Poly/ML for Isabelle

====================

This compilation of Poly/ML 5.4 is based on the official sources from

http://www.polyml.org with the following patch from the SVN (which is

also part of the fixes-5.4 source tree):

------------------------------------------------------------------------

r1214 | dcjm | 2010-09-14 20:03:52 +0200 (Tue, 14 Sep 2010) | 1 line

Fix to arbitrary precision emulation for X86.  A GC during emulating

an operation could cause the stack to move resulting in the result of

the operation not being stored into the result register.

------------------------------------------------------------------------

diff libpolyml/x86_dep.cpp libpolyml/x86_dep.cpp.orig

1308,1311c1308

<                     if (! inConsts) {

<                         destReg = get_reg(taskData, rrr); // May have moved because of a GC.

<                         *destReg = PolyWord::FromUnsigned(destReg->AsUnsigned()+1);

<                     }

---

>                     if (! inConsts) *destReg = PolyWord::FromUnsigned(destReg->AsUnsigned()+1);

1344,1347c1341

<                     if (! inConsts) {

<                         destReg = get_reg(taskData, rrr); // May have moved because of a GC.

<                         *destReg = PolyWord::FromUnsigned(destReg->AsUnsigned()-1);

<                     }

---

>                     if (! inConsts) *destReg = PolyWord::FromUnsigned(destReg->AsUnsigned()-1);

------------------------------------------------------------------------

The included build script is used like this:

  ./build src x86-linux --with-gmp

  ./build src x86_64-linux --with-gmp

  ./build src x86-darwin --without-gmp

  ./build src x86_64-darwin --without-gmp

  ./build src x86-cygwin --with-gmp

The multi-platform directory layout for executables and shared

libraries accommodates the standard ML_HOME settings for Isabelle.

Also note that the separate "sha1" library module is required for

efficient digesting of strings according to SHA-1.

	Makarius

	20-Dec-2010