mirror of
https://github.com/WinampDesktop/winamp.git
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194 lines
5.6 KiB
C++
194 lines
5.6 KiB
C++
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#include <precomp.h>
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#include <api/script/debugger/disasm.h>
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#include <api/script/opcodes.h>
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#include <api/script/vcpu.h>
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#include <api/script/debugger/sourcecodeline.h>
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// ---------------------------------------------------------------------
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typedef struct {
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const wchar_t *opname;
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unsigned __int8 opval;
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int type;
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} opentry;
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opentry _optable[] = {
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{L"nop", OPCODE_NOP, OPCODE_TYPE_VOID},
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{L"push", OPCODE_PUSH, OPCODE_TYPE_VAR},
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{L"popi", OPCODE_POPI, OPCODE_TYPE_VOID},
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{L"pop", OPCODE_POP, OPCODE_TYPE_VAR},
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{L"set ", OPCODE_SET, OPCODE_TYPE_VOID},
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{L"retf", OPCODE_RETF, OPCODE_TYPE_VOID},
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{L"call", OPCODE_CALLC, OPCODE_TYPE_PTR},
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{L"call", OPCODE_CALLM, OPCODE_TYPE_DLF},
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{L"call", OPCODE_CALLM2, OPCODE_TYPE_NDLF},
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{L"umv", OPCODE_UMV, OPCODE_TYPE_DISCARD},
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{L"cmpeq", OPCODE_CMPEQ, OPCODE_TYPE_VOID},
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{L"cmpne", OPCODE_CMPNE, OPCODE_TYPE_VOID},
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{L"cmpa", OPCODE_CMPA, OPCODE_TYPE_VOID},
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{L"cmpae", OPCODE_CMPAE, OPCODE_TYPE_VOID},
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{L"cmpb", OPCODE_CMPB, OPCODE_TYPE_VOID},
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{L"cmpbe", OPCODE_CMPBE, OPCODE_TYPE_VOID},
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{L"jiz", OPCODE_JIZ, OPCODE_TYPE_PTR},
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{L"jnz", OPCODE_JNZ, OPCODE_TYPE_PTR},
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{L"jmp", OPCODE_JMP, OPCODE_TYPE_PTR},
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{L"incs", OPCODE_INCS, OPCODE_TYPE_VOID},
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{L"decs", OPCODE_DECS, OPCODE_TYPE_VOID},
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{L"incp", OPCODE_INCP, OPCODE_TYPE_VOID},
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{L"decp", OPCODE_DECP, OPCODE_TYPE_VOID},
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{L"add", OPCODE_ADD, OPCODE_TYPE_VOID},
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{L"sub", OPCODE_SUB, OPCODE_TYPE_VOID},
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{L"mul", OPCODE_MUL, OPCODE_TYPE_VOID},
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{L"div", OPCODE_DIV, OPCODE_TYPE_VOID},
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{L"mod", OPCODE_MOD, OPCODE_TYPE_VOID},
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{L"neg", OPCODE_NEG, OPCODE_TYPE_VOID},
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{L"shl", OPCODE_SHL, OPCODE_TYPE_VOID},
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{L"shr", OPCODE_SHR, OPCODE_TYPE_VOID},
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{L"bnot", OPCODE_BNOT, OPCODE_TYPE_VOID},
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{L"bxor", OPCODE_XOR, OPCODE_TYPE_VOID},
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{L"band", OPCODE_AND, OPCODE_TYPE_VOID},
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{L"bor", OPCODE_OR, OPCODE_TYPE_VOID},
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{L"not", OPCODE_NOT, OPCODE_TYPE_VOID},
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{L"and", OPCODE_LAND, OPCODE_TYPE_VOID},
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{L"or", OPCODE_LOR, OPCODE_TYPE_VOID},
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{L"del", OPCODE_DELETE, OPCODE_TYPE_VOID},
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{L"new", OPCODE_NEW, OPCODE_TYPE_CLASSID},
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{L"cmpl", OPCODE_CMPLT, OPCODE_TYPE_VOID},
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};
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int MakiDisassembler::optable[256];
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int MakiDisassembler::optableready = 0;
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MakiDisassembler::MakiDisassembler(int _vcpuid) {
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if (!optableready) {
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MEMSET(optable, 0, sizeof(optable));
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for (int i=0;i<sizeof(_optable)/sizeof(opentry);i++) {
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opentry e = _optable[i];
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optable[e.opval] = i;
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}
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optableready = 1;
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}
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vcpuid = _vcpuid;
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disassemble();
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}
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MakiDisassembler::~MakiDisassembler() {
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lines.deleteAll();
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}
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int MakiDisassembler::getVCPUId() {
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return vcpuid;
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}
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int MakiDisassembler::getNumLines() {
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return lines.getNumItems();
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}
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SourceCodeLine *MakiDisassembler::enumLine(int n) {
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return lines.enumItem(n);
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}
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int MakiDisassembler::findLine(int pointer) {
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int i;
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for (i=0;i<lines.getNumItems();i++) {
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SourceCodeLine *l = lines.enumItem(i);
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int ip = l->getPointer();
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int il = l->getLength();
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if (pointer >= ip && pointer < ip+il) {
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return i;
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}
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}
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return -1;
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}
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void MakiDisassembler::disassemble() {
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int size;
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const char *codeblock = VCPU::getCodeBlock(vcpuid, &size);
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if (codeblock != NULL) {
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const char *p = codeblock;
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unsigned char opcode = OPCODE_NOP;
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while (p < codeblock+size) {
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const char *start_of_instruction = p;
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opcode = *p;
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p+=sizeof(opcode);
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StringW inst;
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int a = optable[opcode];
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int id;
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int size = 0;
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inst = _optable[a].opname;
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switch (_optable[a].type) {
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case OPCODE_TYPE_VOID:
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size = 1;
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break;
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case OPCODE_TYPE_VAR:
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id = *(int *)p; p+=sizeof(int);
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inst += StringPrintfW(L" var %08X", id);
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size = 5;
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break;
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case OPCODE_TYPE_PTR:
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id = *(int *)p; p+=sizeof(int);
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inst += StringPrintfW(L" %08X", id+(p-codeblock));
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size = 5;
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break;
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case OPCODE_TYPE_DLF: {
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id = *(int *)p; p+=sizeof(int);
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int np = *(int *)p;
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if ((np & 0xFFFF0000) == 0xFFFF0000) {
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p+=sizeof(int);
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np &= 0xFFFF;
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} else
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np = -1;
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int i = VCPU::dlfBase(vcpuid)+id;
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if (i != -1) {
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VCPUdlfEntry *e = VCPU::DLFentryTable.enumItem(i);
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if (e != NULL) {
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if (np != -1) inst += StringPrintfW(L"(%d)", np);
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inst += L" ";
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inst += e->functionName;
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}
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}
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size = 5 + ((np == -1) ? 0 : 4);
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break;
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}
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case OPCODE_TYPE_NDLF: {
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id = *(int *)p; p+=sizeof(int);
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int np = *p; p++;
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int i = VCPU::dlfBase(vcpuid)+id;
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if (i != -1) {
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VCPUdlfEntry *e = VCPU::DLFentryTable.enumItem(i);
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if (e != NULL) {
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inst += StringPrintfW(L"(%d) ", np);
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inst += e->functionName;
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}
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}
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size = 6;
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break;
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}
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case OPCODE_TYPE_CLASSID: {
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id = *(int *)p; p+=sizeof(int);
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const wchar_t *cn = WASABI_API_MAKI->vcpu_getClassName(vcpuid, id);
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inst += L" ";
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inst += cn;
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size = 5;
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break;
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}
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case OPCODE_TYPE_DISCARD:
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id = *(int *)p; p+=sizeof(int);
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size = 5;
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break;
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}
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SourceCodeLineI *scl = new SourceCodeLineI();
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scl->setLine(inst),
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scl->setPointer(start_of_instruction-codeblock);
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scl->setLength(size);
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lines.addItem(scl);
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}
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}
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}
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