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Поддержка многопоточности
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@ -12,14 +12,14 @@
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#include <stdint.h>
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#define STACK_SIZE 8192 // 1MB
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#define STACK_SIZE 8192 // 8 килобайт на стек
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typedef struct task {
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uint64_t rax, rbx, rcx, rdx;
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uint64_t rsi, rdi, rsp, rbp;
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uint64_t cr3;
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uint64_t id;
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uint64_t ret;
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void *stack;
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struct task *last;
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@ -56,6 +56,7 @@ typedef void (*int_entry_t)(struct frame *state);
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void arch_init( );
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void task_init( );
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void task_switch(struct frame *state);
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uint64_t task_new_thread(void (*func)(void *));
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void cpu_init( );
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void gdt_init( );
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void pic_init( );
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@ -7,6 +7,7 @@
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*/
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#include <arch.h>
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#include <fb.h>
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#include <log.h>
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#include <mem.h>
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@ -14,7 +15,7 @@ static volatile uint64_t next_thread_id = 0;
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static task_t *last_task = NULL;
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static task_t *kernel_task = NULL;
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task_t *current_task = NULL;
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uint32_t *test_buf = NULL;
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extern uint64_t full_init;
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void task_switch_asm(task_t *, task_t *);
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@ -22,41 +23,39 @@ void task_switch_asm(task_t *, task_t *);
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void task_switch(struct frame *state) {
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UNUSED(state);
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// LOG("Смена потоков\n");
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asm volatile("cli");
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task_t *next = current_task->next;
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task_t *last = current_task;
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current_task = next;
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// LOG("Смена потоков 2\n");
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// LOG("Смена потоков %u->%u\n", last->id, next->id);
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outb(0x20, 0x20);
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task_switch_asm(last, next);
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asm volatile("sti");
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}
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uint64_t task_new_thread(void (*func)(void *), void *arg) {
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asm volatile("cli");
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uint64_t task_new_thread(void (*func)(void *)) {
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LOG("Выделение потока\n");
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uint64_t cr3;
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asm volatile("mov %%cr3, %0" : "=r"(cr3));
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uint64_t cr3;
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uint64_t *stack = mem_alloc(STACK_SIZE);
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task_t *new_task = mem_alloc(sizeof(task_t));
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asm volatile("mov %%cr3, %0" : "=r"(cr3));
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tool_memset(stack, 0, STACK_SIZE);
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tool_memset(new_task, 0, sizeof(task_t));
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uint64_t *stack_top = (uint64_t *)((uint64_t)stack + STACK_SIZE);
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*(--stack_top) = (uint64_t)arg;
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*(--stack_top) = (uint64_t)func;
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new_task->rsp = (uint64_t)new_task->stack + STACK_SIZE - sizeof(uint64_t) * 2;
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new_task->stack = stack;
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uint64_t stack_top = STACK_SIZE;
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stack[--stack_top] = (uint64_t)stack;
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stack[--stack_top] = (uint64_t)func;
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stack[--stack_top] = (uint64_t)0;
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new_task->rsp = (uint64_t)new_task->stack + sizeof(uint64_t) * stack_top;
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new_task->id = next_thread_id++;
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new_task->cr3 = cr3;
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new_task->last = current_task;
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new_task->next = current_task->next;
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@ -65,14 +64,11 @@ uint64_t task_new_thread(void (*func)(void *), void *arg) {
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LOG("Создан новый поток с ID: %u\n", new_task->id);
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if (full_init) {
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asm volatile("sti"); // Включаем прерывания
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}
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return new_task->id;
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}
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void dummy(uint64_t n) {
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void dummy( ) {
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LOG("\t\tПривет! Я поток: %u\n", current_task->id);
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for (;;) { asm volatile("hlt"); }
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}
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@ -91,6 +87,7 @@ void task_init( ) {
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kernel_task->id = next_thread_id++;
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kernel_task->rsp = rsp;
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kernel_task->cr3 = cr3;
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current_task = kernel_task;
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@ -99,7 +96,10 @@ void task_init( ) {
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last_task = kernel_task;
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// task_new_thread(dummy, 2 + 2);
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task_new_thread(dummy);
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task_new_thread(dummy);
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test_buf = mem_alloc(8 * 8 * sizeof(uint32_t));
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LOG("Потоки инициализированы\n");
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}
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@ -9,10 +9,11 @@ task_switch_asm:
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movq %rdi, 40(%rdi)
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movq %rsp, 48(%rdi)
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movq %rbp, 56(%rdi)
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movq %cr3, %rax
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movq %rax, 64(%rdi)
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movq 64(%rsi), %rax
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movq %rax, 64(%rdi)
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movq %rax, %cr3
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movq 56(%rsi), %rbp
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movq 48(%rsi), %rsp
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movq 40(%rsi), %rdi
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@ -22,5 +23,5 @@ task_switch_asm:
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movq (%rsi), %rax
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movq 32(%rsi), %rsi
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popfq
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retq
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sti
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retq
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@ -17,6 +17,11 @@
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uint64_t full_init = 0;
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void finally( ) {
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LOG("Готово! Для выхода из симуляции удерживайте: ESCAPE\n");
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for (;;) { asm volatile("hlt"); }
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}
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// Точка входа
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void _start( ) {
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asm volatile("cli");
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@ -33,17 +38,16 @@ void _start( ) {
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LOG("\t\t\t\t *** Дата сборки: %s %s ***\n", __DATE__, __TIME__);
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task_init( );
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pit_init( );
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mod_init( );
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pit_init( );
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task_init( );
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LOG("Готово! Для выхода из симуляции удерживайте: ESCAPE\n");
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task_new_thread(finally);
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full_init = 1;
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asm volatile("sti");
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mod_after_init( );
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// mod_after_init( );
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for (;;) { asm volatile("hlt"); }
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}
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