mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-05 11:28:26 -05:00
191 lines
3.9 KiB
C++
Executable File
191 lines
3.9 KiB
C++
Executable File
#if defined(_MSC_VER) && (_MSC_VER <= 1200)
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#pragma warning(disable:4514)
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#pragma warning(disable:4786)
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#endif
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#if defined(_MSC_VER) && (_MSC_VER >= 1900)
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#pragma warning(disable:4456)
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#define XBYAK_NO_OP_NAMES
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#include "xbyak/xbyak.h"
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class Sample : public Xbyak::CodeGenerator {
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void operator=(const Sample&);
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public:
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Sample(void *userPtr = 0, size_t size = Xbyak::DEFAULT_MAX_CODE_SIZE) : Xbyak::CodeGenerator(size, userPtr)
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{
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inLocalLabel(); // use local label for multiple instance
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#ifdef XBYAK32
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mov(ecx, ptr [esp + 4]); // n
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#elif defined(XBYAK64_GCC)
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mov(ecx, edi); // n
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#else
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// n = ecx
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#endif
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xor_(eax, eax); // sum
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test(ecx, ecx);
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jz(".exit");
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xor_(edx, edx); // i
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L(".lp");
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add(eax, edx);
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inc(edx);
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cmp(edx, ecx);
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jbe(".lp"); // jmp to previous @@
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L(".exit"); // <B>
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ret();
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outLocalLabel(); // end of local label
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}
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};
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class AddFunc : public Xbyak::CodeGenerator {
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void operator=(const AddFunc&);
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public:
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AddFunc(int y)
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{
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#ifdef XBYAK32
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mov(eax, ptr [esp + 4]);
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add(eax, y);
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#elif defined(XBYAK64_WIN)
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lea(rax, ptr [rcx + y]);
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#else
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lea(eax, ptr [edi + y]);
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#endif
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ret();
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}
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int (*get() const)(int) { return getCode<int(*)(int)>(); }
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};
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class CallAtoi : public Xbyak::CodeGenerator {
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void operator=(const CallAtoi&);
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public:
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CallAtoi()
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{
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#ifdef XBYAK64
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#ifdef XBYAK64_WIN
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sub(rsp, 32); // return-address is destroied if 64bit debug mode
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#endif
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mov(rax, (size_t)atoi);
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call(rax);
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#ifdef XBYAK64_WIN
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add(rsp, 32);
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#endif
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#else
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mov(eax, ptr [esp + 4]);
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push(eax);
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#ifdef XBYAK_VARIADIC_TEMPLATE
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call(atoi);
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#else
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call(reinterpret_cast<const void*>(atoi));
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#endif
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add(esp, 4);
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#endif
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ret();
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}
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int (*get() const)(const char *) { return getCode<int (*)(const char *)>(); }
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};
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class JmpAtoi : public Xbyak::CodeGenerator {
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void operator=(const JmpAtoi&);
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public:
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JmpAtoi()
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{
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/* already pushed "456" */
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#ifdef XBYAK64
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mov(rax, (size_t)atoi);
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jmp(rax);
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#else
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jmp(reinterpret_cast<const void*>(atoi));
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#endif
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}
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int (*get() const)(const char *) { return getCode<int (*)(const char *)>(); }
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};
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struct Reset : public Xbyak::CodeGenerator {
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void init(int n)
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{
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xor_(eax, eax);
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mov(ecx, n);
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test(ecx, ecx);
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jnz("@f");
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ret();
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L("@@");
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for (int i = 0; i < 10 - n; i++) {
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add(eax, ecx);
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}
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sub(ecx, 1);
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jnz("@b");
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ret();
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}
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};
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void testReset()
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{
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puts("testReset");
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Reset code;
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int (*f)(int) = code.getCode<int(*)(int)>();
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for (int i = 0; i < 10; i++) {
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code.init(i);
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int v = f(i);
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printf("%d %d\n", i, v);
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code.reset();
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}
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}
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int main()
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{
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try {
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Sample s;
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printf("Xbyak version=%s\n", s.getVersionString());
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#ifdef XBYAK64_GCC
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puts("64bit mode(gcc)");
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#elif defined(XBYAK64_WIN)
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puts("64bit mode(win)");
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#else
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puts("32bit");
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#endif
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int (*func)(int) = s.getCode<int (*)(int)>();
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for (int i = 0; i <= 10; i++) {
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printf("0 + ... + %d = %d\n", i, func(i));
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}
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for (int i = 0; i < 10; i++) {
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AddFunc a(i);
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int (*add)(int) = a.get();
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int y = add(i);
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printf("%d + %d = %d\n", i, i, y);
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}
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CallAtoi c;
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printf("call atoi(\"123\") = %d\n", c.get()("123"));
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JmpAtoi j;
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printf("jmp atoi(\"456\") = %d\n", j.get()("456"));
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{
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// use memory allocated by user
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using namespace Xbyak;
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const size_t codeSize = 4096;
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uint8 buf[codeSize + 16];
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uint8 *p = CodeArray::getAlignedAddress(buf);
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Sample s(p, codeSize);
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if (!CodeArray::protect(p, codeSize, CodeArray::PROTECT_RWE)) {
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fprintf(stderr, "can't protect\n");
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return 1;
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}
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int (*func)(int) = s.getCode<int (*)(int)>();
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const uint8 *funcp = reinterpret_cast<const uint8*>(func);
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if (funcp != p) {
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fprintf(stderr, "internal error %p %p\n", p, funcp);
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return 1;
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}
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printf("0 + ... + %d = %d\n", 100, func(100));
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CodeArray::protect(p, codeSize, CodeArray::PROTECT_RW);
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}
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puts("OK");
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testReset();
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} catch (std::exception& e) {
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printf("ERR:%s\n", e.what());
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} catch (...) {
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printf("unknown error\n");
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}
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}
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