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* compiler, runtime: Fix unexpected GC interfering with closure passing.ian2014-08-131-0/+7
| | | | | | | | | | | | | | | | | | | | | | The Go frontend passes closures through to functions using the functions __go_set_closure and __go_get_closure. The expectation is that there are no function calls between set_closure and get_closure. However, it turns out that there can be function calls if some of the function arguments require type conversion to an interface type. Converting to an interface type can allocate memory, and that can in turn trigger a garbage collection, and that can in turn call pool cleanup functions that may call __go_set_closure. So the called function can see the wrong closure value, which is bad. This patch fixes the memory allocation function to preserve the closure value across any possible garbage collection. A test case is the libgo database/sql check run with the environment variable GOGC set to 1. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@213933 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Use a better heap location on arm64 systems.ian2014-02-211-3/+27
| | | | | | | | | | Before this, the heap location used on a 64-bit system was not available to user-space on arm64, so the "32-bit" strategy ended up being used. So use somewhere that is available, and for bonus points is far away from where the kernel allocates address space by default. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@207977 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: fix 32-bit malloc for pointers >= 0x80000000ian2014-01-091-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The spans array is allocated in runtime_mallocinit. On a 32-bit system the number of entries in the spans array is MaxArena32 / PageSize, which (2U << 30) / (1 << 12) == (1 << 19). So we are allocating an array that can hold 19 bits for an index that can hold 20 bits. According to the comment in the function, this is intentional: we only allocate enough spans (and bitmaps) for a 2G arena, because allocating more would probably be wasteful. But since the span index is simply the upper 20 bits of the memory address, this scheme only works if memory addresses are limited to the low 2G of memory. That would be OK if we were careful to enforce it, but we're not. What we are careful to enforce, in functions like runtime_MHeap_SysAlloc, is that we always return addresses between the heap's arena_start and arena_start + MaxArena32. We generally get away with it because we start allocating just after the program end, so we only run into trouble with programs that allocate a lot of memory, enough to get past address 0x80000000. This changes the code that computes a span index to subtract arena_start on 32-bit systems just as we currently do on 64-bit systems. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206501 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Fix GC flag in when allocating memory from cgo.ian2013-11-141-1/+1
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204815 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Correct flag (FlagNoGC => FlagNoInvokeGC).ian2013-11-091-1/+1
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204617 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to October 24 version of master library.ian2013-11-061-227/+214
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204466 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Handle allocating memory in cgo/SWIG function.ian2013-07-241-2/+19
| | | | | | | | | A function that returns an interface type and returns a value that requires memory allocation will try to allocate while appearing to be in a syscall. This patch lets that work. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@201226 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Check _end rather than end to find end of program.ian2013-07-241-2/+2
| | | | | | | | | This fixes a problem on Solaris, where end is not defined in the main program but comes from some shared library. This only matters for 32-bit targets. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@201220 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to Go 1.1.1.ian2013-07-161-33/+81
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@200974 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update Go library to master revision 15489/921e53d4863c.ian2013-01-291-6/+16
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195560 138bc75d-0d04-0410-961f-82ee72b054a4
* PR go/46986ian2013-01-241-2/+2
| | | | | | | | all: prepend #__USER_LABEL_PREFIX__ to mangled Go symbols For old-fashioned Darwin. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195438 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to revision 15193:6fdc1974457c of master library.ian2012-12-221-11/+11
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@194692 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to current version of master library.ian2012-11-211-17/+20
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@193688 138bc75d-0d04-0410-961f-82ee72b054a4
* compiler, runtime: More steps toward separating int and intgo.ian2012-11-011-1/+0
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@193059 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to current sources.ian2012-10-231-11/+282
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@192704 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to Go 1.0.2 release.ian2012-06-251-0/+1
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@188943 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Copy runtime_printf from other Go library.ian2012-05-241-6/+6
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@187848 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Use -fgo-pkgpath.ian2012-05-141-2/+2
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@187485 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Ignore stack sizes when deciding when to GC.ian2012-04-201-1/+1
| | | | | | | | Also allocate heap bitmaps bit in page size units and clear context when putting G structures on free list. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@186607 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to weekly.2012-03-13.ian2012-03-301-1/+19
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@186023 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to weekly.2012-03-04 release.ian2012-03-061-1/+10
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@185010 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to weekly.2012-02-22 release.ian2012-03-021-12/+1
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184819 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to weekly.2012-02-14 release.ian2012-03-021-5/+15
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184798 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Update to weekly.2012-01-15.ian2012-01-251-1/+1
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@183539 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Copy runtime_panicstring from master library.ian2011-11-301-3/+0
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181830 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Multiplex goroutines onto OS threads.ian2011-11-281-33/+21
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181772 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: New lock/note implementation.ian2011-11-221-6/+0
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181633 138bc75d-0d04-0410-961f-82ee72b054a4
* runtime: Don't ask mmap for wrapping memory.ian2011-11-011-0/+2
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@180732 138bc75d-0d04-0410-961f-82ee72b054a4
* Update Go library to last weekly.ian2011-10-261-19/+36
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@180552 138bc75d-0d04-0410-961f-82ee72b054a4
* Update Go library to r60.ian2011-09-161-31/+40
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@178910 138bc75d-0d04-0410-961f-82ee72b054a4
* Update to current version of Go library.ian2011-05-201-1/+1
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@173931 138bc75d-0d04-0410-961f-82ee72b054a4
* libgo: Always initialize semaphores.ian2011-04-041-0/+6
| | | | | | | | | | | | | | 2011-04-03 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> PR go/48222 * runtime/malloc.goc (runtime_mallocinit): Call runtime_Mprof_Init, runtime_initfintab. * runtime/cpuprof.c (runtime_cpuprofinit): New function. * runtime/runtime.h (runtime_cpuprofinit): Declare it. * runtime/go-main.c (main): Use it. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171960 138bc75d-0d04-0410-961f-82ee72b054a4
* Update to current version of Go library (revision 94d654be2064).ian2011-03-161-56/+160
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171076 138bc75d-0d04-0410-961f-82ee72b054a4
* Avoid deadlock creating new thread.ian2011-01-221-0/+8
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@169114 138bc75d-0d04-0410-961f-82ee72b054a4
* Remove the types float and complex.ian2011-01-211-0/+5
| | | | | | | | | | | | | Update to current version of Go library. Update testsuite for removed types. * go-lang.c (go_langhook_init): Omit float_type_size when calling go_create_gogo. * go-c.h: Update declaration of go_create_gogo. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@169098 138bc75d-0d04-0410-961f-82ee72b054a4
* Rework locking code to split stack much less.ian2010-12-171-0/+3
| | | | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167973 138bc75d-0d04-0410-961f-82ee72b054a4
* Add Go frontend, libgo library, and Go testsuite.ian2010-12-031-0/+341
gcc/: * gcc.c (default_compilers): Add entry for ".go". * common.opt: Add -static-libgo as a driver option. * doc/install.texi (Configuration): Mention libgo as an option for --enable-shared. Mention go as an option for --enable-languages. * doc/invoke.texi (Overall Options): Mention .go as a file name suffix. Mention go as a -x option. * doc/frontends.texi (G++ and GCC): Mention Go as a supported language. * doc/sourcebuild.texi (Top Level): Mention libgo. * doc/standards.texi (Standards): Add section on Go language. Move references for other languages into their own section. * doc/contrib.texi (Contributors): Mention that I contributed the Go frontend. gcc/testsuite/: * lib/go.exp: New file. * lib/go-dg.exp: New file. * lib/go-torture.exp: New file. * lib/target-supports.exp (check_compile): Match // Go. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167407 138bc75d-0d04-0410-961f-82ee72b054a4
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