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Gold linker support for entire source tree

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This commit is contained in:
Anton Kuijsten 2013-06-11 19:08:05 +00:00 committed by Lionel Sambuc
parent 3d257f8073
commit 1d71e39b73
36 changed files with 4653 additions and 12 deletions
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231
external/gpl3/binutils/ldscripts/elf_earm_minix.x vendored Normal file
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/* Default linker script, for normal executables */
OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
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OUTPUT_ARCH(arm)
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192
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191
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133
external/gpl3/binutils/ldscripts/elf_i386_minix.xu vendored Normal file
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200
external/gpl3/binutils/ldscripts/elf_i386_minix.xw vendored Normal file
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@ -0,0 +1,200 @@
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6
kernel/Makefile
View file

@ -15,7 +15,13 @@ LDADD+= -ltimers -lsys -lexec -lminlib -L/usr/lib
LINKERSCRIPT= ${.CURDIR}/arch/${MACHINE_ARCH}/kernel.lds
.if ${HAVE_GOLD:U} != ""
GOLDLINKERSCRIPT=${LINKERSCRIPT}
LDFLAGS+= -Wl,--allow-multiple-definition
CFLAGS += -fno-common
.else
LDFLAGS+= -T ${LINKERSCRIPT}
.endif
LDFLAGS+= -nostdlib
CFLAGS += -fno-stack-protector

4
kernel/arch/earm/kernel.lds
View file

@ -25,9 +25,9 @@ SECTIONS
. += _kern_offset;
. = ALIGN(4096); usermapped_start = .;
.usermapped_glo : AT(ADDR(.usermapped_glo) - _kern_offset) { usermapped_glo*.o }
.usermapped_glo : AT(ADDR(.usermapped_glo) - _kern_offset) { usermapped_glo*.o(*) }
. = ALIGN(4096); usermapped_nonglo_start = .;
.usermapped : AT(ADDR(.usermapped) - _kern_offset) { usermapped_*.o }
.usermapped : AT(ADDR(.usermapped) - _kern_offset) { usermapped_*.o(*) }
. = ALIGN(4096); usermapped_end = .;
.text : AT(ADDR(.text) - _kern_offset) { *(.text*) }
_etext = .;

4
kernel/arch/i386/kernel.lds
View file

@ -22,9 +22,9 @@ SECTIONS
. += _kern_offset;
. = ALIGN(4096); usermapped_start = .;
.usermapped_glo : AT(ADDR(.usermapped_glo) - _kern_offset) { usermapped_glo*.o }
.usermapped_glo : AT(ADDR(.usermapped_glo) - _kern_offset) { usermapped_glo*.o(*) }
. = ALIGN(4096); usermapped_nonglo_start = .;
.usermapped : AT(ADDR(.usermapped) - _kern_offset) { usermapped_*.o }
.usermapped : AT(ADDR(.usermapped) - _kern_offset) { usermapped_*.o(*) }
. = ALIGN(4096); usermapped_end = .;
.text : AT(ADDR(.text) - _kern_offset) { *(.text*) }
.data ALIGN(4096) : AT(ADDR(.data) - _kern_offset) { *(.data .rodata* ) }

2
lib/csu/Makefile
View file

@ -2,6 +2,8 @@
.include <bsd.own.mk>
LD+= ${${HAVE_GOLD:Uno} != "no":? --script ${LDS_RELOC}:}
.if ${USE_COMPILERCRTSTUFF} != "yes"
.if defined(CSU_MACHINE_ARCH)

4
libexec/ld.elf_so/Makefile
View file

@ -45,7 +45,11 @@ M= ${.CURDIR}/arch/${ARCHSUBDIR}
LDFLAGS+= ${${ACTIVE_CC} == "clang":? -Wl,-Bsymbolic : -symbolic} \
-shared -nostartfiles -nodefaultlibs
.if defined(__MINIX) && ${HAVE_GOLD:U} != ""
LDFLAGS+= -Wl,--script ${LDS_SHARED_LIB}
.else
LDFLAGS+= -Wl,-static
.endif
LDFLAGS+= -Wl,--warn-shared-textrel
COPTS+= -fvisibility=hidden

11
libexec/ld.elf_so/arch/i386/rtld_start.S
View file

@ -46,6 +46,17 @@
leal _DYNAMIC-1b(%edx),%ecx # &_DYNAMIC
movl %ecx,%ebx
subl _GLOBAL_OFFSET_TABLE_-1b(%edx),%ebx
#ifdef HAVE_GOLD
/* Adjust the offset when using the gold linker, because it's off.
* Using '_DYNAMIC' this way produces the warning
* 'shared library text segment is not shareable', produced by '--warn-shared-textrel'
* to avoid the warning, add a '_MY_DYNAMIC = .;' before the dynamic section in the
* linkerscript that is used, and replace '_DYNAMIC' with '_MY_DYNAMIC' here.
* However, this way, you end up with a custom linker script that you have to maintain.
*/
leal _DYNAMIC,%eax
subl %eax,%ebx
#endif
pushl %ebx # relocbase
pushl %ecx # &_DYNAMIC

2
libexec/ld.elf_so/rtld.c
View file

@ -344,7 +344,7 @@ _rtld_init(caddr_t mapbase, caddr_t relocbase, const char *execname)
#else
_rtld_relocate_plt_objects(&_rtld_objself);
#endif
#if !defined(__mips__) && !defined(__hppa__)
#if !defined(__mips__) && !defined(__hppa__) && !defined(HAVE_GOLD)
assert(!_rtld_objself.pltgot);
#endif
#if !defined(__arm__) && !defined(__mips__) && !defined(__sh__)

3
share/mk/bsd.lib.mk
View file

@ -193,6 +193,9 @@ MKSHLIBOBJS= no
SHLIB_SOVERSION= ${SHLIB_MAJOR}
SHLIB_SHFLAGS= -Wl,-soname,${_LIB_PREFIX}${LIB}.so.${SHLIB_SOVERSION}
SHLIB_SHFLAGS+= -Wl,--warn-shared-textrel
.if defined(__MINIX)
SHLIB_SHFLAGS+= ${${HAVE_GOLD:Uno} != "no":? -Wl,--script,${LDS_SHARED_LIB}:}
.endif # defined(__MINIX)
SHLIB_LDSTARTFILE?= ${_GCC_CRTI} ${_GCC_CRTBEGINS}
SHLIB_LDENDFILE?= ${_GCC_CRTENDS} ${_GCC_CRTN}

36
share/mk/bsd.own.mk
View file

@ -26,9 +26,6 @@ MKBINUTILS:= no
MKGDB:= no
MKGCC?= no
# LSC To check if works
#DESTDIR?= /usr/destdir.${MACHINE_ARCH}
# LSC MINIX SMP Support?
.ifdef CONFIG_SMP
SMP_FLAGS += -DCONFIG_SMP
@ -42,9 +39,27 @@ CPPFLAGS+= ${SMP_FLAGS}
__uname_s!= uname -s
.if ${__uname_s:Uunknown} == "Minix"
USETOOLS?= never
. if ${USETOOLS:Uno} != "yes" && ${HAVE_LLVM:U} == ""
HAVE_LLVM!= clang --version | grep version | cut -d' ' -f 3
. if ${USETOOLS:Uno} != "yes"
. if ${_HAVE_LLVM:U} == ""
_HAVE_LLVM!= (exec 2>&1; clang --version || echo "")
_HAVE_LLVM:= ${_HAVE_LLVM:M[0-9]\.[0-9]}
. if ${_HAVE_LLVM} != ""
HAVE_LLVM?= ${_HAVE_LLVM}
. endif
. endif # ${_HAVE_LLVM:U} == ""
. if ${_HAVE_GOLD:U} == ""
_HAVE_GOLD!= (exec 2>&1; ld --version || echo "")
_GOLD_MATCH:=${_HAVE_GOLD:Mgold}
_HAVE_GOLD:= ${_HAVE_GOLD:M[0-9]\.[0-9][0-9]}
. if ${_GOLD_MATCH} != "" && ${_HAVE_GOLD} != ""
HAVE_GOLD?= ${_HAVE_GOLD}
CFLAGS+= -DHAVE_GOLD=${_HAVE_GOLD}
AFLAGS+= -DHAVE_GOLD=${_HAVE_GOLD}
. endif
. endif # ${_HAVE_GOLD:U} == ""
. endif # ${USETOOLS:Uno} != "yes"
. if !defined(HOSTPROG) && !defined(HOSTLIB)
# LSC FIXME: Override MACHINE as the native minix host make command will set
# it to i686.
@ -53,6 +68,17 @@ MACHINE:= i386
. endif
. endif # !defined(HOSTPROG) && !defined(HOSTLIB)
.endif # __uname_s == "Minix"
#
# linker script files that have to be specified explicitely for the gold linker
#
LDS_PATH= ${NETBSDSRCDIR}/external/gpl3/binutils/ldscripts
LDS_STATIC_BIN= ${LDS_PATH}/elf_${MACHINE_ARCH}_minix.xc
LDS_DYNAMIC_BIN= ${LDS_PATH}/elf_${MACHINE_ARCH}_minix.xc
LDS_RELOC= ${LDS_PATH}/elf_${MACHINE_ARCH}_minix.xr
LDS_SHARED_LIB= ${LDS_PATH}/elf_${MACHINE_ARCH}_minix.xsc
LDS_N= ${LDS_PATH}/elf_${MACHINE_ARCH}_minix.xbn
.endif # defined(__MINIX)
MAKECONF?= /etc/mk.conf

14
share/mk/bsd.prog.mk
View file

@ -317,6 +317,20 @@ _CCLINK.${_P}= ${CXX} ${_CCLINKFLAGS}
# Language-independent definitions.
.for _P in ${PROGS} ${PROGS_CXX} # {
.if defined(__MINIX) && ${HAVE_GOLD:U} != ""
. if ${LD_STATIC:U} != "-static"
GOLDLINKERSCRIPT?= ${LDS_DYNAMIC_BIN}
. else
GOLDLINKERSCRIPT?= ${LDS_STATIC_BIN}
. endif
GOLDLINKERSCRIPT.${_P}?= ${GOLDLINKERSCRIPT}
. if ${GOLDLINKERSCRIPT.${_P}:U} != ""
LDFLAGS.${_P}:=-Wl,--script,${GOLDLINKERSCRIPT.${_P}} ${LDFLAGS.${_P}}
. endif
.endif # defined(__MINIX) && ${HAVE_GOLD:U} == ""
BINDIR.${_P}?= ${BINDIR}
PROGNAME.${_P}?= ${_P}

4
sys/arch/i386/stand/boot/Makefile.boot
View file

@ -121,6 +121,10 @@ KERN_AS= library
.include "${S}/lib/libkern/Makefile.inc"
LIBKERN= ${KERNLIB}
.else
# When using gold linker, specify the linker script
GOLDLINKERSCRIPT?= ${LDS_N}
# use MINIX minc
LIBKERN= ${DESTDIR}/usr/lib/libminc.a
.endif

4
sys/arch/i386/stand/bootxx/Makefile.bootxx
View file

@ -126,6 +126,10 @@ KERN_AS= library
.include "${S}/lib/libkern/Makefile.inc"
LIBKERN= ${KERNLIB}
.else
# When using gold linker, specify the linker script
GOLDLINKERSCRIPT?= ${LDS_N}
# use MINIX minc
LIBKERN= ${DESTDIR}/usr/lib/libminc.a
.endif

4
test/Makefile
View file

@ -77,6 +77,10 @@ SCRIPTS+= run testinterp.sh testsh1.sh testsh2.sh
# executables is tested
LDSTATIC= -dynamic
# use the shared linkerscript for mod when using the gold linker
GOLDLINKERSCRIPT.mod?= ${${HAVE_GOLD:Uno} != "no":? ${LDS_SHARED_LIB} :}
GOLDLINKERSCRIPT=
# Add test that must be linked dynamically, and its dynamically loaded
# module
PROGS+= test63 mod