--- /dev/null
+/*
+ * 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"
+
+#if 0
+#define OP rcr
+#define OP_CC
+#include "test-i386-shift.h"
+
+#define OP rcl
+#define OP_CC
+#include "test-i386-shift.h"
+#endif
+
+#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 ? */
+#if 0
+#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"
+#endif
+
+/* 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)");
+}
+
+#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, 0, 0);
+ test_imulw(0, 0xFF, 0xFF);
+ test_imulw(0, 0xFF, 0x100);
+ test_imulw(0, 0x1234001d, 45);
+ test_imulw(0, 23, -45);
+ test_imulw(0, 0x8000, 0x8000);
+ test_imulw(0, 0x100, 0x100);
+
+ test_imull(0, 0, 0);
+ test_imull(0, 0xFFFF, 0xFFFF);
+ test_imull(0, 0xFFFF, 0x10000);
+ 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);
+#if 0
+ 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);
+#endif
+ test_idivl(0, 0x12345678, 12347);
+ test_idivl(0, -233223, -45);
+ test_idivl(0, 0x80000000, -1);
+ test_idivl(0x12343, 0x12345678, 0x81234567);
+#if 0
+ 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);
+#endif
+ 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);
+}
+
+/**********************************************/
+#if 0
+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();
+ }
+}
+#endif
+
+/**********************************************/
+#if 0
+
+#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);
+ }
+ }
+}
+#endif
+
+/**********************************************/
+/* segmentation tests */
+#if 0
+#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"
+ "movzbl (%%ebp), %1\n\t"
+ "popl %%ds\n\t"
+ "popl %%ebp\n\t"
+ : "=r" (res), "=r" (res2)
+ : "r" (MK_SEL(1)), "r" (&tmp));
+ printf("DS[1] = %02x\n", res);
+ printf("SS[tmp] = %02x\n", res2);
+
+ segoff.seg = MK_SEL(2);
+ segoff.offset = 0xabcdef12;
+ asm volatile("lfs %2, %0\n\t"
+ "movl %%fs, %1\n\t"
+ : "=r" (res), "=g" (res2)
+ : "m" (segoff));
+ printf("FS:reg = %04x:%08x\n", res2, res);
+
+ TEST_LR("larw", "w", MK_SEL(2), 0x0100);
+ TEST_LR("larl", "", MK_SEL(2), 0x0100);
+ TEST_LR("lslw", "w", MK_SEL(2), 0);
+ TEST_LR("lsll", "", MK_SEL(2), 0);
+
+ TEST_LR("larw", "w", 0xfff8, 0);
+ TEST_LR("larl", "", 0xfff8, 0);
+ TEST_LR("lslw", "w", 0xfff8, 0);
+ TEST_LR("lsll", "", 0xfff8, 0);
+}
+#endif
+
+#if 0
+/* 16 bit code test */
+extern char code16_start, code16_end;
+extern char code16_func1;
+extern char code16_func2;
+extern char code16_func3;
+
+void test_code16(void)
+{
+ struct modify_ldt_ldt_s ldt;
+ int res, res2;
+
+ /* build a code segment */
+ ldt.entry_number = 1;
+ ldt.base_addr = (unsigned long)&code16_start;
+ ldt.limit = &code16_end - &code16_start;
+ ldt.seg_32bit = 0;
+ ldt.contents = MODIFY_LDT_CONTENTS_CODE;
+ ldt.read_exec_only = 0;
+ ldt.limit_in_pages = 0;
+ ldt.seg_not_present = 0;
+ ldt.useable = 1;
+ modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
+
+ /* call the first function */
+ asm volatile ("lcall %1, %2"
+ : "=a" (res)
+ : "i" (MK_SEL(1)), "i" (&code16_func1): "memory", "cc");
+ printf("func1() = 0x%08x\n", res);
+ asm volatile ("lcall %2, %3"
+ : "=a" (res), "=c" (res2)
+ : "i" (MK_SEL(1)), "i" (&code16_func2): "memory", "cc");
+ printf("func2() = 0x%08x spdec=%d\n", res, res2);
+ asm volatile ("lcall %1, %2"
+ : "=a" (res)
+ : "i" (MK_SEL(1)), "i" (&code16_func3): "memory", "cc");
+ printf("func3() = 0x%08x\n", res);
+}
+#endif
+
+extern char func_lret32;
+extern char func_iret32;
+
+void test_misc(void)
+{
+ char table[256];
+ int res, i;
+
+ for(i=0;i<256;i++) table[i] = 256 - i;
+ res = 0x12345678;
+ asm ("xlat" : "=a" (res) : "b" (table), "0" (res));
+ printf("xlat: EAX=%08x\n", res);
+#if 0
+ asm volatile ("pushl %%cs ; call %1"
+ : "=a" (res)
+ : "m" (func_lret32): "memory", "cc");
+ printf("func_lret32=%x\n", res);
+
+ asm volatile ("pushfl ; pushl %%cs ; call %1"
+ : "=a" (res)
+ : "m" (func_iret32): "memory", "cc");
+ printf("func_iret32=%x\n", res);
+#endif
+ /* specific popl test */
+ asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popl (%%esp) ; popl %0"
+ : "=g" (res));
+ printf("popl esp=%x\n", res);
+#if 0
+ /* specific popw test */
+ asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popw (%%esp) ; addl $2, %%esp ; popl %0"
+ : "=g" (res));
+ printf("popw esp=%x\n", res);
+#endif
+}
+
+uint8_t str_buffer[4096];
+
+#define TEST_STRING1(OP, size, DF, REP)\
+{\
+ int esi, edi, eax, ecx, eflags;\
+\
+ esi = (long)(str_buffer + sizeof(str_buffer) / 2);\
+ edi = (long)(str_buffer + sizeof(str_buffer) / 2) + 16;\
+ eax = 0x12345678;\
+ ecx = 17;\
+\
+ asm volatile ("pushl $0\n\t"\
+ "popf\n\t"\
+ DF "\n\t"\
+ REP #OP size "\n\t"\
+ "cld\n\t"\
+ "pushf\n\t"\
+ "popl %4\n\t"\
+ : "=S" (esi), "=D" (edi), "=a" (eax), "=c" (ecx), "=g" (eflags)\
+ : "0" (esi), "1" (edi), "2" (eax), "3" (ecx));\
+ printf("%-10s ESI=%08x EDI=%08x EAX=%08x ECX=%08x EFL=%04x\n",\
+ REP #OP size, esi, edi, eax, ecx,\
+ eflags & (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));\
+}
+
+#define TEST_STRING(OP, REP)\
+ TEST_STRING1(OP, "b", "", REP);\
+ TEST_STRING1(OP, "w", "", REP);\
+ TEST_STRING1(OP, "l", "", REP);\
+ TEST_STRING1(OP, "b", "std", REP);\
+ TEST_STRING1(OP, "w", "std", REP);\
+ TEST_STRING1(OP, "l", "std", REP)
+
+void test_string(void)
+{
+ int i;
+ for(i = 0;i < sizeof(str_buffer); i++)
+ str_buffer[i] = i + 0x56;
+ TEST_STRING(stos, "");
+ TEST_STRING(stos, "rep ");
+ TEST_STRING(lods, ""); /* to verify stos */
+ // TEST_STRING(lods, "rep ");
+ TEST_STRING(movs, "");
+ TEST_STRING(movs, "rep ");
+ TEST_STRING(lods, ""); /* to verify stos */
+
+ /* XXX: better tests */
+ TEST_STRING(scas, "");
+ TEST_STRING(scas, "repz ");
+ TEST_STRING(scas, "repnz ");
+ TEST_STRING(cmps, "");
+ TEST_STRING(cmps, "repz ");
+ TEST_STRING(cmps, "repnz ");
+}
+
+/* VM86 test */
+#if 0
+static inline void set_bit(uint8_t *a, unsigned int bit)
+{
+ a[bit / 8] |= (1 << (bit % 8));
+}
+
+static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg)
+{
+ return (uint8_t *)((seg << 4) + (reg & 0xffff));
+}
+
+static inline void pushw(struct vm86_regs *r, int val)
+{
+ r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff);
+ *(uint16_t *)seg_to_linear(r->ss, r->esp) = val;
+}
+
+#undef __syscall_return
+#define __syscall_return(type, res) \
+do { \
+ return (type) (res); \
+} while (0)
+
+_syscall2(int, vm86, int, func, struct vm86plus_struct *, v86)
+
+extern char vm86_code_start;
+extern char vm86_code_end;
+
+#define VM86_CODE_CS 0x100
+#define VM86_CODE_IP 0x100
+
+void test_vm86(void)
+{
+ struct vm86plus_struct ctx;
+ struct vm86_regs *r;
+ uint8_t *vm86_mem;
+ int seg, ret;
+
+ vm86_mem = mmap((void *)0x00000000, 0x110000,
+ PROT_WRITE | PROT_READ | PROT_EXEC,
+ MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
+ if (vm86_mem == MAP_FAILED) {
+ printf("ERROR: could not map vm86 memory");
+ return;
+ }
+ memset(&ctx, 0, sizeof(ctx));
+
+ /* init basic registers */
+ r = &ctx.regs;
+ r->eip = VM86_CODE_IP;
+ r->esp = 0xfffe;
+ seg = VM86_CODE_CS;
+ r->cs = seg;
+ r->ss = seg;
+ r->ds = seg;
+ r->es = seg;
+ r->fs = seg;
+ r->gs = seg;
+ r->eflags = VIF_MASK;
+
+ /* move code to proper address. We use the same layout as a .com
+ dos program. */
+ memcpy(vm86_mem + (VM86_CODE_CS << 4) + VM86_CODE_IP,
+ &vm86_code_start, &vm86_code_end - &vm86_code_start);
+
+ /* mark int 0x21 as being emulated */
+ set_bit((uint8_t *)&ctx.int_revectored, 0x21);
+
+ for(;;) {
+ ret = vm86(VM86_ENTER, &ctx);
+ switch(VM86_TYPE(ret)) {
+ case VM86_INTx:
+ {
+ int int_num, ah, v;
+
+ int_num = VM86_ARG(ret);
+ if (int_num != 0x21)
+ goto unknown_int;
+ ah = (r->eax >> 8) & 0xff;
+ switch(ah) {
+ case 0x00: /* exit */
+ goto the_end;
+ case 0x02: /* write char */
+ {
+ uint8_t c = r->edx;
+ putchar(c);
+ }
+ break;
+ case 0x09: /* write string */
+ {
+ uint8_t c, *ptr;
+ ptr = seg_to_linear(r->ds, r->edx);
+ for(;;) {
+ c = *ptr++;
+ if (c == '$')
+ break;
+ putchar(c);
+ }
+ r->eax = (r->eax & ~0xff) | '$';
+ }
+ break;
+ case 0xff: /* extension: write eflags number in edx */
+ v = (int)r->edx;
+#ifndef LINUX_VM86_IOPL_FIX
+ v &= ~0x3000;
+#endif
+ printf("%08x\n", v);
+ break;
+ default:
+ unknown_int:
+ printf("unsupported int 0x%02x\n", int_num);
+ goto the_end;
+ }
+ }
+ break;
+ case VM86_SIGNAL:
+ /* a signal came, we just ignore that */
+ break;
+ case VM86_STI:
+ break;
+ default:
+ printf("ERROR: unhandled vm86 return code (0x%x)\n", ret);
+ goto the_end;
+ }
+ }
+ the_end:
+ printf("VM86 end\n");
+ munmap(vm86_mem, 0x110000);
+}
+#endif
+
+/* exception tests */
+#if 0
+#ifndef REG_EAX
+#define REG_EAX EAX
+#define REG_EBX EBX
+#define REG_ECX ECX
+#define REG_EDX EDX
+#define REG_ESI ESI
+#define REG_EDI EDI
+#define REG_EBP EBP
+#define REG_ESP ESP
+#define REG_EIP EIP
+#define REG_EFL EFL
+#define REG_TRAPNO TRAPNO
+#define REG_ERR ERR
+#endif
+
+jmp_buf jmp_env;
+int v1;
+int tab[2];
+
+void sig_handler(int sig, siginfo_t *info, void *puc)
+{
+ struct ucontext *uc = puc;
+
+ printf("si_signo=%d si_errno=%d si_code=%d",
+ info->si_signo, info->si_errno, info->si_code);
+ printf(" si_addr=0x%08lx",
+ (unsigned long)info->si_addr);
+ printf("\n");
+
+ printf("trapno=0x%02x err=0x%08x",
+ uc->uc_mcontext.gregs[REG_TRAPNO],
+ uc->uc_mcontext.gregs[REG_ERR]);
+ printf(" EIP=0x%08x", uc->uc_mcontext.gregs[REG_EIP]);
+ printf("\n");
+ longjmp(jmp_env, 1);
+}
+
+void test_exceptions(void)
+{
+ struct modify_ldt_ldt_s ldt;
+ struct sigaction act;
+ volatile int val;
+
+ act.sa_sigaction = sig_handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ sigaction(SIGFPE, &act, NULL);
+ sigaction(SIGILL, &act, NULL);
+ sigaction(SIGSEGV, &act, NULL);
+ sigaction(SIGBUS, &act, NULL);
+ sigaction(SIGTRAP, &act, NULL);
+
+ /* test division by zero reporting */
+ printf("DIVZ exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ /* now divide by zero */
+ v1 = 0;
+ v1 = 2 / v1;
+ }
+
+ printf("BOUND exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ /* bound exception */
+ tab[0] = 1;
+ tab[1] = 10;
+ asm volatile ("bound %0, %1" : : "r" (11), "m" (tab));
+ }
+
+ printf("segment exceptions:\n");
+ if (setjmp(jmp_env) == 0) {
+ /* load an invalid segment */
+ asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 1));
+ }
+ if (setjmp(jmp_env) == 0) {
+ /* null data segment is valid */
+ asm volatile ("movl %0, %%fs" : : "r" (3));
+ /* null stack segment */
+ asm volatile ("movl %0, %%ss" : : "r" (3));
+ }
+
+ 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 = 1;
+ ldt.useable = 1;
+ modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
+
+ if (setjmp(jmp_env) == 0) {
+ /* segment not present */
+ asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1)));
+ }
+
+ /* test SEGV reporting */
+ printf("PF exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ val = 1;
+ /* we add a nop to test a weird PC retrieval case */
+ asm volatile ("nop");
+ /* now store in an invalid address */
+ *(char *)0x1234 = 1;
+ }
+
+ /* test SEGV reporting */
+ printf("PF exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ val = 1;
+ /* read from an invalid address */
+ v1 = *(char *)0x1234;
+ }
+
+ /* test illegal instruction reporting */
+ printf("UD2 exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ /* now execute an invalid instruction */
+ asm volatile("ud2");
+ }
+ printf("lock nop exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ /* now execute an invalid instruction */
+ asm volatile("lock nop");
+ }
+
+ printf("INT exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("int $0xfd");
+ }
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("int $0x01");
+ }
+ if (setjmp(jmp_env) == 0) {
+ asm volatile (".byte 0xcd, 0x03");
+ }
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("int $0x04");
+ }
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("int $0x05");
+ }
+
+ printf("INT3 exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("int3");
+ }
+
+ printf("CLI exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("cli");
+ }
+
+ printf("STI exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("cli");
+ }
+
+ printf("INTO exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ /* overflow exception */
+ asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff));
+ }
+
+ printf("OUTB exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0));
+ }
+
+ printf("INB exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321));
+ }
+
+ printf("REP OUTSB exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1));
+ }
+
+ printf("REP INSB exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1));
+ }
+
+ printf("HLT exception:\n");
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("hlt");
+ }
+
+ printf("single step exception:\n");
+ val = 0;
+ if (setjmp(jmp_env) == 0) {
+ asm volatile ("pushf\n"
+ "orl $0x00100, (%%esp)\n"
+ "popf\n"
+ "movl $0xabcd, %0\n"
+ "movl $0x0, %0\n" : "=m" (val) : : "cc", "memory");
+ }
+ printf("val=0x%x\n", val);
+}
+
+/* specific precise single step test */
+void sig_trap_handler(int sig, siginfo_t *info, void *puc)
+{
+ struct ucontext *uc = puc;
+ printf("EIP=0x%08x\n", uc->uc_mcontext.gregs[REG_EIP]);
+}
+
+const uint8_t sstep_buf1[4] = { 1, 2, 3, 4};
+uint8_t sstep_buf2[4];
+
+void test_single_step(void)
+{
+ struct sigaction act;
+ volatile int val;
+ int i;
+
+ val = 0;
+ act.sa_sigaction = sig_trap_handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+ sigaction(SIGTRAP, &act, NULL);
+ asm volatile ("pushf\n"
+ "orl $0x00100, (%%esp)\n"
+ "popf\n"
+ "movl $0xabcd, %0\n"
+
+ /* jmp test */
+ "movl $3, %%ecx\n"
+ "1:\n"
+ "addl $1, %0\n"
+ "decl %%ecx\n"
+ "jnz 1b\n"
+
+ /* movsb: the single step should stop at each movsb iteration */
+ "movl $sstep_buf1, %%esi\n"
+ "movl $sstep_buf2, %%edi\n"
+ "movl $0, %%ecx\n"
+ "rep movsb\n"
+ "movl $3, %%ecx\n"
+ "rep movsb\n"
+ "movl $1, %%ecx\n"
+ "rep movsb\n"
+
+ /* cmpsb: the single step should stop at each cmpsb iteration */
+ "movl $sstep_buf1, %%esi\n"
+ "movl $sstep_buf2, %%edi\n"
+ "movl $0, %%ecx\n"
+ "rep cmpsb\n"
+ "movl $4, %%ecx\n"
+ "rep cmpsb\n"
+
+ /* getpid() syscall: single step should skip one
+ instruction */
+ "movl $20, %%eax\n"
+ "int $0x80\n"
+ "movl $0, %%eax\n"
+
+ /* when modifying SS, trace is not done on the next
+ instruction */
+ "movl %%ss, %%ecx\n"
+ "movl %%ecx, %%ss\n"
+ "addl $1, %0\n"
+ "movl $1, %%eax\n"
+ "movl %%ecx, %%ss\n"
+ "jmp 1f\n"
+ "addl $1, %0\n"
+ "1:\n"
+ "movl $1, %%eax\n"
+ "pushl %%ecx\n"
+ "popl %%ss\n"
+ "addl $1, %0\n"
+ "movl $1, %%eax\n"
+
+ "pushf\n"
+ "andl $~0x00100, (%%esp)\n"
+ "popf\n"
+ : "=m" (val)
+ :
+ : "cc", "memory", "eax", "ecx", "esi", "edi");
+ printf("val=%d\n", val);
+ for(i = 0; i < 4; i++)
+ printf("sstep_buf2[%d] = %d\n", i, sstep_buf2[i]);
+}
+
+/* self modifying code test */
+uint8_t code[] = {
+ 0xb8, 0x1, 0x00, 0x00, 0x00, /* movl $1, %eax */
+ 0xc3, /* ret */
+};
+
+asm("smc_code2:\n"
+ "movl 4(%esp), %eax\n"
+ "movl %eax, smc_patch_addr2 + 1\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "nop\n"
+ "smc_patch_addr2:\n"
+ "movl $1, %eax\n"
+ "ret\n");
+
+typedef int FuncType(void);
+extern int smc_code2(int);
+void test_self_modifying_code(void)
+{
+ int i;
+
+ printf("self modifying code:\n");
+ printf("func1 = 0x%x\n", ((FuncType *)code)());
+ for(i = 2; i <= 4; i++) {
+ code[1] = i;
+ printf("func%d = 0x%x\n", i, ((FuncType *)code)());
+ }
+
+ /* more difficult test : the modified code is just after the
+ modifying instruction. It is forbidden in Intel specs, but it
+ is used by old DOS programs */
+ for(i = 2; i <= 4; i++) {
+ printf("smc_code2(%d) = %d\n", i, smc_code2(i));
+ }
+}
+
+static void *call_end __init_call = NULL;
+#endif
+
+int main(int argc, char **argv)
+{
+ void **ptr;
+ void (*func)(void);
+
+#if 1
+ ptr = &call_start + 1;
+ while (*ptr != NULL) {
+ func = *ptr++;
+ func();
+ }
+#endif
+ //test_bsx(); // REINSTATE
+ test_mul(); //----------------
+ test_jcc(); //-------------
+ // test_floats();
+ //test_bcd();
+ //test_xchg();
+ // test_string(); // REINSTATE
+ // test_misc(); // REINSTATE
+ test_lea(); //------------------
+ // test_segs();
+ //test_code16();
+ //test_vm86();
+ //test_exceptions();
+ //test_self_modifying_code();
+ //test_single_step();
+ return 0;
+}
projects / thirdparty / valgrind.git / commitdiff
