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elf: working loader / syscall: introduce the syscall api.

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This commit is contained in:
RaphProductions 2025-05-09 12:19:32 +02:00
parent 2d4031eacc
commit 5afe37a798
12 changed files with 267 additions and 37 deletions
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18
kernel/src/sched/sched.c
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@ -11,6 +11,18 @@ sched_process *curr_proc;
int current_pid = 0;
int standby = 0;
void map_range_to_pagemap(pagemap_t *dest_pagemap, pagemap_t *src_pagemap, uint64_t start, uint64_t size, uint64_t flags)
{
for (uint64_t offset = 0; offset < size; offset += PMM_PAGE_SIZE)
{
uint64_t phys = virt_to_phys(src_pagemap, start + offset);
if (phys)
{
vmm_map(dest_pagemap, start + offset, phys, flags);
}
}
}
void sched_init() {
// TODO: It may be good to implement heap memory to save space.
@ -71,7 +83,7 @@ sched_process *sched_create(char *name, uint64_t entry_point, pagemap_t* pm, uin
proc->regs.ss = 0x30;
}
else if (flags == SCHED_USER_PROCESS) {
proc->regs.cs = 0x43; // Run in kernel mode
proc->regs.cs = 0x43; // Run in user mode
proc->regs.ss = 0x3B;
}
proc->regs.rflags = 0x202; // Enable interrupts
@ -83,6 +95,8 @@ sched_process *sched_create(char *name, uint64_t entry_point, pagemap_t* pm, uin
current_pid++;
map_range_to_pagemap(pm, vmm_kernel_pm, 0x1000, 0x10000, VMM_PRESENT | VMM_WRITABLE | VMM_USER);
if (standby) {
// Disable standby mode as there's actually something to
// run, now.
@ -90,7 +104,7 @@ sched_process *sched_create(char *name, uint64_t entry_point, pagemap_t* pm, uin
log("sched - Standby mode has been"
"disabled.\n");
}
log("sched - created process '%s' (pid: %d, rip: %p)\n", proc->name, proc->pid, proc->regs.rip);
return proc;
}