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54 commits

Author SHA1 Message Date
Andy Wingo
dc7a33fa87 Merge commit '60617d819d'
Conflicts:
	libguile/continuations.c
	libguile/eval.c
	libguile/goops.c
	libguile/instructions.c
2014-02-07 15:03:17 +01:00
Mark H Weaver
60617d819d Fix thread-unsafe lazy initializations.
* libguile/backtrace.c (print_exception_var): New static variable.
  (init_print_exception_var): New static function.
  (scm_print_exception): Remove thread-unsafe lazy initialization.
  Call 'init_print_exception_var' using 'scm_i_pthread_once'.
  Use 'print_exception_var'.

* libguile/continuations.c (call_cc): New static variable.
  (init_call_cc): New static function.
  (scm_i_call_with_current_continuation): Remove thread-unsafe lazy
  initialization.  Call 'init_call_cc' using 'scm_i_pthread_once'.

* libguile/debug.c (local_eval_var): New static variable.
  (init_local_eval_var): New static function.
  (scm_local_eval): Remove lazy initialization using mutexes.
  Call 'init_local_eval_var' using 'scm_i_pthread_once'.
  Use 'scm_variable_ref' instead of 'SCM_VARIABLE_REF'.

* libguile/eval.c (map_var, for_each_var): New static variables.
  (init_map_var, init_for_each_var): New static functions.
  (scm_map, scm_for_each): Remove thread-unsafe lazy initializations.
  Call 'init_map_var' (or 'init_for_each_var') using 'scm_i_pthread_once'.
  Use 'map_var' (or 'for_each_var').

* libguile/frames.c (frame_arguments_var): New static variable.
  (init_frame_arguments_var): New static function.
  (scm_frame_arguments): Remove thread-unsafe lazy initialization.
  Call 'init_frame_arguments_var' using 'scm_i_pthread_once'.
  Use 'frame_arguments_var'.  Use 'scm_variable_ref' instead of
  'SCM_VARIABLE_REF'.

* libguile/goops.c (delayed_compile_var): New static variable.
  (init_delayed_compile_var): New static function.
  (make_dispatch_procedure): Remove thread-unsafe lazy initialization.
  Call 'init_delayed_compile_var' using 'scm_i_pthread_once'.
  Use 'delayed_compile_var'.  Use 'scm_variable_ref' instead of
  'SCM_VARIABLE_REF'.

* libguile/instructions.c (instructions_by_name): New static variable.
  (init_instructions_by_name): New static function.
  (scm_lookup_instruction_by_name): Remove thread-unsafe lazy
  initialization.  Call 'init_instructions_by_name' using
  'scm_i_pthread_once'.

* libguile/ports.c (current_warning_port_var)
  (current_warning_port_once): New static variables.
  (init_current_warning_port_var): New static function.
  (scm_current_warning_port): Remove lazy initialization using mutexes.
  Call 'init_current_warning_port_var' using 'scm_i_pthread_once'.
  Use 'current_warning_port_var'.
  (scm_set_current_warning_port): Remove thread-unsafe lazy initialization.
  Call 'init_current_warning_port_var' using 'scm_i_pthread_once'.
  Use 'current_warning_port_var'.

* libguile/strings.c (null_stringbuf): New static variable.
  (init_null_stringbuf): New static function.
  (scm_i_make_string): Remove thread-unsafe lazy initialization.
  Call 'init_null_stringbuf' using 'scm_i_pthread_once'.

* libguile/strports.c (eval_string_var, k_module): New static variables.
  (init_eval_string_var_and_k_module): New static function.
  (scm_eval_string_in_module): Remove lazy initialization using mutexes.
  Call 'init_eval_string_var_and_k_module' using 'scm_i_pthread_once'.
  Use 'eval_string_var'.

* libguile/throw.c (CACHE_VAR): Remove incorrect macro.
  (catch_var, throw_var, with_throw_handler_var): New static variables.
  (scm_catch, scm_catch_with_pre_unwind_handler): Remove thread-unsafe
  lazy initialization.  Use 'catch_var'.
  (init_with_throw_handler_var): New static function.
  (scm_with_throw_handler): Remove thread-unsafe lazy initialization.
  Call 'init_with_throw_handler_var' using 'scm_i_pthread_once'.
  Use 'with_throw_handler_var'.
  (scm_throw): Remove thread-unsafe lazy initialization.
  Use 'throw_var'.
  (scm_init_throw): Initialize 'catch_var' and 'throw_var'.
2014-01-23 23:44:11 -05:00
Andy Wingo
5515edc5f2 Heap frame "stack holders" are raw scm_vm / scm_vm_cont pointers
* libguile/frames.h (struct scm_frame): stack_holder is a void*.
* libguile/frames.c (scm_i_frame_stack_base, scm_i_frame_offset): Expect
  stack_holder to be the raw struct scm_vm or scm_vm_cont.

* libguile/continuations.c (scm_i_continuation_to_frame):
* libguile/stacks.c (scm_make_stack)
* libguile/vm.c (vm_dispatch_hook): Adapt creators.
2013-11-21 17:21:37 +01:00
Andy Wingo
050a40db5b Heap frames have a "frame kind" bit
* libguile/frames.h (enum scm_vm_frame_kind, SCM_VM_FRAME_KIND)
  (scm_c_make_frame): Add a "frame kind" bit to the first word.  This
  will allow the "stack holder" to be a non-SCM object.

* libguile/continuations.c (scm_i_continuation_to_frame):
* libguile/frames.c (scm_c_make_frame, scm_frame_previous)
* libguile/stacks.c (scm_make_stack):
* libguile/vm.c (vm_dispatch_hook): Adapt frame creators to set the
  frame kind bit.
2013-11-21 17:13:18 +01:00
Andy Wingo
89b235afd3 Scheme frame objects hold relative stack offsets
* libguile/frames.h: Wrap the C interface to VM frames in
  BUILDING_LIBGUILE.  Change VM frames to record relative offsets into a
  stack held by some other object, so that if the stack moves they will
  remain valid.
* libguile/frames.c (scm_c_make_frame): Remove offset argument.
  (scm_i_frame_offset): Instead, compute the offset from the stack
  holder.
  (scm_i_frame_stack_base): New helper.
  (scm_frame_previous): Adapt.

* libguile/stacks.c (scm_make_stack)
* libguile/vm.c (vm_dispatch_hook):
* libguile/continuations.c (scm_i_continuation_to_frame): Adapt.
2013-11-21 11:20:19 +01:00
Andy Wingo
d798a895cc Remove RTL_ infix from macros
* libguile/programs.h (SCM_PROGRAM_P):
  (SCM_PROGRAM_CODE):
  (SCM_PROGRAM_FREE_VARIABLES):
  (SCM_PROGRAM_FREE_VARIABLE_REF):
  (SCM_PROGRAM_FREE_VARIABLE_SET):
  (SCM_PROGRAM_NUM_FREE_VARIABLES):
  (SCM_VALIDATE_PROGRAM): Remove RTL_ infix.

* libguile/continuations.c:
* libguile/continuations.h:
* libguile/control.c:
* libguile/foreign.c:
* libguile/frames.c:
* libguile/gsubr.c:
* libguile/gsubr.h:
* libguile/procprop.c:
* libguile/procs.c:
* libguile/programs.c:
* libguile/stacks.c:
* libguile/vm-engine.c: Adapt.
2013-11-19 18:28:19 +01:00
Andy Wingo
9121d9f1ac All instruction pointers are now scm_t_uint32*
* libguile/frames.h (SCM_FRAME_RTL_RETURN_ADDRESS)
  (SCM_FRAME_SET_RTL_RETURN_ADDRESS): Remove.  The variants without _RTL
  now work fine.
  (struct scm_vm_frame): Change the return address to be a
  scm_t_uint32*.
  (struct scm_frame): Change IP to be scm_t_uint32*.

* libguile/frames.c (scm_c_make_frame)
* libguile/control.c (reify_partial_continuation, scm_c_abort)
* libguile/dynstack.c (PROMPT_IP)
  (scm_dynstack_push_prompt, scm_dynstack_find_prompt)
* libguile/dynstack.h:
* libguile/vm-engine.c (SYNC_IP, RETURN_ONE_VALUE)
  (call, return-values, prompt): Adapt.
2013-11-19 18:09:34 +01:00
Andy Wingo
b636cdb0f3 Frame pointer points to local 0 instead of local 1
* libguile/frames.h: Change so that fp points at local 0 instead of
  local 1, and clean up a bit.
  (struct scm_vm_frame): Remove program, and rename stack to locals.
  (SCM_FRAME_DATA_ADDRESS): Remove; it was redundant with
  SCM_FRAME_LOWER_ADDRESS.
  (SCM_FRAME_STACK_ADDRESS): Remove; replace with the new
  SCM_FRAME_LOCALS_ADDRESS.
  (SCM_FRAME_UPPER_ADDRESS): Remove; unused.
  (SCM_FRAME_NUM_LOCALS, SCM_FRAME_PREVIOUS_SP): New defines.
  (SCM_FRAME_BYTE_CAST, SCM_FRAME_STACK_CAST): Remove; unused;
  (SCM_FRAME_LOCAL): New define, replaces SCM_FRAME_VARIABLE.
  (SCM_FRAME_PROGRAM): Add cautionary commentary.

* libguile/frames.c: Adapt static asserts.
  (scm_frame_num_locals, scm_frame_local_ref, scm_frame_local_set_x):
  Adapt.  This means that frame-local-ref 0 now returns the procedure.

* libguile/vm-engine.c (ALLOC_FRAME, RESET_FRAME)
  (FRAME_LOCALS_COUNT, LOCAL_REF, LOCAL_SET, RETURN_VALUE_LIST): Adapt
  to change in fp.
  (LOCAL_ADDRESS): New helper.
  (POP_CONTINUATION_HOOK): Reimplement, taking the previous FP as an
  argument.
  (ABORT_CONTINUATION_HOOK): Reimplement, taking no arguments.
  (RETURN_ONE_VALUE): Reimplement.
  (RETURN_VALUE_LIST): Adapt to FP change.
  (halt, return-values, subr-call, foreign-call, prompt)
  (continuation-call, compose-continuation, call/cc, abort): Adapt to FP
  change, mostly via using LOCAL_ADDRESS, etc abstractions instead of
  using the raw frame pointer.

* libguile/control.c (reify_partial_continuation): Update for fp
  change.

* libguile/vm.c (vm_reinstate_partial_continuation): Adapt to removal of
  SCM_FRAME_UPPER_ADDRESS.

* module/system/vm/frame.scm (frame-call-representation): Adapt to
  frame-local-ref change.

* module/system/vm/trace.scm (print-return): Remove unused
  frame-num-locals call.
2013-11-17 22:07:44 +01:00
Andy Wingo
f8085163d6 Remove MVRA from VM frames
* libguile/_scm.h (SCM_OBJCODE_MINOR_VERSION): Bump for frame layout
  change.

* libguile/frames.c: Update some static checks.
  (scm_frame_num_locals, scm_frame_local_ref, scm_frame_local_set_x):
  Update to not skip over uninitialized frames, as that's not a thing
  any more.

* libguile/frames.h: Update to remove MVRA.  Woo!

* libguile/vm-engine.c (ALLOC_FRAME, RETURN_ONE_VALUE):
  (rtl_vm_engine): Update for 3 words per frame instead of 4.

* libguile/vm.c (vm_return_to_continuation): Likewise.

* module/language/cps/slot-allocation.scm (allocate-slots): 3 words per
  frame, not 4.

* module/system/vm/assembler.scm (*bytecode-minor-version*): Bump.  Also
  remove a couple of tc7's that aren't around any more.
2013-11-15 17:13:27 +01:00
Andy Wingo
840ec33422 Remove MVRA accessors in libguile
* libguile/vm.c (scm_i_vm_capture_stack): Remove MVRA argument, in
  preparation for removing MVRA from frames.
  (scm_i_capture_current_stack): Adapt to scm_i_vm_capture_stack
  change.
  (vm_reinstate_partial_continuation): Remove references to MVRA.

* libguile/vm.h (struct scm_vm_cont): Remove mvra member.

* libguile/vm-engine.c (call): Set MVRA to 0.  Will remove later.
  (return-values): Return to RA.
  (call/cc): Remove MVRA from capture call.

* libguile/frames.c:
* libguile/frames.h (SCM_FRAME_MV_RETURN_ADDRESS)
  (SCM_FRAME_RTL_MV_RETURN_ADDRESS, scm_frame_mv_return_address): Remove
  accessors.

* libguile/control.c (reify_partial_continuation): Adapt to
  scm_i_vm_capture_stack change.
2013-11-15 15:39:38 +01:00
Andy Wingo
1c33be992e Remove stack programs, objcode, and the old VM.
* 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.
2013-11-08 18:28:24 +01:00
Andy Wingo
581a4eb82b frame-instruction-pointer is absolute; rewrite (system vm coverage)
* libguile/frames.c (scm_frame_source): Instead of assuming that
  scm_frame_procedure is correct, use the IP to get the source.
  (scm_frame_instruction_pointer): Return an absolute value instead of
  assuming that slot 0 is correct.  (It isn't, when preparing for a tail
  call.)

* libguile/programs.h:
* libguile/programs.c (scm_find_source_for_addr): New internal helper.

* module/system/repl/debug.scm (print-registers): Readably print
  absolute instruction pointers.

* module/system/vm/coverage.scm: Complete rewrite to use absolute IP's.
  We can't assume that frame-procedure is cheap if it is correct, or
  correct if it is cheap.  Anyway using the address is better anyway.
  (coverage-data->lcov): Disable per-function info temporarily.
  (loaded-modules, module-procedures, closest-source-line)
  (closed-over-procedures): Remove these.  Instead of going from
  procedures to source info, now we go from ELF image to source info.

* module/system/vm/debug.scm (debug-context-length): New interface.

* module/system/vm/program.scm (source-for-addr): New internal helper.
2013-11-07 23:03:45 +01:00
Andy Wingo
72b82b0f21 scm_from_uintptr_t / scm_from_ptrdiff_t usage
* libguile/frames.c:
* libguile/programs.c: Use scm_from_ptrdiff_t and scm_from_uintptr_t
  where appropriate.
2013-11-07 18:11:00 +01:00
Andy Wingo
361d0de285 Stack traces skip RTL boot frames
* libguile/frames.c (frame-previous)
* libguile/stacks.c (make-stack): Skip RTL boot frames.
2013-10-17 23:25:01 +02:00
Andy Wingo
f8fb13ef8c better RTL debugging
* libguile/frames.c (scm_frame_source, scm_frame_instruction_pointer):
  Fix to work with RTL programs.

* module/system/vm/debug.scm (find-debug-context): Allow for the
  possibility of there being no ELF image.
  (find-program-debug-info, find-program-arities)
  (program-minimum-arity, find-program-docstring)
  (find-program-properties, find-source-for-addr)
  (find-program-die, find-program-sources): Don't bail if we couldn't
  get the debug context.

* module/system/vm/frame.scm (frame-next-source)
  (frame-call-representation): Allow RTL programs.

* module/system/vm/program.scm (program-arguments-alist): Placeholder
  implementation for RTL programs.
  (program-arguments-alists): Don't bail if we couldn't get the
  arities.
2013-10-04 19:55:12 +02:00
Andy Wingo
510ca12687 add new rtl vm
* 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.
2013-05-31 09:48:16 -04:00
Andy Wingo
ee6207d6f5 Merge remote-tracking branch 'origin/stable-2.0' 2012-05-11 14:31:17 +02:00
Andy Wingo
da874e5415 fix more assumptions that the frame-procedure is a procedure
* libguile/frames.c (scm_frame_source, scm_frame_previous):
* libguile/stacks.c (scm_make_stack):
* module/ice-9/boot-9.scm (exception-printers):
* module/system/vm/frame.scm (frame-call-representation): Fix more
  assumptions that frame-procedure is a program, or even a procedure.
2012-05-11 14:30:43 +02:00
Andy Wingo
968a9add65 Merge remote-tracking branch 'local-2.0/stable-2.0'
Conflicts:
	libguile/vm-engine.c
	libguile/vm-i-system.c
	libguile/vm.c
2012-05-10 13:02:11 +02:00
Andy Wingo
67b699cc77 refactor vm application of non-programs; boot continuation refactor
* libguile/frames.c (scm_frame_instruction_pointer):
* module/system/vm/frame.scm (frame-bindings):
  (frame-next-source, frame-call-representation): Fix a few locations
  that thought that the frame-procedure will always be a VM
  procedure.  This will not not be the case when traversing the stack of
  an application of a non-procedure.

* libguile/vm-i-system.c (call, tail-call, mv-call): Instead of
  special-casing structs and smobs at these call sites, just set up the
  stack, and jump to a generic apply loop if the proc is not a program.

* libguile/vm-engine.c: The generic apply loop is here.  Also, the boot
  program is now simply a boot continuation, and can handle any number
  of arguments.

* libguile/vm.c (make_boot_program): Update the code that makes the boot
  continuation.
2012-05-10 12:59:45 +02:00
Andy Wingo
252acfe8e7 Merge commit '3d51e57cfb'
Conflicts:
	libguile/foreign.c
	libguile/hashtab.c
	module/ice-9/psyntax-pp.scm
	module/language/tree-il/compile-glil.scm
2012-01-30 18:52:46 +01:00
Ludovic Courtès
0fc9040fa2 Parenthesize and type SCM_FRAME' macros; check layout of scm_vm_frame'.
* libguile/frames.c: Add compile-time assertions on the layout of
  `struct scm_vm_frame'.
  (RELOC): Parenthesize and type VAL.

* libguile/frames.h (SCM_FRAME_STRUCT): Write in terms of
  `SCM_FRAME_DATA_ADDRESS'.
  (SCM_FRAME_DATA_ADDRESS): Parenthesize and type FP.
  (SCM_FRAME_SET_DYNAMIC_LINK): Write in terms of
  `SCM_FRAME_DYNAMIC_LINK'.

* libguile/vm.c (RELOC): Parenthesize and type SCM_P.
2012-01-22 23:23:44 +01:00
Andy Wingo
0607ebbfcf locking for putc, puts
* libguile/ports.c (scm_putc, scm_puts):
* libguile/ports.h (scm_putc_unlocked, scm_puts_unlocked): Separate into
  _unlocked and locked variants.  Change all callers to use the
  _unlocked versions.
2011-11-08 00:55:05 +01:00
Andy Wingo
b2b33168b1 more care regarding SCM_PACK and SCM_UNPACK
* libguile/control.c (reify_partial_continuation):
* libguile/eval.c (RETURN_BOOT_CLOSURE):
* libguile/frames.c (scm_frame_num_locals, scm_frame_local_ref)
  (scm_frame_local_set_x)
* libguile/frames.h (SCM_FRAME_SET_RETURN_ADDRESS):
  (SCM_FRAME_SET_MV_RETURN_ADDRESS, SCM_FRAME_SET_DYNAMIC_LINK):
* libguile/goops.c (scm_class_of, scm_primitive_generic_generic)
  (scm_c_extend_primitive_generic, compute_getters_n_setters)
  (scm_sys_initialize_object):
* libguile/guardians.c (finalize_guarded):
* libguile/list.c (SCM_I_CONS):
* libguile/macros.c (scm_i_make_primitive_macro)
  (scm_make_syntax_transformer):
* libguile/memoize.c (MAKMEMO, SCM_MAKE_MEMOIZER)
  (SCM_MAKE_REST_MEMOIZER):
* libguile/modules.c (scm_module_reverse_lookup)
* libguile/print.c (iprin1):
* libguile/promises.c (scm_make_promise)
* libguile/srcprop.c (scm_make_srcprops):
* libguile/vectors.c (scm_c_vector_ref):
* libguile/vm-engine.c (vm_engine)
* libguile/vm-i-scheme.c (REL, add1, sub1):
* libguile/vm-i-system.c (new_frame, call_cc)
* libguile/weaks.h (SCM_WEAK_PAIR_WORD_DELETED_P): Be more careful about
  SCM_PACK / SCM_UNPACK.
2011-05-13 15:28:08 +02:00
Andy Wingo
9b709b0fe1 fix frame dynamic linkage in the face of partial continuation application
* libguile/vm-i-system.c (new-frame): Though it was appealing to set the
  dynamic link here on the incomplete frame, we no longer do that, for
  the reasons mentioned in the code.
  (call, mv-call): Adapt to set the frame's dynamic link.

* libguile/vm-engine.c (vm_engine): Don't set dynamic link here, even
  for boot program.

* libguile/frames.c (scm_frame_num_locals, scm_frame_local_ref)
  (scm_frame_local_set_x): Fix up not-yet-active frame detection.
2011-03-15 23:45:58 +01:00
Andy Wingo
423fca76e6 frame-source available in default environment
* libguile/frames.c (scm_frame_source): Don't call out to (system vm
  frames), as this routine is used when printing exceptions.  Make
  available in the default environment (ugh).

* module/system/vm/frame.scm: Remove frame-source definition and
  export.
2011-02-11 12:43:05 +01:00
Andy Wingo
3d27ef4bd3 fix a number of assumptions that a pointer could fit into a long
* libguile/debug.c:
* libguile/eval.c:
* libguile/frames.c:
* libguile/objcodes.c:
* libguile/print.c:
* libguile/programs.c:
* libguile/read.c:
* libguile/struct.c:
* libguile/vm.c: Fix a number of instances in which we assumed we could
  fit a pointer into a long.
2010-11-19 15:22:43 +01:00
Andy Wingo
542f975e60 add ,registers
* libguile/frames.h:
* libguile/frames.c (scm_frame_stack_pointer): New function.

* module/system/repl/debug.scm (print-registers): New function, prints
  out registers.

* module/system/repl/command.scm (registers): New debugging
  meta-command.
  (inspect): Not a stack-command, a normal meta-command.
2010-09-30 21:29:20 +02:00
Andy Wingo
2e30f3989c add scm_frame_address / frame-address
* libguile/frames.h:
* libguile/frames.c (scm_frame_address): New accessor, returns a frame's
  fp.
2010-09-23 13:19:49 +02:00
Andy Wingo
6f3b0cc29e tc7 tags for vm-related data
* libguile/tags.h (scm_tc7_frame, scm_tc7_objcode, scm_tc7_vm)
  (scm_tc7_vm_cont): Take more tc7s for VM-related data structures.

* libguile/evalext.c (scm_self_evaluating_p):
* libguile/gc.c (scm_i_tag_name):
* libguile/goops.c (scm_class_of, create_standard_classes):
* libguile/print.c (iprin1): Add cases for the new tc7s.

* libguile/frames.c:
* libguile/frames.h:
* libguile/objcodes.c:
* libguile/objcodes.h:
* libguile/vm.c:
* libguile/vm.h: Desmobify.

* libguile/vm.c (scm_vm_apply): Export to Scheme, because VM objects are
  no longer applicable.

* module/system/repl/command.scm (profile):
* module/system/vm/trace.scm (vm-trace):
* module/system/vm/vm.scm (vm-load): Call vm-apply to run a program in a
  VM instead of treating the VM as applicable.
2010-01-07 23:42:41 +01:00
Andy Wingo
a6029b97ea properly integrate vm bootstrapping into init.c
* libguile/Makefile.am (modinclude_HEADERS):
* libguile/vm-bootstrap.h: Remove vm-bootstrap.h.

* libguile/frames.c: No more vm-bootstrap.h.

* libguile/instructions.c (scm_init_instructions):
* libguile/objcodes.c (scm_init_objcodes):
* libguile/programs.c (scm_init_programs): No need to call
  scm_bootstrap_vm, init.c does that for us.

* libguile/vm.c (scm_bootstrap_vm): No need call e.g.
  scm_bootstrap_frames, init.c does that. Remove a twice-calling guard,
  should be unnecessary. Don't define the load-compiled subr here.

* libguile/load.c (scm_init_load): Define the load-compiled subr here.

* libguile/vm.h: Declare scm_bootstrap_vm here.

* libguile/init.c (scm_i_init_guile): Properly integrate VM
  bootstrapping into this file.
2010-01-07 23:42:41 +01:00
Andy Wingo
7abb7efd31 frames.c no longer exports frame-source -- frame.scm does so already
* libguile/frames.c (scm_frame_source): No longer exported to Scheme
  via init's call to scm_init_frames; in fact just calls the Scheme
  version. Perhaps this function is on its way out, though :)
2009-12-29 21:17:07 +01:00
Andy Wingo
1c5e812258 clean up (system vm frames), add locals command to debugger
* libguile/frames.c (scm_init_frames): No need to bootstrap the VM here,
  it should be already bootstrapped by init.c.
  (scm_bootstrap_frames): No need to register an extension, as
  scm_init_frames is called by init.c.

* module/system/vm/frame.scm: Don't load the scm_init_frames extension,
  as the primitives from frames.c are loaded by Guile's init.
  (frame-bindings): Change to return bindings, as can be accessed by the
  binding: accessors from program.scm.
  (frame-lookup-binding): Revive and make this one work with current
  code.
  (frame-binding-set!):
  (frame-binding-ref): Use the new frame-lookup-binding. Perhaps these
  should handle boxing and unboxing, though.
  (frame-source): New accessor, returns a source object.
  (frame-call-representation): Change to return a full list, as
  truncated-print can truncate for us.
  (frame-environment, frame-object-binding, frame-object-name): Update
  not to take an address, as the address is part of the frame.
  (frame-variable-exists?, frame-variable-ref, frame-variable-set!)
  (frame-local-variables, frame-program-name, print-frame)
  (print-frame-chain-as-backtrace, frame-file, frame-line-number)
  (make-frame-chain, bootstrap-frame?, frame-number, frame-address):
  Remove these outdated functions.

* module/system/vm/debug.scm (debugger-repl): Use
  frame-call-representation, and ~@y.
  (locals): New command, prints local variables in a frame.
2009-12-29 14:09:50 +01:00
Ludovic Courtès
3dbbe28dfd Don't use GCC zero-length arrays.
* libguile/frames.c, libguile/objcodes.c, libguile/programs.c,
  libguile/vm-engine.c, libguile/vm-i-system.c, libguile/vm.c: Use
  `SCM_C_OBJCODE_BASE ()' instead of accessing the `base' field of
  `struct scm_objcode'.

* libguile/objcodes.h (struct scm_objcode)[base]: Remove.
2009-12-15 01:01:16 +01:00
Andy Wingo
93dbc31b9a expose frame-previous, once again
* libguile/frames.h:
* libguile/frames.c (scm_frame_previous): Rename from scm_c_frame_prev,
  and expose to Scheme. Skip boot frames.

* libguile/stacks.c (stack_depth, narrow_stack, scm_make_stack)
  (scm_stack_ref): Adjust for scm_frame_previous skipping boot frames.
2009-12-15 00:22:02 +01:00
Andy Wingo
aa3f69519f replace frame implementation with VM frames
* libguile/stacks.h: Rework so that a stack doesn't copy information out
  of VM frames, it just holds onto a VM frame, along with the stack id
  and length. VM frames are now the only representation of frames in
  Guile.
  (scm_t_info_frame, SCM_FRAME_N_SLOTS, SCM_FRAME_REF, SCM_FRAME_NUMBER)
  (SCM_FRAME_FLAGS, SCM_FRAME_SOURCE, SCM_FRAME_PROC, SCM_FRAME_ARGS)
  (SCM_FRAME_PREV, SCM_FRAME_NEXT)
  (SCM_FRAMEF_VOID, SCM_FRAMEF_REAL, SCM_FRAMEF_PROC)
  (SCM_FRAMEF_EVAL_ARGS, SCM_FRAMEF_OVERFLOW)
  (SCM_FRAME_VOID_P, SCM_FRAME_REAL_P, SCM_FRAME_PROC_P)
  (SCM_FRAME_EVAL_ARGS_P, SCM_FRAME_OVERFLOW_P): Remove these macros
  corresponding to the old frame implementation.
  (scm_frame_p scm_frame_source, scm_frame_procedure)
  (scm_frame_arguments): These definitions are now in frames.h.
  (scm_last_stack_frame): Remove declaration of previously-removed
  constructor. Probably should re-instate it though.
  (scm_frame_number, scm_frame_previous, scm_frame_next)
  (scm_frame_real_p, scm_frame_procedure_p, scm_frame_evaluating_args_p)
  (scm_frame_overflow_p) : Remove these procedures corresponding to the
  old stack implementation.

* libguile/stacks.c: Update for new frames implementation.

* libguile/frames.h:
* libguile/frames.c: Rename functions operating on VM frames to have a
  scm_frame prefix, not scm_vm_frame -- because they really are the only
  frames we have. Rename corresponding Scheme functions too, from
  vm-frame-foo to frame-foo.

* libguile/deprecated.h: Remove scm_stack and scm_info_frame data types.

* libguile/vm.c (vm_dispatch_hook): Adapt to scm_c_make_frame name
  change.

* module/system/vm/frame.scm: No need to export functions provided
  frames.c now, as we load those procedures into the default environment
  now. Rename functions, and remove a couple of outdated, unused
  functions. The bottom half of this file is still bitrotten, though.

* libguile/backtrace.c: Rework to operate on the new frame
  representation. Also fix a bug displaying file names for compiled
  procedures.

* libguile/init.c: Load the VM much earlier, just because we can. Also
  it allows us to have frames.[ch] loaded in time for stacks to be
  initialized, so that scm_frame_arguments can do the right thing.
2009-12-03 14:42:51 +01:00
Ludovic Courtès
5c8cefe591 Remove remaining uses of discouraged constructs.
* libguile/frames.c, libguile/instructions.c, libguile/objcodes.c,
  libguile/programs.c, libguile/throw.c, libguile/vm-i-scheme.c,
  libguile/vm.c:  Replace uses of discouraged constructs by their
  current counterparts.
2009-11-28 15:11:31 +01:00
Andy Wingo
6c6a44390b runtime and debugging support for callee-parsed procedure args
* libguile/objcodes.h: Bump for metadata format change.

* libguile/frames.h: Rework so we don't frob the program's nargs, nlocs,
  etc at runtime. Instead we don't really know what's a local var, an
  argument, or an intermediate value. It's a little unfortunate, but
  this will allow for case-lambda, and eventually for good polymorphic
  generic dispatch; and the nlocs etc can be heuristically
  reconstructed. Such a reconstruction would be better done at the
  Scheme level, though.
  (SCM_FRAME_STACK_ADDRESS): New macro, the pointer to the base of the
  stack elements (not counting the program).
  (SCM_FRAME_UPPER_ADDRESS): Repurpose to be the address of the last
  element in the bookkeeping part of the stack -- i.e. to point to the
  return address.

* libguile/vm-engine.h:
* libguile/vm-i-system.c: Adapt to removal of stack_base. Though we
  still detect stack-smashing underflow, we don't do so as precisely as
  we did before, because now we only detect overwriting of the frame
  metadata.

* libguile/vm-engine.c (vm_engine): Remove the stack_base variable. It
  is unnecessary, and difficult to keep track of in the face of
  case-lambda. Also fix miscommented "ra" and "mvra" pushes. Push the
  vp->ip as the first ra...
* libguile/vm-i-system.c (halt): ...because here we can restore the
  vp->ip instead of setting ip to 0. Allows us to introspect ips all
  down the stack, including in recursive VM invocations.

* libguile/frames.h:
* libguile/frames.c (scm_vm_frame_stack): Removed, because it's getting
  more difficult to tell what's an argument and what's a temporary stack
  element.
  (scm_vm_frame_num_locals): New accessor.
  (scm_vm_frame_instruction_pointer): New accessor.
  (scm_vm_frame_arguments): Defer to an implementation in Scheme.
  (scm_vm_frame_num_locals scm_vm_frame_local_ref)
  (scm_vm_frame_local_set_x): Since we can get not-yet-active frames on
  the stack now, with our current calling convention, we have to add a
  heuristic here to jump over those frames -- because frames have
  pointers in them, not Scheme values.

* libguile/programs.h:
* libguile/programs.c (scm_program_arity): Remove, in favor of..
  (scm_program_arities): ...this, which a list of arities, in a new
  format, occupying a slot in the metadata.

* module/language/assembly/decompile-bytecode.scm (decode-load-program):
  Fix mv-call decompilation.

* module/system/vm/frame.scm (vm-frame-bindings, vm-frame-binding-ref)
  (vm-frame-binding-set!): New functions, to access bindings by name in
  a frame.
  (vm-frame-arguments): Function now implemented in Scheme. Commented
  fairly extensively.

* module/system/vm/program.scm (program-bindings-by-index)
  (program-bindings-for-ip): New accessors, parsing the program bindings
  metadata into something more useful.
  (program-arities, program-arguments): In a case-lambda world, we have
  to assume that programs can have multiple arities. But it's tough to
  detect this algorithmically; instead we're going to require that the
  program metadata include information about the arities, and the parts
  of the program that that metadata applies to.
  (program-lambda-list): New accessor.
  (write-program): Show multiple arities.

* module/language/glil/compile-assembly.scm (glil->assembly): Add
  "arities" to the state of the compiler, and add arities entries as
  appropriate.
2009-10-23 14:51:17 +02:00
Ludovic Courtès
7af531508c Merge branch 'master' into boehm-demers-weiser-gc
Conflicts:
	libguile/Makefile.am
	libguile/bytevectors.c
	libguile/gc-card.c
	libguile/gc-mark.c
	libguile/programs.c
	libguile/srcprop.c
	libguile/srfi-14.c
	libguile/symbols.c
	libguile/threads.c
	libguile/unif.c
	libguile/vm.c
2009-08-28 19:16:46 +02:00
Andy Wingo
2fb924f64f programs have their own tc7 now
* libguile/tags.h (scm_tc7_program):
* libguile/programs.h: Programs now have their own tc7 code. Fix up the
  macros appropriately.

* libguile/programs.c: Remove smobby bits, leaving marking, printing,
  and application for other parts of Guile.

* libguile/debug.c (scm_procedure_source):
* libguile/eval.c (scm_trampoline_0, scm_trampoline_1)
  (scm_trampoline_2): Add cases for tc7_program.
* libguile/eval.i.c (CEVAL, SCM_APPLY):
* libguile/evalext.c (scm_self_evaluating_p):
* libguile/gc-card.c (scm_i_sweep_card, scm_i_tag_name):
* libguile/gc-mark.c (1):
* libguile/print.c (iprin1):
* libguile/procs.c (scm_procedure_p, scm_thunk_p)
* libguile/vm-i-system.c (make-closure): Adapt to new procedure
  representation.

* libguile/procprop.c (scm_i_procedure_arity): Do the right thing for
  programs.
* test-suite/tests/procprop.test ("procedure-arity"): Arity test now
  succeeds.

* libguile/goops.c (scm_class_of): Programs now belong to the class
  <procedure>, not a smob class.

* libguile/vm.h (struct vm, struct vm_cont):
* libguile/vm-engine.c (vm_engine):
* libguile/frames.h (SCM_FRAME_BYTE_CAST, struct vm_frame):
* libguile/frames.c (scm_c_make_vm_frame): Fix usages of scm_byte_t,
  changing them to scm_t_uint8.
2009-08-20 18:52:51 +02:00
Andy Wingo
03e6c16596 reorder frame layout
* libguile/frames.h: Reorder the frame layout so the return address
  comes below the arguments.working
  (SCM_FRAME_SET_RETURN_ADDRESS, SCM_FRAME_SET_MV_RETURN_ADDRESS): New
  macros.

* libguile/frames.c (scm_vm_frame_arguments): Use the macros to access
  the arguments.

* libguile/vm-engine.c (vm_engine): Fix for new calling convention.

* libguile/vm-engine.h (INIT_FRAME): New macro. Does part of what
  NEW_FRAME used to do.

* libguile/vm-i-system.c (call, mv-call): Shuffle args up to make room
  for the stack, and adapt to new calling convention.
  (goto/args): Shuffling down is easier now.
  (return, return/args): Adapt to new frame layout.

* libguile/vm.c (vm_mark_stack): Adapt to new frame layout, and the
  possibility of there being crap on the stack.
  (really_make_boot_program): Remove extraneous comment.
2009-08-20 18:52:49 +02:00
Ludovic Courtès
fbb857a472 Merge branch 'master' into boehm-demers-weiser-gc
Conflicts:
	lib/Makefile.am
	libguile/Makefile.am
	libguile/frames.c
	libguile/gc-card.c
	libguile/gc-freelist.c
	libguile/gc-mark.c
	libguile/gc-segment.c
	libguile/gc_os_dep.c
	libguile/load.c
	libguile/macros.c
	libguile/objcodes.c
	libguile/programs.c
	libguile/strings.c
	libguile/vm.c
	m4/gnulib-cache.m4
	m4/gnulib-comp.m4
	m4/inline.m4
2009-08-18 00:06:45 +02:00
Andy Wingo
20d47c3915 remove "externals" from the vm
* libguile/frames.c (scm_frame_external_link): Removed.
* libguile/frames.h: No need to have the "external link" in the stack
  frame -- update macros to take the new situation into account.

* libguile/objcodes.h (struct scm_objcode): Rename the nexts field to
  "unused". In the future we can use it for nlocs, I think.
  (SCM_OBJCODE_NEXTS): removed.

* libguile/programs.h:
* libguile/programs.c (scm_make_program): Expect the third argument to
  be a vector of free variables, not a list of free variables.
  SCM_BOOL_F indicates no free variables, not SCM_EOL.
  (program_mark): Adapt.
  (scm_program_arity): No more nexts.
  (scm_program_free_vars): Replaces scm_program_externals.

* libguile/vm-engine.c (VM_CHECK_EXTERNAL)
  (vm_engine): No need for the "external" var.
* libguile/vm-engine.h (CACHE_PROGRAM): Update for SCM_PROGRAM_FREE_VARS
  instead of SCM_PROGRAM_EXTERNALS.
  (NEW_FRAME): Update for new frame size, and no need to cons up
  externals. Yay :)

* libguile/vm-i-loader.c (load-program): Update for scm_make_program.

* libguile/vm-i-system.c (external-ref, external-set): No more.
  (make-closure): No more.
  (goto/args): No need to re-cons externals here. Update for new stack
  frame size.
  (mv-call, return, return/values): Update for new frame size. No need
  to reinstate externals on return.

* libguile/vm.c (really_make_boot_program, scm_load_compiled_with_vm):
  Update for scm_make_program.
* module/language/objcode/spec.scm (objcode-env-externals): Treat '() as
  #f, for the externals. Need to clean this up later...
* module/system/vm/program.scm (arity:nexts): Remove. Rename
  program-external to program-free-vars.
2009-07-23 17:15:13 +02:00
Neil Jerram
53befeb700 Change Guile license to LGPLv3+
(Not quite finished, the following will be done tomorrow.
   module/srfi/*.scm
   module/rnrs/*.scm
   module/scripts/*.scm
   testsuite/*.scm
   guile-readline/*
)
2009-06-17 00:22:09 +01:00
Andy Wingo
560b9c256d adjust VM copyright notices to LGPL, use SCM_INTERNAL/API properly
* 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.
2009-05-26 22:23:44 +02:00
Ludovic Courtès
da8b47478e Avoid uses of deprecated forms in the VM code.
Reported by Daniel Kraft <d@domob.eu>.

* libguile/frames.c, libguile/vm.c: Include <stdlib.h>, use `size_t'
  instead of `scm_sizet'.

* libguile/objcodes.c, libguile/programs.c, libguile/vm-engine.c,
  libguile/vm-i-loader.c, libguile/vm-i-system.c: Use `scm_list_X ()'
  instead of the deprecated `SCM_LISTX ()'.
2009-04-05 20:15:11 +02:00
Andy Wingo
60ae5ca2a3 frame, program, objcode, etc inits use load-extension
* libguile/extensions.h: Define a scm_t_extension_init_func.

* libguile/frames.c:
* libguile/instructions.c:
* libguile/objcodes.c:
* libguile/programs.c:
* libguile/vm.c: Register extension init funcs. Should play nicer with a
  static Guile, in addition to working on Darwin with non-default
  installation prefixes without munging DYLD_LIBRARY_PATH.

* 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: Use load-extension.
2009-03-27 18:40:15 -07:00
Ludovic Courtès
3d94d862f8 Remove unneeded VM SMOB mark/free procedures.
* libguile/vm.c (vm_mark_stack, vm_cont_mark, vm_cont_free, vm_mark,
  vm_free): Remove.
  (scm_bootstrap_vm): Remove corresponding `scm_set_smob_mark ()' and
  `scm_set_smob_free ()' calls.

* libguile/frames.c (vm_frame_mark, vm_frame_free): Remove.
  (scm_bootstrap_frames): Remove `scm_set_smob_mark ()' and
  `scm_set_smob_free ()' calls.

* libguile/objcodes.c (objcode_mark): Remove.
  (scm_bootstrap_objcodes): Remove call to `scm_set_smob_mark ()'.

* libguile/programs.c (program_mark): Remove.
  (scm_bootstrap_programs): Remove call to `scm_set_smob_mark ()'.
2009-03-22 16:00:10 +01:00
Andy Wingo
aeeff258c6 non-srcdir build fixes
* 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.
2009-03-17 16:47:55 +01:00
Andy Wingo
2f9769b60c fix the ping-pong between evaluator and vm stacks in make-stack
* libguile/frames.c (vm_frame_print): Add a frame printer.

* libguile/stacks.c (stack_depth, read_frames): Only switch the VM stack
  for boot program dframes.

* libguile/vm-engine.c (VM_NAME): Push one debug frame per invocation,
  unconditionally. (If we push them at all, of course.)
2009-02-05 18:13:27 +01:00