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improved label placement.

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This commit is contained in:
Kelvin Sherlock 2016-12-25 12:35:04 -05:00
parent d991eabdfd
commit fbd4fad488
1 changed files with 29 additions and 7 deletions
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36
dumpobj.cpp
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@ -182,6 +182,19 @@ symbol find_symbol(const std::vector<symbol> &symbols, unsigned section, unsigne
}
void place_labels(std::vector<symbol> &labels, uint32_t pc) {
while (!labels.empty()) {
auto &label = labels.back();
if (label.offset > pc) return;
if (label.offset == pc) {
printf("%s:\n", label.name.c_str());
} else {
warnx("Unable to place label %s (offset $%04x)", label.name.c_str(), label.offset);
}
labels.pop_back();
}
}
void dump_obj(const char *name, int fd)
{
static const char *sections[] = { "PAGE0", "CODE", "KDATA", "DATA", "UDATA" };
@ -249,7 +262,7 @@ void dump_obj(const char *name, int fd)
unsigned section = 1; // default section = CODE.
std::vector<symbol> labels = labels_for_section(symbols, section);
//uint32_t label_pc = labels.empty() ? 0xffff : labels.back().offset;
uint8_t op = REC_END;
@ -258,16 +271,16 @@ void dump_obj(const char *name, int fd)
auto iter = data.begin();
while (iter != data.end()) {
while (!labels.empty() && labels.back().offset == d.pc()) {
printf("%s:\n", labels.back().name.c_str());
labels.pop_back();
}
place_labels(labels, d.pc());
op = read_8(iter);
if (op == 0) break;
if (op < 0xf0) {
d.process(iter, iter + op);
iter += op;
auto end = iter + op;
while (iter != end) {
d.process(*iter++);
place_labels(labels, d.pc());
}
continue;
}
@ -450,6 +463,15 @@ void dump_obj(const char *name, int fd)
}
}
place_labels(labels, d.pc());
for(auto &label : labels) {
warnx("Unable to place label %s (offset $%04x)", label.name.c_str(), label.offset);
}
if (iter != data.end() || op != REC_END) errx(EX_DATAERR, "%s records ended early", name);