Revision 51fe6890
| b/op-i386.c | ||
|---|---|---|
| 412 | 412 |
EDX = (EDX & 0xffff0000) | r; |
| 413 | 413 |
} |
| 414 | 414 |
|
| 415 |
#ifdef BUGGY_GCC_DIV64 |
|
| 416 |
/* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we |
|
| 417 |
call it from another function */ |
|
| 418 |
uint32_t div64(uint32_t *q_ptr, uint64_t num, uint32_t den) |
|
| 419 |
{
|
|
| 420 |
*q_ptr = num / den; |
|
| 421 |
return num % den; |
|
| 422 |
} |
|
| 423 |
|
|
| 424 |
int32_t idiv64(int32_t *q_ptr, int64_t num, int32_t den) |
|
| 425 |
{
|
|
| 426 |
*q_ptr = num / den; |
|
| 427 |
return num % den; |
|
| 428 |
} |
|
| 429 |
#endif |
|
| 430 |
|
|
| 415 | 431 |
void OPPROTO op_divl_EAX_T0(void) |
| 416 | 432 |
{
|
| 417 | 433 |
unsigned int den, q, r; |
| ... | ... | |
| 421 | 437 |
den = T0; |
| 422 | 438 |
if (den == 0) |
| 423 | 439 |
raise_exception(EXCP00_DIVZ); |
| 440 |
#ifdef BUGGY_GCC_DIV64 |
|
| 441 |
r = div64(&q, num, den); |
|
| 442 |
#else |
|
| 424 | 443 |
q = (num / den); |
| 425 | 444 |
r = (num % den); |
| 445 |
#endif |
|
| 426 | 446 |
EAX = q; |
| 427 | 447 |
EDX = r; |
| 428 | 448 |
} |
| ... | ... | |
| 436 | 456 |
den = T0; |
| 437 | 457 |
if (den == 0) |
| 438 | 458 |
raise_exception(EXCP00_DIVZ); |
| 459 |
#ifdef BUGGY_GCC_DIV64 |
|
| 460 |
r = idiv64(&q, num, den); |
|
| 461 |
#else |
|
| 439 | 462 |
q = (num / den); |
| 440 | 463 |
r = (num % den); |
| 464 |
#endif |
|
| 441 | 465 |
EAX = q; |
| 442 | 466 |
EDX = r; |
| 443 | 467 |
} |
| ... | ... | |
| 1503 | 1527 |
extern CPU86_LDouble ceil(CPU86_LDouble x); |
| 1504 | 1528 |
extern CPU86_LDouble rint(CPU86_LDouble x); |
| 1505 | 1529 |
|
| 1530 |
#if defined(__powerpc__) |
|
| 1531 |
extern CPU86_LDouble copysign(CPU86_LDouble, CPU86_LDouble); |
|
| 1532 |
|
|
| 1533 |
/* correct (but slow) PowerPC rint() (glibc version is incorrect) */ |
|
| 1534 |
double qemu_rint(double x) |
|
| 1535 |
{
|
|
| 1536 |
double y = 4503599627370496.0; |
|
| 1537 |
if (fabs(x) >= y) |
|
| 1538 |
return x; |
|
| 1539 |
if (x < 0) |
|
| 1540 |
y = -y; |
|
| 1541 |
y = (x + y) - y; |
|
| 1542 |
if (y == 0.0) |
|
| 1543 |
y = copysign(y, x); |
|
| 1544 |
return y; |
|
| 1545 |
} |
|
| 1546 |
|
|
| 1547 |
#define rint qemu_rint |
|
| 1548 |
#endif |
|
| 1549 |
|
|
| 1506 | 1550 |
#define RC_MASK 0xc00 |
| 1507 | 1551 |
#define RC_NEAR 0x000 |
| 1508 | 1552 |
#define RC_DOWN 0x400 |
Also available in: Unified diff