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Author SHA1 Message Date
Ludovic Court`es
f41cb00ce2 Fixed a stack leak. Now observing actual performance.
* src/*.[ch]:  Replaced `scm_mem2symbol' by `scm_from_locale_symboln' and
  `scm_ulong2num' by `scm_from_ulong'.
* src/vm_system.c (tail-call):  Fixed stack leak (SP lacked decrement by
  one more Scheme object in the tail-recursive case).
* benchmark/measure.scm (measure):  Make sure we are using the compiled
  procedure (i.e. a program object) when measuring.  This yields better
  results than before.  :-)
* doc/guile-vm.texi:  Augmented the instruction set documentation with
  branch instructions, `call' and `tail-call'.

git-archimport-id: lcourtes@laas.fr--2004-libre/guile-vm--revival--0.6--patch-7
2008-04-25 19:09:30 +02:00
Ludovic Court`es
2d80426a3e Improved the VM's efficiency. The VM is as fast as the interpreter. :-(
* benchmark/lib.scm:  New file.
* benchmark/measure.scm:  New file.
* README:  Added useful pointers to various threads.
* doc/guile-vm.texi:  Fixed the description of `load-program' (it now expects
  _immediate_ integers).
* src/*.[ch]:  Use immediate integers whereever possible, as in the original
  code.  For `CONS', use `scm_cell' rather than `scm_cons'.

git-archimport-id: lcourtes@laas.fr--2004-libre/guile-vm--revival--0.6--patch-6
2008-04-25 19:09:30 +02:00
Ludovic Court`es
238e7a11a8 Got the VM up and running! Augmented the documentation.
* src/*.[ch]:  Replaced the remaining `SCM_MAKINUM', and changed `SCM_VELTS'
  into `scm_vector_elements ()'.
* src/vm_loader.c (link):  Fixed so that it pushed a variable object on
  the stack.
* src/vm_system.c (variable-ref):  Fixed so that it uses `scm_variable_ref ()'
  and friends.
* module/system/vm/assemble.scm (dump-object!):  Fixed the string case.
* src/vm_engine.h (CONS):  Use `scm_cons' instead of `SCM_NEWCELL'.
* doc/guile-vm.texi:  Added actual instruction definitions, explanations of
  the program invocation mechanism, programs' object tables, etc., in the
  `Instruction Set' chapter.

git-archimport-id: lcourtes@laas.fr--2004-libre/guile-vm--revival--0.6--patch-5
2008-04-25 19:09:30 +02:00
Ludovic Court`es
fa19602c28 Fixed the compiler, got the disassembler working.
* doc/guile-vm.texi:  Texified and cleaned up.
* src/vm.c:  Use `scm_from_locale_string ()' instead of `scm_makfrom0str ()'.
* src/vm_engine.c:  Likewise.
* src/programs.c (scm_program_bytecode):  Return a u8vector instead of a string.
* module/system/vm/conv.scm (make-byte-decoder):  Fixed a few things wrt. to
  the string to u8vector transition.
* src/objcodes.c (bytecode->objcode):  Fixed a bug where the last 10 bytes of
  the bytecode where ignored.
* module/system/vm/assemble.scm (dump-object!):  Don't convert everything
  to a u8vector, keep strings where it makes sense.
* module/system/vm/conv.scm (code->bytes):  Accordingly, convert strings to
  u8vectors when needed.
  (make-byte-decoder):  Accordingly too, when decoding instructions, return
  variable-length instructions' argument as strings except for `load-program'.
* module/system/vm/disasm.scm:  Export `disassemble-bytecode'.

git-archimport-id: lcourtes@laas.fr--2004-libre/guile-vm--revival--0.6--patch-4
2008-04-25 19:09:30 +02:00
Keisuke Nishida
015959cb4a ChangeLog 2000-09-22 17:38:49 +00:00
Keisuke Nishida
08d4430d38 Initial import. 2000-08-22 16:01:18 +00:00
Keisuke Nishida
a98cef7e6c Initial revision 2000-08-22 15:54:19 +00:00