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
83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/* The system call implemented in this file:
|
|
* m_type: SYS_VM_MAP
|
|
*
|
|
* The parameters for this system call are:
|
|
* m4_l1: Process that requests map (VM_MAP_ENDPT)
|
|
* m4_l2: Map (TRUE) or unmap (FALSE) (VM_MAP_MAPUNMAP)
|
|
* m4_l3: Base address (VM_MAP_BASE)
|
|
* m4_l4: Size (VM_MAP_SIZE)
|
|
* m4_l5: address (VM_MAP_ADDR)
|
|
*/
|
|
#include "../system.h"
|
|
|
|
PRIVATE int vm_needs_init= 1;
|
|
|
|
#include <sys/vm.h>
|
|
|
|
/*===========================================================================*
|
|
* do_vm_map *
|
|
*===========================================================================*/
|
|
PUBLIC int do_vm_map(m_ptr)
|
|
message *m_ptr; /* pointer to request message */
|
|
{
|
|
int proc_nr, do_map;
|
|
phys_bytes base, size, offset, p_phys;
|
|
struct proc *pp;
|
|
|
|
/* do_serial_debug= 1; */
|
|
if (vm_needs_init)
|
|
{
|
|
vm_needs_init= 0;
|
|
vm_init();
|
|
}
|
|
|
|
if (m_ptr->VM_MAP_ENDPT == SELF) {
|
|
proc_nr = who_p;
|
|
} else {
|
|
if(!isokendpt(m_ptr->VM_MAP_ENDPT, &proc_nr))
|
|
return EINVAL;
|
|
}
|
|
|
|
do_map= m_ptr->VM_MAP_MAPUNMAP;
|
|
base= m_ptr->VM_MAP_BASE;
|
|
size= m_ptr->VM_MAP_SIZE;
|
|
offset= m_ptr->VM_MAP_ADDR;
|
|
|
|
pp= proc_addr(proc_nr);
|
|
p_phys= umap_local(pp, D, base, size);
|
|
if (p_phys == 0)
|
|
return EFAULT;
|
|
|
|
if (do_map)
|
|
{
|
|
pp->p_misc_flags |= MF_VM;
|
|
|
|
vm_map_range(p_phys, size, offset);
|
|
}
|
|
else
|
|
{
|
|
vm_map_range(p_phys, size, p_phys);
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* vm_map_default *
|
|
*===========================================================================*/
|
|
PUBLIC void vm_map_default(pp)
|
|
struct proc *pp;
|
|
{
|
|
phys_bytes base_clicks, size_clicks;
|
|
|
|
if (vm_needs_init)
|
|
panic("vm_map_default: VM not initialized?", NO_NUM);
|
|
pp->p_misc_flags &= ~MF_VM;
|
|
base_clicks= pp->p_memmap[D].mem_phys;
|
|
size_clicks= pp->p_memmap[S].mem_phys+pp->p_memmap[S].mem_len -
|
|
base_clicks;
|
|
vm_map_range(base_clicks << CLICK_SHIFT,
|
|
size_clicks << CLICK_SHIFT, base_clicks << CLICK_SHIFT);
|
|
}
|
|
|