Imbus/neptune
1
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

CSRW/CSRS

Browse source
This commit is contained in:
Imbus 2026-01-03 20:12:44 +01:00
parent 0d7d09dda3
commit dd8aed04c7
2 changed files with 95 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

12
kern/start.c
View file

@ -50,6 +50,18 @@ void start() {
memory_sweep(heap_start, heap_end);
buddy_init(heap_start, heap_end);
spinlock_init(&sl);
/* Set previous privilege to S-mode, this causes mret to enter S-mode trap handler */
unsigned long x = r_mstatus();
x &= ~MSTATUS_MPP_MASK;
x |= MSTATUS_MPP_S;
w_mstatus(x);
/* Delegate all interrupts and exceptions to S-mode */
w_medeleg(~(uint64_t)0x0);
w_mideleg(~(uint64_t)0x0);
w_sie(r_sie() | SIE_SEIE | SIE_STIE | SIE_SSIE);
for (int i = 0; i < banner_len; i++) uart_putc(banner[i]);
__sync_synchronize();
hold = 0;