minix/kernel/const.h
Ben Gras 6f77685609 Split of architecture-dependent and -independent functions for i386,
mainly in the kernel and headers. This split based on work by
Ingmar Alting <iaalting@cs.vu.nl> done for his Minix PowerPC architecture
port.

 . kernel does not program the interrupt controller directly, do any
   other architecture-dependent operations, or contain assembly any more,
   but uses architecture-dependent functions in arch/$(ARCH)/.
 . architecture-dependent constants and types defined in arch/$(ARCH)/include.
 . <ibm/portio.h> moved to <minix/portio.h>, as they have become, for now,
   architecture-independent functions.
 . int86, sdevio, readbios, and iopenable are now i386-specific kernel calls
   and live in arch/i386/do_* now.
 . i386 arch now supports even less 86 code; e.g. mpx86.s and klib86.s have
   gone, and 'machine.protected' is gone (and always taken to be 1 in i386).
   If 86 support is to return, it should be a new architecture.
 . prototypes for the architecture-dependent functions defined in
   kernel/arch/$(ARCH)/*.c but used in kernel/ are in kernel/proto.h
 . /etc/make.conf included in makefiles and shell scripts that need to
   know the building architecture; it defines ARCH=<arch>, currently only
   i386.
 . some basic per-architecture build support outside of the kernel (lib)
 . in clock.c, only dequeue a process if it was ready
 . fixes for new include files

files deleted:
 . mpx/klib.s - only for choosing between mpx/klib86 and -386
 . klib86.s - only for 86

i386-specific files files moved (or arch-dependent stuff moved) to arch/i386/:
 . mpx386.s (entry point)
 . klib386.s
 . sconst.h
 . exception.c
 . protect.c
 . protect.h
 . i8269.c
2006-12-22 15:22:27 +00:00

63 lines
1.9 KiB
C
Executable file

/* General macros and constants used by the kernel. */
#ifndef CONST_H
#define CONST_H
#include <minix/config.h>
#include <minix/bitmap.h>
#include "config.h"
/* Map a process number to a privilege structure id. */
#define s_nr_to_id(n) (NR_TASKS + (n) + 1)
/* Translate a pointer to a field in a structure to a pointer to the structure
* itself. So it translates '&struct_ptr->field' back to 'struct_ptr'.
*/
#define structof(type, field, ptr) \
((type *) (((char *) (ptr)) - offsetof(type, field)))
/* Translate an endpoint number to a process number, return success. */
#define isokendpt(e,p) isokendpt_d((e),(p),0)
#define okendpt(e,p) isokendpt_d((e),(p),1)
/* Constants used in virtual_copy(). Values must be 0 and 1, respectively. */
#define _SRC_ 0
#define _DST_ 1
/* Number of random sources */
#define RANDOM_SOURCES 16
#define get_sys_bit(map,bit) \
( MAP_CHUNK(map.chunk,bit) & (1 << CHUNK_OFFSET(bit) )
#define get_sys_bits(map,bit) \
( MAP_CHUNK(map.chunk,bit) )
#define set_sys_bit(map,bit) \
( MAP_CHUNK(map.chunk,bit) |= (1 << CHUNK_OFFSET(bit) )
#define unset_sys_bit(map,bit) \
( MAP_CHUNK(map.chunk,bit) &= ~(1 << CHUNK_OFFSET(bit) )
#define NR_SYS_CHUNKS BITMAP_CHUNKS(NR_SYS_PROCS)
#if DEBUG_LOCK_CHECK
#define reallock(c, v) { if(intr_disabled()) { kinfo.relocking++; } else { intr_disable(); } }
#else
#define reallock(c, v) intr_disable()
#endif
#define realunlock(c) intr_enable()
#if DEBUG_TIME_LOCKS
#define lock(c, v) do { reallock(c, v); locktimestart(c, v); } while(0)
#define unlock(c) do { locktimeend(c); realunlock(c); } while(0)
#else
/* Disable/ enable hardware interrupts. The parameters of lock() and unlock()
* are used when debugging is enabled. See debug.h for more information.
*/
#define lock(c, v) reallock(c, v)
#define unlock(c) realunlock(c)
#endif
/* args to intr_init() */
#define INTS_ORIG 0 /* restore interrupts */
#define INTS_MINIX 1 /* initialize interrupts for minix */
#endif /* CONST_H */