32c05f45c6
Removed debug dumps on panic from main.c; Return error on exit when other process does IPC to/from exiting process.
126 lines
6 KiB
C
Executable file
126 lines
6 KiB
C
Executable file
/* The object file of "table.c" contains most kernel data. Variables that
|
|
* are declared in the *.h files appear with EXTERN in front of them, as in
|
|
*
|
|
* EXTERN int x;
|
|
*
|
|
* Normally EXTERN is defined as extern, so when they are included in another
|
|
* file, no storage is allocated. If EXTERN were not present, but just say,
|
|
*
|
|
* int x;
|
|
*
|
|
* then including this file in several source files would cause 'x' to be
|
|
* declared several times. While some linkers accept this, others do not,
|
|
* so they are declared extern when included normally. However, it must be
|
|
* declared for real somewhere. That is done here, by redefining EXTERN as
|
|
* the null string, so that inclusion of all *.h files in table.c actually
|
|
* generates storage for them.
|
|
*
|
|
* Various variables could not be declared EXTERN, but are declared PUBLIC
|
|
* or PRIVATE. The reason for this is that extern variables cannot have a
|
|
* default initialization. If such variables are shared, they must also be
|
|
* declared in one of the *.h files without the initialization. Examples
|
|
* include 'boot_image' (this file) and 'idt' and 'gdt' (protect.c).
|
|
*
|
|
* Changes:
|
|
* Aug 02, 2005 set privileges and minimal boot image (Jorrit N. Herder)
|
|
* Oct 17, 2004 updated above and tasktab comments (Jorrit N. Herder)
|
|
* May 01, 2004 changed struct for system image (Jorrit N. Herder)
|
|
*/
|
|
#define _TABLE
|
|
|
|
#include "kernel.h"
|
|
#include "proc.h"
|
|
#include "ipc.h"
|
|
#include <minix/com.h>
|
|
#include <ibm/int86.h>
|
|
|
|
/* Define stack sizes for the kernel tasks included in the system image. */
|
|
#define NO_STACK 0
|
|
#define SMALL_STACK (128 * sizeof(char *))
|
|
#define IDL_S SMALL_STACK /* 3 intr, 3 temps, 4 db for Intel */
|
|
#define HRD_S NO_STACK /* dummy task, uses kernel stack */
|
|
#define TSK_S SMALL_STACK /* system and clock task */
|
|
|
|
/* Stack space for all the task stacks. Declared as (char *) to align it. */
|
|
#define TOT_STACK_SPACE (IDL_S + HRD_S + (2 * TSK_S))
|
|
PUBLIC char *t_stack[TOT_STACK_SPACE / sizeof(char *)];
|
|
|
|
/* Define flags for the various process types. */
|
|
#define IDL_F (SYS_PROC | PREEMPTIBLE | BILLABLE) /* idle task */
|
|
#define TSK_F (SYS_PROC) /* kernel tasks */
|
|
#define SRV_F (SYS_PROC | PREEMPTIBLE) /* system services */
|
|
#define USR_F (BILLABLE | PREEMPTIBLE) /* user processes */
|
|
|
|
/* Define system call traps for the various process types. These call masks
|
|
* determine what system call traps a process is allowed to make.
|
|
*/
|
|
#define TSK_T (1 << RECEIVE) /* clock and system */
|
|
#define SRV_T (~0) /* system services */
|
|
#define USR_T ((1 << SENDREC) | (1 << ECHO)) /* user processes */
|
|
|
|
/* Send masks determine to whom processes can send messages or notifications.
|
|
* The values here are used for the processes in the boot image. We rely on
|
|
* the initialization code in main() to match the s_nr_to_id() mapping for the
|
|
* processes in the boot image, so that the send mask that is defined here
|
|
* can be directly copied onto map[0] of the actual send mask. Privilege
|
|
* structure 0 is shared by user processes.
|
|
*/
|
|
#define s(n) (1 << s_nr_to_id(n))
|
|
#define SRV_M (~0)
|
|
#define SYS_M (~0)
|
|
#define USR_M (s(PM_PROC_NR) | s(FS_PROC_NR) | s(RS_PROC_NR) | s(SYSTEM))
|
|
#define DRV_M (USR_M | s(SYSTEM) | s(CLOCK) | s(LOG_PROC_NR) | s(TTY_PROC_NR))
|
|
|
|
/* Define kernel calls that processes are allowed to make. This is not looking
|
|
* very nice, but we need to define the access rights on a per call basis.
|
|
* Note that the reincarnation server has all bits on, because it should
|
|
* be allowed to distribute rights to services that it starts.
|
|
*/
|
|
#define c(n) (1 << ((n)-KERNEL_CALL))
|
|
#define RS_C ~0
|
|
#define PM_C ~(c(SYS_DEVIO) | c(SYS_SDEVIO) | c(SYS_VDEVIO) \
|
|
| c(SYS_IRQCTL) | c(SYS_INT86))
|
|
#define FS_C (c(SYS_KILL) | c(SYS_VIRCOPY) | c(SYS_VIRVCOPY) | c(SYS_UMAP) \
|
|
| c(SYS_GETINFO) | c(SYS_EXIT) | c(SYS_TIMES) | c(SYS_SETALARM))
|
|
#define DRV_C (FS_C | c(SYS_SEGCTL) | c(SYS_IRQCTL) | c(SYS_INT86) \
|
|
| c(SYS_DEVIO) | c(SYS_VDEVIO) | c(SYS_SDEVIO))
|
|
#define TTY_C (DRV_C | c(SYS_ABORT))
|
|
#define MEM_C (DRV_C | c(SYS_PHYSCOPY) | c(SYS_PHYSVCOPY) | c(SYS_VM_MAP))
|
|
|
|
/* The system image table lists all programs that are part of the boot image.
|
|
* The order of the entries here MUST agree with the order of the programs
|
|
* in the boot image and all kernel tasks must come first.
|
|
* Each entry provides the process number, flags, quantum size (qs), scheduling
|
|
* queue, allowed traps, ipc mask, and a name for the process table. The
|
|
* initial program counter and stack size is also provided for kernel tasks.
|
|
*/
|
|
PUBLIC struct boot_image image[] = {
|
|
/* process nr, pc, flags, qs, queue, stack, traps, ipcto, call, name */
|
|
{ IDLE, idle_task, IDL_F, 8, IDLE_Q, IDL_S, 0, 0, 0, "IDLE" },
|
|
{ CLOCK,clock_task, TSK_F, 0, TASK_Q, TSK_S, TSK_T, 0, 0, "CLOCK" },
|
|
{ SYSTEM, sys_task, TSK_F, 0, TASK_Q, TSK_S, TSK_T, 0, 0, "SYSTEM"},
|
|
{ HARDWARE, 0, TSK_F, 0, TASK_Q, HRD_S, 0, 0, 0, "KERNEL"},
|
|
{ PM_PROC_NR, 0, SRV_F, 32, 3, 0, SRV_T, SRV_M, PM_C, "pm" },
|
|
{ FS_PROC_NR, 0, SRV_F, 32, 4, 0, SRV_T, SRV_M, FS_C, "fs" },
|
|
{ RS_PROC_NR, 0, SRV_F, 4, 3, 0, SRV_T, SYS_M, RS_C, "rs" },
|
|
{ TTY_PROC_NR, 0, SRV_F, 4, 1, 0, SRV_T, SYS_M, TTY_C, "tty" },
|
|
{ MEM_PROC_NR, 0, SRV_F, 4, 2, 0, SRV_T, DRV_M, MEM_C, "memory"},
|
|
{ LOG_PROC_NR, 0, SRV_F, 4, 2, 0, SRV_T, SYS_M, DRV_C, "log" },
|
|
{ DRVR_PROC_NR, 0, SRV_F, 4, 2, 0, SRV_T, SYS_M, DRV_C, "driver"},
|
|
#if DEAD_CODE
|
|
... WARNING: replace ~0 with USR_T / USR_M
|
|
#endif
|
|
{ INIT_PROC_NR, 0, USR_F, 8, USER_Q, 0, ~0, ~0, 0, "init" },
|
|
};
|
|
|
|
/* Verify the size of the system image table at compile time. Also verify that
|
|
* the first chunk of the ipc mask has enough bits to accommodate the processes
|
|
* in the image.
|
|
* If a problem is detected, the size of the 'dummy' array will be negative,
|
|
* causing a compile time error. Note that no space is actually allocated
|
|
* because 'dummy' is declared extern.
|
|
*/
|
|
extern int dummy[(NR_BOOT_PROCS==sizeof(image)/
|
|
sizeof(struct boot_image))?1:-1];
|
|
extern int dummy[(BITCHUNK_BITS > NR_BOOT_PROCS - 1) ? 1 : -1];
|
|
|