f7c26e9f7a
1de435ed bf uses Label class 613922bd add Label L() for convenience 43e15583 fix typo 93579ee6 add protect-re.cpp 60004b5c fix url of protect-re.cpp 348b2709 fix typo of doc f34f6ed5 update manual 232110be update test 82b78bf0 add setProtectMode dd8b290f put warning message if pageSize != 4096 64775ca2 a little refactoring 7c3e7b85 fix wrong VSIB encoding with idx >= 16 git-subtree-dir: externals/xbyak git-subtree-split: 1de435ed04c8e74775804da944d176baf0ce56e2
71 lines
1.2 KiB
C++
71 lines
1.2 KiB
C++
#define XBYAK_NO_OP_NAMES
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#include <xbyak/xbyak.h>
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struct Code1 : Xbyak::CodeGenerator {
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Code1()
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: Xbyak::CodeGenerator(4096, Xbyak::DontSetProtectRWE)
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{
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mov(eax, 123);
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ret();
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}
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void update()
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{
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db(0);
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}
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};
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void test1(bool updateCode)
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{
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Code1 c;
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c.setProtectModeRE();
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if (updateCode) c.update(); // segmentation fault
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int (*f)() = c.getCode<int (*)()>();
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printf("f=%d\n", f());
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c.setProtectModeRW();
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c.update();
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puts("ok");
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}
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struct Code2 : Xbyak::CodeGenerator {
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Code2()
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: Xbyak::CodeGenerator(4096, Xbyak::AutoGrow)
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{
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mov(eax, 123);
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ret();
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}
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void update()
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{
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db(0);
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}
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};
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void test2(bool updateCode)
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{
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Code2 c;
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c.readyRE();
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if (updateCode) c.update(); // segmentation fault
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int (*f)() = c.getCode<int (*)()>();
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printf("f=%d\n", f());
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c.setProtectModeRW();
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c.update();
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puts("ok");
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}
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int main(int argc, char *argv[])
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{
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if (argc < 2) {
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fprintf(stderr, "%s <testNum> [update]\n", argv[0]);
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return 0;
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}
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bool update = argc == 3;
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int n = atoi(argv[1]);
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printf("n=%d update=%d\n", n, update);
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switch (n) {
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case 1: test1(update); break;
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case 2: test2(update); break;
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default: fprintf(stderr, "no test %d\n", n); break;
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}
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}
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