Initial revision

2005-04-21 14:53:53 +00:00
commit 9865aeaa79
2264 changed files with 411685 additions and 0 deletions
@@ -0,0 +1,55 @@
+/* The system call implemented in this file:
+ *   m_type:	SYS_VCOPY
+ *
+ * The parameters for this system call are:
+ *    m1_i1:	VCP_SRC_PROC	(source process number)
+ *    m1_i2:	VCP_DST_PROC	(destination process number)
+ *    m1_i3:	VCP_VEC_SIZE	(vector size)
+ *    m1_p1:	VCP_VEC_ADDR	(pointer to vector)
+ *
+ * Author:
+ *    Jorrit N. Herder <jnherder@cs.vu.nl>
+ */
+
+#include "../kernel.h"
+#include "../system.h"
+
+/*===========================================================================*
+ *				do_vcopy				     *
+ *===========================================================================*/
+PUBLIC int do_vcopy(m_ptr)
+register message *m_ptr;	/* pointer to request message */
+{
+/* Handle sys_vcopy(). Copy multiple blocks of memory */
+
+  int src_proc, dst_proc, vect_s, i;
+  vir_bytes src_vir, dst_vir, vect_addr;
+  phys_bytes src_phys, dst_phys, bytes;
+  cpvec_t cpvec_table[CPVEC_NR];
+
+  /* Dismember the command message. */
+  src_proc = m_ptr->VCP_SRC_PROC;
+  dst_proc = m_ptr->VCP_DST_PROC;
+  vect_s = m_ptr->VCP_VEC_SIZE;
+  vect_addr = (vir_bytes)m_ptr->VCP_VEC_ADDR;
+
+  if (vect_s > CPVEC_NR) return EDOM;
+
+  src_phys= numap_local(m_ptr->m_source, vect_addr, vect_s * sizeof(cpvec_t));
+  if (!src_phys) return EFAULT;
+  phys_copy(src_phys, vir2phys(cpvec_table),
+				(phys_bytes) (vect_s * sizeof(cpvec_t)));
+
+  for (i = 0; i < vect_s; i++) {
+	src_vir= cpvec_table[i].cpv_src;
+	dst_vir= cpvec_table[i].cpv_dst;
+	bytes= cpvec_table[i].cpv_size;
+	src_phys = numap_local(src_proc,src_vir,(vir_bytes)bytes);
+	dst_phys = numap_local(dst_proc,dst_vir,(vir_bytes)bytes);
+	if (src_phys == 0 || dst_phys == 0) return(EFAULT);
+	phys_copy(src_phys, dst_phys, bytes);
+  }
+  return(OK);
+}
+
+