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[PATCH/AARCH64 6/6] Support ILP32 multi-lib
- From: Andrew Pinski <pinskia at gmail dot com>
- To: gcc-patches at gcc dot gnu dot org
- To: gcc-patches at gcc dot gnu dot org
- Cc: Andrew Pinski <apinski at cavium dot com>
- Date: Tue, 3 Dec 2013 13:24:52 -0800
- Subject: [PATCH/AARCH64 6/6] Support ILP32 multi-lib
- Authentication-results: sourceware.org; auth=none
- References: <1386105892-2379-1-git-send-email-apinski at cavium dot com>
Hi,
This is the final patch which adds support for the dynamic linker and
multi-lib directories for ILP32. I did not change multi-arch support as
I did not know what it should be changed to and internally here at Cavium,
we don't use multi-arch.
OK? Build and tested for aarch64-linux-gnu with and without --with-multilib-list=lp64,ilp32.
Thanks,
Andrew Pinski
* config/aarch64/aarch64-linux.h (GLIBC_DYNAMIC_LINKER): /lib/ld-linux32-aarch64.so.1
is used for ILP32.
(LINUX_TARGET_LINK_SPEC): Add linker script
file whose name depends on -mabi= and -mbig-endian.
* config/aarch64/t-aarch64-linux (MULTILIB_OSDIRNAMES): Handle LP64 better
and handle ilp32 too.
(MULTILIB_OPTIONS): Delete.
(MULTILIB_DIRNAMES): Delete.
---
gcc/ChangeLog | 11 +++++++++++
gcc/config/aarch64/aarch64-linux.h | 5 +++--
gcc/config/aarch64/t-aarch64-linux | 7 ++-----
3 files changed, 16 insertions(+), 7 deletions(-)
diff --git a/gcc/config/aarch64/aarch64-linux.h b/gcc/config/aarch64/aarch64-linux.h
index 83efad4..408297a 100644
--- a/gcc/config/aarch64/aarch64-linux.h
+++ b/gcc/config/aarch64/aarch64-linux.h
@@ -21,7 +21,7 @@
#ifndef GCC_AARCH64_LINUX_H
#define GCC_AARCH64_LINUX_H
-#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
+#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux%{mabi=ilp32:32}-aarch64.so.1"
#define CPP_SPEC "%{pthread:-D_REENTRANT}"
@@ -32,7 +32,8 @@
%{rdynamic:-export-dynamic} \
-dynamic-linker " GNU_USER_DYNAMIC_LINKER " \
-X \
- %{mbig-endian:-EB} %{mlittle-endian:-EL}"
+ %{mbig-endian:-EB} %{mlittle-endian:-EL} \
+ -maarch64linux%{mabi=ilp32:32}%{mbig-endian:b}"
#define LINK_SPEC LINUX_TARGET_LINK_SPEC
diff --git a/gcc/config/aarch64/t-aarch64-linux b/gcc/config/aarch64/t-aarch64-linux
index ca1525e..5032ea9 100644
--- a/gcc/config/aarch64/t-aarch64-linux
+++ b/gcc/config/aarch64/t-aarch64-linux
@@ -22,10 +22,7 @@ LIB1ASMSRC = aarch64/lib1funcs.asm
LIB1ASMFUNCS = _aarch64_sync_cache_range
AARCH_BE = $(if $(findstring TARGET_BIG_ENDIAN_DEFAULT=1, $(tm_defines)),_be)
-MULTILIB_OSDIRNAMES = .=../lib64$(call if_multiarch,:aarch64$(AARCH_BE)-linux-gnu)
+MULTILIB_OSDIRNAMES = mabi.lp64=../lib64$(call if_multiarch,:aarch64$(AARCH_BE)-linux-gnu)
MULTIARCH_DIRNAME = $(call if_multiarch,aarch64$(AARCH_BE)-linux-gnu)
-# Disable the multilib for linux-gnu targets for the time being; focus
-# on the baremetal targets.
-MULTILIB_OPTIONS =
-MULTILIB_DIRNAMES =
+MULTILIB_OSDIRNAMES += mabi.ilp32=../lib32
--
1.7.2.5