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Message type for SYS_{S,G}ETMCONTEXT

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Change-Id: I388eee89ba8cc6e6603b3193297b81179c1e6975
This commit is contained in:
Lionel Sambuc
2014-05-26 10:41:06 +02:00
parent f06c676a47
commit 2027f8bc78
4 changed files with 38 additions and 14 deletions
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25
kernel/system/do_mcontext.c
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@@ -2,10 +2,13 @@
* m_type: SYS_SETMCONTEXT
* m_type: SYS_GETMCONTEXT
*
* The parameters for these kernel calls are:
* m1_i1: PR_ENDPT # proc endpoint doing call
* m1_p1: PR_MEM_PTR # pointer to mcontext structure
* The parameters for SYS_SETMCONTEXT kernel call are:
* m_lsys_krn_sys_setmcontext.endpt # proc endpoint doing call
* m_lsys_krn_sys_setmcontext.ctx_ptr # pointer to mcontext structure
*
* The parameters for SYS_GETMCONTEXT kernel call are:
* m_lsys_krn_sys_getmcontext.endpt # proc endpoint doing call
* m_lsys_krn_sys_getmcontext.ctx_ptr # pointer to mcontext structure
*/
#include "kernel/system.h"
@@ -25,7 +28,8 @@ int do_getmcontext(struct proc * caller, message * m_ptr)
int proc_nr, r;
mcontext_t mc;
if (! isokendpt(m_ptr->PR_ENDPT, &proc_nr)) return(EINVAL);
if (!isokendpt(m_ptr->m_lsys_krn_sys_getmcontext.endpt, &proc_nr))
return(EINVAL);
if (iskerneln(proc_nr)) return(EPERM);
rp = proc_addr(proc_nr);
@@ -35,7 +39,8 @@ int do_getmcontext(struct proc * caller, message * m_ptr)
#endif
/* Get the mcontext structure into our address space. */
if ((r = data_copy(m_ptr->PR_ENDPT, (vir_bytes) m_ptr->PR_CTX_PTR, KERNEL,
if ((r = data_copy(m_ptr->m_lsys_krn_sys_getmcontext.endpt,
m_ptr->m_lsys_krn_sys_getmcontext.ctx_ptr, KERNEL,
(vir_bytes) &mc, (phys_bytes) sizeof(mcontext_t))) != OK)
return(r);
@@ -53,8 +58,9 @@ int do_getmcontext(struct proc * caller, message * m_ptr)
/* Copy the mcontext structure to the user's address space. */
if ((r = data_copy(KERNEL, (vir_bytes) &mc, m_ptr->PR_ENDPT,
(vir_bytes) m_ptr->PR_CTX_PTR,
if ((r = data_copy(KERNEL, (vir_bytes) &mc,
m_ptr->m_lsys_krn_sys_getmcontext.endpt,
m_ptr->m_lsys_krn_sys_getmcontext.ctx_ptr,
(phys_bytes) sizeof(mcontext_t))) != OK)
return(r);
@@ -73,11 +79,12 @@ int do_setmcontext(struct proc * caller, message * m_ptr)
int proc_nr, r;
mcontext_t mc;
if (!isokendpt(m_ptr->PR_ENDPT, &proc_nr)) return(EINVAL);
if (!isokendpt(m_ptr->m_lsys_krn_sys_setmcontext.endpt, &proc_nr)) return(EINVAL);
rp = proc_addr(proc_nr);
/* Get the mcontext structure into our address space. */
if ((r = data_copy(m_ptr->PR_ENDPT, (vir_bytes) m_ptr->PR_CTX_PTR, KERNEL,
if ((r = data_copy(m_ptr->m_lsys_krn_sys_setmcontext.endpt,
m_ptr->m_lsys_krn_sys_setmcontext.ctx_ptr, KERNEL,
(vir_bytes) &mc, (phys_bytes) sizeof(mcontext_t))) != OK)
return(r);