u-boot/tools/scripts/make-asm-offsets

#!/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
include/asm-offsets.h: automatically generate assembler constants A recurrent issue is that certain C level constructs like sizeof() or offsetof() cannot be used in assembler files, which is inconvenient when such constructs are used in the definition of macro names etc. To avoid duplication of such definitions (and thus another cause of problems), we adapt the Linux way to automatically generate the respective definitions from the respective C header files. In Linux, this is implemented in include/linux/kbuild.h, Kbuild, and arch//kernel/asm-offsets.c; we adapt the code from the Linux v2.6.36 kernel tree. We also copy the concept of the include/generated/ directory which can be used to hold other automatically generated files as well. We start with an architecture-independent lib/asm-offsets.c which generates include/generated/generic-asm-offsets.h (included by include/asm-offsets.h, which is what will be referred to in the actual source code). Later this may be extended by architecture-specific arch//lib/asm-offsets.c files that will generate a include/generated/asm-offsets.h. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Kumar Gala <galak@kernel.crashing.org> 2010-10-25 22:08:35 +00:00			`#!/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 */:; \`
make-asm-offsets: fix sed script When copying the "sed" script to generate the asm-offsets.h file from the Linux Kbuild script into the make-asm-offsets file I missed the fact that the former runs in a "make" context and thus uses double "$$" to escape a single "$", while the latter is a shell script, where this must not be done. Unfortunately the problem did not show up during the initial tests on Power Architecture systems, but on ARM the generated asm-offsets.h was not correct. Signed-off-by: Wolfgang Denk <wd@denx.de> Tested-by: Heiko Schocher <hs@denx.de> Tested-by: Ben Gardiner <bengardiner@nanometrics.ca> 2010-10-27 06:31:42 +00:00			`s:^->\([^ ]\) [\$#]\([-0-9]\) \(.\):#define \1 (\2) /* \3 */:; \`
			`s:^->\([^ ]\) [\$#]\([^ ]\) \(.\):#define \1 \2 /* \3 */:; \`
include/asm-offsets.h: automatically generate assembler constants A recurrent issue is that certain C level constructs like sizeof() or offsetof() cannot be used in assembler files, which is inconvenient when such constructs are used in the definition of macro names etc. To avoid duplication of such definitions (and thus another cause of problems), we adapt the Linux way to automatically generate the respective definitions from the respective C header files. In Linux, this is implemented in include/linux/kbuild.h, Kbuild, and arch//kernel/asm-offsets.c; we adapt the code from the Linux v2.6.36 kernel tree. We also copy the concept of the include/generated/ directory which can be used to hold other automatically generated files as well. We start with an architecture-independent lib/asm-offsets.c which generates include/generated/generic-asm-offsets.h (included by include/asm-offsets.h, which is what will be referred to in the actual source code). Later this may be extended by architecture-specific arch//lib/asm-offsets.c files that will generate a include/generated/asm-offsets.h. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Kumar Gala <galak@kernel.crashing.org> 2010-10-25 22:08:35 +00:00			`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 $0)"`
			`echo " *"`
			`echo " */"`
			`echo ""`
Coding Style cleanup: remove trailing white space Signed-off-by: Wolfgang Denk <wd@denx.de> 2013-10-07 11:07:26 +00:00			`sed -ne "${SED_CMD}" $1`
include/asm-offsets.h: automatically generate assembler constants A recurrent issue is that certain C level constructs like sizeof() or offsetof() cannot be used in assembler files, which is inconvenient when such constructs are used in the definition of macro names etc. To avoid duplication of such definitions (and thus another cause of problems), we adapt the Linux way to automatically generate the respective definitions from the respective C header files. In Linux, this is implemented in include/linux/kbuild.h, Kbuild, and arch//kernel/asm-offsets.c; we adapt the code from the Linux v2.6.36 kernel tree. We also copy the concept of the include/generated/ directory which can be used to hold other automatically generated files as well. We start with an architecture-independent lib/asm-offsets.c which generates include/generated/generic-asm-offsets.h (included by include/asm-offsets.h, which is what will be referred to in the actual source code). Later this may be extended by architecture-specific arch//lib/asm-offsets.c files that will generate a include/generated/asm-offsets.h. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Kumar Gala <galak@kernel.crashing.org> 2010-10-25 22:08:35 +00:00			`echo ""`
			`echo "#endif" ) > $2`