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
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/* The kernel call implemented in this file:
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* m_type: SYS_INT86
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*
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* The parameters for this kernel call are:
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* m1_p1: INT86_REG86
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*/
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#include "../../system.h"
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#include <minix/type.h>
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#include <minix/endpoint.h>
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#include <minix/portio.h>
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#include <ibm/int86.h>
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#include "proto.h"
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struct reg86u reg86;
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/*===========================================================================*
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* do_int86 *
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*===========================================================================*/
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PUBLIC int do_int86(m_ptr)
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register message *m_ptr; /* pointer to request message */
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{
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vir_bytes caller_vir;
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phys_bytes caller_phys, kernel_phys;
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caller_vir = (vir_bytes) m_ptr->INT86_REG86;
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caller_phys = umap_local(proc_addr(who_p), D, caller_vir, sizeof(reg86));
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if (0 == caller_phys) return(EFAULT);
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kernel_phys = vir2phys(®86);
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phys_copy(caller_phys, kernel_phys, (phys_bytes) sizeof(reg86));
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level0(int86);
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/* Copy results back to the caller */
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phys_copy(kernel_phys, caller_phys, (phys_bytes) sizeof(reg86));
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/* The BIOS call eats interrupts. Call get_randomness to generate some
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* entropy. Normally, get_randomness is called from an interrupt handler.
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* Figuring out the exact source is too complicated. CLOCK_IRQ is normally
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* not very random.
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*/
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lock(0, "do_int86");
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get_randomness(CLOCK_IRQ);
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unlock(0);
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return(OK);
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}
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