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);

}

#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_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);

    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, prefix)\

{\

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

    asm("fld1\n"\

        prefix "fnstenv %1\n"\

        prefix "fldenv %1\n"\

        : "=t" (res) : "m" (*(env)));\

    printf("res=%f\n", res);\

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

           (env)->fpuc,\

           (env)->fpus & 0xff00,\

           (env)->fptag);\

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

    asm("fld1\n"\

        prefix "fnsave %1\n"\

        prefix "frstor %1\n"\

        : "=t" (res) : "m" (*(env)));\

    printf("res=%f\n", res);\

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

           (env)->fpuc,\

           (env)->fpus & 0xff00,\

           (env)->fptag);\

    printf("ST(0) = %Lf\n",\

           (env)->fpregs[0]);\

}

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 res;

    TEST_ENV(&float_env16, "data16 ");

    TEST_ENV(&float_env32, "");

}

#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);\