29 lines
884 B
C
29 lines
884 B
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 "kernel/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(struct proc * caller, message * m_ptr)
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{
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struct vir_addr src, dst;
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src.segment = BIOS_SEG;
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dst.segment = D;
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src.offset = m_ptr->RDB_ADDR;
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dst.offset = (vir_bytes) m_ptr->RDB_BUF;
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src.proc_nr_e = NONE;
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dst.proc_nr_e = m_ptr->m_source;
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return virtual_copy_vmcheck(caller, &src, &dst, m_ptr->RDB_SIZE);
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}
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