307c825515
The call works. Permission check, restriction of outstanding notifications to be added. Low level code to make it work from within interrupt handlers will be added as well.
109 lines
3.8 KiB
C
Executable file
109 lines
3.8 KiB
C
Executable file
#ifndef TYPE_H
|
|
#define TYPE_H
|
|
|
|
typedef _PROTOTYPE( void task_t, (void) );
|
|
|
|
/* Type accepted by kprintf(). This is a hack to accept both integers and
|
|
* char pointers in the same argument.
|
|
*/
|
|
typedef long karg_t; /* use largest type here */
|
|
|
|
/* Process related types.
|
|
* A process number defines the index into the process table. With a signed
|
|
* short we can support up to 256 user processes and more kernel tasks than
|
|
* one can ever create.
|
|
*/
|
|
typedef int proc_nr_t; /* process table entry number */
|
|
typedef unsigned long send_mask_t; /* bit mask for sender */
|
|
|
|
struct system_image {
|
|
proc_nr_t proc_nr; /* process number to use */
|
|
task_t *initial_pc; /* start function for tasks */
|
|
int type; /* type of process */
|
|
int priority; /* scheduling priority */
|
|
int stksize; /* stack size for tasks */
|
|
send_mask_t sendmask; /* send mask protection */
|
|
char proc_name[PROC_NAME_LEN]; /* name in process table */
|
|
};
|
|
|
|
struct memory {
|
|
phys_clicks base; /* start address of chunk */
|
|
phys_clicks size; /* size of memory chunk */
|
|
};
|
|
|
|
typedef unsigned long notify_mask_t; /* bit mask for notifications */
|
|
typedef char notify_type_t; /* notification type */
|
|
typedef char notify_flags_t; /* notification flags */
|
|
typedef int notify_arg_t; /* notification argument */
|
|
|
|
struct notification {
|
|
proc_nr_t n_source; /* sender of notification */
|
|
notify_type_t n_type; /* notification type */
|
|
notify_arg_t n_arg; /* notification argument */
|
|
notify_flags_t n_flags; /* notification flags */
|
|
struct notification* n_next; /* pointer to next notification */
|
|
};
|
|
|
|
#if (CHIP == INTEL)
|
|
typedef unsigned reg_t; /* machine register */
|
|
|
|
/* The stack frame layout is determined by the software, but for efficiency
|
|
* it is laid out so the assembly code to use it is as simple as possible.
|
|
* 80286 protected mode and all real modes use the same frame, built with
|
|
* 16-bit registers. Real mode lacks an automatic stack switch, so little
|
|
* is lost by using the 286 frame for it. The 386 frame differs only in
|
|
* having 32-bit registers and more segment registers. The same names are
|
|
* used for the larger registers to avoid differences in the code.
|
|
*/
|
|
struct stackframe_s { /* proc_ptr points here */
|
|
#if _WORD_SIZE == 4
|
|
u16_t gs; /* last item pushed by save */
|
|
u16_t fs; /* ^ */
|
|
#endif
|
|
u16_t es; /* | */
|
|
u16_t ds; /* | */
|
|
reg_t di; /* di through cx are not accessed in C */
|
|
reg_t si; /* order is to match pusha/popa */
|
|
reg_t fp; /* bp */
|
|
reg_t st; /* hole for another copy of sp */
|
|
reg_t bx; /* | */
|
|
reg_t dx; /* | */
|
|
reg_t cx; /* | */
|
|
reg_t retreg; /* ax and above are all pushed by save */
|
|
reg_t retadr; /* return address for assembly code save() */
|
|
reg_t pc; /* ^ last item pushed by interrupt */
|
|
reg_t cs; /* | */
|
|
reg_t psw; /* | */
|
|
reg_t sp; /* | */
|
|
reg_t ss; /* these are pushed by CPU during interrupt */
|
|
};
|
|
|
|
struct segdesc_s { /* segment descriptor for protected mode */
|
|
u16_t limit_low;
|
|
u16_t base_low;
|
|
u8_t base_middle;
|
|
u8_t access; /* |P|DL|1|X|E|R|A| */
|
|
u8_t granularity; /* |G|X|0|A|LIMT| */
|
|
u8_t base_high;
|
|
};
|
|
|
|
typedef unsigned long irq_policy_t;
|
|
|
|
typedef struct irq_hook {
|
|
struct irq_hook *next; /* next hook in chain */
|
|
int (*handler)(struct irq_hook *); /* interrupt handler */
|
|
int irq; /* IRQ vector number */
|
|
int id; /* id of this hook */
|
|
int proc_nr; /* NONE if not in use */
|
|
irq_policy_t policy; /* bit mask for policy */
|
|
} irq_hook_t;
|
|
|
|
typedef int (*irq_handler_t)(struct irq_hook *);
|
|
|
|
#endif /* (CHIP == INTEL) */
|
|
|
|
#if (CHIP == M68000)
|
|
/* M68000 specific types go here. */
|
|
#endif /* (CHIP == M68000) */
|
|
|
|
#endif /* TYPE_H */
|