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| author | marcel <marcel@FreeBSD.org> | 2011-03-22 17:19:35 +0000 |
|---|---|---|
| committer | marcel <marcel@FreeBSD.org> | 2011-03-22 17:19:35 +0000 |
| commit | 740a8e4e1df03fb0c905406ade3ef033885d0467 (patch) | |
| tree | 13b1d2f8ec17a8b18ae223695835a52bfa6bc9d8 /gnu | |
| parent | d43623eb141956b19ec3c5172eea78b9e17ef3ef (diff) | |
| download | FreeBSD-src-740a8e4e1df03fb0c905406ade3ef033885d0467.zip FreeBSD-src-740a8e4e1df03fb0c905406ade3ef033885d0467.tar.gz | |
Change the load address from offset 0 in region 1 to offset 4G in region 0.
This (almost) gives us the address space back (at the bottom) that we lost
at the top.
Region 0 has traditionally been reserved for IA-32 emulation, which has not
been of great interest. By starting 64-bit processes at the 4G boundary we
at least preserve some of the advantages:
1. Any invalid pointer cast (from int to pointer and back) will still
always fail and not only when more than 4GB of memory is in use.
2. Memory sharing between 64-bit and 32-bit processes is still possibly
by using addresses < 4G.
Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/usr.bin/binutils/ld/Makefile.ia64 | 5 | ||||
| -rw-r--r-- | gnu/usr.bin/binutils/ld/elf64_ia64_fbsd.sh | 3 |
2 files changed, 5 insertions, 3 deletions
diff --git a/gnu/usr.bin/binutils/ld/Makefile.ia64 b/gnu/usr.bin/binutils/ld/Makefile.ia64 index 20b0a2b..50a7bb6 100644 --- a/gnu/usr.bin/binutils/ld/Makefile.ia64 +++ b/gnu/usr.bin/binutils/ld/Makefile.ia64 @@ -4,12 +4,13 @@ NATIVE_EMULATION= elf64_ia64_fbsd SRCS+= e${NATIVE_EMULATION}.c CLEANFILES+= e${NATIVE_EMULATION}.c -e${NATIVE_EMULATION}.c: emulparams/${NATIVE_EMULATION}.sh emultempl/elf32.em \ +e${NATIVE_EMULATION}.c: ${.CURDIR}/${NATIVE_EMULATION}.sh emultempl/elf32.em \ scripttempl/elf.sc genscripts.sh stringify.sed sh ${.CURDIR}/genscripts.sh ${SRCDIR}/ld ${LIBSEARCHPATH} \ ${TOOLS_PREFIX}/usr \ ${HOST} ${TARGET_TUPLE} ${TARGET_TUPLE} \ - ${NATIVE_EMULATION} "" no ${NATIVE_EMULATION} ${TARGET_TUPLE} + ${NATIVE_EMULATION} "" no ${NATIVE_EMULATION} ${TARGET_TUPLE} \ + ${.CURDIR}/${NATIVE_EMULATION}.sh #XXX EMS+= eelf64_ia64 diff --git a/gnu/usr.bin/binutils/ld/elf64_ia64_fbsd.sh b/gnu/usr.bin/binutils/ld/elf64_ia64_fbsd.sh index a7e2675..213b494 100644 --- a/gnu/usr.bin/binutils/ld/elf64_ia64_fbsd.sh +++ b/gnu/usr.bin/binutils/ld/elf64_ia64_fbsd.sh @@ -1,5 +1,6 @@ +# $FreeBSD$ . ${srcdir}/emulparams/elf64_ia64.sh -TEXT_START_ADDR="0x2000000000000000" +TEXT_START_ADDR="0x0000000100000000" unset DATA_ADDR unset SMALL_DATA_CTOR unset SMALL_DATA_DTOR |
