test-i386-shift.h
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#define exec_op glue(exec_, OP)
#define exec_opl glue(glue(exec_, OP), l)
#define exec_opw glue(glue(exec_, OP), w)
#define exec_opb glue(glue(exec_, OP), b)
#define EXECSHIFT(size, res, s1, flags) \
asm ("push %4\n\t"\
"popf\n\t"\
stringify(OP) size " %%cl, %" size "0\n\t" \
"pushf\n\t"\
"popl %1\n\t"\
: "=q" (res), "=g" (flags)\
: "c" (s1), "0" (res), "1" (flags));
void exec_opl(int s0, int s1, int iflags)
{
int res, flags;
res = s0;
flags = iflags;
EXECSHIFT("", res, s1, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=%08x B=%08x R=%08x CCIN=%04x CC=%04x\n",
stringify(OP) "l", s0, s1, res, iflags, flags & CC_MASK);
}
void exec_opw(int s0, int s1, int iflags)
{
int res, flags;
res = s0;
flags = iflags;
EXECSHIFT("w", res, s1, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=%08x B=%08x R=%08x CCIN=%04x CC=%04x\n",
stringify(OP) "w", s0, s1, res, iflags, flags & CC_MASK);
}
void exec_opb(int s0, int s1, int iflags)
{
int res, flags;
res = s0;
flags = iflags;
EXECSHIFT("b", res, s1, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=%08x B=%08x R=%08x CCIN=%04x CC=%04x\n",
stringify(OP) "b", s0, s1, res, iflags, flags & CC_MASK);
}
void exec_op(int s0, int s1)
{
exec_opl(s0, s1, 0);
exec_opw(s0, s1, 0);
exec_opb(s0, s1, 0);
#ifdef OP_CC
exec_opl(s0, s1, CC_C);
exec_opw(s0, s1, CC_C);
exec_opb(s0, s1, CC_C);
#endif
}
void glue(test_, OP)(void)
{
int i;
for(i = 0; i < 32; i++)
exec_op(0x12345678, i);
for(i = 0; i < 32; i++)
exec_op(0x82345678, i);
}
void *glue(_test_, OP) __init_call = glue(test_, OP);
#undef OP
#undef OP_CC