1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 1) #!/bin/sh
b24413180f560 (Greg Kroah-Hartman 2017-11-01 15:07:57 +0100 2) # SPDX-License-Identifier: GPL-2.0
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 3) #
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 4) # link vmlinux
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 5) #
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 6) # vmlinux is linked from the objects selected by $(KBUILD_VMLINUX_OBJS) and
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 7) # $(KBUILD_VMLINUX_LIBS). Most are built-in.a files from top-level directories
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 8) # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 9) # $(KBUILD_VMLINUX_LIBS) are archives which are linked conditionally
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 10) # (not within --whole-archive), and do not require symbol indexes added.
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 11) #
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 12) # vmlinux
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 13) # ^
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 14) # |
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 15) # +--< $(KBUILD_VMLINUX_OBJS)
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 16) # | +--< init/built-in.a drivers/built-in.a mm/built-in.a + more
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 17) # |
3a166fc2d4ef7 (Nicholas Piggin 2017-06-20 01:52:05 +1000 18) # +--< $(KBUILD_VMLINUX_LIBS)
3a166fc2d4ef7 (Nicholas Piggin 2017-06-20 01:52:05 +1000 19) # | +--< lib/lib.a + more
3a166fc2d4ef7 (Nicholas Piggin 2017-06-20 01:52:05 +1000 20) # |
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 21) # +-< ${kallsymso} (see description in KALLSYMS section)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 22) #
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 23) # vmlinux version (uname -v) cannot be updated during normal
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 24) # descending-into-subdirs phase since we do not yet know if we need to
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 25) # update vmlinux.
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 26) # Therefore this step is delayed until just before final link of vmlinux.
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 27) #
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 28) # System.map is generated to document addresses of all kernel symbols
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 29)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 30) # Error out on error
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 31) set -e
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 32)
3ec8a5b33deac (Masahiro Yamada 2020-07-02 04:29:36 +0900 33) LD="$1"
3ec8a5b33deac (Masahiro Yamada 2020-07-02 04:29:36 +0900 34) KBUILD_LDFLAGS="$2"
3ec8a5b33deac (Masahiro Yamada 2020-07-02 04:29:36 +0900 35) LDFLAGS_vmlinux="$3"
3ec8a5b33deac (Masahiro Yamada 2020-07-02 04:29:36 +0900 36)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 37) # Nice output in kbuild format
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 38) # Will be supressed by "make -s"
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 39) info()
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 40) {
c39013ee64b50 (Masahiro Yamada 2021-05-17 16:03:14 +0900 41) printf " %-7s %s\n" "${1}" "${2}"
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 42) }
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 43)
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 44) # Generate a linker script to ensure correct ordering of initcalls.
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 45) gen_initcalls()
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 46) {
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 47) info GEN .tmp_initcalls.lds
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 48)
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 49) ${PYTHON} ${srctree}/scripts/jobserver-exec \
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 50) ${PERL} ${srctree}/scripts/generate_initcall_order.pl \
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 51) ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS} \
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 52) > .tmp_initcalls.lds
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 53) }
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 54)
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 55) # If CONFIG_LTO_CLANG is selected, collect generated symbol versions into
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 56) # .tmp_symversions.lds
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 57) gen_symversions()
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 58) {
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 59) info GEN .tmp_symversions.lds
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 60) rm -f .tmp_symversions.lds
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 61)
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 62) for o in ${KBUILD_VMLINUX_OBJS} ${KBUILD_VMLINUX_LIBS}; do
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 63) if [ -f ${o}.symversions ]; then
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 64) cat ${o}.symversions >> .tmp_symversions.lds
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 65) fi
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 66) done
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 67) }
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 68)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 69) # Link of vmlinux.o used for section mismatch analysis
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 70) # ${1} output file
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 71) modpost_link()
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 72) {
a5967db9af51a (Stephen Rothwell 2016-08-24 22:29:19 +1000 73) local objects
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 74) local lds=""
a5967db9af51a (Stephen Rothwell 2016-08-24 22:29:19 +1000 75)
6358d6e8b9846 (Nicholas Piggin 2018-02-11 00:25:03 +1000 76) objects="--whole-archive \
d151e9719f184 (Masahiro Yamada 2019-01-17 09:10:04 +0900 77) ${KBUILD_VMLINUX_OBJS} \
6358d6e8b9846 (Nicholas Piggin 2018-02-11 00:25:03 +1000 78) --no-whole-archive \
6358d6e8b9846 (Nicholas Piggin 2018-02-11 00:25:03 +1000 79) --start-group \
6358d6e8b9846 (Nicholas Piggin 2018-02-11 00:25:03 +1000 80) ${KBUILD_VMLINUX_LIBS} \
6358d6e8b9846 (Nicholas Piggin 2018-02-11 00:25:03 +1000 81) --end-group"
6358d6e8b9846 (Nicholas Piggin 2018-02-11 00:25:03 +1000 82)
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 83) if [ -n "${CONFIG_LTO_CLANG}" ]; then
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 84) gen_initcalls
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 85) lds="-T .tmp_initcalls.lds"
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 86)
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 87) if [ -n "${CONFIG_MODVERSIONS}" ]; then
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 88) gen_symversions
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 89) lds="${lds} -T .tmp_symversions.lds"
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 90) fi
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 91)
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 92) # This might take a while, so indicate that we're doing
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 93) # an LTO link
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 94) info LTO ${1}
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 95) else
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 96) info LD ${1}
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 97) fi
dc5723b02e523 (Sami Tolvanen 2020-12-11 10:46:19 -0800 98)
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 99) ${LD} ${KBUILD_LDFLAGS} -r -o ${1} ${lds} ${objects}
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 100) }
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 101)
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 102) objtool_link()
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 103) {
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 104) local objtoolcmd;
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 105) local objtoolopt;
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 106)
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 107) if [ "${CONFIG_LTO_CLANG} ${CONFIG_STACK_VALIDATION}" = "y y" ]; then
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 108) # Don't perform vmlinux validation unless explicitly requested,
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 109) # but run objtool on vmlinux.o now that we have an object file.
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 110) if [ -n "${CONFIG_UNWINDER_ORC}" ]; then
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 111) objtoolcmd="orc generate"
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 112) fi
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 113)
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 114) objtoolopt="${objtoolopt} --duplicate"
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 115)
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 116) if [ -n "${CONFIG_FTRACE_MCOUNT_USE_OBJTOOL}" ]; then
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 117) objtoolopt="${objtoolopt} --mcount"
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 118) fi
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 119) fi
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 120)
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 121) if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 122) objtoolopt="${objtoolopt} --noinstr"
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 123) fi
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 124)
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 125) if [ -n "${objtoolopt}" ]; then
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 126) if [ -z "${objtoolcmd}" ]; then
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 127) objtoolcmd="check"
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 128) fi
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 129) objtoolopt="${objtoolopt} --vmlinux"
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 130) if [ -z "${CONFIG_FRAME_POINTER}" ]; then
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 131) objtoolopt="${objtoolopt} --no-fp"
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 132) fi
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 133) if [ -n "${CONFIG_GCOV_KERNEL}" ] || [ -n "${CONFIG_LTO_CLANG}" ]; then
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 134) objtoolopt="${objtoolopt} --no-unreachable"
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 135) fi
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 136) if [ -n "${CONFIG_RETPOLINE}" ]; then
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 137) objtoolopt="${objtoolopt} --retpoline"
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 138) fi
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 139) if [ -n "${CONFIG_X86_SMAP}" ]; then
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 140) objtoolopt="${objtoolopt} --uaccess"
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 141) fi
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 142) info OBJTOOL ${1}
b1a1a1a09b460 (Sami Tolvanen 2020-04-13 16:10:13 -0700 143) tools/objtool/objtool ${objtoolcmd} ${objtoolopt} ${1}
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 144) fi
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 145) }
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 146)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 147) # Link of vmlinux
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 148) # ${1} - output file
618916a4bf169 (Andrii Nakryiko 2019-09-05 10:59:38 -0700 149) # ${2}, ${3}, ... - optional extra .o files
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 150) vmlinux_link()
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 151) {
618916a4bf169 (Andrii Nakryiko 2019-09-05 10:59:38 -0700 152) local output=${1}
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 153) local objs
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 154) local libs
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 155) local ld
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 156) local ldflags
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 157) local ldlibs
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 158)
d7b0827f28ab3 (Linus Torvalds 2019-09-20 08:36:47 -0700 159) info LD ${output}
d7b0827f28ab3 (Linus Torvalds 2019-09-20 08:36:47 -0700 160)
618916a4bf169 (Andrii Nakryiko 2019-09-05 10:59:38 -0700 161) # skip output file argument
618916a4bf169 (Andrii Nakryiko 2019-09-05 10:59:38 -0700 162) shift
618916a4bf169 (Andrii Nakryiko 2019-09-05 10:59:38 -0700 163)
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 164) if [ -n "${CONFIG_LTO_CLANG}" ]; then
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 165) # Use vmlinux.o instead of performing the slow LTO link again.
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 166) objs=vmlinux.o
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 167) libs=
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 168) else
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 169) objs="${KBUILD_VMLINUX_OBJS}"
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 170) libs="${KBUILD_VMLINUX_LIBS}"
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 171) fi
8f1305124ea48 (Masahiro Yamada 2021-08-19 09:57:37 +0900 172)
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 173) if [ "${SRCARCH}" = "um" ]; then
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 174) wl=-Wl,
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 175) ld="${CC}"
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 176) ldflags="${CFLAGS_vmlinux}"
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 177) ldlibs="-lutil -lrt -lpthread"
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 178) else
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 179) wl=
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 180) ld="${LD}"
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 181) ldflags="${KBUILD_LDFLAGS} ${LDFLAGS_vmlinux}"
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 182) ldlibs=
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 183) fi
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 184)
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 185) ldflags="${ldflags} ${wl}--script=${objtree}/${KBUILD_LDS}"
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 186)
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 187) # The kallsyms linking does not need debug symbols included.
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 188) if [ "$output" != "${output#.tmp_vmlinux.kallsyms}" ] ; then
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 189) ldflags="${ldflags} ${wl}--strip-debug"
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 190) fi
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 191)
5cc1247204616 (Rasmus Villemoes 2021-03-05 10:27:07 +0100 192) if [ -n "${CONFIG_VMLINUX_MAP}" ]; then
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 193) ldflags="${ldflags} ${wl}-Map=${output}.map"
5cc1247204616 (Rasmus Villemoes 2021-03-05 10:27:07 +0100 194) fi
5cc1247204616 (Rasmus Villemoes 2021-03-05 10:27:07 +0100 195)
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 196) ${ld} ${ldflags} -o ${output} \
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 197) ${wl}--whole-archive ${objs} ${wl}--no-whole-archive \
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 198) ${wl}--start-group ${libs} ${wl}--end-group \
5df77ad61fd71 (Masahiro Yamada 2021-08-19 09:57:39 +0900 199) $@ ${ldlibs}
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 200) }
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 201)
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 202) # generate .BTF typeinfo from DWARF debuginfo
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 203) # ${1} - vmlinux image
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 204) # ${2} - file to dump raw BTF data into
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 205) gen_btf()
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 206) {
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 207) local pahole_ver
db16c1fe92d7b (Ilya Leoshkevich 2021-04-13 21:00:43 +0200 208) local extra_paholeopt=
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 209)
581b31c36cfc5 (Andrii Nakryiko 2019-05-05 17:10:33 -0700 210) if ! [ -x "$(command -v ${PAHOLE})" ]; then
2a67a6ccb01f2 (Chris Down 2020-01-22 00:01:10 +0000 211) echo >&2 "BTF: ${1}: pahole (${PAHOLE}) is not available"
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 212) return 1
581b31c36cfc5 (Andrii Nakryiko 2019-05-05 17:10:33 -0700 213) fi
581b31c36cfc5 (Andrii Nakryiko 2019-05-05 17:10:33 -0700 214)
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 215) pahole_ver=$(${PAHOLE} --version | sed -E 's/v([0-9]+)\.([0-9]+)/\1\2/')
21a85bd601ee5 (Lorenz Bauer 2020-06-08 10:42:57 +0100 216) if [ "${pahole_ver}" -lt "116" ]; then
21a85bd601ee5 (Lorenz Bauer 2020-06-08 10:42:57 +0100 217) echo >&2 "BTF: ${1}: pahole version $(${PAHOLE} --version) is too old, need at least v1.16"
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 218) return 1
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 219) fi
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 220)
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 221) vmlinux_link ${1}
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 222)
a0b8200d06ad6 (Andrii Nakryiko 2021-06-28 19:41:34 -0700 223) if [ "${pahole_ver}" -ge "118" ] && [ "${pahole_ver}" -le "121" ]; then
a0b8200d06ad6 (Andrii Nakryiko 2021-06-28 19:41:34 -0700 224) # pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars
a0b8200d06ad6 (Andrii Nakryiko 2021-06-28 19:41:34 -0700 225) extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_vars"
a0b8200d06ad6 (Andrii Nakryiko 2021-06-28 19:41:34 -0700 226) fi
db16c1fe92d7b (Ilya Leoshkevich 2021-04-13 21:00:43 +0200 227) if [ "${pahole_ver}" -ge "121" ]; then
db16c1fe92d7b (Ilya Leoshkevich 2021-04-13 21:00:43 +0200 228) extra_paholeopt="${extra_paholeopt} --btf_gen_floats"
db16c1fe92d7b (Ilya Leoshkevich 2021-04-13 21:00:43 +0200 229) fi
db16c1fe92d7b (Ilya Leoshkevich 2021-04-13 21:00:43 +0200 230)
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 231) info "BTF" ${2}
ff2e6efda0d5c (Javier Martinez Canillas 2021-05-26 23:52:28 +0200 232) LLVM_OBJCOPY="${OBJCOPY}" ${PAHOLE} -J ${extra_paholeopt} ${1}
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 233)
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 234) # Create ${2} which contains just .BTF section but no symbols. Add
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 235) # SHF_ALLOC because .BTF will be part of the vmlinux image. --strip-all
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 236) # deletes all symbols including __start_BTF and __stop_BTF, which will
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 237) # be redefined in the linker script. Add 2>/dev/null to suppress GNU
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 238) # objcopy warnings: "empty loadable segment detected at ..."
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 239) ${OBJCOPY} --only-section=.BTF --set-section-flags .BTF=alloc,readonly \
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 240) --strip-all ${1} ${2} 2>/dev/null
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 241) # Change e_type to ET_REL so that it can be used to link final vmlinux.
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 242) # Unlike GNU ld, lld does not allow an ET_EXEC input.
90ceddcb49500 (Fangrui Song 2020-03-18 15:27:46 -0700 243) printf '\1' | dd of=${2} conv=notrunc bs=1 seek=16 status=none
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 244) }
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 245)
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 246) # Create ${2} .S file with all symbols from the ${1} object file
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 247) kallsyms()
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 248) {
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 249) local kallsymopt;
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 250)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 251) if [ -n "${CONFIG_KALLSYMS_ALL}" ]; then
6895f97e15895 (James Hogan 2012-09-06 22:11:25 +0100 252) kallsymopt="${kallsymopt} --all-symbols"
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 253) fi
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 254)
4d5d5664c9008 (Ard Biesheuvel 2016-03-15 14:58:12 -0700 255) if [ -n "${CONFIG_KALLSYMS_ABSOLUTE_PERCPU}" ]; then
c6bda7c988a57 (Rusty Russell 2014-03-17 14:05:46 +1030 256) kallsymopt="${kallsymopt} --absolute-percpu"
c6bda7c988a57 (Rusty Russell 2014-03-17 14:05:46 +1030 257) fi
c6bda7c988a57 (Rusty Russell 2014-03-17 14:05:46 +1030 258)
2213e9a66bb87 (Ard Biesheuvel 2016-03-15 14:58:19 -0700 259) if [ -n "${CONFIG_KALLSYMS_BASE_RELATIVE}" ]; then
2213e9a66bb87 (Ard Biesheuvel 2016-03-15 14:58:19 -0700 260) kallsymopt="${kallsymopt} --base-relative"
2213e9a66bb87 (Ard Biesheuvel 2016-03-15 14:58:19 -0700 261) fi
2213e9a66bb87 (Ard Biesheuvel 2016-03-15 14:58:19 -0700 262)
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 263) info KSYMS ${2}
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 264) ${NM} -n ${1} | scripts/kallsyms ${kallsymopt} > ${2}
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 265) }
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 266)
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 267) # Perform one step in kallsyms generation, including temporary linking of
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 268) # vmlinux.
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 269) kallsyms_step()
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 270) {
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 271) kallsymso_prev=${kallsymso}
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 272) kallsyms_vmlinux=.tmp_vmlinux.kallsyms${1}
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 273) kallsymso=${kallsyms_vmlinux}.o
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 274) kallsyms_S=${kallsyms_vmlinux}.S
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 275)
d7b0827f28ab3 (Linus Torvalds 2019-09-20 08:36:47 -0700 276) vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 277) kallsyms ${kallsyms_vmlinux} ${kallsyms_S}
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 278)
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 279) info AS ${kallsyms_S}
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 280) ${CC} ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS} \
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 281) ${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \
08beb669cb3f1 (Masahiro Yamada 2020-09-25 00:45:46 +0900 282) -c -o ${kallsymso} ${kallsyms_S}
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 283) }
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 284)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 285) # Create map file with all symbols from ${1}
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 286) # See mksymap for additional details
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 287) mksysmap()
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 288) {
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 289) ${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2}
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 290) }
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 291)
1091670637be8 (Shile Zhang 2019-12-04 08:46:31 +0800 292) sorttable()
1347a2cebcb4c (Linus Torvalds 2012-05-28 10:32:28 -0700 293) {
1091670637be8 (Shile Zhang 2019-12-04 08:46:31 +0800 294) ${objtree}/scripts/sorttable ${1}
1347a2cebcb4c (Linus Torvalds 2012-05-28 10:32:28 -0700 295) }
1347a2cebcb4c (Linus Torvalds 2012-05-28 10:32:28 -0700 296)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 297) # Delete output files in case of error
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 298) cleanup()
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 299) {
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 300) rm -f .btf.*
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 301) rm -f .tmp_System.map
a8cccdd954732 (Sami Tolvanen 2020-12-11 10:46:24 -0800 302) rm -f .tmp_initcalls.lds
38e8918490038 (Sami Tolvanen 2020-12-11 10:46:20 -0800 303) rm -f .tmp_symversions.lds
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 304) rm -f .tmp_vmlinux*
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 305) rm -f System.map
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 306) rm -f vmlinux
5cc1247204616 (Rasmus Villemoes 2021-03-05 10:27:07 +0100 307) rm -f vmlinux.map
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 308) rm -f vmlinux.o
0b956e204132c (Rasmus Villemoes 2021-03-05 11:02:12 +0100 309) rm -f .vmlinux.d
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 310) }
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 311)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 312) # Use "make V=1" to debug this script
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 313) case "${KBUILD_VERBOSE}" in
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 314) *1*)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 315) set -x
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 316) ;;
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 317) esac
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 318)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 319) if [ "$1" = "clean" ]; then
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 320) cleanup
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 321) exit 0
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 322) fi
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 323)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 324) # We need access to CONFIG_ symbols
94cf8acc38e57 (Masahiro Yamada 2019-03-08 14:49:10 +0900 325) . include/config/auto.conf
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 326)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 327) # Update version
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 328) info GEN .version
278ae6040397f (Masahiro Yamada 2017-09-22 14:31:13 +0900 329) if [ -r .version ]; then
278ae6040397f (Masahiro Yamada 2017-09-22 14:31:13 +0900 330) VERSION=$(expr 0$(cat .version) + 1)
278ae6040397f (Masahiro Yamada 2017-09-22 14:31:13 +0900 331) echo $VERSION > .version
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 332) else
278ae6040397f (Masahiro Yamada 2017-09-22 14:31:13 +0900 333) rm -f .version
278ae6040397f (Masahiro Yamada 2017-09-22 14:31:13 +0900 334) echo 1 > .version
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 335) fi;
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 336)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 337) # final build of init/
083bc0e1ce91e (Masahiro Yamada 2020-02-11 05:06:34 +0900 338) ${MAKE} -f "${srctree}/scripts/Makefile.build" obj=init need-builtin=1
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 339)
abac4c89731c0 (Nicholas Piggin 2016-11-24 03:41:43 +1100 340) #link vmlinux.o
abac4c89731c0 (Nicholas Piggin 2016-11-24 03:41:43 +1100 341) modpost_link vmlinux.o
6804c1afd794c (Peter Zijlstra 2020-03-18 13:33:54 +0100 342) objtool_link vmlinux.o
abac4c89731c0 (Nicholas Piggin 2016-11-24 03:41:43 +1100 343)
abac4c89731c0 (Nicholas Piggin 2016-11-24 03:41:43 +1100 344) # modpost vmlinux.o to check for section mismatches
a721588d9475c (Masahiro Yamada 2019-07-31 00:59:02 +0900 345) ${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
abac4c89731c0 (Nicholas Piggin 2016-11-24 03:41:43 +1100 346)
898490c010b5d (Alexey Gladkov 2019-04-29 18:11:14 +0200 347) info MODINFO modules.builtin.modinfo
898490c010b5d (Alexey Gladkov 2019-04-29 18:11:14 +0200 348) ${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
8b41fc4454e36 (Masahiro Yamada 2019-12-19 17:33:29 +0900 349) info GEN modules.builtin
8b41fc4454e36 (Masahiro Yamada 2019-12-19 17:33:29 +0900 350) # The second line aids cases where multiple modules share the same object.
8b41fc4454e36 (Masahiro Yamada 2019-12-19 17:33:29 +0900 351) tr '\0' '\n' < modules.builtin.modinfo | sed -n 's/^[[:alnum:]:_]*\.file=//p' |
8b41fc4454e36 (Masahiro Yamada 2019-12-19 17:33:29 +0900 352) tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$/.ko/' > modules.builtin
898490c010b5d (Alexey Gladkov 2019-04-29 18:11:14 +0200 353)
7fd785685e224 (Andrii Nakryiko 2019-08-13 11:54:42 -0700 354) btf_vmlinux_bin_o=""
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 355) if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 356) btf_vmlinux_bin_o=.btf.vmlinux.bin.o
af73d78bd384a (Kees Cook 2020-03-03 18:18:34 -0800 357) if ! gen_btf .tmp_vmlinux.btf $btf_vmlinux_bin_o ; then
da5fb18225b49 (Stanislav Fomichev 2019-11-27 08:14:10 -0800 358) echo >&2 "Failed to generate BTF for vmlinux"
da5fb18225b49 (Stanislav Fomichev 2019-11-27 08:14:10 -0800 359) echo >&2 "Try to disable CONFIG_DEBUG_INFO_BTF"
da5fb18225b49 (Stanislav Fomichev 2019-11-27 08:14:10 -0800 360) exit 1
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 361) fi
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 362) fi
341dfcf8d78ea (Andrii Nakryiko 2019-08-12 11:39:47 -0700 363)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 364) kallsymso=""
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 365) kallsymso_prev=""
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 366) kallsyms_vmlinux=""
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 367) if [ -n "${CONFIG_KALLSYMS}" ]; then
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 368)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 369) # kallsyms support
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 370) # Generate section listing all symbols and add it into vmlinux
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 371) # It's a three step process:
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 372) # 1) Link .tmp_vmlinux1 so it has all symbols and sections,
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 373) # but __kallsyms is empty.
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 374) # Running kallsyms on that gives us .tmp_kallsyms1.o with
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 375) # the right size
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 376) # 2) Link .tmp_vmlinux2 so it now has a __kallsyms section of
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 377) # the right size, but due to the added section, some
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 378) # addresses have shifted.
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 379) # From here, we generate a correct .tmp_kallsyms2.o
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 380) # 3) That link may have expanded the kernel image enough that
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 381) # more linker branch stubs / trampolines had to be added, which
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 382) # introduces new names, which further expands kallsyms. Do another
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 383) # pass if that is the case. In theory it's possible this results
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 384) # in even more stubs, but unlikely.
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 385) # KALLSYMS_EXTRA_PASS=1 may also used to debug or work around
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 386) # other bugs.
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 387) # 4) The correct ${kallsymso} is linked into the final vmlinux.
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 388) #
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 389) # a) Verify that the System.map from vmlinux matches the map from
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 390) # ${kallsymso}.
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 391)
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 392) kallsyms_step 1
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 393) kallsyms_step 2
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 394)
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 395) # step 3
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 396) size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso_prev})
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 397) size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso})
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 398)
7e2b37c971a2a (Nicholas Piggin 2016-11-24 03:41:37 +1100 399) if [ $size1 -ne $size2 ] || [ -n "${KALLSYMS_EXTRA_PASS}" ]; then
8959e39272d6e (Kees Cook 2019-08-13 08:15:32 -0700 400) kallsyms_step 3
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 401) fi
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 402) fi
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 403)
d7b0827f28ab3 (Linus Torvalds 2019-09-20 08:36:47 -0700 404) vmlinux_link vmlinux "${kallsymso}" ${btf_vmlinux_bin_o}
e83b9f55448af (Andrii Nakryiko 2019-04-02 09:49:50 -0700 405)
c9a0f3b85e09d (Jiri Olsa 2020-07-11 23:53:24 +0200 406) # fill in BTF IDs
017dab341ee75 (Jiri Olsa 2020-09-23 20:57:34 +0200 407) if [ -n "${CONFIG_DEBUG_INFO_BTF}" -a -n "${CONFIG_BPF}" ]; then
017dab341ee75 (Jiri Olsa 2020-09-23 20:57:34 +0200 408) info BTFIDS vmlinux
017dab341ee75 (Jiri Olsa 2020-09-23 20:57:34 +0200 409) ${RESOLVE_BTFIDS} vmlinux
c9a0f3b85e09d (Jiri Olsa 2020-07-11 23:53:24 +0200 410) fi
c9a0f3b85e09d (Jiri Olsa 2020-07-11 23:53:24 +0200 411)
1091670637be8 (Shile Zhang 2019-12-04 08:46:31 +0800 412) if [ -n "${CONFIG_BUILDTIME_TABLE_SORT}" ]; then
1091670637be8 (Shile Zhang 2019-12-04 08:46:31 +0800 413) info SORTTAB vmlinux
f14bf6a350dfd (Shile Zhang 2019-12-04 08:46:33 +0800 414) if ! sorttable vmlinux; then
f14bf6a350dfd (Shile Zhang 2019-12-04 08:46:33 +0800 415) echo >&2 Failed to sort kernel tables
f14bf6a350dfd (Shile Zhang 2019-12-04 08:46:33 +0800 416) exit 1
f14bf6a350dfd (Shile Zhang 2019-12-04 08:46:33 +0800 417) fi
1347a2cebcb4c (Linus Torvalds 2012-05-28 10:32:28 -0700 418) fi
1347a2cebcb4c (Linus Torvalds 2012-05-28 10:32:28 -0700 419)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 420) info SYSMAP System.map
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 421) mksysmap vmlinux System.map
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 422)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 423) # step a (see comment above)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 424) if [ -n "${CONFIG_KALLSYMS}" ]; then
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 425) mksysmap ${kallsyms_vmlinux} .tmp_System.map
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 426)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 427) if ! cmp -s System.map .tmp_System.map; then
5369f55021feb (Michal Marek 2012-07-07 23:04:40 +0200 428) echo >&2 Inconsistent kallsyms data
367e43c50d7f7 (Michal Marek 2012-08-10 11:55:11 +0200 429) echo >&2 Try "make KALLSYMS_EXTRA_PASS=1" as a workaround
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 430) exit 1
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 431) fi
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 432) fi
0b956e204132c (Rasmus Villemoes 2021-03-05 11:02:12 +0100 433)
0b956e204132c (Rasmus Villemoes 2021-03-05 11:02:12 +0100 434) # For fixdep
0b956e204132c (Rasmus Villemoes 2021-03-05 11:02:12 +0100 435) echo "vmlinux: $0" > .vmlinux.d
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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