diff options
Diffstat (limited to 'kernel/src/scheduler/process.c')
| -rw-r--r-- | kernel/src/scheduler/process.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/kernel/src/scheduler/process.c b/kernel/src/scheduler/process.c index e69de29..e85cc11 100644 --- a/kernel/src/scheduler/process.c +++ b/kernel/src/scheduler/process.c @@ -0,0 +1,60 @@ +#include <types.h> +#include <regs.h> +#include <heap.h> +#include <scheduler.h> +#include <libk/list.h> +#include <process.h> + +process_t process_queue; +process_t *curr_process; + +void init_process(uint64_t priv_lvl, uint64_t rip, uint64_t rdi, uint64_t rsi, + uint64_t rdx) +{ + uint32_t stack_size = 32 * 1024; + uint64_t rsp = (uint64_t)kalloc(stack_size) + stack_size; + regs_t *regs = (regs_t *)(rsp + sizeof(regs_t)); + + regs->rax = 0; + regs->rbx = 0; + regs->rcx = 0; + regs->rdx = rdx; + regs->rdi = rdi; + regs->rsi = rsi; + regs->rsp = rsp; + regs->rbp = 0; + regs->r8 = 0; + regs->r9 = 0; + regs->r10 = 0; + regs->r11 = 0; + regs->r12 = 0; + regs->r13 = 0; + regs->r14 = 0; + regs->r15 = 0; + regs->rip = rip; + regs->rflags = 0; + regs->error = 0; + + if (priv_lvl == 0) { + regs->cs = 0x8; + regs->ss = 0x10; + regs->seg = 0x0010001000100010; + } else { + regs->cs = 0x23; + regs->ss = 0x1b; + regs->seg = 0x001b001b001b001b; + } + + process_t *new_process = (process_t *)kalloc(sizeof(process_t)); + add_to_list(&new_process->list, &process_queue.list, + process_queue.list.next); +} + +__attribute__((noreturn)) void context_switch(uint64_t irq_rsp) +{ + save_context_to_rsp(irq_rsp, curr_process->rsp); + + process_t *next_process = scheduler(); + + restore_context_from_rsp(next_process->rsp); +} |