Archipelago » qemu

/*

 *  x86 CPU test

 * 

 *  Copyright (c) 2003 Fabrice Bellard

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

#define _GNU_SOURCE

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <inttypes.h>

#include <math.h>

#include <signal.h>

#include <setjmp.h>

#include <errno.h>

#include <sys/ucontext.h>

#include <sys/mman.h>

#include <asm/vm86.h>

#define TEST_CMOV  0

#define TEST_FCOMI 0

//#define LINUX_VM86_IOPL_FIX

//#define TEST_P4_FLAGS

#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)\

{\

    int res;\

    asm("movl $1, %0\n\t"\

        "cmpl %2, %1\n\t"\

        "j" JCC " 1f\n\t"\

        "movl $0, %0\n\t"\

        "1:\n\t"\

        : "=r" (res)\

        : "r" (v1), "r" (v2));\

    printf("%-10s %d\n", "j" JCC, res);\

\

    asm("movl $0, %0\n\t"\

        "cmpl %2, %1\n\t"\

        "set" JCC " %b0\n\t"\

        : "=r" (res)\

        : "r" (v1), "r" (v2));\

    printf("%-10s %d\n", "set" JCC, res);\

 if (TEST_CMOV) {\

    asm("movl $0x12345678, %0\n\t"\

        "cmpl %2, %1\n\t"\

        "cmov" JCC "l %3, %0\n\t"\

        : "=r" (res)\

        : "r" (v1), "r" (v2), "m" (1));\

        printf("%-10s R=0x%08x\n", "cmov" JCC "l", res);\

    asm("movl $0x12345678, %0\n\t"\

        "cmpl %2, %1\n\t"\

        "cmov" JCC "w %w3, %w0\n\t"\

        : "=r" (res)\

        : "r" (v1), "r" (v2), "r" (1));\

        printf("%-10s R=0x%08x\n", "cmov" JCC "w", res);\

 } \

}

/* various jump tests */

void test_jcc(void)

{

    TEST_JCC("ne", 1, 1);

    TEST_JCC("ne", 1, 0);

    TEST_JCC("e", 1, 1);

    TEST_JCC("e", 1, 0);

    TEST_JCC("l", 1, 1);

    TEST_JCC("l", 1, 0);

    TEST_JCC("l", 1, -1);

    TEST_JCC("le", 1, 1);

    TEST_JCC("le", 1, 0);

    TEST_JCC("le", 1, -1);

    TEST_JCC("ge", 1, 1);

    TEST_JCC("ge", 1, 0);

    TEST_JCC("ge", -1, 1);

    TEST_JCC("g", 1, 1);

    TEST_JCC("g", 1, 0);

    TEST_JCC("g", 1, -1);

    TEST_JCC("b", 1, 1);

    TEST_JCC("b", 1, 0);

    TEST_JCC("b", 1, -1);

    TEST_JCC("be", 1, 1);

    TEST_JCC("be", 1, 0);

    TEST_JCC("be", 1, -1);

    TEST_JCC("ae", 1, 1);

    TEST_JCC("ae", 1, 0);

    TEST_JCC("ae", 1, -1);

    TEST_JCC("a", 1, 1);

    TEST_JCC("a", 1, 0);

    TEST_JCC("a", 1, -1);

    TEST_JCC("p", 1, 1);

    TEST_JCC("p", 1, 0);

    TEST_JCC("np", 1, 1);

    TEST_JCC("np", 1, 0);

    TEST_JCC("o", 0x7fffffff, 0);

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

    TEST_JCC("no", 0x7fffffff, 0);

    TEST_JCC("no", 0x7fffffff, -1);

    TEST_JCC("s", 0, 1);

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

    TEST_JCC("s", 0, 0);

    TEST_JCC("ns", 0, 1);

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

    TEST_JCC("ns", 0, 0);

}

#undef CC_MASK

#ifdef TEST_P4_FLAGS

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

#else

#define CC_MASK (CC_O | CC_C)

#endif

#define OP mul

#include "test-i386-muldiv.h"

#define OP imul

#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);

}

#define TEST_IMUL_IM(size, size1, op0, op1)\

{\

    int res, flags;\

    flags = 0;\

    res = 0;\

    asm ("push %3\n\t"\

         "popf\n\t"\

         "imul" size " $" #op0 ", %" size1 "2, %" size1 "0\n\t" \

         "pushf\n\t"\

         "popl %1\n\t"\

         : "=r" (res), "=g" (flags)\

         : "r" (op1), "1" (flags), "0" (res));\

    printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",\

           "imul" size, op0, op1, res, flags & CC_MASK);\

}

#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_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_IMUL_IM("w", "w", 45, 0x1234);

    TEST_IMUL_IM("w", "w", -45, 23);

    TEST_IMUL_IM("w", "w", 0x8000, 0x80000000);

    TEST_IMUL_IM("w", "w", 0x7fff, 0x1000);

    TEST_IMUL_IM("l", "", 45, 0x1234);

    TEST_IMUL_IM("l", "", -45, 23);

    TEST_IMUL_IM("l", "", 0x8000, 0x80000000);

    TEST_IMUL_IM("l", "", 0x7fff, 0x1000);

    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\n"\

        "movl $0x12345678, %0\n"\

        #op " %" size "2, %" size "0 ; setz %b1" \

        : "=r" (res), "=q" (resz)\

        : "g" (val));\

    printf("%-10s A=%08x R=%08x %d\n", #op, val, 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);

    if (TEST_FCOMI) {

        unsigned int eflags;

        /* test f(u)comi instruction */

        asm("fcomi %2, %1\n"

            "pushf\n"

            "pop %0\n"

            : "=r" (eflags)

            : "t" (a), "u" (b));

        printf("fcomi(%f %f)=%08x\n", a, b, eflags & (CC_Z | CC_P | CC_C));

    }

}

void test_fcvt(double a)

{

    float fa;

    long double la;

    int16_t fpuc;

    int i;

    int64_t lla;

    int ia;

    int16_t wa;

    double ra;

    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));

    /* test all roundings */

    asm volatile ("fstcw %0" : "=m" (fpuc));

    for(i=0;i<4;i++) {

        asm volatile ("fldcw %0" : : "m" ((fpuc & ~0x0c00) | (i << 10)));

        asm volatile ("fist %0" : "=m" (wa) : "t" (a));

        asm volatile ("fistl %0" : "=m" (ia) : "t" (a));

        asm volatile ("fistpll %0" : "=m" (lla) : "t" (a) : "st");

        asm volatile ("frndint ; fstl %0" : "=m" (ra) : "t" (a));

        asm volatile ("fldcw %0" : : "m" (fpuc));

        printf("(short)a = %d\n", wa);

        printf("(int)a = %d\n", ia);

        printf("(int64_t)a = %Ld\n", lla);

        printf("rint(a) = %f\n", ra);

    }

}

#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);

}

#define TEST_ENV(env, save, restore)\

{\

    memset((env), 0xaa, sizeof(*(env)));\

    for(i=0;i<5;i++)\

        asm volatile ("fldl %0" : : "m" (dtab[i]));\

    asm(save " %0\n" : : "m" (*(env)));\

    asm(restore " %0\n": : "m" (*(env)));\

    for(i=0;i<5;i++)\

        asm volatile ("fstpl %0" : "=m" (rtab[i]));\

    for(i=0;i<5;i++)\

        printf("res[%d]=%f\n", i, rtab[i]);\

    printf("fpuc=%04x fpus=%04x fptag=%04x\n",\

           (env)->fpuc,\

           (env)->fpus & 0xff00,\

           (env)->fptag);\

}

void test_fenv(void)

{

    struct __attribute__((packed)) {

        uint16_t fpuc;

        uint16_t dummy1;

        uint16_t fpus;

        uint16_t dummy2;

        uint16_t fptag;

        uint16_t dummy3;

        uint32_t ignored[4];

        long double fpregs[8];

    } float_env32;

    struct __attribute__((packed)) {

        uint16_t fpuc;

        uint16_t fpus;

        uint16_t fptag;

        uint16_t ignored[4];

        long double fpregs[8];

    } float_env16;

    double dtab[8];

    double rtab[8];

    int i;

    for(i=0;i<8;i++)

        dtab[i] = i + 1;

    TEST_ENV(&float_env16, "data16 fnstenv", "data16 fldenv");

    TEST_ENV(&float_env16, "data16 fnsave", "data16 frstor");

    TEST_ENV(&float_env32, "fnstenv", "fldenv");

    TEST_ENV(&float_env32, "fnsave", "frstor");

    /* test for ffree */

    for(i=0;i<5;i++)

        asm volatile ("fldl %0" : : "m" (dtab[i]));

    asm volatile("ffree %st(2)");

    asm volatile ("fnstenv %0\n" : : "m" (float_env32));

    asm volatile ("fninit");

    printf("fptag=%04x\n", float_env32.fptag);

}

#define TEST_FCMOV(a, b, eflags, CC)\

{\

    double res;\

    asm("push %3\n"\

        "popf\n"\

        "fcmov" CC " %2, %0\n"\

        : "=t" (res)\

        : "0" (a), "u" (b), "g" (eflags));\

    printf("fcmov%s eflags=0x%04x-> %f\n", \

           CC, eflags, res);\

}

void test_fcmov(void)

{

    double a, b;

    int eflags, i;

    a = 1.0;

    b = 2.0;

    for(i = 0; i < 4; i++) {

        eflags = 0;

        if (i & 1)

            eflags |= CC_C;

        if (i & 2)

            eflags |= CC_Z;

        TEST_FCMOV(a, b, eflags, "b");

        TEST_FCMOV(a, b, eflags, "e");

        TEST_FCMOV(a, b, eflags, "be");

        TEST_FCMOV(a, b, eflags, "nb");

        TEST_FCMOV(a, b, eflags, "ne");

        TEST_FCMOV(a, b, eflags, "nbe");

    }

    TEST_FCMOV(a, b, 0, "u");

    TEST_FCMOV(a, b, CC_P, "u");

    TEST_FCMOV(a, b, 0, "nu");

    TEST_FCMOV(a, b, CC_P, "nu");

}

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(0.5);

    test_fcvt(-0.5);

    test_fcvt(1.0/7.0);

    test_fcvt(-1.0/9.0);

    test_fcvt(32768);

    test_fcvt(-1e20);

    test_fconst();

    test_fbcd(1234567890123456);

    test_fbcd(-123451234567890);

    test_fenv();

    if (TEST_CMOV) {

        test_fcmov();

    }

}

/**********************************************/

#define TEST_BCD(op, op0, cc_in, cc_mask)\

{\

    int res, flags;\

    res = op0;\

    flags = cc_in;\

    asm ("push %3\n\t"\

         "popf\n\t"\

         #op "\n\t"\

         "pushf\n\t"\

         "popl %1\n\t"\

        : "=a" (res), "=g" (flags)\

        : "0" (res), "1" (flags));\

    printf("%-10s A=%08x R=%08x CCIN=%04x CC=%04x\n",\

           #op, op0, res, cc_in, flags & cc_mask);\

}

void test_bcd(void)

{

    TEST_BCD(daa, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(daa, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(aaa, 0x12340205, CC_A, (CC_C | CC_A));

    TEST_BCD(aaa, 0x12340306, CC_A, (CC_C | CC_A));

    TEST_BCD(aaa, 0x1234040a, CC_A, (CC_C | CC_A));

    TEST_BCD(aaa, 0x123405fa, CC_A, (CC_C | CC_A));

    TEST_BCD(aaa, 0x12340205, 0, (CC_C | CC_A));

    TEST_BCD(aaa, 0x12340306, 0, (CC_C | CC_A));

    TEST_BCD(aaa, 0x1234040a, 0, (CC_C | CC_A));

    TEST_BCD(aaa, 0x123405fa, 0, (CC_C | CC_A));

    TEST_BCD(aas, 0x12340205, CC_A, (CC_C | CC_A));

    TEST_BCD(aas, 0x12340306, CC_A, (CC_C | CC_A));

    TEST_BCD(aas, 0x1234040a, CC_A, (CC_C | CC_A));

    TEST_BCD(aas, 0x123405fa, CC_A, (CC_C | CC_A));

    TEST_BCD(aas, 0x12340205, 0, (CC_C | CC_A));

    TEST_BCD(aas, 0x12340306, 0, (CC_C | CC_A));

    TEST_BCD(aas, 0x1234040a, 0, (CC_C | CC_A));

    TEST_BCD(aas, 0x123405fa, 0, (CC_C | CC_A));

    TEST_BCD(aam, 0x12340547, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));

    TEST_BCD(aad, 0x12340407, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));

}

#define TEST_XCHG(op, size, opconst)\

{\

    int op0, op1;\

    op0 = 0x12345678;\

    op1 = 0xfbca7654;\

    asm(#op " %" size "0, %" size "1" \

        : "=q" (op0), opconst (op1) \

        : "0" (op0), "1" (op1));\

    printf("%-10s A=%08x B=%08x\n",\

           #op, op0, op1);\

}

#define TEST_CMPXCHG(op, size, opconst, eax)\

{\

    int op0, op1;\

    op0 = 0x12345678;\

    op1 = 0xfbca7654;\

    asm(#op " %" size "0, %" size "1" \

        : "=q" (op0), opconst (op1) \

        : "0" (op0), "1" (op1), "a" (eax));\

    printf("%-10s EAX=%08x A=%08x C=%08x\n",\

           #op, eax, op0, op1);\

}

void test_xchg(void)

{

    TEST_XCHG(xchgl, "", "=q");

    TEST_XCHG(xchgw, "w", "=q");

    TEST_XCHG(xchgb, "b", "=q");

    TEST_XCHG(xchgl, "", "=m");

    TEST_XCHG(xchgw, "w", "=m");

    TEST_XCHG(xchgb, "b", "=m");

    TEST_XCHG(xaddl, "", "=q");

    TEST_XCHG(xaddw, "w", "=q");

    TEST_XCHG(xaddb, "b", "=q");

    {

        int res;

        res = 0x12345678;

        asm("xaddl %1, %0" : "=r" (res) : "0" (res));

        printf("xaddl same res=%08x\n", res);

    }

    TEST_XCHG(xaddl, "", "=m");

    TEST_XCHG(xaddw, "w", "=m");

    TEST_XCHG(xaddb, "b", "=m");

    TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfffefdfc);

    TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfffefdfc);

    TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfffefdfc);

    TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc);

    TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc);

    TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc);

    {

        uint64_t op0, op1, op2;

        int i, eflags;

        for(i = 0; i < 2; i++) {

            op0 = 0x123456789abcd;

            if (i == 0)

                op1 = 0xfbca765423456;

            else

                op1 = op0;

            op2 = 0x6532432432434;

            asm("cmpxchg8b %1\n" 

                "pushf\n"

                "popl %2\n"

                : "=A" (op0), "=m" (op1), "=g" (eflags)

                : "0" (op0), "m" (op1), "b" ((int)op2), "c" ((int)(op2 >> 32)));

            printf("cmpxchg8b: op0=%016llx op1=%016llx CC=%02x\n", 

                    op0, op1, eflags & CC_Z);

        }

    }

}

/**********************************************/

/* segmentation tests */

#include <asm/ldt.h>

#include <linux/unistd.h>

#include <linux/version.h>

_syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount)

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66)

#define modify_ldt_ldt_s user_desc

#endif

uint8_t seg_data1[4096];

uint8_t seg_data2[4096];

#define MK_SEL(n) (((n) << 3) | 7)

#define TEST_LR(op, size, seg, mask)\

{\

    int res, res2;\

    res = 0x12345678;\

    asm (op " %" size "2, %" size "0\n" \

         "movl $0, %1\n"\

         "jnz 1f\n"\

         "movl $1, %1\n"\

         "1:\n"\

         : "=r" (res), "=r" (res2) : "m" (seg), "0" (res));\

    printf(op ": Z=%d %08x\n", res2, res & ~(mask));\

}

/* NOTE: we use Linux modify_ldt syscall */

void test_segs(void)

{

    struct modify_ldt_ldt_s ldt;

    long long ldt_table[3];

    int res, res2;

    char tmp;

    struct {

        uint32_t offset;

        uint16_t seg;

    } __attribute__((packed)) segoff;

    ldt.entry_number = 1;

    ldt.base_addr = (unsigned long)&seg_data1;

    ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12;

    ldt.seg_32bit = 1;

    ldt.contents = MODIFY_LDT_CONTENTS_DATA;

    ldt.read_exec_only = 0;

    ldt.limit_in_pages = 1;

    ldt.seg_not_present = 0;

    ldt.useable = 1;

    modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */

    ldt.entry_number = 2;

    ldt.base_addr = (unsigned long)&seg_data2;

    ldt.limit = (sizeof(seg_data2) + 0xfff) >> 12;

    ldt.seg_32bit = 1;

    ldt.contents = MODIFY_LDT_CONTENTS_DATA;

    ldt.read_exec_only = 0;

    ldt.limit_in_pages = 1;

    ldt.seg_not_present = 0;

    ldt.useable = 1;

    modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */

    modify_ldt(0, &ldt_table, sizeof(ldt_table)); /* read ldt entries */

#if 0

    {

        int i;

        for(i=0;i<3;i++)

            printf("%d: %016Lx\n", i, ldt_table[i]);

    }

#endif

    /* do some tests with fs or gs */

    asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1)));

    seg_data1[1] = 0xaa;

    seg_data2[1] = 0x55;

    asm volatile ("fs movzbl 0x1, %0" : "=r" (res));

    printf("FS[1] = %02x\n", res);

    asm volatile ("pushl %%gs\n"

                  "movl %1, %%gs\n"

                  "gs movzbl 0x1, %0\n"

                  "popl %%gs\n"

                  : "=r" (res)

                  : "r" (MK_SEL(2)));

    printf("GS[1] = %02x\n", res);

    /* tests with ds/ss (implicit segment case) */

    tmp = 0xa5;

    asm volatile ("pushl %%ebp\n\t"

                  "pushl %%ds\n\t"

                  "movl %2, %%ds\n\t"

                  "movl %3, %%ebp\n\t"

                  "movzbl 0x1, %0\n\t"