* [RFA] Remove cleanups from coff-pe-read.c
@ 2018-05-25 16:09 Tom Tromey
2018-05-25 16:54 ` Pedro Alves
0 siblings, 1 reply; 2+ messages in thread
From: Tom Tromey @ 2018-05-25 16:09 UTC (permalink / raw)
To: gdb-patches; +Cc: Tom Tromey
This removes cleanups from coff-pe-read.c, using std::string,
std::vector, and gdb::def_vector.
Tested by the buildbot, though I'm not sure these code paths are
exercised there.
ChangeLog
2018-05-25 Tom Tromey <tom@tromey.com>
* coff-pe-read.c (struct read_pe_section_data) <section_name>: Now
a std::string.
(get_pe_section_index, add_pe_exported_sym): Update.
(read_pe_exported_syms): Use gdb::def_vector.
---
gdb/ChangeLog | 7 +++++++
gdb/coff-pe-read.c | 43 ++++++++++++++-----------------------------
2 files changed, 21 insertions(+), 29 deletions(-)
diff --git a/gdb/coff-pe-read.c b/gdb/coff-pe-read.c
index 3f89977b13..0e9309e463 100644
--- a/gdb/coff-pe-read.c
+++ b/gdb/coff-pe-read.c
@@ -54,7 +54,7 @@ struct read_pe_section_data
enum minimal_symbol_type ms_type; /* Type to assign symbols in
section. */
unsigned int index; /* BFD section number. */
- const char *section_name; /* Recorded section name. */
+ std::string section_name; /* Recorded section name. */
};
#define IMAGE_SCN_CNT_CODE 0x20
@@ -106,7 +106,7 @@ get_pe_section_index (const char *section_name,
int i;
for (i = 0; i < nb_sections; i++)
- if (strcmp (sections[i].section_name, section_name) == 0)
+ if (sections[i].section_name == section_name)
return i;
return PE_SECTION_INDEX_INVALID;
}
@@ -175,7 +175,8 @@ add_pe_exported_sym (minimal_symbol_reader &reader,
if ((section_data->ms_type == mst_unknown) && debug_coff_pe_read)
fprintf_unfiltered (gdb_stdlog , _("Unknown section type for \"%s\""
" for entry \"%s\" in dll \"%s\"\n"),
- section_data->section_name, sym_name, dll_name);
+ section_data->section_name.c_str (), sym_name,
+ dll_name);
reader.record_with_info (qualified_name, vma, section_data->ms_type,
section_data->index);
@@ -349,16 +350,12 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
/* Array elements are for text, data and bss in that order
Initialization with RVA_START > RVA_END guarantees that
unused sections won't be matched. */
- struct read_pe_section_data *section_data;
struct pe_sections_info pe_sections_info;
- struct cleanup *back_to = make_cleanup (null_cleanup, 0);
-
char const *target = bfd_get_target (objfile->obfd);
- section_data = XCNEWVEC (struct read_pe_section_data, PE_SECTION_TABLE_SIZE);
-
- make_cleanup (free_current_contents, §ion_data);
+ std::vector<struct read_pe_section_data> section_data
+ (PE_SECTION_TABLE_SIZE);
for (i=0; i < PE_SECTION_TABLE_SIZE; i++)
{
@@ -384,7 +381,6 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
/* This is not a recognized PE format file. Abort now, because
the code is untested on anything else. *FIXME* test on
further architectures and loosen or remove this test. */
- do_cleanups (back_to);
return;
}
@@ -397,10 +393,7 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
num_entries = pe_get32 (dll, opthdr_ofs + 92);
if (num_entries < 1) /* No exports. */
- {
- do_cleanups (back_to);
- return;
- }
+ return;
if (is_pe64)
{
export_opthdrrva = pe_get32 (dll, opthdr_ofs + 112);
@@ -454,7 +447,6 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
if (export_size == 0)
{
/* Empty export table. */
- do_cleanups (back_to);
return;
}
@@ -490,13 +482,8 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
}
else
{
- char *name;
-
- section_data = XRESIZEVEC (struct read_pe_section_data, section_data,
- otherix + 1);
- name = xstrdup (sec_name);
- section_data[otherix].section_name = name;
- make_cleanup (xfree, name);
+ section_data.resize (otherix + 1);
+ section_data[otherix].section_name = sec_name;
section_data[otherix].rva_start = vaddr;
section_data[otherix].rva_end = vaddr + vsize;
section_data[otherix].vma_offset = 0;
@@ -513,8 +500,8 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
}
}
- expdata = (unsigned char *) xmalloc (export_size);
- make_cleanup (xfree, expdata);
+ gdb::def_vector<unsigned char> expdata_storage (export_size);
+ expdata = expdata_storage.data ();
bfd_seek (dll, (file_ptr) expptr, SEEK_SET);
bfd_bread (expdata, (bfd_size_type) export_size, dll);
@@ -530,7 +517,7 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
dll_name = (char *) (pe_as32 (expdata + 12) + erva);
pe_sections_info.nb_sections = otherix;
- pe_sections_info.sections = section_data;
+ pe_sections_info.sections = section_data.data ();
bfd_map_over_sections (dll, get_section_vmas, &pe_sections_info);
@@ -596,7 +583,7 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
section_found = 1;
add_pe_exported_sym (reader, sym_name, func_rva, ordinal,
- section_data + sectix, dll_name, objfile);
+ §ion_data[sectix], dll_name, objfile);
++nbnormal;
break;
}
@@ -608,7 +595,7 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
if (name_rva == 0)
{
add_pe_exported_sym (reader, NULL, func_rva, ordinal,
- section_data, dll_name, objfile);
+ §ion_data[0], dll_name, objfile);
++nbnormal;
}
else if (debug_coff_pe_read)
@@ -622,8 +609,6 @@ read_pe_exported_syms (minimal_symbol_reader &reader,
fprintf_unfiltered (gdb_stdlog, _("Finished reading \"%s\", exports %ld,"
" forwards %ld, total %ld/%ld.\n"), dll_name, nbnormal,
nbforward, nbnormal + nbforward, nexp);
- /* Discard expdata and section_data. */
- do_cleanups (back_to);
}
/* Extract from ABFD the offset of the .text section.
--
2.13.6
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2018-05-25 16:09 [RFA] Remove cleanups from coff-pe-read.c Tom Tromey
2018-05-25 16:54 ` Pedro Alves
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