1 2 #include <stdio.h> 3 #include <stdlib.h> 4 #include <assert.h> 5 #include "tests/malloc.h" 6 7 typedef unsigned char UChar; 8 typedef unsigned int UInt; 9 typedef unsigned long int UWord; 10 typedef unsigned long long int ULong; 11 12 13 typedef struct { UChar cs[40]; } Block; 14 15 void showBlock ( char* msg, Block* b ) 16 { 17 int i; 18 printf(" %s ", msg); 19 for (i = 0; i < 40; i++) 20 printf("%02x", (UInt)b->cs[i]); 21 printf("\n"); 22 } 23 24 UChar randUChar ( void ) 25 { 26 static UInt seed = 80021; 27 seed = 1103515245 * seed + 12345; 28 return (seed >> 17) & 0xFF; 29 } 30 31 void randBlock ( Block* b ) 32 { 33 int i; 34 UChar* p = (UChar*)b; 35 for (i = 0; i < sizeof(Block); i++) 36 p[i] = randUChar(); 37 } 38 39 /* Generate a function test_NAME, that tests the given insn. 40 The insn may only mention (%eax) and esi. */ 41 42 #define GEN_test_Monly(_name, _mem_form) \ 43 \ 44 __attribute__ ((noinline)) static void test_##_name ( void ) \ 45 { \ 46 Block* b = memalign32(sizeof(Block)); \ 47 randBlock(b); \ 48 printf("%s\n", #_name); \ 49 showBlock("before", b); \ 50 __asm__ __volatile__( \ 51 "leal 16(%0),%%eax" "\n\t" \ 52 "movl 24(%0),%%esi" "\n\t" \ 53 _mem_form "\n\t" \ 54 "movl %%esi, 32(%0)" "\n\t" \ 55 : /*OUT*/ \ 56 : /*IN*/"r"(b) \ 57 : /*TRASH*/"esi","eax","memory","cc" \ 58 ); \ 59 showBlock("after ", b); \ 60 printf("\n"); \ 61 free(b); \ 62 } 63 64 GEN_test_Monly( MOVBE_RtoM_32, "movbel %%esi,1(%%eax)") 65 GEN_test_Monly( MOVBE_RtoM_16, "movbew %%si,1(%%eax)") 66 67 GEN_test_Monly( MOVBE_MtoR_32, "movbel 1(%%eax), %%esi") 68 GEN_test_Monly( MOVBE_MtoR_16, "movbew 1(%%eax), %%si") 69 70 int main ( void ) 71 { 72 test_MOVBE_RtoM_32(); 73 test_MOVBE_RtoM_16(); 74 test_MOVBE_MtoR_32(); 75 test_MOVBE_MtoR_16(); 76 return 0; 77 } 78
