diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 1999-11-05 01:18:02 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 1999-11-05 01:18:02 +0000 |
| commit | 8332337530b29e3156a5e9c2842f404a3a07ab9b (patch) | |
| tree | f69c5b139ad7aa90017f0e06ad21a5a46edd54fa /sys/kern/exec_subr.c | |
| parent | 5da8f7d8903617ae0b00ee23a3c3e4614ee07563 (diff) | |
more stack direction fixes; art@ ok
Diffstat (limited to 'sys/kern/exec_subr.c')
| -rw-r--r-- | sys/kern/exec_subr.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sys/kern/exec_subr.c b/sys/kern/exec_subr.c index 054fae50571..d29f31884f6 100644 --- a/sys/kern/exec_subr.c +++ b/sys/kern/exec_subr.c @@ -1,4 +1,4 @@ -/* $OpenBSD: exec_subr.c,v 1.6 1999/02/26 05:14:27 art Exp $ */ +/* $OpenBSD: exec_subr.c,v 1.7 1999/11/05 01:18:01 mickey Exp $ */ /* $NetBSD: exec_subr.c,v 1.9 1994/12/04 03:10:42 mycroft Exp $ */ /* @@ -315,7 +315,11 @@ exec_setup_stack(p, epp) struct exec_package *epp; { +#ifdef MACHINE_STACK_GROWS_UP + epp->ep_maxsaddr = USRSTACK + MAXSSIZ; +#else epp->ep_maxsaddr = USRSTACK - MAXSSIZ; +#endif epp->ep_minsaddr = USRSTACK; epp->ep_ssize = round_page(p->p_rlimit[RLIMIT_STACK].rlim_cur); @@ -330,12 +334,21 @@ exec_setup_stack(p, epp) * note that in memory, things assumed to be: 0 ....... ep_maxsaddr * <stack> ep_minsaddr */ +#ifdef MACHINE_STACK_GROWS_UP + NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, + (epp->ep_maxsaddr - (epp->ep_minsaddr + epp->ep_ssize)), + epp->ep_minsaddr + epp->ep_ssize, NULLVP, 0, VM_PROT_NONE); + NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, epp->ep_ssize, + epp->ep_minsaddr, NULLVP, 0, + VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE); +#else NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, ((epp->ep_minsaddr - epp->ep_ssize) - epp->ep_maxsaddr), epp->ep_maxsaddr, NULLVP, 0, VM_PROT_NONE); NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, epp->ep_ssize, (epp->ep_minsaddr - epp->ep_ssize), NULLVP, 0, VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE); +#endif return 0; } |