| Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 1 | # |
| 2 | # Kbuild for top-level directory of the kernel |
| 3 | # This file takes care of the following: |
| Christoph Lameter | 1cdf25d | 2008-04-28 02:12:44 -0700 | [diff] [blame] | 4 | # 1) Generate bounds.h |
| Nicholas Mc Guire | 0a22798 | 2015-05-18 14:19:12 +0200 | [diff] [blame] | 5 | # 2) Generate timeconst.h |
| 6 | # 3) Generate asm-offsets.h (may need bounds.h and timeconst.h) |
| 7 | # 4) Check for missing system calls |
| Kieran Bingham | f197d75 | 2016-05-23 16:24:40 -0700 | [diff] [blame] | 8 | # 5) Generate constants.py (may need bounds.h) |
| Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 9 | |
| Masahiro Yamada | 39664e2 | 2015-01-05 15:57:15 +0900 | [diff] [blame] | 10 | ##### |
| 11 | # 1) Generate bounds.h |
| 12 | |
| 13 | bounds-file := include/generated/bounds.h |
| 14 | |
| 15 | always := $(bounds-file) |
| Masahiro Yamada | 8a58e16 | 2015-03-26 20:59:52 +0900 | [diff] [blame] | 16 | targets := kernel/bounds.s |
| Masahiro Yamada | 39664e2 | 2015-01-05 15:57:15 +0900 | [diff] [blame] | 17 | |
| 18 | # We use internal kbuild rules to avoid the "is up to date" message from make |
| 19 | kernel/bounds.s: kernel/bounds.c FORCE |
| Masahiro Yamada | 39664e2 | 2015-01-05 15:57:15 +0900 | [diff] [blame] | 20 | $(call if_changed_dep,cc_s_c) |
| 21 | |
| Michal Marek | 70a4fd6 | 2015-03-11 11:01:01 +0100 | [diff] [blame] | 22 | $(obj)/$(bounds-file): kernel/bounds.s FORCE |
| 23 | $(call filechk,offsets,__LINUX_BOUNDS_H__) |
| Masahiro Yamada | 39664e2 | 2015-01-05 15:57:15 +0900 | [diff] [blame] | 24 | |
| 25 | ##### |
| Nicholas Mc Guire | 0a22798 | 2015-05-18 14:19:12 +0200 | [diff] [blame] | 26 | # 2) Generate timeconst.h |
| 27 | |
| 28 | timeconst-file := include/generated/timeconst.h |
| 29 | |
| Nicholas Mc Guire | 0a22798 | 2015-05-18 14:19:12 +0200 | [diff] [blame] | 30 | targets += $(timeconst-file) |
| 31 | |
| 32 | quiet_cmd_gentimeconst = GEN $@ |
| 33 | define cmd_gentimeconst |
| 34 | (echo $(CONFIG_HZ) | bc -q $< ) > $@ |
| 35 | endef |
| 36 | define filechk_gentimeconst |
| 37 | (echo $(CONFIG_HZ) | bc -q $< ) |
| 38 | endef |
| 39 | |
| 40 | $(obj)/$(timeconst-file): kernel/time/timeconst.bc FORCE |
| 41 | $(call filechk,gentimeconst) |
| 42 | |
| 43 | ##### |
| 44 | # 3) Generate asm-offsets.h |
| Masahiro Yamada | 39664e2 | 2015-01-05 15:57:15 +0900 | [diff] [blame] | 45 | # |
| 46 | |
| 47 | offsets-file := include/generated/asm-offsets.h |
| 48 | |
| 49 | always += $(offsets-file) |
| Masahiro Yamada | 39664e2 | 2015-01-05 15:57:15 +0900 | [diff] [blame] | 50 | targets += arch/$(SRCARCH)/kernel/asm-offsets.s |
| 51 | |
| Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 52 | # We use internal kbuild rules to avoid the "is up to date" message from make |
| Christoph Lameter | 1cdf25d | 2008-04-28 02:12:44 -0700 | [diff] [blame] | 53 | arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \ |
| Nicholas Mc Guire | 0a22798 | 2015-05-18 14:19:12 +0200 | [diff] [blame] | 54 | $(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE |
| Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 55 | $(call if_changed_dep,cc_s_c) |
| 56 | |
| Michal Marek | 70a4fd6 | 2015-03-11 11:01:01 +0100 | [diff] [blame] | 57 | $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE |
| 58 | $(call filechk,offsets,__ASM_OFFSETS_H__) |
| Sam Ravnborg | 86feeaa | 2005-09-09 19:28:28 +0200 | [diff] [blame] | 59 | |
| Sam Ravnborg | c53aeca | 2007-03-27 22:50:29 +0200 | [diff] [blame] | 60 | ##### |
| Nicholas Mc Guire | 0a22798 | 2015-05-18 14:19:12 +0200 | [diff] [blame] | 61 | # 4) Check for missing system calls |
| Sam Ravnborg | c53aeca | 2007-03-27 22:50:29 +0200 | [diff] [blame] | 62 | # |
| 63 | |
| Arnaud Lacombe | 5f7efb4 | 2011-08-24 21:03:30 -0400 | [diff] [blame] | 64 | always += missing-syscalls |
| 65 | targets += missing-syscalls |
| 66 | |
| Sam Ravnborg | c53aeca | 2007-03-27 22:50:29 +0200 | [diff] [blame] | 67 | quiet_cmd_syscalls = CALL $< |
| David Daney | 44656fa | 2011-11-08 10:20:10 -0800 | [diff] [blame] | 68 | cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags) |
| Sam Ravnborg | c53aeca | 2007-03-27 22:50:29 +0200 | [diff] [blame] | 69 | |
| Arnaud Lacombe | 5f7efb4 | 2011-08-24 21:03:30 -0400 | [diff] [blame] | 70 | missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE |
| Sam Ravnborg | c53aeca | 2007-03-27 22:50:29 +0200 | [diff] [blame] | 71 | $(call cmd,syscalls) |
| Christoph Lameter | 1cdf25d | 2008-04-28 02:12:44 -0700 | [diff] [blame] | 72 | |
| Kieran Bingham | f197d75 | 2016-05-23 16:24:40 -0700 | [diff] [blame] | 73 | ##### |
| 74 | # 5) Generate constants for Python GDB integration |
| 75 | # |
| 76 | |
| 77 | extra-$(CONFIG_GDB_SCRIPTS) += build_constants_py |
| 78 | |
| 79 | build_constants_py: $(obj)/$(timeconst-file) $(obj)/$(bounds-file) |
| 80 | @$(MAKE) $(build)=scripts/gdb/linux $@ |
| 81 | |
| Nicholas Mc Guire | 0a22798 | 2015-05-18 14:19:12 +0200 | [diff] [blame] | 82 | # Keep these three files during make clean |
| 83 | no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file) |