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| author | Roland McGrath <roland@gnu.org> | 1999-07-11 17:16:47 +0000 |
|---|---|---|
| committer | Roland McGrath <roland@gnu.org> | 1999-07-11 17:16:47 +0000 |
| commit | c6496762e45d8cefb701a22e6d5b311ba35770e0 (patch) | |
| tree | 14343187ca81c0d87d1c5e1476224295964f7e41 /sysdeps | |
| parent | 78d37b350020d4bef2763d4f048fbd266796563a (diff) | |
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* sysdeps/mach/hurd/brk.c (static_data_start): New variable.
(_hurd_set_brk, init_brk): Use that instead of &__data_start.
Initialize it from &__data_start if defined, or else &_end.
1999-07-11 Roland McGrath <roland@baalperazim.frob.com>
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/mach/hurd/brk.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sysdeps/mach/hurd/brk.c b/sysdeps/mach/hurd/brk.c index c6eabb21d8..3a5ed54247 100644 --- a/sysdeps/mach/hurd/brk.c +++ b/sysdeps/mach/hurd/brk.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc. +/* Copyright (C) 1991,92,93,94,95,96,97,99 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -41,6 +41,8 @@ weak_alias (_hurd_brk, ___brk_addr) struct mutex _hurd_brk_lock; extern int __data_start, _end; +weak_extern (__data_start) +static vm_address_t static_data_start; /* Set the end of the process's data space to INADDR. @@ -81,7 +83,7 @@ _hurd_set_brk (vm_address_t addr) rlimit = _hurd_rlimits[RLIMIT_DATA].rlim_cur; __mutex_unlock (&_hurd_rlimit_lock); - if (addr - (vm_address_t) &__data_start > rlimit) + if (addr - static_data_start > rlimit) { /* Need to increase the resource limit. */ errno = ENOMEM; @@ -114,6 +116,8 @@ init_brk (void) __mutex_init (&_hurd_brk_lock); + static_data_start = (vm_address_t) (&__data_start ?: &_end); + /* If _hurd_brk is already set, don't change it. The assumption is that it was set in a previous run before something like Emacs's unexec was called and dumped all the data up to the break at that point. */ @@ -122,7 +126,7 @@ init_brk (void) pagend = round_page (_hurd_brk); - _hurd_data_end = round_page ((vm_address_t) &__data_start + DATA_SIZE); + _hurd_data_end = round_page (static_data_start + DATA_SIZE); if (pagend < _hurd_data_end) { |