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microblaze: fix musl support

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For musl we need patches for bintils 2.25.1 and 2.26.1.
Binutils 2.27 and gcc 6.2.x does not work for microblaze,
even not for uClibc-ng or glibc.
For gcc 5.4.x the existing patch need reworking so that
musl and uClibc-ng is supported.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
[Thomas:
 - Add proper description for the binutils patches
 - Use BR2_microblaze instead of BR2_microblazeel and BR2_microblazebz]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Waldemar Brodkorb 2016-10-23 21:26:16 +02:00 committed by Thomas Petazzoni
parent 718b7ebb43
commit d70ade160e
6 changed files with 86 additions and 24 deletions
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22
package/binutils/2.25.1/800-microblaze-musl.patch Normal file
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@ -0,0 +1,22 @@
Fix the genetation of GOT entries for the Microblaze target.
PR target/19516
* elf32-microblaze.c (microblaze_elf_finish_dynamic_symbol):
Always produce a RELATIVE reloc for a local symbol.
[Taken from https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=47993b4af18c6ef1cad300f6393bf896d3cb5e5c.]
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
diff -Nur binutils-2.25.1.orig/bfd/elf32-microblaze.c binutils-2.25.1/bfd/elf32-microblaze.c
--- binutils-2.25.1.orig/bfd/elf32-microblaze.c 2015-07-21 10:20:58.000000000 +0200
+++ binutils-2.25.1/bfd/elf32-microblaze.c 2016-02-14 11:38:45.822387506 +0100
@@ -3293,8 +3293,7 @@
The entry in the global offset table will already have been
initialized in the relocate_section function. */
if (info->shared
- && (info->symbolic || h->dynindx == -1)
- && h->def_regular)
+ && ((info->symbolic && h->def_regular) || h->dynindx == -1))
{
asection *sec = h->root.u.def.section;
microblaze_elf_output_dynamic_relocation (output_bfd,

23
package/binutils/2.26.1/0800-microblaze-musl.patch Normal file
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@ -0,0 +1,23 @@
Fix the genetation of GOT entries for the Microblaze target.
PR target/19516
* elf32-microblaze.c (microblaze_elf_finish_dynamic_symbol):
Always produce a RELATIVE reloc for a local symbol.
[Taken from https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=47993b4af18c6ef1cad300f6393bf896d3cb5e5c.]
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
diff -Nur binutils-2.26.1.orig/bfd/elf32-microblaze.c binutils-2.26.1/bfd/elf32-microblaze.c
--- binutils-2.26.1.orig/bfd/elf32-microblaze.c 2015-11-13 09:27:40.000000000 +0100
+++ binutils-2.26.1/bfd/elf32-microblaze.c 2016-10-20 19:06:58.655565765 +0200
@@ -3296,8 +3296,8 @@
The entry in the global offset table will already have been
initialized in the relocate_section function. */
if (bfd_link_pic (info)
- && (info->symbolic || h->dynindx == -1)
- && h->def_regular)
+ && ((info->symbolic && h->def_regular)
+ || h->dynindx == -1))
{
asection *sec = h->root.u.def.section;
microblaze_elf_output_dynamic_relocation (output_bfd,

2
package/binutils/Config.in.host
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@ -17,6 +17,8 @@ choice
config BR2_BINUTILS_VERSION_2_27_X
bool "binutils 2.27"
# supported but broken on Microblaze
depends on !BR2_microblaze
endchoice

24
package/gcc/5.4.0/892-microblaze-uclibc.patch
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@ -1,24 +0,0 @@
Add dynamic linker support for uClibc
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
diff -Nur gcc-5.3.0.orig/gcc/config/microblaze/linux.h gcc-5.3.0/gcc/config/microblaze/linux.h
--- gcc-5.3.0.orig/gcc/config/microblaze/linux.h 2015-05-28 16:08:19.000000000 +0200
+++ gcc-5.3.0/gcc/config/microblaze/linux.h 2016-05-13 09:21:01.579262885 +0200
@@ -28,7 +28,15 @@
#undef TLS_NEEDS_GOT
#define TLS_NEEDS_GOT 1
-#define DYNAMIC_LINKER "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+
+#if DEFAULT_LIBC == LIBC_UCLIBC
+#define DYNAMIC_LINKER UCLIBC_DYNAMIC_LINKER
+#else
+#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
+#endif
+
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
{ "dynamic_linker", DYNAMIC_LINKER }

36
package/gcc/5.4.0/910-microblaze-musl-and-uclibc.patch Normal file
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@ -0,0 +1,36 @@
Add dynamic linker support for uClibc-ng/musl
Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
diff -Nur gcc-5.4.0.orig/gcc/config/microblaze/linux.h gcc-5.4.0/gcc/config/microblaze/linux.h
--- gcc-5.4.0.orig/gcc/config/microblaze/linux.h 2015-05-28 16:08:19.000000000 +0200
+++ gcc-5.4.0/gcc/config/microblaze/linux.h 2016-10-23 17:09:46.962010871 +0200
@@ -28,7 +28,26 @@
#undef TLS_NEEDS_GOT
#define TLS_NEEDS_GOT 1
-#define DYNAMIC_LINKER "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+
+#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
+#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
+#endif
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
+
+#if DEFAULT_LIBC == LIBC_UCLIBC
+#define DYNAMIC_LINKER UCLIBC_DYNAMIC_LINKER
+#elif DEFAULT_LIBC == LIBC_MUSL
+#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
+#else
+#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
+#endif
+
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
{ "dynamic_linker", DYNAMIC_LINKER }

3
package/gcc/Config.in.host
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@ -48,6 +48,8 @@ choice
depends on !BR2_MIPS_CPU_MIPS32R5 && !BR2_MIPS_CPU_MIPS64R5
# Unsupported for MIPS R6
depends on !BR2_MIPS_CPU_MIPS32R6 && !BR2_MIPS_CPU_MIPS64R6
# musl microblaze unsupported
depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_microblazeel || BR2_microblazebe))
# musl ppc64 unsupported
depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_powerpc64 || BR2_powerpc64el))
# musl mips64 unsupported
@ -73,6 +75,7 @@ choice
bool "gcc 6.x"
# Broken or unsupported architectures
depends on !BR2_arc
depends on !BR2_microblaze
# Unsupported MIPS cores
depends on !BR2_mips_m6201 && !BR2_mips_p6600
select BR2_TOOLCHAIN_GCC_AT_LEAST_6