qemu/tests/test-i386.c

#include <stdlib.h>
#include <stdio.h>
#include <math.h>

#define xglue(x, y) x ## y
#define glue(x, y) xglue(x, y)
#define stringify(s)	tostring(s)
#define tostring(s)	#s

#define CC_C   	0x0001
#define CC_P 	0x0004
#define CC_A	0x0010
#define CC_Z	0x0040
#define CC_S    0x0080
#define CC_O    0x0800

#define __init_call	__attribute__ ((unused,__section__ (".initcall.init")))

static void *call_start __init_call = NULL;

#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)

#define OP add
#include "test-i386.h"

#define OP sub
#include "test-i386.h"

#define OP xor
#include "test-i386.h"

#define OP and
#include "test-i386.h"

#define OP or
#include "test-i386.h"

#define OP cmp
#include "test-i386.h"

#define OP adc
#define OP_CC
#include "test-i386.h"

#define OP sbb
#define OP_CC
#include "test-i386.h"

#define OP inc
#define OP_CC
#define OP1
#include "test-i386.h"

#define OP dec
#define OP_CC
#define OP1
#include "test-i386.h"

#define OP neg
#define OP_CC
#define OP1
#include "test-i386.h"

#define OP not
#define OP_CC
#define OP1
#include "test-i386.h"

#undef CC_MASK
#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O)

#define OP shl
#include "test-i386-shift.h"

#define OP shr
#include "test-i386-shift.h"

#define OP sar
#include "test-i386-shift.h"

#define OP rol
#include "test-i386-shift.h"

#define OP ror
#include "test-i386-shift.h"

#define OP rcr
#define OP_CC
#include "test-i386-shift.h"

#define OP rcl
#define OP_CC
#include "test-i386-shift.h"

#define OP shld
#define OP_SHIFTD
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP shrd
#define OP_SHIFTD
#define OP_NOBYTE
#include "test-i386-shift.h"

/* XXX: should be more precise ? */
#undef CC_MASK
#define CC_MASK (CC_C)

#define OP bt
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP bts
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP btr
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP btc
#define OP_NOBYTE
#include "test-i386-shift.h"

/* lea test (modrm support) */
#define TEST_LEA(STR)\
{\
    asm("leal " STR ", %0"\
        : "=r" (res)\
        : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\
    printf("lea %s = %08x\n", STR, res);\
}

#define TEST_LEA16(STR)\
{\
    asm(".code16 ; .byte 0x67 ; leal " STR ", %0 ; .code32"\
        : "=wq" (res)\
        : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\
    printf("lea %s = %08x\n", STR, res);\
}


void test_lea(void)
{
    int eax, ebx, ecx, edx, esi, edi, res;
    eax = 0x0001;
    ebx = 0x0002;
    ecx = 0x0004;
    edx = 0x0008;
    esi = 0x0010;
    edi = 0x0020;

    TEST_LEA("0x4000");

    TEST_LEA("(%%eax)");
    TEST_LEA("(%%ebx)");
    TEST_LEA("(%%ecx)");
    TEST_LEA("(%%edx)");
    TEST_LEA("(%%esi)");
    TEST_LEA("(%%edi)");

    TEST_LEA("0x40(%%eax)");
    TEST_LEA("0x40(%%ebx)");
    TEST_LEA("0x40(%%ecx)");
    TEST_LEA("0x40(%%edx)");
    TEST_LEA("0x40(%%esi)");
    TEST_LEA("0x40(%%edi)");

    TEST_LEA("0x4000(%%eax)");
    TEST_LEA("0x4000(%%ebx)");
    TEST_LEA("0x4000(%%ecx)");
    TEST_LEA("0x4000(%%edx)");
    TEST_LEA("0x4000(%%esi)");
    TEST_LEA("0x4000(%%edi)");

    TEST_LEA("(%%eax, %%ecx)");
    TEST_LEA("(%%ebx, %%edx)");
    TEST_LEA("(%%ecx, %%ecx)");
    TEST_LEA("(%%edx, %%ecx)");
    TEST_LEA("(%%esi, %%ecx)");
    TEST_LEA("(%%edi, %%ecx)");

    TEST_LEA("0x40(%%eax, %%ecx)");
    TEST_LEA("0x4000(%%ebx, %%edx)");

    TEST_LEA("(%%ecx, %%ecx, 2)");
    TEST_LEA("(%%edx, %%ecx, 4)");
    TEST_LEA("(%%esi, %%ecx, 8)");

    TEST_LEA("(,%%eax, 2)");
    TEST_LEA("(,%%ebx, 4)");
    TEST_LEA("(,%%ecx, 8)");

    TEST_LEA("0x40(,%%eax, 2)");
    TEST_LEA("0x40(,%%ebx, 4)");
    TEST_LEA("0x40(,%%ecx, 8)");


    TEST_LEA("-10(%%ecx, %%ecx, 2)");
    TEST_LEA("-10(%%edx, %%ecx, 4)");
    TEST_LEA("-10(%%esi, %%ecx, 8)");

    TEST_LEA("0x4000(%%ecx, %%ecx, 2)");
    TEST_LEA("0x4000(%%edx, %%ecx, 4)");
    TEST_LEA("0x4000(%%esi, %%ecx, 8)");

    /* limited 16 bit addressing test */
    TEST_LEA16("0x4000");
    TEST_LEA16("(%%bx)");
    TEST_LEA16("(%%si)");
    TEST_LEA16("(%%di)");
    TEST_LEA16("0x40(%%bx)");
    TEST_LEA16("0x40(%%si)");
    TEST_LEA16("0x40(%%di)");
    TEST_LEA16("0x4000(%%bx)");
    TEST_LEA16("0x4000(%%si)");
    TEST_LEA16("(%%bx,%%si)");
    TEST_LEA16("(%%bx,%%di)");
    TEST_LEA16("0x40(%%bx,%%si)");
    TEST_LEA16("0x40(%%bx,%%di)");
    TEST_LEA16("0x4000(%%bx,%%si)");
    TEST_LEA16("0x4000(%%bx,%%di)");
}

#define TEST_JCC(JCC, v1, v2)\
{\
    asm("movl $1, %0\n\t"\
        "cmpl %2, %1\n\t"\
        JCC " 1f\n\t"\
        "movl $0, %0\n\t"\
        "1:\n\t"\
        : "=r" (res)\
        : "r" (v1), "r" (v2));\
    printf("%-10s %d\n", JCC, res);\
}

/* various jump tests */
void test_jcc(void)
{
    int res;

    TEST_JCC("jne", 1, 1);
    TEST_JCC("jne", 1, 0);

    TEST_JCC("je", 1, 1);
    TEST_JCC("je", 1, 0);

    TEST_JCC("jl", 1, 1);
    TEST_JCC("jl", 1, 0);
    TEST_JCC("jl", 1, -1);

    TEST_JCC("jle", 1, 1);
    TEST_JCC("jle", 1, 0);
    TEST_JCC("jle", 1, -1);

    TEST_JCC("jge", 1, 1);
    TEST_JCC("jge", 1, 0);
    TEST_JCC("jge", -1, 1);

    TEST_JCC("jg", 1, 1);
    TEST_JCC("jg", 1, 0);
    TEST_JCC("jg", 1, -1);

    TEST_JCC("jb", 1, 1);
    TEST_JCC("jb", 1, 0);
    TEST_JCC("jb", 1, -1);

    TEST_JCC("jbe", 1, 1);
    TEST_JCC("jbe", 1, 0);
    TEST_JCC("jbe", 1, -1);

    TEST_JCC("jae", 1, 1);
    TEST_JCC("jae", 1, 0);
    TEST_JCC("jae", 1, -1);

    TEST_JCC("ja", 1, 1);
    TEST_JCC("ja", 1, 0);
    TEST_JCC("ja", 1, -1);


    TEST_JCC("jp", 1, 1);
    TEST_JCC("jp", 1, 0);

    TEST_JCC("jnp", 1, 1);
    TEST_JCC("jnp", 1, 0);

    TEST_JCC("jo", 0x7fffffff, 0);
    TEST_JCC("jo", 0x7fffffff, -1);

    TEST_JCC("jno", 0x7fffffff, 0);
    TEST_JCC("jno", 0x7fffffff, -1);

    TEST_JCC("js", 0, 1);
    TEST_JCC("js", 0, -1);
    TEST_JCC("js", 0, 0);

    TEST_JCC("jns", 0, 1);
    TEST_JCC("jns", 0, -1);
    TEST_JCC("jns", 0, 0);
}

#undef CC_MASK
#define CC_MASK (CC_O | CC_C)

#define OP mul
#include "test-i386-muldiv.h"

#define OP imul
#include "test-i386-muldiv.h"

#undef CC_MASK
#define CC_MASK (0)

#define OP div
#include "test-i386-muldiv.h"

#define OP idiv
#include "test-i386-muldiv.h"

void test_imulw2(int op0, int op1) 
{
    int res, s1, s0, flags;
    s0 = op0;
    s1 = op1;
    res = s0;
    flags = 0;
    asm ("push %4\n\t"
         "popf\n\t"
         "imulw %w2, %w0\n\t" 
         "pushf\n\t"
         "popl %1\n\t"
         : "=q" (res), "=g" (flags)
         : "q" (s1), "0" (res), "1" (flags));
    printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
           "imulw", s0, s1, res, flags & CC_MASK);
}

void test_imull2(int op0, int op1) 
{
    int res, s1, s0, flags;
    s0 = op0;
    s1 = op1;
    res = s0;
    flags = 0;
    asm ("push %4\n\t"
         "popf\n\t"
         "imull %2, %0\n\t" 
         "pushf\n\t"
         "popl %1\n\t"
         : "=q" (res), "=g" (flags)
         : "q" (s1), "0" (res), "1" (flags));
    printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
           "imull", s0, s1, res, flags & CC_MASK);
}

void test_mul(void)
{
    test_imulb(0x1234561d, 4);
    test_imulb(3, -4);
    test_imulb(0x80, 0x80);
    test_imulb(0x10, 0x10);

    test_imulw(0, 0x1234001d, 45);
    test_imulw(0, 23, -45);
    test_imulw(0, 0x8000, 0x8000);
    test_imulw(0, 0x100, 0x100);

    test_imull(0, 0x1234001d, 45);
    test_imull(0, 23, -45);
    test_imull(0, 0x80000000, 0x80000000);
    test_imull(0, 0x10000, 0x10000);

    test_mulb(0x1234561d, 4);
    test_mulb(3, -4);
    test_mulb(0x80, 0x80);
    test_mulb(0x10, 0x10);

    test_mulw(0, 0x1234001d, 45);
    test_mulw(0, 23, -45);
    test_mulw(0, 0x8000, 0x8000);
    test_mulw(0, 0x100, 0x100);

    test_mull(0, 0x1234001d, 45);
    test_mull(0, 23, -45);
    test_mull(0, 0x80000000, 0x80000000);
    test_mull(0, 0x10000, 0x10000);

    test_imulw2(0x1234001d, 45);
    test_imulw2(23, -45);
    test_imulw2(0x8000, 0x8000);
    test_imulw2(0x100, 0x100);

    test_imull2(0x1234001d, 45);
    test_imull2(23, -45);
    test_imull2(0x80000000, 0x80000000);
    test_imull2(0x10000, 0x10000);

    test_idivb(0x12341678, 0x127e);
    test_idivb(0x43210123, -5);
    test_idivb(0x12340004, -1);

    test_idivw(0, 0x12345678, 12347);
    test_idivw(0, -23223, -45);
    test_idivw(0, 0x12348000, -1);
    test_idivw(0x12343, 0x12345678, 0x81238567);

    test_idivl(0, 0x12345678, 12347);
    test_idivl(0, -233223, -45);
    test_idivl(0, 0x80000000, -1);
    test_idivl(0x12343, 0x12345678, 0x81234567);

    test_divb(0x12341678, 0x127e);
    test_divb(0x43210123, -5);
    test_divb(0x12340004, -1);

    test_divw(0, 0x12345678, 12347);
    test_divw(0, -23223, -45);
    test_divw(0, 0x12348000, -1);
    test_divw(0x12343, 0x12345678, 0x81238567);

    test_divl(0, 0x12345678, 12347);
    test_divl(0, -233223, -45);
    test_divl(0, 0x80000000, -1);
    test_divl(0x12343, 0x12345678, 0x81234567);
}

#define TEST_BSX(op, size, op0)\
{\
    int res, val, resz;\
    val = op0;\
    asm("xorl %1, %1 ; " #op " %" size "2, %" size "0 ; setz %b1" \
        : "=r" (res), "=q" (resz)\
        : "g" (val));\
    printf("%-10s A=%08x R=%08x %d\n", #op, val, resz ? 0 : res, resz);\
}

void test_bsx(void)
{
    TEST_BSX(bsrw, "w", 0);
    TEST_BSX(bsrw, "w", 0x12340128);
    TEST_BSX(bsrl, "", 0);
    TEST_BSX(bsrl, "", 0x00340128);
    TEST_BSX(bsfw, "w", 0);
    TEST_BSX(bsfw, "w", 0x12340128);
    TEST_BSX(bsfl, "", 0);
    TEST_BSX(bsfl, "", 0x00340128);
}

void test_fops(double a, double b)
{
    printf("a=%f b=%f a+b=%f\n", a, b, a + b);
    printf("a=%f b=%f a-b=%f\n", a, b, a - b);
    printf("a=%f b=%f a*b=%f\n", a, b, a * b);
    printf("a=%f b=%f a/b=%f\n", a, b, a / b);
    printf("a=%f b=%f fmod(a, b)=%f\n", a, b, fmod(a, b));
    printf("a=%f sqrt(a)=%f\n", a, sqrt(a));
    printf("a=%f sin(a)=%f\n", a, sin(a));
    printf("a=%f cos(a)=%f\n", a, cos(a));
    printf("a=%f tan(a)=%f\n", a, tan(a));
    printf("a=%f log(a)=%f\n", a, log(a));
    printf("a=%f exp(a)=%f\n", a, exp(a));
    printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b));
    /* just to test some op combining */
    printf("a=%f asin(sin(a))=%f\n", a, asin(sin(a)));
    printf("a=%f acos(cos(a))=%f\n", a, acos(cos(a)));
    printf("a=%f atan(tan(a))=%f\n", a, atan(tan(a)));

}

void test_fcmp(double a, double b)
{
    printf("(%f<%f)=%d\n",
           a, b, a < b);
    printf("(%f<=%f)=%d\n",
           a, b, a <= b);
    printf("(%f==%f)=%d\n",
           a, b, a == b);
    printf("(%f>%f)=%d\n",
           a, b, a > b);
    printf("(%f<=%f)=%d\n",
           a, b, a >= b);
}

void test_fcvt(double a)
{
    float fa;
    long double la;

    fa = a;
    la = a;
    printf("(float)%f = %f\n", a, fa);
    printf("(long double)%f = %Lf\n", a, la);
    printf("a=%016Lx\n", *(long long *)&a);
    printf("la=%016Lx %04x\n", *(long long *)&la, 
           *(unsigned short *)((char *)(&la) + 8));
    printf("a=%f floor(a)=%f\n", a, floor(a));
    printf("a=%f ceil(a)=%f\n", a, ceil(a));
    printf("a=%f rint(a)=%f\n", a, rint(a));
}

#define TEST(N) \
    asm("fld" #N : "=t" (a)); \
    printf("fld" #N "= %f\n", a);

void test_fconst(void)
{
    double a;
    TEST(1);
    TEST(l2t);
    TEST(l2e);
    TEST(pi);
    TEST(lg2);
    TEST(ln2);
    TEST(z);
}

void test_fbcd(double a)
{
    unsigned short bcd[5];
    double b;

    asm("fbstp %0" : "=m" (bcd[0]) : "t" (a) : "st");
    asm("fbld %1" : "=t" (b) : "m" (bcd[0]));
    printf("a=%f bcd=%04x%04x%04x%04x%04x b=%f\n", 
           a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b);
}

void test_floats(void)
{
    test_fops(2, 3);
    test_fops(1.4, -5);
    test_fcmp(2, -1);
    test_fcmp(2, 2);
    test_fcmp(2, 3);
    test_fcvt(1.0/7.0);
    test_fcvt(-1.0/9.0);
    test_fcvt(1e30);
    test_fconst();
    test_fbcd(1234567890123456);
    test_fbcd(-123451234567890);
}

static void *call_end __init_call = NULL;

int main(int argc, char **argv)
{
    void **ptr;
    void (*func)(void);

    ptr = &call_start + 1;
    while (*ptr != NULL) {
        func = *ptr++;
        func();
    }
    test_bsx();
    test_mul();
    test_jcc();
    test_lea();
    test_floats();
    return 0;
}