Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement code to generate Makefile to build netbsd via intermediate relocatable 

object files.  Disabled for now.  Commit this for further experiments.

Kernel (netbsd) has been built as:

	netbsd: *.o
		ld -o netbsd *.o

Change this to:

	netbsd: *.ko
		ld -o netbsd *.ko
	acpica.ko: ${OBJS.acpica}
		ld -r acpica.ko ${OBJS.acpica}
	:

You can call *.ko as a module, but this is not only beneficial for loadable
module, but also localize related text/data.  Various options/flags/params
will be able to be per-ko.  Unnecessary symbols can be hidden.  Many ideas
will follow.
This commit is contained in:
uebayasi 2014-10-09 17:00:15 +00:00
parent 7a4efc30db
commit ae77717cc7
1 changed files with 70 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
usr.bin/config/mkmakefile.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: mkmakefile.c,v 1.17 2014/08/18 08:07:02 joerg Exp $ */ /* $NetBSD: mkmakefile.c,v 1.18 2014/10/09 17:00:15 uebayasi Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -68,6 +68,11 @@ static void emitdefs(FILE *);
static void emitfiles(FILE *, int, int); static void emitfiles(FILE *, int, int);
static void emitobjs(FILE *); static void emitobjs(FILE *);
static void emitallkobjs(FILE *);
static int emitallkobjscb(const char *, void *, void *);
static void emitattrkobjs(FILE *);
static int emitattrkobjscb(const char *, void *, void *);
static void emitkobjs(FILE *);
static void emitcfiles(FILE *); static void emitcfiles(FILE *);
static void emitsfiles(FILE *); static void emitsfiles(FILE *);
static void emitrules(FILE *); static void emitrules(FILE *);
@ -77,6 +82,9 @@ static void emitappmkoptions(FILE *);
static void emitsubs(FILE *, const char *, const char *, int); static void emitsubs(FILE *, const char *, const char *, int);
static int selectopt(const char *, void *); static int selectopt(const char *, void *);
/* Generate Makefile to build things per-attribute *.ko (a.k.a modular build). */
int usekobjs = 0; /* XXX */
int int
mkmakefile(void) mkmakefile(void)
{ {
@ -120,7 +128,7 @@ mkmakefile(void)
continue; continue;
} }
if (strcmp(line, "%OBJS\n") == 0) if (strcmp(line, "%OBJS\n") == 0)
fn = emitobjs; fn = usekobjs ? emitobjs : emitkobjs;
else if (strcmp(line, "%CFILES\n") == 0) else if (strcmp(line, "%CFILES\n") == 0)
fn = emitcfiles; fn = emitcfiles;
else if (strcmp(line, "%SFILES\n") == 0) else if (strcmp(line, "%SFILES\n") == 0)
@ -371,6 +379,66 @@ emitobjs(FILE *fp)
putc('\n', fp); putc('\n', fp);
} }
static void
emitkobjs(FILE *fp)
{
emitallkobjs(fp);
emitattrkobjs(fp);
}
static void
emitallkobjs(FILE *fp)
{
fputs("OBJS=", fp);
ht_enumerate(attrtab, emitallkobjscb, fp);
putc('\n', fp);
}
static int
emitallkobjscb(const char *name, void *v, void *arg)
{
struct attr *a = v;
FILE *fp = arg;
if (ht_lookup(selecttab, name) == NULL)
return 0;
if (TAILQ_EMPTY(&a->a_files))
return 0;
fprintf(fp, " %s.ko", name);
return 0;
}
static void
emitattrkobjs(FILE *fp)
{
extern struct hashtab *attrtab;
ht_enumerate(attrtab, emitattrkobjscb, fp);
}
static int
emitattrkobjscb(const char *name, void *v, void *arg)
{
struct attr *a = v;
struct files *fi;
FILE *fp = arg;
if (ht_lookup(selecttab, name) == NULL)
return 0;
if (TAILQ_EMPTY(&a->a_files))
return 0;
fputc('\n', fp);
fprintf(fp, "OBJS.%s=", name);
TAILQ_FOREACH(fi, &a->a_files, fi_anext) {
fprintf(fp, " %s.o", fi->fi_base);
}
fputc('\n', fp);
fprintf(fp, "%s.ko: ${OBJS.%s}\n", name, name);
fprintf(fp, "\t${LINK_O}\n");
return 0;
}
static void static void
emitcfiles(FILE *fp) emitcfiles(FILE *fp)
{ {