bsd.kmodule.mk revision 1.83
1 # $NetBSD: bsd.kmodule.mk,v 1.83 2023/06/03 08:52:56 lukem Exp $ 2 3 # We are not building this with PIE 4 MKPIE=no 5 6 .include <bsd.init.mk> 7 .include <bsd.klinks.mk> 8 9 .if ${MKCTF:Uno} == "yes" 10 CFLAGS+= -g 11 # Only need symbols for ctf, strip them after converting to CTF 12 CTFFLAGS= -L VERSION 13 CTFMFLAGS= -t -L VERSION 14 # Keep symbols if built with "-g" 15 .if !empty(COPTS:M*-g*) || ${MKDEBUG:Uno} == "yes" 16 CTFFLAGS+= -g 17 CTFMFLAGS+= -g 18 .endif 19 .endif 20 21 .include <bsd.sys.mk> 22 23 ##### Basic targets 24 realinstall: kmodinstall 25 26 KERN= $S/kern 27 MKLDSCRIPT?= no 28 29 CFLAGS+= -ffreestanding ${COPTS} 30 CPPFLAGS+= -nostdinc -I. -I${.CURDIR} -isystem $S -isystem $S/arch 31 CPPFLAGS+= -isystem ${S}/../common/include 32 CPPFLAGS+= -D_KERNEL -D_MODULE -DSYSCTL_INCLUDE_DESCR 33 CPPFLAGS+= ${${MKDTRACE:Uno} != "no" :? -DKDTRACE_HOOKS :} 34 35 CWARNFLAGS.clang+= -Wno-error=constant-conversion 36 37 # XXX until the kernel is fixed again... 38 CFLAGS+= -fno-strict-aliasing 39 CWARNFLAGS+= -Wno-pointer-sign -Wno-attributes 40 CWARNFLAGS+= -Wno-type-limits 41 CWARNFLAGS.gcc+= ${CC_WNO_ADDRESS_OF_PACKED_MEMBER} 42 CWARNFLAGS.clang+= -Wno-error=address-of-packed-member 43 44 # XXX This is a workaround for platforms that have relative relocations 45 # that, when relocated by the module loader, result in addresses that 46 # overflow the size of the relocation (e.g. R_PPC_REL24 in powerpc). 47 # The real solution to this involves generating trampolines for those 48 # relocations inside the loader and removing this workaround, as the 49 # resulting code would be much faster. 50 .if ${MACHINE_CPU} == "aarch64" 51 CFLAGS+= -march=armv8-a+nofp+nosimd 52 .elif ${MACHINE_CPU} == "arm" 53 CFLAGS+= -fno-common -fno-unwind-tables 54 .elif ${MACHINE_CPU} == "hppa" 55 CFLAGS+= -mlong-calls -mno-space-regs -mfast-indirect-calls 56 .elif ${MACHINE_CPU} == "powerpc" 57 CFLAGS+= ${${ACTIVE_CC} == "gcc":? -mlongcall :} 58 CFLAGS+= ${${ACTIVE_CC} == "gcc" && ${HAVE_GCC:U0} >= 9:? -mno-pltseq :} 59 .elif ${MACHINE_CPU} == "vax" 60 CFLAGS+= -fno-pic 61 .elif ${MACHINE_CPU} == "riscv" 62 CFLAGS+= -mcmodel=medany 63 .elif ${MACHINE_ARCH} == "mips64eb" && !defined(BSD_MK_COMPAT_FILE) 64 CFLAGS+= -mabi=64 65 AFLAGS+= -mabi=64 66 LDFLAGS+= -Wl,-m,elf64btsmip 67 .elif ${MACHINE_ARCH} == "mips64el" && !defined(BSD_MK_COMPAT_FILE) 68 CFLAGS+= -mabi=64 69 AFLAGS+= -mabi=64 70 LDFLAGS+= -Wl,-m,elf64ltsmip 71 .endif 72 73 .if ${MACHINE_CPU} == "mips" 74 # We can't use -msym32 with -mlong-calls as -msym32 forces all addresses 75 # to be 32-bit which defeats the whole purpose of long calls. 76 CFLAGS+= -mlong-calls 77 .endif 78 79 .if ${MACHINE_CPU} == "sparc64" 80 # force same memory model as rest of the kernel 81 CFLAGS+= ${${ACTIVE_CC} == "gcc":? -mcmodel=medlow :} 82 CFLAGS+= ${${ACTIVE_CC} == "clang":? -mcmodel=small :} 83 .endif 84 85 # evbppc needs some special help 86 .if ${MACHINE} == "evbppc" 87 88 . ifndef PPC_INTR_IMPL 89 PPC_INTR_IMPL=\"powerpc/intr.h\" 90 . endif 91 . ifndef PPC_PCI_MACHDEP_IMPL 92 PPC_PCI_MACHDEP_IMPL=\"powerpc/pci_machdep.h\" 93 . endif 94 CPPFLAGS+= -DPPC_INTR_IMPL=${PPC_INTR_IMPL} 95 CPPFLAGS+= -DPPC_PCI_MACHDEP_IMPL=${DPPC_PCI_MACHDEP_IMPL} 96 97 . ifdef PPC_IBM4XX 98 CPPFLAGS+= -DPPC_IBM4XX 99 . elifdef PPC_BOOKE 100 CPPFLAGS+= -DPPC_BOOKE 101 . elif ${MACHINE_ARCH} == "powerpc64" 102 CPPFLAGS+= -DPPC_OEA64 103 . else 104 CPPFLAGS+= -DPPC_OEA 105 . endif 106 107 .endif 108 109 110 _YKMSRCS= ${SRCS:M*.[ly]:C/\..$/.c/} ${YHEADER:D${SRCS:M*.y:.y=.h}} 111 DPSRCS+= ${_YKMSRCS} 112 CLEANFILES+= ${_YKMSRCS} 113 114 .if exists($S/../sys/modules/xldscripts/kmodule) 115 KMODSCRIPTSRC= $S/../sys/modules/xldscripts/kmodule 116 .else 117 KMODSCRIPTSRC= ${DESTDIR}/usr/libdata/ldscripts/kmodule 118 .endif 119 .if ${MKLDSCRIPT} == "yes" 120 KMODSCRIPT= kldscript 121 MKLDSCRIPTSH= 122 .else 123 KMODSCRIPT= ${KMODSCRIPTSRC} 124 .endif 125 126 PROG?= ${KMOD}.kmod 127 .if ${MKDEBUG:Uno} != "no" && !defined(NODEBUG) && !commands(${PROG}) && \ 128 empty(SRCS:M*.sh) 129 PROGDEBUG:= ${PROG}.debug 130 .endif 131 132 ##### Build rules 133 realall: ${PROG} ${PROGDEBUG} 134 135 OBJS+= ${SRCS:N*.h:N*.sh:R:S/$/.o/g} 136 137 ${OBJS} ${LOBJS}: ${DPSRCS} 138 139 .if ${MKLDSCRIPT} == "yes" 140 ${KMODSCRIPT}: ${KMODSCRIPTSRC} ${OBJS} $S/conf/mkldscript.sh 141 @rm -f ${.TARGET} 142 @OBJDUMP=${OBJDUMP} ${HOST_SH} $S/conf/mkldscript.sh \ 143 -t ${KMODSCRIPTSRC} ${OBJS} > ${.TARGET} 144 .endif 145 146 .if ${MACHINE_CPU} == "arm" 147 # The solution to limited branch space involves generating trampolines for 148 # those relocations while creating the module, as the resulting code will 149 # be much faster and simplifies the loader. 150 ARCHDIR= $S/modules/arch/${MACHINE_CPU} 151 ASM_H= $S/arch/${MACHINE_CPU}/include/asm.h 152 CLEANFILES+= tmp.o tmp.S ${KMOD}_tmp.o ${KMOD}_tramp.o ${KMOD}_tramp.S 153 ${KMOD}_tmp.o: ${OBJS} ${DPADD} 154 ${_MKTARGET_LINK} 155 ${LD} -r -o tmp.o ${OBJS} 156 ${LD} -r \ 157 $$(${OBJDUMP} --syms --reloc tmp.o | \ 158 ${TOOL_AWK} -f ${ARCHDIR}/kmodwrap.awk) \ 159 -o ${.TARGET} tmp.o 160 161 ${KMOD}_tramp.S: ${KMOD}_tmp.o ${ARCHDIR}/kmodtramp.awk ${ASM_H} 162 ${_MKTARGET_CREATE} 163 ${OBJDUMP} --syms --reloc ${KMOD}_tmp.o | \ 164 ${TOOL_AWK} -f ${ARCHDIR}/kmodtramp.awk \ 165 > tmp.S && \ 166 ${MV} tmp.S ${.TARGET} 167 168 ${PROG}: ${KMOD}_tmp.o ${KMOD}_tramp.o 169 ${_MKTARGET_LINK} 170 .if exists(${ARCHDIR}/kmodhide.awk) 171 ${LD} -r -Map=${.TARGET}.map \ 172 -o tmp.o ${KMOD}_tmp.o ${KMOD}_tramp.o 173 ${OBJCOPY} \ 174 $$(${NM} tmp.o | ${TOOL_AWK} -f ${ARCHDIR}/kmodhide.awk) \ 175 tmp.o ${.TARGET} && \ 176 rm tmp.o 177 .else 178 ${LD} -r -Map=${.TARGET}.map \ 179 -o ${.TARGET} ${KMOD}_tmp.o ${KMOD}_tramp.o 180 .endif 181 .else 182 ${PROG}: ${OBJS} ${DPADD} ${KMODSCRIPT} 183 ${_MKTARGET_LINK} 184 ${CC} ${LDFLAGS} -nostdlib -r -Wl,-T,${KMODSCRIPT},-d \ 185 -Wl,-Map=${.TARGET}.map \ 186 -o ${.TARGET} ${OBJS} 187 .endif 188 .if defined(CTFMERGE) 189 ${CTFMERGE} ${CTFMFLAGS} -o ${.TARGET} ${OBJS} 190 .endif 191 192 .if defined(PROGDEBUG) 193 ${PROGDEBUG}: ${PROG} 194 ${_MKTARGET_CREATE} 195 ( ${OBJCOPY} --only-keep-debug ${PROG} ${PROGDEBUG} \ 196 && ${OBJCOPY} --strip-debug -p -R .gnu_debuglink \ 197 --add-gnu-debuglink=${PROGDEBUG} ${PROG} \ 198 ) || (rm -f ${PROGDEBUG}; false) 199 .endif 200 201 ##### Install rules 202 .if !target(kmodinstall) 203 .if !defined(KMODULEDIR) 204 .if ${KERNEL_DIR:Uno} == "yes" 205 _INST_DIRS= /netbsd 206 _INST_DIRS+= /netbsd/modules 207 KMODULEDIR= /netbsd/modules/${KMOD} 208 .else 209 # Ensure these are recorded properly in METALOG on unprived installes: 210 _OSRELEASE!= ${HOST_SH} $S/conf/osrelease.sh -k 211 KMODULEARCHDIR?= ${MACHINE} 212 _INST_DIRS= /stand/${KMODULEARCHDIR} 213 _INST_DIRS+= /stand/${KMODULEARCHDIR}/${_OSRELEASE} 214 _INST_DIRS+= /stand/${KMODULEARCHDIR}/${_OSRELEASE}/modules 215 KMODULEDIR= /stand/${KMODULEARCHDIR}/${_OSRELEASE}/modules/${KMOD} 216 .endif 217 .endif 218 219 _INST_DIRS+= ${KMODULEDIR} 220 _PROG:= ${DESTDIR}${KMODULEDIR}/${PROG} # installed path 221 222 .if defined(PROGDEBUG) 223 .for i in ${_INST_DIRS} 224 _DEBUG_INST_DIRS += ${DEBUGDIR}${i} 225 .endfor 226 _INST_DIRS += ${_DEBUG_INST_DIRS} 227 _PROGDEBUG:= ${DESTDIR}${DEBUGDIR}${KMODULEDIR}/${PROG}.debug 228 .endif 229 230 .for _P P in ${_PROG} ${PROG} ${_PROGDEBUG} ${PROGDEBUG} 231 .if ${MKUPDATE} == "no" 232 ${_P}! ${P} # install rule 233 .if !defined(BUILD) && !make(all) && !make(${P}) 234 ${_P}! .MADE # no build at install 235 .endif 236 .else 237 ${_P}: ${P} # install rule 238 .if !defined(BUILD) && !make(all) && !make(${P}) 239 ${_P}: .MADE # no build at install 240 .endif 241 .endif 242 ${_MKTARGET_INSTALL} 243 dirs=${_INST_DIRS:Q}; \ 244 for d in $$dirs; do \ 245 ${INSTALL_DIR} ${DESTDIR}$$d; \ 246 done 247 ${INSTALL_FILE} -o ${KMODULEOWN} -g ${KMODULEGRP} -m ${KMODULEMODE} \ 248 ${.ALLSRC} ${.TARGET} 249 250 kmodinstall:: ${_P} 251 .PHONY: kmodinstall 252 .PRECIOUS: ${_P} # keep if install fails 253 .endfor 254 255 .undef _PPROG 256 .undef _PPROGDEBUG 257 .endif # !target(kmodinstall) 258 259 ##### Clean rules 260 CLEANFILES+= a.out [Ee]rrs mklog core *.core ${PROG} ${OBJS} ${LOBJS} 261 CLEANFILES+= ${PROGDEBUG} 262 CLEANFILES+= ${PROG}.map 263 .if ${MKLDSCRIPT} == "yes" 264 CLEANFILES+= kldscript 265 .endif 266 267 ##### Custom rules 268 lint: ${LOBJS} 269 .if defined(LOBJS) && !empty(LOBJS) 270 ${LINT} ${LINTFLAGS} ${LDFLAGS:C/-L[ ]*/-L/Wg:M-L*} ${LOBJS} ${LDADD} 271 .endif 272 273 ##### Pull in related .mk logic 274 LINKSOWN?= ${KMODULEOWN} 275 LINKSGRP?= ${KMODULEGRP} 276 LINKSMODE?= ${KMODULEMODE} 277 .include <bsd.man.mk> 278 .include <bsd.links.mk> 279 .include <bsd.dep.mk> 280 .include <bsd.clean.mk> 281 282 .-include "$S/arch/${MACHINE_CPU}/include/Makefile.inc" 283 .-include "$S/arch/${MACHINE}/include/Makefile.inc" 284
Indexes created Sun Oct 26 20:09:54 GMT 2025