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* Update license notices in all C filesAndy Wingo2018-06-201-17/+17
| | | | | Update to newest recommended license notices from the FSF. Everything stays LGPLv3+ except guile-readline which is GPLv3+.
* libguile header files have uniform format for copyright declarationsAndy Wingo2018-06-201-1/+2
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* Remove (C) from copyright statementsAndy Wingo2018-06-201-1/+1
| | | | | | As the FSF advises, 'There is no legal significance to using the three-character sequence “(C)”, but it does no harm.' It does take up space though! For that reason, we remove it here from our C files.
* Rename __scm.h to scm.hAndy Wingo2018-06-201-1/+1
| | | | * libguile/scm.h: Rename. Update all includers.
* Remove Emacs local variables comments in Guile sourceAndy Wingo2018-06-201-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .dir-locals.el file in the repository is sufficient for Emacs users. * libguile/__scm.h: * libguile/alist.c: * libguile/alist.h: * libguile/array-handle.c: * libguile/array-handle.h: * libguile/array-map.c: * libguile/array-map.h: * libguile/arrays.c: * libguile/arrays.h: * libguile/async.c: * libguile/async.h: * libguile/backtrace.c: * libguile/backtrace.h: * libguile/bitvectors.c: * libguile/bitvectors.h: * libguile/boolean.c: * libguile/boolean.h: * libguile/chars.c: * libguile/chars.h: * libguile/chooks.c: * libguile/chooks.h: * libguile/continuations.c: * libguile/continuations.h: * libguile/control.c: * libguile/conv-integer.i.c: * libguile/debug-malloc.h: * libguile/debug.c: * libguile/debug.h: * libguile/deprecation.c: * libguile/deprecation.h: * libguile/dynl.c: * libguile/dynl.h: * libguile/dynstack.c: * libguile/dynstack.h: * libguile/dynwind.c: * libguile/dynwind.h: * libguile/eq.c: * libguile/eq.h: * libguile/error.c: * libguile/error.h: * libguile/eval.c: * libguile/eval.h: * libguile/evalext.c: * libguile/evalext.h: * libguile/expand.c: * libguile/expand.h: * libguile/extensions.c: * libguile/extensions.h: * libguile/feature.c: * libguile/feature.h: * libguile/filesys.c: * libguile/filesys.h: * libguile/fluids.c: * libguile/fluids.h: * libguile/foreign.c: * libguile/fports.c: * libguile/fports.h: * libguile/frames.c: * libguile/frames.h: * libguile/gc-inline.h: * libguile/gc.c: * libguile/gc.h: * libguile/generalized-arrays.c: * libguile/generalized-arrays.h: * libguile/generalized-vectors.c: * libguile/generalized-vectors.h: * libguile/gettext.c: * libguile/gettext.h: * libguile/goops.c: * libguile/goops.h: * libguile/gsubr.c: * libguile/gsubr.h: * libguile/guardians.c: * libguile/guardians.h: * libguile/guile.c: * libguile/hash.c: * libguile/hash.h: * libguile/hashtab.c: * libguile/hashtab.h: * libguile/hooks.c: * libguile/hooks.h: * libguile/i18n.c: * libguile/i18n.h: * libguile/init.c: * libguile/init.h: * libguile/instructions.c: * libguile/instructions.h: * libguile/intrinsics.c: * libguile/intrinsics.h: * libguile/ioext.c: * libguile/ioext.h: * libguile/iselect.h: * libguile/keywords.c: * libguile/keywords.h: * libguile/list.c: * libguile/list.h: * libguile/load.c: * libguile/load.h: * libguile/loader.c: * libguile/loader.h: * libguile/macros.c: * libguile/macros.h: * libguile/mallocs.c: * libguile/mallocs.h: * libguile/memmove.c: * libguile/memoize.c: * libguile/memoize.h: * libguile/modules.c: * libguile/modules.h: * libguile/net_db.c: * libguile/net_db.h: * libguile/null-threads.c: * libguile/null-threads.h: * libguile/numbers.c: * libguile/numbers.h: * libguile/objprop.c: * libguile/objprop.h: * libguile/options.c: * libguile/options.h: * libguile/pairs.c: * libguile/pairs.h: * libguile/poll.c: * libguile/poll.h: * libguile/ports.c: * libguile/ports.h: * libguile/posix.c: * libguile/posix.h: * libguile/print.c: * libguile/print.h: * libguile/procprop.c: * libguile/procprop.h: * libguile/procs.c: * libguile/procs.h: * libguile/programs.c: * libguile/programs.h: * libguile/promises.c: * libguile/promises.h: * libguile/pthread-threads.h: * libguile/random.c: * libguile/random.h: * libguile/rdelim.c: * libguile/rdelim.h: * libguile/read.c: * libguile/read.h: * libguile/regex-posix.c: * libguile/regex-posix.h: * libguile/rw.c: * libguile/rw.h: * libguile/scmsigs.c: * libguile/scmsigs.h: * libguile/script.c: * libguile/script.h: * libguile/simpos.c: * libguile/simpos.h: * libguile/smob.c: * libguile/smob.h: * libguile/snarf.h: * libguile/socket.c: * libguile/socket.h: * libguile/sort.c: * libguile/sort.h: * libguile/srcprop.c: * libguile/srcprop.h: * libguile/stackchk.c: * libguile/stackchk.h: * libguile/stacks.c: * libguile/stacks.h: * libguile/stime.c: * libguile/stime.h: * libguile/strerror.c: * libguile/strings.c: * libguile/strings.h: * libguile/strorder.c: * libguile/strorder.h: * libguile/strports.c: * libguile/strports.h: * libguile/struct.c: * libguile/struct.h: * libguile/symbols.c: * libguile/symbols.h: * libguile/syntax.c: * libguile/syscalls.h: * libguile/tags.h: * libguile/threads.c: * libguile/threads.h: * libguile/throw.c: * libguile/throw.h: * libguile/trees.h: * libguile/unicode.c: * libguile/unicode.h: * libguile/uniform.c: * libguile/uniform.h: * libguile/values.c: * libguile/values.h: * libguile/variable.c: * libguile/variable.h: * libguile/vectors.c: * libguile/vectors.h: * libguile/version.c: * libguile/vm-engine.c: * libguile/vm-expand.h: * libguile/vm.c: * libguile/vm.h: * libguile/vports.c: * libguile/vports.h: * libguile/weak-list.h: * libguile/weak-set.c: * libguile/weak-set.h: * libguile/weak-table.c: * libguile/weak-table.h: * libguile/weak-vector.c: * libguile/weak-vector.h: Remove needless trailing comments.
* Fix libguile subcomponent headers not to include <libguile.h>Andy Wingo2018-06-141-2/+2
| | | | | | | | | | | | | | | | | | | * libguile/bytevectors.h: Include uniform.h, for use in the macros. * libguile/extensions.h: Include libpath.h, for the SCM_EFFECTIVE_VERSION, which is almost always used with these routines. * libguile/frames.h: * libguile/instructions.h: * libguile/intrinsics.h: * libguile/loader.h: * libguile/programs.h: * libguile/vm.h: Include <libguile/__scm.h> instead of <libguile.h>. Cuts a circular include, but also precipitates a lot of maintenance in the .c files. * libguile/*.c: Update C files to add needed all needed includes that before were getting automatically pulled in by the indirect inclusion of libguile.h.
* Move RTL unpack macros to vm-engine.cAndy Wingo2013-11-191-40/+0
| | | | | | * libguile/instructions.h: Remove SCM_UNPACK macros from here. * libguile/vm-engine.c: Add them here, without the RTL_, and without the SCM_ prefix.
* Change SCM_PACK_RTL macros to SCM_PACK_OP / SCM_PACK_OP_ARGAndy Wingo2013-11-191-5/+10
| | | | | | | | | | | | | | | | | * libguile/instructions.h: Guard in BUILDING_LIBGUILE. (SCM_PACK_OP_24): (SCM_PACK_OP_8_8_8): (SCM_PACK_OP_8_16): (SCM_PACK_OP_16_8): (SCM_PACK_OP_12_12): Rename from SCM_PACK_RTL_*, and splice in the opcode. (SCM_PACK_OP_ARG_8_24): New helper. * libguile/vm.c: * libguile/gsubr.c: * libguile/foreign.c: * libguile/control.c: * libguile/continuations.c: Adapt.
* scm_rtl_op_* -> scm_op_*Andy Wingo2013-11-191-2/+2
| | | | | | | | | | | | * libguile/instructions.h (scm_opcode): Rename from scm_rtl_opcode. Rename opcodes from scm_rtl_op_* to scm_op_*. * libguile/continuations.c: * libguile/control.c: * libguile/foreign.c: * libguile/gsubr.c: * libguile/instructions.c: * libguile/vm.c: Adapt.
* (system vm instruction) rtl-instruction-list -> (language rtl) instruction-listAndy Wingo2013-11-191-1/+1
| | | | | | | | | | | | | | | | | | | * libguile/instructions.c (struct scm_instruction, fetch_instruction_table) (scm_instruction_list): Remove rtl_ infix. * libguile/instructions.h: Adapt. * module/system/vm/instruction.scm: Remove. * module/language/rtl.scm: Export instruction-list from here. * module/Makefile.am: * module/language/cps/primitives.scm: * module/system/vm/assembler.scm: * module/system/vm/disassembler.scm: * module/system/vm/frame.scm: * module/system/vm/program.scm: * module/system/vm/trace.scm: * module/system/vm/traps.scm: Adapt.
* Remove stack programs, objcode, and the old VM.Andy Wingo2013-11-081-17/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * libguile/Makefile.am: * libguile/vm-i-loader.c: * libguile/vm-i-scheme.c: * libguile/vm-i-system.c: Remove the old VM files, and the rules to build the .i files. * libguile/vm-engine.c: * libguile/vm.c: Remove the old VM. Woot! * libguile/_scm.h (SCM_OBJCODE_COOKIE, SCM_OBJCODE_ENDIANNESS_OFFSET) (SCM_OBJCODE_WORD_SIZE_OFFSET): Remove. * libguile/evalext.c (scm_self_evaluating_p): Remove objcode and program cases. * libguile/frames.c (scm_frame_num_locals, scm_frame_previous): Remove program cases. * libguile/gc.c (scm_i_tag_name): Remove objcode case. * libguile/goops.c (scm_class_of, create_standard_classes): Remove objcode and program cases. * libguile/instructions.h: * libguile/instructions.c (scm_instruction_list, scm_instruction_p) (scm_instruction_length, scm_instruction_pops, scm_instruction_pushes) (scm_instruction_to_opcode, scm_opcode_to_instruction): Remove old VM code. * libguile/objcodes.h: * libguile/objcodes.c: Remove the objcode data type, and handling for objcode files. * libguile/print.c: Remove objcode and program printers. * libguile/procprop.c: Remove program cases. * libguile/procs.c: * libguile/programs.h: * libguile/programs.c: Remove old program code. * libguile/smob.c: Remove objcodes include. * libguile/snarf.h: Remove static program defines. * libguile/stacks.c: Remove program case. * libguile/tags.h: Remove program and objcode tc7s. * module/ice-9/session.scm (procedure-arguments) * module/language/tree-il/analyze.scm (validate-arity) * module/statprof.scm (get-call-data, procedure=?) * module/system/vm/frame.scm (frame-bindings) (frame-call-representation): Remove old program cases. * module/system/repl/debug.scm (frame->module): Add a FIXME. * module/system/vm/instruction.scm: Remove old exports. * module/system/vm/program.scm: Remove old program code.
* Foreign procedures are RTL programsAndy Wingo2013-10-181-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * libguile/foreign.c: Convert to using RTL stubs. Because RTL code has different GC characteristics than objcode -- it's mostly assumed that RTL code will never go away -- we go ahead and pre-generate code for 100 arguments. This is actually less memory than the stack VM code, and doesn't require any relocations at load-time: bonus! We'll cross the >=100 args bridge if we ever come to it. (get_foreign_stub_code) New function. (scm_i_foreign_arity): New helper, like scm_i_primitive_arity. (cif_to_procedure): Rework to make RTL programs. * libguile/foreign.h: Declare scm_pointer_to_scm and scm_scm_to_pointer. Declare new internal helpers. * libguile/gsubr.c (create_subr): Refactor to set the flags when the object is allocated. * libguile/instructions.h: Define SCM_PACK_RTL_12_12. * libguile/programs.c (scm_i_rtl_program_minimum_arity): Dispatch to scm_i_foreign_arity if the procedure has the FOREIGN flag. * libguile/programs.h (SCM_F_PROGRAM_IS_FOREIGN) (SCM_PROGRAM_IS_FOREIGN): New interfaces. * test-suite/tests/foreign.test ("procedure->pointer"): Add a test for foreign arities.
* RTL VM: Fix SCM_PACK_RTL_* macros.Mark H Weaver2013-08-121-2/+2
| | | | | * libguile/instructions.h (SCM_PACK_RTL_8_8_8): Fix typo. (SCM_PACK_RTL_16_8): Fix erroneous shift offset.
* add new rtl vmAndy Wingo2013-05-311-1/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * libguile/vm-engine.c (rtl_vm_engine): Add new VM. (vm_engine): Add support for calling RTL programs. * libguile/tags.h (scm_tc7_rtl_program): New type for procedures that run on the new VM. * libguile/evalext.c (scm_self_evaluating_p): * libguile/goops.c (scm_class_of): * libguile/print.c (iprin1): * libguile/procprop.c (scm_i_procedure_arity): * libguile/procs.c (scm_procedure_p): Add hooks for the new tc7. * libguile/programs.h: * libguile/programs.c (scm_make_rtl_program, scm_i_rtl_program_print) (scm_rtl_program_p, scm_rtl_program_code): * module/system/vm/program.scm: Add constructors and accessors for the new "RTL programs". * libguile/vm.c (rtl_boot_continuation): Define a boot program. (rtl_apply, rtl_values): New static RTL programs. * libguile/frames.c (scm_frame_num_locals): Adapt for frames of RTL programs. * libguile/frames.h: Add description of RTL frames. * libguile/Makefile.am: Add rules to generate vm-operations.h. * .gitignore: Ignore vm-operations.h. * module/system/vm/instruction.scm: * libguile/instructions.c: * libguile/instructions.h: Use vm-operations.h to define enumerated values for the new RTL opcodes. Define some helper macros to pack and unpack 32-bit instruction words. (rtl-instruction-list): New function, exported by (system vm instruction). * libguile/objcodes.c: Wire up the bits needed to detect the new RTL bytecode and load it, as appropriate.
* fix race in which some instruction name symbols could go unmarkedAndy Wingo2009-07-141-1/+0
| | | | | | | | | | * libguile/instructions.c: In loops, replace scm_op_last with SCM_VM_NUM_INSTRUCTIONS. (fetch_instruction_table): Protect the instruction symbols from collection. Before they were only marked by the name->opcode hash table, leading to races in which they could be collected. (scm_lookup_instruction_by_name): Protect the hash table earlier, as it's not actually a stack variable, since it's static.
* add bytevector ops to the vmAndy Wingo2009-06-261-2/+2
| | | | | | | | | | | | | * libguile/instructions.h (SCM_VM_NUM_INSTRUCTIONS): Enlarge to 255. Not sure what performance effects this will have. * libguile/vm-engine.c: Add new error case, vm_error_not_a_bytevector. * libguile/vm-engine.h: Don't assign specific registers for i386. Having added the new VM vector ops, GCC 4.4 is erroring for me now. * libguile/vm-i-scheme.c: Add bytevector-specific ops to the VM. We don't actually use them yet, though.
* Change Guile license to LGPLv3+Neil Jerram2009-06-171-6/+7
| | | | | | | | | | (Not quite finished, the following will be done tomorrow. module/srfi/*.scm module/rnrs/*.scm module/scripts/*.scm testsuite/*.scm guile-readline/* )
* adjust VM copyright notices to LGPL, use SCM_INTERNAL/API properlyAndy Wingo2009-05-261-45/+21
| | | | | | | | | | | | | | | | | | | | * libguile/frames.c: * libguile/frames.h: * libguile/instructions.c: * libguile/instructions.h: * libguile/objcodes.c: * libguile/objcodes.h: * libguile/programs.c: * libguile/programs.h: * libguile/vm-bootstrap.h: * libguile/vm-engine.c: * libguile/vm-engine.h: * libguile/vm-expand.h: * libguile/vm-i-scheme.c: * libguile/vm.c: * libguile/vm.h: Update to use SCM_API and SCM_INTERNAL correctly. Adjust copyright to be the same as the copyright of Guile itself, which should be fine given that the FSF holds the whole thing.
* non-srcdir build fixesAndy Wingo2009-03-171-4/+4
| | | | | | | | | | | | | | | | | | | | | | | * guile-tools.in: Fix the checks to account for non-srcdir builds. * libguile/frames.c: * libguile/objcodes.c: * libguile/programs.c: * libguile/instructions.c: * libguile/vm.c: Fix snarf-includes to cope with non-srcdir builds. * libguile/instructions.h: * libguile/instructions.c: Fix the stubs inclusion to be non-srcdir compatible. * libguile/vm-expand.h (VM_DEFINE_INSTRUCTION): Fix some things so as not to require the instructions.h defintitions, since we have the codes already. Not important tho :) * pre-inst-guile-env.in: Minor tweak that should have no effect. * test-suite/standalone/Makefile.am (all-local): Remove a chmod +x step, the configure.ac rule should do that if necessary.
* static opcodes; refactor program/objcode division; use new assembly pipelineAndy Wingo2009-01-291-26/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * gdbinit: Untested attempts to get the stack fondling macros to deal with the new program representation. * libguile/frames.c (scm_vm_frame_arguments, scm_vm_frame_source) (scm_vm_frame_local_ref, scm_vm_frame_local_set_x): SCM_PROGRAM_DATA is a struct scm_objcode*. * libguile/instructions.h: * libguile/instructions.c: Hide the instruction table and the struct scm_instruction structure; all access to instructions now goes through procedures. This is because instructions are no longer in a packed array indexed by opcode. Also, declare a mask that all instructions should fit in. * libguile/objcodes.h: * libguile/objcodes.c: Rewrite so that object code directly maps its arity and length from its bytecode. This makes it unnecessary to keep this information in programs, allowing programs to be simple conses between the code (objcodes) and data (the object table and the closure variables). * libguile/programs.c (scm_make_program): Rework so that make-program takes objcode, an object table, and externals as arguments. It's much clearer this way, and we avoid malloc(). * libguile/stacks.c (is_vm_bootstrap_frame): Update for program/objcode changes. * libguile/vm-engine.c (vm_run): Initialize the jump table on the first run, with the opcodes declared in the instruction sources, and with bad instructions raising an error instead of wandering off into the Unknown. * libguile/vm-engine.h (FETCH_LENGTH): Always represent lengths as 3 bytes. The old code was too error-prone. (NEXT_JUMP): Mask the instruction with SCM_VM_INSTRUCTION_MASK. (NEW_FRAME): Update for program/objcode changes. * libguile/vm-expand.h (VM_DEFINE_FUNCTION, VM_DEFINE_INSTRUCTION) (VM_DEFINE_LOADER): Update so that we explicitly specify opcodes, so that we have a stable bytecode API. * libguile/vm-i-loader.c: Update license to LGPLv2+. Explicitly declare opcodes. (load-integer): Use an int instead of a long as the accumulator; still need to revisit this code at some point, I think. (load-program): Simplify, thankfully!! Just creates the objcode slice and rolls with it. * libguile/vm-i-scheme.c: Number the opcodes explicitly. * libguile/vm-i-system.c: Update license to LGPLv2+. Explicitly declare opcodes. (make-closure): Update for new program API. * libguile/vm.c (vm_make_boot_program): Update for new program/objcode API. Still a bit ugly. (scm_load_compiled_with_vm): Update for new program/objcode API. * module/language/assembly.scm (byte-length): Fix byte-length calculation for loaders, and load-program. (code-pack, code-unpack): Start to move things from (system vm conv) here. (object->code, code->object): More things from conv.scm. * module/language/glil.scm (<glil-program>): Add a new field, closure-level. (make-glil-program, compute-closure-level): Calculate the "closure level" when making a glil program. This is the maximum depth of external binding refs in this closure. (unparse-glil): Fix label serialization. * module/language/glil/compile-assembly.scm (make-meta): Prepend #f for the meta's object table, though maybe in the future we can avoid creating assembly in the first place. (assoc-ref-or-acons, object-index-and-alist): GRRR! Caught again by the different sets of arguments to assoc and assoc-ref! (glil->assembly): Attempt to make the <glil-program> case more readable, and fix the bugs. Sorry I don't know how to comment this change any more than this. (glil->assembly): For <glil-module> serialize the whole key, not just the name. (dump-object): subprogram-code is already a list. Serialize integers as strings, not u8vectors. Fix the order of lists and vectors. * module/language/glil/spec.scm (glil): Switch orders, so we prefer glil -> assembly -> objcode. Actually glil->objcode doesn't work any more, needs to be removed I think. * module/language/objcode/spec.scm (objcode->value): s/objcode->program/make-program/. * module/language/scheme/inline.scm: Add acons inline. * module/system/vm/conv.scm (make-byte-decoder): Skip the first 8 bytes, they are header. Handle subprograms properly. Still needs help though. (decode-length): Lengths are always 3 bytes now. * module/system/vm/disasm.scm: Superficial changes to keep things working. I'd like to fix this better in the future. * module/system/vm/frame.scm (bootstrap-frame?): Fixes for program-bytecode. * module/system/vm/program.scm: Export make-program. It's program-objcode now, no more program-bytecode. * module/system/vm/vm.scm (vm-load): Use make-program. * test-suite/tests/asm-to-bytecode.test: New test, very minimal. * module/system/vm/objcode.scm: Export word-size, byte-order, and write-objcode.
* merge guile-vm into libguile itselfAndy Wingo2008-08-211-0/+99
* ice-9/boot-9.scm: Only define load-compiled as #f if it's not already defined, which won't normally be the case. * libguile/guile-vm.c: Removed, there's no more guile-vm binary. * libguile/frames.c: (with change frame? -> heap-frame?) * libguile/frames.h: * libguile/instructions.c: * libguile/instructions.h: * libguile/objcodes.c: * libguile/objcodes.h: * libguile/programs.c: * libguile/programs.h: * libguile/vm-bootstrap.h: (was bootstrap.h) * libguile/vm-engine.c: (was vm_engine.c) * libguile/vm-engine.h: (was vm_engine.h) * libguile/vm-expand.h: (was vm_expand.h) * libguile/vm-i-loader.c: (was vm_loader.c) * libguile/vm-i-scheme.c: (was vm_scheme.c) * libguile/vm-i-system.c: (was vm_system.c) * libguile/vm.c: * libguile/vm.h: These files moved here from src/, as guile-vm is now a part of libguile. * libguile/init.c: Bootstrap the VM. Yay! * libguile/Makefile.am: The necessary chicanery here. * module/system/vm/Makefile.am: * module/system/vm/bootstrap.scm: * module/system/vm/frame.scm: * module/system/vm/instruction.scm: * module/system/vm/objcode.scm: * module/system/vm/program.scm: * module/system/vm/vm.scm: * pre-inst-guile-env.in: Add builddirs to the load path; add module/ to the path in the empty-$GUILE_LOAD_PATH case as well. * src/Makefile.am: Moved out everything except guilec and guile-disasm, which probably should be moved to the scripts directory? * testsuite/Makefile.am: Update to find guile-vm in the right place. * module/system/vm/Makefile.am: * module/system/vm/bootstrap.scm: Removed bootstrap.scm, scm_init_guile handles the bootstrapping for us. * module/system/vm/frame.scm: * module/system/vm/instruction.scm: * module/system/vm/objcode.scm: * module/system/vm/program.scm: * module/system/vm/vm.scm: Call the init functions in libguile; should fix at some point to avoid the dlopen?