version 1.13, 2007/05/28 09:43:34
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version 1.20, 2007/06/09 15:55:44
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Line 73
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Line 73
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\ c-variable forth-name c-name |
\ c-variable forth-name c-name |
\ c-constant forth-name c-name |
\ c-constant forth-name c-name |
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\ Todo: conversion between function pointers and xts (both directions) |
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\ taking an xt and turning it into a function pointer: |
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\ e.g., assume we have the xt of + and want to create a C function int |
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\ gforth_callback_plus(int, int), and then pass the pointer to that |
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\ function: |
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\ There should be Forth code like this: |
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\ ] + 0 (bye) |
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\ Assume that the start of this code is START |
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\ Now, there should be a C function: |
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\ int gforth_callback_plus(int p1, int p2) |
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\ { |
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\ Cell *sp = gforth_SP; |
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\ Float *fp = gforth_FP; |
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\ Float *fp = gforth_FP; |
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\ Address lp = gforth_LP; |
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\ sp -= 2; |
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\ sp[0] = p1; |
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\ sp[1] = p2; |
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\ gforth_engine(START, sp, rp, fp, lp); |
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\ sp += 1; |
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\ gforth_RP = rp; |
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\ gforth_SP = sp; |
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\ gforth_FP = fp; |
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\ gforth_LP = lp; |
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\ return sp[0]; |
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\ } |
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\ and the pointer to that function is the C function pointer for the XT of +. |
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\ Future problems: |
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\ how to combine the Forth code generation with inlining |
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\ START is not a constant across executions (when caching the C files) |
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\ Solution: make START a variable, and store into it on startup with dlsym |
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\ Syntax: |
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\ callback <rettype> <params> <paramtypes> -- <rettype> |
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\ data structures |
\ data structures |
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Line 99 struct
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Line 141 struct
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\ counted string: c-name |
\ counted string: c-name |
end-struct cff% |
end-struct cff% |
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variable c-source-file-id \ contains the source file id of the current batch |
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0 c-source-file-id ! |
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variable lib-handle-addr \ points to the library handle of the current batch. |
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\ the library handle is 0 if the current |
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\ batch is not yet compiled. |
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2variable lib-filename \ filename without extension |
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: .nb ( n -- ) |
: .nb ( n -- ) |
0 .r ; |
0 .r ; |
Line 120 end-struct cff%
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Line 168 end-struct cff%
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c c-addr1 c! |
c c-addr1 c! |
c-addr1 u1 1 /string ; |
c-addr1 u1 1 /string ; |
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\ linked list stuff (should go elsewhere) |
: s+ { addr1 u1 addr2 u2 -- addr u } |
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u1 u2 + allocate throw { addr } |
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addr1 addr u1 move |
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addr2 addr u1 + u2 move |
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addr u1 u2 + |
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; |
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: append { addr1 u1 addr2 u2 -- addr u } |
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addr1 u1 u2 + dup { u } resize throw { addr } |
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addr2 addr u1 + u2 move |
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addr u ; |
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hex |
\ linked list stuff (should go elsewhere) |
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struct |
struct |
cell% field list-next |
cell% field list-next |
Line 158 end-struct c-prefix%
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Line 216 end-struct c-prefix%
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variable c-prefix-lines 0 c-prefix-lines ! |
variable c-prefix-lines 0 c-prefix-lines ! |
variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end ! |
variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end ! |
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: save-c-prefix-line ( c-addr u -- ) |
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align here 0 , c-prefix-lines-end list-append ( c-addr u ) |
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longstring, ; |
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: \c ( "rest-of-line" -- ) |
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-1 parse save-c-prefix-line ; |
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: print-c-prefix-line ( node -- ) |
: print-c-prefix-line ( node -- ) |
dup c-prefix-chars swap c-prefix-count @ type cr ; |
dup c-prefix-chars swap c-prefix-count @ type cr ; |
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: print-c-prefix-lines ( -- ) |
: print-c-prefix-lines ( -- ) |
c-prefix-lines @ ['] print-c-prefix-line list-map ; |
c-prefix-lines @ ['] print-c-prefix-line list-map ; |
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\c #include "engine/libcc.h" |
: save-c-prefix-line ( c-addr u -- ) |
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c-source-file-id @ ?dup-if |
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>r 2dup r> write-line throw |
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then |
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align here 0 , c-prefix-lines-end list-append ( c-addr u ) |
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longstring, ; |
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: \c ( "rest-of-line" -- ) \ gforth backslash-c |
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\G One line of C declarations for the C interface |
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-1 parse save-c-prefix-line ; |
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s" #include <gforth/" version-string s+ s" /libcc.h>" append ( c-addr u ) |
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2dup save-c-prefix-line drop free throw |
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\ Types (for parsing) |
\ Types (for parsing) |
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Line 346 create gen-wrapped-types
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Line 409 create gen-wrapped-types
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endif |
endif |
.\" }\n" ; |
.\" }\n" ; |
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variable c-source-file-id \ contains the source file id of the current batch |
: tempdir ( -- c-addr u ) |
0 c-source-file-id ! |
s" TMPDIR" getenv dup 0= if |
variable lib-handle-addr \ points to the library handle of the current batch. |
2drop s" /tmp" |
\ the library handle is 0 if the current |
then ; |
\ batch is not yet compiled. |
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: gen-filename ( x -- c-addr u ) |
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\ generates a filename without extension for lib-handle-addr X |
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0 <<# ['] #s $10 base-execute #> |
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tempdir s" /gforth-c-" s+ 2swap append #>> ; |
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: init-c-source-file ( -- ) |
: init-c-source-file ( -- ) |
c-source-file-id @ 0= if |
c-source-file-id @ 0= if |
s" xxx.c" w/o create-file throw dup c-source-file-id ! |
here 0 , dup lib-handle-addr ! gen-filename 2dup lib-filename 2! |
['] print-c-prefix-lines swap outfile-execute |
s" .c" s+ 2dup w/o create-file throw dup c-source-file-id ! |
here 0 , lib-handle-addr ! |
['] print-c-prefix-lines swap outfile-execute |
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drop free throw |
endif ; |
endif ; |
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: c-source-file ( -- file-id ) |
: c-source-file ( -- file-id ) |
Line 365 variable lib-handle-addr \ points to the
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Line 433 variable lib-handle-addr \ points to the
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: compile-wrapper-function ( -- ) |
: compile-wrapper-function ( -- ) |
c-source-file close-file throw |
c-source-file close-file throw |
0 c-source-file-id ! |
0 c-source-file-id ! |
s" gcc -fPIC -shared -Wl,-soname,xxx.so.1 -Wl,-export_dynamic -o xxx.so.1 -O xxx.c" system |
s" gcc -fPIC -shared -Wl,-soname," lib-filename 2@ s+ |
$? abort" compiler generated error" |
s" .so.1 -Wl,-export_dynamic -o " append lib-filename 2@ append |
s" /home/anton/gforth/xxx.so.1" open-lib dup 0= abort" open-lib failed" |
[ s" .so.1 -O -I " s" includedir" getenv append s" " append ] sliteral |
( lib-handle ) lib-handle-addr @ ! ; |
append lib-filename 2@ append s" .c" append ( c-addr u ) |
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2dup system drop free throw |
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$? abort" compiler generated error" \ !! call dlerror |
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lib-filename 2@ s" .so.1" s+ |
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2dup open-lib dup 0= abort" open-lib failed" \ !! call dlerror |
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( lib-handle ) lib-handle-addr @ ! |
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2dup delete-file throw drop free throw |
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lib-filename 2@ s" .c" s+ 2dup delete-file throw drop free throw |
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lib-filename 2@ drop free throw 0 0 lib-filename 2! ; |
\ s" ar rcs xxx.a xxx.o" system |
\ s" ar rcs xxx.a xxx.o" system |
\ $? abort" ar generated error" ; |
\ $? abort" ar generated error" ; |
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Line 400 variable lib-handle-addr \ points to the
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Line 476 variable lib-handle-addr \ points to the
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does> ( ... -- ... ) |
does> ( ... -- ... ) |
@ call-c ; |
@ call-c ; |
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: c-function ( "forth-name" "c-name" "{libcc-type}" "--" "libcc-type" -- ) |
: c-function ( "forth-name" "c-name" "@{type@}" "--" "type" -- ) \ gforth |
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\G Define a Forth word @i{forth-name}. @i{Forth-name} has the |
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\G specified stack effect and calls the C function @code{c-name}. |
defer lastxt dup c-function-rt lastxt c-function-ft |
defer lastxt dup c-function-rt lastxt c-function-ft |
lastxt swap defer! ; |
lastxt swap defer! ; |
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s" Library not found" exception constant err-nolib |
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: library ( "name" "file" -- ) \ gforth |
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\G Dynamically links the library specified by @i{file}. Defines a |
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\G word @i{name} ( -- lib ) that starts the declaration of a |
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\G function from that library. |
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create parse-name open-lib dup 0= err-nolib and throw , |
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does> ( -- lib ) |
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@ ; |
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