diff options
Diffstat (limited to 'sys/kern/kern_exec.c')
| -rw-r--r-- | sys/kern/kern_exec.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c index c7df555dcef8..2ed383991037 100644 --- a/sys/kern/kern_exec.c +++ b/sys/kern/kern_exec.c @@ -284,7 +284,10 @@ interpret: /* * Copy out strings (args and env) and initialize stack base */ - stack_base = exec_copyout_strings(imgp); + if (p->p_sysent->sv_copyout_strings) + stack_base = (*p->p_sysent->sv_copyout_strings)(imgp); + else + stack_base = exec_copyout_strings(imgp); /* * If custom stack fixup routine present for this process @@ -471,8 +474,12 @@ interpret: p->p_args = NULL; /* Set values passed into the program in registers. */ - setregs(td, imgp->entry_addr, (u_long)(uintptr_t)stack_base, - imgp->ps_strings); + if (p->p_sysent->sv_setregs) + (*p->p_sysent->sv_setregs)(td, imgp->entry_addr, + (u_long)(uintptr_t)stack_base, imgp->ps_strings); + else + setregs(td, imgp->entry_addr, (u_long)(uintptr_t)stack_base, + imgp->ps_strings); /* Cache arguments if they fit inside our allowance */ if (ps_arg_cache_limit >= i + sizeof(struct pargs)) { @@ -628,17 +635,19 @@ exec_unmap_first_page(imgp) * automatically in trap.c. */ int -exec_new_vmspace(imgp) +exec_new_vmspace(imgp, minuser, maxuser, stack_addr) struct image_params *imgp; + vm_offset_t minuser, maxuser, stack_addr; { int error; struct execlist *ep; struct proc *p = imgp->proc; struct vmspace *vmspace = p->p_vmspace; - vm_offset_t stack_addr = USRSTACK - maxssiz; GIANT_REQUIRED; + stack_addr = stack_addr - maxssiz; + imgp->vmspace_destroyed = 1; /* @@ -652,13 +661,15 @@ exec_new_vmspace(imgp) * otherwise, create a new VM space so that other threads are * not disrupted */ - if (vmspace->vm_refcnt == 1) { + if (vmspace->vm_refcnt == 1 + && vm_map_min(&vmspace->vm_map) == minuser + && vm_map_max(&vmspace->vm_map) == maxuser) { if (vmspace->vm_shm) shmexit(p); - pmap_remove_pages(vmspace_pmap(vmspace), 0, VM_MAXUSER_ADDRESS); - vm_map_remove(&vmspace->vm_map, 0, VM_MAXUSER_ADDRESS); + pmap_remove_pages(vmspace_pmap(vmspace), minuser, maxuser); + vm_map_remove(&vmspace->vm_map, minuser, maxuser); } else { - vmspace_exec(p); + vmspace_exec(p, minuser, maxuser); vmspace = p->p_vmspace; } |