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Message type for SYS_{VIR,PHYS}COPY

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Change-Id: I15d1acf9992d1b799f5687adffb186875fcd0c84
This commit is contained in:
Lionel Sambuc
2014-05-21 17:21:26 +02:00
parent 05f155c0a9
commit 5735105bc8
4 changed files with 39 additions and 26 deletions
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28
kernel/system/do_copy.c
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@@ -2,11 +2,12 @@
* m_type: SYS_VIRCOPY, SYS_PHYSCOPY
*
* The parameters for this kernel call are:
* m5_l1: CP_SRC_ADDR source offset within segment
* m5_i1: CP_SRC_ENDPT source process number
* m5_l2: CP_DST_ADDR destination offset within segment
* m5_i2: CP_DST_ENDPT destination process number
* m5_l3: CP_NR_BYTES number of bytes to copy
* m_lsys_krn_sys_copy.src_addr source offset within segment
* m_lsys_krn_sys_copy.src_endpt source process number
* m_lsys_krn_sys_copy.dst_addr destination offset within segment
* m_lsys_krn_sys_copy.dst_endpt destination process number
* m_lsys_krn_sys_copy.nr_bytes number of bytes to copy
* m_lsys_krn_sys_copy.flags
*/
#include "kernel/system.h"
@@ -41,19 +42,19 @@ int do_copy(struct proc * caller, message * m_ptr)
printf(
"do_copy: got request from %d (source %d, destination %d)\n",
caller->p_endpoint,
m_ptr->CP_SRC_ENDPT,
m_ptr->CP_DST_ENDPT);
m_ptr->m_lsys_krn_sys_copy.src_endpt,
m_ptr->m_lsys_krn_sys_copy.dst_endpt);
}
}
#endif
/* Dismember the command message. */
vir_addr[_SRC_].proc_nr_e = m_ptr->CP_SRC_ENDPT;
vir_addr[_DST_].proc_nr_e = m_ptr->CP_DST_ENDPT;
vir_addr[_SRC_].proc_nr_e = m_ptr->m_lsys_krn_sys_copy.src_endpt;
vir_addr[_DST_].proc_nr_e = m_ptr->m_lsys_krn_sys_copy.dst_endpt;
vir_addr[_SRC_].offset = (vir_bytes) m_ptr->CP_SRC_ADDR;
vir_addr[_DST_].offset = (vir_bytes) m_ptr->CP_DST_ADDR;
bytes = (phys_bytes) m_ptr->CP_NR_BYTES;
vir_addr[_SRC_].offset = m_ptr->m_lsys_krn_sys_copy.src_addr;
vir_addr[_DST_].offset = m_ptr->m_lsys_krn_sys_copy.dst_addr;
bytes = m_ptr->m_lsys_krn_sys_copy.nr_bytes;
/* Now do some checks for both the source and destination virtual address.
* This is done once for _SRC_, then once for _DST_.
@@ -77,7 +78,7 @@ int do_copy(struct proc * caller, message * m_ptr)
if (bytes != (phys_bytes) (vir_bytes) bytes) return(E2BIG);
/* Now try to make the actual virtual copy. */
if(m_ptr->CP_FLAGS & CP_FLAG_TRY) {
if(m_ptr->m_lsys_krn_sys_copy.flags & CP_FLAG_TRY) {
int r;
assert(caller->p_endpoint == VFS_PROC_NR);
r = virtual_copy(&vir_addr[_SRC_], &vir_addr[_DST_], bytes);
@@ -89,4 +90,3 @@ int do_copy(struct proc * caller, message * m_ptr)
}
}
#endif /* (USE_VIRCOPY || USE_PHYSCOPY) */