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Commit | Line | Data |
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86feeaa8 SR |
1 | # |
2 | # Kbuild for top-level directory of the kernel | |
3 | # This file takes care of the following: | |
1cdf25d7 CL |
4 | # 1) Generate bounds.h |
5 | # 2) Generate asm-offsets.h (may need bounds.h) | |
6 | # 3) Check for missing system calls | |
86feeaa8 | 7 | |
39664e2f MY |
8 | # Default sed regexp - multiline due to syntax constraints |
9 | define sed-y | |
10 | "/^->/{s:->#\(.*\):/* \1 */:; \ | |
11 | s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \ | |
12 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ | |
13 | s:->::; p;}" | |
14 | endef | |
1cdf25d7 | 15 | |
39664e2f MY |
16 | quiet_cmd_offsets = GEN $@ |
17 | define cmd_offsets | |
1cdf25d7 | 18 | (set -e; \ |
39664e2f MY |
19 | echo "#ifndef $2"; \ |
20 | echo "#define $2"; \ | |
1cdf25d7 CL |
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" ) > $@ | |
31 | endef | |
32 | ||
39664e2f MY |
33 | ##### |
34 | # 1) Generate bounds.h | |
35 | ||
36 | bounds-file := include/generated/bounds.h | |
37 | ||
38 | always := $(bounds-file) | |
39 | targets := $(bounds-file) kernel/bounds.s | |
40 | ||
1cdf25d7 CL |
41 | # We use internal kbuild rules to avoid the "is up to date" message from make |
42 | kernel/bounds.s: kernel/bounds.c FORCE | |
43 | $(Q)mkdir -p $(dir $@) | |
44 | $(call if_changed_dep,cc_s_c) | |
45 | ||
46 | $(obj)/$(bounds-file): kernel/bounds.s Kbuild | |
47 | $(Q)mkdir -p $(dir $@) | |
39664e2f | 48 | $(call cmd,offsets,__LINUX_BOUNDS_H__) |
1cdf25d7 CL |
49 | |
50 | ##### | |
51 | # 2) Generate asm-offsets.h | |
86feeaa8 SR |
52 | # |
53 | ||
559df2e0 | 54 | offsets-file := include/generated/asm-offsets.h |
86feeaa8 | 55 | |
1cdf25d7 CL |
56 | always += $(offsets-file) |
57 | targets += $(offsets-file) | |
6752ed90 | 58 | targets += arch/$(SRCARCH)/kernel/asm-offsets.s |
1cdf25d7 | 59 | |
86feeaa8 | 60 | # We use internal kbuild rules to avoid the "is up to date" message from make |
1cdf25d7 CL |
61 | arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \ |
62 | $(obj)/$(bounds-file) FORCE | |
86feeaa8 SR |
63 | $(Q)mkdir -p $(dir $@) |
64 | $(call if_changed_dep,cc_s_c) | |
65 | ||
6752ed90 | 66 | $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild |
39664e2f | 67 | $(call cmd,offsets,__ASM_OFFSETS_H__) |
86feeaa8 | 68 | |
c53aeca0 | 69 | ##### |
1cdf25d7 | 70 | # 3) Check for missing system calls |
c53aeca0 SR |
71 | # |
72 | ||
5f7efb4c AL |
73 | always += missing-syscalls |
74 | targets += missing-syscalls | |
75 | ||
c53aeca0 | 76 | quiet_cmd_syscalls = CALL $< |
44656fa0 | 77 | cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags) |
c53aeca0 | 78 | |
5f7efb4c | 79 | missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE |
c53aeca0 | 80 | $(call cmd,syscalls) |
1cdf25d7 | 81 | |
ef8ff89b MM |
82 | # Keep these two files during make clean |
83 | no-clean-files := $(bounds-file) $(offsets-file) |