Commit Graph

353 Commits

Author SHA1 Message Date
Ian Lance Taylor
453060a906 runtime: copy memory hash code from Go 1.7
Rewrite the AES hashing code from gc assembler to C code using
    intrinsics.  The resulting code generates the same hash code for the
    same input as the gc code--that doesn't matter as such, but testing it
    ensures that the C code does something useful.
    
    Also change mips64pe32le to mips64p32le in configure script--noticed
    during CL review.
    
    Reviewed-on: https://go-review.googlesource.com/34022

From-SVN: r243445
2016-12-08 16:37:54 +00:00
Ian Lance Taylor
b2264b0964 runtime: allocate _panic struct on heap
The gc library allocates a _panic struct on the stack. This does not
    work for gccgo, because when a deferred function recovers the panic we
    unwind the stack up to that point so that returning from the function
    will work correctly.
    
    Allocating on the stack fine if the panic is not recovered, and it
    works fine if the panic is recovered by a function that
    returns. However, it fails if the panic is recovered by a function
    that itself panics, and if that second panic is then recovered by a
    function higher up on the stack. When we unwind the stack to that
    second panic, the g will wind up pointing at a panic farther down on
    the stack. Even then everything will often work fine, except when the
    deferred function catching the second panic makes a bunch of calls
    that use stack space before returning. In that case the code can
    overwrite the panic struct, which will then cause disaster when we
    remove the struct from the linked list, as the link field will be
    garbage. This case is rare enough that all the x86 tests were passing,
    but there was a failure on ppc64le.
    
    Before https://golang.org/cl/33414 we allocated the panic struct on
    the heap, so go back to doing that again.
    
    Fixes golang/go#18228.
    
    Reviewed-on: https://go-review.googlesource.com/34027

From-SVN: r243444
2016-12-08 15:54:30 +00:00
Ian Lance Taylor
6e7f1be7ae runtime: set isarchive in initsig
The library initialization code in go-libmain.c sets the C variable
    runtime_isarchive but failed to set the Go variable runtime.isarchive.
    We don't currently have a way to let C code access an unexported Go
    variable, but fortunately the only time the Go function initsig is
    called with an argument of true is exactly where we want to set
    isarchive.  So let initsig do it.
    
    Reviewed-on: https://go-review.googlesource.com/33753

From-SVN: r243094
2016-12-01 05:47:58 +00:00
Ian Lance Taylor
24f1d7f80e runtime: print C functions in traceback
Since gccgo can trace back through C code as easily as Go code, we
    should print C functions in the traceback.
    
    This worked before https://golang.org/cl/31230 for a dumb reason.  The
    default value for runtime.traceback_cache was, and is, 2 << 2, meaning
    to print all functions.  The old C code for runtime_parsedebugvars
    would return immediately and do nothing if the environment variable
    GODEBUG was not set (if GODEBUG was set it would later call
    setTraceback.  The new Go code for runtime.parsedebugvars does not
    return immediately if GODEBUG is not set, and always calls
    setTraceback.  Either way, if GOTRACEBACK is not set, setTraceback
    would set traceback_cache to 1 << 2, meaning to only print non-runtime
    functions and having the effect of not printing plain C functions.
    
    Keep the current handling of GODEBUG/GOTRACEBACK, which matches the gc
    library, but add an extra check to print C functions by default.
    
    Reviewed-on: https://go-review.googlesource.com/33717

From-SVN: r243083
2016-11-30 20:28:28 +00:00
Ian Lance Taylor
fbe9724cc3 runtime: fixes for -buildmode=c-archive
With -buildmode=c-archive, initsig is called before the memory
    allocator has been initialized.  The code was doing a memory
    allocation because of the call to funcPC(sigtramp).  When escape
    analysis is fully implemented, that call should not allocate.  For
    now, finesse the issue by calling a C function to get the C function
    pointer value of sigtramp.
    
    When returning from a call from C to a Go function, a deferred
    function is run to go back to syscall mode.  When the call occurs on a
    non-Go thread, that call sets g to nil, making it impossible to add
    the _defer struct back to the pool.  Just drop it and let the garbage
    collector clean it up.
    
    Reviewed-on: https://go-review.googlesource.com/33675

From-SVN: r242992
2016-11-30 02:09:24 +00:00
Ian Lance Taylor
7239bf746a re PR go/77910 (go: open zversion.go: no such file or directory)
PR go/77910
    cmd/go: don't check standard packages when using gccgo
    
    This copies https://golang.org/cl/33295 to libgo.
    
    This fixes GCC PR 77910.
    
    Reviewed-on: https://go-review.googlesource.com/33471

From-SVN: r242724
2016-11-22 21:04:27 +00:00
Ian Lance Taylor
9d1e3afb54 runtime: rewrite panic/defer code from C to Go
The actual stack unwind code is still in C, but the rest of the code,
    notably all the memory allocation, is now in Go.  The names are changed
    to the names used in the Go 1.7 runtime, but the code is necessarily
    somewhat different.
    
    The __go_makefunc_can_recover function is dropped, as the uses of it
    were removed in https://golang.org/cl/198770044.
    
    Reviewed-on: https://go-review.googlesource.com/33414

From-SVN: r242715
2016-11-22 17:58:04 +00:00
Ian Lance Taylor
092dd2bc33 runtime: move schedt type and sched var from C to Go
This doesn't change any actual code, it just starts using the Go
    definition of the schedt type and the sched variable rather than the C
    definitions.
    
    The schedt type is tweaked slightly for gccgo.  We aren't going to
    release goroutine stacks, so we don't need separate gfreeStack and
    gfreeNostack lists.  We only have one size of defer function, so we
    don't need a list of 5 different pools.
    
    Reviewed-on: https://go-review.googlesource.com/33364

From-SVN: r242600
2016-11-18 17:48:29 +00:00
Ian Lance Taylor
d519aeda8b libgo: remove old/regexp and old/template
They were removed from the master Go library in 2012
    (https://golang.org/cl/5979046) but somehow that was not reflected here.
    
    Reviewed-on: https://go-review.googlesource.com/33391

From-SVN: r242592
2016-11-18 14:51:13 +00:00
Ian Lance Taylor
9bd0f0bc6b Correct gcc/go/gofrontend/lex.cc and libgo/aclocal.m4 to the versions in the gofrontend repo...
Correct gcc/go/gofrontend/lex.cc and libgo/aclocal.m4 to the versions
in the gofrontend repo, which is supposed to be the master copy.

Remove a few files in libgo that somehow were not deleted in the past.

From-SVN: r242583
2016-11-18 04:15:46 +00:00
Ian Lance Taylor
54f0deb00f Update libgo/configure to restore it to the master version.
Update a few binary files that were changed in the master gc repo,
copied into the gofrontend repo, but not correctly copied into the GCC
repo.  The changes are all minor and do not affect any actual tests.
Two instances of "http" changed to "https", and two timestamps were
zeroed out.

From-SVN: r242582
2016-11-18 04:05:10 +00:00
Ian Lance Taylor
5302cd0250 runtime, reflect: rewrite Go to FFI type conversion in Go
As we move toward the Go 1.7 garbage collector, it's essential that all
    allocation of values that can contain Go pointers be done using the
    correct type descriptor.  That is simplest if we do all such allocation
    in Go code.  This rewrites the code that converts from a Go type to a
    libffi CIF into Go.
    
    Reviewed-on: https://go-review.googlesource.com/33353

From-SVN: r242578
2016-11-18 00:15:38 +00:00
Ian Lance Taylor
350767bf22 runtime: replace runtime1.goc with Go and C code
A step toward eliminating goc2c.
    
    Drop the exported parfor code; it was needed for tests in the past, but
    no longer is. The Go 1.7 runtime no longer uses parfor.
    
    Reviewed-on: https://go-review.googlesource.com/33324

From-SVN: r242509
2016-11-16 18:33:11 +00:00
Ian Lance Taylor
7b9f5ceef1 runtime: don't crash if signal handler info argument is nil
Apparently on Solaris 10 a SA_SIGINFO signal handler can be invoked with
    a nil info argument.  I would not have believed it but I've now seen it
    happen, and the sigaction man page actually says "If the second argument
    is not equal to NULL, it points to a siginfo_t structure...."  So, if
    that happens, don't crash.
    
    Also fix another case where we want to make sure that &T{} does not
    allocate.
    
    Reviewed-on: https://go-review.googlesource.com/33150

From-SVN: r242403
2016-11-14 23:16:04 +00:00
Ian Lance Taylor
980f9a0a4b runtime: copy signal code from Go 1.7 runtime
Add a little shell script to auto-generate runtime.sigtable from the
    known signal names.
    
    Force the main package to always import the runtime package.  Otherwise
    some runtime package global variables may never be initialized.
    
    Set the syscallsp and syscallpc fields of g when entering a syscall, so
    that the runtime package knows when a g is executing a syscall.
    
    Fix runtime.funcPC to avoid dead store elimination of the interface
    value when the function is inlined.
    
    Reviewed-on: https://go-review.googlesource.com/33025

From-SVN: r242060
2016-11-10 22:53:23 +00:00
Ian Lance Taylor
69907c4ad5 runtime: recreate function called by cgo -gccgo
When using cgo -gccgo calls to C.GoString, C.GoStringN, and C.GoBytes
    are turned into calls to __go_byte_array_to_string and
    __go_string_to_byte_array.  Those functions were removed when the string
    code was copied from Go 1.7, but we still need them for cgo.  While cgo
    should be updated, old versions will exist for some time.
    
    Reviewed-on: https://go-review.googlesource.com/32474

From-SVN: r241743
2016-11-01 14:07:43 +00:00
Ian Lance Taylor
94f56408db compiler, runtime: copy slice code from Go 1.7 runtime
Change the compiler handle append as the gc compiler does: call a
    function to grow the slice, but otherwise assign the new elements
    directly to the final slice.
    
    For the current gccgo memory allocator the slice code has to call
    runtime_newarray, not mallocgc directly, so that the allocator sets the
    TypeInfo_Array bit in the type pointer.
    
    Rename the static function cnew to runtime_docnew, so that the stack
    trace ignores it when ignoring runtime functions.  This was needed to
    fix the runtime/pprof tests on 386.
    
    Reviewed-on: https://go-review.googlesource.com/32218

From-SVN: r241667
2016-10-28 22:34:47 +00:00
Ian Lance Taylor
a5742b0158 re PR go/78144 (FAIL: time on systems with tzdata2016g installed)
PR go/78144
    libgo: incorporate fix for timezone test
    
    This brings over the test-only fix for issue 17276 into gccgo/libgo
    (with tzdata-2016g there is a new zone abbreviation).  This is a
    copy of https://golang.org/cl/29995.
    
    Reviewed-on: https://go-review.googlesource.com/32182

From-SVN: r241661
2016-10-28 20:21:52 +00:00
Ian Lance Taylor
0dfeae289c re PR go/78143 (bootstrap broken in libgo on powerpc-linux-gnu)
PR go/78143
    runtime: build lfstack_32bit.go on ppc
    
    Missed a build tag.  This is GCC PR 78143.
    
    Reviewed-on: https://go-review.googlesource.com/32295

From-SVN: r241659
2016-10-28 18:57:36 +00:00
Ian Lance Taylor
e597e0533d runtime: copy lfstack code from Go 1.7 runtime
Note that lfstack_64bit.go was modified for Solaris support in a
    different, and better, way than the superseded lfstack.goc code.
    
    Reviewed-on: https://go-review.googlesource.com/31673

From-SVN: r241427
2016-10-21 20:07:06 +00:00
Ian Lance Taylor
6b752cfac4 runtime: rewrite interface code into Go
I started to copy the Go 1.7 interface code, but the gc and gccgo
    representations of interfaces are too different.  So instead I rewrote
    the gccgo interface code from C to Go.  The code is largely the same as
    it was, but the names are more like those used in the gc runtime.
    
    I also copied over the string comparison functions, and tweaked the
    compiler to use eqstring when comparing strings for equality.
    
    Reviewed-on: https://go-review.googlesource.com/31591

From-SVN: r241384
2016-10-20 18:51:35 +00:00
Ian Lance Taylor
29849c91e4 runtime, syscall: force EPOLLET to be positive
The C definition is 1U << 31.  Reportedly on some systems GCC's
    -fgo-dump-spec can print this as -2147483648.
    
    Reviewed-on: https://go-review.googlesource.com/31448

From-SVN: r241347
2016-10-19 16:53:13 +00:00
Ian Lance Taylor
812ba636c7 runtime: copy netpoll code from Go 1.7 runtime
Reviewed-on: https://go-review.googlesource.com/31325

From-SVN: r241307
2016-10-18 14:38:29 +00:00
Ian Lance Taylor
8cce07d1dd runtime: copy rdebug code from Go 1.7 runtime
While we're at it, update the runtime/debug package, and start running
    its testsuite by default.  I'm not sure why runtime/debug was not
    previously updated to 1.7.  Doing that led me to fix some minor aspects
    of runtime.Stack and the C function runtime/debug.readGCStats.
    
    Reviewed-on: https://go-review.googlesource.com/31251

From-SVN: r241261
2016-10-17 16:54:25 +00:00
Ian Lance Taylor
35d9424444 runtime: copy runtime package time code from Go 1.7
Fix handling of function values for -fgo-c-header to generate FuncVal*,
    not simply FuncVal.
    
    While we're here change runtime.nanotime to use clock_gettime with
    CLOCK_MONOTONIC, rather than gettimeofday.  This is what the gc library
    does.  It provides nanosecond precision and a monotonic clock.
    
    Reviewed-on: https://go-review.googlesource.com/31232

From-SVN: r241197
2016-10-15 00:29:06 +00:00
Ian Lance Taylor
1f0be9ee86 runtime: copy mprof code from Go 1.7 runtime
Also create a gccgo version of some of the traceback code in
    traceback_gccgo.go, replacing some code currently in C.
    
    This required modifying the compiler so that when compiling the runtime
    package a slice expression does not cause a local array variable to
    escape to the heap.
    
    Reviewed-on: https://go-review.googlesource.com/31230

From-SVN: r241189
2016-10-14 22:51:46 +00:00
Ian Lance Taylor
db2fb304fe runtime: just do file/line lookup in C, move Func to Go
In order to port stack backtraces to Go, we need the ability to look up
    file/line information for PC values without allocating memory.  This
    patch moves the handling of Func from C code to Go code, and simplifies
    the C code to just look up function/file/line/entry information for a PC.
    
    Reviewed-on: https://go-review.googlesource.com/31150

From-SVN: r241172
2016-10-14 17:20:40 +00:00
Ian Lance Taylor
d2c4425e86 debug/elf: add sparc64 relocations
This is a backport of https://go-review.googlesource.com/30870.
    
    Reviewed-on: https://go-review.googlesource.com/30916

From-SVN: r241171
2016-10-14 17:16:55 +00:00
Ian Lance Taylor
238fc3441c runtime: copy cpuprof code from Go 1.7 runtime
This replaces runtime/cpuprof.goc with go/runtime/cpuprof.go and adjusts
    the supporting code in runtime/proc.c.
    
    This adds another case where the compiler needs to avoid heap allocation
    in the runtime package: when evaluating a method expression into a
    closure.  Implementing this required moving the relevant code from
    do_get_backend to do_flatten, so that I could easily add a temporary
    variable.  Doing that let me get rid of Bound_method_expression::do_lower.
    
    Reviewed-on: https://go-review.googlesource.com/31050

From-SVN: r241163
2016-10-14 13:36:35 +00:00
Ian Lance Taylor
58f7dab40d runtime: copy mstats code from Go 1.7 runtime
This replaces mem.go and the C runtime_ReadMemStats function with the Go
    1.7 mstats.go.
    
    The GCStats code is commented out for now.  The corresponding gccgo code
    is in runtime/mgc0.c.
    
    The variables memstats and worldsema are shared between the Go code and
    the C code, but are not exported.  To make this work, add temporary
    accessor functions acquireWorldsema, releaseWorldsema, getMstats (the
    latter known as mstats in the C code).
    
    Check the preemptoff field of m when allocating and when considering
    whether to start a GC.  This works with the new stopTheWorld and
    startTheWorld functions in Go, which are essentially the Go 1.7
    versions.
    
    Change the compiler to stack allocate closures when compiling the
    runtime package.  Within the runtime packages closures do not escape.
    This is similar to what the gc compiler does, except that the gc
    compiler, when compiling the runtime package, gives an error if escape
    analysis shows that a closure does escape.  I added this here because
    the Go version of ReadMemStats calls systemstack with a closure, and
    having that allocate memory was causing some tests that measure memory
    allocations to fail.
    
    Reviewed-on: https://go-review.googlesource.com/30972

From-SVN: r241124
2016-10-13 15:24:50 +00:00
Ian Lance Taylor
80b489ebba syscall: don't use pt_regs in clone_linux.c
It's unnecessary and it reportedly breaks the build on arm64 GNU/Linux.
    
    Reviewed-on: https://go-review.googlesource.com/30978

From-SVN: r241084
2016-10-13 04:19:57 +00:00
Ian Lance Taylor
1ad16c5284 compiler, runtime: copy string code from Go 1.7
Add compiler support for turning concatenating strings into a call to
    a runtime function that takes the appropriate number of arguments.
    
    Rename some local variables in mgc0.c to avoid macros that the new
    rune.go causes to appear in runtime.inc.
    
    Reviewed-on: https://go-review.googlesource.com/30827

From-SVN: r241074
2016-10-12 18:17:52 +00:00
Ian Lance Taylor
fa8e596366 syscall: mark rawClone as no_split_stack
Reviewed-on: https://go-review.googlesource.com/30955

From-SVN: r241072
2016-10-12 17:42:49 +00:00
Ian Lance Taylor
543f217b7a runtime: copy Go 1.7 runtime semaphore code
This triggered a check in releaseSudog that g.param not nil, because
    libgo uses the param field when starting a goroutine.  Fixed by clearing
    g->param in kickoff in proc.c.
    
    Reviewed-on: https://go-review.googlesource.com/30951

From-SVN: r241067
2016-10-12 15:38:56 +00:00
Ian Lance Taylor
c8dc49fb03 syscall, internal/syscall/unix: Fix getrandom, clone on sparc64
Since sparc is a valid architecture, the name of
    getrandom_linux_sparc.go means that it will be ignored on sparc64,
    even though it's whitelisted with a +build line.
    
    On SPARC, clone has a unique return value convention which requires
    some inline assembly to convert it to the normal convention.
    
    Reviewed-on: https://go-review.googlesource.com/30873

From-SVN: r241051
2016-10-12 14:28:05 +00:00
Ian Lance Taylor
abe08b7d90 Accidentally failed to commit these earlier, as part of:
Update the compiler to use the new names.  Add calls to printlock and
    printunlock around print statements.  Move expression evaluation before
    the call to printlock.  Update g's writebuf field to a slice, and adjust
    C code accordingly.

    Reviewed-on: https://go-review.googlesource.com/30717

From-SVN: r240958
2016-10-11 00:08:35 +00:00
Ian Lance Taylor
65180edc56 runtime: copy print/println support from Go 1.7
Update the compiler to use the new names.  Add calls to printlock and
    printunlock around print statements.  Move expression evaluation before
    the call to printlock.  Update g's writebuf field to a slice, and adjust
    C code accordingly.
    
    Reviewed-on: https://go-review.googlesource.com/30717

From-SVN: r240956
2016-10-10 23:13:39 +00:00
Ian Lance Taylor
5d8c099ede runtime: copy channel code from Go 1.7 runtime
Change the compiler to use the new routines. Drop the separation of
    small and large values when sending on a channel. Allocate the select
    struct on the stack. Remove the old C implementation of channels. Adjust
    the garbage collector for the new data structure.
    
    Bring in part of the tracing code, enough for the channel code to call.
    
    Bump the permitted number of allocations in one of the tests in
    context_test.go. The difference is that now receiving from a channel
    allocates a sudog, which the C code used to simply put on the
    stack. This will be somewhat better when we port proc.go.
    
    Reviewed-on: https://go-review.googlesource.com/30714

From-SVN: r240941
2016-10-10 16:52:09 +00:00
Ian Lance Taylor
c0401cf78c runtime: copy internal locking code from Go 1.7 runtime
Remove the old locking code written in C.
    
    Add a shell script mkrsysinfo.sh to generate the runtime_sysinfo.go
    file, so that we can get Go copies of the system time structures and
    other types.
    
    Tweak the compiler so that when compiling the runtime package the
    address operator does not cause local variables to escape.  When the gc
    compiler compiles the runtime, an escaping local variable is treated as
    an error.  We should implement that, instead of this change, when escape
    analysis is turned on.
    
    Tweak the compiler so that the generated C header does not include names
    that start with an underscore followed by a non-upper-case letter,
    except for the special cases of _defer and _panic.  Otherwise we
    translate C types to Go in runtime_sysinfo.go and then generate those Go
    types back as C types in runtime.inc, which is useless and painful for
    the C code.
    
    Change entersyscall and friends to take a dummy argument, as the gc
    versions do, to simplify calls from the shared code.
    
    Reviewed-on: https://go-review.googlesource.com/30079

From-SVN: r240657
2016-09-30 13:45:08 +00:00
Ian Lance Taylor
6748787813 runtime: copy runtime.go and runtime1.go from Go 1.7
Also copy over cputicks.go, env_posix.go, vdso_none.go, stubs2.go, and a
    part of os_linux.go.  Remove the corresponding functions from the C code
    in libgo/go/runtime.  Add some transitional support functions to
    stubs.go.  This converts several minor functions from C to Go.
    
    Reviewed-on: https://go-review.googlesource.com/29962

From-SVN: r240609
2016-09-29 00:56:44 +00:00
Ian Lance Taylor
6465652c87 internal/syscall/unix: add getrandom syscall for MIPS and SPARC
Reviewed-on: https://go-review.googlesource.com/29678

From-SVN: r240457
2016-09-23 21:00:43 +00:00
Ian Lance Taylor
4a2bb7fcb0 compiler, runtime: replace hashmap code with Go 1.7 hashmap
This change removes the gccgo-specific hashmap code and replaces it with
    the hashmap code from the Go 1.7 runtime.  The Go 1.7 hashmap code is
    more efficient, does a better job on details like when to update a key,
    and provides some support against denial-of-service attacks.
    
    The compiler is changed to call the new hashmap functions instead of the
    old ones.
    
    The compiler now tracks which types are reflexive and which require
    updating when used as a map key, and records the information in map type
    descriptors.
    
    Map_index_expression is simplified.  The special case for a map index on
    the right hand side of a tuple expression has been unnecessary for some
    time, and is removed.  The support for specially marking a map index as
    an lvalue is removed, in favor of lowering an assignment to a map index
    into a function call.  The long-obsolete support for a map index of a
    pointer to a map is removed.
    
    The __go_new_map_big function (known to the compiler as
    Runtime::MAKEMAPBIG) is no longer needed, as the new runtime.makemap
    function takes an int64 hint argument.
    
    The old map descriptor type and supporting expression is removed.
    
    The compiler was still supporting the long-obsolete syntax `m[k] = 0,
    false` to delete a value from a map.  That is now removed, requiring a
    change to one of the gccgo-specific tests.
    
    The builtin len function applied to a map or channel p is now compiled
    as `p == nil ? 0 : *(*int)(p)`.  The __go_chan_len function (known to
    the compiler as Runtime::CHAN_LEN) is removed.
    
    Support for a shared zero value for maps to large value types is
    introduced, along the lines of the gc compiler.  The zero value is
    handled as a common variable.
    
    The hash function is changed to take a seed argument, changing the
    runtime hash functions and the compiler-generated hash functions.
    Unlike the gc compiler, both the hash and equal functions continue to
    take the type length.
    
    Types that can not be compared now store nil for the hash and equal
    functions, rather than pointing to functions that throw.  Interface hash
    and comparison functions now check explicitly for nil.  This matches the
    gc compiler and permits a simple implementation for ismapkey.
    
    The compiler is changed to permit marking struct and array types as
    incomparable, meaning that they have no hash or equal function.  We use
    this for thunk types, removing the existing special code to avoid
    generating hash/equal functions for them.
    
    The C runtime code adds memclr, memequal, and memmove functions.
    
    The hashmap code uses go:linkname comments to make the functions
    visible, as otherwise the compiler would discard them.
    
    The hashmap code comments out the unused reference to the address of the
    first parameter in the race code, as otherwise the compiler thinks that
    the parameter escapes and copies it onto the heap.  This is probably not
    needed when we enable escape analysis.
    
    Several runtime map tests that ere previously skipped for gccgo are now
    run.
    
    The Go runtime picks up type kind information and stubs.  The type kind
    information causes the generated runtime header file to define some
    constants, including `empty`, and the C code is adjusted accordingly.
    
    A Go-callable version of runtime.throw, that takes a Go string, is
    added to be called from the hashmap code.
    
    Reviewed-on: https://go-review.googlesource.com/29447

	* go.go-torture/execute/map-1.go: Replace old map deletion syntax
	with call to builtin delete function.

From-SVN: r240334
2016-09-21 20:58:51 +00:00
Ian Lance Taylor
321f72a231 syscall: build export_unix_test.go on solaris
Patch from Rainer Orth.
    
    Reviewed-on: https://go-review.googlesource.com/29436

From-SVN: r240285
2016-09-20 18:26:55 +00:00
Ian Lance Taylor
a846424359 runtime/internal/sys: new package, API copied from Go 1.7
Copy over the Go 1.7 runtime/internal/sys package, but instead of having
    separate files for each GOARCH and GOOS value, set the values in
    configure.ac and write them out in Makefile.am.  Setting the values in
    configure.ac should make it easier to add new processors.
    
    Remove the automake GOARCH conditionals, which are no longer used.
    Leave the GOOS conditionals for now, as they are used for the C runtime
    package.
    
    Reviewed-on: https://go-review.googlesource.com/29018

From-SVN: r240083
2016-09-11 13:23:27 +00:00
Ian Lance Taylor
af4b8a5233 libgo: update to Go 1.7.1 release
Reviewed-on: https://go-review.googlesource.com/29012

From-SVN: r240071
2016-09-10 13:14:00 +00:00
Ian Lance Taylor
337fa50b7b runtime/internal/atomic: new package, API copied from Go 1.7
Copy over the Go 1.7 runtime/internal/atomic package, but implement the
    functions in C using __atomic functions rather than using the
    processor-specific assembler code.
    
    Reviewed-on: https://go-review.googlesource.com/29010

From-SVN: r240070
2016-09-10 12:21:59 +00:00
Ian Lance Taylor
6f02c13813 runtime: align ucontext_t argument to 16 byte boundary
Some systems, such as ia64 and PPC, require that a ucontext_t pointer
    passed to getcontext and friends be aligned to a 16-byte boundary.
    Currently the ucontext_t fields in the g structure are defined in Go,
    and Go has no way to ensure a 16-byte alignment for a struct field.
    The fields are currently represented by an array of unsafe.Pointer.
    Enforce the alignment by making the array larger, and picking an offset
    into the array that is 16-byte aligned.
    
    Reviewed-on: https://go-review.googlesource.com/28910

From-SVN: r240044
2016-09-09 13:31:49 +00:00
Ian Lance Taylor
75791bab05 runtime: use -fgo-c-header to build C header file
Use the new -fgo-c-header option to build a header file for the Go
    runtime code in libgo/go/runtime, and use the new header file in the C
    runtime code in libgo/runtime.  This will ensure that the Go code and C
    code share the same data structures as we convert the runtime from C to
    Go.
    
    The new file libgo/go/runtime/runtime2.go is copied from the Go 1.7
    release, and then edited to remove unnecessary data structures and
    modify others for use with libgo.
    
    The new file libgo/go/runtime/mcache.go is an initial version of the
    same files in the Go 1.7 release, and will be replaced by the Go 1.7
    file when we convert to the new memory allocator.
    
    The new file libgo/go/runtime/type.go describes the gccgo version of the
    reflection data structures, and replaces the Go 1.7 runtime file which
    describes the gc version of those structures.
    
    Using the new header file means changing a number of struct fields to
    use Go naming conventions (that is, no underscores) and to rename
    constants to have a leading underscore so that they are not exported
    from the Go package.  These names were updated in the C code.
    
    The C code was also changed to drop the thread-local variable m, as was
    done some time ago in the gc sources.  Now the m field is always
    accessed using g->m, where g is the single remaining thread-local
    variable.  This in turn required some adjustments to set g->m correctly
    in all cases.
    
    Also pass the new -fgo-compiling-runtime option when compiling the
    runtime package, although that option doesn't do anything yet.
    
    Reviewed-on: https://go-review.googlesource.com/28051

From-SVN: r239872
2016-08-30 21:07:47 +00:00
Ian Lance Taylor
87155d4f6c cmd/go: ignore errors from go/build for standard packages
The go/build package does not know that gccgo's standard packages don't
    have source, and will report an error saying that it can not find them.
    Work around that in the cmd/go sources, since the go/build sources don't
    currently have a list of standard packages.
    
    This should get a real fix in the master sources, somehow.
    
    Fixes golang/go#16701.
    
    Reviewed-on: https://go-review.googlesource.com/27052

From-SVN: r239486
2016-08-15 18:05:24 +00:00
Ian Lance Taylor
237673d052 crypto/aes, hash/crc32: ignore s390x specific files for now
These files are used to select s390x assembler support in the gc
    toolchain.  We don't currently have that support, as it is written in
    the cmd/asm syntax rather than gas syntax.  Mark the files to be ignored
    for now, falling back to the default implementations.
    
    Patch by Andreas Krebbel.
    
    Reviewed-on: https://go-review.googlesource.com/26994

From-SVN: r239442
2016-08-13 00:19:56 +00:00