Added posix code

conts/posix/mm0/include/task.h

@@ -0,0 +1,157 @@
+/*
+ * Thread control block.
+ *
+ * Copyright (C) 2007, 2008 Bahadir Balban
+ */
+#ifndef __TASK_H__
+#define __TASK_H__
+
+#include <l4/macros.h>
+#include <l4/types.h>
+#include INC_GLUE(memlayout.h)
+#include <l4/lib/list.h>
+#include <l4lib/arch/types.h>
+#include <l4lib/arch/syscalls.h>
+#include <l4lib/utcb.h>
+#include <lib/addr.h>
+#include <l4/api/kip.h>
+#include <exec.h>
+
+#define __TASKNAME__			__PAGERNAME__
+
+#define ARGS_MAX			DEFAULT_ENV_SIZE
+#define PATH_MAX			PAGE_SIZE
+
+#define TASK_FILES_MAX			32
+
+/* POSIX minimum is 4Kb */
+#define DEFAULT_ENV_SIZE		SZ_4K
+#define DEFAULT_STACK_SIZE		SZ_32K
+#define DEFAULT_SHPAGE_SIZE		PAGE_SIZE
+#define TASK_SIZE			0x10000000
+
+#define TCB_NO_SHARING				0
+#define	TCB_SHARED_VM				(1 << 0)
+#define	TCB_SHARED_FILES			(1 << 1)
+#define TCB_SHARED_FS				(1 << 2)
+#define TCB_SHARED_TGROUP			(1 << 3)
+#define TCB_SHARED_PARENT			(1 << 4)
+
+struct vm_file;
+
+struct file_descriptor {
+	unsigned long vnum;
+	unsigned long cursor;
+	struct vm_file *vmfile;
+};
+
+struct task_fd_head {
+	struct file_descriptor fd[TASK_FILES_MAX];
+	int tcb_refs;
+};
+
+struct task_vma_head {
+	struct link list;
+	int tcb_refs;
+};
+
+struct utcb_desc {
+	struct link list;
+	unsigned long utcb_base;
+	struct id_pool *slots;
+};
+
+struct utcb_head {
+	struct link list;
+	int tcb_refs;
+};
+
+
+/* Stores all task information that can be kept in userspace. */
+struct tcb {
+	/* Task list */
+	struct link list;
+
+	/* Fields for parent-child relations */
+	struct link child_ref;	/* Child ref in parent's list */
+	struct link children;	/* List of children */
+	struct tcb *parent;		/* Parent task */
+
+	/* Task creation flags */
+	unsigned int clone_flags;
+
+	/* Name of the task */
+	char name[16];
+
+	/* Task ids */
+	int tid;
+	int spid;
+	int tgid;
+
+	/* Related task ids */
+	unsigned int pagerid;		/* Task's pager */
+
+	/* Task's main address space region, usually USER_AREA_START/END */
+	unsigned long start;
+	unsigned long end;
+
+	/* Page aligned program segment marks, ends exclusive as usual */
+	unsigned long entry;
+	unsigned long text_start;
+	unsigned long text_end;
+	unsigned long data_start;
+	unsigned long data_end;
+	unsigned long bss_start;
+	unsigned long bss_end;
+	unsigned long stack_start;
+	unsigned long stack_end;
+	unsigned long heap_start;
+	unsigned long heap_end;
+	unsigned long args_start;
+	unsigned long args_end;
+
+	/* Task's mmappable region */
+	unsigned long map_start;
+	unsigned long map_end;
+
+	/* Default ipc-shared-page information */
+	void *shared_page;
+
+	/* Chain of utcb descriptors */
+	struct utcb_head *utcb_head;
+
+	/* Unique utcb address of this task */
+	unsigned long utcb_address;
+
+	/* Virtual memory areas */
+	struct task_vma_head *vm_area_head;
+
+	/* File descriptors for this task */
+	struct task_fd_head *files;
+};
+
+struct tcb_head {
+	struct link list;
+	int total;			/* Total threads */
+};
+
+struct tcb *find_task(int tid);
+void global_add_task(struct tcb *task);
+void global_remove_task(struct tcb *task);
+void task_map_prefault_utcb(struct tcb *mapper, struct tcb *owner);
+int task_mmap_segments(struct tcb *task, struct vm_file *file, struct exec_file_desc *efd,
+			struct args_struct *args, struct args_struct *env);
+int task_setup_registers(struct tcb *task, unsigned int pc,
+			 unsigned int sp, l4id_t pager);
+struct tcb *tcb_alloc_init(unsigned int flags);
+int tcb_destroy(struct tcb *task);
+int task_start(struct tcb *task);
+int copy_tcb(struct tcb *to, struct tcb *from, unsigned int flags);
+int task_release_vmas(struct task_vma_head *vma_head);
+int task_prefault_regions(struct tcb *task, struct vm_file *f);
+struct tcb *task_create(struct tcb *orig,
+			struct task_ids *ids,
+			unsigned int ctrl_flags,
+			unsigned int alloc_flags);
+
+#endif /* __TASK_H__ */