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VM: Refactor segments.hpp to Factor style

db4
Erik Charlebois 2013-05-11 22:28:18 -04:00
parent b2929acff6
commit b1ccfa2194
1 changed files with 14 additions and 23 deletions
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37
vm/segments.hpp
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@ -1,35 +1,26 @@
namespace factor namespace factor {
{
inline cell align_page(cell a) inline cell align_page(cell a) { return align(a, getpagesize()); }
{
return align(a,getpagesize());
}
/* segments set up guard pages to check for under/overflow. /* segments set up guard pages to check for under/overflow.
size must be a multiple of the page size */ size must be a multiple of the page size */
struct segment { struct segment {
cell start; cell start;
cell size; cell size;
cell end; cell end;
explicit segment(cell size, bool executable_p); explicit segment(cell size, bool executable_p);
~segment(); ~segment();
bool underflow_p(cell addr) bool underflow_p(cell addr) {
{ return (addr >= start - getpagesize() && addr < start);
return (addr >= start - getpagesize() && addr < start); }
}
bool overflow_p(cell addr) bool overflow_p(cell addr) {
{ return (addr >= end && addr < end + getpagesize());
return (addr >= end && addr < end + getpagesize()); }
}
bool in_segment_p(cell addr) bool in_segment_p(cell addr) { return (addr >= start && addr < end); }
{
return (addr >= start && addr < end);
}
}; };
} }