mirror of https://github.com/flysand7/ciabatta.git
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
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extern i64 _cia_start_thread(
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u64 flags,
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void *stack_base,
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int *parent_tid,
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int *child_tid,
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void *tls,
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int (*thread_fn)(void *ctx),
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void *ctx
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);
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static _RT_Status _rt_thread_current(_RT_Thread *thread) {
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thread->handle = (void *)((u64)__builtin_frame_address(0) & ~(cia_stack_size - 1));
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return _RT_STATUS_OK;
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}
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static _RT_Status _rt_thread_create(_RT_Thread *thread, int (*thread_fn)(void *ctx), void *ctx) {
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// Create the memory for stack
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u64 mmap_prot = PROT_READ|PROT_WRITE;
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u64 mmap_flags = MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE;
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void *stack_base = sys_mmap(0, 2*cia_stack_size, mmap_prot, mmap_flags, -1, 0);
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if((i64)stack_base < 0) {
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return _RT_ERROR_GENERIC;
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}
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void *stack = (u8*)stack_base + 2*cia_stack_size;
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// Find the TLS base and initialize the tls
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Cia_TCB *tcb = (void *)((u64)((u8 *)stack - 1) & ~(cia_stack_size - 1));
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tcb->stack_canary = 0x12345678deadbeef;
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u8 *tls_base = (u8 *)tcb - cia_tls_image_size;
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for(int i = 0; i < cia_tls_image_size; ++i) {
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tls_base[i] = ((u8 *)cia_tls_image_base)[i];
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}
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// Initialize the _RT_Thread handle, which would point to
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// the TCB
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thread->handle = tcb;
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// Create the new thread
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u64 flags = 0;
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// flags |= CLONE_CHILD_CLEARTID;
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// flags |= CLONE_PARENT_SETTID;
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flags |= CLONE_FS;
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flags |= CLONE_FILES;
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flags |= CLONE_SIGHAND;
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flags |= CLONE_THREAD;
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flags |= CLONE_VM;
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flags |= CLONE_SYSVSEM;
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int *child_tid = (int *)&tcb->thread_id;
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int *parent_tid = (int *)&tcb->parent_id;
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*child_tid = 1;
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*parent_tid = 0;
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i64 ret = _cia_start_thread(flags, stack, parent_tid, child_tid, 0, thread_fn, ctx);
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if(ret < 0) {
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return _RT_ERROR_GENERIC;
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}
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return _RT_STATUS_OK;
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}
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static _RT_Status _rt_thread_join(_RT_Thread *thread) {
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return _RT_ERROR_NOT_IMPLEMENTED;
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}
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static _RT_Status _rt_thread_detach(_RT_Thread *thread) {
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return _RT_ERROR_NOT_IMPLEMENTED;
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}
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static _RT_Status _rt_thread_terminate(_RT_Thread *thread) {
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return _RT_ERROR_NOT_IMPLEMENTED;
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}
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static _RT_Status _rt_thread_sleep(u64 time) {
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return _RT_ERROR_NOT_IMPLEMENTED;
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}
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static _RT_Status _rt_thread_get_timer_freq(u64 *freq) {
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return _RT_ERROR_NOT_IMPLEMENTED;
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}
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