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https://github.com/ksherlock/wdc-utils.git
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section updates
This commit is contained in:
Kelvin Sherlock
parent
2f5fbf5314
commit
7a2168afc7
142
dumpobj.cpp
142
dumpobj.cpp
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@ -138,12 +138,43 @@ std::string read_pstring(T &iter) {
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struct symbol {
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std::string name;
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uint8_t type;
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uint8_t flags;
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uint8_t section;
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uint32_t offset;
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uint8_t type = S_UND;
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uint8_t flags = 0;
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uint8_t section = 0xff;
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uint32_t offset = 0;
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};
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struct section {
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std::string name;
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uint8_t number = 0;
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uint8_t flags = 0;
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uint32_t size = 0;
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uint32_t org = 0;
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uint32_t pc = 0;
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};
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std::vector<section> read_sections(const std::vector<uint8_t> §ion_data) {
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std::vector<section> sections;
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auto iter = section_data.begin();
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while (iter != section_data.end()) {
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section s;
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s.number = read_8(iter);
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s.flags = read_8(iter);
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s.size = read_32(iter);
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s.org = read_32(iter);
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if (!(s.flags & SEC_NONAME)) s.name = read_cstring(iter);
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if (sections.size() < s.number) sections.resize(s.number);
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if (sections.size() == s.number) sections.emplace_back(std::move(s));
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else sections[s.number] = std::move(s);
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}
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return sections;
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}
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std::vector<symbol> read_symbols(const std::vector<uint8_t> &symbol_data) {
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@ -151,14 +182,15 @@ std::vector<symbol> read_symbols(const std::vector<uint8_t> &symbol_data) {
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auto iter = symbol_data.begin();
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while (iter != symbol_data.end()) {
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uint8_t type = read_8(iter);
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uint8_t flags = read_8(iter);
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uint8_t section = read_8(iter);
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uint32_t offset = type == S_UND ? 0 : read_32(iter);
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std::string name = read_cstring(iter);
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symbol s;
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s.type = read_8(iter);
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s.flags = read_8(iter);
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s.section = read_8(iter);
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s.offset = s.type == S_UND ? 0 : read_32(iter);
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s.name = read_cstring(iter);
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symbols.emplace_back(symbol{name, type, flags, section, offset});
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symbols.emplace_back(std::move(s));
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}
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return symbols;
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@ -182,7 +214,7 @@ symbol find_symbol(const std::vector<symbol> &symbols, unsigned section, unsigne
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return s.section == section && s.offset == offset && s.type != S_UND;
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});
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if (iter != symbols.end()) return *iter;
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return symbol{"", S_UND, 0, 0xff, 0};
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return symbol{};
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}
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@ -201,8 +233,8 @@ void place_labels(std::vector<symbol> &labels, uint32_t pc) {
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bool dump_obj(const char *name, int fd)
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{
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static const char *sections[] = { "PAGE0", "CODE", "KDATA", "DATA", "UDATA" };
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static const char *types[] = { "S_UND", "S_ABS", "S_REL", "S_EXP", "S_REG", "S_FREG" };
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static const char *kSections[] = { "PAGE0", "CODE", "KDATA", "DATA", "UDATA" };
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static const char *kTypes[] = { "S_UND", "S_ABS", "S_REL", "S_EXP", "S_REG", "S_FREG" };
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Mod_head h;
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ssize_t ok;
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@ -265,21 +297,24 @@ bool dump_obj(const char *name, int fd)
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if (ok != h.h_symsize) errx(EX_DATAERR, "%s symbols truncated", name);
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std::vector<symbol> symbols = read_symbols(symbol_data);
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unsigned section = 1; // default section = CODE.
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std::vector<symbol> labels = labels_for_section(symbols, section);
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//uint32_t label_pc = labels.empty() ? 0xffff : labels.back().offset;
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uint8_t op = REC_END;
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std::vector<section> sections = read_sections(section_data);
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disassembler d;
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uint8_t op = REC_END;
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unsigned section = SECT_CODE; // default section = CODE
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unsigned line = 0;
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std::string file;
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if (sections.size() < 5) sections.resize(5);
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for (int i = 0; i < 5; ++i)
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if (sections[i].name.empty()) sections[i].name = kSections[i];
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d.set_pc(0);
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d.set_code(true);
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std::vector<symbol> labels = labels_for_section(symbols, section);
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auto iter = data.begin();
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while (iter != data.end()) {
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@ -324,17 +359,26 @@ bool dump_obj(const char *name, int fd)
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uint8_t section = read_8(iter);
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uint32_t offset = read_32(iter);
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std::string name;
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symbol s = find_symbol(symbols, section, offset);
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if (s.type) {
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stack.push_back(s.name);
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name = s.name;
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} else {
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if (section < sizeof(sections) / sizeof(sections[0]))
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snprintf(buffer, sizeof(buffer), "%s+$%04x", sections[section], offset);
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else
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snprintf(buffer, sizeof(buffer), "section %02x+$%04x", section, offset);
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stack.push_back(buffer);
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if (section < sizeof(kSections) / sizeof(kSections[0]))
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name = kSections[section];
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else {
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snprintf(buffer, sizeof(buffer), "section%d", section);
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name = buffer;
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}
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}
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if (offset) {
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snprintf(buffer, sizeof(buffer), "+$%04x", offset);
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name += buffer;
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}
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stack.push_back(name);
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break;
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}
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@ -358,7 +402,7 @@ bool dump_obj(const char *name, int fd)
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case OP_NEG:
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case OP_FLP: {
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static const char *ops[] = {
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".NOT.", "-", "/" // ?
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".NOT.", "-", "\\"
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};
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if (stack.empty()) errx(EX_DATAERR, "%s : stack underflow error", name);
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@ -476,11 +520,12 @@ bool dump_obj(const char *name, int fd)
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case REC_SECT: {
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d.flush();
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d.set_pc(0);
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uint8_t sec = read_8(iter);
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printf("\t.sect\t%d\n", sec);
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if (sec != section) {
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sections[section].pc = d.pc();
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section = sec;
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d.set_pc(sections[section].pc);
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labels = labels_for_section(symbols, section);
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d.set_code(section == 1 || section > 4);
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}
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@ -531,33 +576,26 @@ bool dump_obj(const char *name, int fd)
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printf("\nSections\n");
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iter = section_data.begin();
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while (iter != section_data.end()) {
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for(const auto &s : sections) {
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if (s.size) {
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printf("section %d\n", s.number);
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if (!(s.flags & SEC_NONAME))
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printf("name: %s\n", s.name.c_str());
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printf("flags: %02x ", s.flags);
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uint8_t number = read_8(iter);
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uint8_t flags = read_8(iter);
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uint32_t size = read_32(iter);
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uint32_t org = read_32(iter);
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#undef _
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#define _(x) if (s.flags & x) fputs(#x " ", stdout)
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_(SEC_OFFSET);
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_(SEC_INDIRECT);
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_(SEC_STACKED);
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_(SEC_REF_ONLY);
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_(SEC_CONST);
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_(SEC_DIRECT);
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_(SEC_NONAME);
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fputs("\n", stdout);
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printf("section %d\n", number);
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printf("flags: %02x ", flags);
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#undef _
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#define _(x) if (flags & x) fputs(#x " ", stdout)
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_(SEC_OFFSET);
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_(SEC_INDIRECT);
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_(SEC_STACKED);
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_(SEC_REF_ONLY);
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_(SEC_CONST);
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_(SEC_DIRECT);
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_(SEC_NONAME);
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fputs("\n", stdout);
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// todo -- section name -- cstring?
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//assert(flags & SEC_NONAME);
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std::string s;
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if (!(flags & SEC_NONAME)) s = read_cstring(iter);
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}
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}
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@ -574,7 +612,7 @@ bool dump_obj(const char *name, int fd)
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std::string name = read_cstring(iter);
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printf("name : %s\n", name.c_str());
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printf("type : $%02x %s\n", type, type < sizeof(types) / sizeof(types[0]) ? types[type] : "");
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printf("type : $%02x %s\n", type, type < sizeof(kTypes) / sizeof(kTypes[0]) ? kTypes[type] : "");
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printf("flags: $%02x ", flags);
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#undef _
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#define _(x) if (flags & x) fputs(#x " ", stdout)
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