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| author | julian <julian@FreeBSD.org> | 1999-01-06 23:05:42 +0000 |
|---|---|---|
| committer | julian <julian@FreeBSD.org> | 1999-01-06 23:05:42 +0000 |
| commit | 4666ac50272776168d29d2c4142de771daa30381 (patch) | |
| tree | 132bbd3c7ed8de9adf36dcd6258013de903e583a /sys/vm/vm_map.h | |
| parent | 6b0a11c013bb11bbed19aea0a563ebb393a899ef (diff) | |
| download | FreeBSD-src-4666ac50272776168d29d2c4142de771daa30381.zip FreeBSD-src-4666ac50272776168d29d2c4142de771daa30381.tar.gz | |
Add (but don't activate) code for a special VM option to make
downward growing stacks more general.
Add (but don't activate) code to use the new stack facility
when running threads, (specifically the linux threads support).
This allows people to use both linux compiled linuxthreads, and also the
native FreeBSD linux-threads port.
The code is conditional on VM_STACK. Not using this will
produce the old heavily tested system.
Submitted by: Richard Seaman <dick@tar.com>
Diffstat (limited to 'sys/vm/vm_map.h')
| -rw-r--r-- | sys/vm/vm_map.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/vm/vm_map.h b/sys/vm/vm_map.h index b7c6cd5..4d61a3f 100644 --- a/sys/vm/vm_map.h +++ b/sys/vm/vm_map.h @@ -61,7 +61,7 @@ * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. * - * $Id: vm_map.h,v 1.31 1998/01/17 09:16:52 dyson Exp $ + * $Id: vm_map.h,v 1.32 1998/01/22 17:30:38 dyson Exp $ */ /* @@ -102,6 +102,9 @@ struct vm_map_entry { struct vm_map_entry *next; /* next entry */ vm_offset_t start; /* start address */ vm_offset_t end; /* end address */ +#ifdef VM_STACK + vm_offset_t avail_ssize; /* amt can grow if this is a stack */ +#endif union vm_map_object object; /* object I point to */ vm_ooffset_t offset; /* offset into object */ u_char eflags; /* map entry flags */ @@ -335,6 +338,10 @@ void vm_map_simplify_entry __P((vm_map_t, vm_map_entry_t)); void vm_init2 __P((void)); int vm_uiomove __P((vm_map_t, vm_object_t, off_t, int, vm_offset_t, int *)); void vm_freeze_copyopts __P((vm_object_t, vm_pindex_t, vm_pindex_t)); +#ifdef VM_STACK +int vm_map_stack __P((vm_map_t, vm_offset_t, vm_size_t, vm_prot_t, vm_prot_t, int)); +int vm_map_growstack __P((struct proc *p, vm_offset_t addr)); +#endif #endif #endif /* _VM_MAP_ */ |
