/usr/share/gauche-0.9/0.9.1/lib/gauche/cgen/precomp.scm is in gauche 0.9.1-5.
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;;; gauche.cgen.precomp - Precompile Scheme into C data
;;;
;;; Copyright (c) 2004-2010 Shiro Kawai <shiro@acm.org>
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;;
;;; 1. Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;;
;;; 2. Redistributions in binary form must reproduce the above copyright
;;; notice, this list of conditions and the following disclaimer in the
;;; documentation and/or other materials provided with the distribution.
;;;
;;; 3. Neither the name of the authors nor the names of its contributors
;;; may be used to endorse or promote products derived from this
;;; software without specific prior written permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
;;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
;;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
;;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
;;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
;;; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
;;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;;
;;; Precompiler takes compiled VM instruction array and dumps it
;;; as C code.
(define-module gauche.cgen.precomp
(use srfi-1)
(use srfi-13)
(use gauche.cgen)
(use gauche.cgen.stub)
(use gauche.vm.insn)
(use gauche.parameter)
(use gauche.sequence)
(use gauche.experimental.app)
(use gauche.experimental.ref)
(use gauche.experimental.lamb)
(use file.util)
(use util.match)
(use util.list)
(use util.toposort)
(use text.tr)
(export cgen-precompile cgen-precompile-multi))
(select-module gauche.cgen.precomp)
;;================================================================
;; Main Entry point
;;
;; The cgen-precompile function reads a scheme file "<foo>.scm",
;; compiles it and dumps the result as a C source "<foo>.c".
;; It may also generates "<foo>.sci", an interface definition file
;; which contains forms like define-module, use, export, etc.
;;
;; A generated C file contains an initialization function, named
;; Scm_Init_<foo> by default. Typically it is called by "extention
;; initializer", which is invoked when the DSO file is loaded by
;; dynamic-load.
;;
;; Example1:
;;
;; * An extention extention.so is built from extension.c,
;; foo.scm and bar.scm.
;;
;; * extension.c must contain a funciton Scm_Init_extension(),
;; which is the extention initializer. It is called from
;; (dynamic-load "extension")
;;
;; * By processing foo.scm and bar.scm, you'll get foo.c and
;; bar.c, each contain Scm_Init_foo() and Scm_Init_bar(),
;; respectively.
;;
;; * Scm_Init_extension() is responsible to call Scm_Init_foo()
;; and Scm_Init_bar().
;;
;; Sometimes sources consist of Scheme files only. In which case,
;; giving true value to ext-initializer keyword argument makes
;; the inialization function work as an extention initializer.
;;
;; Example2:
;;
;; * An extension extension.so is built from extention.scm.
;;
;; * Processing extension.scm with :ext-initializer #t
;; makes generated Scm_Init_extension() work as an extention
;; initializer.
;;
;; If there are more than one Scheme files and you want to make
;; one of its initializer funtion as an extention initializer,
;; give :sub-initializers argument to the 'main' source whose
;; initialization function becomes an extention initializer.
;;
;; Example3:
;;
;; * An extension extension.so is built from extension.scm,
;; foo.scm and bar.scm
;;
;; * foo.c and bar.c are to be created normally. Each has
;; Scm_Init_foo() and Scm_Init_bar(), respectively.
;;
;; * extension.c are to be created with :ext-initializer #t
;; and :sub-initializers '(Scm_Init_foo Scm_Init_bar).
;; The generated Scm_Init_extension() works as an extension
;; initializer, _and_ it calls Scm_Init_foo() and Scm_Init_bar().
;;
;; Keyword arguments:
;;
;; ext-initializer : See above.
;; sub-initializers : See above.
;;
;; out.c : Alternative name for C output #f to use the default
;; (path-swap-extension (sys-basename src) "c").
;; out.sci : Alternative name for SCI output. If #f, take the default
;; behavior which is:
;; - If the source's first form is define-module, use
;; (strip-prefix prefix (path-swap-extension src "sci"))
;; - Otherwise, do not produce SCI output.
;; If the source has define-module form and you don't want
;; to create SCI output, pass "/dev/null" to this argument.
;;
;; strip-prefix : Used to derive sci file path from the source file name.
;; This argument is ignored when out.sci is specified.
;; - If #f, the sci file is the same as src except its suffix is
;; substituted for ".sci".
;; - If #t, the sci file is the basename of src, with its suffx
;; substituted for ".sci".
;; - Otherwise, this argument must be a string. First src's
;; prefix is checked to match this argument; if they match,
;; the matching prefix is removed from SRC, then its extension
;; is substituted for ".sci". If SRC's suffix does not match,
;; it works just like #f is given to this argument.
;; This feature is useful to generate *.sci files mirroring
;; the source directory hierarchy.
;;
;; predef-syms : A list of strings, to insert #defines at the top of
;; generated C source.
;;
;; macros-to-keep : List of names of private macros that should be included
;; in the output. Usually private macros (macros bound to a variable
;; which isn't exported) are not included in the output. But sometimes
;; hygienic public macros expands to a call of private macros, and
;; gauche.cgen.precomp cannot detect such dependencies yet.
;; TO BE FIXED AFTER 0.9 RELEASE:
;; The keyword arguments marked 'TBF' in cgen-precomp and cgen-precomp-multi
;; should be fixed to the newer syntax ((:key var) init). We use older
;; syntax here just to make the source buildable by 0.8.14. After releasing
;; 0.9 they should be changed to use the newer syntax. See also the
;; pass1/extended-lambda for another temporary fix.
(define (cgen-precompile src
:key (out.c #f)
(out.sci #f)
(prefix :strip-prefix #f) ; TBF
(ext-initializer #f)
(dso :dso-name #f) ; TBF
(initializer-name #f)
(sub-initializers '())
(predef-syms '())
(macros-to-keep '()))
(let ([out.c (or out.c (path-swap-extension (sys-basename src) "c"))]
[out.sci (or out.sci
(and (check-first-form-is-define-module src)
(strip-prefix (path-swap-extension src "sci")
prefix)))])
;; see PARAMETERS section below
(parameterize ([cgen-current-unit (get-unit src out.c predef-syms
ext-initializer)]
[compile-module (make-module #f)]
[dso-name (cons
(or dso
(and ext-initializer
(basename-sans-extension out.c)))
initializer-name)]
[vm-eval-situation SCM_VM_COMPILING]
[private-macros-to-keep macros-to-keep])
(cond [out.sci
(make-directory* (sys-dirname out.sci))
(call-with-output-file out.sci
(lambda (p)
(display ";; generated automatically. DO NOT EDIT\n" p)
(display "#!no-fold-case\n" p)
(parameterize ([ext-module-file p])
(do-it src ext-initializer sub-initializers))))]
[else
(parameterize ([ext-module-file #f])
(do-it src ext-initializer sub-initializers))]))))
(define (do-it src ext-initializer sub-initializers)
(setup ext-initializer sub-initializers)
(with-input-from-file src
(cut emit-toplevel-executor
(reverse (port-fold compile-toplevel-form '() read))))
(finalize sub-initializers)
(cgen-emit-c (cgen-current-unit)))
;; Precompile multiple Scheme sources that are to be linked into
;; single DSO. Need to check dependency. The name of the first
;; source is used to derive DSO name.
(define (cgen-precompile-multi srcs
:key (ext-initializer #f)
(prefix :strip-prefix #f) ; TBF
(dso :dso-name #f) ; TBF
(predef-syms '())
(macros-to-keep '()))
(match srcs
[() #f]
[(main . subs)
(clean-output-files srcs prefix)
(dolist [src (order-files-by-dependency srcs)]
(let* ([out.c ($ xlate-cfilename
$ strip-prefix (path-swap-extension src "c") prefix)]
[initname (string-tr (path-sans-extension out.c) "-+." "___")])
(cgen-precompile src
:out.c out.c
:dso-name (or dso (basename-sans-extension main))
:predef-syms predef-syms
:strip-prefix prefix
:macros-to-keep macros-to-keep
:ext-initializer (and (equal? src main)
ext-initializer)
:initializer-name #`"Scm_Init_,initname")))]
))
;;================================================================
;; Parameters
;;
;; we compile things within an anonymous module to avoid interference.
(define compile-module (make-parameter #f))
;; keep the (supposed) name of the current module. (current-module) syntax
;; is compiled into (find-module ...) expression to lookup this name at
;; runtime.
(define compile-module-name (make-parameter #f))
;; A pair of the name of the generated DSO (w/o extension) and the name
;; of the initializer function.
(define dso-name (make-parameter #f))
;; keep the list of exported bindings (or #t if export-all)
(define compile-module-exports (make-parameter '()))
;; when we're compiling extension module (--ext-module=file), this parameter
;; keeps a port to the specified file. the file becomes a module definition
;; file, containing define-module and dynamic-load forms, as well as the
;; exported macros.
;; NB: we insert (dynamic-load ...) just after select-module in the ext-module
;; file, assuming the source file has standard layout.
(define ext-module-file (make-parameter #f))
;; list of private macros that should be included in the output.
;; (--keep-private-macro=name,name,...)
;; usually private macros (macros bound to a variable which isn't exported)
;; are discarded, but sometimes hygienic public macros expands to a call
;; of private macros. gencomp cannot detect such dependency yet, and
;; so they need to be explicitly listed for the time being.
(define private-macros-to-keep (make-parameter '()))
;;================================================================
;; Bridge to the internal stuff
;;
;; compatibility kludge
(define compile (with-module gauche.internal compile))
(define compile-toplevel-lambda
(with-module gauche.internal compile-toplevel-lambda))
(define %procedure-inliner
(with-module gauche.internal %procedure-inliner))
(define vm-code->list (with-module gauche.internal vm-code->list))
(define vm-eval-situation
(with-module gauche.internal vm-eval-situation))
(define global-eq?? (with-module gauche.internal global-eq??))
(define-constant SCM_VM_COMPILING 2) ;; must match with vm.h
;;================================================================
;; Utilities
;;
(define (get-unit src out.c predef-syms ext-init?)
(let* ([base (basename-sans-extension out.c)]
[safe-name (string-tr base "-+" "__")])
(make <cgen-stub-unit>
:name base :c-name-prefix safe-name
:preamble `(,#`"/* Generated automatically from ,|src|. DO NOT EDIT */")
:pre-decl (map (lambda (s) #`"#define ,s") predef-syms)
:init-prologue (format "~avoid Scm_Init_~a() { ScmModule *mod;"
(if ext-init? "SCM_EXTENSION_ENTRY " "")
safe-name)
)))
(define (strip-prefix path prefix)
(cond
[(not prefix) path]
[(eq? prefix #t) (sys-basename path)]
[else
(let1 pre (if (#/[\/\\]$/ prefix) prefix (string-append prefix "/"))
(if (string-prefix? pre path)
(string-drop path (string-length pre))
path))]))
(define (xlate-cfilename path)
(regexp-replace-all #/[\/\\]/ (sys-normalize-pathname path :canonicalize #t)
"--"))
(define (basename-sans-extension path)
(path-sans-extension (sys-basename path)))
;; Read the first form.
;; We don't read the entire content of the file, since it may contain
;; srfi-10 read-time constructor that we don't know about yet.
(define (first-form src) (with-input-from-file src read))
;; Check if the first form is define-module.
(define (check-first-form-is-define-module src)
(match (first-form src)
[('define-module . _) #t]
[else #f]))
;; Returns (<module> <srcname> (<depended> ...))
(define (get-module-dependency src)
(match (first-form src)
[('define-module modname . forms)
(list modname src
(filter-map (^(x)(match x [('use mod . _) mod] [_ #f])) forms))]
[_ #f]))
;; Sort the given list of source files so that each file only depends on
;; the files that appear later.
(define (order-files-by-dependency srcs)
(let* ([deps (filter-map get-module-dependency srcs)]
[sorted (topological-sort (map (^.[(n _ ns) (cons n ns)]) deps))]
[sorted-srcs (filter-map (^(s) (cond [(assq s deps) => cadr]
[else #f]))
sorted)]
[unsorted-srcs (lset-difference string=? srcs sorted-srcs)])
(append sorted-srcs unsorted-srcs)))
;; Removes *.sci files before start compiling so that the old file
;; won't interfere with compilation.
(define (clean-output-files scms prefix)
(dolist [s scms]
(when (equal? (path-extension s) "sci")
(error "source file list contains *.sci file:" s))
(sys-unlink (strip-prefix (path-swap-extension s "sci") prefix))))
(define (write-ext-module form)
(cond [(ext-module-file) => (^_ (write form _) (newline _))]))
(define (setup ext-init? subinits)
(cgen-decl "#include <gauche/code.h>")
(cgen-decl "#include <gauche/macro.h>") ; for MakeMacroTransformerOld. temporary.
(cond [(and ext-init? (ext-module-file))
=> (lambda (extm)
(cgen-decl "#include <gauche/extend.h>")
(let* ([extname ($ path-sans-extension
$ sys-basename $ port-name extm)]
[safe-extname (regexp-replace-all #/\W/ extname "_")])
(cgen-init #`"SCM_INIT_EXTENSION(,safe-extname);")))])
(dolist [init subinits]
(cgen-decl #`"extern void Scm_Init_,init(void);"))
(setup-compiler-environment (compile-module))
)
(define (finalize subinits)
(dolist [init subinits]
(cgen-init #`" Scm_Init_,init();")))
;;================================================================
;; Compiler stuff
;;
;; NOTE:
;; The code is compiled in the version of the compiler currently
;; running gencomp (host compiler). It may differ from the version
;; of the compiler we're compiling (target compiler), and it becomes
;; a problem if the two versions of compilers are using different
;; mappings between mnemonics and codes.
;;
;; When gencomp generates the C literals for the compiled code, it
;; uses the following mapping scheme.
;;
;; 1. use vm-code->list to extract mnemonics from the code
;; compiled by the host compiler.
;; 2. use vm-find-insn-info (in gauche.vm.insn module) to map
;; mnemonics to the target compiler's code.
;;
;; For this scheme to work, the following conditions should be satisfied.
;;
;; a. gauche.vm.insn should be the one generated from the same
;; vminsn.scm of the target compiler.
;; b. all the mnemonics that consists of the code generated by
;; the host compiler must exists in the target compiler's ISA.
;;
;; The condition b. implies that if you want to rename an instruction,
;; you have to take three steps:
;; (1) add a new instruction of the desired name, compile the
;; target compiler #1. (This version of the compiled target
;; compiler still uses old instruction).
;; (2) compile the target compiler again, using the target compiler #1,
;; to generate the target compiler #2. (This version of
;; the target compiler uses the new instruction).
;; (3) remove the old instruction.
;;
;; predicates to match the global identifiers that are not redefined
(define-syntax define-global-pred
(syntax-rules ()
[(_ name sym)
(define name (global-eq?? 'sym 'gauche compile-module))]))
(define-global-pred =define-module? define-module)
(define-global-pred =select-module? select-module)
(define-global-pred =use? use)
(define-global-pred =export? export)
(define-global-pred =export-all? export-all)
(define-global-pred =export-if-defined? export-if-defined)
(define-global-pred =provide? provide)
(define-global-pred =lambda? lambda)
(define-global-pred =declare? declare)
;; compile FORM, and conses the toplevel code (something to be
;; executed at toplevel).
(define (compile-toplevel-form form seed)
(guard (e
[(<error> e)
(format (current-error-port) "Error in compiling ~s\n" form)
(raise e)])
(match form
;; Module related stuff
[((? =define-module?) mod . body)
(write-ext-module form)
(parameterize ([compile-module-name mod])
(fold compile-toplevel-form seed body))]
[((? =select-module?) mod)
(write-ext-module form)
(match (dso-name)
[(name . #f)
(write-ext-module `(dynamic-load ,name))]
[(name . initfn)
(write-ext-module `(dynamic-load ,name :init-function ,initfn))]
[_ #f])
(let1 sym (cgen-literal mod)
(cgen-init
(format " mod = Scm_FindModule(SCM_SYMBOL(~a),\
SCM_FIND_MODULE_CREATE);"
(cgen-cexpr sym))
;; force the current module to be mod
" Scm_SelectModule(mod);"))
(compile-module-name mod)
seed]
[((? =use?) mod)
(eval `(use ,mod) (compile-module)) seed]
[((? =export?) . syms)
(when (list? (compile-module-exports))
(compile-module-exports
(lset-union eq? syms (compile-module-exports))))
(eval `(export ,@syms) (compile-module)) seed]
[((? =export-all?)) (compile-module-exports #t)]
[((? =export-if-defined?) . _) (write-ext-module form) seed]
[((? =provide?) arg) (write-ext-module form) seed]
;; TODO - we need more general framework supporting various declarations.
;; for the time being, this ad-hoc solution suffice our needs.
[((? =declare?) decls ...)
(for-each (^.[('keep-private-macro . macros)
(private-macros-to-keep (append (private-macros-to-keep)
macros))]
[other (error "Unknown declaration:" other)])
decls)
seed]
;; Finally, ordinary expressions.
[else
(let1 compiled-code (compile form (compile-module))
;; We exclude a compiled code with only CONSTU-RET, which appears
;; as the result of macro expansion sometimes.
(if (toplevel-constu-ret-code? compiled-code)
seed
(cons (cgen-literal compiled-code) seed)))]
)))
;; check to see the compiled code only contains CONSTU-RET insn.
(define (toplevel-constu-ret-code? compiled-code)
(and (eq? (~ compiled-code'name) '%toplevel)
(= (~ compiled-code'size) 1)
(let1 code (vm-code->list compiled-code)
(null? (cdr code))
(eq? (caar code) 'CONSTU-RET))))
;; given list of toplevel compiled codes, generate code in init
;; that calls them. This is assumed to be the last procedure before
;; calling cgen-emit.
(define (emit-toplevel-executor topcodes)
(cgen-body "static ScmCompiledCode *toplevels[] = {")
(dolist (t topcodes)
(cgen-body (format " SCM_COMPILED_CODE(~a)," (cgen-cexpr t))))
(cgen-body " NULL /*termination*/" "};")
(cgen-init (format " Scm_VMExecuteToplevels(toplevels);"))
)
;;================================================================
;; Special form handlers
;;
;; Some special forms must be handled differently from the ordinary
;; compilation. We implement it by replacing those special forms
;; for tailored handlers within the compiler environment.
;;
;; NB: We used to recognize those forms literally within
;; compile-toplevel-form. It failed to work, however, when these
;; forms are generated as the result of macro expansion.
;; The current approach still has an issue when the compiled source
;; overrides these special forms. Such sources should be very unusual,
;; so we don't support them for the time being.
(define *special-handlers*
'((define-macro (current-module)
`(find-module ',(with-module gauche.cgen.precomp
(compile-module-name))))
(define-macro (inline-stub . forms)
(for-each (lambda (s)
((with-module gauche.cgen.stub cgen-stub-parse-form)
(unwrap-syntax s)))
forms)
(undefined))
(define-macro (define . f)
((with-module gauche.cgen.precomp handle-define) f))
(define-macro (define-constant . f)
((with-module gauche.cgen.precomp handle-define-constant) f))
(define-macro (define-syntax . f)
((with-module gauche.cgen.precomp handle-define-syntax) f))
(define-macro (define-macro . f)
((with-module gauche.cgen.precomp handle-define-macro) f))
))
(define (setup-compiler-environment mod)
(dolist [form *special-handlers*]
(eval form mod)))
;; For the time being, we only compile the legacy macros into C file.
;; R5RS macros are put in ext-module file as is.
(define (handle-define-macro form)
(match form
[((name . formals) . body)
(when (or (symbol-exported? name)
(memq name (private-macros-to-keep)))
(let* ([body-closure (compile-toplevel-lambda form name formals
body (compile-module))]
[code (cgen-literal (closure-code body-closure))]
[var (cgen-literal name)])
(cgen-init
(format " Scm_Define(mod, SCM_SYMBOL(~a), \
Scm_MakeMacroTransformerOld(SCM_SYMBOL(~a),\
SCM_PROCEDURE(Scm_MakeClosure(~a, NULL)))); /* ~s */"
(cgen-cexpr var) (cgen-cexpr var)
(cgen-cexpr code) (cgen-safe-comment name)))))]
[(name . expr)
(when (symbol-exported? name)
(write-ext-module `(define-macro . ,form)))]
[_ #f])
(cons '(with-module gauche define-macro) form))
(define (handle-define-syntax form)
(match form
[(name . _)
(when (or (symbol-exported? name)
(memq name (private-macros-to-keep)))
(write-ext-module `(define-syntax . ,form)))]
[_ #f])
(cons '(with-module gauche define-syntax) form))
(define (handle-define form)
(match form
[((name . args) . body)
(handle-define `(,name (lambda ,args ,@body)))]
[((? symbol? name) ((? =lambda?) args . body))
(let* ([closure
(compile-toplevel-lambda form name args body (compile-module))]
[code (cgen-literal (closure-code closure))]
[var (cgen-literal name)])
(cgen-init
(format " Scm_Define(mod, SCM_SYMBOL(~a), Scm_MakeClosure(~a, NULL)); /* ~s */"
(cgen-cexpr var) (cgen-cexpr code) (cgen-safe-comment name))))
(undefined)]
[_
(cons '(with-module gauche define) form)]))
(define (handle-define-constant form)
(match form
[((? symbol? name) expr)
(eval `((with-module gauche define-constant) ,@form) (compile-module))]
[_ #f])
(cons '(with-module gauche define-constant) form))
;; check to see if the symbol is exported
(define (symbol-exported? sym)
(or (eq? (compile-module-exports) #t)
(memq sym (compile-module-exports))))
;;================================================================
;; Compiler-specific literal handling definitions
;;
(define-cgen-literal <cgen-scheme-code> <compiled-code>
((code-name :init-keyword :code-name)
(code-vector-c-name :init-keyword :code-vector-c-name)
(literals :init-keyword :literals)
)
(make (value)
(let* ((cv (vm-code->list value))
(lv (extract-literals cv))
(cvn (allocate-code-vector cv lv (~ value'full-name)))
(code-name (cgen-literal (~ value'name)))
(arg-info (cgen-literal (~ value'arg-info)))
(inliner (check-packed-inliner value))
)
(define (init-thunk)
(format #t " SCM_COMPILED_CODE_CONST_INITIALIZER( /* ~a */\n"
(cgen-safe-comment (~ value'name)))
(format #t " (ScmWord*)(~a), ~a,\n"
cvn (length cv))
(format #t " ~a, ~a, ~a, ~a, SCM_NIL, ~a,\n"
(~ value'max-stack)
(~ value'required-args)
(~ value'optional-args)
(if (cgen-literal-static? code-name)
(cgen-cexpr code-name)
"SCM_FALSE")
(cgen-cexpr arg-info))
(format #t " ~a, ~a)"
(cgen-cexpr (cgen-literal (~ value'parent)))
(if inliner
(cgen-cexpr inliner)
"SCM_FALSE")))
(make <cgen-scheme-code> :value value
:c-name (cgen-allocate-static-datum 'runtime 'ScmCompiledCode
init-thunk)
:code-vector-c-name cvn
:code-name code-name
:literals lv)))
(init (self)
(unless (cgen-literal-static? [~ self'code-name])
(print " SCM_COMPILED_CODE("[~ self'c-name]")->name = "
(cgen-cexpr [~ self'code-name])";"
"/* "(cgen-safe-comment [~ self'value'full-name])" */"))
(fill-code self))
(static (self) #t)
)
;; Returns a list of the same length of CODE, which includes the
;; <cgen-literal>s corresponding to the literal values in CODE.
;; #f is filled in the places that don't have corresponding litaral value.
(define (extract-literals code)
(let loop ((code code)
(lits '()))
(if (null? code)
(reverse lits)
(let* ([insn (car code)]
[info (vm-find-insn-info (car insn))])
(case (~ info'operand-type)
[(none) (loop (cdr code) (cons #f lits))]
[(addr) (loop (cddr code) (list* #f #f lits))]
[(code codes) (loop (cddr code)
(list* (cgen-literal (cadr code)) #f lits))]
[(obj) (loop (cddr code)
(list* (cgen-literal (cadr code)) #f lits))]
[(obj+addr)
(loop (cdddr code)
(list* #f (cgen-literal (cadr code)) #f lits))]
)))))
(define (allocate-code-vector cv lv full-name)
(define (alloc-word initval)
(cgen-allocate-static-datum 'runtime 'ScmWord initval))
(define (loop cv lv count first-cexpr)
(if (null? cv)
first-cexpr
(let* ([insn (car cv)]
[info (vm-find-insn-info (car insn))]
[insnval (vm-build-insn insn)]
[name-info (if first-cexpr
""
(format "/* ~a */\n " (cgen-safe-comment full-name)))]
[insn-cexpr
(alloc-word
;; We emit it as signed integer so that 64bit machine
;; correctly handles negative parameter value.
(if (> insnval #x80000000)
(format "~a-0x~8,'0x /* ~3d ~a */"
name-info (- #x100000000 insnval) count
(cgen-safe-comment insn))
(format "~a0x~8,'0x /* ~3d ~a */"
name-info insnval count
(cgen-safe-comment insn))))]
[first-cexpr (or first-cexpr insn-cexpr)])
(case (~ info'operand-type)
[(none)
(loop (cdr cv) (cdr lv) (+ count 1) first-cexpr)]
[(addr)
(alloc-word
(format "SCM_WORD((ScmWord*)~a + ~d)"
first-cexpr (cadr cv)))
(loop (cddr cv) (cddr lv) (+ count 2) first-cexpr)]
[(obj code codes)
(alloc-word
(if (cgen-literal-static? (cadr lv))
(format "SCM_WORD(~a) /* ~a */"
(cgen-cexpr (cadr lv))
(cgen-safe-comment (write-to-string (cadr cv))))
(format "SCM_WORD(SCM_UNDEFINED) /* ~a */"
(cgen-safe-comment (write-to-string (cadr cv))))))
(loop (cddr cv) (cddr lv) (+ count 2) first-cexpr)]
[(obj+addr)
(alloc-word
(if (cgen-literal-static? (cadr lv))
(format "SCM_WORD(~a) /* ~a */"
(cgen-cexpr (cadr lv))
(cgen-safe-comment (write-to-string (cadr cv))))
(format "SCM_WORD(SCM_UNDEFINED) /* ~a */"
(cgen-safe-comment (write-to-string (cadr cv))))))
(alloc-word
(format "SCM_WORD((ScmWord*)~a + ~d) /* ~3d */"
first-cexpr (caddr cv) (caddr cv)))
(loop (cdddr cv) (cdddr lv) (+ count 3) first-cexpr)]
))))
(loop cv lv 0 #f))
(define (fill-code code)
(let ([cvn (~ code'code-vector-c-name)]
[lv (~ code'literals)])
(for-each-with-index
(lambda (index lit)
(when (and lit (not (cgen-literal-static? lit)))
(format #t " ((ScmWord*)~a)[~a] = SCM_WORD(~a);\n"
cvn index (cgen-cexpr lit))))
lv)
))
;; If the compiled-code has packed IForm for inliner, translate it for
;; the target VM insns and returns the packed IForm.
(define (check-packed-inliner compiled-code)
(let1 il (~ compiled-code'intermediate-form)
(and (vector? il)
(let* ([insns (class-slot-ref <vm-insn-info> 'all-insns)]
[packed ((with-module gauche.internal translate-packed-iform)
il insns)])
(cgen-literal packed)))))
;; NB: this doesn't yet handle identifiers that are inserted by hygienic
;; macro (so that they have different module than the current one).
(define-cgen-literal <cgen-scheme-identifier> <identifier>
((id-name :init-keyword :id-name)
(mod-name :init-keyword :mod-name))
(make (value)
(unless (null? (~ value'env))
(error "identifier with compiler environment can't be compiled" value))
(make <cgen-scheme-identifier> :value value
:c-name (cgen-allocate-static-datum)
:id-name (cgen-literal (~ value'name))
:mod-name (and-let* ([modnam (module-name-fix (~ value'module))])
(cgen-literal modnam))))
(init (self)
(let ([name (cgen-cexpr (~ self'id-name))]
[cname (~ self'c-name)])
(or (and-let* ([modnam (~ self'mod-name)])
(print " "cname" = Scm_MakeIdentifier(SCM_SYMBOL("name"), "
"Scm_FindModule(SCM_SYMBOL("(cgen-cexpr modnam)"), SCM_FIND_MODULE_CREATE),"
"SCM_NIL);"))
(print " "cname" = Scm_MakeIdentifier(SCM_SYMBOL("name"), mod, SCM_NIL);"))))
(static (self) #f)
)
;; NB: for compatibility, we check modnam vs '# to find out anonymous
;; modules. (By 0.8.14 anonymous modules are named as |#|.)
(define (module-name-fix module)
(and-let* ([nam (module-name module)]
[ (not (eq? nam '|#|)) ]) ;|# <- to fool emacs
nam))
;; NB: for now, we ignore macros (we assume they are only used within
;; the source file).
(define-cgen-literal <cgen-scheme-macro> <macro>
()
(make (value)
(make <cgen-scheme-macro> :value value :c-name #f))
)
;; For generic functions, we initialize it at runtime.
(define-cgen-literal <cgen-scheme-generic> <generic>
((gf-name :init-keyword :gf-name))
(make (value)
(make <cgen-scheme-generic>
:value value
:c-name (cgen-allocate-static-datum)
:gf-name (cgen-literal (ref value 'name))))
(init (self)
(format #t " ~a = Scm_SymbolValue(mod, SCM_SYMBOL(~a));\n"
(~ self'c-name) (~ self'gf-name'c-name)))
(static (self) #f)
)
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