delta/go-git.git/src/runtime/sys_linux_mips64x.s, branch dev.inline

runtime: use clock_gettime(CLOCK_REALTIME) for nanosecond-precision time.now on arm64, mips64x

2016-10-27T17:53:13+00:00

Assembly copied from the clock_gettime(CLOCK_MONOTONIC)
call in runtime.nanotime in these files and then modified to use
CLOCK_REALTIME.

Also comment system call numbers in a few other files.

Fixes #11222.

Change-Id: Ie132086de7386f865908183aac2713f90fc73e0d
Reviewed-on: https://go-review.googlesource.com/32177
Reviewed-by: Cherry Zhang

runtime: unify some signal handling functions

2016-09-24T01:39:48+00:00

Unify the OS-specific versions of msigsave, msigrestore, sigblock,
updatesigmask, and unblocksig into single versions in signal_unix.go.
To do this, make sigprocmask work the same way on all systems, which
required adding a definition of sigprocmask for linux and openbsd.
Also add a single OS-specific function sigmaskToSigset.

Change-Id: I7cbf75131dddb57eeefe648ef845b0791404f785
Reviewed-on: https://go-review.googlesource.com/29689
Run-TryBot: Ian Lance Taylor 
TryBot-Result: Gobot Gobot 
Reviewed-by: David Crawshaw

cmd/compile, runtime, etc: get rid of constant FP registers

2016-08-30T23:16:17+00:00

On ARM64, MIPS64, and PPC64, some floating point registers were
reserved for constants 0, 1, 2, 0.5, etc. This CL removes them.

On ARM64, they are never used. On MIPS64 and PPC64, the only use
case is a multiplication-by-2 in the old backend of the compiler,
which is replaced with an addition.

Change-Id: I737cbf43283756e3408964fc88c567a938c57036
Reviewed-on: https://go-review.googlesource.com/28095
Run-TryBot: Cherry Zhang 
Reviewed-by: David Chase 
TryBot-Result: Gobot Gobot

all: fix assembly vet issues

2016-08-25T18:52:31+00:00

Add missing function prototypes.
Fix function prototypes.
Use FP references instead of SP references.
Fix variable names.
Update comments.
Clean up whitespace. (Not for vet.)

All fairly minor fixes to make vet happy.

Updates #11041

Change-Id: Ifab2cdf235ff61cdc226ab1d84b8467b5ac9446c
Reviewed-on: https://go-review.googlesource.com/27713
Run-TryBot: Josh Bleecher Snyder 
TryBot-Result: Gobot Gobot 
Reviewed-by: Brad Fitzpatrick

runtime: add linux/mips64x cgo support

2016-05-04T16:41:10+00:00

Change-Id: Id40dd05b7b264f3b779fdf9ccc2421ba4bc70589
Reviewed-on: https://go-review.googlesource.com/19806
Reviewed-by: Minux Ma

cmd/internal/obj/mips et al.: introduce SB register on mips64x

2016-05-01T02:36:46+00:00

SB register (R28) is introduced for access external addresses with shorter
instruction sequences. It is loaded at entry points. External data within
2G of SB can be accessed this way.

cmd/internal/obj: relocaltion R_ADDRMIPS is split into two relocations
R_ADDRMIPS and R_ADDRMIPSU, handling the low 16 bits and the "upper" 16
bits of external addresses, respectively, since the instructios may not
be adjacent. It might be better if relocation Variant could be used.

cmd/link/internal/mips64: support new relocations.

cmd/compile/internal/mips64: reserve SB register.

runtime: initialize SB register at entry points.

Change-Id: I5f34868f88c5a9698c042a8a1f12f76806c187b9
Reviewed-on: https://go-review.googlesource.com/19802
Reviewed-by: Minux Ma

runtime: support symbolic backtrace of C code in a cgo crash

2016-04-01T04:13:44+00:00

The new function runtime.SetCgoTraceback may be used to register stack
traceback and symbolizer functions, written in C, to do a stack
traceback from cgo code.

There is a sample implementation of runtime.SetCgoSymbolizer at
github.com/ianlancetaylor/cgosymbolizer.  Just importing that package is
sufficient to get symbolic C backtraces.

Currently only supported on linux/amd64.

Change-Id: If96ee2eb41c6c7379d407b9561b87557bfe47341
Reviewed-on: https://go-review.googlesource.com/17761
Reviewed-by: Austin Clements

runtime: fix errno sign for some mmap and mincore cases

2016-02-12T00:07:29+00:00

The caller of mmap expects it to return a positive errno value, but the
linux-arm64 and nacl-386 system calls returned a negative errno value.
Correct them to negate the errno value.

The caller of mincore expects it to return a negative errno value (yes,
this is inconsistent), but the linux-mips64x and linux-ppc64x system
call returned a positive errno value.  Correct them to negate the errno
value.

Add a test that mmap returns errno with the correct sign.  Brad added a
test for mincore's errno value in https://golang.org/cl/19457.

Fixes #14297.

Change-Id: I2b93f32e679bd1eae1c9aef9ae7bcf0ba39521b5
Reviewed-on: https://go-review.googlesource.com/19455
Reviewed-by: Brad Fitzpatrick 
Reviewed-by: Minux Ma 
Run-TryBot: Ian Lance Taylor 
TryBot-Result: Gobot Gobot

runtime: added assembly part of linux/mips64{,le} support

2015-11-12T04:46:17+00:00

Change-Id: I9e94027ef66c88007107de2b2b75c3d7cf1352af
Reviewed-on: https://go-review.googlesource.com/14467
Reviewed-by: Minux Ma