From 3ba50a15ebd976f7a88393e2e45dc14b6478b9a9 Mon Sep 17 00:00:00 2001 From: "Arnold D. Robbins" Date: Fri, 16 Jul 2010 14:52:31 +0300 Subject: Move to gawk-3.1.7. --- libsigsegv/src/stackvma-simple.c | 42 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 libsigsegv/src/stackvma-simple.c (limited to 'libsigsegv/src/stackvma-simple.c') diff --git a/libsigsegv/src/stackvma-simple.c b/libsigsegv/src/stackvma-simple.c new file mode 100644 index 00000000..3e800373 --- /dev/null +++ b/libsigsegv/src/stackvma-simple.c @@ -0,0 +1,42 @@ +/* Determine the virtual memory area of a given address. + Copyright (C) 2006 Bruno Haible + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* This file contains the proximity test function for the simple cases, where + the OS has an API for enumerating the mapped ranges of virtual memory. */ + +#if STACK_DIRECTION < 0 + +/* Info about the gap between this VMA and the previous one. + addr must be < vma->start. */ +static int +simple_is_near_this (unsigned long addr, struct vma_struct *vma) +{ + return (vma->start - addr <= (vma->start - vma->prev_end) / 2); +} + +#endif +#if STACK_DIRECTION > 0 + +/* Info about the gap between this VMA and the next one. + addr must be > vma->end - 1. */ +static int +simple_is_near_this (unsigned long addr, struct vma_struct *vma) +{ + return (addr - vma->end < (vma->next_start - vma->end) / 2); +} + +#endif -- cgit v1.2.3