0fb2f83da9
. sys_vircopy always uses D for both src and dst . sys_physcopy uses PHYS_SEG if and only if corresponding endpoint is NONE, so we can derive the mode (PHYS_SEG or D) from the endpoint arg in the kernel, dropping the seg args . fields in msg still filled in for backwards compatability, using same NONE-logic in the library
31 lines
970 B
C
31 lines
970 B
C
#include "syslib.h"
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int sys_vircopy(src_proc, src_vir,
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dst_proc, dst_vir, bytes)
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endpoint_t src_proc; /* source process */
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vir_bytes src_vir; /* source virtual address */
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endpoint_t dst_proc; /* destination process */
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vir_bytes dst_vir; /* destination virtual address */
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phys_bytes bytes; /* how many bytes */
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{
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/* Transfer a block of data. The source and destination can each either be a
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* process number or SELF (to indicate own process number). Virtual addresses
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* are offsets within LOCAL_SEG (text, stack, data), or BIOS_SEG.
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*/
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message copy_mess;
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if (bytes == 0L) return(OK);
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copy_mess.CP_SRC_ENDPT = src_proc;
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copy_mess.CP_SRC_ADDR = (long) src_vir;
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copy_mess.CP_DST_ENDPT = dst_proc;
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copy_mess.CP_DST_ADDR = (long) dst_vir;
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copy_mess.CP_NR_BYTES = (long) bytes;
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/* backwards compatability D segs */
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copy_mess.CP_DST_SPACE_OBSOLETE = D;
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copy_mess.CP_SRC_SPACE_OBSOLETE = D;
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return(_kernel_call(SYS_VIRCOPY, ©_mess));
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}
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