6f77685609
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
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
/* The system call implemented in this file:
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* m_type: SYS_VM_MAP
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*
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* The parameters for this system call are:
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* m4_l1: Process that requests map (VM_MAP_ENDPT)
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* m4_l2: Map (TRUE) or unmap (FALSE) (VM_MAP_MAPUNMAP)
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* m4_l3: Base address (VM_MAP_BASE)
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* m4_l4: Size (VM_MAP_SIZE)
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* m4_l5: address (VM_MAP_ADDR)
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*/
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#include "../system.h"
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PRIVATE int vm_needs_init= 1;
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#include <sys/vm.h>
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/*===========================================================================*
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* do_vm_map *
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*===========================================================================*/
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PUBLIC int do_vm_map(m_ptr)
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message *m_ptr; /* pointer to request message */
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{
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int proc_nr, do_map;
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phys_bytes base, size, offset, p_phys;
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struct proc *pp;
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/* do_serial_debug= 1; */
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if (vm_needs_init)
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{
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vm_needs_init= 0;
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vm_init();
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}
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if (m_ptr->VM_MAP_ENDPT == SELF) {
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proc_nr = who_p;
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} else {
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if(!isokendpt(m_ptr->VM_MAP_ENDPT, &proc_nr))
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return EINVAL;
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}
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do_map= m_ptr->VM_MAP_MAPUNMAP;
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base= m_ptr->VM_MAP_BASE;
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size= m_ptr->VM_MAP_SIZE;
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offset= m_ptr->VM_MAP_ADDR;
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pp= proc_addr(proc_nr);
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p_phys= umap_local(pp, D, base, size);
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if (p_phys == 0)
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return EFAULT;
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if (do_map)
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{
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pp->p_misc_flags |= MF_VM;
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vm_map_range(p_phys, size, offset);
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}
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else
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{
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vm_map_range(p_phys, size, p_phys);
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}
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return OK;
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}
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/*===========================================================================*
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* vm_map_default *
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*===========================================================================*/
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PUBLIC void vm_map_default(pp)
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struct proc *pp;
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{
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phys_bytes base_clicks, size_clicks;
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if (vm_needs_init)
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panic("vm_map_default: VM not initialized?", NO_NUM);
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pp->p_misc_flags &= ~MF_VM;
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base_clicks= pp->p_memmap[D].mem_phys;
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size_clicks= pp->p_memmap[S].mem_phys+pp->p_memmap[S].mem_len -
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base_clicks;
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vm_map_range(base_clicks << CLICK_SHIFT,
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size_clicks << CLICK_SHIFT, base_clicks << CLICK_SHIFT);
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}
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