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Make more progress on aarch64

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Justine Tunney 2023-05-03 00:00:09 -07:00
parent 135080fd3e
commit aef9a69a60
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GPG key ID: BE714B4575D6E328
42 changed files with 563 additions and 387 deletions
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16
libc/runtime/fesetround.c
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@ -26,23 +26,13 @@
* @param mode may be FE_TONEAREST, FE_DOWNWARD, FE_UPWARD, or FE_TOWARDZERO
* @return 0 on success, or -1 on error
*/
int fesetround(int mode) {
uint16_t x87cw;
uint32_t ssecw;
switch (mode) {
int fesetround(int r) {
switch (r) {
case FE_TONEAREST:
case FE_DOWNWARD:
case FE_UPWARD:
case FE_TOWARDZERO:
asm("fnstcw\t%0" : "=m"(x87cw));
x87cw &= ~0x0c00;
x87cw |= mode;
asm volatile("fldcw\t%0" : /* no outputs */ : "m"(x87cw));
asm("stmxcsr\t%0" : "=m"(ssecw));
ssecw &= ~(0x0c00 << 3);
ssecw |= (mode << 3);
asm volatile("ldmxcsr\t%0" : /* no outputs */ : "m"(ssecw));
return 0;
return __fesetround(r);
default:
return -1;
}