mirror of
https://github.com/ksherlock/merlin-utils.git
synced 2024-12-12 23:29:07 +00:00
misc fixes.
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parent
7048c59813
commit
f8f698d3d6
31
link.cpp
31
link.cpp
@ -74,6 +74,8 @@ symbol *find_symbol(const std::string &name) {
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struct cookie {
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std::string file;
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std::vector<unsigned> remap;
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//std::vector<std::pair<unsigned, unsigned>> zero;
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uint32_t start = 0;
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uint32_t length = 0;
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};
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@ -162,25 +164,25 @@ void process_reloc(byte_view &data, cookie &cookie) {
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external = flag & 0x04;
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switch(flag & ~0x04) {
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case 0xd0:
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shift = 16;
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shift = -16;
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size = 1;
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break;
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case 0xd1:
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shift = 8;
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shift = -8;
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size = 2;
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break;
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case 0xd3:
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shift = 8;
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shift = -8;
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size = 1;
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break;
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default: /* bad */
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errx(1, "%s: Unsupported flag: %02x\n", cookie.file.c_str(), flag);
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break;
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}
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data.remove_prefix(4);
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} else {
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assert((flag & ~(0x0f|0x10|0x20|0x80)) == 0);
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unsigned size = 0;
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switch(flag & (0x80 + 0x20)) {
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case 0:
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size = 1;
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@ -230,13 +232,17 @@ void process_reloc(byte_view &data, cookie &cookie) {
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uint32_t value = 0;
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omf::reloc r;
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r.size = size;
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r.offset = cookie.start; /* ???? */
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r.offset = offset; /* ???? */
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r.value = value;
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r.shift = shift;
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seg.relocs.emplace_back(r);
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}
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/* clear out the inline relocation data */
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for(unsigned i = 0; i < size; ++i) {
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seg.data[offset + i] = 0;
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}
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//cookie.zero.emplace_back(std::make_pair(offset, size));
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}
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}
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@ -284,23 +290,24 @@ void process_unit(const std::string &path) {
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errx(1, "Invalid aux type %s", path.c_str());
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}
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omf::segment &seg = segments.back();
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seg.data.insert(seg.data.end(), mf.data(), mf.data() + offset);
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byte_view data(mf.data() + offset, mf.size() - offset);
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cookie.start = seg.data.size();
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cookie.length = offset;
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cookie.file = path;
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seg.data.insert(seg.data.end(), mf.data(), mf.data() + offset);
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byte_view data(mf.data() + offset, mf.size() - offset);
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byte_view rr = data;
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/* skip over the relocation records so we can process the labels first. */
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/* this is so external references can use the global symbol id */
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assert(data.size() >= 2);
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for(;;) {
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assert(data.size() >= 6);
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if (data[0] == 0) break;
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assert(data.size() >= 6);
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data.remove_prefix(4);
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}
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data.remove_prefix(1);
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