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musl-cross-make/patches/gcc-4.2.1/0001-musl.diff
Rich Felker 06a1f34243 add support for gcc 4.2.1 (last gplv2 version) 
patch set consists of:

0001 full musl libc target support
0002 fixes for wrong optimizations of weak defs/aliases
0003 various sh breakage in configure scripts
0005 static pie support
0006 --enable-default-pie support
0008 fix for cross compiling bug in build system
0009 fix for wrong default div strategy for sh2 (missing libgcc code)
0010 fix failure to build on modern host gcc due to gnu-inline
0011 fix sh & alpha bootstrap failures before libc is built
0012 fix broken local-exec TLS with -fPIE on sh
2015-11-06 06:23:54 +00:00

361 lines
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diff --git a/config.sub b/config.sub
index fab0aa3..b83660a 100755
--- a/config.sub
+++ b/config.sub
@@ -120,7 +120,7 @@ esac
# Here we must recognize all the valid KERNEL-OS combinations.
maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
case $maybe_os in
- nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
+ nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | linux-musl* | \
uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
storm-chaos* | os2-emx* | rtmk-nova*)
os=-$maybe_os
@@ -1211,7 +1211,7 @@ case $os in
| -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
| -chorusos* | -chorusrdb* \
| -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
- | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
+ | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* | -linux-musl* \
| -uxpv* | -beos* | -mpeix* | -udk* \
| -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
| -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
diff --git a/fixincludes/mkfixinc.sh b/fixincludes/mkfixinc.sh
index ef048f7..f1cb8a5 100755
--- a/fixincludes/mkfixinc.sh
+++ b/fixincludes/mkfixinc.sh
@@ -28,7 +28,8 @@ case $machine in
powerpc-*-eabi* | \
powerpc-*-rtems* | \
powerpcle-*-eabisim* | \
- powerpcle-*-eabi* )
+ powerpcle-*-eabi* | \
+ *-musl* )
# IF there is no include fixing,
# THEN create a no-op fixer and exit
(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 9a142e2..25136b7 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -468,11 +468,14 @@ case ${target} in
esac
tmake_file="t-slibgcc-elf-ver t-linux"
case ${target} in
+ *-*-*musl*)
+ tm_defines="${tm_defines} UCLIBC_DEFAULT=0 MUSL_DEFAULT=1"
+ ;;
*-*-*uclibc*)
- tm_defines="${tm_defines} UCLIBC_DEFAULT=1"
+ tm_defines="${tm_defines} UCLIBC_DEFAULT=1 MUSL_DEFAULT=0"
;;
*)
- tm_defines="${tm_defines} UCLIBC_DEFAULT=0"
+ tm_defines="${tm_defines} UCLIBC_DEFAULT=0 MUSL_DEFAULT=0"
;;
esac
# Assume that glibc or uClibc are being used and so __cxa_atexit is provided.
diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
index 6612f74..f2ce735 100644
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -55,6 +55,23 @@
#undef GLIBC_DYNAMIC_LINKER
#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+/* For ARM musl currently supports four dynamic linkers:
+ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
+ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
+ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
+ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
+ musl does not support the legacy OABI mode.
+ All the dynamic linkers live in /lib.
+ We default to soft-float, EL. */
+#undef MUSL_DYNAMIC_LINKER
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
+#endif
+#define MUSL_DYNAMIC_LINKER \
+ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+
/* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
use the GNU/Linux version, not the generic BPABI version. */
#undef LINK_SPEC
diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
index 7eb2395..213b586 100644
--- a/gcc/config/i386/linux.h
+++ b/gcc/config/i386/linux.h
@@ -103,6 +103,9 @@ Boston, MA 02110-1301, USA. */
#define LINK_EMULATION "elf_i386"
#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
{ "link_emulation", LINK_EMULATION },\
diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
index cc8ed16..f0f025e 100644
--- a/gcc/config/i386/linux64.h
+++ b/gcc/config/i386/linux64.h
@@ -52,6 +52,13 @@ Boston, MA 02110-1301, USA. */
#define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+#undef MUSL_DYNAMIC_LINKER32
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
+#undef MUSL_DYNAMIC_LINKER64
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
+#undef MUSL_DYNAMIC_LINKERX32
+#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+
#undef LINK_SPEC
#define LINK_SPEC "%{!m32:-m elf_x86_64} %{m32:-m elf_i386} \
%{shared:-shared} \
diff --git a/gcc/config/linux.h b/gcc/config/linux.h
index 59e3e85..1967b46 100644
--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
@@ -102,10 +102,12 @@ Boston, MA 02110-1301, USA. */
/* Determine which dynamic linker to use depending on whether GLIBC or
uClibc is the default C library and whether -muclibc or -mglibc has
been passed to change the default. */
-#if UCLIBC_DEFAULT
-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
+#if MUSL_DEFAULT
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";muclibc:" U ";:" M "}"
+#elif UCLIBC_DEFAULT
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";mmusl:" M ";:" U "}"
#else
-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mmusl:" M ";muclibc:" U ";:" G "}"
#endif
/* For most targets the following definitions suffice;
@@ -115,15 +117,89 @@ Boston, MA 02110-1301, USA. */
#define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+/* Should be redefined for each target that supports musl. */
+#define MUSL_DYNAMIC_LINKER "/dev/null"
+#define MUSL_DYNAMIC_LINKER32 "/dev/null"
+#define MUSL_DYNAMIC_LINKER64 "/dev/null"
+#define MUSL_DYNAMIC_LINKERX32 "/dev/null"
+
#define LINUX_DYNAMIC_LINKER \
- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
#define LINUX_DYNAMIC_LINKER32 \
- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
#define LINUX_DYNAMIC_LINKER64 \
- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
/* Determine whether the entire c99 runtime
is present in the runtime library. */
#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
#define TARGET_POSIX_IO
+
+/* musl avoids problematic includes by rearranging the include directories.
+ * Unfortunately, this is mostly duplicated from cppdefault.c */
+#if MUSL_DEFAULT
+#define INCLUDE_DEFAULTS_MUSL_GPP \
+ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, 0, 0 }, \
+ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, 0, 1 }, \
+ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, 0, 0 },
+
+#ifdef LOCAL_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_LOCAL \
+ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
+ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
+#else
+#define INCLUDE_DEFAULTS_MUSL_LOCAL
+#endif
+
+#ifdef PREFIX_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_PREFIX \
+ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_PREFIX
+#endif
+
+#ifdef CROSS_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_CROSS \
+ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_CROSS
+#endif
+
+#ifdef TOOL_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_TOOL \
+ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_TOOL
+#endif
+
+#ifdef NATIVE_SYSTEM_HEADER_DIR
+#define INCLUDE_DEFAULTS_MUSL_NATIVE \
+ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
+ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
+#else
+#define INCLUDE_DEFAULTS_MUSL_NATIVE
+#endif
+
+#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
+# undef INCLUDE_DEFAULTS_MUSL_LOCAL
+# define INCLUDE_DEFAULTS_MUSL_LOCAL
+# undef INCLUDE_DEFAULTS_MUSL_NATIVE
+# define INCLUDE_DEFAULTS_MUSL_NATIVE
+#else
+# undef INCLUDE_DEFAULTS_MUSL_CROSS
+# define INCLUDE_DEFAULTS_MUSL_CROSS
+#endif
+
+#undef INCLUDE_DEFAULTS
+#define INCLUDE_DEFAULTS \
+ { \
+ INCLUDE_DEFAULTS_MUSL_GPP \
+ INCLUDE_DEFAULTS_MUSL_PREFIX \
+ INCLUDE_DEFAULTS_MUSL_CROSS \
+ INCLUDE_DEFAULTS_MUSL_TOOL \
+ INCLUDE_DEFAULTS_MUSL_NATIVE \
+ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0 } \
+ }
+#endif
diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
index 3f615bb..31fb21b 100644
--- a/gcc/config/linux.opt
+++ b/gcc/config/linux.opt
@@ -27,3 +27,7 @@ Use uClibc instead of GNU libc
mglibc
Target RejectNegative Report InverseMask(UCLIBC, GLIBC) Var(linux_uclibc) VarExists
Use GNU libc instead of uClibc
+
+mmusl
+Target RejectNegative Report Var(linux_musl)
+Use musl C library
diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
index ff268d4..97bfc38 100644
--- a/gcc/config/mips/linux.h
+++ b/gcc/config/mips/linux.h
@@ -179,3 +179,9 @@ Boston, MA 02110-1301, USA. */
%{profile:-lc_p} %{!profile: -lc}}"
#define MD_UNWIND_SUPPORT "config/mips/linux-unwind.h"
+
+#undef MUSL_DYNAMIC_LINKER32
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-mips%{EL:el}%{msoft-float:-sf}.so.1"
+#undef MUSL_DYNAMIC_LINKER64
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-mips64%{EL:el}%{msoft-float:-sf}.so.1"
+#define MUSL_DYNAMIC_LINKERN32 "/lib/ld-musl-mipsn32%{EL:el}%{msoft-float:-sf}.so.1"
diff --git a/gcc/config/sh/linux-unwind.h b/gcc/config/sh/linux-unwind.h
index de84a77..98d1661 100644
--- a/gcc/config/sh/linux-unwind.h
+++ b/gcc/config/sh/linux-unwind.h
@@ -80,10 +80,10 @@ shmedia_fallback_frame_state (struct _Unwind_Context *context,
&& (*(unsigned long *) (pc+11) == 0x6ff0fff0))
{
struct rt_sigframe {
- struct siginfo *pinfo;
+ siginfo_t *pinfo;
void *puc;
- struct siginfo info;
- struct ucontext uc;
+ siginfo_t info;
+ ucontext_t uc;
} *rt_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
The aliasing warning is correct, but should not be a problem
@@ -179,8 +179,8 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
&& (*(unsigned short *) (pc+14) == 0x00ad))))
{
struct rt_sigframe {
- struct siginfo info;
- struct ucontext uc;
+ siginfo_t info;
+ ucontext_t uc;
} *rt_ = context->cfa;
/* The void * cast is necessary to avoid an aliasing warning.
The aliasing warning is correct, but should not be a problem
diff --git a/gcc/config/sh/linux.h b/gcc/config/sh/linux.h
index 94c3166..306a08c 100644
--- a/gcc/config/sh/linux.h
+++ b/gcc/config/sh/linux.h
@@ -48,6 +48,29 @@ Boston, MA 02110-1301, USA. */
#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
+#define MUSL_DYNAMIC_LINKER_E "%{mb:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}"
+#endif
+
+#if TARGET_CPU_DEFAULT & ( MASK_HARD_SH2A_DOUBLE | MASK_SH4 )
+/* "-nofpu" if any nofpu option is specified */
+#define MUSL_DYNAMIC_LINKER_FP \
+ "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \
+ "m4-340|m4-400|m4-500|m4al|m5-32media-nofpu|m5-64media-nofpu|" \
+ "m5-compact-nofpu:-nofpu}"
+#else
+/* "-nofpu" if none of the hard fpu options are specified */
+#define MUSL_DYNAMIC_LINKER_FP \
+ "%{m2a|m4|m4-100|m4-200|m4-300|m4a|m5-32media|m5-64media|m5-compact:;:-nofpu}"
+#endif
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER \
+ "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP \
+ "%{mfdpic:-fdpic}.so.1"
+
#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
#undef SUBTARGET_LINK_EMUL_SUFFIX
diff --git a/gcc/unwind-dw2-fde-glibc.c b/gcc/unwind-dw2-fde-glibc.c
index 25bf2bb..59f7615 100644
--- a/gcc/unwind-dw2-fde-glibc.c
+++ b/gcc/unwind-dw2-fde-glibc.c
@@ -49,7 +49,7 @@
#include "gthr.h"
#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
+ && (!defined(__GLIBC__) || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
|| (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
#ifndef __RELOC_POINTER
diff --git a/libstdc++-v3/config/os/generic/os_defines.h b/libstdc++-v3/config/os/generic/os_defines.h
index bcc533c..a9bfded 100644
--- a/libstdc++-v3/config/os/generic/os_defines.h
+++ b/libstdc++-v3/config/os/generic/os_defines.h
@@ -38,4 +38,9 @@
// System-specific #define, typedefs, corrections, etc, go here. This
// file will come before all others.
+// Disable the weak reference logic in gthr.h for os/generic because it
+// is broken on every platform unless there is implementation specific
+// workaround in gthr-posix.h and at link-time for static linking.
+#define _GLIBCXX_GTHREAD_USE_WEAK 0
+
#endif
diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
index 441eb4c..37e80ab 100644
--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
@@ -210,6 +210,9 @@ case "${host_os}" in
freebsd*)
os_include_dir="os/bsd/freebsd"
;;
+ linux-musl*)
+ os_include_dir="os/generic"
+ ;;
gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
if [ "$uclibc" = "yes" ]; then
os_include_dir="os/uclibc"
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