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

void
SgAsmGenericFile::dump(FILE *f) const
{
    fprintf(f, "Encoding: %s\n", get_data_converter() ? escapeString(get_data_converter()->name()).c_str() : "none");

    SgAsmGenericSectionPtrList sections = get_sections();
    if (sections.size()==0) {
        fprintf(f, "No sections defined for file.\n");
        return;
    }

    /* Sort sections by offset (lowest to highest), then size (largest to smallest but zero-sized entries first) */
    for (size_t i = 1; i < sections.size(); i++) {
        for (size_t j=0; j<i; j++) {
            if (sections[j]->get_offset() == sections[i]->get_offset()) {
                rose_addr_t size_i = sections[i]->get_size();
                if (0==size_i) size_i = ~(rose_addr_t)0;
                rose_addr_t size_j = sections[j]->get_size();
                if (0==size_j) size_j = ~(rose_addr_t)0;
                if (size_j < size_i) {
                    SgAsmGenericSection *x = sections[j];
                    sections[j] = sections[i];
                    sections[i] = x;
                }
            } else if (sections[j]->get_offset() > sections[i]->get_offset()) {
                SgAsmGenericSection *x = sections[j];
                sections[j] = sections[i];
                sections[i] = x;
            }
        }
    }

    /* Print results */
    fprintf(f, "File sections:\n");
    fprintf(f, "  Flg File-Addr  File-Size  File-End    Base-VA    Start-RVA  Virt-Size  End-RVA    Perm  ID Name\n");
    fprintf(f, "  --- ---------- ---------- ----------  ---------- ---------- ---------- ---------- ---- --- -----------------\n");
    rose_addr_t high_water = 0;
    for (size_t i=0; i<sections.size(); i++) {
        SgAsmGenericSection *section = sections[i];

        /* Does section overlap with any other (before or after)? */
        char overlap[4] = "   "; /* status characters: overlap prior, overlap subsequent, hole */
        for (size_t j=0; overlap[0]==' ' && j<i; j++) {
            if (sections[j]->get_offset()+sections[j]->get_size() > section->get_offset()) {
                overlap[0] = '<';
            }
        }
        for (size_t j=i+1; overlap[1]==' ' && j<sections.size(); j++) {
            if (section->get_offset()+section->get_size() > sections[j]->get_offset()) {
                overlap[1] = '>';
            }
        }

        /* Is there a hole before section[i]? */
        if (high_water < section->get_offset()) {
            overlap[2] = 'H'; /* truly unaccounted region of the file */
        } else if (i>0 && sections[i-1]->get_offset()+sections[i-1]->get_size() < section->get_offset()) {
            overlap[2] = 'h'; /* unaccounted only if overlaps are not allowed */
        }
        high_water = std::max(high_water, section->get_offset() + section->get_size());
        fprintf(f, "  %3s", overlap);

        /* File addresses */
        fprintf(f, "%c0x%08" PRIx64 " 0x%08" PRIx64 " 0x%08" PRIx64,
                section->get_file_alignment()==0 || section->get_offset()%section->get_file_alignment()==0?' ':'!',
                section->get_offset(), section->get_size(), section->get_offset()+section->get_size());

        /* Mapped addresses */
        if (section->is_mapped()) {
            fprintf(f, " %c0x%08" PRIx64 " 0x%08" PRIx64 " 0x%08" PRIx64 " 0x%08" PRIx64,
                    (section->get_mapped_alignment()==0 ||
                     section->get_mapped_preferred_rva()%section->get_mapped_alignment()==0?' ':'!'),
                    section->get_base_va(), section->get_mapped_preferred_rva(), section->get_mapped_size(),
                    section->get_mapped_preferred_rva()+section->get_mapped_size());
        } else {
            fprintf(f, " %*s", 4*11, "");
        }

        /* Permissions */
        if (section->is_mapped()) {
            fprintf(f, " %c%c%c ",
                    section->get_mapped_rperm()?'r':'-',
                    section->get_mapped_wperm()?'w':'-',
                    section->get_mapped_xperm()?'x':'-');
        } else {
            fputs("     ", f);
        }

        /* Section ID, name */
        if (section->get_id()>=0) {
            fprintf(f, " %3d", section->get_id());
        } else {
            fputs("    ", f);
        }
        fprintf(f, " %s\n", section->get_name()->get_string(true).c_str());
    }

    char overlap[4] = "   ";
    if (high_water < get_current_size()) {
        overlap[2] = 'H';
//.........这里部分代码省略.........

/* Maps the sections of a single header. */
void
BinaryLoader::remap(MemoryMap *map, SgAsmGenericHeader *header)
{
    SgAsmGenericFile *file = header->get_file();
    ASSERT_not_null(file);

    Stream trace(mlog[TRACE]);

    trace <<"remapping sections of " <<header->get_file()->get_name() <<"\n";
    SgAsmGenericSectionPtrList sections = get_remap_sections(header);

    rose_addr_t old_base_va = header->get_base_va();
    rose_addr_t new_base_va = rebase(map, header, sections);
    if (new_base_va != old_base_va) {
        trace <<"  temporarily rebasing header from " <<StringUtility::addrToString(old_base_va)
              <<" to " <<StringUtility::addrToString(new_base_va) <<"\n";
        header->set_base_va(new_base_va);
    }

    try {
        for (SgAsmGenericSectionPtrList::iterator si=sections.begin(); si!=sections.end(); ++si) {
            SgAsmGenericSection *section = *si;
            section->set_mapped_actual_va(0); /*reset in case previously mapped*/

            if (trace) {
                trace <<"  mapping section [" <<section->get_id() <<"] \"" <<section->get_name()->get_string(true) <<"\"";
                if (section->get_base_va()!=0)
                    trace <<" with base va " <<StringUtility::addrToString(section->get_base_va());
                trace <<"\n";
                trace <<"    Specified RVA:       " <<StringUtility::addrToString(section->get_mapped_preferred_rva())
                      <<" + " <<StringUtility::addrToString(section->get_mapped_size()) <<" bytes"
                      <<" = " <<StringUtility::addrToString(section->get_mapped_preferred_rva()+section->get_mapped_size())
                      <<"\n";
                if (section->get_base_va()!=0) {
                    trace <<"    Specified  VA:       "
                          <<StringUtility::addrToString(section->get_base_va() + section->get_mapped_preferred_rva()) <<" + "
                          <<StringUtility::addrToString(section->get_mapped_size()) <<" bytes = "
                          <<StringUtility::addrToString(section->get_base_va() + section->get_mapped_preferred_rva() +
                                                        section->get_mapped_size()) <<"\n";
                }
                trace <<"    Specified offset:    "
                      <<StringUtility::addrToString(section->get_offset()) <<" + "
                      <<StringUtility::addrToString(section->get_size()) <<" bytes = "
                      <<StringUtility::addrToString(section->get_offset()+section->get_size()) <<"\n";
                trace <<"    Specified alignment: memory=[" <<section->get_mapped_alignment() <<","
                      <<section->get_mapped_alignment() <<"], file=["
                      <<section->get_file_alignment() <<"," <<section->get_file_alignment() <<"]\n";
            }

            /* Figure out alignment, etc. */
            rose_addr_t malign_lo=1, malign_hi=1, va=0, mem_size=0, offset=0, file_size=0, va_offset=0;
            bool anon_lo=true, anon_hi=true, map_private=false;
            ConflictResolution resolve = RESOLVE_THROW;
            MappingContribution contrib = align_values(section, map,                      /* inputs */
                                                       &malign_lo, &malign_hi,            /* alignment outputs */
                                                       &va, &mem_size,                    /* memory location outputs */
                                                       &offset, &file_size, &map_private, /* file location outputs */
                                                       &va_offset, &anon_lo, &anon_hi,    /* internal location outputs */
                                                       &resolve);                         /* conflict resolution output */
            rose_addr_t falign_lo = std::max(section->get_file_alignment(), (rose_addr_t)1);
            rose_addr_t falign_hi = falign_lo;

            if (trace) {
                if (CONTRIBUTE_NONE==contrib || 0==mem_size) {
                    trace <<"    Does not contribute to map\n";
                } else {
                    trace <<"    Adjusted alignment:  memory=["
                          <<malign_lo <<"," <<malign_hi <<"], file=[" <<falign_lo <<"," <<falign_hi <<"]\n";
                    trace <<"    Aligned VA:          "
                          <<StringUtility::addrToString(va) <<" + "
                          <<StringUtility::addrToString(mem_size) <<" bytes = "
                          <<StringUtility::addrToString(va+mem_size);
                    if (section->get_base_va()+section->get_mapped_preferred_rva()==va &&
                        section->get_mapped_size()==mem_size) {
                        trace <<" (no change)\n";
                    } else {
                        trace <<"\n";
                    }
                    if (va < new_base_va) {
                        trace <<"    WARNING: aligned va " <<StringUtility::addrToString(va) <<" is less than "
                              <<(new_base_va==old_base_va?"":"temporary ") <<"base va "
                              <<StringUtility::addrToString(new_base_va) <<"\n";
                    }
                    if (CONTRIBUTE_ADD==contrib) {
                        trace <<"    Aligned offset:      " <<StringUtility::addrToString(offset) <<" + "
                              <<StringUtility::addrToString(file_size) <<" bytes = "
                              <<StringUtility::addrToString(offset+file_size)
                              <<(section->get_offset()==offset && section->get_size()==file_size ? " (no change)\n" : "\n");
                        trace <<"    Permissions:         "
                              <<(section->get_mapped_rperm()?'r':'-')
                              <<(section->get_mapped_wperm()?'w':'-')
                              <<(section->get_mapped_xperm()?'x':'-') <<"\n";
                        trace <<"    Internal offset:     " <<StringUtility::addrToString(va_offset)
                              <<" (va " <<StringUtility::addrToString(va+va_offset) <<")\n";
                    }
                }
            }

            /* Sanity checks */
//.........这里部分代码省略.........