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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
 23:24:31 up 6 days, 18:30,  1 user,  load average: 0.71, 1.03, 1.01
This commit is contained in:
tracer-ics2023
2024-09-23 23:24:33 +08:00
committed by zzy
parent f2326f888b
commit 821ada7970
1 changed files with 5 additions and 4 deletions
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9
nanos-lite/src/syscall.c
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@ -15,6 +15,7 @@ int _brk(void* addr) {
return 0;
}
#define CASE(syscall, ...) case _SYSCALL_NAME(syscall): __VA_ARGS__; break;
void do_syscall(Context *c) {
uintptr_t a[4];
a[0] = c->GPR1;
@ -24,10 +25,10 @@ void do_syscall(Context *c) {
TRACE("syscall %d: %s", a[0], __syscall_names[a[0]]);
switch (a[0]) {
case SYS_yield: yield(); break;
case SYS_write: c->GPRx = _write((int)a[1], (const char*)a[2], (size_t)a[3]); break;
case SYS_brk: c->GPRx = _brk((void*)a[1]); break;
case SYS_exit: halt(0); break;
CASE(yield, yield())
CASE(write, c->GPRx = _write((int)a[1], (const char*)a[2], (size_t)a[3]))
CASE(brk, c->GPRx = _brk((void*)a[1]))
CASE(exit, halt(0))
default: panic("Unhandled syscall ID = %d", a[0]);
}
}