463cde4030
redzone below the stack pointer for scratch space and requires interrupt and signal frames to avoid overwriting it. However, EFI uses the Windows ABI which does not support this. As a result, interrupt handlers in EFI push their interrupt frames directly on top of the stack pointer. If the compiler used the red zone in a function in the EFI loader, then a device interrupt that occurred while that function was running could trash its local variables. In practice this happens fairly reliable when using gzipfs as an interrupt during decompression can trash the local variables in the inflate_table() function resulting in corrupted output or hangs. Fix this by disabling the redzone for amd64 EFI binaries. This requires building not only the loader but any libraries used by the loader without redzone support. Thanks to Jilles for pointing me at the redzone once I found the stack corruption. Differential Revision: https://reviews.freebsd.org/D2054 Reviewed by: imp MFC after: 2 weeks Sponsored by: Cisco Systems, Inc.
162 lines
4.4 KiB
Makefile
162 lines
4.4 KiB
Makefile
# $FreeBSD$
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# Originally from $NetBSD: Makefile,v 1.21 1997/10/26 22:08:38 lukem Exp $
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#
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# Notes:
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# - We don't use the libc strerror/sys_errlist because the string table is
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# quite large.
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#
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MK_PROFILE= no
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MK_SSP= no
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.include <src.opts.mk>
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LIB= stand
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NO_PIC=
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INCS= stand.h
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MAN= libstand.3
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WARNS?= 0
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CFLAGS+= -ffreestanding -Wformat
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CFLAGS+= -I${.CURDIR}
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.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
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CFLAGS+= -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 -msoft-float
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.endif
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.if ${MACHINE_CPUARCH} == "i386"
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CFLAGS.gcc+= -mpreferred-stack-boundary=2
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.endif
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.if ${MACHINE_CPUARCH} == "amd64"
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CFLAGS+= -fPIC -mno-red-zone
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.endif
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.if ${MACHINE} == "pc98"
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CFLAGS+= -Os
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.endif
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.if ${MACHINE_CPUARCH} == "powerpc"
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CFLAGS+= -msoft-float -D_STANDALONE -DNETIF_DEBUG
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.endif
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.if ${MACHINE_CPUARCH} == "arm"
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CFLAGS+= -msoft-float -D_STANDALONE
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.endif
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.if ${MACHINE_CPUARCH} == "mips"
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CFLAGS+= -G0 -fno-pic -mno-abicalls
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.endif
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# standalone components and stuff we have modified locally
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SRCS+= gzguts.h zutil.h __main.c assert.c bcd.c bswap.c environment.c getopt.c gets.c \
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globals.c pager.c printf.c strdup.c strerror.c strtol.c strtoul.c random.c \
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sbrk.c twiddle.c zalloc.c zalloc_malloc.c
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# private (pruned) versions of libc string functions
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SRCS+= strcasecmp.c
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.PATH: ${.CURDIR}/../libc/net
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SRCS+= ntoh.c
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# string functions from libc
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.PATH: ${.CURDIR}/../libc/string
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SRCS+= bcmp.c bcopy.c bzero.c ffs.c memccpy.c memchr.c memcmp.c memcpy.c \
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memmove.c memset.c qdivrem.c strcat.c strchr.c strcmp.c strcpy.c \
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strcspn.c strlen.c strncat.c strncmp.c strncpy.c strpbrk.c \
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strrchr.c strsep.c strspn.c strstr.c strtok.c swab.c
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.if ${MACHINE_CPUARCH} == "arm"
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.PATH: ${.CURDIR}/../libc/arm/gen
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# Compiler support functions
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.PATH: ${.CURDIR}/../../contrib/compiler-rt/lib/builtins/
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# __clzsi2 and ctzsi2 for various builtin functions
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SRCS+= clzsi2.c ctzsi2.c
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# Divide and modulus functions called by the compiler
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SRCS+= divmoddi4.c divmodsi4.c divdi3.c divsi3.c moddi3.c modsi3.c
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SRCS+= udivmoddi4.c udivmodsi4.c udivdi3.c udivsi3.c umoddi3.c umodsi3.c
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.PATH: ${.CURDIR}/../../contrib/compiler-rt/lib/builtins/arm/
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SRCS+= aeabi_idivmod.S aeabi_ldivmod.S aeabi_uidivmod.S aeabi_uldivmod.S
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SRCS+= aeabi_memcmp.S aeabi_memcpy.S aeabi_memmove.S aeabi_memset.S
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.endif
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.if ${MACHINE_CPUARCH} == "powerpc"
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.PATH: ${.CURDIR}/../libc/quad
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SRCS+= ashldi3.c ashrdi3.c
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SRCS+= syncicache.c
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.endif
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# uuid functions from libc
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.PATH: ${.CURDIR}/../libc/uuid
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SRCS+= uuid_equal.c uuid_is_nil.c
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# _setjmp/_longjmp
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.PATH: ${.CURDIR}/${MACHINE_CPUARCH}
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SRCS+= _setjmp.S
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# decompression functionality from libbz2
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# NOTE: to actually test this functionality after libbz2 upgrade compile
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# loader(8) with LOADER_BZIP2_SUPPORT defined
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.PATH: ${.CURDIR}/../../contrib/bzip2
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CFLAGS+= -DBZ_NO_STDIO -DBZ_NO_COMPRESS
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SRCS+= libstand_bzlib_private.h
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.for file in bzlib.c crctable.c decompress.c huffman.c randtable.c
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SRCS+= _${file}
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CLEANFILES+= _${file}
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_${file}: ${file}
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sed "s|bzlib_private\.h|libstand_bzlib_private.h|" ${.ALLSRC} > ${.TARGET}
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.endfor
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CLEANFILES+= libstand_bzlib_private.h
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libstand_bzlib_private.h: bzlib_private.h
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sed -e 's|<stdlib.h>|"stand.h"|' \
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${.ALLSRC} > ${.TARGET}
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# decompression functionality from libz
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.PATH: ${.CURDIR}/../libz
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CFLAGS+=-DHAVE_MEMCPY -I${.CURDIR}/../libz
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SRCS+= adler32.c crc32.c libstand_zutil.h libstand_gzguts.h
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.for file in infback.c inffast.c inflate.c inftrees.c zutil.c
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SRCS+= _${file}
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CLEANFILES+= _${file}
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_${file}: ${file}
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sed -e "s|zutil\.h|libstand_zutil.h|" \
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-e "s|gzguts\.h|libstand_gzguts.h|" \
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${.ALLSRC} > ${.TARGET}
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.endfor
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# depend on stand.h being able to be included multiple times
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.for file in zutil.h gzguts.h
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CLEANFILES+= libstand_${file}
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libstand_${file}: ${file}
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sed -e 's|<fcntl.h>|"stand.h"|' \
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-e 's|<stddef.h>|"stand.h"|' \
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-e 's|<string.h>|"stand.h"|' \
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-e 's|<stdio.h>|"stand.h"|' \
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-e 's|<stdlib.h>|"stand.h"|' \
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${.ALLSRC} > ${.TARGET}
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.endfor
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# io routines
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SRCS+= closeall.c dev.c ioctl.c nullfs.c stat.c \
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fstat.c close.c lseek.c open.c read.c write.c readdir.c
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# network routines
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SRCS+= arp.c ether.c inet_ntoa.c in_cksum.c net.c udp.c netif.c rpc.c
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# network info services:
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SRCS+= bootp.c rarp.c bootparam.c
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# boot filesystems
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SRCS+= ufs.c nfs.c cd9660.c tftp.c gzipfs.c bzipfs.c
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SRCS+= dosfs.c ext2fs.c
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SRCS+= splitfs.c
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SRCS+= pkgfs.c
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.if ${MK_NAND} != "no"
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SRCS+= nandfs.c
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.endif
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.include <bsd.lib.mk>
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