1 2/* A test of the alternative (redundant) encodings for {inc,dec}{w,l}. */ 3 4#include "tests/asm.h" 5#include <stdio.h> 6 7int r1,r2,r3,r4,r5,r6,r7,r8,a1,a2; 8 9extern void foo ( void ); 10asm("\n" 11VG_SYM(foo) ":\n" 12"\tpushl $0\n" 13"\tpopfl\n" 14"\tmovl " VG_SYM(a1) ",%eax\n" 15"\tmovl " VG_SYM(a2) ",%edx\n" 16 17/* inc %eax */ 18"\t.byte 0xFF\n" 19"\t.byte 0xC0\n" 20 21"\tmovl %eax," VG_SYM(r1) "\n" 22"\tpushfl\n" 23"\tpopl " VG_SYM(r2) "\n" 24 25/* inc %dx */ 26"\t.byte 0x66\n" 27"\t.byte 0xFF\n" 28"\t.byte 0xC2\n" 29 30"\tmovl %edx," VG_SYM(r3) "\n" 31"\tpushfl\n" 32"\tpopl " VG_SYM(r4) "\n" 33 34/* dec %edx */ 35"\t.byte 0xFF\n" 36"\t.byte 0xCA\n" 37 38"\tmovl %edx," VG_SYM(r5) "\n" 39"\tpushfl\n" 40"\tpopl " VG_SYM(r6) "\n" 41 42/* dec %ax */ 43"\t.byte 0x66\n" 44"\t.byte 0xFF\n" 45"\t.byte 0xC8\n" 46 47"\tmovl %eax," VG_SYM(r7) "\n" 48"\tpushfl\n" 49"\tpopl " VG_SYM(r8) "\n" 50 51"\tret\n" 52); 53 54int main ( void ) 55{ 56 a1 = 0x77777777; 57 a2 = 0x88888888; 58 r1=r2=r3=r4=r5=r6=r7=r8=0; 59 foo(); 60 printf("0x%08x\n",r1); 61 printf("0x%08x\n",r2); 62 printf("0x%08x\n",r3); 63 printf("0x%08x\n",r4); 64 printf("0x%08x\n",r5); 65 printf("0x%08x\n",r6); 66 printf("0x%08x\n",r7); 67 printf("0x%08x\n",r8); 68 return 0; 69} 70