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
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/* The kernel call implemented in this file:
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* m_type: SYS_READBIOS
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*
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* The parameters for this kernel call are:
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* m2_i1: RDB_SIZE number of bytes to copy
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* m2_l1: RDB_ADDR absolute address in BIOS area
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* m2_p1: RDB_BUF buffer address in requesting process
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*/
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#include "../../system.h"
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#include <minix/type.h>
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/*===========================================================================*
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* do_readbios *
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*===========================================================================*/
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PUBLIC int do_readbios(m_ptr)
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register message *m_ptr; /* pointer to request message */
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{
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int proc_nr;
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struct proc *p;
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phys_bytes address, phys_buf, phys_bios;
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vir_bytes buf;
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size_t size;
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address = m_ptr->RDB_ADDR;
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buf = (vir_bytes)m_ptr->RDB_BUF;
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size = m_ptr->RDB_SIZE;
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okendpt(m_ptr->m_source, &proc_nr);
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p = proc_addr(proc_nr);
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phys_buf = umap_local(p, D, buf, size);
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if (phys_buf == 0)
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return EFAULT;
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phys_bios = umap_bios(p, address, size);
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if (phys_bios == 0)
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return EPERM;
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phys_copy(phys_bios, phys_buf, size);
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return 0;
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}
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