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56 lines
1.3 KiB
56 lines
1.3 KiB
// See LICENSE for license details.
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// This little program finds occurrences of strings like
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// DASM(ffabc013)
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// in its input, then replaces them with the disassembly
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// enclosed hexadecimal number, interpreted as a RISC-V
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// instruction.
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#include "disasm.h"
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#include "extension.h"
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#include <iostream>
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#include <string>
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#include <cstdint>
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#include <fesvr/option_parser.h>
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using namespace std;
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int main(int argc, char** argv)
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{
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string s;
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disassembler_t d;
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std::function<extension_t*()> extension;
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option_parser_t parser;
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parser.option(0, "extension", 1, [&](const char* s){extension = find_extension(s);});
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parser.parse(argv);
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if (extension) {
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for (auto disasm_insn : extension()->get_disasms())
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d.add_insn(disasm_insn);
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}
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while (getline(cin, s))
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{
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for (size_t start = 0; (start = s.find("DASM(", start)) != string::npos; )
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{
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size_t end = s.find(')', start);
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if (end == string::npos)
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break;
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char* endp;
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size_t numstart = start + strlen("DASM(");
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int64_t bits = strtoull(&s[numstart], &endp, 16);
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size_t nbits = 4 * (endp - &s[numstart]);
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if (nbits < 64)
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bits = bits << (64 - nbits) >> (64 - nbits);
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string dis = d.disassemble(bits);
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s = s.substr(0, start) + dis + s.substr(end+1);
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start += dis.length();
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}
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cout << s << '\n';
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}
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return 0;
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}
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