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yuzu/externals/xbyak/test/jmp.cpp

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early-access version 1255
2020-12-28 19:15:37 +04:00
#include <stdio.h>
#include <string.h>
#include <string>
#define XBYAK_NO_OP_NAMES
#include <xbyak/xbyak.h>
#include <cybozu/inttype.hpp>
#include <cybozu/test.hpp>
using namespace Xbyak;
void putNop(Xbyak::CodeGenerator *gen, int n)
{
for (int i = 0; i < n; i++) {
gen->nop();
}
}
void diff(const std::string& a, const std::string& b)
{
if (a == b) return;
if (a.size() != b.size()) printf("size diff %d %d\n", (int)a.size(), (int)b.size());
for (size_t i = 0; i < (std::min)(a.size(), b.size()); i++) {
if (a[i] != b[i]) {
printf("diff %d(%04x) %02x %02x\n", (int)i, (int)i, (unsigned char)a[i], (unsigned char)b[i]);
}
}
}
void dump(const std::string& m)
{
printf("size=%d\n ", (int)m.size());
for (int i = 0; i < 16; i++) {
printf("%02x ", i);
}
printf("\n ");
for (int i = 0; i < 16; i++) {
printf("---");
}
printf("\n");
for (size_t i = 0; i < m.size(); i++) {
if ((i % 16) == 0) printf("%04x ", (int)(i / 16));
printf("%02x ", (unsigned char)m[i]);
if ((i % 16) == 15) putchar('\n');
}
putchar('\n');
}
CYBOZU_TEST_AUTO(test1)
{
struct TestJmp : public Xbyak::CodeGenerator {
/*
4 X0:
5 00000004 EBFE jmp short X0
6
7 X1:
8 00000006 <res 00000001> dummyX1 resb 1
9 00000007 EBFD jmp short X1
10
11 X126:
12 00000009 <res 0000007E> dummyX126 resb 126
13 00000087 EB80 jmp short X126
14
15 X127:
16 00000089 <res 0000007F> dummyX127 resb 127
17 00000108 E97CFFFFFF jmp near X127
18
19 0000010D EB00 jmp short Y0
20 Y0:
21
22 0000010F EB01 jmp short Y1
23 00000111 <res 00000001> dummyY1 resb 1
24 Y1:
25
26 00000112 EB7F jmp short Y127
27 00000114 <res 0000007F> dummyY127 resb 127
28 Y127:
29
30 00000193 E980000000 jmp near Y128
31 00000198 <res 00000080> dummyY128 resb 128
32 Y128:
*/
TestJmp(int offset, bool isBack, bool isShort, bool useNewLabel)
{
if (useNewLabel) {
Label label;
if (isBack) {
L(label);
putNop(this, offset);
jmp(label);
} else {
if (isShort) {
jmp(label);
} else {
jmp(label, T_NEAR);
}
putNop(this, offset);
L(label);
}
} else {
if (isBack) {
L("@@");
putNop(this, offset);
jmp("@b");
} else {
if (isShort) {
jmp("@f");
} else {
jmp("@f", T_NEAR);
}
putNop(this, offset);
L("@@");
}
}
}
};
static const struct Tbl {
int offset;
bool isBack;
bool isShort;
uint8 result[6];
int size;
} tbl[] = {
{ 0, true, true, { 0xeb, 0xfe }, 2 },
{ 1, true, true, { 0xeb, 0xfd }, 2 },
{ 126, true, true, { 0xeb, 0x80 }, 2 },
{ 127, true, false, {0xe9, 0x7c, 0xff, 0xff, 0xff }, 5 },
{ 0, false, true, { 0xeb, 0x00 }, 2 },
{ 1, false, true, { 0xeb, 0x01 }, 2 },
{ 127, false, true, { 0xeb, 0x7f }, 2 },
{ 128, false, false, { 0xe9, 0x80, 0x00, 0x00, 0x00 }, 5 },
};
for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
const Tbl *p = &tbl[i];
for (int k = 0; k < 2; k++) {
TestJmp jmp(p->offset, p->isBack, p->isShort, k == 0);
const uint8 *q = (const uint8*)jmp.getCode();
if (p->isBack) q += p->offset; /* skip nop */
for (int j = 0; j < p->size; j++) {
CYBOZU_TEST_EQUAL(q[j], p->result[j]);
}
}
}
}
CYBOZU_TEST_AUTO(testJmpCx)
{
struct TestJmpCx : public CodeGenerator {
explicit TestJmpCx(void *p, bool useNewLabel)
: Xbyak::CodeGenerator(16, p)
{
if (useNewLabel) {
Label lp;
L(lp);
#ifdef XBYAK64
/*
67 E3 FD ; jecxz lp
E3 FB ; jrcxz lp
*/
jecxz(lp);
jrcxz(lp);
#else
/*
E3FE ; jecxz lp
67E3FB ; jcxz lp
*/
jecxz(lp);
jcxz(lp);
#endif
} else {
inLocalLabel();
L(".lp");
#ifdef XBYAK64
/*
67 E3 FD ; jecxz lp
E3 FB ; jrcxz lp
*/
jecxz(".lp");
jrcxz(".lp");
#else
/*
E3FE ; jecxz lp
67E3FB ; jcxz lp
*/
jecxz(".lp");
jcxz(".lp");
#endif
outLocalLabel();
}
}
};
const struct {
const char *p;
size_t len;
} tbl = {
#ifdef XBYAK64
"\x67\xe3\xfd\xe3\xfb", 5
#else
"\xe3\xfe\x67\xe3\xfb", 5
#endif
};
for (int j = 0; j < 2; j++) {
char buf[16] = {};
TestJmpCx code(buf, j == 0);
CYBOZU_TEST_EQUAL(memcmp(buf, tbl.p, tbl.len), 0);
}
}
CYBOZU_TEST_AUTO(loop)
{
const uint8 ok[] = {
// lp:
0x31, 0xC0, // xor eax, eax
0xE2, 0xFC, // loop lp
0xE0, 0xFA, // loopne lp
0xE1, 0xF8, // loope lp
};
struct Code : CodeGenerator {
Code(bool useLabel)
{
if (useLabel) {
Xbyak::Label lp = L();
xor_(eax, eax);
loop(lp);
loopne(lp);
loope(lp);
} else {
L("@@");
xor_(eax, eax);
loop("@b");
loopne("@b");
loope("@b");
}
}
};
Code code1(false);
CYBOZU_TEST_EQUAL(code1.getSize(), sizeof(ok));
CYBOZU_TEST_EQUAL_ARRAY(code1.getCode(), ok, sizeof(ok));
Code code2(true);
CYBOZU_TEST_EQUAL(code2.getSize(), sizeof(ok));
CYBOZU_TEST_EQUAL_ARRAY(code2.getCode(), ok, sizeof(ok));
}
#ifdef _MSC_VER
#pragma warning(disable : 4310)
#endif
CYBOZU_TEST_AUTO(test2)
{
struct TestJmp2 : public CodeGenerator {
/*
1 00000000 90 nop
2 00000001 90 nop
3 f1:
4 00000002 <res 0000007E> dummyX1 resb 126
6 00000080 EB80 jmp f1
7
8 f2:
9 00000082 <res 0000007F> dummyX2 resb 127
11 00000101 E97CFFFFFF jmp f2
12
13
14 00000106 EB7F jmp f3
15 00000108 <res 0000007F> dummyX3 resb 127
17 f3:
18
19 00000187 E980000000 jmp f4
20 0000018C <res 00000080> dummyX4 resb 128
22 f4:
*/
TestJmp2(void *p, bool useNewLabel)
: Xbyak::CodeGenerator(8192, p)
{
if (useNewLabel) {
inLocalLabel();
nop();
nop();
L(".f1");
putNop(this, 126);
jmp(".f1");
L(".f2");
putNop(this, 127);
jmp(".f2", T_NEAR);
jmp(".f3");
putNop(this, 127);
L(".f3");
jmp(".f4", T_NEAR);
putNop(this, 128);
L(".f4");
outLocalLabel();
} else {
nop();
nop();
Label f1, f2, f3, f4;
L(f1);
putNop(this, 126);
jmp(f1);
L(f2);
putNop(this, 127);
jmp(f2, T_NEAR);
jmp(f3);
putNop(this, 127);
L(f3);
jmp(f4, T_NEAR);
putNop(this, 128);
L(f4);
}
}
};
std::string ok;
ok.resize(0x18C + 128, (char)0x90);
ok[0x080] = (char)0xeb;
ok[0x081] = (char)0x80;
ok[0x101] = (char)0xe9;
ok[0x102] = (char)0x7c;
ok[0x103] = (char)0xff;
ok[0x104] = (char)0xff;
ok[0x105] = (char)0xff;
ok[0x106] = (char)0xeb;
ok[0x107] = (char)0x7f;
ok[0x187] = (char)0xe9;
ok[0x188] = (char)0x80;
ok[0x189] = (char)0x00;
ok[0x18a] = (char)0x00;
ok[0x18b] = (char)0x00;
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 2; j++) {
TestJmp2 c(i == 0 ? 0 : Xbyak::AutoGrow, j == 0);
c.ready();
std::string m((const char*)c.getCode(), c.getSize());
CYBOZU_TEST_EQUAL(m, ok);
}
}
}
#ifdef XBYAK32
int add5(int x) { return x + 5; }
int add2(int x) { return x + 2; }
CYBOZU_TEST_AUTO(test3)
{
struct Grow : Xbyak::CodeGenerator {
Grow(int dummySize)
: Xbyak::CodeGenerator(128, Xbyak::AutoGrow)
{
mov(eax, 100);
push(eax);
call((void*)add5);
add(esp, 4);
push(eax);
call((void*)add2);
add(esp, 4);
ret();
for (int i = 0; i < dummySize; i++) {
db(0);
}
}
};
for (int dummySize = 0; dummySize < 40000; dummySize += 10000) {
printf("dummySize=%d\n", dummySize);
Grow g(dummySize);
g.ready();
int (*f)() = (int (*)())g.getCode();
int x = f();
const int ok = 107;
CYBOZU_TEST_EQUAL(x, ok);
}
}
#endif
Xbyak::uint8 bufL[4096 * 32];
Xbyak::uint8 bufS[4096 * 2];
struct MyAllocator : Xbyak::Allocator {
Xbyak::uint8 *alloc(size_t size)
{
if (size < sizeof(bufS)) {
printf("test use bufS(%d)\n", (int)size);
return bufS;
}
if (size < sizeof(bufL)) {
printf("test use bufL(%d)\n", (int)size);
return bufL;
}
fprintf(stderr, "no memory %d\n", (int)size);
exit(1);
}
void free(Xbyak::uint8 *)
{
}
} myAlloc;
CYBOZU_TEST_AUTO(test4)
{
struct Test4 : Xbyak::CodeGenerator {
Test4(int size, void *mode, bool useNewLabel)
: CodeGenerator(size, mode)
{
if (useNewLabel) {
Label x;
jmp(x);
putNop(this, 10);
L(x);
ret();
} else {
inLocalLabel();
jmp(".x");
putNop(this, 10);
L(".x");
ret();
outLocalLabel();
}
}
};
for (int i = 0; i < 2; i++) {
const bool useNewLabel = i == 0;
std::string fm, gm;
Test4 fc(1024, 0, useNewLabel);
Test4 gc(5, Xbyak::AutoGrow, !useNewLabel);
gc.ready();
fm.assign((const char*)fc.getCode(), fc.getSize());
gm.assign((const char*)gc.getCode(), gc.getSize());
CYBOZU_TEST_EQUAL(fm, gm);
}
}
#ifndef __APPLE__
CYBOZU_TEST_AUTO(test5)
{
struct Test5 : Xbyak::CodeGenerator {
explicit Test5(int size, int count, void *mode)
: CodeGenerator(size, mode, &myAlloc)
{
using namespace Xbyak;
inLocalLabel();
mov(ecx, count);
xor_(eax, eax);
L(".lp");
for (int i = 0; i < count; i++) {
L(Label::toStr(i));
add(eax, 1);
int to = 0;
if (i < count / 2) {
to = count - 1 - i;
} else {
to = count - i;
}
if (i == count / 2) {
jmp(".exit", T_NEAR);
} else {
jmp(Label::toStr(to), T_NEAR);
}
}
L(".exit");
sub(ecx, 1);
jnz(".lp", T_NEAR);
ret();
outLocalLabel();
}
};
std::string fm, gm;
const int count = 50;
int ret;
Test5 fc(1024 * 64, count, 0);
ret = ((int (*)())fc.getCode())();
CYBOZU_TEST_EQUAL(ret, count * count);
fm.assign((const char*)fc.getCode(), fc.getSize());
Test5 gc(10, count, Xbyak::AutoGrow);
gc.ready();
ret = ((int (*)())gc.getCode())();
CYBOZU_TEST_EQUAL(ret, count * count);
gm.assign((const char*)gc.getCode(), gc.getSize());
CYBOZU_TEST_EQUAL(fm, gm);
}
#endif
size_t getValue(const uint8* p)
{
size_t v = 0;
for (size_t i = 0; i < sizeof(size_t); i++) {
v |= size_t(p[i]) << (i * 8);
}
return v;
}
void checkAddr(const uint8 *p, size_t offset, size_t expect)
{
size_t v = getValue(p + offset);
CYBOZU_TEST_EQUAL(v, size_t(p) + expect);
}
CYBOZU_TEST_AUTO(MovLabel)
{
struct MovLabelCode : Xbyak::CodeGenerator {
MovLabelCode(bool grow, bool useNewLabel)
: Xbyak::CodeGenerator(grow ? 128 : 4096, grow ? Xbyak::AutoGrow : 0)
{
#ifdef XBYAK64
const Reg64& a = rax;
#else
const Reg32& a = eax;
#endif
if (useNewLabel) {
nop(); // 0x90
Label lp1, lp2;
L(lp1);
nop();
mov(a, lp1); // 0xb8 + <4byte> / 0x48bb + <8byte>
nop();
mov(a, lp2); // 0xb8
// force realloc if AutoGrow
putNop(this, 256);
nop();
L(lp2);
} else {
inLocalLabel();
nop(); // 0x90
L(".lp1");
nop();
mov(a, ".lp1"); // 0xb8 + <4byte> / 0x48bb + <8byte>
nop();
mov(a, ".lp2"); // 0xb8
// force realloc if AutoGrow
putNop(this, 256);
nop();
L(".lp2");
outLocalLabel();
}
}
};
const struct {
int pos;
uint8 ok;
} tbl[] = {
#ifdef XBYAK32
{ 0x00, 0x90 },
// lp1:0x001
{ 0x001, 0x90 },
{ 0x002, 0xb8 },
// 0x003
{ 0x007, 0x90 },
{ 0x008, 0xb8 },
// 0x009
{ 0x10d, 0x90 },
// lp2:0x10e
#else
{ 0x000, 0x90 },
// lp1:0x001
{ 0x001, 0x90 },
{ 0x002, 0x48 },
{ 0x003, 0xb8 },
// 0x004
{ 0x00c, 0x90 },
{ 0x00d, 0x48 },
{ 0x00e, 0xb8 },
// 0x00f
{ 0x117, 0x90 },
// lp2:0x118
#endif
};
for (int j = 0; j < 2; j++) {
const bool grow = j == 0;
for (int k = 0; k < 2; k++) {
const bool useNewLabel = k == 0;
MovLabelCode code(grow, useNewLabel);
if (grow) code.ready();
const uint8* const p = code.getCode();
for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
int pos = tbl[i].pos;
uint8 x = p[pos];
uint8 ok = tbl[i].ok;
CYBOZU_TEST_EQUAL(x, ok);
}
#ifdef XBYAK32
checkAddr(p, 0x03, 0x001);
checkAddr(p, 0x09, 0x10e);
#else
checkAddr(p, 0x04, 0x001);
checkAddr(p, 0x0f, 0x118);
#endif
}
}
}
CYBOZU_TEST_AUTO(testMovLabel2)
{
struct MovLabel2Code : Xbyak::CodeGenerator {
MovLabel2Code()
{
#ifdef XBYAK64
const Reg64& a = rax;
const Reg64& c = rcx;
#else
const Reg32& a = eax;
const Reg32& c = ecx;
#endif
xor_(a, a);
xor_(c, c);
jmp("in");
ud2();
L("@@"); // L1
add(a, 2);
mov(c, "@f");
jmp(c); // goto L2
ud2();
L("in");
mov(c, "@b");
add(a, 1);
jmp(c); // goto L1
ud2();
L("@@"); // L2
add(a, 4);
ret();
}
};
MovLabel2Code code;
int ret = code.getCode<int (*)()>()();
CYBOZU_TEST_EQUAL(ret, 7);
}
CYBOZU_TEST_AUTO(testF_B)
{
struct Code : Xbyak::CodeGenerator {
Code(int type)
{
inLocalLabel();
xor_(eax, eax);
switch (type) {
case 0:
L("@@");
inc(eax);
cmp(eax, 1);
je("@b");
break;
case 1:
test(eax, eax);
jz("@f");
ud2();
L("@@");
break;
case 2:
L("@@");
inc(eax);
cmp(eax, 1); // 1, 2
je("@b");
cmp(eax, 2); // 2, 3
je("@b");
break;
case 3:
L("@@");
inc(eax);
cmp(eax, 1); // 1, 2
je("@b");
cmp(eax, 2); // 2, 3
je("@b");
jmp("@f");
ud2();
L("@@");
break;
case 4:
L("@@");
inc(eax);
cmp(eax, 1); // 1, 2
je("@b");
cmp(eax, 2); // 2, 3
je("@b");
jmp("@f");
ud2();
L("@@");
inc(eax); // 4, 5
cmp(eax, 4);
je("@b");
break;
case 5:
L("@@");
L("@@");
inc(eax);
cmp(eax, 1);
je("@b");
break;
case 6:
L("@@");
L("@@");
L("@@");
inc(eax);
cmp(eax, 1);
je("@b");
break;
case 7:
jmp("@f");
L("@@");
inc(eax); // 1, 2
cmp(eax, 1);
je("@b");
cmp(eax, 2);
jne("@f"); // not jmp
inc(eax); // 3
L("@@");
inc(eax); // 4, 5, 6
cmp(eax, 4);
je("@b");
cmp(eax, 5);
je("@b");
jmp("@f");
jmp("@f");
jmp("@b");
L("@@");
break;
}
ret();
outLocalLabel();
}
};
const int expectedTbl[] = {
2, 0, 3, 3, 5, 2, 2, 6
};
for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(expectedTbl); i++) {
Code code((int)i);
int ret = code.getCode<int (*)()>()();
CYBOZU_TEST_EQUAL(ret, expectedTbl[i]);
}
}
CYBOZU_TEST_AUTO(test6)
{
struct TestLocal : public Xbyak::CodeGenerator {
TestLocal(bool grow)
: Xbyak::CodeGenerator(grow ? 128 : 4096, grow ? Xbyak::AutoGrow : 0)
{
xor_(eax, eax);
inLocalLabel();
jmp("start0", T_NEAR);
L(".back");
inc(eax); // 8
jmp(".next", T_NEAR);
L("start2");
inc(eax); // 7
jmp(".back", T_NEAR);
inLocalLabel();
L(".back");
inc(eax); // 5
putNop(this, 128);
jmp(".next", T_NEAR);
L("start1");
inc(eax); // 4
jmp(".back", T_NEAR);
inLocalLabel();
L(".back");
inc(eax); // 2
jmp(".next", T_NEAR);
L("start0");
inc(eax); // 1
jmp(".back", T_NEAR);
L(".next");
inc(eax); // 3
jmp("start1", T_NEAR);
outLocalLabel();
L(".next");
inc(eax); // 6
jmp("start2", T_NEAR);
outLocalLabel();
L(".next");
inc(eax); // 9
jmp("start3", T_NEAR);
inLocalLabel();
L(".back");
inc(eax); // 14
jmp("exit", T_NEAR);
L("start4");
inc(eax); // 13
jmp(".back", T_NEAR);
outLocalLabel();
L("start3");
inc(eax); // 10
inLocalLabel();
jmp(".next", T_NEAR);
L(".back");
inc(eax); // 12
jmp("start4", T_NEAR);
L(".next");
inc(eax); // 11
jmp(".back", T_NEAR);
outLocalLabel();
outLocalLabel();
L("exit");
inc(eax); // 15
ret();
}
};
for (int i = 0; i < 2; i++) {
const bool grow = i == 1;
printf("test6 grow=%d\n", i);
TestLocal code(grow);
if (grow) code.ready();
int (*f)() = code.getCode<int (*)()>();
int a = f();
CYBOZU_TEST_EQUAL(a, 15);
}
}
CYBOZU_TEST_AUTO(test_jcc)
{
struct A : Xbyak::CodeGenerator {
A()
{
add(eax, 5);
ret();
}
};
struct B : Xbyak::CodeGenerator {
B(bool grow, const void *p) : Xbyak::CodeGenerator(grow ? 0 : 4096, grow ? Xbyak::AutoGrow : 0)
{
mov(eax, 1);
add(eax, 2);
jnz(p);
}
};
A a;
const void *p = a.getCode<const void*>();
for (int i = 0; i < 2; i++) {
bool grow = i == 1;
B b(grow, p);
if (grow) {
b.ready();
}
int (*f)() = b.getCode<int (*)()>();
CYBOZU_TEST_EQUAL(f(), 8);
}
}
CYBOZU_TEST_AUTO(testNewLabel)
{
struct Code : Xbyak::CodeGenerator {
Code(bool grow)
: Xbyak::CodeGenerator(grow ? 128 : 4096, grow ? Xbyak::AutoGrow : 0)
{
xor_(eax, eax);
{
Label label1;
Label label2;
Label label3;
Label label4;
Label exit;
jmp(label1, T_NEAR);
L(label2);
inc(eax); // 2
jmp(label3, T_NEAR);
L(label4);
inc(eax); // 4
jmp(exit, T_NEAR);
putNop(this, 128);
L(label3);
inc(eax); // 3
jmp(label4, T_NEAR);
L(label1);
inc(eax); // 1
jmp(label2, T_NEAR);
L(exit);
}
{
Label label1;
Label label2;
Label label3;
Label label4;
Label exit;
jmp(label1);
L(label2);
inc(eax); // 6
jmp(label3);
L(label4);
inc(eax); // 8
jmp(exit);
L(label3);
inc(eax); // 7
jmp(label4);
L(label1);
inc(eax); // 5
jmp(label2);
L(exit);
}
Label callLabel;
{ // eax == 8
Label label1;
Label label2;
L(label1);
inc(eax); // 9, 10, 11, 13
cmp(eax, 9);
je(label1);
// 10, 11, 13
inc(eax); // 11, 12, 13
cmp(eax, 11);
je(label1);
// 12, 13
cmp(eax, 12);
je(label2);
inc(eax); // 14
cmp(eax, 14);
je(label2);
ud2();
L(label2); // 14
inc(eax); // 13, 15
cmp(eax, 13);
je(label1);
}
call(callLabel);
ret();
L(callLabel);
inc(eax); // 16
ret();
}
};
for (int i = 0; i < 2; i++) {
const bool grow = i == 1;
printf("testNewLabel grow=%d\n", grow);
Code code(grow);
if (grow) code.ready();
int (*f)() = code.getCode<int (*)()>();
int r = f();
CYBOZU_TEST_EQUAL(r, 16);
}
}
CYBOZU_TEST_AUTO(returnLabel)
{
struct Code : Xbyak::CodeGenerator {
Code()
{
xor_(eax, eax);
Label L1 = L();
test(eax, eax);
Label exit;
jnz(exit);
inc(eax); // 1
Label L2;
call(L2);
jmp(L1);
L(L2);
inc(eax); // 2
ret();
L(exit);
inc(eax); // 3
ret();
}
};
Code code;
int (*f)() = code.getCode<int (*)()>();
int r = f();
CYBOZU_TEST_EQUAL(r, 3);
}
CYBOZU_TEST_AUTO(testAssign)
{
struct Code : Xbyak::CodeGenerator {
Code(bool grow)
: Xbyak::CodeGenerator(grow ? 128 : 4096, grow ? Xbyak::AutoGrow : 0)
{
xor_(eax, eax);
Label dst, src;
L(src);
inc(eax);
cmp(eax, 1);
je(dst);
inc(eax); // 2, 3, 5
cmp(eax, 5);
putNop(this, 128);
jne(dst, T_NEAR);
ret();
assignL(dst, src);
// test of copy label
{
Label sss(dst);
{
Label ttt;
ttt = src;
}
}
}
};
for (int i = 0; i < 2; i++) {
const bool grow = i == 0;
printf("testAssign grow=%d\n", grow);
Code code(grow);
if (grow) code.ready();
int (*f)() = code.getCode<int (*)()>();
int ret = f();
CYBOZU_TEST_EQUAL(ret, 5);
}
}
CYBOZU_TEST_AUTO(doubleDefine)
{
struct Code : Xbyak::CodeGenerator {
Code()
{
{
Label label;
L(label);
// forbitten double L()
CYBOZU_TEST_EXCEPTION(L(label), Xbyak::Error);
}
{
Label label;
jmp(label);
CYBOZU_TEST_ASSERT(hasUndefinedLabel());
}
{
Label label1, label2;
L(label1);
jmp(label2);
assignL(label2, label1);
// forbitten double assignL
CYBOZU_TEST_EXCEPTION(assignL(label2, label1), Xbyak::Error);
}
{
Label label1, label2;
L(label1);
jmp(label2);
// forbitten assignment to label1 set by L()
CYBOZU_TEST_EXCEPTION(assignL(label1, label2), Xbyak::Error);
}
}
} code;
}
struct GetAddressCode1 : Xbyak::CodeGenerator {
void test()
{
Xbyak::Label L1, L2, L3;
nop();
L(L1);
const uint8_t *p1 = getCurr();
CYBOZU_TEST_EQUAL_POINTER(L1.getAddress(), p1);
nop();
jmp(L2);
nop();
jmp(L3);
L(L2);
CYBOZU_TEST_EQUAL_POINTER(L2.getAddress(), getCurr());
// L3 is not defined
CYBOZU_TEST_EQUAL_POINTER(L3.getAddress(), 0);
// L3 is set by L1
assignL(L3, L1);
CYBOZU_TEST_EQUAL_POINTER(L3.getAddress(), p1);
}
};
struct CodeLabelTable : Xbyak::CodeGenerator {
enum { ret0 = 3 };
enum { ret1 = 5 };
enum { ret2 = 8 };
CodeLabelTable()
{
using namespace Xbyak;
#ifdef XBYAK64_WIN
const Reg64& p0 = rcx;
const Reg64& a = rax;
#elif defined (XBYAK64_GCC)
const Reg64& p0 = rdi;
const Reg64& a = rax;
#else
const Reg32& p0 = edx;
const Reg32& a = eax;
mov(edx, ptr [esp + 4]);
#endif
Label labelTbl, L0, L1, L2;
mov(a, labelTbl);
jmp(ptr [a + p0 * sizeof(void*)]);
L(labelTbl);
putL(L0);
putL(L1);
putL(L2);
L(L0);
mov(a, ret0);
ret();
L(L1);
mov(a, ret1);
ret();
L(L2);
mov(a, ret2);
ret();
}
};
CYBOZU_TEST_AUTO(LabelTable)
{
CodeLabelTable c;
int (*f)(int) = c.getCode<int (*)(int)>();
CYBOZU_TEST_EQUAL(f(0), c.ret0);
CYBOZU_TEST_EQUAL(f(1), c.ret1);
CYBOZU_TEST_EQUAL(f(2), c.ret2);
}
CYBOZU_TEST_AUTO(getAddress1)
{
GetAddressCode1 c;
c.test();
}
struct GetAddressCode2 : Xbyak::CodeGenerator {
Xbyak::Label L1, L2, L3;
size_t a1;
size_t a3;
explicit GetAddressCode2(int size)
: Xbyak::CodeGenerator(size, size == 4096 ? 0 : Xbyak::AutoGrow)
, a1(0)
, a3(0)
{
bool autoGrow = size != 4096;
nop();
L(L1);
if (autoGrow) {
CYBOZU_TEST_EQUAL_POINTER(L1.getAddress(), 0);
}
a1 = getSize();
nop();
jmp(L2);
if (autoGrow) {
CYBOZU_TEST_EQUAL_POINTER(L2.getAddress(), 0);
}
L(L3);
a3 = getSize();
if (autoGrow) {
CYBOZU_TEST_EQUAL_POINTER(L3.getAddress(), 0);
}
nop();
assignL(L2, L1);
if (autoGrow) {
CYBOZU_TEST_EQUAL_POINTER(L2.getAddress(), 0);
}
}
};
CYBOZU_TEST_AUTO(getAddress2)
{
const int sizeTbl[] = {
2, 128, // grow
4096 // not grow
};
for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(sizeTbl); i++) {
int size = sizeTbl[i];
GetAddressCode2 c(size);
c.ready();
const uint8_t *p = c.getCode();
CYBOZU_TEST_EQUAL(c.L1.getAddress(), p + c.a1);
CYBOZU_TEST_EQUAL(c.L3.getAddress(), p + c.a3);
CYBOZU_TEST_EQUAL(c.L2.getAddress(), p + c.a1);
}
}
#ifdef XBYAK64
CYBOZU_TEST_AUTO(rip)
{
int a[] = { 1, 10 };
int b[] = { 100, 1000 };
struct Code : Xbyak::CodeGenerator {
Code(const int *a, const int *b)
{
Label label1, label2;
jmp("@f");
L(label1);
db(a[0], 4);
db(a[1], 4);
L("@@");
mov(eax, ptr [rip + label1]); // a[0]
mov(ecx, ptr [rip + label1+4]); // a[1]
mov(edx, ptr [rip + label2-8+2+6]); // b[0]
add(ecx, ptr [rip + 16+label2-12]); // b[1]
add(eax, ecx);
add(eax, edx);
ret();
L(label2);
db(b[0], 4);
db(b[1], 4);
// error
CYBOZU_TEST_EXCEPTION(rip + label1 + label2, Xbyak::Error);
}
} code(a, b);
int ret = code.getCode<int (*)()>()();
CYBOZU_TEST_EQUAL(ret, a[0] + a[1] + b[0] + b[1]);
}
int ret1234()
{
return 1234;
}
int ret9999()
{
return 9999;
}
CYBOZU_TEST_AUTO(rip_jmp)
{
struct Code : Xbyak::CodeGenerator {
Code()
{
Label label;
xor_(eax, eax);
call(ptr [rip + label]);
mov(ecx, eax);
call(ptr [rip + label + 8]);
add(eax, ecx);
ret();
L(label);
db((size_t)ret1234, 8);
db((size_t)ret9999, 8);
}
} code;
int ret = code.getCode<int (*)()>()();
CYBOZU_TEST_EQUAL(ret, ret1234() + ret9999());
}
#if 0
CYBOZU_TEST_AUTO(rip_addr)
{
/*
we can't assume |&x - &code| < 2GiB anymore
*/
static int x = 5;
struct Code : Xbyak::CodeGenerator {
Code()
{
mov(eax, 123);
mov(ptr[rip + &x], eax);
ret();
}
} code;
code.getCode<void (*)()>()();
CYBOZU_TEST_EQUAL(x, 123);
}
#endif
#ifndef __APPLE__
CYBOZU_TEST_AUTO(rip_addr_with_fixed_buf)
{
MIE_ALIGN(4096) static char buf[8192];
static char *p = buf + 4096;
static int *x0 = (int*)buf;
static int *x1 = x0 + 1;
struct Code : Xbyak::CodeGenerator {
Code() : Xbyak::CodeGenerator(4096, p)
{
mov(eax, 123);
mov(ptr[rip + x0], eax);
mov(dword[rip + x1], 456);
mov(byte[rip + 1 + x1 + 3], 99);
ret();
}
} code;
code.setProtectModeRE();
code.getCode<void (*)()>()();
CYBOZU_TEST_EQUAL(*x0, 123);
CYBOZU_TEST_EQUAL(*x1, 456);
CYBOZU_TEST_EQUAL(buf[8], 99);
code.setProtectModeRW();
}
#endif
#endif
struct ReleaseTestCode : Xbyak::CodeGenerator {
ReleaseTestCode(Label& L1, Label& L2, Label& L3)
{
L(L1);
jmp(L1);
L(L2);
jmp(L3); // not assigned
}
};
/*
code must unlink label if code is destroyed
*/
CYBOZU_TEST_AUTO(release_label_after_code)
{
puts("---");
{
Label L1, L2, L3, L4, L5;
{
ReleaseTestCode code(L1, L2, L3);
CYBOZU_TEST_ASSERT(L1.getId() > 0);
CYBOZU_TEST_ASSERT(L1.getAddress() != 0);
CYBOZU_TEST_ASSERT(L2.getId() > 0);
CYBOZU_TEST_ASSERT(L2.getAddress() != 0);
CYBOZU_TEST_ASSERT(L3.getId() > 0);
CYBOZU_TEST_ASSERT(L3.getAddress() == 0); // L3 is not assigned
code.assignL(L4, L1);
L5 = L1;
printf("id=%d %d %d %d %d\n", L1.getId(), L2.getId(), L3.getId(), L4.getId(), L5.getId());
}
puts("code is released");
CYBOZU_TEST_ASSERT(L1.getId() == 0);
CYBOZU_TEST_ASSERT(L1.getAddress() == 0);
CYBOZU_TEST_ASSERT(L2.getId() == 0);
CYBOZU_TEST_ASSERT(L2.getAddress() == 0);
// CYBOZU_TEST_ASSERT(L3.getId() == 0); // L3 is not assigned so not cleared
CYBOZU_TEST_ASSERT(L3.getAddress() == 0);
CYBOZU_TEST_ASSERT(L4.getId() == 0);
CYBOZU_TEST_ASSERT(L4.getAddress() == 0);
CYBOZU_TEST_ASSERT(L5.getId() == 0);
CYBOZU_TEST_ASSERT(L5.getAddress() == 0);
printf("id=%d %d %d %d %d\n", L1.getId(), L2.getId(), L3.getId(), L4.getId(), L5.getId());
}
}
struct JmpTypeCode : Xbyak::CodeGenerator {
void nops()
{
for (int i = 0; i < 130; i++) {
nop();
}
}
// return jmp code size
size_t gen(bool pre, bool large, Xbyak::CodeGenerator::LabelType type)
{
Label label;
if (pre) {
L(label);
if (large) nops();
size_t pos = getSize();
jmp(label, type);
return getSize() - pos;
} else {
size_t pos = getSize();
jmp(label, type);
size_t size = getSize() - pos;
if (large) nops();
L(label);
return size;
}
}
};
CYBOZU_TEST_AUTO(setDefaultJmpNEAR)
{
const Xbyak::CodeGenerator::LabelType T_SHORT = Xbyak::CodeGenerator::T_SHORT;
const Xbyak::CodeGenerator::LabelType T_NEAR = Xbyak::CodeGenerator::T_NEAR;
const Xbyak::CodeGenerator::LabelType T_AUTO = Xbyak::CodeGenerator::T_AUTO;
const struct {
bool pre;
bool large;
Xbyak::CodeGenerator::LabelType type;
size_t expect1; // 0 means exception
size_t expect2;
} tbl[] = {
{ false, false, T_SHORT, 2, 2 },
{ false, false, T_NEAR, 5, 5 },
{ false, true, T_SHORT, 0, 0 },
{ false, true, T_NEAR, 5, 5 },
{ true, false, T_SHORT, 2, 2 },
{ true, false, T_NEAR, 5, 5 },
{ true, true, T_SHORT, 0, 0 },
{ true, true, T_NEAR, 5, 5 },
{ false, false, T_AUTO, 2, 5 },
{ false, true, T_AUTO, 0, 5 },
{ true, false, T_AUTO, 2, 2 },
{ true, true, T_AUTO, 5, 5 },
};
JmpTypeCode code1, code2;
code2.setDefaultJmpNEAR(true);
for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
if (tbl[i].expect1) {
size_t size = code1.gen(tbl[i].pre, tbl[i].large, tbl[i].type);
CYBOZU_TEST_EQUAL(size, tbl[i].expect1);
} else {
CYBOZU_TEST_EXCEPTION(code1.gen(tbl[i].pre, tbl[i].large, tbl[i].type), std::exception);
}
if (tbl[i].expect2) {
size_t size = code2.gen(tbl[i].pre, tbl[i].large, tbl[i].type);
CYBOZU_TEST_EQUAL(size, tbl[i].expect2);
} else {
CYBOZU_TEST_EXCEPTION(code2.gen(tbl[i].pre, tbl[i].large, tbl[i].type), std::exception);
}
}
}
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