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Revision as of 15:45, 31 July 2006 (edit) Massemanet (Talk | contribs) ← Previous diff		Revision as of 15:47, 31 July 2006 (edit) (undo) Massemanet (Talk | contribs) Next diff →
Line 1:		Line 1:
-	0) run configure	+	0) run configure
-	1) add your bifs to erts/emulator/beam/bif.tab	+	1) add your bifs to erts/emulator/beam/bif.tab
	e.g.		e.g.
Line 7:		Line 7:
	bif re:compile/1		bif re:compile/1
-	2) create a C file	+	2) create a C file
	e.g.		e.g.
	erts/emulator/beam/erl_bif_re.c		erts/emulator/beam/erl_bif_re.c
-	3) add your C file to erts/emulator/<arch>/Makefile	+	3) add your C file to erts/emulator/<arch>/Makefile
	e.g.		e.g.
	RUN_OBJS = $(OBJDIR)/erl_bif_re.o \		RUN_OBJS = $(OBJDIR)/erl_bif_re.o \
-	4) implement your bifs by stealing bits from existing erl_bif_*.c files	+	4) implement your bifs by stealing bits from existing erl_bif_*.c files
	e.g.		e.g.
	BIF_RETTYPE re_grep_2(BIF_ALIST_2){		BIF_RETTYPE re_grep_2(BIF_ALIST_2){
-	Eterm result;	+	Eterm result;
-	result = magic_function();	+	result = magic_function();
-	BIF_RET(result);	+	BIF_RET(result);
	}		}
-	5) run make; make install	+	5) run make; make install
-	steps 0-3 need only be done once.	+	steps 0-3 need only be done once.
-	note that if you add	+	note that if you add
	bif re:grep/2		bif re:grep/2
-	to bif.tab	+
-	there should be a erl_bif_re.c	+	to bif.tab there should be a
-	that implements	+	erl_bif_re.c
		+
		+	that implements
	BIF_RETTYPE re_grep_2(BIF_ALIST_2);		BIF_RETTYPE re_grep_2(BIF_ALIST_2);

---

Revision as of 15:47, 31 July 2006

0) run configure

1) add your bifs to erts/emulator/beam/bif.tab

e.g. bif re:grep/2 bif re:compile/1

2) create a C file

e.g. erts/emulator/beam/erl_bif_re.c

3) add your C file to erts/emulator/<arch>/Makefile

e.g. RUN_OBJS = $(OBJDIR)/erl_bif_re.o \

4) implement your bifs by stealing bits from existing erl_bif_*.c files

e.g. BIF_RETTYPE re_grep_2(BIF_ALIST_2){ Eterm result; result = magic_function(); BIF_RET(result); }

5) run make; make install

steps 0-3 need only be done once.

note that if you add bif re:grep/2

to bif.tab there should be a erl_bif_re.c

that implements BIF_RETTYPE re_grep_2(BIF_ALIST_2);