blob: 431f7ca2404cb2cf5bbc5b40050f032a8986888a [file] [log] [blame]
Sam Ravnborg86feeaa2005-09-09 19:28:28 +02001#
2# Kbuild for top-level directory of the kernel
3# This file takes care of the following:
Christoph Lameter1cdf25d2008-04-28 02:12:44 -07004# 1) Generate bounds.h
5# 2) Generate asm-offsets.h (may need bounds.h)
6# 3) Check for missing system calls
Sam Ravnborg86feeaa2005-09-09 19:28:28 +02007
8#####
Christoph Lameter1cdf25d2008-04-28 02:12:44 -07009# 1) Generate bounds.h
10
Sam Ravnborg01fc0ac2009-04-19 21:57:19 +020011bounds-file := include/generated/bounds.h
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070012
13always := $(bounds-file)
14targets := $(bounds-file) kernel/bounds.s
15
16quiet_cmd_bounds = GEN $@
17define cmd_bounds
18 (set -e; \
19 echo "#ifndef __LINUX_BOUNDS_H__"; \
20 echo "#define __LINUX_BOUNDS_H__"; \
21 echo "/*"; \
22 echo " * DO NOT MODIFY."; \
23 echo " *"; \
24 echo " * This file was generated by Kbuild"; \
25 echo " *"; \
26 echo " */"; \
27 echo ""; \
28 sed -ne $(sed-y) $<; \
29 echo ""; \
30 echo "#endif" ) > $@
31endef
32
33# We use internal kbuild rules to avoid the "is up to date" message from make
34kernel/bounds.s: kernel/bounds.c FORCE
35 $(Q)mkdir -p $(dir $@)
36 $(call if_changed_dep,cc_s_c)
37
38$(obj)/$(bounds-file): kernel/bounds.s Kbuild
39 $(Q)mkdir -p $(dir $@)
40 $(call cmd,bounds)
41
42#####
43# 2) Generate asm-offsets.h
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020044#
45
Sam Ravnborg559df2e2009-04-19 22:35:10 +020046offsets-file := include/generated/asm-offsets.h
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020047
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070048always += $(offsets-file)
49targets += $(offsets-file)
Thomas Gleixner6752ed92007-10-11 11:11:36 +020050targets += arch/$(SRCARCH)/kernel/asm-offsets.s
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070051
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020052
Sam Ravnborg048eb582005-09-09 22:32:31 +020053# Default sed regexp - multiline due to syntax constraints
54define sed-y
Christoph Lameterbf2ae2b2008-04-28 02:12:45 -070055 "/^->/{s:->#\(.*\):/* \1 */:; \
Alexander van Heukeluma22dcdb2010-10-21 23:30:49 +020056 s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 (\2) /* \3 */:; \
57 s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
Christoph Lameterbf2ae2b2008-04-28 02:12:45 -070058 s:->::; p;}"
Sam Ravnborg048eb582005-09-09 22:32:31 +020059endef
Sam Ravnborg048eb582005-09-09 22:32:31 +020060
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020061quiet_cmd_offsets = GEN $@
62define cmd_offsets
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020063 (set -e; \
64 echo "#ifndef __ASM_OFFSETS_H__"; \
65 echo "#define __ASM_OFFSETS_H__"; \
66 echo "/*"; \
67 echo " * DO NOT MODIFY."; \
68 echo " *"; \
Olaf Hering65ff22e2006-07-25 18:42:26 -070069 echo " * This file was generated by Kbuild"; \
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020070 echo " *"; \
71 echo " */"; \
72 echo ""; \
Brian Gerstac448af2006-01-06 18:28:45 -050073 sed -ne $(sed-y) $<; \
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020074 echo ""; \
75 echo "#endif" ) > $@
76endef
77
78# We use internal kbuild rules to avoid the "is up to date" message from make
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070079arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
80 $(obj)/$(bounds-file) FORCE
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020081 $(Q)mkdir -p $(dir $@)
82 $(call if_changed_dep,cc_s_c)
83
Thomas Gleixner6752ed92007-10-11 11:11:36 +020084$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
Sam Ravnborg86feeaa2005-09-09 19:28:28 +020085 $(call cmd,offsets)
86
Sam Ravnborgc53aeca2007-03-27 22:50:29 +020087#####
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070088# 3) Check for missing system calls
Sam Ravnborgc53aeca2007-03-27 22:50:29 +020089#
90
91quiet_cmd_syscalls = CALL $<
92 cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)
93
94PHONY += missing-syscalls
95missing-syscalls: scripts/checksyscalls.sh FORCE
96 $(call cmd,syscalls)
Christoph Lameter1cdf25d2008-04-28 02:12:44 -070097
98# Delete all targets during make clean
Jan Blunck7d3cc8b2008-05-16 13:54:59 +020099clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file) $(offsets-file),$(targets)))