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  1. 24 Mar, 2015 2 commits
    • re PR go/65417 (debug/elf: lacks support for PPC relocations) · e93870c1 
      	PR go/65417
debug/elf: support reading debug info from 32-bit PPC objects

This is a backport of http://golang.org/7590 from the master
Go library.

From-SVN: r221644
      Ian Lance Taylor committed
    • re PR go/65462 (Use of 'go get' with gccgo is not finding dependencies correctly) · ab24432b 
      	PR go/65462
cmd: Fix dependencies for 'go get' with gccgo

Problem described in GCC BZ 65462.
Generate the list of the standard GO package names based on what was built into libgo in the libgo Makefile.
Change the var name from reqPkgSrc to reqStdPkgSrc to clarify it only affects standard GO packages.
Skip the attempted loading of a package only if it is a standard GO package and the flag is set indicating its source is not required to be available.
This requires a corresponding change to gotools to build and link in the new file containing the list of standard GO package names that was generated by the libgo Makefile.

gotools/:
	PR go/65462
	* Makefile.am (go_cmd_go_files): Add $(libgodir)/zstdpkglist.go.
	* Makefile.in: Rebuild.

From-SVN: r221643
      Ian Lance Taylor committed
  3. 13 Mar, 2015 1 commit
  5. 12 Mar, 2015 2 commits
  7. 10 Mar, 2015 1 commit
  9. 09 Mar, 2015 2 commits
  11. 06 Mar, 2015 1 commit
  13. 06 Feb, 2015 2 commits
    • mksysinfo.sh: Remove _zone_net_addr_t handling. · 898c81f8 
      From Rainer Orth.

The recent godump changes broke Solaris 11.1+ bootstrap in
libgo: before, gen-sysinfo.so had

type _zone_net_addr_t struct { zna_family uint16; zna_plen uint16; zna_addru struct { znau_addr6 _in6_addr; }; }

which was filtered out by mksysinfo.sh due to the use of
_in6_addr.

After the change, there's now

type _zone_net_addr_t struct { zna_family uint16; zna_plen uint16; zna_addru struct { znau_addr6 [16]byte; Godump_0_align [0]uint32; }; }

instead, not filtered, but added a second time by the
_zone_net_addr_t code in mksysinfo.sh, which leads to
redefinition warnings/errors.

Simply removing the old _zone_net_addr_t fragment fixes this
and restores bootstrap.

From-SVN: r220481
      Ian Lance Taylor committed
    • runtime: Add memprofilerate to GODEBUG · 8c5c44aa 
      Add memprofilerate as a value recognized
in the GODEBUG env var.  The value provided
is used as the new setting for
runtime.MemProfileRate, allowing the user
to adjust memory profiling.

From-SVN: r220470
      Ian Lance Taylor committed
  15. 03 Feb, 2015 1 commit
  17. 23 Jan, 2015 3 commits
  19. 21 Jan, 2015 1 commit
  21. 20 Jan, 2015 2 commits
  23. 19 Jan, 2015 2 commits
  25. 16 Jan, 2015 5 commits
    • runtime: Add __sparc__ case for SETCONTEXT_CLOBBERS_TLS. · 0f59f5c1 
      The glibc setcontext incorrectly modifies %g7 on SPARC.

From Richard Henderson.

From-SVN: r219778
      Ian Lance Taylor committed
    • testing/quick: Revert Alpha specific change. · 20780a00 
      No longer needed now that libffi supports complex types.

From-SVN: r219777
      Ian Lance Taylor committed
    • compiler, reflect, runtime: Use static chain for closures. · 38bf819a 
      Change from using __go_set_closure to passing the closure
value in the static chain field.  Uses new backend support for
setting the closure chain in a call from C via
__builtin_call_with_static_chain.  Uses new support in libffi
for Go closures.

The old architecture specific support for reflect.MakeFunc is
removed, replaced by the libffi support.

All work done by Richard Henderson.

	* go-gcc.cc (Gcc_backend::call_expression): Add chain_expr argument.
	(Gcc_backend::static_chain_variable): New method.

From-SVN: r219776
      Richard Henderson committed
    • net: Restore earlier Solaris-specific version of setKeepAlivePeriod. · 72d7151a 
      The version from the master repository seems to be appropriate
for OpenSolaris but not for Solaris itself.  Solaris 11.2
proper does not define TCP_KEEPIDLE or TCP_KEEPINTVL.

From-SVN: r219749
      Ian Lance Taylor committed
    • runtime: Use a struct, not void, for an empty struct for libffi. · cb054b63 
      A recent libffi upgrade caused the reflect test to fail on
386.  The problem case is a function that returns an empty
struct--a struct with no fields.  The libffi library does not
recognize the existence of empty structs, presumably since
they can't happen in C.  To work around this, the Go interface
to the libffi library changes an empty struct to void.  This
normally works fine, but with the new libffi upgrade it fails
for a function that returns an empty struct.  On 386 a
function that returns a struct is expected to pop the hidden
pointer when it returns.  So when we convert an empty struct
to void, libffi is calling a function that pops the hidden
pointer but does not expect that to happen.

In the older version of libffi, this didn't matter, because
the libffi code for 386 used a frame pointer, so the fact that
the stack pointer was wonky when the function returned was
ignored as the stack pointer was immediately replaced by the
saved frame pointer.  In the newer version of libffi, the 386
code is more efficient and does not use a frame pointer, and
therefore it matters whether libffi expects the function to
pop the hidden pointer or not.

This patch changes libgo to convert an empty to a struct with
a single field of type void.  This seems to be enough to get
the test cases working again.

Of course the real fix would be to change libffi to handle
empty types, but as libffi uses size == 0 as a marker for an
uninitialized type, that would be a non-trivial change.

From-SVN: r219701
      Ian Lance Taylor committed
  27. 15 Jan, 2015 5 commits
  29. 10 Jan, 2015 1 commit
  31. 09 Jan, 2015 1 commit
  33. 08 Jan, 2015 1 commit
  35. 06 Jan, 2015 1 commit
  37. 05 Jan, 2015 1 commit
  39. 23 Dec, 2014 1 commit
  41. 17 Dec, 2014 1 commit
  43. 13 Dec, 2014 3 commits
    • re PR go/61258 (gccgo: assertion failure go-map-delete.c:37 [GoSmith]) · 9ac18f8c 
      	PR go/61258
runtime: Don't crash when deleting zero-sized key.

From-SVN: r218702
      Ian Lance Taylor committed
    • testing: Add testing.MainStart function. · e846322c 
      This patches in the Go 1.4 function, for convenience for
people using the Go 1.4 go tool with mainline gccgo.

From-SVN: r218700
      Ian Lance Taylor committed
    • runtime: Clear stack pointers for extra G's. · c31fc2f4 
      Fix an unusual C to Go callback case.  Newly created C threads
call into Go code, forcing the Go code to allocate new M and G
structures.  While executing Go code, the stack is split.  The
Go code then returns.  Returning from a Go callback is treated
as entering a system call, so the G gcstack field is set to
point to the Go stack.  In this case, though, we were called
from a newly created C thread, so we drop the extra M and G
structures.  The C thread then exits.

Then a new C thread calls into Go code, reusing the previously
created M and G.  The Go code requires a larger stack frame,
causing the old stack segment to be unmapped and a new stack
segment allocated.  At this point the gcstack field is
pointing to the old stack segment.

Then a garbage collection occurs.  The garbage collector sees
that the gcstack field is not nil, so it scans it as the first
stack segment.  Unfortunately it points to memory that was
unmapped.  So the program crashes.

The fix is simple: when handling extra G structures created
for callbacks from new C threads, clear the gcstack field.

From-SVN: r218699
      Ian Lance Taylor committed