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Source at commit cdde9cf73945d547acd3e96f9508c79e84ad0bf1 created 12 years 9 months ago. By Maarten ter Huurne, MMC: JZ4740: Added support for CPU frequency changing | |
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1 | #!/bin/sh |
2 | # |
3 | # link vmlinux |
4 | # |
5 | # vmlinux is linked from the objects selected by $(KBUILD_VMLINUX_INIT) and |
6 | # $(KBUILD_VMLINUX_MAIN). Most are built-in.o files from top-level directories |
7 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
8 | # Ordering when linking is important, and $(KBUILD_VMLINUX_INIT) must be first. |
9 | # |
10 | # vmlinux |
11 | # ^ |
12 | # | |
13 | # +-< $(KBUILD_VMLINUX_INIT) |
14 | # | +--< init/version.o + more |
15 | # | |
16 | # +--< $(KBUILD_VMLINUX_MAIN) |
17 | # | +--< drivers/built-in.o mm/built-in.o + more |
18 | # | |
19 | # +-< ${kallsymso} (see description in KALLSYMS section) |
20 | # |
21 | # vmlinux version (uname -v) cannot be updated during normal |
22 | # descending-into-subdirs phase since we do not yet know if we need to |
23 | # update vmlinux. |
24 | # Therefore this step is delayed until just before final link of vmlinux. |
25 | # |
26 | # System.map is generated to document addresses of all kernel symbols |
27 | |
28 | # Error out on error |
29 | set -e |
30 | |
31 | # Nice output in kbuild format |
32 | # Will be supressed by "make -s" |
33 | info() |
34 | { |
35 | if [ "${quiet}" != "silent_" ]; then |
36 | printf " %-7s %s\n" ${1} ${2} |
37 | fi |
38 | } |
39 | |
40 | # Link of vmlinux.o used for section mismatch analysis |
41 | # ${1} output file |
42 | modpost_link() |
43 | { |
44 | ${LD} ${LDFLAGS} -r -o ${1} ${KBUILD_VMLINUX_INIT} \ |
45 | --start-group ${KBUILD_VMLINUX_MAIN} --end-group |
46 | } |
47 | |
48 | # Link of vmlinux |
49 | # ${1} - optional extra .o files |
50 | # ${2} - output file |
51 | vmlinux_link() |
52 | { |
53 | local lds="${objtree}/${KBUILD_LDS}" |
54 | |
55 | if [ "${SRCARCH}" != "um" ]; then |
56 | ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} \ |
57 | -T ${lds} ${KBUILD_VMLINUX_INIT} \ |
58 | --start-group ${KBUILD_VMLINUX_MAIN} --end-group ${1} |
59 | else |
60 | ${CC} ${CFLAGS_vmlinux} -o ${2} \ |
61 | -Wl,-T,${lds} ${KBUILD_VMLINUX_INIT} \ |
62 | -Wl,--start-group \ |
63 | ${KBUILD_VMLINUX_MAIN} \ |
64 | -Wl,--end-group \ |
65 | -lutil ${1} |
66 | rm -f linux |
67 | fi |
68 | } |
69 | |
70 | |
71 | # Create ${2} .o file with all symbols from the ${1} object file |
72 | kallsyms() |
73 | { |
74 | info KSYM ${2} |
75 | local kallsymopt; |
76 | |
77 | if [ -n "${CONFIG_SYMBOL_PREFIX}" ]; then |
78 | kallsymopt="${kallsymopt} \ |
79 | --symbol-prefix=${CONFIG_SYMBOL_PREFIX}" |
80 | fi |
81 | |
82 | if [ -n "${CONFIG_KALLSYMS_ALL}" ]; then |
83 | kallsymopt="${kallsymopt} --all-symbols" |
84 | fi |
85 | |
86 | local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \ |
87 | ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}" |
88 | |
89 | ${NM} -n ${1} | \ |
90 | scripts/kallsyms ${kallsymopt} | \ |
91 | ${CC} ${aflags} -c -o ${2} -x assembler-with-cpp - |
92 | } |
93 | |
94 | # Create map file with all symbols from ${1} |
95 | # See mksymap for additional details |
96 | mksysmap() |
97 | { |
98 | ${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2} |
99 | } |
100 | |
101 | sortextable() |
102 | { |
103 | ${objtree}/scripts/sortextable ${1} |
104 | } |
105 | |
106 | # Delete output files in case of error |
107 | trap cleanup SIGHUP SIGINT SIGQUIT SIGTERM ERR |
108 | cleanup() |
109 | { |
110 | rm -f .old_version |
111 | rm -f .tmp_System.map |
112 | rm -f .tmp_kallsyms* |
113 | rm -f .tmp_version |
114 | rm -f .tmp_vmlinux* |
115 | rm -f System.map |
116 | rm -f vmlinux |
117 | rm -f vmlinux.o |
118 | } |
119 | |
120 | # |
121 | # |
122 | # Use "make V=1" to debug this script |
123 | case "${KBUILD_VERBOSE}" in |
124 | *1*) |
125 | set -x |
126 | ;; |
127 | esac |
128 | |
129 | if [ "$1" = "clean" ]; then |
130 | cleanup |
131 | exit 0 |
132 | fi |
133 | |
134 | # We need access to CONFIG_ symbols |
135 | . ./.config |
136 | |
137 | #link vmlinux.o |
138 | info LD vmlinux.o |
139 | modpost_link vmlinux.o |
140 | |
141 | # modpost vmlinux.o to check for section mismatches |
142 | ${MAKE} -f "${srctree}/scripts/Makefile.modpost" vmlinux.o |
143 | |
144 | # Update version |
145 | info GEN .version |
146 | if [ ! -r .version ]; then |
147 | rm -f .version; |
148 | echo 1 >.version; |
149 | else |
150 | mv .version .old_version; |
151 | expr 0$(cat .old_version) + 1 >.version; |
152 | fi; |
153 | |
154 | # final build of init/ |
155 | ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init |
156 | |
157 | kallsymso="" |
158 | kallsyms_vmlinux="" |
159 | if [ -n "${CONFIG_KALLSYMS}" ]; then |
160 | |
161 | # kallsyms support |
162 | # Generate section listing all symbols and add it into vmlinux |
163 | # It's a three step process: |
164 | # 1) Link .tmp_vmlinux1 so it has all symbols and sections, |
165 | # but __kallsyms is empty. |
166 | # Running kallsyms on that gives us .tmp_kallsyms1.o with |
167 | # the right size |
168 | # 2) Link .tmp_vmlinux2 so it now has a __kallsyms section of |
169 | # the right size, but due to the added section, some |
170 | # addresses have shifted. |
171 | # From here, we generate a correct .tmp_kallsyms2.o |
172 | # 2a) We may use an extra pass as this has been necessary to |
173 | # woraround some alignment related bugs. |
174 | # KALLSYMS_EXTRA_PASS=1 is used to trigger this. |
175 | # 3) The correct ${kallsymso} is linked into the final vmlinux. |
176 | # |
177 | # a) Verify that the System.map from vmlinux matches the map from |
178 | # ${kallsymso}. |
179 | |
180 | kallsymso=.tmp_kallsyms2.o |
181 | kallsyms_vmlinux=.tmp_vmlinux2 |
182 | |
183 | # step 1 |
184 | vmlinux_link "" .tmp_vmlinux1 |
185 | kallsyms .tmp_vmlinux1 .tmp_kallsyms1.o |
186 | |
187 | # step 2 |
188 | vmlinux_link .tmp_kallsyms1.o .tmp_vmlinux2 |
189 | kallsyms .tmp_vmlinux2 .tmp_kallsyms2.o |
190 | |
191 | # step 2a |
192 | if [ -n "${KALLSYMS_EXTRA_PASS}" ]; then |
193 | kallsymso=.tmp_kallsyms3.o |
194 | kallsyms_vmlinux=.tmp_vmlinux3 |
195 | |
196 | vmlinux_link .tmp_kallsyms2.o .tmp_vmlinux3 |
197 | |
198 | kallsyms .tmp_vmlinux3 .tmp_kallsyms3.o |
199 | fi |
200 | fi |
201 | |
202 | info LD vmlinux |
203 | vmlinux_link "${kallsymso}" vmlinux |
204 | |
205 | if [ -n "${CONFIG_BUILDTIME_EXTABLE_SORT}" ]; then |
206 | info SORTEX vmlinux |
207 | sortextable vmlinux |
208 | fi |
209 | |
210 | info SYSMAP System.map |
211 | mksysmap vmlinux System.map |
212 | |
213 | # step a (see comment above) |
214 | if [ -n "${CONFIG_KALLSYMS}" ]; then |
215 | mksysmap ${kallsyms_vmlinux} .tmp_System.map |
216 | |
217 | if ! cmp -s System.map .tmp_System.map; then |
218 | echo >&2 Inconsistent kallsyms data |
219 | echo >&2 Try "make KALLSYMS_EXTRA_PASS=1" as a workaround |
220 | cleanup |
221 | exit 1 |
222 | fi |
223 | fi |
224 | |
225 | # We made a new kernel - delete old version file |
226 | rm -f .old_version |
227 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9