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> compile NEMU

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221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 22:17:25 up 6 days, 17:23,  1 user,  load average: 0.54, 0.69, 0.87
This commit is contained in:
tracer-ics2023
2024-09-23 22:17:28 +08:00
committed by zzy
parent 75665a3846
commit faa83bf770
1 changed files with 4 additions and 3 deletions
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7
nanos-lite/src/syscall.c
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@ -8,7 +8,7 @@ size_t _write(int fd, const void *buf, size_t count) {
for (size_t i = 0; i < count; i++) {
putch(((const char*)buf)[i]);
}
return 1;
return count;
}
void _sbrk(intptr_t increment) {
@ -22,11 +22,12 @@ void do_syscall(Context *c) {
a[2] = c->GPR3;
a[3] = c->GPR4;
TRACE("syscall %d: %s | %d | %s | %d", a[0], __syscall_names[a[0]], a[1], a[2], a[3]);
TRACE("syscall %d: %s", a[0], __syscall_names[a[0]]);
switch (a[0]) {
case SYS_yield: yield(); break;
case SYS_write: c->GPRx = _write(a[1], (void*)a[2], a[3]);
case SYS_write: c->GPRx = _write(a[1], (void*)a[2], a[3]); break;
case SYS_exit: halt(0); break;
default: panic("Unhandled syscall ID = %d", a[0]);
}
TRACE("syscall %d: %d done", a[0], c->GPRx);
}