83 lines
1.3 KiB
C++
83 lines
1.3 KiB
C++
#ifndef __omf_h__
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#define __omf_h__
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#include <stdint.h>
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#include <vector>
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#include <string>
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namespace omf {
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enum opcode : uint8_t {
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END = 0x00,
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// 0x01-0xdf CONST
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ALIGN = 0xe0,
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ORG = 0xe1,
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RELOC = 0xe2,
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INTERSEG = 0xe3,
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USING = 0xe4,
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STRONG = 0xe5,
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GLOBAL = 0xe6,
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GEQU = 0xe7,
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MEM = 0xe8,
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EXPR = 0xeb,
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ZEXPR = 0xec,
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BEXPR = 0xed,
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RELEXPR = 0xee,
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LOCAL = 0xef,
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EQU = 0xf0,
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DS = 0xf1,
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LCONST = 0xf2,
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LEXPR = 0xf3,
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ENTRY = 0xf4,
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cRELOC = 0xf5,
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cINTERSEG = 0xf6,
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SUPER = 0xf7,
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};
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struct reloc {
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uint8_t size = 0;
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uint8_t shift = 0;
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uint32_t offset = 0;
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uint32_t value = 0;
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constexpr bool can_compress() const {
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return offset <= 0xffff && value <= 0xffff;
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}
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};
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struct interseg {
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uint8_t size = 0;
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uint8_t shift = 0;
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uint32_t offset = 0;
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uint16_t file = 1;
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uint16_t segment = 0;
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uint32_t segment_offset = 0;
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constexpr bool can_compress() const {
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return file == 1 && segment <= 255 && offset <= 0xffff && segment_offset <= 0xffff;
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}
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};
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struct segment {
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uint16_t segnum = 0;
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uint16_t kind = 0;
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uint32_t alignment = 0;
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uint32_t reserved_space = 0;
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uint32_t org = 0;
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std::string loadname;
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std::string segname;
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std::vector<uint8_t> data;
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std::vector<interseg> intersegs;
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std::vector<reloc> relocs;
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};
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}
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#endif
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