| -rw-r--r-- | gdb/valops.c | 11 |
10 files changed, 63 insertions, 108 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 56fc661..59556b4 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,19 @@ 2017-08-03 Tom Tromey <tom@tromey.com> + * valops.c (search_struct_method): Use gdb::byte_vector. + * valarith.c (value_concat): Use std::vector. + * target.c (memory_xfer_partial): Use gdb::byte_vector. + (simple_search_memory): Likewise. + * printcmd.c (find_string_backward): Use gdb::byte_vector. + * mi/mi-main.c (mi_cmd_data_write_memory): Use gdb::byte_vector. + * gcore.c (gcore_copy_callback): Use gdb::byte_vector. + * elfread.c (elf_rel_plt_read): Use std::string. + * cp-valprint.c (cp_print_value): Use gdb::byte_vector. + * cli/cli-dump.c (restore_section_callback): Use + gdb::byte_vector. + +2017-08-03 Tom Tromey <tom@tromey.com> + * jit.c (jit_reader_load_command): Use unique_xmalloc_ptr. 2017-08-03 Tom Tromey <tom@tromey.com> diff --git a/gdb/cli/cli-dump.c b/gdb/cli/cli-dump.c index 3d8d386..6d55a02 100644 --- a/gdb/cli/cli-dump.c +++ b/gdb/cli/cli-dump.c @@ -434,8 +434,6 @@ restore_section_callback (bfd *ibfd, asection *isec, void *args) bfd_vma sec_end = sec_start + size; bfd_size_type sec_offset = 0; bfd_size_type sec_load_count = size; - struct cleanup *old_chain; - gdb_byte *buf; int ret; /* Ignore non-loadable sections, eg. from elf files. */ @@ -463,9 +461,8 @@ restore_section_callback (bfd *ibfd, asection *isec, void *args) sec_load_count -= sec_end - data->load_end; /* Get the data. */ - buf = (gdb_byte *) xmalloc (size); - old_chain = make_cleanup (xfree, buf); - if (!bfd_get_section_contents (ibfd, isec, buf, 0, size)) + gdb::byte_vector buf (size); + if (!bfd_get_section_contents (ibfd, isec, buf.data (), 0, size)) error (_("Failed to read bfd file %s: '%s'."), bfd_get_filename (ibfd), bfd_errmsg (bfd_get_error ())); @@ -487,11 +484,9 @@ restore_section_callback (bfd *ibfd, asection *isec, void *args) /* Write the data. */ ret = target_write_memory (sec_start + sec_offset + data->load_offset, - buf + sec_offset, sec_load_count); + &buf[sec_offset], sec_load_count); if (ret != 0) warning (_("restore: memory write failed (%s)."), safe_strerror (ret)); - do_cleanups (old_chain); - return; } static void diff --git a/gdb/cp-valprint.c b/gdb/cp-valprint.c index 73fe03d..af70421 100644 --- a/gdb/cp-valprint.c +++ b/gdb/cp-valprint.c @@ -35,6 +35,7 @@ #include "language.h" #include "extension.h" #include "typeprint.h" +#include "byte-vector.h" /* Controls printing of vtbl's. */ static void @@ -534,23 +535,18 @@ cp_print_value (struct type *type, struct type *real_type, if ((boffset + offset) < 0 || (boffset + offset) >= TYPE_LENGTH (real_type)) { - gdb_byte *buf; - struct cleanup *back_to; + gdb::byte_vector buf (TYPE_LENGTH (baseclass)); - buf = (gdb_byte *) xmalloc (TYPE_LENGTH (baseclass)); - back_to = make_cleanup (xfree, buf); - - if (target_read_memory (address + boffset, buf, + if (target_read_memory (address + boffset, buf.data (), TYPE_LENGTH (baseclass)) != 0) skip = 1; base_val = value_from_contents_and_address (baseclass, - buf, + buf.data (), address + boffset); baseclass = value_type (base_val); thisoffset = 0; boffset = 0; thistype = baseclass; - do_cleanups (back_to); } else { diff --git a/gdb/elfread.c b/gdb/elfread.c index fba2026..ece704c 100644 --- a/gdb/elfread.c +++ b/gdb/elfread.c @@ -540,9 +540,6 @@ elf_rel_plt_read (minimal_symbol_reader &reader, asection *plt, *relplt, *got_plt; int plt_elf_idx; bfd_size_type reloc_count, reloc; - char *string_buffer = NULL; - size_t string_buffer_size = 0; - struct cleanup *back_to; struct gdbarch *gdbarch = get_objfile_arch (objfile); struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; size_t ptr_size = TYPE_LENGTH (ptr_type); @@ -576,7 +573,7 @@ elf_rel_plt_read (minimal_symbol_reader &reader, if (! bed->s->slurp_reloc_table (obfd, relplt, dyn_symbol_table, TRUE)) return; - back_to = make_cleanup (free_current_contents, &string_buffer); + std::string string_buffer; reloc_count = relplt->size / elf_section_data (relplt)->this_hdr.sh_entsize; for (reloc = 0; reloc < reloc_count; reloc++) @@ -584,11 +581,10 @@ elf_rel_plt_read (minimal_symbol_reader &reader, const char *name; struct minimal_symbol *msym; CORE_ADDR address; + const char *got_suffix = SYMBOL_GOT_PLT_SUFFIX; const size_t got_suffix_len = strlen (SYMBOL_GOT_PLT_SUFFIX); - size_t name_len; name = bfd_asymbol_name (*relplt->relocation[reloc].sym_ptr_ptr); - name_len = strlen (name); address = relplt->relocation[reloc].address; /* Does the pointer reside in the .got.plt section? */ @@ -601,24 +597,16 @@ elf_rel_plt_read (minimal_symbol_reader &reader, OBJFILE the symbol is undefined and the objfile having NAME defined may not yet have been loaded. */ - if (string_buffer_size < name_len + got_suffix_len + 1) - { - string_buffer_size = 2 * (name_len + got_suffix_len); - string_buffer = (char *) xrealloc (string_buffer, string_buffer_size); - } - memcpy (string_buffer, name, name_len); - memcpy (&string_buffer[name_len], SYMBOL_GOT_PLT_SUFFIX, - got_suffix_len + 1); + string_buffer.assign (name); + string_buffer.append (got_suffix, got_suffix + got_suffix_len); - msym = record_minimal_symbol (reader, string_buffer, - name_len + got_suffix_len, + msym = record_minimal_symbol (reader, string_buffer.c_str (), + string_buffer.size (), true, address, mst_slot_got_plt, got_plt, objfile); if (msym) SET_MSYMBOL_SIZE (msym, ptr_size); } - - do_cleanups (back_to); } /* The data pointer is htab_t for gnu_ifunc_record_cache_unchecked. */ diff --git a/gdb/gcore.c b/gdb/gcore.c index c32d2ff..50aff2c 100644 --- a/gdb/gcore.c +++ b/gdb/gcore.c @@ -36,6 +36,7 @@ #include "readline/tilde.h" #include <algorithm> #include "common/gdb_unlinker.h" +#include "byte-vector.h" /* The largest amount of memory to read from the target at once. We must throttle it to limit the amount of memory used by GDB during @@ -548,8 +549,6 @@ gcore_copy_callback (bfd *obfd, asection *osec, void *ignored) { bfd_size_type size, total_size = bfd_section_size (obfd, osec); file_ptr offset = 0; - struct cleanup *old_chain = NULL; - gdb_byte *memhunk; /* Read-only sections are marked; we don't have to copy their contents. */ if ((bfd_get_section_flags (obfd, osec) & SEC_LOAD) == 0) @@ -560,8 +559,7 @@ gcore_copy_callback (bfd *obfd, asection *osec, void *ignored) return; size = std::min (total_size, (bfd_size_type) MAX_COPY_BYTES); - memhunk = (gdb_byte *) xmalloc (size); - old_chain = make_cleanup (xfree, memhunk); + gdb::byte_vector memhunk (size); while (total_size > 0) { @@ -569,7 +567,7 @@ gcore_copy_callback (bfd *obfd, asection *osec, void *ignored) size = total_size; if (target_read_memory (bfd_section_vma (obfd, osec) + offset, - memhunk, size) != 0) + memhunk.data (), size) != 0) { warning (_("Memory read failed for corefile " "section, %s bytes at %s."), @@ -577,7 +575,8 @@ gcore_copy_callback (bfd *obfd, asection *osec, void *ignored) paddress (target_gdbarch (), bfd_section_vma (obfd, osec))); break; } - if (!bfd_set_section_contents (obfd, osec, memhunk, offset, size)) + if (!bfd_set_section_contents (obfd, osec, memhunk.data (), + offset, size)) { warning (_("Failed to write corefile contents (%s)."), bfd_errmsg (bfd_get_error ())); @@ -587,8 +586,6 @@ gcore_copy_callback (bfd *obfd, asection *osec, void *ignored) total_size -= size; offset += size; } - - do_cleanups (old_chain); /* Frees MEMHUNK. */ } static int diff --git a/gdb/mi/mi-main.c b/gdb/mi/mi-main.c index a4c6ec9..0bf587f 100644 --- a/gdb/mi/mi-main.c +++ b/gdb/mi/mi-main.c @@ -1659,8 +1659,6 @@ mi_cmd_data_write_memory (const char *command, char **argv, int argc) /* FIXME: ezannoni 2000-02-17 LONGEST could possibly not be big enough when using a compiler other than GCC. */ LONGEST value; - gdb_byte *buffer; - struct cleanup *old_chain; long offset = 0; int oind = 0; char *oarg; @@ -1707,13 +1705,10 @@ mi_cmd_data_write_memory (const char *command, char **argv, int argc) /* Get the value as a number. */ value = parse_and_eval_address (argv[3]); /* Get the value into an array. */ - buffer = (gdb_byte *) xmalloc (word_size); - old_chain = make_cleanup (xfree, buffer); - store_signed_integer (buffer, word_size, byte_order, value); + gdb::byte_vector buffer (word_size); + store_signed_integer (buffer.data (), word_size, byte_order, value); /* Write it down to memory. */ - write_memory_with_notification (addr, buffer, word_size); - /* Free the buffer. */ - do_cleanups (old_chain); + write_memory_with_notification (addr, buffer.data (), word_size); } /* Implementation of the -data-write-memory-bytes command. diff --git a/gdb/printcmd.c b/gdb/printcmd.c index a8cc052..d5c83f0 100644 --- a/gdb/printcmd.c +++ b/gdb/printcmd.c @@ -898,8 +898,6 @@ find_string_backward (struct gdbarch *gdbarch, int *strings_counted) { const int chunk_size = 0x20; - gdb_byte *buffer = NULL; - struct cleanup *cleanup = NULL; int read_error = 0; int chars_read = 0; int chars_to_read = chunk_size; @@ -908,14 +906,13 @@ find_string_backward (struct gdbarch *gdbarch, CORE_ADDR string_start_addr = addr; gdb_assert (char_size == 1 || char_size == 2 || char_size == 4); - buffer = (gdb_byte *) xmalloc (chars_to_read * char_size); - cleanup = make_cleanup (xfree, buffer); + gdb::byte_vector buffer (chars_to_read * char_size); while (count > 0 && read_error == 0) { int i; addr -= chars_to_read * char_size; - chars_read = read_memory_backward (gdbarch, addr, buffer, + chars_read = read_memory_backward (gdbarch, addr, buffer.data (), chars_to_read * char_size); chars_read /= char_size; read_error = (chars_read == chars_to_read) ? 0 : 1; @@ -924,7 +921,7 @@ find_string_backward (struct gdbarch *gdbarch, { int offset = (chars_to_read - i - 1) * char_size; - if (integer_is_zero (buffer + offset, char_size) + if (integer_is_zero (&buffer[offset], char_size) || chars_counted == options->print_max) { /* Found '\0' or reached print_max. As OFFSET is the offset to @@ -947,7 +944,6 @@ find_string_backward (struct gdbarch *gdbarch, string_start_addr -= chars_counted * char_size; } - do_cleanups (cleanup); return string_start_addr; } diff --git a/gdb/target.c b/gdb/target.c index e526bcc..9b63ab7 100644 --- a/gdb/target.c +++ b/gdb/target.c @@ -46,6 +46,7 @@ #include "top.h" #include "event-top.h" #include <algorithm> +#include "byte-vector.h" static void target_info (char *, int); @@ -1284,9 +1285,6 @@ memory_xfer_partial (struct target_ops *ops, enum target_object object, } else { - gdb_byte *buf; - struct cleanup *old_chain; - /* A large write request is likely to be partially satisfied by memory_xfer_partial_1. We will continually malloc and free a copy of the entire write request for breakpoint @@ -1295,15 +1293,10 @@ memory_xfer_partial (struct target_ops *ops, enum target_object object, to mitigate this. */ len = std::min (ops->to_get_memory_xfer_limit (ops), len); - buf = (gdb_byte *) xmalloc (len); - old_chain = make_cleanup (xfree, buf); - memcpy (buf, writebuf, len); - - breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); - res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, + gdb::byte_vector buf (writebuf, writebuf + len); + breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); + res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, xfered_len); - - do_cleanups (old_chain); } return res; @@ -2439,9 +2432,7 @@ simple_search_memory (struct target_ops *ops, #define SEARCH_CHUNK_SIZE 16000 const unsigned chunk_size = SEARCH_CHUNK_SIZE; /* Buffer to hold memory contents for searching. */ - gdb_byte *search_buf; unsigned search_buf_size; - struct cleanup *old_cleanups; search_buf_size = chunk_size + pattern_len - 1; @@ -2449,20 +2440,17 @@ simple_search_memory (struct target_ops *ops, if (search_space_len < search_buf_size) search_buf_size = search_space_len; - search_buf = (gdb_byte *) malloc (search_buf_size); - if (search_buf == NULL) - error (_("Unable to allocate memory to perform the search.")); - old_cleanups = make_cleanup (free_current_contents, &search_buf); + gdb::byte_vector search_buf (search_buf_size); /* Prime the search buffer. */ if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, - search_buf, start_addr, search_buf_size) != search_buf_size) + search_buf.data (), start_addr, search_buf_size) + != search_buf_size) { warning (_("Unable to access %s bytes of target " "memory at %s, halting search."), pulongest (search_buf_size), hex_string (start_addr)); - do_cleanups (old_cleanups); return -1; } @@ -2478,15 +2466,14 @@ simple_search_memory (struct target_ops *ops, unsigned nr_search_bytes = std::min (search_space_len, (ULONGEST) search_buf_size); - found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, + found_ptr = (gdb_byte *) memmem (search_buf.data (), nr_search_bytes, pattern, pattern_len); if (found_ptr != NULL) { - CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); + CORE_ADDR found_addr = start_addr + (found_ptr - search_buf.data ()); *found_addrp = found_addr; - do_cleanups (old_cleanups); return 1; } @@ -2507,20 +2494,19 @@ simple_search_memory (struct target_ops *ops, /* Copy the trailing part of the previous iteration to the front of the buffer for the next iteration. */ gdb_assert (keep_len == pattern_len - 1); - memcpy (search_buf, search_buf + chunk_size, keep_len); + memcpy (&search_buf[0], &search_buf[chunk_size], keep_len); nr_to_read = std::min (search_space_len - keep_len, (ULONGEST) chunk_size); if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, - search_buf + keep_len, read_addr, + &search_buf[keep_len], read_addr, nr_to_read) != nr_to_read) { warning (_("Unable to access %s bytes of target " "memory at %s, halting search."), plongest (nr_to_read), hex_string (read_addr)); - do_cleanups (old_cleanups); return -1; } @@ -2530,7 +2516,6 @@ simple_search_memory (struct target_ops *ops, /* Not found. */ - do_cleanups (old_cleanups); return 0; } diff --git a/gdb/valarith.c b/gdb/valarith.c index 985233c..9724aca 100644 --- a/gdb/valarith.c +++ b/gdb/valarith.c @@ -697,12 +697,9 @@ value_concat (struct value *arg1, struct value *arg2) if (TYPE_CODE (type2) == TYPE_CODE_STRING || TYPE_CODE (type2) == TYPE_CODE_CHAR) { - struct cleanup *back_to; - count = longest_to_int (value_as_long (inval1)); inval2len = TYPE_LENGTH (type2); - ptr = (char *) xmalloc (count * inval2len); - back_to = make_cleanup (xfree, ptr); + std::vector<char> ptr (count * inval2len); if (TYPE_CODE (type2) == TYPE_CODE_CHAR) { char_type = type2; @@ -711,7 +708,7 @@ value_concat (struct value *arg1, struct value *arg2) value_contents (inval2)); for (idx = 0; idx < count; idx++) { - *(ptr + idx) = inchar; + ptr[idx] = inchar; } } else @@ -720,12 +717,11 @@ value_concat (struct value *arg1, struct value *arg2) for (idx = 0; idx < count; idx++) { - memcpy (ptr + (idx * inval2len), value_contents (inval2), + memcpy (&ptr[idx * inval2len], value_contents (inval2), inval2len); } } - outval = value_string (ptr, count * inval2len, char_type); - do_cleanups (back_to); + outval = value_string (ptr.data (), count * inval2len, char_type); } else if (TYPE_CODE (type2) == TYPE_CODE_BOOL) { @@ -739,8 +735,6 @@ value_concat (struct value *arg1, struct value *arg2) else if (TYPE_CODE (type1) == TYPE_CODE_STRING || TYPE_CODE (type1) == TYPE_CODE_CHAR) { - struct cleanup *back_to; - /* We have two character strings to concatenate. */ if (TYPE_CODE (type2) != TYPE_CODE_STRING && TYPE_CODE (type2) != TYPE_CODE_CHAR) @@ -749,31 +743,29 @@ value_concat (struct value *arg1, struct value *arg2) } inval1len = TYPE_LENGTH (type1); inval2len = TYPE_LENGTH (type2); - ptr = (char *) xmalloc (inval1len + inval2len); - back_to = make_cleanup (xfree, ptr); + std::vector<char> ptr (inval1len + inval2len); if (TYPE_CODE (type1) == TYPE_CODE_CHAR) { char_type = type1; - *ptr = (char) unpack_long (type1, value_contents (inval1)); + ptr[0] = (char) unpack_long (type1, value_contents (inval1)); } else { char_type = TYPE_TARGET_TYPE (type1); - memcpy (ptr, value_contents (inval1), inval1len); + memcpy (ptr.data (), value_contents (inval1), inval1len); } if (TYPE_CODE (type2) == TYPE_CODE_CHAR) { - *(ptr + inval1len) = + ptr[inval1len] = (char) unpack_long (type2, value_contents (inval2)); } else { - memcpy (ptr + inval1len, value_contents (inval2), inval2len); + memcpy (&ptr[inval1len], value_contents (inval2), inval2len); } - outval = value_string (ptr, inval1len + inval2len, char_type); - do_cleanups (back_to); + outval = value_string (ptr.data (), inval1len + inval2len, char_type); } else if (TYPE_CODE (type1) == TYPE_CODE_BOOL) { diff --git a/gdb/valops.c b/gdb/valops.c index 8675e6c..3668f0b 100644 --- a/gdb/valops.c +++ b/gdb/valops.c @@ -39,6 +39,7 @@ #include "observer.h" #include "objfiles.h" #include "extension.h" +#include "byte-vector.h" extern unsigned int overload_debug; /* Local functions. */ @@ -2076,24 +2077,20 @@ search_struct_method (const char *name, struct value **arg1p, if (offset < 0 || offset >= TYPE_LENGTH (type)) { - gdb_byte *tmp; - struct cleanup *back_to; CORE_ADDR address; - tmp = (gdb_byte *) xmalloc (TYPE_LENGTH (baseclass)); - back_to = make_cleanup (xfree, tmp); + gdb::byte_vector tmp (TYPE_LENGTH (baseclass)); address = value_address (*arg1p); if (target_read_memory (address + offset, - tmp, TYPE_LENGTH (baseclass)) != 0) + tmp.data (), TYPE_LENGTH (baseclass)) != 0) error (_("virtual baseclass botch")); base_val = value_from_contents_and_address (baseclass, - tmp, + tmp.data (), address + offset); base_valaddr = value_contents_for_printing (base_val); this_offset = 0; - do_cleanups (back_to); } else { |