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Allow constant pointer inference into multiple address spaces

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This commit is contained in:
caheckman 2019-12-19 17:32:07 -05:00
parent b5e2efff77
commit 2e80935edb
12 changed files with 181 additions and 30 deletions
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5
Ghidra/Features/Decompiler/src/decompile/cpp/space.cc
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@ -17,9 +17,11 @@
#include "translate.hh"
/// Calculate \e highest based on \e addressSize, and \e wordsize.
/// This also calculates the default pointerLowerBound
void AddrSpace::calcScaleMask(void)
{
pointerLowerBound = (addressSize < 3) ? 0x100: 0x1000;
highest = calc_mask(addressSize); // Maximum address
highest = highest * wordsize + (wordsize-1); // Maximum byte address
}
@ -47,6 +49,7 @@ AddrSpace::AddrSpace(AddrSpaceManager *m,const Translate *t,spacetype tp,const s
index = ind;
delay = dl;
deadcodedelay = dl; // Deadcode delay initially starts the same as heritage delay
minimumPointerSize = 0; // (initially) assume pointers must match the space size exactly
shortcut = ' '; // Placeholder meaning shortcut is unassigned
// These are the flags we allow to be set from constructor
@ -72,6 +75,7 @@ AddrSpace::AddrSpace(AddrSpaceManager *m,const Translate *t,spacetype tp)
type = tp;
flags = (heritaged | does_deadcode); // Always on unless explicitly turned off in derived constructor
wordsize = 1;
minimumPointerSize = 0;
shortcut = ' ';
// We let big_endian get set by attribute
}
@ -102,6 +106,7 @@ void AddrSpace::truncateSpace(uint4 newsize)
{
setFlags(truncated);
addressSize = newsize;
minimumPointerSize = newsize;
calcScaleMask();
}