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#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
# Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
#
BASEPLAT = amd64
# Object lists are organized into primary (most frequently used code) and
# secondary lists (less frequently used code).
P_COMOBJS= debugdata.o \
analyze.o elf.o external.o globals.o \
malloc.o paths.o setup.o util.o \
dlfcns.o config_elf.o locale.o tsort.o \
remove.o move.o tls.o cap.o
S_COMOBJS= debug.o audit.o object.o
G_MACHOBJS= doreloc.o
P_MACHOBJS= amd64_elf.o _setup.o dlamd64getunwind.o
CP_MACHOBJS=
S_MACHOBJS=
P_ASOBJS= boot.o boot_elf.o caller.o
S_ASOBJS=
CRTSRCS= ../../../../lib/crt/amd64
CRTI= pics/crti.o
CRTN= pics/crtn.o
CRTS= $(CRTI) $(CRTN)
include $(SRC)/cmd/sgs/rtld/Makefile.com
include $(SRC)/lib/Makefile.lib.64
MAPFILE-ORDER = ../common/mapfile-order-gcc
# Add any machine specific flags.
ASFLAGS += -D__amd64 -D_ELF64 $(amd64_ASFLAGS)
ADBGENFLAGS += -mlp64
ADBSUB= $(ADBSUB64)
CPPFLAGS += -D_ELF64
# Hammerhead: 64-bit only - runtime linker at flattened path
SONAME= /lib/ld.so.1
SGSMSGTARG += $(SGSMSGINTEL) $(SGSMSGINTEL64) $(SGSMSG64)
LDLIB = -L ../../libld/$(MACH64)
RTLDLIB = -L ../../librtld/$(MACH64)
CPICLIB = $(CPICLIB64)
LDDBGLIBDIR = $(LDDBGLIBDIR64)
CONVLIBDIR = $(CONVLIBDIR64)
.KEEP_STATE:
all: $(RTLD)
install: all $(ROOTDYNLIB64) $(ROOTCOMPATLINKS) $(ROOTCOMPATLINKS64)
adbmacros: adb .WAIT $(ADBSCRIPTS)
adbinstall: adbmacros .WAIT $(ROOTADB64)
include $(SRC)/cmd/sgs/rtld/Makefile.targ
include $(SRC)/Makefile.master.64
# Hammerhead: ld.so.1 MUST be linked by illumos ld (sunld), not GNU ld.
# GNU ld produces ELFOSABI_NONE, missing PT_SUNWDTRACE/PT_SUNW_UNWIND program
# headers, and wrong segment alignment — the kernel cannot properly map the
# result. Override LD after Makefile.master.64 (which resets LD=$(LD64)).
#
# `unexport LD_ALTEXEC` does NOT reliably prevent sunld from seeing the
# variable in recipe subshells (gmake may still pass it through). When
# LD_ALTEXEC is set to gnu-ld-wrapper, sunld re-execs that wrapper,
# which silently ignores `-z dtrace=dtrace_data` — the resulting
# ld.so.1 has PT_SUNWDTRACE with p_memsz=0, and the kernel's
# dtrace_safe_phdr() rejects it with silent ENOEXEC when exec'ing any
# binary that uses ld.so.1 as its interpreter (including /sbin/init).
#
# Use the same wrapper script kernel linking uses: a single-token path
# that unsets LD_ALTEXEC before exec'ing /usr/bin/sunld. See
# `usr/src/tools/scripts/sunld-kernel.sh`.
unexport LD_ALTEXEC
LD = $(SRC)/tools/scripts/sunld-kernel.sh
GSHARED = -G
# Redefine DYNFLAGS in illumos ld native syntax (no -Wl, prefix).
# The Makefile.targ link rule calls $(LD) directly, not $(CC).
# Note: illumos ld requires space between -z and the keyword.
DYNFLAGS = -h $(SONAME) -z textoff -z defs \
$(MAPFILES:%=-M %) $(MAPFILE.PGA:%=-M %) \
-i -e _rt_boot $(VERSREF) $(ZNODLOPEN) \
$(ZINTERPOSE) -z dtrace=dtrace_data '-R$$ORIGIN' \
-Bsymbolic
ZNODLOPEN = -z nodlopen
ZINTERPOSE = -z interpose
# Hammerhead: GNU strip corrupts ld.so.1 in two places.
#
# 1. POST_PROCESS_SO runs STRIP_STABS ($(STRIP) -x $@) after the link
# rule in Makefile.targ. On Hammerhead $(STRIP) is GNU strip.
# 2. INS.file in Makefile.master passes `-s` to install(1), which
# invokes GNU strip again at install time.
#
# GNU strip handles the Solaris PT_SUNWDTRACE program header
# incorrectly:
#
# - sunld with `-z dtrace=dtrace_data` creates a PT_SUNWDTRACE
# program header with p_filesz=0 (NOBITS — dtrace_data is in
# .bss), p_memsz=0x40 (= FASTTRAP_SUNWDTRACE_SIZE), p_vaddr set to
# the symbol address.
# - GNU strip sees p_filesz=0 and 'optimizes' by zeroing p_memsz as
# well, and drops the `dtrace_data` symbol entirely.
# - The kernel's dtrace_safe_phdr() at elf.c:123 rejects any
# interpreter whose PT_SUNWDTRACE p_memsz < PT_SUNWDTRACE_SIZE (64).
# - Result: every exec() of a dynamic binary that uses ld.so.1 as
# its interpreter fails with ENOEXEC (including /sbin/init).
#
# Disable both strip calls. The rest of POST_PROCESS_SO (mcs -d,
# elfsign) still runs. ld.so.1 ends up larger (~1.4 MB unstripped vs
# ~474 KB stripped) but exec works.
STRIP_STABS = :
INS.file = $(RM) $@; $(INS) -m $(FILEMODE) -f $(@D) $<
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