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-rw-r--r--libdwarf/pro_types.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/libdwarf/pro_types.c b/libdwarf/pro_types.c
new file mode 100644
index 0000000..ad14164
--- /dev/null
+++ b/libdwarf/pro_types.c
@@ -0,0 +1,284 @@
+/*
+
+ Copyright (C) 2000,2004 Silicon Graphics, Inc. All Rights Reserved.
+ Portions Copyright 2011 David Anderson. All Rights Reserved.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of version 2.1 of the GNU Lesser General Public License
+ as published by the Free Software Foundation.
+
+ This program is distributed in the hope that it would be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+ Further, this software is distributed without any warranty that it is
+ free of the rightful claim of any third person regarding infringement
+ or the like. Any license provided herein, whether implied or
+ otherwise, applies only to this software file. Patent licenses, if
+ any, provided herein do not apply to combinations of this program with
+ other software, or any other product whatsoever.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this program; if not, write the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,
+ USA.
+
+ Contact information: Silicon Graphics, Inc., 1500 Crittenden Lane,
+ Mountain View, CA 94043, or:
+
+ http://www.sgi.com
+
+ For further information regarding this notice, see:
+
+ http://oss.sgi.com/projects/GenInfo/NoticeExplan
+
+*/
+
+
+
+#include "config.h"
+#include "libdwarfdefs.h"
+#include <stdio.h>
+#include <string.h>
+#ifdef HAVE_ELFACCESS_H
+#include <elfaccess.h>
+#endif
+#include "pro_incl.h"
+#include "pro_section.h"
+
+
+/*
+ This function adds another type name to the
+ list of type names for the given Dwarf_P_Debug.
+ It returns 0 on error, and 1 otherwise.
+*/
+Dwarf_Unsigned
+dwarf_add_typename(Dwarf_P_Debug dbg,
+ Dwarf_P_Die die,
+ char *type_name, Dwarf_Error * error)
+{
+ return
+ _dwarf_add_simple_name_entry(dbg, die, type_name,
+ dwarf_snk_typename, error);
+}
+
+/*
+ The following is the generic 'add a simple name entry'
+ for any of the simple name sections.
+
+ See enum dwarf_sn_kind in pro_opaque.h
+
+*/
+Dwarf_Unsigned
+_dwarf_add_simple_name_entry(Dwarf_P_Debug dbg,
+ Dwarf_P_Die die,
+ char *entry_name,
+ enum dwarf_sn_kind entrykind,
+ Dwarf_Error * error)
+{
+ Dwarf_P_Simple_nameentry nameentry;
+ Dwarf_P_Simple_name_header hdr;
+ char *name;
+ int uword_size;
+
+ if (dbg == NULL) {
+ _dwarf_p_error(NULL, error, DW_DLE_DBG_NULL);
+ return (0);
+ }
+
+ if (die == NULL) {
+ _dwarf_p_error(NULL, error, DW_DLE_DIE_NULL);
+ return (0);
+ }
+
+
+ nameentry = (Dwarf_P_Simple_nameentry)
+ _dwarf_p_get_alloc(dbg,
+ sizeof(struct Dwarf_P_Simple_nameentry_s));
+ if (nameentry == NULL) {
+ _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL);
+ return (0);
+ }
+
+ name = _dwarf_p_get_alloc(dbg, strlen(entry_name) + 1);
+ if (name == NULL) {
+ _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL);
+ return (0);
+ }
+ strcpy(name, entry_name);
+
+ nameentry->sne_die = die;
+ nameentry->sne_name = name;
+ nameentry->sne_name_len = strlen(name);
+ uword_size = dbg->de_offset_size;
+
+ hdr = &dbg->de_simple_name_headers[entrykind];
+ if (hdr->sn_head == NULL)
+ hdr->sn_head = hdr->sn_tail = nameentry;
+ else {
+ hdr->sn_tail->sne_next = nameentry;
+ hdr->sn_tail = nameentry;
+ }
+ hdr->sn_count++;
+ hdr->sn_net_len += uword_size + nameentry->sne_name_len + 1;
+
+ return (1);
+}
+
+
+
+/*
+ _dwarf_transform_simplename_to_disk writes
+ ".rel.debug_pubnames",
+ ".rel.debug_funcnames", sgi extension
+ ".rel.debug_typenames", sgi extension
+ ".rel.debug_varnames", sgi extension
+ ".rel.debug_weaknames", sgi extension
+ to disk.
+ section_index indexes one of those sections.
+ entrykind is one of those 'kind's. */
+int
+_dwarf_transform_simplename_to_disk(Dwarf_P_Debug dbg,
+ enum dwarf_sn_kind entrykind,
+ int section_index, /* in de_elf_sects etc */
+ Dwarf_Error * error)
+{
+
+
+ /* Used to fill in 0. */
+ const Dwarf_Signed big_zero = 0;
+
+ /* Used to scan the section data buffers. */
+ Dwarf_P_Section_Data debug_sect;
+
+ Dwarf_Signed debug_info_size;
+
+ Dwarf_P_Simple_nameentry nameentry_original;
+ Dwarf_P_Simple_nameentry nameentry;
+ Dwarf_Small *stream_bytes;
+ Dwarf_Small *cur_stream_bytes_ptr;
+ Dwarf_Unsigned stream_bytes_count;
+ Dwarf_Unsigned adjusted_length; /* count excluding length field */
+
+
+ int uword_size = dbg->de_offset_size;
+ int extension_size = dbg->de_64bit_extension ? 4 : 0;
+
+ Dwarf_P_Simple_name_header hdr;
+
+
+ /* ***** BEGIN CODE ***** */
+
+ debug_info_size = 0;
+ for (debug_sect = dbg->de_debug_sects; debug_sect != NULL;
+ debug_sect = debug_sect->ds_next) {
+ /* We want the size of the .debug_info section for this CU
+ because the dwarf spec requires us to output it below so we
+ look for it specifically. */
+ if (debug_sect->ds_elf_sect_no == dbg->de_elf_sects[DEBUG_INFO]) {
+ debug_info_size += debug_sect->ds_nbytes;
+ }
+ }
+
+ hdr = &dbg->de_simple_name_headers[entrykind];
+ /* Size of the .debug_typenames (or similar) section header. */
+ stream_bytes_count = extension_size + uword_size + /* Size of
+ length field. */
+ sizeof(Dwarf_Half) + /* Size of version field. */
+ uword_size + /* Size of .debug_info offset. */
+ uword_size; /* Size of .debug_names. */
+
+
+
+ nameentry_original = hdr->sn_head;
+ nameentry = nameentry_original;
+ /* add in the content size */
+ stream_bytes_count += hdr->sn_net_len;
+
+ /* Size of the last 0 offset. */
+ stream_bytes_count += uword_size;
+
+ /* Now we know how long the entire section is */
+ GET_CHUNK(dbg, dbg->de_elf_sects[section_index],
+ stream_bytes, (unsigned long) stream_bytes_count, error);
+ if (stream_bytes == NULL) {
+ _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL);
+ return (0);
+ }
+ cur_stream_bytes_ptr = stream_bytes;
+
+ if (extension_size) {
+ Dwarf_Unsigned x = DISTINGUISHED_VALUE;
+
+ WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr,
+ (const void *) &x, sizeof(x), extension_size);
+ cur_stream_bytes_ptr += extension_size;
+
+ }
+ /* Write the adjusted length of .debug_*names section. */
+ adjusted_length = stream_bytes_count - uword_size - extension_size;
+ WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr,
+ (const void *) &adjusted_length,
+ sizeof(adjusted_length), uword_size);
+ cur_stream_bytes_ptr += uword_size;
+
+ /* Write the version as 2 bytes. */
+ {
+ Dwarf_Half verstamp = CURRENT_VERSION_STAMP;
+
+ WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr,
+ (const void *) &verstamp,
+ sizeof(verstamp), sizeof(Dwarf_Half));
+ cur_stream_bytes_ptr += sizeof(Dwarf_Half);
+ }
+
+ /* Write the offset of the compile-unit. */
+ WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr,
+ (const void *) &big_zero,
+ sizeof(big_zero), uword_size);
+ cur_stream_bytes_ptr += uword_size;
+
+ /* now create the relocation for the compile_unit offset */
+ {
+ int res = dbg->de_reloc_name(dbg,
+ section_index,
+ extension_size + uword_size +
+ sizeof(Dwarf_Half) /* r_offset */ ,
+ /* debug_info section name symbol */
+ dbg->de_sect_name_idx[DEBUG_INFO],
+ dwarf_drt_data_reloc,
+ uword_size);
+
+ if (res != DW_DLV_OK) {
+ _dwarf_p_error(dbg, error, DW_DLE_ALLOC_FAIL);
+ return (0);
+ }
+ }
+
+ /* Write the size of .debug_info section. */
+ WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr,
+ (const void *) &debug_info_size,
+ sizeof(debug_info_size), uword_size);
+ cur_stream_bytes_ptr += uword_size;
+
+
+ for (nameentry = nameentry_original;
+ nameentry != NULL; nameentry = nameentry->sne_next) {
+
+ /* Copy offset of die from start of compile-unit. */
+ WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr,
+ (const void *) &nameentry->sne_die->di_offset,
+ sizeof(nameentry->sne_die->di_offset),
+ uword_size);
+ cur_stream_bytes_ptr += uword_size;
+
+ /* Copy the type name. */
+ strcpy((char *) cur_stream_bytes_ptr, nameentry->sne_name);
+ cur_stream_bytes_ptr += nameentry->sne_name_len + 1;
+ }
+
+ WRITE_UNALIGNED(dbg, cur_stream_bytes_ptr,
+ (const void *) &big_zero,
+ sizeof(big_zero), uword_size);
+ return (int) dbg->de_n_debug_sect;
+}
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