c6fec6866f
- No locking in RTS_(UN)SET macros - No lock_notify() - Removed unused lock_send() - No lock/unlock macros anymore
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* The kernel call implemented in this file:
|
|
* m_type: SYS_EXEC
|
|
*
|
|
* The parameters for this kernel call are:
|
|
* m1_i1: PR_ENDPT (process that did exec call)
|
|
* m1_p1: PR_STACK_PTR (new stack pointer)
|
|
* m1_p2: PR_NAME_PTR (pointer to program name)
|
|
* m1_p3: PR_IP_PTR (new instruction pointer)
|
|
*/
|
|
#include "../system.h"
|
|
#include <string.h>
|
|
#include <minix/endpoint.h>
|
|
|
|
#if USE_EXEC
|
|
|
|
/*===========================================================================*
|
|
* do_exec *
|
|
*===========================================================================*/
|
|
PUBLIC int do_exec(struct proc * caller, message * m_ptr)
|
|
{
|
|
/* Handle sys_exec(). A process has done a successful EXEC. Patch it up. */
|
|
register struct proc *rp;
|
|
int proc_nr;
|
|
|
|
if(!isokendpt(m_ptr->PR_ENDPT, &proc_nr))
|
|
return EINVAL;
|
|
|
|
rp = proc_addr(proc_nr);
|
|
|
|
if(rp->p_misc_flags & MF_DELIVERMSG) {
|
|
rp->p_misc_flags &= ~MF_DELIVERMSG;
|
|
rp->p_delivermsg_lin = 0;
|
|
}
|
|
|
|
/* Save command name for debugging, ps(1) output, etc. */
|
|
if(data_copy(caller->p_endpoint, (vir_bytes) m_ptr->PR_NAME_PTR,
|
|
KERNEL, (vir_bytes) rp->p_name, (phys_bytes) P_NAME_LEN - 1) != OK)
|
|
strncpy(rp->p_name, "<unset>", P_NAME_LEN);
|
|
|
|
/* Do architecture-specific exec() stuff. */
|
|
arch_pre_exec(rp, (u32_t) m_ptr->PR_IP_PTR, (u32_t) m_ptr->PR_STACK_PTR);
|
|
|
|
/* No reply to EXEC call */
|
|
RTS_UNSET(rp, RTS_RECEIVING);
|
|
|
|
/* Mark fpu_regs contents as not significant, so fpu
|
|
* will be initialized, when it's used next time. */
|
|
rp->p_misc_flags &= ~MF_FPU_INITIALIZED;
|
|
return(OK);
|
|
}
|
|
#endif /* USE_EXEC */
|
|
|