110 lines
3.8 KiB
C
Executable file
110 lines
3.8 KiB
C
Executable file
#ifndef TYPE_H
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#define TYPE_H
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typedef _PROTOTYPE( void task_t, (void) );
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/* Process table and system property related types. */
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typedef int proc_nr_t; /* process table entry number */
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typedef short sys_id_t; /* system process index */
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typedef struct { /* bitmap for system indexes */
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bitchunk_t chunk[BITMAP_CHUNKS(NR_SYS_PROCS)];
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} sys_map_t;
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struct boot_image {
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proc_nr_t proc_nr; /* process number to use */
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task_t *initial_pc; /* start function for tasks */
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int flags; /* process flags */
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unsigned char quantum; /* quantum (tick count) */
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int priority; /* scheduling priority */
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int stksize; /* stack size for tasks */
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short trap_mask; /* allowed system call traps */
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bitchunk_t ipc_to; /* send mask protection */
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long call_mask; /* system call protection */
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char proc_name[P_NAME_LEN]; /* name in process table */
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};
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struct memory {
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phys_clicks base; /* start address of chunk */
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phys_clicks size; /* size of memory chunk */
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};
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/* The kernel outputs diagnostic messages in a circular buffer. */
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struct kmessages {
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int km_next; /* next index to write */
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int km_size; /* current size in buffer */
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char km_buf[KMESS_BUF_SIZE]; /* buffer for messages */
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};
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struct randomness {
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struct {
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int r_next; /* next index to write */
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int r_size; /* number of random elements */
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unsigned short r_buf[RANDOM_ELEMENTS]; /* buffer for random info */
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} bin[RANDOM_SOURCES];
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};
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#if (CHIP == INTEL)
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typedef unsigned reg_t; /* machine register */
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/* The stack frame layout is determined by the software, but for efficiency
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* it is laid out so the assembly code to use it is as simple as possible.
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* 80286 protected mode and all real modes use the same frame, built with
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* 16-bit registers. Real mode lacks an automatic stack switch, so little
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* is lost by using the 286 frame for it. The 386 frame differs only in
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* having 32-bit registers and more segment registers. The same names are
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* used for the larger registers to avoid differences in the code.
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*/
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struct stackframe_s { /* proc_ptr points here */
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#if _WORD_SIZE == 4
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u16_t gs; /* last item pushed by save */
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u16_t fs; /* ^ */
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#endif
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u16_t es; /* | */
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u16_t ds; /* | */
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reg_t di; /* di through cx are not accessed in C */
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reg_t si; /* order is to match pusha/popa */
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reg_t fp; /* bp */
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reg_t st; /* hole for another copy of sp */
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reg_t bx; /* | */
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reg_t dx; /* | */
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reg_t cx; /* | */
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reg_t retreg; /* ax and above are all pushed by save */
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reg_t retadr; /* return address for assembly code save() */
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reg_t pc; /* ^ last item pushed by interrupt */
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reg_t cs; /* | */
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reg_t psw; /* | */
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reg_t sp; /* | */
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reg_t ss; /* these are pushed by CPU during interrupt */
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};
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struct segdesc_s { /* segment descriptor for protected mode */
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u16_t limit_low;
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u16_t base_low;
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u8_t base_middle;
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u8_t access; /* |P|DL|1|X|E|R|A| */
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u8_t granularity; /* |G|X|0|A|LIMT| */
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u8_t base_high;
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};
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typedef unsigned long irq_policy_t;
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typedef unsigned long irq_id_t;
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typedef struct irq_hook {
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struct irq_hook *next; /* next hook in chain */
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int (*handler)(struct irq_hook *); /* interrupt handler */
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int irq; /* IRQ vector number */
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int id; /* id of this hook */
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int proc_nr; /* NONE if not in use */
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irq_id_t notify_id; /* id to return on interrupt */
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irq_policy_t policy; /* bit mask for policy */
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} irq_hook_t;
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typedef int (*irq_handler_t)(struct irq_hook *);
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#endif /* (CHIP == INTEL) */
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#if (CHIP == M68000)
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/* M68000 specific types go here. */
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#endif /* (CHIP == M68000) */
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#endif /* TYPE_H */
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