From 0b54799d80fb859c7b142467e4d42c99db59df50 Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Tue, 8 Dec 2015 08:30:35 +0000 Subject: [PATCH 44/46] Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker. Upstream-Status: Backport [partial] Signed-off-by: Khem Raj --- gcc/config.gcc | 10 ++++- gcc/config/linux.h | 100 +++++++++++++++++++++++++++++++++++++----- gcc/config/linux.opt | 4 ++ gcc/config/rs6000/secureplt.h | 1 + gcc/config/rs6000/sysv4.h | 5 +++ gcc/ginclude/stddef.h | 3 ++ 6 files changed, 110 insertions(+), 13 deletions(-) Index: gcc-5.4.0/gcc/config.gcc =================================================================== --- gcc-5.4.0.orig/gcc/config.gcc +++ gcc-5.4.0/gcc/config.gcc @@ -575,7 +575,7 @@ case ${target} in esac # Common C libraries. -tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3" +tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4" # 32-bit x86 processors supported by --with-arch=. Each processor # MUST be separated by exactly one space. @@ -720,6 +720,9 @@ case ${target} in *-*-*uclibc*) tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC" ;; + *-*-*musl*) + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL" + ;; *) tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC" ;; @@ -2420,6 +2423,11 @@ powerpc*-*-linux*) powerpc*-*-linux*paired*) tm_file="${tm_file} rs6000/750cl.h" ;; esac + case ${target} in + *-linux*-musl*) + enable_secureplt=yes ;; + esac + if test x${enable_secureplt} = xyes; then tm_file="rs6000/secureplt.h ${tm_file}" fi Index: gcc-5.4.0/gcc/config/linux.h =================================================================== --- gcc-5.4.0.orig/gcc/config/linux.h +++ gcc-5.4.0/gcc/config/linux.h @@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTI #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC) #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC) #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC) +#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL) #else #define OPTION_GLIBC (linux_libc == LIBC_GLIBC) #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC) #define OPTION_BIONIC (linux_libc == LIBC_BIONIC) +#define OPTION_MUSL (linux_libc == LIBC_MUSL) #endif #define GNU_USER_TARGET_OS_CPP_BUILTINS() \ @@ -53,18 +55,21 @@ see the files COPYING3 and COPYING.RUNTI uClibc or Bionic is the default C library and whether -muclibc or -mglibc or -mbionic has been passed to change the default. */ -#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \ - "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}" +#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \ + "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}" #if DEFAULT_LIBC == LIBC_GLIBC -#define CHOOSE_DYNAMIC_LINKER(G, U, B) \ - CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B) +#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \ + CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M) #elif DEFAULT_LIBC == LIBC_UCLIBC -#define CHOOSE_DYNAMIC_LINKER(G, U, B) \ - CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B) +#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \ + CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M) #elif DEFAULT_LIBC == LIBC_BIONIC -#define CHOOSE_DYNAMIC_LINKER(G, U, B) \ - CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U) +#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \ + CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M) +#elif DEFAULT_LIBC == LIBC_MUSL +#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \ + CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B) #else #error "Unsupported DEFAULT_LIBC" #endif /* DEFAULT_LIBC */ @@ -84,16 +89,16 @@ see the files COPYING3 and COPYING.RUNTI #define GNU_USER_DYNAMIC_LINKER \ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \ - BIONIC_DYNAMIC_LINKER) + BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER) #define GNU_USER_DYNAMIC_LINKER32 \ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \ - BIONIC_DYNAMIC_LINKER32) + BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32) #define GNU_USER_DYNAMIC_LINKER64 \ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \ - BIONIC_DYNAMIC_LINKER64) + BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64) #define GNU_USER_DYNAMIC_LINKERX32 \ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \ - BIONIC_DYNAMIC_LINKERX32) + BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32) /* Whether we have Bionic libc runtime */ #undef TARGET_HAS_BIONIC @@ -123,3 +128,74 @@ see the files COPYING3 and COPYING.RUNTI # define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function #endif + +/* musl avoids problematic includes by rearranging the include directories. + * Unfortunately, this is mostly duplicated from cppdefault.c */ +#if DEFAULT_LIBC == LIBC_MUSL +#define INCLUDE_DEFAULTS_MUSL_GPP \ + { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \ + GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \ + { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \ + GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \ + { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \ + GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 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 Index: gcc-5.4.0/gcc/config/linux.opt =================================================================== --- gcc-5.4.0.orig/gcc/config/linux.opt +++ gcc-5.4.0/gcc/config/linux.opt @@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_l Use GNU C library muclibc -Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic) +Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mmusl) Use uClibc C library + +mmusl +Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mbionic) +Use musl C library Index: gcc-5.4.0/gcc/config/rs6000/secureplt.h =================================================================== --- gcc-5.4.0.orig/gcc/config/rs6000/secureplt.h +++ gcc-5.4.0/gcc/config/rs6000/secureplt.h @@ -18,3 +18,4 @@ along with GCC; see the file COPYING3. . */ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt" +#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt" Index: gcc-5.4.0/gcc/config/rs6000/sysv4.h =================================================================== --- gcc-5.4.0.orig/gcc/config/rs6000/sysv4.h +++ gcc-5.4.0/gcc/config/rs6000/sysv4.h @@ -538,6 +538,10 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF #define CC1_SECURE_PLT_DEFAULT_SPEC "" #endif +#ifndef LINK_SECURE_PLT_DEFAULT_SPEC +#define LINK_SECURE_PLT_DEFAULT_SPEC "" +#endif + /* Pass -G xxx to the compiler. */ #undef CC1_SPEC #define CC1_SPEC "%{G*} %(cc1_cpu)" \ @@ -889,6 +893,7 @@ ncrtn.o%s" { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \ { "link_os_default", LINK_OS_DEFAULT_SPEC }, \ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \ + { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \ Index: gcc-5.4.0/gcc/ginclude/stddef.h =================================================================== --- gcc-5.4.0.orig/gcc/ginclude/stddef.h +++ gcc-5.4.0/gcc/ginclude/stddef.h @@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t; #ifndef _GCC_SIZE_T #ifndef _SIZET_ #ifndef __size_t +#ifndef __DEFINED_size_t /* musl */ #define __size_t__ /* BeOS */ #define __SIZE_T__ /* Cray Unicos/Mk */ #define _SIZE_T @@ -200,6 +201,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t; #define ___int_size_t_h #define _GCC_SIZE_T #define _SIZET_ +#define __DEFINED_size_t /* musl */ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \ || defined(__DragonFly__) \ || defined(__FreeBSD_kernel__) @@ -218,6 +220,7 @@ typedef __SIZE_TYPE__ size_t; typedef long ssize_t; #endif /* __BEOS__ */ #endif /* !(defined (__GNUG__) && defined (size_t)) */ +#endif /* __DEFINED_size_t */ #endif /* __size_t */ #endif /* _SIZET_ */ #endif /* _GCC_SIZE_T */