summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--.gitignore3
-rw-r--r--Makefile21
-rw-r--r--include/asm-offsets.h2
-rw-r--r--include/linux/kbuild.h20
-rw-r--r--lib/asm-offsets.c25
-rwxr-xr-xtools/scripts/make-asm-offsets27
6 files changed, 96 insertions, 2 deletions
diff --git a/.gitignore b/.gitignore
index 67d2cd62c06..e71f6ac474d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,6 +40,9 @@
/errlog
/reloc_off
+/include/generated/
+/lib/asm-offsets.s
+
# stgit generated dirs
patches-*
.stgit-edit.txt
diff --git a/Makefile b/Makefile
index f9f83eb12f3..b50830a45ff 100644
--- a/Makefile
+++ b/Makefile
@@ -372,7 +372,8 @@ GEN_UBOOT = \
cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \
--start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
-Map u-boot.map -o u-boot
-$(obj)u-boot: depend $(SUBDIRS) $(OBJS) $(LIBBOARD) $(LIBS) $(LDSCRIPT) $(obj)u-boot.lds
+$(obj)u-boot: depend \
+ $(SUBDIRS) $(OBJS) $(LIBBOARD) $(LIBS) $(LDSCRIPT) $(obj)u-boot.lds
$(GEN_UBOOT)
ifeq ($(CONFIG_KALLSYMS),y)
smap=`$(call SYSTEM_MAP,u-boot) | \
@@ -426,7 +427,9 @@ updater:
# Explicitly make _depend in subdirs containing multiple targets to prevent
# parallel sub-makes creating .depend files simultaneously.
-depend dep: $(TIMESTAMP_FILE) $(VERSION_FILE) $(obj)include/autoconf.mk
+depend dep: $(TIMESTAMP_FILE) $(VERSION_FILE) \
+ $(obj)include/autoconf.mk \
+ $(obj)include/generated/generic-asm-offsets.h
for dir in $(SUBDIRS) $(CPUDIR) $(dir $(LDSCRIPT)) ; do \
$(MAKE) -C $$dir _depend ; done
@@ -473,6 +476,18 @@ $(obj)include/autoconf.mk: $(obj)include/config.h
sed -n -f tools/scripts/define2mk.sed > $@.tmp && \
mv $@.tmp $@
+$(obj)include/generated/generic-asm-offsets.h: $(obj)include/autoconf.mk.dep \
+ $(obj)lib/asm-offsets.s
+ @$(XECHO) Generating $@
+ tools/scripts/make-asm-offsets $(obj)lib/asm-offsets.s $@
+
+$(obj)lib/asm-offsets.s: $(obj)include/autoconf.mk.dep \
+ $(src)lib/asm-offsets.c
+ @mkdir -p $(obj)lib
+ $(CC) -DDO_DEPS_ONLY \
+ $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+ -o $@ $(src)lib/asm-offsets.c -c -S
+
#########################################################################
else # !config.mk
all $(obj)u-boot.hex $(obj)u-boot.srec $(obj)u-boot.bin \
@@ -1206,6 +1221,7 @@ clean:
$(obj)u-boot.lds \
$(obj)arch/blackfin/cpu/bootrom-asm-offsets.[chs]
@rm -f $(obj)include/bmp_logo.h
+ @rm -f $(obj)lib/asm-offsets.s
@rm -f $(obj)nand_spl/{u-boot.lds,u-boot-spl,u-boot-spl.map,System.map}
@rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl.map}
@rm -f $(ONENAND_BIN)
@@ -1229,6 +1245,7 @@ clobber: clean
@rm -f $(obj)tools/{env/crc32.c,inca-swap-bytes}
@rm -f $(obj)arch/powerpc/cpu/mpc824x/bedbug_603e.c
@rm -f $(obj)include/asm/proc $(obj)include/asm/arch $(obj)include/asm
+ @rm -fr $(obj)include/generated
@[ ! -d $(obj)nand_spl ] || find $(obj)nand_spl -name "*" -type l -print | xargs rm -f
@[ ! -d $(obj)onenand_ipl ] || find $(obj)onenand_ipl -name "*" -type l -print | xargs rm -f
diff --git a/include/asm-offsets.h b/include/asm-offsets.h
new file mode 100644
index 00000000000..ab28184054f
--- /dev/null
+++ b/include/asm-offsets.h
@@ -0,0 +1,2 @@
+#include <generated/generic-asm-offsets.h>
+/* #include <generated/asm-offsets.h> */
diff --git a/include/linux/kbuild.h b/include/linux/kbuild.h
new file mode 100644
index 00000000000..be763842c0b
--- /dev/null
+++ b/include/linux/kbuild.h
@@ -0,0 +1,20 @@
+/*
+ * Copied from Linux:
+ * commit 37487a56523d402e25650da16c337acf4cecd13d
+ * Author: Christoph Lameter <clameter@sgi.com>
+ */
+#ifndef __LINUX_KBUILD_H
+#define __LINUX_KBUILD_H
+
+#define DEFINE(sym, val) \
+ asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->" : : )
+
+#define OFFSET(sym, str, mem) \
+ DEFINE(sym, offsetof(struct str, mem))
+
+#define COMMENT(x) \
+ asm volatile("\n->#" x)
+
+#endif
diff --git a/lib/asm-offsets.c b/lib/asm-offsets.c
new file mode 100644
index 00000000000..4eb61747c4f
--- /dev/null
+++ b/lib/asm-offsets.c
@@ -0,0 +1,25 @@
+/*
+ * Adapted from Linux v2.6.36 kernel: arch/powerpc/kernel/asm-offsets.c
+ *
+ * This program is used to generate definitions needed by
+ * assembly language modules.
+ *
+ * We use the technique used in the OSF Mach kernel code:
+ * generate asm statements containing #defines,
+ * compile this file to assembler, and then extract the
+ * #defines from the assembly-language output.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <common.h>
+
+#include <linux/kbuild.h>
+
+int main(void)
+{
+ return 0;
+}
diff --git a/tools/scripts/make-asm-offsets b/tools/scripts/make-asm-offsets
new file mode 100755
index 00000000000..61c095f4264
--- /dev/null
+++ b/tools/scripts/make-asm-offsets
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# Adapted from Linux kernel's "Kbuild":
+# commit 1cdf25d704f7951d02a04064c97db547d6021872
+# Author: Christoph Lameter <clameter@sgi.com>
+
+mkdir -p $(dirname $2)
+
+# Default sed regexp - multiline due to syntax constraints
+SED_CMD="/^->/{s:->#\(.*\):/* \1 */:; \
+ s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 (\2) /* \3 */:; \
+ s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
+ s:->::; p;}"
+
+(set -e
+ echo "#ifndef __ASM_OFFSETS_H__"
+ echo "#define __ASM_OFFSETS_H__"
+ echo "/*"
+ echo " * DO NOT MODIFY."
+ echo " *"
+ echo " * This file was generated by $(basename $0)"
+ echo " *"
+ echo " */"
+ echo ""
+ sed -ne "${SED_CMD}" $1
+ echo ""
+ echo "#endif" ) > $2