root / tests / test-i386.c @ 4021dab0
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#define _GNU_SOURCE
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include <math.h> |
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#include <signal.h> |
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#include <setjmp.h> |
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#include <errno.h> |
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#include <sys/ucontext.h> |
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#include <sys/mman.h> |
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#include <asm/vm86.h> |
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#define TEST_CMOV 0 |
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#define TEST_FCOMI 0 |
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#define xglue(x, y) x ## y |
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#define glue(x, y) xglue(x, y)
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#define stringify(s) tostring(s)
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#define tostring(s) #s |
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#define CC_C 0x0001 |
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#define CC_P 0x0004 |
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#define CC_A 0x0010 |
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#define CC_Z 0x0040 |
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#define CC_S 0x0080 |
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#define CC_O 0x0800 |
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#define __init_call __attribute__ ((unused,__section__ (".initcall.init"))) |
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static void *call_start __init_call = NULL; |
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#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)
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#define OP add
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#include "test-i386.h" |
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#define OP sub
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#include "test-i386.h" |
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#define OP xor
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#include "test-i386.h" |
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#define OP and
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#include "test-i386.h" |
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#define OP or
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#include "test-i386.h" |
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#define OP cmp
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#include "test-i386.h" |
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#define OP adc
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#define OP_CC
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#include "test-i386.h" |
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#define OP sbb
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#define OP_CC
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#include "test-i386.h" |
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#define OP inc
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#define OP_CC
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#define OP1
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#include "test-i386.h" |
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#define OP dec
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#define OP_CC
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#define OP1
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#include "test-i386.h" |
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#define OP neg
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#define OP_CC
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#define OP1
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#include "test-i386.h" |
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#define OP not
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#define OP_CC
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#define OP1
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#include "test-i386.h" |
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#undef CC_MASK
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#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O)
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#define OP shl
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#include "test-i386-shift.h" |
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#define OP shr
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#include "test-i386-shift.h" |
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#define OP sar
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#include "test-i386-shift.h" |
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#define OP rol
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#include "test-i386-shift.h" |
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#define OP ror
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#include "test-i386-shift.h" |
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#define OP rcr
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#define OP_CC
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#include "test-i386-shift.h" |
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#define OP rcl
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#define OP_CC
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#include "test-i386-shift.h" |
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#define OP shld
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#define OP_SHIFTD
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#define OP_NOBYTE
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#include "test-i386-shift.h" |
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#define OP shrd
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#define OP_SHIFTD
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#define OP_NOBYTE
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#include "test-i386-shift.h" |
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/* XXX: should be more precise ? */
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#undef CC_MASK
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#define CC_MASK (CC_C)
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#define OP bt
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#define OP_NOBYTE
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#include "test-i386-shift.h" |
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#define OP bts
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#define OP_NOBYTE
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#include "test-i386-shift.h" |
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#define OP btr
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#define OP_NOBYTE
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#include "test-i386-shift.h" |
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#define OP btc
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#define OP_NOBYTE
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#include "test-i386-shift.h" |
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/* lea test (modrm support) */
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#define TEST_LEA(STR)\
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{\ |
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asm("leal " STR ", %0"\ |
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: "=r" (res)\
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: "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
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printf("lea %s = %08x\n", STR, res);\
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} |
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#define TEST_LEA16(STR)\
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{\ |
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asm(".code16 ; .byte 0x67 ; leal " STR ", %0 ; .code32"\ |
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: "=wq" (res)\
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: "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
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printf("lea %s = %08x\n", STR, res);\
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} |
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void test_lea(void) |
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{ |
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int eax, ebx, ecx, edx, esi, edi, res;
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eax = 0x0001;
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ebx = 0x0002;
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ecx = 0x0004;
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edx = 0x0008;
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esi = 0x0010;
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edi = 0x0020;
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TEST_LEA("0x4000");
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TEST_LEA("(%%eax)");
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TEST_LEA("(%%ebx)");
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TEST_LEA("(%%ecx)");
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TEST_LEA("(%%edx)");
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TEST_LEA("(%%esi)");
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TEST_LEA("(%%edi)");
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TEST_LEA("0x40(%%eax)");
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TEST_LEA("0x40(%%ebx)");
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TEST_LEA("0x40(%%ecx)");
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TEST_LEA("0x40(%%edx)");
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TEST_LEA("0x40(%%esi)");
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TEST_LEA("0x40(%%edi)");
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TEST_LEA("0x4000(%%eax)");
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TEST_LEA("0x4000(%%ebx)");
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TEST_LEA("0x4000(%%ecx)");
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TEST_LEA("0x4000(%%edx)");
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TEST_LEA("0x4000(%%esi)");
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TEST_LEA("0x4000(%%edi)");
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TEST_LEA("(%%eax, %%ecx)");
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TEST_LEA("(%%ebx, %%edx)");
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TEST_LEA("(%%ecx, %%ecx)");
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TEST_LEA("(%%edx, %%ecx)");
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TEST_LEA("(%%esi, %%ecx)");
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TEST_LEA("(%%edi, %%ecx)");
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TEST_LEA("0x40(%%eax, %%ecx)");
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TEST_LEA("0x4000(%%ebx, %%edx)");
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TEST_LEA("(%%ecx, %%ecx, 2)");
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TEST_LEA("(%%edx, %%ecx, 4)");
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TEST_LEA("(%%esi, %%ecx, 8)");
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TEST_LEA("(,%%eax, 2)");
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TEST_LEA("(,%%ebx, 4)");
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TEST_LEA("(,%%ecx, 8)");
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TEST_LEA("0x40(,%%eax, 2)");
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TEST_LEA("0x40(,%%ebx, 4)");
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TEST_LEA("0x40(,%%ecx, 8)");
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TEST_LEA("-10(%%ecx, %%ecx, 2)");
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TEST_LEA("-10(%%edx, %%ecx, 4)");
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TEST_LEA("-10(%%esi, %%ecx, 8)");
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TEST_LEA("0x4000(%%ecx, %%ecx, 2)");
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TEST_LEA("0x4000(%%edx, %%ecx, 4)");
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TEST_LEA("0x4000(%%esi, %%ecx, 8)");
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/* limited 16 bit addressing test */
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TEST_LEA16("0x4000");
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TEST_LEA16("(%%bx)");
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TEST_LEA16("(%%si)");
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TEST_LEA16("(%%di)");
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TEST_LEA16("0x40(%%bx)");
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TEST_LEA16("0x40(%%si)");
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TEST_LEA16("0x40(%%di)");
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TEST_LEA16("0x4000(%%bx)");
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TEST_LEA16("0x4000(%%si)");
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TEST_LEA16("(%%bx,%%si)");
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TEST_LEA16("(%%bx,%%di)");
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TEST_LEA16("0x40(%%bx,%%si)");
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TEST_LEA16("0x40(%%bx,%%di)");
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TEST_LEA16("0x4000(%%bx,%%si)");
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TEST_LEA16("0x4000(%%bx,%%di)");
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} |
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#define TEST_JCC(JCC, v1, v2)\
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{\ |
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int res;\
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asm("movl $1, %0\n\t"\ |
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"cmpl %2, %1\n\t"\
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"j" JCC " 1f\n\t"\ |
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"movl $0, %0\n\t"\
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"1:\n\t"\
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: "=r" (res)\
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: "r" (v1), "r" (v2));\ |
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printf("%-10s %d\n", "j" JCC, res);\ |
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\ |
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asm("movl $0, %0\n\t"\ |
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"cmpl %2, %1\n\t"\
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"set" JCC " %b0\n\t"\ |
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: "=r" (res)\
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: "r" (v1), "r" (v2));\ |
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printf("%-10s %d\n", "set" JCC, res);\ |
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if (TEST_CMOV) {\
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asm("movl $0x12345678, %0\n\t"\ |
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"cmpl %2, %1\n\t"\
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"cmov" JCC "l %3, %0\n\t"\ |
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: "=r" (res)\
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: "r" (v1), "r" (v2), "m" (1));\ |
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printf("%-10s R=0x%08x\n", "cmov" JCC "l", res);\ |
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asm("movl $0x12345678, %0\n\t"\ |
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"cmpl %2, %1\n\t"\
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"cmov" JCC "w %w3, %w0\n\t"\ |
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: "=r" (res)\
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: "r" (v1), "r" (v2), "r" (1));\ |
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printf("%-10s R=0x%08x\n", "cmov" JCC "w", res);\ |
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} \ |
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} |
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/* various jump tests */
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void test_jcc(void) |
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{ |
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TEST_JCC("ne", 1, 1); |
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TEST_JCC("ne", 1, 0); |
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TEST_JCC("e", 1, 1); |
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TEST_JCC("e", 1, 0); |
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TEST_JCC("l", 1, 1); |
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TEST_JCC("l", 1, 0); |
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TEST_JCC("l", 1, -1); |
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TEST_JCC("le", 1, 1); |
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TEST_JCC("le", 1, 0); |
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TEST_JCC("le", 1, -1); |
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TEST_JCC("ge", 1, 1); |
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TEST_JCC("ge", 1, 0); |
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TEST_JCC("ge", -1, 1); |
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TEST_JCC("g", 1, 1); |
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TEST_JCC("g", 1, 0); |
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TEST_JCC("g", 1, -1); |
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TEST_JCC("b", 1, 1); |
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TEST_JCC("b", 1, 0); |
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TEST_JCC("b", 1, -1); |
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TEST_JCC("be", 1, 1); |
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TEST_JCC("be", 1, 0); |
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TEST_JCC("be", 1, -1); |
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TEST_JCC("ae", 1, 1); |
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TEST_JCC("ae", 1, 0); |
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TEST_JCC("ae", 1, -1); |
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TEST_JCC("a", 1, 1); |
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TEST_JCC("a", 1, 0); |
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TEST_JCC("a", 1, -1); |
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TEST_JCC("p", 1, 1); |
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TEST_JCC("p", 1, 0); |
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TEST_JCC("np", 1, 1); |
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TEST_JCC("np", 1, 0); |
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TEST_JCC("o", 0x7fffffff, 0); |
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TEST_JCC("o", 0x7fffffff, -1); |
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TEST_JCC("no", 0x7fffffff, 0); |
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TEST_JCC("no", 0x7fffffff, -1); |
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TEST_JCC("s", 0, 1); |
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TEST_JCC("s", 0, -1); |
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TEST_JCC("s", 0, 0); |
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TEST_JCC("ns", 0, 1); |
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TEST_JCC("ns", 0, -1); |
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TEST_JCC("ns", 0, 0); |
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} |
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|
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#undef CC_MASK
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#define CC_MASK (CC_O | CC_C)
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#define OP mul
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#include "test-i386-muldiv.h" |
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#define OP imul
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#include "test-i386-muldiv.h" |
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#undef CC_MASK
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#define CC_MASK (0) |
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#define OP div
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#include "test-i386-muldiv.h" |
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#define OP idiv
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#include "test-i386-muldiv.h" |
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void test_imulw2(int op0, int op1) |
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{ |
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int res, s1, s0, flags;
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s0 = op0; |
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s1 = op1; |
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res = s0; |
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flags = 0;
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asm ("push %4\n\t" |
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"popf\n\t"
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"imulw %w2, %w0\n\t"
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"pushf\n\t"
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"popl %1\n\t"
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: "=q" (res), "=g" (flags) |
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: "q" (s1), "0" (res), "1" (flags)); |
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printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
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"imulw", s0, s1, res, flags & CC_MASK);
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} |
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|
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void test_imull2(int op0, int op1) |
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{ |
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int res, s1, s0, flags;
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s0 = op0; |
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s1 = op1; |
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res = s0; |
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flags = 0;
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asm ("push %4\n\t" |
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"popf\n\t"
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"imull %2, %0\n\t"
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"pushf\n\t"
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"popl %1\n\t"
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: "=q" (res), "=g" (flags) |
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: "q" (s1), "0" (res), "1" (flags)); |
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printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
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"imull", s0, s1, res, flags & CC_MASK);
|
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} |
387 |
|
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void test_mul(void) |
389 |
{ |
390 |
test_imulb(0x1234561d, 4); |
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test_imulb(3, -4); |
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test_imulb(0x80, 0x80); |
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test_imulb(0x10, 0x10); |
394 |
|
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test_imulw(0, 0x1234001d, 45); |
396 |
test_imulw(0, 23, -45); |
397 |
test_imulw(0, 0x8000, 0x8000); |
398 |
test_imulw(0, 0x100, 0x100); |
399 |
|
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test_imull(0, 0x1234001d, 45); |
401 |
test_imull(0, 23, -45); |
402 |
test_imull(0, 0x80000000, 0x80000000); |
403 |
test_imull(0, 0x10000, 0x10000); |
404 |
|
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test_mulb(0x1234561d, 4); |
406 |
test_mulb(3, -4); |
407 |
test_mulb(0x80, 0x80); |
408 |
test_mulb(0x10, 0x10); |
409 |
|
410 |
test_mulw(0, 0x1234001d, 45); |
411 |
test_mulw(0, 23, -45); |
412 |
test_mulw(0, 0x8000, 0x8000); |
413 |
test_mulw(0, 0x100, 0x100); |
414 |
|
415 |
test_mull(0, 0x1234001d, 45); |
416 |
test_mull(0, 23, -45); |
417 |
test_mull(0, 0x80000000, 0x80000000); |
418 |
test_mull(0, 0x10000, 0x10000); |
419 |
|
420 |
test_imulw2(0x1234001d, 45); |
421 |
test_imulw2(23, -45); |
422 |
test_imulw2(0x8000, 0x8000); |
423 |
test_imulw2(0x100, 0x100); |
424 |
|
425 |
test_imull2(0x1234001d, 45); |
426 |
test_imull2(23, -45); |
427 |
test_imull2(0x80000000, 0x80000000); |
428 |
test_imull2(0x10000, 0x10000); |
429 |
|
430 |
test_idivb(0x12341678, 0x127e); |
431 |
test_idivb(0x43210123, -5); |
432 |
test_idivb(0x12340004, -1); |
433 |
|
434 |
test_idivw(0, 0x12345678, 12347); |
435 |
test_idivw(0, -23223, -45); |
436 |
test_idivw(0, 0x12348000, -1); |
437 |
test_idivw(0x12343, 0x12345678, 0x81238567); |
438 |
|
439 |
test_idivl(0, 0x12345678, 12347); |
440 |
test_idivl(0, -233223, -45); |
441 |
test_idivl(0, 0x80000000, -1); |
442 |
test_idivl(0x12343, 0x12345678, 0x81234567); |
443 |
|
444 |
test_divb(0x12341678, 0x127e); |
445 |
test_divb(0x43210123, -5); |
446 |
test_divb(0x12340004, -1); |
447 |
|
448 |
test_divw(0, 0x12345678, 12347); |
449 |
test_divw(0, -23223, -45); |
450 |
test_divw(0, 0x12348000, -1); |
451 |
test_divw(0x12343, 0x12345678, 0x81238567); |
452 |
|
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test_divl(0, 0x12345678, 12347); |
454 |
test_divl(0, -233223, -45); |
455 |
test_divl(0, 0x80000000, -1); |
456 |
test_divl(0x12343, 0x12345678, 0x81234567); |
457 |
} |
458 |
|
459 |
#define TEST_BSX(op, size, op0)\
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460 |
{\ |
461 |
int res, val, resz;\
|
462 |
val = op0;\ |
463 |
asm("xorl %1, %1 ; " #op " %" size "2, %" size "0 ; setz %b1" \ |
464 |
: "=r" (res), "=q" (resz)\ |
465 |
: "g" (val));\
|
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printf("%-10s A=%08x R=%08x %d\n", #op, val, resz ? 0 : res, resz);\ |
467 |
} |
468 |
|
469 |
void test_bsx(void) |
470 |
{ |
471 |
TEST_BSX(bsrw, "w", 0); |
472 |
TEST_BSX(bsrw, "w", 0x12340128); |
473 |
TEST_BSX(bsrl, "", 0); |
474 |
TEST_BSX(bsrl, "", 0x00340128); |
475 |
TEST_BSX(bsfw, "w", 0); |
476 |
TEST_BSX(bsfw, "w", 0x12340128); |
477 |
TEST_BSX(bsfl, "", 0); |
478 |
TEST_BSX(bsfl, "", 0x00340128); |
479 |
} |
480 |
|
481 |
/**********************************************/
|
482 |
|
483 |
void test_fops(double a, double b) |
484 |
{ |
485 |
printf("a=%f b=%f a+b=%f\n", a, b, a + b);
|
486 |
printf("a=%f b=%f a-b=%f\n", a, b, a - b);
|
487 |
printf("a=%f b=%f a*b=%f\n", a, b, a * b);
|
488 |
printf("a=%f b=%f a/b=%f\n", a, b, a / b);
|
489 |
printf("a=%f b=%f fmod(a, b)=%f\n", a, b, fmod(a, b));
|
490 |
printf("a=%f sqrt(a)=%f\n", a, sqrt(a));
|
491 |
printf("a=%f sin(a)=%f\n", a, sin(a));
|
492 |
printf("a=%f cos(a)=%f\n", a, cos(a));
|
493 |
printf("a=%f tan(a)=%f\n", a, tan(a));
|
494 |
printf("a=%f log(a)=%f\n", a, log(a));
|
495 |
printf("a=%f exp(a)=%f\n", a, exp(a));
|
496 |
printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b));
|
497 |
/* just to test some op combining */
|
498 |
printf("a=%f asin(sin(a))=%f\n", a, asin(sin(a)));
|
499 |
printf("a=%f acos(cos(a))=%f\n", a, acos(cos(a)));
|
500 |
printf("a=%f atan(tan(a))=%f\n", a, atan(tan(a)));
|
501 |
|
502 |
} |
503 |
|
504 |
void test_fcmp(double a, double b) |
505 |
{ |
506 |
printf("(%f<%f)=%d\n",
|
507 |
a, b, a < b); |
508 |
printf("(%f<=%f)=%d\n",
|
509 |
a, b, a <= b); |
510 |
printf("(%f==%f)=%d\n",
|
511 |
a, b, a == b); |
512 |
printf("(%f>%f)=%d\n",
|
513 |
a, b, a > b); |
514 |
printf("(%f<=%f)=%d\n",
|
515 |
a, b, a >= b); |
516 |
if (TEST_FCOMI) {
|
517 |
unsigned int eflags; |
518 |
/* test f(u)comi instruction */
|
519 |
asm("fcomi %2, %1\n" |
520 |
"pushf\n"
|
521 |
"pop %0\n"
|
522 |
: "=r" (eflags)
|
523 |
: "t" (a), "u" (b)); |
524 |
printf("fcomi(%f %f)=%08x\n", a, b, eflags & (CC_Z | CC_P | CC_C));
|
525 |
} |
526 |
} |
527 |
|
528 |
void test_fcvt(double a) |
529 |
{ |
530 |
float fa;
|
531 |
long double la; |
532 |
int16_t fpuc; |
533 |
int i;
|
534 |
int64_t lla; |
535 |
int ia;
|
536 |
int16_t wa; |
537 |
double ra;
|
538 |
|
539 |
fa = a; |
540 |
la = a; |
541 |
printf("(float)%f = %f\n", a, fa);
|
542 |
printf("(long double)%f = %Lf\n", a, la);
|
543 |
printf("a=%016Lx\n", *(long long *)&a); |
544 |
printf("la=%016Lx %04x\n", *(long long *)&la, |
545 |
*(unsigned short *)((char *)(&la) + 8)); |
546 |
|
547 |
/* test all roundings */
|
548 |
asm volatile ("fstcw %0" : "=m" (fpuc)); |
549 |
for(i=0;i<4;i++) { |
550 |
asm volatile ("fldcw %0" : : "m" ((fpuc & ~0x0c00) | (i << 10))); |
551 |
asm volatile ("fist %0" : "=m" (wa) : "t" (a)); |
552 |
asm volatile ("fistl %0" : "=m" (ia) : "t" (a)); |
553 |
asm volatile ("fistpll %0" : "=m" (lla) : "t" (a) : "st"); |
554 |
asm volatile ("frndint ; fstl %0" : "=m" (ra) : "t" (a)); |
555 |
asm volatile ("fldcw %0" : : "m" (fpuc)); |
556 |
printf("(short)a = %d\n", wa);
|
557 |
printf("(int)a = %d\n", ia);
|
558 |
printf("(int64_t)a = %Ld\n", lla);
|
559 |
printf("rint(a) = %f\n", ra);
|
560 |
} |
561 |
} |
562 |
|
563 |
#define TEST(N) \
|
564 |
asm("fld" #N : "=t" (a)); \ |
565 |
printf("fld" #N "= %f\n", a); |
566 |
|
567 |
void test_fconst(void) |
568 |
{ |
569 |
double a;
|
570 |
TEST(1);
|
571 |
TEST(l2t); |
572 |
TEST(l2e); |
573 |
TEST(pi); |
574 |
TEST(lg2); |
575 |
TEST(ln2); |
576 |
TEST(z); |
577 |
} |
578 |
|
579 |
void test_fbcd(double a) |
580 |
{ |
581 |
unsigned short bcd[5]; |
582 |
double b;
|
583 |
|
584 |
asm("fbstp %0" : "=m" (bcd[0]) : "t" (a) : "st"); |
585 |
asm("fbld %1" : "=t" (b) : "m" (bcd[0])); |
586 |
printf("a=%f bcd=%04x%04x%04x%04x%04x b=%f\n",
|
587 |
a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b); |
588 |
} |
589 |
|
590 |
#define TEST_ENV(env, prefix)\
|
591 |
{\ |
592 |
memset((env), 0xaa, sizeof(*(env)));\ |
593 |
asm("fld1\n"\ |
594 |
prefix "fnstenv %1\n"\
|
595 |
prefix "fldenv %1\n"\
|
596 |
: "=t" (res) : "m" (*(env)));\ |
597 |
printf("res=%f\n", res);\
|
598 |
printf("fpuc=%04x fpus=%04x fptag=%04x\n",\
|
599 |
(env)->fpuc,\ |
600 |
(env)->fpus & 0xff00,\
|
601 |
(env)->fptag);\ |
602 |
memset((env), 0xaa, sizeof(*(env)));\ |
603 |
asm("fld1\n"\ |
604 |
prefix "fnsave %1\n"\
|
605 |
prefix "frstor %1\n"\
|
606 |
: "=t" (res) : "m" (*(env)));\ |
607 |
printf("res=%f\n", res);\
|
608 |
printf("fpuc=%04x fpus=%04x fptag=%04x\n",\
|
609 |
(env)->fpuc,\ |
610 |
(env)->fpus & 0xff00,\
|
611 |
(env)->fptag);\ |
612 |
printf("ST(0) = %Lf\n",\
|
613 |
(env)->fpregs[0]);\
|
614 |
} |
615 |
|
616 |
void test_fenv(void) |
617 |
{ |
618 |
struct __attribute__((packed)) {
|
619 |
uint16_t fpuc; |
620 |
uint16_t dummy1; |
621 |
uint16_t fpus; |
622 |
uint16_t dummy2; |
623 |
uint16_t fptag; |
624 |
uint16_t dummy3; |
625 |
uint32_t ignored[4];
|
626 |
long double fpregs[8]; |
627 |
} float_env32; |
628 |
struct __attribute__((packed)) {
|
629 |
uint16_t fpuc; |
630 |
uint16_t fpus; |
631 |
uint16_t fptag; |
632 |
uint16_t ignored[4];
|
633 |
long double fpregs[8]; |
634 |
} float_env16; |
635 |
double res;
|
636 |
|
637 |
TEST_ENV(&float_env16, "data16 ");
|
638 |
TEST_ENV(&float_env32, "");
|
639 |
} |
640 |
|
641 |
void test_floats(void) |
642 |
{ |
643 |
test_fops(2, 3); |
644 |
test_fops(1.4, -5); |
645 |
test_fcmp(2, -1); |
646 |
test_fcmp(2, 2); |
647 |
test_fcmp(2, 3); |
648 |
test_fcvt(0.5); |
649 |
test_fcvt(-0.5); |
650 |
test_fcvt(1.0/7.0); |
651 |
test_fcvt(-1.0/9.0); |
652 |
test_fcvt(32768);
|
653 |
test_fcvt(-1e20);
|
654 |
test_fconst(); |
655 |
test_fbcd(1234567890123456);
|
656 |
test_fbcd(-123451234567890);
|
657 |
test_fenv(); |
658 |
} |
659 |
|
660 |
/**********************************************/
|
661 |
|
662 |
#define TEST_BCD(op, op0, cc_in, cc_mask)\
|
663 |
{\ |
664 |
int res, flags;\
|
665 |
res = op0;\ |
666 |
flags = cc_in;\ |
667 |
asm ("push %3\n\t"\ |
668 |
"popf\n\t"\
|
669 |
#op "\n\t"\ |
670 |
"pushf\n\t"\
|
671 |
"popl %1\n\t"\
|
672 |
: "=a" (res), "=g" (flags)\ |
673 |
: "0" (res), "1" (flags));\ |
674 |
printf("%-10s A=%08x R=%08x CCIN=%04x CC=%04x\n",\
|
675 |
#op, op0, res, cc_in, flags & cc_mask);\
|
676 |
} |
677 |
|
678 |
void test_bcd(void) |
679 |
{ |
680 |
TEST_BCD(daa, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
681 |
TEST_BCD(daa, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
682 |
TEST_BCD(daa, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
683 |
TEST_BCD(daa, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
684 |
TEST_BCD(daa, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
685 |
TEST_BCD(daa, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
686 |
TEST_BCD(daa, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
687 |
TEST_BCD(daa, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
688 |
TEST_BCD(daa, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
689 |
TEST_BCD(daa, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
690 |
TEST_BCD(daa, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
691 |
TEST_BCD(daa, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
692 |
TEST_BCD(daa, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
693 |
|
694 |
TEST_BCD(das, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
695 |
TEST_BCD(das, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
696 |
TEST_BCD(das, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
697 |
TEST_BCD(das, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
698 |
TEST_BCD(das, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
699 |
TEST_BCD(das, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
700 |
TEST_BCD(das, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
701 |
TEST_BCD(das, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
702 |
TEST_BCD(das, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
703 |
TEST_BCD(das, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
704 |
TEST_BCD(das, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
705 |
TEST_BCD(das, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
706 |
TEST_BCD(das, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
|
707 |
|
708 |
TEST_BCD(aaa, 0x12340205, CC_A, (CC_C | CC_A));
|
709 |
TEST_BCD(aaa, 0x12340306, CC_A, (CC_C | CC_A));
|
710 |
TEST_BCD(aaa, 0x1234040a, CC_A, (CC_C | CC_A));
|
711 |
TEST_BCD(aaa, 0x123405fa, CC_A, (CC_C | CC_A));
|
712 |
TEST_BCD(aaa, 0x12340205, 0, (CC_C | CC_A)); |
713 |
TEST_BCD(aaa, 0x12340306, 0, (CC_C | CC_A)); |
714 |
TEST_BCD(aaa, 0x1234040a, 0, (CC_C | CC_A)); |
715 |
TEST_BCD(aaa, 0x123405fa, 0, (CC_C | CC_A)); |
716 |
|
717 |
TEST_BCD(aas, 0x12340205, CC_A, (CC_C | CC_A));
|
718 |
TEST_BCD(aas, 0x12340306, CC_A, (CC_C | CC_A));
|
719 |
TEST_BCD(aas, 0x1234040a, CC_A, (CC_C | CC_A));
|
720 |
TEST_BCD(aas, 0x123405fa, CC_A, (CC_C | CC_A));
|
721 |
TEST_BCD(aas, 0x12340205, 0, (CC_C | CC_A)); |
722 |
TEST_BCD(aas, 0x12340306, 0, (CC_C | CC_A)); |
723 |
TEST_BCD(aas, 0x1234040a, 0, (CC_C | CC_A)); |
724 |
TEST_BCD(aas, 0x123405fa, 0, (CC_C | CC_A)); |
725 |
|
726 |
TEST_BCD(aam, 0x12340547, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));
|
727 |
TEST_BCD(aad, 0x12340407, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));
|
728 |
} |
729 |
|
730 |
#define TEST_XCHG(op, size, opconst)\
|
731 |
{\ |
732 |
int op0, op1;\
|
733 |
op0 = 0x12345678;\
|
734 |
op1 = 0xfbca7654;\
|
735 |
asm(#op " %" size "0, %" size "1" \ |
736 |
: "=q" (op0), opconst (op1) \
|
737 |
: "0" (op0), "1" (op1));\ |
738 |
printf("%-10s A=%08x B=%08x\n",\
|
739 |
#op, op0, op1);\
|
740 |
} |
741 |
|
742 |
#define TEST_CMPXCHG(op, size, opconst, eax)\
|
743 |
{\ |
744 |
int op0, op1;\
|
745 |
op0 = 0x12345678;\
|
746 |
op1 = 0xfbca7654;\
|
747 |
asm(#op " %" size "0, %" size "1" \ |
748 |
: "=q" (op0), opconst (op1) \
|
749 |
: "0" (op0), "1" (op1), "a" (eax));\ |
750 |
printf("%-10s EAX=%08x A=%08x C=%08x\n",\
|
751 |
#op, eax, op0, op1);\
|
752 |
} |
753 |
|
754 |
void test_xchg(void) |
755 |
{ |
756 |
TEST_XCHG(xchgl, "", "=q"); |
757 |
TEST_XCHG(xchgw, "w", "=q"); |
758 |
TEST_XCHG(xchgb, "b", "=q"); |
759 |
|
760 |
TEST_XCHG(xchgl, "", "=m"); |
761 |
TEST_XCHG(xchgw, "w", "=m"); |
762 |
TEST_XCHG(xchgb, "b", "=m"); |
763 |
|
764 |
TEST_XCHG(xaddl, "", "=q"); |
765 |
TEST_XCHG(xaddw, "w", "=q"); |
766 |
TEST_XCHG(xaddb, "b", "=q"); |
767 |
|
768 |
TEST_XCHG(xaddl, "", "=m"); |
769 |
TEST_XCHG(xaddw, "w", "=m"); |
770 |
TEST_XCHG(xaddb, "b", "=m"); |
771 |
|
772 |
TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfbca7654); |
773 |
TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfbca7654); |
774 |
TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfbca7654); |
775 |
|
776 |
TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfffefdfc); |
777 |
TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfffefdfc); |
778 |
TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfffefdfc); |
779 |
|
780 |
TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfbca7654); |
781 |
TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfbca7654); |
782 |
TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfbca7654); |
783 |
|
784 |
TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc); |
785 |
TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc); |
786 |
TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc); |
787 |
} |
788 |
|
789 |
/**********************************************/
|
790 |
/* segmentation tests */
|
791 |
|
792 |
#include <asm/ldt.h> |
793 |
#include <linux/unistd.h> |
794 |
|
795 |
_syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount) |
796 |
|
797 |
uint8_t seg_data1[4096];
|
798 |
uint8_t seg_data2[4096];
|
799 |
|
800 |
#define MK_SEL(n) (((n) << 3) | 7) |
801 |
|
802 |
#define TEST_LR(op, size, seg, mask)\
|
803 |
{\ |
804 |
int res, res2;\
|
805 |
res = 0x12345678;\
|
806 |
asm (op " %" size "2, %" size "0\n" \ |
807 |
"movl $0, %1\n"\
|
808 |
"jnz 1f\n"\
|
809 |
"movl $1, %1\n"\
|
810 |
"1:\n"\
|
811 |
: "=r" (res), "=r" (res2) : "m" (seg), "0" (res));\ |
812 |
printf(op ": Z=%d %08x\n", res2, res & ~(mask));\
|
813 |
} |
814 |
|
815 |
/* NOTE: we use Linux modify_ldt syscall */
|
816 |
void test_segs(void) |
817 |
{ |
818 |
struct modify_ldt_ldt_s ldt;
|
819 |
long long ldt_table[3]; |
820 |
int res, res2;
|
821 |
char tmp;
|
822 |
struct {
|
823 |
uint32_t offset; |
824 |
uint16_t seg; |
825 |
} __attribute__((packed)) segoff; |
826 |
|
827 |
ldt.entry_number = 1;
|
828 |
ldt.base_addr = (unsigned long)&seg_data1; |
829 |
ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
830 |
ldt.seg_32bit = 1;
|
831 |
ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
832 |
ldt.read_exec_only = 0;
|
833 |
ldt.limit_in_pages = 1;
|
834 |
ldt.seg_not_present = 0;
|
835 |
ldt.useable = 1;
|
836 |
modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
837 |
|
838 |
ldt.entry_number = 2;
|
839 |
ldt.base_addr = (unsigned long)&seg_data2; |
840 |
ldt.limit = (sizeof(seg_data2) + 0xfff) >> 12; |
841 |
ldt.seg_32bit = 1;
|
842 |
ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
843 |
ldt.read_exec_only = 0;
|
844 |
ldt.limit_in_pages = 1;
|
845 |
ldt.seg_not_present = 0;
|
846 |
ldt.useable = 1;
|
847 |
modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
848 |
|
849 |
modify_ldt(0, &ldt_table, sizeof(ldt_table)); /* read ldt entries */ |
850 |
#if 0
|
851 |
{
|
852 |
int i;
|
853 |
for(i=0;i<3;i++)
|
854 |
printf("%d: %016Lx\n", i, ldt_table[i]);
|
855 |
}
|
856 |
#endif
|
857 |
/* do some tests with fs or gs */
|
858 |
asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
859 |
|
860 |
seg_data1[1] = 0xaa; |
861 |
seg_data2[1] = 0x55; |
862 |
|
863 |
asm volatile ("fs movzbl 0x1, %0" : "=r" (res)); |
864 |
printf("FS[1] = %02x\n", res);
|
865 |
|
866 |
asm volatile ("pushl %%gs\n" |
867 |
"movl %1, %%gs\n"
|
868 |
"gs movzbl 0x1, %0\n"
|
869 |
"popl %%gs\n"
|
870 |
: "=r" (res)
|
871 |
: "r" (MK_SEL(2))); |
872 |
printf("GS[1] = %02x\n", res);
|
873 |
|
874 |
/* tests with ds/ss (implicit segment case) */
|
875 |
tmp = 0xa5;
|
876 |
asm volatile ("pushl %%ebp\n\t" |
877 |
"pushl %%ds\n\t"
|
878 |
"movl %2, %%ds\n\t"
|
879 |
"movl %3, %%ebp\n\t"
|
880 |
"movzbl 0x1, %0\n\t"
|
881 |
"movzbl (%%ebp), %1\n\t"
|
882 |
"popl %%ds\n\t"
|
883 |
"popl %%ebp\n\t"
|
884 |
: "=r" (res), "=r" (res2) |
885 |
: "r" (MK_SEL(1)), "r" (&tmp)); |
886 |
printf("DS[1] = %02x\n", res);
|
887 |
printf("SS[tmp] = %02x\n", res2);
|
888 |
|
889 |
segoff.seg = MK_SEL(2);
|
890 |
segoff.offset = 0xabcdef12;
|
891 |
asm volatile("lfs %2, %0\n\t" |
892 |
"movl %%fs, %1\n\t"
|
893 |
: "=r" (res), "=g" (res2) |
894 |
: "m" (segoff));
|
895 |
printf("FS:reg = %04x:%08x\n", res2, res);
|
896 |
|
897 |
TEST_LR("larw", "w", MK_SEL(2), 0x0100); |
898 |
TEST_LR("larl", "", MK_SEL(2), 0x0100); |
899 |
TEST_LR("lslw", "w", MK_SEL(2), 0); |
900 |
TEST_LR("lsll", "", MK_SEL(2), 0); |
901 |
|
902 |
TEST_LR("larw", "w", 0xfff8, 0); |
903 |
TEST_LR("larl", "", 0xfff8, 0); |
904 |
TEST_LR("lslw", "w", 0xfff8, 0); |
905 |
TEST_LR("lsll", "", 0xfff8, 0); |
906 |
} |
907 |
|
908 |
/* 16 bit code test */
|
909 |
extern char code16_start, code16_end; |
910 |
extern char code16_func1; |
911 |
extern char code16_func2; |
912 |
extern char code16_func3; |
913 |
|
914 |
void test_code16(void) |
915 |
{ |
916 |
struct modify_ldt_ldt_s ldt;
|
917 |
int res, res2;
|
918 |
|
919 |
/* build a code segment */
|
920 |
ldt.entry_number = 1;
|
921 |
ldt.base_addr = (unsigned long)&code16_start; |
922 |
ldt.limit = &code16_end - &code16_start; |
923 |
ldt.seg_32bit = 0;
|
924 |
ldt.contents = MODIFY_LDT_CONTENTS_CODE; |
925 |
ldt.read_exec_only = 0;
|
926 |
ldt.limit_in_pages = 0;
|
927 |
ldt.seg_not_present = 0;
|
928 |
ldt.useable = 1;
|
929 |
modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
930 |
|
931 |
/* call the first function */
|
932 |
asm volatile ("lcall %1, %2" |
933 |
: "=a" (res)
|
934 |
: "i" (MK_SEL(1)), "i" (&code16_func1): "memory", "cc"); |
935 |
printf("func1() = 0x%08x\n", res);
|
936 |
asm volatile ("lcall %2, %3" |
937 |
: "=a" (res), "=c" (res2) |
938 |
: "i" (MK_SEL(1)), "i" (&code16_func2): "memory", "cc"); |
939 |
printf("func2() = 0x%08x spdec=%d\n", res, res2);
|
940 |
asm volatile ("lcall %1, %2" |
941 |
: "=a" (res)
|
942 |
: "i" (MK_SEL(1)), "i" (&code16_func3): "memory", "cc"); |
943 |
printf("func3() = 0x%08x\n", res);
|
944 |
} |
945 |
|
946 |
extern char func_lret32; |
947 |
extern char func_iret32; |
948 |
|
949 |
void test_misc(void) |
950 |
{ |
951 |
char table[256]; |
952 |
int res, i;
|
953 |
|
954 |
for(i=0;i<256;i++) table[i] = 256 - i; |
955 |
res = 0x12345678;
|
956 |
asm ("xlat" : "=a" (res) : "b" (table), "0" (res)); |
957 |
printf("xlat: EAX=%08x\n", res);
|
958 |
|
959 |
asm volatile ("pushl %%cs ; call %1" |
960 |
: "=a" (res)
|
961 |
: "m" (func_lret32): "memory", "cc"); |
962 |
printf("func_lret32=%x\n", res);
|
963 |
|
964 |
asm volatile ("pushfl ; pushl %%cs ; call %1" |
965 |
: "=a" (res)
|
966 |
: "m" (func_iret32): "memory", "cc"); |
967 |
printf("func_iret32=%x\n", res);
|
968 |
|
969 |
/* specific popl test */
|
970 |
asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popl (%%esp) ; popl %0" |
971 |
: "=g" (res));
|
972 |
printf("popl esp=%x\n", res);
|
973 |
|
974 |
/* specific popw test */
|
975 |
asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popw (%%esp) ; addl $2, %%esp ; popl %0" |
976 |
: "=g" (res));
|
977 |
printf("popw esp=%x\n", res);
|
978 |
} |
979 |
|
980 |
uint8_t str_buffer[4096];
|
981 |
|
982 |
#define TEST_STRING1(OP, size, DF, REP)\
|
983 |
{\ |
984 |
int esi, edi, eax, ecx, eflags;\
|
985 |
\ |
986 |
esi = (long)(str_buffer + sizeof(str_buffer) / 2);\ |
987 |
edi = (long)(str_buffer + sizeof(str_buffer) / 2) + 16;\ |
988 |
eax = 0x12345678;\
|
989 |
ecx = 17;\
|
990 |
\ |
991 |
asm volatile ("pushl $0\n\t"\ |
992 |
"popf\n\t"\
|
993 |
DF "\n\t"\
|
994 |
REP #OP size "\n\t"\ |
995 |
"cld\n\t"\
|
996 |
"pushf\n\t"\
|
997 |
"popl %4\n\t"\
|
998 |
: "=S" (esi), "=D" (edi), "=a" (eax), "=c" (ecx), "=g" (eflags)\ |
999 |
: "0" (esi), "1" (edi), "2" (eax), "3" (ecx));\ |
1000 |
printf("%-10s ESI=%08x EDI=%08x EAX=%08x ECX=%08x EFL=%04x\n",\
|
1001 |
REP #OP size, esi, edi, eax, ecx,\
|
1002 |
eflags & (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));\ |
1003 |
} |
1004 |
|
1005 |
#define TEST_STRING(OP, REP)\
|
1006 |
TEST_STRING1(OP, "b", "", REP);\ |
1007 |
TEST_STRING1(OP, "w", "", REP);\ |
1008 |
TEST_STRING1(OP, "l", "", REP);\ |
1009 |
TEST_STRING1(OP, "b", "std", REP);\ |
1010 |
TEST_STRING1(OP, "w", "std", REP);\ |
1011 |
TEST_STRING1(OP, "l", "std", REP) |
1012 |
|
1013 |
void test_string(void) |
1014 |
{ |
1015 |
int i;
|
1016 |
for(i = 0;i < sizeof(str_buffer); i++) |
1017 |
str_buffer[i] = i + 0x56;
|
1018 |
TEST_STRING(stos, "");
|
1019 |
TEST_STRING(stos, "rep ");
|
1020 |
TEST_STRING(lods, ""); /* to verify stos */ |
1021 |
TEST_STRING(lods, "rep ");
|
1022 |
TEST_STRING(movs, "");
|
1023 |
TEST_STRING(movs, "rep ");
|
1024 |
TEST_STRING(lods, ""); /* to verify stos */ |
1025 |
|
1026 |
/* XXX: better tests */
|
1027 |
TEST_STRING(scas, "");
|
1028 |
TEST_STRING(scas, "repz ");
|
1029 |
TEST_STRING(scas, "repnz ");
|
1030 |
TEST_STRING(cmps, "");
|
1031 |
TEST_STRING(cmps, "repz ");
|
1032 |
TEST_STRING(cmps, "repnz ");
|
1033 |
} |
1034 |
|
1035 |
/* VM86 test */
|
1036 |
|
1037 |
static inline void set_bit(uint8_t *a, unsigned int bit) |
1038 |
{ |
1039 |
a[bit / 8] |= (1 << (bit % 8)); |
1040 |
} |
1041 |
|
1042 |
static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg) |
1043 |
{ |
1044 |
return (uint8_t *)((seg << 4) + (reg & 0xffff)); |
1045 |
} |
1046 |
|
1047 |
static inline void pushw(struct vm86_regs *r, int val) |
1048 |
{ |
1049 |
r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff); |
1050 |
*(uint16_t *)seg_to_linear(r->ss, r->esp) = val; |
1051 |
} |
1052 |
|
1053 |
#undef __syscall_return
|
1054 |
#define __syscall_return(type, res) \
|
1055 |
do { \
|
1056 |
return (type) (res); \
|
1057 |
} while (0) |
1058 |
|
1059 |
_syscall2(int, vm86, int, func, struct vm86plus_struct *, v86) |
1060 |
|
1061 |
extern char vm86_code_start; |
1062 |
extern char vm86_code_end; |
1063 |
|
1064 |
#define VM86_CODE_CS 0x100 |
1065 |
#define VM86_CODE_IP 0x100 |
1066 |
|
1067 |
void test_vm86(void) |
1068 |
{ |
1069 |
struct vm86plus_struct ctx;
|
1070 |
struct vm86_regs *r;
|
1071 |
uint8_t *vm86_mem; |
1072 |
int seg, ret;
|
1073 |
|
1074 |
vm86_mem = mmap((void *)0x00000000, 0x110000, |
1075 |
PROT_WRITE | PROT_READ | PROT_EXEC, |
1076 |
MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0); |
1077 |
if (vm86_mem == MAP_FAILED) {
|
1078 |
printf("ERROR: could not map vm86 memory");
|
1079 |
return;
|
1080 |
} |
1081 |
memset(&ctx, 0, sizeof(ctx)); |
1082 |
|
1083 |
/* init basic registers */
|
1084 |
r = &ctx.regs; |
1085 |
r->eip = VM86_CODE_IP; |
1086 |
r->esp = 0xfffe;
|
1087 |
seg = VM86_CODE_CS; |
1088 |
r->cs = seg; |
1089 |
r->ss = seg; |
1090 |
r->ds = seg; |
1091 |
r->es = seg; |
1092 |
r->fs = seg; |
1093 |
r->gs = seg; |
1094 |
r->eflags = VIF_MASK; |
1095 |
|
1096 |
/* move code to proper address. We use the same layout as a .com
|
1097 |
dos program. */
|
1098 |
memcpy(vm86_mem + (VM86_CODE_CS << 4) + VM86_CODE_IP,
|
1099 |
&vm86_code_start, &vm86_code_end - &vm86_code_start); |
1100 |
|
1101 |
/* mark int 0x21 as being emulated */
|
1102 |
set_bit((uint8_t *)&ctx.int_revectored, 0x21);
|
1103 |
|
1104 |
for(;;) {
|
1105 |
ret = vm86(VM86_ENTER, &ctx); |
1106 |
switch(VM86_TYPE(ret)) {
|
1107 |
case VM86_INTx:
|
1108 |
{ |
1109 |
int int_num, ah;
|
1110 |
|
1111 |
int_num = VM86_ARG(ret); |
1112 |
if (int_num != 0x21) |
1113 |
goto unknown_int;
|
1114 |
ah = (r->eax >> 8) & 0xff; |
1115 |
switch(ah) {
|
1116 |
case 0x00: /* exit */ |
1117 |
goto the_end;
|
1118 |
case 0x02: /* write char */ |
1119 |
{ |
1120 |
uint8_t c = r->edx; |
1121 |
putchar(c); |
1122 |
} |
1123 |
break;
|
1124 |
case 0x09: /* write string */ |
1125 |
{ |
1126 |
uint8_t c, *ptr; |
1127 |
ptr = seg_to_linear(r->ds, r->edx); |
1128 |
for(;;) {
|
1129 |
c = *ptr++; |
1130 |
if (c == '$') |
1131 |
break;
|
1132 |
putchar(c); |
1133 |
} |
1134 |
r->eax = (r->eax & ~0xff) | '$'; |
1135 |
} |
1136 |
break;
|
1137 |
case 0xff: /* extension: write hex number in edx */ |
1138 |
printf("%08x\n", (int)r->edx); |
1139 |
break;
|
1140 |
default:
|
1141 |
unknown_int:
|
1142 |
printf("unsupported int 0x%02x\n", int_num);
|
1143 |
goto the_end;
|
1144 |
} |
1145 |
} |
1146 |
break;
|
1147 |
case VM86_SIGNAL:
|
1148 |
/* a signal came, we just ignore that */
|
1149 |
break;
|
1150 |
case VM86_STI:
|
1151 |
break;
|
1152 |
default:
|
1153 |
printf("ERROR: unhandled vm86 return code (0x%x)\n", ret);
|
1154 |
goto the_end;
|
1155 |
} |
1156 |
} |
1157 |
the_end:
|
1158 |
printf("VM86 end\n");
|
1159 |
munmap(vm86_mem, 0x110000);
|
1160 |
} |
1161 |
|
1162 |
/* exception tests */
|
1163 |
#ifndef REG_EAX
|
1164 |
#define REG_EAX EAX
|
1165 |
#define REG_EBX EBX
|
1166 |
#define REG_ECX ECX
|
1167 |
#define REG_EDX EDX
|
1168 |
#define REG_ESI ESI
|
1169 |
#define REG_EDI EDI
|
1170 |
#define REG_EBP EBP
|
1171 |
#define REG_ESP ESP
|
1172 |
#define REG_EIP EIP
|
1173 |
#define REG_EFL EFL
|
1174 |
#define REG_TRAPNO TRAPNO
|
1175 |
#define REG_ERR ERR
|
1176 |
#endif
|
1177 |
|
1178 |
jmp_buf jmp_env; |
1179 |
int v1;
|
1180 |
int tab[2]; |
1181 |
|
1182 |
void sig_handler(int sig, siginfo_t *info, void *puc) |
1183 |
{ |
1184 |
struct ucontext *uc = puc;
|
1185 |
|
1186 |
printf("si_signo=%d si_errno=%d si_code=%d",
|
1187 |
info->si_signo, info->si_errno, info->si_code); |
1188 |
printf(" si_addr=0x%08lx",
|
1189 |
(unsigned long)info->si_addr); |
1190 |
printf("\n");
|
1191 |
|
1192 |
printf("trapno=0x%02x err=0x%08x",
|
1193 |
uc->uc_mcontext.gregs[REG_TRAPNO], |
1194 |
uc->uc_mcontext.gregs[REG_ERR]); |
1195 |
printf(" EIP=0x%08x", uc->uc_mcontext.gregs[REG_EIP]);
|
1196 |
printf("\n");
|
1197 |
longjmp(jmp_env, 1);
|
1198 |
} |
1199 |
|
1200 |
void test_exceptions(void) |
1201 |
{ |
1202 |
struct modify_ldt_ldt_s ldt;
|
1203 |
struct sigaction act;
|
1204 |
volatile int val; |
1205 |
|
1206 |
act.sa_sigaction = sig_handler; |
1207 |
sigemptyset(&act.sa_mask); |
1208 |
act.sa_flags = SA_SIGINFO; |
1209 |
sigaction(SIGFPE, &act, NULL);
|
1210 |
sigaction(SIGILL, &act, NULL);
|
1211 |
sigaction(SIGSEGV, &act, NULL);
|
1212 |
sigaction(SIGBUS, &act, NULL);
|
1213 |
sigaction(SIGTRAP, &act, NULL);
|
1214 |
|
1215 |
/* test division by zero reporting */
|
1216 |
printf("DIVZ exception:\n");
|
1217 |
if (setjmp(jmp_env) == 0) { |
1218 |
/* now divide by zero */
|
1219 |
v1 = 0;
|
1220 |
v1 = 2 / v1;
|
1221 |
} |
1222 |
|
1223 |
printf("BOUND exception:\n");
|
1224 |
if (setjmp(jmp_env) == 0) { |
1225 |
/* bound exception */
|
1226 |
tab[0] = 1; |
1227 |
tab[1] = 10; |
1228 |
asm volatile ("bound %0, %1" : : "r" (11), "m" (tab)); |
1229 |
} |
1230 |
|
1231 |
printf("segment exceptions:\n");
|
1232 |
if (setjmp(jmp_env) == 0) { |
1233 |
/* load an invalid segment */
|
1234 |
asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 1)); |
1235 |
} |
1236 |
if (setjmp(jmp_env) == 0) { |
1237 |
/* null data segment is valid */
|
1238 |
asm volatile ("movl %0, %%fs" : : "r" (3)); |
1239 |
/* null stack segment */
|
1240 |
asm volatile ("movl %0, %%ss" : : "r" (3)); |
1241 |
} |
1242 |
|
1243 |
ldt.entry_number = 1;
|
1244 |
ldt.base_addr = (unsigned long)&seg_data1; |
1245 |
ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
1246 |
ldt.seg_32bit = 1;
|
1247 |
ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
1248 |
ldt.read_exec_only = 0;
|
1249 |
ldt.limit_in_pages = 1;
|
1250 |
ldt.seg_not_present = 1;
|
1251 |
ldt.useable = 1;
|
1252 |
modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
1253 |
|
1254 |
if (setjmp(jmp_env) == 0) { |
1255 |
/* segment not present */
|
1256 |
asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
1257 |
} |
1258 |
|
1259 |
/* test SEGV reporting */
|
1260 |
printf("PF exception:\n");
|
1261 |
if (setjmp(jmp_env) == 0) { |
1262 |
val = 1;
|
1263 |
/* we add a nop to test a weird PC retrieval case */
|
1264 |
asm volatile ("nop"); |
1265 |
/* now store in an invalid address */
|
1266 |
*(char *)0x1234 = 1; |
1267 |
} |
1268 |
|
1269 |
/* test SEGV reporting */
|
1270 |
printf("PF exception:\n");
|
1271 |
if (setjmp(jmp_env) == 0) { |
1272 |
val = 1;
|
1273 |
/* read from an invalid address */
|
1274 |
v1 = *(char *)0x1234; |
1275 |
} |
1276 |
|
1277 |
/* test illegal instruction reporting */
|
1278 |
printf("UD2 exception:\n");
|
1279 |
if (setjmp(jmp_env) == 0) { |
1280 |
/* now execute an invalid instruction */
|
1281 |
asm volatile("ud2"); |
1282 |
} |
1283 |
|
1284 |
printf("INT exception:\n");
|
1285 |
if (setjmp(jmp_env) == 0) { |
1286 |
asm volatile ("int $0xfd"); |
1287 |
} |
1288 |
if (setjmp(jmp_env) == 0) { |
1289 |
asm volatile ("int $0x01"); |
1290 |
} |
1291 |
if (setjmp(jmp_env) == 0) { |
1292 |
asm volatile (".byte 0xcd, 0x03"); |
1293 |
} |
1294 |
if (setjmp(jmp_env) == 0) { |
1295 |
asm volatile ("int $0x04"); |
1296 |
} |
1297 |
if (setjmp(jmp_env) == 0) { |
1298 |
asm volatile ("int $0x05"); |
1299 |
} |
1300 |
|
1301 |
printf("INT3 exception:\n");
|
1302 |
if (setjmp(jmp_env) == 0) { |
1303 |
asm volatile ("int3"); |
1304 |
} |
1305 |
|
1306 |
printf("CLI exception:\n");
|
1307 |
if (setjmp(jmp_env) == 0) { |
1308 |
asm volatile ("cli"); |
1309 |
} |
1310 |
|
1311 |
printf("STI exception:\n");
|
1312 |
if (setjmp(jmp_env) == 0) { |
1313 |
asm volatile ("cli"); |
1314 |
} |
1315 |
|
1316 |
printf("INTO exception:\n");
|
1317 |
if (setjmp(jmp_env) == 0) { |
1318 |
/* overflow exception */
|
1319 |
asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff)); |
1320 |
} |
1321 |
|
1322 |
printf("OUTB exception:\n");
|
1323 |
if (setjmp(jmp_env) == 0) { |
1324 |
asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0)); |
1325 |
} |
1326 |
|
1327 |
printf("INB exception:\n");
|
1328 |
if (setjmp(jmp_env) == 0) { |
1329 |
asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321)); |
1330 |
} |
1331 |
|
1332 |
printf("REP OUTSB exception:\n");
|
1333 |
if (setjmp(jmp_env) == 0) { |
1334 |
asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1)); |
1335 |
} |
1336 |
|
1337 |
printf("REP INSB exception:\n");
|
1338 |
if (setjmp(jmp_env) == 0) { |
1339 |
asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1)); |
1340 |
} |
1341 |
|
1342 |
printf("HLT exception:\n");
|
1343 |
if (setjmp(jmp_env) == 0) { |
1344 |
asm volatile ("hlt"); |
1345 |
} |
1346 |
|
1347 |
printf("single step exception:\n");
|
1348 |
val = 0;
|
1349 |
if (setjmp(jmp_env) == 0) { |
1350 |
asm volatile ("pushf\n" |
1351 |
"orl $0x00100, (%%esp)\n"
|
1352 |
"popf\n"
|
1353 |
"movl $0xabcd, %0\n"
|
1354 |
"movl $0x0, %0\n" : "=m" (val) : : "cc", "memory"); |
1355 |
} |
1356 |
printf("val=0x%x\n", val);
|
1357 |
} |
1358 |
|
1359 |
/* self modifying code test */
|
1360 |
uint8_t code[] = { |
1361 |
0xb8, 0x1, 0x00, 0x00, 0x00, /* movl $1, %eax */ |
1362 |
0xc3, /* ret */ |
1363 |
}; |
1364 |
|
1365 |
typedef int FuncType(void); |
1366 |
|
1367 |
void test_self_modifying_code(void) |
1368 |
{ |
1369 |
int i;
|
1370 |
|
1371 |
printf("self modifying code:\n");
|
1372 |
printf("func1 = 0x%x\n", ((FuncType *)code)());
|
1373 |
for(i = 2; i <= 4; i++) { |
1374 |
code[1] = i;
|
1375 |
printf("func%d = 0x%x\n", i, ((FuncType *)code)());
|
1376 |
} |
1377 |
} |
1378 |
|
1379 |
static void *call_end __init_call = NULL; |
1380 |
|
1381 |
int main(int argc, char **argv) |
1382 |
{ |
1383 |
void **ptr;
|
1384 |
void (*func)(void); |
1385 |
|
1386 |
ptr = &call_start + 1;
|
1387 |
while (*ptr != NULL) { |
1388 |
func = *ptr++; |
1389 |
func(); |
1390 |
} |
1391 |
test_bsx(); |
1392 |
test_mul(); |
1393 |
test_jcc(); |
1394 |
test_floats(); |
1395 |
test_bcd(); |
1396 |
test_xchg(); |
1397 |
test_string(); |
1398 |
test_misc(); |
1399 |
test_lea(); |
1400 |
test_segs(); |
1401 |
test_code16(); |
1402 |
test_vm86(); |
1403 |
test_exceptions(); |
1404 |
test_self_modifying_code(); |
1405 |
return 0; |
1406 |
} |