jcxz/jecxz support new Label

This commit is contained in:
MITSUNARI Shigeo 2014-03-15 16:18:37 +09:00
parent abae0742fb
commit 59f4d082fc
3 changed files with 327 additions and 285 deletions

View file

@ -49,6 +49,7 @@ std::string type2String(int type)
void put_jREGz(const char *reg, bool prefix)
{
printf("void j%sz(const std::string& label) { %sopJmp(label, T_SHORT, 0xe3, 0, 0); }\n", reg, prefix ? "db(0x67); " : "");
printf("void j%sz(Label& label) { %sopJmp(label, T_SHORT, 0xe3, 0, 0); }\n", reg, prefix ? "db(0x67); " : "");
}
void put()

View file

@ -16,8 +16,12 @@ void putNop(Xbyak::CodeGenerator *gen, int n)
gen->nop();
}
}
struct TestJmp : public Xbyak::CodeGenerator {
/*
void test1()
{
puts("test1");
struct TestJmp : public Xbyak::CodeGenerator {
/*
4 X0:
5 00000004 EBFE jmp short X0
6
@ -47,9 +51,25 @@ struct TestJmp : public Xbyak::CodeGenerator {
30 00000193 E980000000 jmp near Y128
31 00000198 <res 00000080> dummyY128 resb 128
32 Y128:
*/
TestJmp(int offset, bool isBack, bool isShort)
*/
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);
@ -64,11 +84,8 @@ struct TestJmp : public Xbyak::CodeGenerator {
L("@@");
}
}
};
void test1()
{
puts("test1");
}
};
static const struct Tbl {
int offset;
bool isBack;
@ -87,65 +104,47 @@ void test1()
};
for (size_t i = 0; i < NUM_OF_ARRAY(tbl); i++) {
const Tbl *p = &tbl[i];
TestJmp jmp(p->offset, p->isBack, p->isShort);
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++) {
if (q[j] != p->result[j]) {
printf("err (%d,%d) %02x assume=%02x\n", (int)i, j, q[j], p->result[j]);
printf("err (%d, %d, %d) %02x assume=%02x\n", (int)i, k, j, q[j], p->result[j]);
}
}
}
}
}
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:
*/
explicit TestJmp2(void *p)
: Xbyak::CodeGenerator(8192, p)
{
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();
}
};
struct TestJmpCx : public CodeGenerator {
explicit TestJmpCx(void *p)
void testJmpCx()
{
puts("testJmpCx");
struct TestJmpCx : public CodeGenerator {
explicit TestJmpCx(void *p, bool useNewLabel)
: Xbyak::CodeGenerator(16, p)
{
if (useNewLabel) {
Label lp;
L(lp);
#ifdef XBYAK64
puts("TestJmpCx 64bit");
/*
67 E3 FD ; jecxz lp
E3 FB ; jrcxz lp
*/
jecxz(lp);
jrcxz(lp);
#else
puts("TestJmpCx 32bit");
/*
E3FE ; jecxz lp
67E3FB ; jcxz lp
*/
jecxz(lp);
jcxz(lp);
#endif
} else {
inLocalLabel();
L(".lp");
#ifdef XBYAK64
@ -167,11 +166,8 @@ struct TestJmpCx : public CodeGenerator {
#endif
outLocalLabel();
}
};
void testJmpCx()
{
puts("testJmpCx");
}
};
const struct {
const char *p;
size_t len;
@ -182,16 +178,18 @@ void testJmpCx()
"\xe3\xfe\x67\xe3\xfb", 5
#endif
};
for (int j = 0; j < 2; j++) {
char buf[16] = {};
TestJmpCx code(buf);
TestJmpCx code(buf, j == 0);
if (memcmp(buf, tbl.p, tbl.len) == 0) {
} else {
puts("ng");
printf("err %d\n", j);
for (int i = 0; i < 8; i++) {
printf("%02x ", (unsigned char)buf[i]);
}
printf("\n");
}
}
}
#ifdef _MSC_VER
@ -200,6 +198,50 @@ void testJmpCx()
void test2()
{
puts("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:
*/
explicit TestJmp2(void *p)
: Xbyak::CodeGenerator(8192, p)
{
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();
}
};
std::string ok;
ok.resize(0x18C + 128, (char)0x90);
ok[0x080] = (char)0xeb;
@ -241,7 +283,10 @@ void test2()
int add5(int x) { return x + 5; }
int add2(int x) { return x + 2; }
struct Grow : Xbyak::CodeGenerator {
void test3()
{
puts("test3");
struct Grow : Xbyak::CodeGenerator {
Grow(int dummySize)
: Xbyak::CodeGenerator(128, Xbyak::AutoGrow)
{
@ -257,11 +302,7 @@ struct Grow : Xbyak::CodeGenerator {
db(0);
}
}
};
void test3()
{
puts("test3");
};
for (int dummySize = 0; dummySize < 40000; dummySize += 10000) {
printf("dummySize=%d\n", dummySize);
Grow g(dummySize);
@ -327,7 +368,10 @@ void diff(const std::string& a, const std::string& b)
}
}
struct Test4 : Xbyak::CodeGenerator {
void test4()
{
puts("test4");
struct Test4 : Xbyak::CodeGenerator {
explicit Test4(int size, void *mode)
: CodeGenerator(size, mode)
{
@ -341,10 +385,7 @@ struct Test4 : Xbyak::CodeGenerator {
L(".x");
ret();
}
};
void test4()
{
puts("test4");
};
std::string fm, gm;
Test4 fc(1024, 0);
Test4 gc(5, Xbyak::AutoGrow);
@ -356,7 +397,10 @@ void test4()
diff(gm, gm);
}
struct Test5 : Xbyak::CodeGenerator {
void test5()
{
puts("test5");
struct Test5 : Xbyak::CodeGenerator {
explicit Test5(int size, int count, void *mode)
: CodeGenerator(size, mode, &myAlloc)
{
@ -386,11 +430,7 @@ struct Test5 : Xbyak::CodeGenerator {
ret();
outLocalLabel();
}
};
void test5()
{
puts("test5");
};
std::string fm, gm;
const int count = 50;
int ret;
@ -509,16 +549,19 @@ void testMovLabel(bool grow)
#endif
}
struct MovLabel2Code : Xbyak::CodeGenerator {
void testMovLabel2()
{
puts("tsetMovLabel2");
struct MovLabel2Code : Xbyak::CodeGenerator {
MovLabel2Code()
{
#ifdef XBYAK64
#ifdef XBYAK64
const Reg64& a = rax;
const Reg64& c = rcx;
#else
#else
const Reg32& a = eax;
const Reg32& c = ecx;
#endif
#endif
xor(a, a);
xor(c, c);
jmp("in");
@ -537,17 +580,15 @@ struct MovLabel2Code : Xbyak::CodeGenerator {
add(a, 4);
ret();
}
};
void testMovLabel2()
{
puts("tsetMovLabel2");
};
MovLabel2Code code;
int ret = code.getCode<int (*)()>()();
if (ret != 7) printf("ERR=%d\n", ret);
}
struct TestLocal : public Xbyak::CodeGenerator {
void test6()
{
struct TestLocal : public Xbyak::CodeGenerator {
TestLocal(bool grow)
: Xbyak::CodeGenerator(grow ? 128 : 4096, grow ? Xbyak::AutoGrow : 0)
{
@ -610,10 +651,8 @@ struct TestLocal : public Xbyak::CodeGenerator {
inc(eax); // 15
ret();
}
};
};
void test6()
{
for (int i = 0; i < 2; i++) {
const bool grow = i == 1;
printf("test6 grow=%d\n", i);
@ -695,7 +734,6 @@ void testNewLabel()
int main()
try {
#if 0
test1();
test2();
#ifdef ONLY_32BIT
@ -708,7 +746,6 @@ try {
testMovLabel(false);
testMovLabel(true);
testMovLabel2();
#endif
testNewLabel();
} catch (std::exception& e) {
printf("ERR:%s\n", e.what());

View file

@ -304,10 +304,14 @@ void jg(Label& label, LabelType type = T_AUTO) { opJmp(label, type, 0x7F, 0x8F,
void setg(const Operand& op) { opR_ModM(op, 8, 0, 0x0F, B10010000 | 15); }
#ifdef XBYAK32
void jcxz(const std::string& label) { db(0x67); opJmp(label, T_SHORT, 0xe3, 0, 0); }
void jcxz(Label& label) { db(0x67); opJmp(label, T_SHORT, 0xe3, 0, 0); }
void jecxz(const std::string& label) { opJmp(label, T_SHORT, 0xe3, 0, 0); }
void jecxz(Label& label) { opJmp(label, T_SHORT, 0xe3, 0, 0); }
#else
void jecxz(const std::string& label) { db(0x67); opJmp(label, T_SHORT, 0xe3, 0, 0); }
void jecxz(Label& label) { db(0x67); opJmp(label, T_SHORT, 0xe3, 0, 0); }
void jrcxz(const std::string& label) { opJmp(label, T_SHORT, 0xe3, 0, 0); }
void jrcxz(Label& label) { opJmp(label, T_SHORT, 0xe3, 0, 0); }
#endif
#ifdef XBYAK64
void cdqe() { db(0x48); db(0x98); }