1# 2# CDDL HEADER START 3# 4# The contents of this file are subject to the terms of the 5# Common Development and Distribution License (the "License"). 6# You may not use this file except in compliance with the License. 7# 8# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9# or http://www.opensolaris.org/os/licensing. 10# See the License for the specific language governing permissions 11# and limitations under the License. 12# 13# When distributing Covered Code, include this CDDL HEADER in each 14# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15# If applicable, add the following below this CDDL HEADER, with the 16# fields enclosed by brackets "[]" replaced with your own identifying 17# information: Portions Copyright [yyyy] [name of copyright owner] 18# 19# CDDL HEADER END 20# 21# 22# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved. 23# Copyright (c) 2016 by Delphix. All rights reserved. 24# Copyright 2020 Joyent, Inc. 25# 26 27LIBRARY = s10_brand.a 28VERS = .1 29COBJS = s10_brand.o s10_deleted.o s10_signal.o 30ASOBJS = crt.o handler.o runexe.o brand_util.o 31OBJECTS = $(COBJS) 32 33include ../../Makefile.s10 34include $(SRC)/lib/Makefile.lib 35 36SRCDIR = ../common 37UTSBASE = $(SRC)/uts 38 39LIBS = $(DYNLIB) 40CSRCS = $(COBJS:%o=../common/%c) 41SHAREDOBJS = $(ASOBJS:%o=$(ISAOBJDIR)/%o) 42SRCS = $(CSRCS) 43 44# 45# Note that the architecture specific makefiles MUST update DYNFLAGS to 46# explicitly specify an interpreter for the brand emulation library so that we 47# use /lib/ld.so.1 or /lib/64/ld.so.1, which in a s10 zone is the Solaris 10 48# linker. This is different from some other brands where the linker that is 49# used is the native system linker (/.SUNWnative/.../ld.so.1). We have to do 50# this because the linker has a very incestuous relationship with libc and we 51# don't want to use the native linker with the s10 version of libc. (This may 52# come as a surprise to the reader, but when our library is loaded it get's 53# linked against the s10 version of libc.) Although the linker interfaces are 54# normally stable, there are examples, such as with the solaris8 brand, where 55# we could not combine the brand's libc with the native linker. Since we want 56# to run in a known configuration, we use the S10 libc/linker combination. 57# 58# There is one more non-obvious side effect of using the s10 linker that 59# should be mentioned. Since the linker is used to setup processes before 60# libc is loaded, it makes system calls directly (ie avoiding libc), and 61# it makes these system calls before our library has been initialized. 62# Since our library hasn't been initialized yet, there's no way for us 63# to intercept and emulate any of those system calls. So if any of those 64# system calls ever change in the native code such that they break the s10 65# linker then we're kinda screwed and will need to re-visit the current 66# solution. (The likely solution then will probably be to start using the 67# native linker with our brand emulation library.) 68# 69# Note that we make sure to link our brand emulation library 70# libmapmalloc. This is required because in most cases there will be two 71# copies of libc in the same process and we don't want them to fight over 72# the heap. So for our brand library we link against libmapmalloc so that 73# if we (our or copy of libc) try to allocate any memory it will be done 74# via mmap() instead of brk(). 75# 76CPPFLAGS += -D_REENTRANT -U_ASM \ 77 -I. -I$(BRAND_SHARED)/brand/sys -I../sys \ 78 -I$(UTSBASE)/common/brand/solaris10 \ 79 -I$(SRC)/uts/common/fs/zfs 80CFLAGS += $(CCVERBOSE) 81# Needed to handle zfs include files 82CSTD= $(CSTD_GNU99) 83DYNFLAGS += $(DYNFLAGS_$(CLASS)) 84DYNFLAGS += $(BLOCAL) $(ZNOVERSION) -Wl,-e_start 85LDLIBS += -lmapmalloc -lc 86 87# 88# Disable stack protection as we're running in an s10 context. 89# 90STACKPROTECT = none 91 92CERRWARN += $(CNOWARN_UNINIT) 93 94$(LIBS):= PICS += $(SHAREDOBJS) 95 96.KEEP_STATE: 97 98all: $(LIBS) 99 100include $(SRC)/lib/Makefile.targ 101