8866b4d0ef
- reinstalled priority changing, now in sched() and unready() - reinstalled check on message buffer in sys_call() - reinstalled check in send masks in sys_call() - changed do_fork() to get new privilege structure for SYS_PROCs - removed some processes from boot image---will be dynamically started later
79 lines
2.8 KiB
C
Executable File
79 lines
2.8 KiB
C
Executable File
/* General macros and constants used by the kernel. */
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#ifndef CONST_H
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#define CONST_H
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#include <ibm/interrupt.h> /* interrupt numbers and hardware vectors */
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#include <ibm/ports.h> /* port addresses and magic numbers */
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#include <ibm/bios.h> /* BIOS addresses, sizes and magic numbers */
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#include <ibm/cpu.h> /* BIOS addresses, sizes and magic numbers */
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#include <minix/config.h>
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#include "config.h"
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/* To translate an address in kernel space to a physical address. This is
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* the same as umap_local(proc_ptr, D, vir, sizeof(*vir)), but less costly.
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*/
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#define vir2phys(vir) (kinfo.data_base + (vir_bytes) (vir))
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/* Translate a pointer to a field in a structure to a pointer to the structure
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* itself. So it translates '&struct_ptr->field' back to 'struct_ptr'.
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*/
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#define structof(type, field, ptr) \
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((type *) (((char *) (ptr)) - offsetof(type, field)))
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/* Constants used in virtual_copy(). Values must be 0 and 1, respectively. */
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#define _SRC_ 0
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#define _DST_ 1
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/* Number of random sources */
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#define RANDOM_SOURCES 16
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/* Constants and macros for bit map manipulation. */
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#define BITCHUNK_BITS (sizeof(bitchunk_t) * CHAR_BIT)
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#define BITMAP_CHUNKS(nr_bits) (((nr_bits)+BITCHUNK_BITS-1)/BITCHUNK_BITS)
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#define MAP_CHUNK(map,bit) (map)[((bit)/BITCHUNK_BITS)]
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#define CHUNK_OFFSET(bit) ((bit)%BITCHUNK_BITS))
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#define GET_BIT(map,bit) ( MAP_CHUNK(map,bit) & (1 << CHUNK_OFFSET(bit) )
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#define SET_BIT(map,bit) ( MAP_CHUNK(map,bit) |= (1 << CHUNK_OFFSET(bit) )
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#define UNSET_BIT(map,bit) ( MAP_CHUNK(map,bit) &= ~(1 << CHUNK_OFFSET(bit) )
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#define get_sys_bit(map,bit) \
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( MAP_CHUNK(map.chunk,bit) & (1 << CHUNK_OFFSET(bit) )
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#define set_sys_bit(map,bit) \
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( MAP_CHUNK(map.chunk,bit) |= (1 << CHUNK_OFFSET(bit) )
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#define unset_sys_bit(map,bit) \
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( MAP_CHUNK(map.chunk,bit) &= ~(1 << CHUNK_OFFSET(bit) )
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#define NR_SYS_CHUNKS BITMAP_CHUNKS(NR_SYS_PROCS)
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#if (CHIP == INTEL)
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/* Program stack words and masks. */
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#define INIT_PSW 0x0200 /* initial psw */
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#define INIT_TASK_PSW 0x1200 /* initial psw for tasks (with IOPL 1) */
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#define TRACEBIT 0x0100 /* OR this with psw in proc[] for tracing */
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#define SETPSW(rp, new) /* permits only certain bits to be set */ \
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((rp)->p_reg.psw = (rp)->p_reg.psw & ~0xCD5 | (new) & 0xCD5)
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#define IF_MASK 0x00000200
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#define IOPL_MASK 0x003000
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/* Disable/ enable hardware interrupts. The parameters of lock() and unlock()
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* are used when debugging is enabled. See debug.h for more information.
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*/
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#define lock(c, v) intr_disable();
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#define unlock(c) intr_enable();
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/* Sizes of memory tables. The boot monitor distinguishes three memory areas,
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* namely low mem below 1M, 1M-16M, and mem after 16M. More chunks are needed
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* for DOS MINIX.
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*/
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#define NR_MEMS 8
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#endif /* (CHIP == INTEL) */
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#if (CHIP == M68000)
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/* M68000 specific constants go here. */
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#endif /* (CHIP == M68000) */
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#endif /* CONST_H */
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