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memory fixes

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This commit is contained in:
boreddevnl
2026-03-01 04:21:04 +01:00
parent a4e0a42042
commit c5c77ce734
12 changed files with 156 additions and 105 deletions
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31
src/kernel/syscall.c
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@@ -131,20 +131,12 @@ static void user_window_key(Window *win, char c) {
}
uint64_t syscall_handler_c(uint64_t syscall_num, uint64_t arg1, uint64_t arg2, uint64_t arg3, uint64_t arg4, uint64_t arg5) {
static uint64_t syscall_handler_inner(uint64_t syscall_num, uint64_t arg1, uint64_t arg2, uint64_t arg3, uint64_t arg4, uint64_t arg5) {
extern void cmd_write(const char *str);
extern void serial_write(const char *str);
extern void cmd_process_finished(void);
if (syscall_num == 1) { // SYS_WRITE
cmd_write((const char*)arg2);
} else if (syscall_num == 0 || syscall_num == 60) { // SYS_EXIT
uint64_t next_rsp = process_terminate_current();
extern void context_switch_to(uint64_t rsp);
context_switch_to(next_rsp);
// This point is never reached
while(1);
} else if (syscall_num == 3) { // SYS_GUI
int cmd = (int)arg1;
process_t *proc = process_get_current();
@@ -501,11 +493,7 @@ uint64_t syscall_handler_c(uint64_t syscall_num, uint64_t arg1, uint64_t arg2, u
serial_write((const char *)arg2);
return 0;
} else if (syscall_num == 10) { // SYS_KILL
// Simplified kill: just terminate current for now
uint64_t next_rsp = process_terminate_current();
extern void context_switch_to(uint64_t rsp);
context_switch_to(next_rsp);
while(1);
return 0; // Handled in outer
} else if (syscall_num == 9) { // SYS_SBRK
int incr = (int)arg1;
process_t *proc = process_get_current();
@@ -739,3 +727,18 @@ uint64_t syscall_handler_c(uint64_t syscall_num, uint64_t arg1, uint64_t arg2, u
return 0;
}
uint64_t syscall_handler_c(registers_t *regs) {
uint64_t syscall_num = regs->rax;
// Check for context-switching syscalls
if (syscall_num == 0 || syscall_num == 60 || syscall_num == 10) { // EXIT or KILL
return process_terminate_current();
}
// Normal syscalls
regs->rax = syscall_handler_inner(regs->rax, regs->rdi, regs->rsi, regs->rdx, regs->r10, regs->r8);
// Return current RSP to assembly wrapper
return (uint64_t)regs;
}