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cross-s390x-gcc48-icecream-backend.7303
libjava-aarch64-support.diff
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File libjava-aarch64-support.diff of Package cross-s390x-gcc48-icecream-backend.7303
Index: boehm-gc/include/private/gcconfig.h =================================================================== --- boehm-gc/include/private/gcconfig.h.orig +++ boehm-gc/include/private/gcconfig.h @@ -60,6 +60,13 @@ # endif /* Determine the machine type: */ +# if defined(__aarch64__) +# define AARCH64 +# if !defined(LINUX) +# define NOSYS +# define mach_type_known +# endif +# endif # if defined(__arm__) || defined(__thumb__) # define ARM32 # if !defined(LINUX) && !defined(NETBSD) @@ -239,6 +246,10 @@ # define IA64 # define mach_type_known # endif +# if defined(LINUX) && defined(__aarch64__) +# define AARCH64 +# define mach_type_known +# endif # if defined(LINUX) && defined(__arm__) # define ARM32 # define mach_type_known @@ -500,6 +511,7 @@ /* running Amdahl UTS4 */ /* S390 ==> 390-like machine */ /* running LINUX */ + /* AARCH64 ==> ARM AArch64 */ /* ARM32 ==> Intel StrongARM */ /* IA64 ==> Intel IPF */ /* (e.g. Itanium) */ @@ -1833,6 +1845,32 @@ # define HEURISTIC1 # endif +# ifdef AARCH64 +# define USE_GENERIC_PUSH_REGS +# define CPP_WORDSZ 64 +# define MACH_TYPE "AARCH64" +# define ALIGNMENT 8 +# ifndef HBLKSIZE +# define HBLKSIZE 4096 +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define LINUX_STACKBOTTOM +# define DYNAMIC_LOADING + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern char _end[]; +# define DATAEND ((ptr_t)(&_end)) +# endif +# ifdef NOSYS + /* __data_start is usually defined in the target linker script. */ + extern int __data_start[]; +# define DATASTART ((ptr_t)__data_start) + extern void *__stack_base__; +# define STACKBOTTOM ((ptr_t)__stack_base__) +# endif +# endif + # ifdef ARM32 # define CPP_WORDSZ 32 # define MACH_TYPE "ARM32" Index: configure =================================================================== --- configure.orig +++ configure @@ -3272,6 +3272,8 @@ esac # Disable Java if libffi is not supported. case "${target}" in + aarch64*-*-*) + ;; alpha*-*-*) ;; arm*-*-*) Index: configure.ac =================================================================== --- configure.ac.orig +++ configure.ac @@ -611,6 +611,8 @@ esac # Disable Java if libffi is not supported. case "${target}" in + aarch64*-*-*) + ;; alpha*-*-*) ;; arm*-*-*) Index: libjava/classpath/native/fdlibm/ieeefp.h =================================================================== --- libjava/classpath/native/fdlibm/ieeefp.h.orig +++ libjava/classpath/native/fdlibm/ieeefp.h @@ -4,6 +4,14 @@ #ifndef __IEEE_BIG_ENDIAN #ifndef __IEEE_LITTLE_ENDIAN +#ifdef __aarch64__ +#ifdef __AARCH64EB__ +#define __IEEE_BIG_ENDIAN +#else +#define __IEEE_LITTLE_ENDIAN +#endif +#endif + #ifdef __alpha__ #define __IEEE_LITTLE_ENDIAN #endif Index: libjava/configure.host =================================================================== --- libjava/configure.host.orig +++ libjava/configure.host @@ -81,6 +81,11 @@ ATOMICSPEC= # This case statement supports per-CPU defaults. case "${host}" in + aarch64*-linux*) + libgcj_interpreter=yes + sysdeps_dir=aarch64 + ATOMICSPEC=-fuse-atomic-builtins + ;; arm*-elf) with_libffi_default=no PROCESS=Ecos @@ -289,6 +294,12 @@ EOF sysdeps_dir=i386 DIVIDESPEC=-f%{m32:no-}use-divide-subroutine ;; + aarch64*-linux* ) + slow_pthread_self=no + can_unwind_signal=no + CHECKREFSPEC=-fcheck-references + DIVIDESPEC=-fuse-divide-subroutine + ;; arm*-linux* ) slow_pthread_self=no can_unwind_signal=no Index: libjava/sysdep/aarch64/locks.h =================================================================== --- /dev/null +++ libjava/sysdep/aarch64/locks.h @@ -0,0 +1,58 @@ +// locks.h - Thread synchronization primitives. AArch64 implementation. + +#ifndef __SYSDEP_LOCKS_H__ +#define __SYSDEP_LOCKS_H__ + +typedef size_t obj_addr_t; /* Integer type big enough for object */ + /* address. */ + +// Atomically replace *addr by new_val if it was initially equal to old. +// Return true if the comparison succeeded. +// Assumed to have acquire semantics, i.e. later memory operations +// cannot execute before the compare_and_swap finishes. +inline static bool +compare_and_swap(volatile obj_addr_t *addr, + obj_addr_t old, + obj_addr_t new_val) +{ + return __sync_bool_compare_and_swap(addr, old, new_val); +} + +// Set *addr to new_val with release semantics, i.e. making sure +// that prior loads and stores complete before this +// assignment. +inline static void +release_set(volatile obj_addr_t *addr, obj_addr_t new_val) +{ + __sync_synchronize(); + *(addr) = new_val; +} + +// Compare_and_swap with release semantics instead of acquire semantics. +// On many architecture, the operation makes both guarantees, so the +// implementation can be the same. +inline static bool +compare_and_swap_release(volatile obj_addr_t *addr, + obj_addr_t old, + obj_addr_t new_val) +{ + return __sync_bool_compare_and_swap(addr, old, new_val); +} + +// Ensure that subsequent instructions do not execute on stale +// data that was loaded from memory before the barrier. +// On X86, the hardware ensures that reads are properly ordered. +inline static void +read_barrier() +{ + __sync_synchronize(); +} + +// Ensure that prior stores to memory are completed with respect to other +// processors. +inline static void +write_barrier() +{ + __sync_synchronize(); +} +#endif
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