blob: d4f49536b036a81f5cd0006f2fdc2415f24620f2 [file] [log] [blame]
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <malloc.h>
typedef unsigned char UChar;
typedef unsigned int UInt;
typedef unsigned long int UWord;
typedef unsigned long long int ULong;
typedef struct { UChar cs[40]; } Block;
void showBlock ( char* msg, Block* b )
{
int i;
printf(" %s ", msg);
for (i = 0; i < 40; i++)
printf("%02x", (UInt)b->cs[i]);
printf("\n");
}
UChar randUChar ( void )
{
static UInt seed = 80021;
seed = 1103515245 * seed + 12345;
return (seed >> 17) & 0xFF;
}
void randBlock ( Block* b )
{
int i;
UChar* p = (UChar*)b;
for (i = 0; i < sizeof(Block); i++)
p[i] = randUChar();
}
/* Generate a function test_NAME, that tests the given insn.
The insn may only mention (%eax) and esi. */
#define GEN_test_Monly(_name, _mem_form) \
\
__attribute__ ((noinline)) static void test_##_name ( void ) \
{ \
Block* b = memalign(32, sizeof(Block)); \
randBlock(b); \
printf("%s\n", #_name); \
showBlock("before", b); \
__asm__ __volatile__( \
"leal 16(%0),%%eax" "\n\t" \
"movl 24(%0),%%esi" "\n\t" \
_mem_form "\n\t" \
"movl %%esi, 32(%0)" "\n\t" \
: /*OUT*/ \
: /*IN*/"r"(b) \
: /*TRASH*/"esi","eax","memory","cc" \
); \
showBlock("after ", b); \
printf("\n"); \
free(b); \
}
GEN_test_Monly( MOVBE_RtoM_32, "movbel %%esi,1(%%eax)")
GEN_test_Monly( MOVBE_RtoM_16, "movbew %%si,1(%%eax)")
GEN_test_Monly( MOVBE_MtoR_32, "movbel 1(%%eax), %%esi")
GEN_test_Monly( MOVBE_MtoR_16, "movbew 1(%%eax), %%si")
int main ( void )
{
test_MOVBE_RtoM_32();
test_MOVBE_RtoM_16();
test_MOVBE_MtoR_32();
test_MOVBE_MtoR_16();
return 0;
}