C++ SgAsmGenericSection::set_mapped_size方法代码示例

//.........这里部分代码省略.........
        /* Hole is not large enough. We need to recursively move things that are right of our neighborhood, then recompute the
         * all-sections address map and neighborhood(S). */
        ROSE_ASSERT(0==pass); /*logic problem since the recursive call should have enlarged the hole enough*/
        if (debug) {
            fprintf(stderr, "%s    Calling recursively to increase hole size by 0x%08" PRIx64 " (%" PRIu64 ") bytes\n",
                    p, need_more, need_more);
        }
        shift_extend(after_hole, need_more, 0, space, elasticity);
        if (debug) fprintf(stderr, "%s    Returned from recursive call\n", p);
    }

    /* Consider sections that are in the same neighborhood as S */
    if (debug) fprintf(stderr, "%s    -- ADJUSTING --\n", p);
    bool resized_mem = false;
    for (size_t i=0; i<neighbors.size(); i++) {
        SgAsmGenericSection *a = neighbors[i];
        Extent ap = filespace ? a->get_file_extent() : a->get_mapped_preferred_extent();
        switch (ExtentMap::category(ap, sp)) {
          case 'L':
            break;
          case 'R':
            if (filespace) {
                a->set_offset(a->get_offset()+aligned_sasn);
            } else {
                a->set_mapped_preferred_rva(a->get_mapped_preferred_rva()+aligned_sasn);
            }
            break;
          case 'C': /*including S itself*/
          case 'E':
            if (filespace) {
                a->set_offset(a->get_offset()+aligned_sa);
                a->set_size(a->get_size()+sn);
                if (memspace && !resized_mem && a->is_mapped()) {
                    shift_extend(a, 0, sn, ADDRSP_MEMORY, elasticity);
                    resized_mem = true;
                }
            } else {
                a->set_mapped_preferred_rva(a->get_mapped_preferred_rva()+aligned_sa);
                a->set_mapped_size(a->get_mapped_size()+sn);
            }
            break;
          case 'O':
              if (ap.relaxed_first()==sp.relaxed_first()) {
                if (filespace) {
                    a->set_offset(a->get_offset()+aligned_sa);
                    a->set_size(a->get_size()+sn);
                } else {
                    a->set_mapped_preferred_rva(a->get_mapped_preferred_rva()+aligned_sa);
                    a->set_mapped_size(a->get_mapped_size()+sn);
                }
            } else {
                if (filespace) {
                    a->set_size(a->get_size()+aligned_sasn);
                    if (memspace && !resized_mem && a->is_mapped()) {
                        shift_extend(a, 0, aligned_sasn, ADDRSP_MEMORY, elasticity);
                        resized_mem = true;
                    }
                } else {
                    a->set_mapped_size(a->get_mapped_size()+aligned_sasn);
                }
            }
            break;
          case 'I':
            if (filespace) {
                a->set_offset(a->get_offset()+aligned_sa);
            } else {
                a->set_mapped_preferred_rva(a->get_mapped_preferred_rva()+aligned_sa);
            }
            break;
          case 'B':
            if (filespace) {
                a->set_size(a->get_size()+sn);
                if (memspace && !resized_mem && a->is_mapped()) {
                    shift_extend(a, 0, sn, ADDRSP_MEMORY, elasticity);
                    resized_mem = true;
                }
            } else {
                a->set_mapped_size(a->get_size()+sn);
            }
            break;
          default:
            ROSE_ASSERT(!"invalid extent category");
            break;
        }
        if (debug) {
            const char *space_name = filespace ? "file" : "mem";
            rose_addr_t x = filespace ? a->get_file_alignment() : a->get_mapped_alignment();
            fprintf(stderr, "%s   %4s-%c %c0x%08" PRIx64 " 0x%08" PRIx64 " 0x%08" PRIx64,
                    p, space_name, ExtentMap::category(ap, sp),
                    0==ap.relaxed_first()%(x?x:1)?' ':'!',
                    ap.relaxed_first(), ap.size(), ap.relaxed_first()+ap.size());
            Extent newap = filespace ? a->get_file_extent() : a->get_mapped_preferred_extent();
            fprintf(stderr, " -> %c0x%08" PRIx64 " 0x%08" PRIx64 " 0x%08" PRIx64,
                    0==newap.relaxed_first()%(x?x:1)?' ':'!',
                    newap.relaxed_first(), newap.size(), newap.relaxed_first()+newap.size());
            fprintf(stderr, " [%2d] \"%s\"\n", a->get_id(), a->get_name()->get_string(true).c_str());
        }
    }
    if (debug) fprintf(stderr, "%s    -- END --\n", p);
}

/* Looks at the RVA/Size pairs in the PE header and creates an SgAsmGenericSection object for each one.  This must be done
 * after we build the mapping from virtual addresses to file offsets. */
void
SgAsmPEFileHeader::create_table_sections()
{

    /* First, only create the sections. */
    for (size_t i=0; i<p_rvasize_pairs->get_pairs().size(); i++) {
        SgAsmPERVASizePair *pair = p_rvasize_pairs->get_pairs()[i];
        if (0==pair->get_e_size())
            continue;

        /* Table names come from PE file specification and are hard coded by RVA/Size pair index */
        const char *tabname_short;
        std::string tabname = rvasize_pair_name((PairPurpose)i, &tabname_short);

        /* Find the starting offset in the file.
         * FIXME: We have a potential problem here in that ROSE sections are always contiguous in the file but a section created
         *        from an RVA/Size pair is not necessarily contiguous in the file.  Normally such sections are in fact
         *        contiguous and we'll just ignore this for now.  In any case, as long as these sections only ever read their
         *        data via the same MemoryMap that we use here, everything should be fine. [RPM 2009-08-17] */
        MemoryMap *map = get_loader_map();
        ROSE_ASSERT(map!=NULL);
        const MemoryMap::MapElement *elmt = map->find(get_base_va() + pair->get_e_rva());
        if (!elmt) {
            fprintf(stderr, "SgAsmPEFileHeader::create_table_sections: warning: pair-%zu, rva=0x%08"PRIx64", size=%"PRIu64
                    " bytes \"%s\": unable to find a mapping for the virtual address (skipping)\n",
                    i, pair->get_e_rva().get_rva(), pair->get_e_size(), tabname.c_str());
            continue;
        }
        rose_addr_t file_offset = elmt->is_anonymous() ? 0 : elmt->get_va_offset(get_base_va() + pair->get_e_rva(), 1);

        /* Create the new section */
        SgAsmGenericSection *tabsec = NULL;
        switch (i) {
            case 0: {
                /* Sometimes export sections are represented by a ".edata" section, and sometimes they're represented by an
                 * RVA/Size pair, and sometimes both point to the same part of the file. We don't want the exports duplicated
                 * in the AST, so we only create this table as exports if we haven't already seen some other export section. */
                SgAsmGenericSectionPtrList &sections = get_sections()->get_sections();
                bool seen_exports = false;
                for (SgAsmGenericSectionPtrList::iterator si=sections.begin(); !seen_exports && si!=sections.end(); ++si)
                    seen_exports = isSgAsmPEExportSection(*si);
                if (seen_exports) {
                    tabsec = new SgAsmGenericSection(get_file(), this);
                } else {
                    tabsec = new SgAsmPEExportSection(this);
                }
                break;
            }
            case 1: {
                /* Sometimes import sections are represented by a ".idata" section, and sometimes they're represented by an
                 * RVA/Size pair, and sometimes both point to the same part of the file.  We don't want the imports duplicated
                 * in the AST, so we only create this table as imports if we haven't already seen some other import section. */
                SgAsmGenericSectionPtrList &sections = get_sections()->get_sections();
                bool seen_imports = false;
                for (SgAsmGenericSectionPtrList::iterator si=sections.begin(); !seen_imports && si!=sections.end(); ++si)
                    seen_imports = isSgAsmPEImportSection(*si);
                if (seen_imports) {
                    tabsec = new SgAsmGenericSection(get_file(), this);
                } else {
                    tabsec = new SgAsmPEImportSection(this);
                }
                break;
            }
            default: {
                tabsec = new SgAsmGenericSection(get_file(), this);
                break;
            }
        }
        tabsec->set_name(new SgAsmBasicString(tabname));
        tabsec->set_short_name(tabname_short);
        tabsec->set_synthesized(true);
        tabsec->set_purpose(SP_HEADER);

        tabsec->set_offset(file_offset);
        tabsec->set_size(pair->get_e_size());
        tabsec->set_file_alignment(1);

        tabsec->set_mapped_alignment(1);
        tabsec->set_mapped_preferred_rva(pair->get_e_rva().get_rva());
        tabsec->set_mapped_actual_va(pair->get_e_rva().get_rva()+get_base_va()); /*FIXME: not sure this is correct. [RPM 2009-09-11]*/
        tabsec->set_mapped_size(pair->get_e_size());
        tabsec->set_mapped_rperm(true);
        tabsec->set_mapped_wperm(false);
        tabsec->set_mapped_xperm(false);
        pair->set_section(tabsec);
        pair->set_e_rva(pair->get_e_rva().set_section(tabsec));
    }

    /* Now parse the sections */
    for (size_t i=0; i<p_rvasize_pairs->get_pairs().size(); i++) {
        SgAsmPERVASizePair *pair = p_rvasize_pairs->get_pairs()[i];
        SgAsmGenericSection *tabsec = pair->get_section();
        if (tabsec)
            tabsec->parse();
    }
}

/* Looks at the RVA/Size pairs in the PE header and creates an SgAsmGenericSection object for each one.  This must be done
 * after we build the mapping from virtual addresses to file offsets. */
void
SgAsmPEFileHeader::create_table_sections()
{

    /* First, only create the sections. */
    for (size_t i=0; i<p_rvasize_pairs->get_pairs().size(); i++) {
        SgAsmPERVASizePair *pair = p_rvasize_pairs->get_pairs()[i];
        if (0==pair->get_e_size())
            continue;

        /* Table names come from PE file specification and are hard coded by RVA/Size pair index */
        const char *tabname_short;
        std::string tabname = rvasize_pair_name((PairPurpose)i, &tabname_short);

        /* Find the starting offset in the file.
         * FIXME: We have a potential problem here in that ROSE sections are always contiguous in the file but a section created
         *        from an RVA/Size pair is not necessarily contiguous in the file.  Normally such sections are in fact
         *        contiguous and we'll just ignore this for now.  In any case, as long as these sections only ever read their
         *        data via the same MemoryMap that we use here, everything should be fine. [RPM 2009-08-17] */
        rose_addr_t pair_va = get_base_va() + pair->get_e_rva();
        MemoryMap::Ptr map = get_loader_map();
        ROSE_ASSERT(map!=NULL);
        if (!map->baseSize(pair_va, pair->get_e_size()).exists(Sawyer::Container::MATCH_WHOLE)) {
            mlog[WARN] <<"SgAsmPEFileHeader::create_table_sections: pair-" <<i
                       <<", rva=" <<StringUtility::addrToString(pair->get_e_rva().get_rva())
                       <<", size=" <<StringUtility::plural(pair->get_e_size(), "bytes")
                       <<" \"" <<StringUtility::cEscape(tabname) <<"\":"
                       <<" unable to find a mapping for the virtual address (skipping)\n";
            continue;
        }
        const MemoryMap::Node &me = *map->at(pair_va).findNode();
        rose_addr_t file_offset = me.value().offset() + pair_va - me.key().least();

        /* Create the new section */
        SgAsmGenericSection *tabsec = NULL;
        switch (i) {
            case 0: {
                /* Sometimes export sections are represented by a ".edata" section, and sometimes they're represented by an
                 * RVA/Size pair, sometimes both point to the same part of the file, and sometimes the RVA/Size pair points to
                 * a different part of the file. We don't want the exports duplicated in the AST, so we only create this table
                 * as exports if we haven't already seen some other export section. */
                SgAsmGenericSectionPtrList &sections = get_sections()->get_sections();
                bool seen_exports = false;
                for (SgAsmGenericSectionPtrList::iterator si=sections.begin(); !seen_exports && si!=sections.end(); ++si)
                    seen_exports = isSgAsmPEExportSection(*si);
                if (seen_exports) {
                    tabsec = new SgAsmGenericSection(get_file(), this);
                } else {
                    tabsec = new SgAsmPEExportSection(this);
                }
                break;
            }
            case 1: {
                /* Sometimes import sections are represented by a ".idata" section, and sometimes they're represented by an
                 * RVA/Size pair, and sometimes both point to the same part of the file.  We don't want the imports duplicated
                 * in the AST, so we only create this table as imports if we haven't already seen some other import section. */
                SgAsmGenericSectionPtrList &sections = get_sections()->get_sections();
                bool seen_imports = false;
                for (SgAsmGenericSectionPtrList::iterator si=sections.begin(); !seen_imports && si!=sections.end(); ++si)
                    seen_imports = isSgAsmPEImportSection(*si);
                if (seen_imports) {
                    tabsec = new SgAsmGenericSection(get_file(), this);
                } else {
                    tabsec = new SgAsmPEImportSection(this);
                }
                break;
            }
            default: {
                tabsec = new SgAsmGenericSection(get_file(), this);
                break;
            }
        }
        tabsec->set_name(new SgAsmBasicString(tabname));
        tabsec->set_short_name(tabname_short);
        tabsec->set_synthesized(true);
        tabsec->set_purpose(SP_HEADER);

        tabsec->set_offset(file_offset);
        tabsec->set_size(pair->get_e_size());
        tabsec->set_file_alignment(1);

        tabsec->set_mapped_alignment(1);
        tabsec->set_mapped_preferred_rva(pair->get_e_rva().get_rva());
        tabsec->set_mapped_actual_va(pair->get_e_rva().get_rva()+get_base_va()); /*FIXME: not sure this is correct. [RPM 2009-09-11]*/
        tabsec->set_mapped_size(pair->get_e_size());
        tabsec->set_mapped_rperm(true);
        tabsec->set_mapped_wperm(false);
        tabsec->set_mapped_xperm(false);
        pair->set_section(tabsec);
        pair->set_e_rva(pair->get_e_rva().set_section(tabsec));
    }

    /* Now parse the sections */
    for (size_t i=0; i<p_rvasize_pairs->get_pairs().size(); i++) {
        SgAsmPERVASizePair *pair = p_rvasize_pairs->get_pairs()[i];
        SgAsmGenericSection *tabsec = pair->get_section();
        if (tabsec)
            tabsec->parse();
//.........这里部分代码省略.........