128 lines
3.7 KiB
C
Executable File
128 lines
3.7 KiB
C
Executable File
#ifndef _TYPE_H
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#define _TYPE_H
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#ifndef _TYPES_H
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#include <sys/types.h>
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#endif
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/* Type definitions. */
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typedef unsigned int vir_clicks; /* virtual addresses and lengths in clicks */
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typedef unsigned long phys_bytes;/* physical addresses and lengths in bytes */
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typedef unsigned int phys_clicks;/* physical addresses and lengths in clicks */
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#if (CHIP == INTEL)
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typedef unsigned int vir_bytes; /* virtual addresses and lengths in bytes */
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#endif
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#if (CHIP == M68000)
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typedef unsigned long vir_bytes;/* virtual addresses and lengths in bytes */
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#endif
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#if (CHIP == SPARC)
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typedef unsigned long vir_bytes;/* virtual addresses and lengths in bytes */
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#endif
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/* Memory map for local text, stack, data segments. */
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struct mem_map {
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vir_clicks mem_vir; /* virtual address */
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phys_clicks mem_phys; /* physical address */
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vir_clicks mem_len; /* length */
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};
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/* Memory map for remote memory areas, e.g., for the RAM disk. */
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struct far_mem {
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int in_use; /* entry in use, unless zero */
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phys_clicks mem_phys; /* physical address */
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vir_clicks mem_len; /* length */
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};
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/* Structure for virtual copying by means of a vector with requests. */
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struct vir_addr {
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int proc_nr;
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int segment;
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vir_bytes offset;
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};
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struct vir_cp_req {
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struct vir_addr src;
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struct vir_addr dst;
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phys_bytes count;
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};
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typedef struct {
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vir_bytes iov_addr; /* address of an I/O buffer */
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vir_bytes iov_size; /* sizeof an I/O buffer */
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} iovec_t;
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typedef struct {
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vir_bytes cpv_src; /* src address of data */
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vir_bytes cpv_dst; /* dst address of data */
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vir_bytes cpv_size; /* size of data */
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} cpvec_t;
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/* virtual copy vector */
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typedef struct {
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int cpvv_src_seg, cpvv_dst_seg; /* src & dst segments */
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vir_bytes cpvv_src; /* src address of data */
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vir_bytes cpvv_dst; /* dst address of data */
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vir_bytes cpvv_size; /* size of data */
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} cpvvec_t;
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/* MM passes the address of a structure of this type to KERNEL when
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* do_sendsig() is invoked as part of the signal catching mechanism.
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* The structure contain all the information that KERNEL needs to build
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* the signal stack.
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*/
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struct sigmsg {
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int sm_signo; /* signal number being caught */
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unsigned long sm_mask; /* mask to restore when handler returns */
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vir_bytes sm_sighandler; /* address of handler */
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vir_bytes sm_sigreturn; /* address of _sigreturn in C library */
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vir_bytes sm_stkptr; /* user stack pointer */
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};
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#define MESS_SIZE (sizeof(message)) /* might need usizeof from fs here */
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#define NIL_MESS ((message *) 0)
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struct psinfo { /* information for the ps(1) program */
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u16_t nr_tasks, nr_procs; /* NR_TASKS and NR_PROCS constants. */
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vir_bytes proc, mproc, fproc; /* addresses of the main process tables. */
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};
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/* This is used to obtain system information through SYS_GETINFO. */
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struct kinfo {
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phys_bytes code_base; /* base of kernel code */
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phys_bytes code_size;
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phys_bytes data_base; /* base of kernel data */
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phys_bytes data_size;
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vir_bytes proc_addr; /* virtual address of process table */
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phys_bytes kmem_base; /* kernel memory layout (/dev/kmem) */
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phys_bytes kmem_size;
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phys_bytes bootdev_base; /* boot device from boot image (/dev/boot) */
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phys_bytes bootdev_size;
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phys_bytes params_base; /* parameters passed by boot monitor */
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phys_bytes params_size;
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char version[8]; /* kernel version number */
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};
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struct machine {
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int pc_at;
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int ps_mca;
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int processor;
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int protected;
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int vdu_ega;
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int vdu_vga;
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};
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/* The kernel outputs messages in a local buffer, which can be requested and
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* printed by the TTY driver. The buffer structure is defined here.
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*/
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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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#endif /* _TYPE_H */
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