const char *
lto_get_section_data (struct lto_file_decl_data *file_data,
enum lto_section_type section_type,
const char *name,
size_t *len, bool decompress)
{
const char *data = (get_section_f) (file_data, section_type, name, len);
const size_t header_length = sizeof (struct lto_data_header);
struct lto_data_header *header;
struct lto_buffer buffer;
struct lto_compression_stream *stream;
lto_stats.section_size[section_type] += *len;
if (data == NULL)
return NULL;
/* WPA->ltrans streams are not compressed with exception of function bodies
and variable initializers that has been verbatim copied from earlier
compilations. */
if (!flag_ltrans || decompress)
{
/* Create a mapping header containing the underlying data and length,
and prepend this to the uncompression buffer. The uncompressed data
then follows, and a pointer to the start of the uncompressed data is
returned. */
header = (struct lto_data_header *) xmalloc (header_length);
header->data = data;
header->len = *len;
buffer.data = (char *) header;
buffer.length = header_length;
stream = lto_start_uncompression (lto_append_data, &buffer);
lto_uncompress_block (stream, data, *len);
lto_end_uncompression (stream);
*len = buffer.length - header_length;
data = buffer.data + header_length;
}
lto_check_version (((const lto_header *)data)->major_version,
((const lto_header *)data)->minor_version);
return data;
}
const char *
lto_get_section_data (struct lto_file_decl_data *file_data,
enum lto_section_type section_type,
const char *name,
size_t *len)
{
const char *data = (get_section_f) (file_data, section_type, name, len);
const size_t header_length = sizeof (struct lto_data_header);
struct lto_data_header *header;
struct lto_buffer buffer;
struct lto_compression_stream *stream;
lto_stats.section_size[section_type] += *len;
if (data == NULL)
return NULL;
/* FIXME lto: WPA mode does not write compressed sections, so for now
suppress uncompression if flag_ltrans. */
if (!flag_ltrans)
{
/* Create a mapping header containing the underlying data and length,
and prepend this to the uncompression buffer. The uncompressed data
then follows, and a pointer to the start of the uncompressed data is
returned. */
header = (struct lto_data_header *) xmalloc (header_length);
header->data = data;
header->len = *len;
buffer.data = (char *) header;
buffer.length = header_length;
stream = lto_start_uncompression (lto_append_data, &buffer);
lto_uncompress_block (stream, data, *len);
lto_end_uncompression (stream);
*len = buffer.length - header_length;
data = buffer.data + header_length;
}
lto_check_version (((const lto_header *)data)->major_version,
((const lto_header *)data)->minor_version);
return data;
}