LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/123170043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/125990043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/123940043

LGTM=rsc
R=rsc, iant, dave
CC=golang-codereviews
https://golang.org/cl/119640043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/125910043

Without this CL, simply running mkall.sh for Linux will generate duplicated constants
for termios. I verified that after this CL, mkall.sh will generate almost identical
z* files for linux/amd64.

LGTM=rsc
R=rsc, iant, r
CC=golang-codereviews
https://golang.org/cl/124990043

Workaround a qemu linux user space emulation bug.
ref: http://git.qemu.org/?p=qemu.git;a=blob;f=linux-user/signal.c;h=1141054be2170128d6f7a340b41484b49a255936;hb=HEAD#l82

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/124900043

Also make it more portable by not hardcoding pointer sizes.

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/127780043

It was accidentally removed.

LGTM=dave
R=rsc, iant, dave
CC=golang-codereviews
https://golang.org/cl/124880043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/121370043

[dev.power64] liblink: handle $i64. symbols, add debug output for -S -v, show rel addend in hex for RISC arches

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/127770043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/121380043

The cmd/cc bundled with 9c has additional code compared to our cmd/cc, and
without those code, 9c couldn't handle switch statement where the expression
is not just a simple int32 or int64 variable (e.g. g->status or int8 variable).

All credit goes to rsc.

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/125840043

This replaces CL 122990043.

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/123010043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/128720044

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/127730043

LGTM=dave, rsc
R=rsc, iant, dave
CC=golang-codereviews
https://golang.org/cl/124840043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/126800043

To reduce delta for the upcoming liblink CL.
Just code movement, no semantic changes.

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/124830043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/117670045

After CL 117670045, cmd/dist will expect to have a cmd/9g directory.

LGTM=rsc, dave
R=rsc, iant, dave
CC=golang-codereviews
https://golang.org/cl/126780043

No modifications other than adding copyright header to each file, and
concatenating several cmd/9l files together to form the liblink files.

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/123840043

LGTM=rsc
R=rsc, iant
CC=golang-codereviews
https://golang.org/cl/125760043

LGTM=minux
R=minux
CC=golang-codereviews
https://golang.org/cl/124820043

Causes server 500 error, so don't do it.

TBR=minux
CC=golang-codereviews
https://golang.org/cl/125770043

hg insists that we not list explicit files for a merge.

for benefit of other tools reading logs, include branch prefix
at start of every commit message.

LGTM=minux
R=minux
CC=golang-codereviews
https://golang.org/cl/124780044

1) The arrayindexof lookup function is O(n). Replace with O(1) lookups.

2) The checkptxt function is O(n²) and is purely for debugging.
Only run when the debugging flags are turned on.

3) Iterating over sparse bitmaps can be done faster word by word.
Introduce and use bvnext for that.

Run times before and after, on my 2.5 GHz Core i5 MacBook Pro.

x.go       9.48  0.84  issue 8259

x100.go    0.01  0.01  issue 8354
x1000.go   0.10  0.10
x2000.go   0.62  0.19
x3000.go   1.33  0.34
x4000.go   2.29  0.49
x5000.go   3.89  0.67
x6000.go   5.00  0.90
x7000.go   6.70  1.13
x8000.go   9.44  1.38
x9000.go  11.23  1.87
x10000.go 13.78  2.09

Fixes #8259.
Fixes #8354.

LGTM=iant, r
R=golang-codereviews, iant, r
CC=golang-codereviews
https://golang.org/cl/125720043

LGTM=minux
R=minux
CC=golang-codereviews
https://golang.org/cl/124810043

LGTM=minux
R=minux
CC=golang-codereviews
https://golang.org/cl/118690043

LGTM=minux
R=minux
CC=golang-codereviews
https://golang.org/cl/124800043

LGTM=minux
R=minux
CC=golang-codereviews
https://golang.org/cl/120690043

The linker currently produces the DWARF 3 DW_TAG_unspecified_type tag, however the Reader in debug/dwarf will panic whenever that tag is encountered.

Fixes #8437.

LGTM=rsc
R=golang-codereviews, bradfitz, iant, rsc
CC=golang-codereviews
https://golang.org/cl/117280043

Generated by a+c.

R=gobot
CC=golang-codereviews
https://golang.org/cl/125750043

LGTM=dave, minux, aram
R=minux, dave, bradfitz, aram
CC=golang-codereviews
https://golang.org/cl/119470043

This is an experiment. See mail on golang-dev
(subject: "an experiment: development branches").

LGTM=minux
R=minux
CC=golang-codereviews
https://golang.org/cl/117660043

It can happen legitimately if a profiling signal arrives at just the wrong moment.
It's harmless.

Fixes #8153.

LGTM=minux
R=golang-codereviews, minux
CC=golang-codereviews, iant, r
https://golang.org/cl/118670043

Revised version of https://golang.org/cl/81260045/

LGTM=agl
R=golang-codereviews, gobot, agl, ox
CC=golang-codereviews
https://golang.org/cl/107400043

Fixes #8478.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/122150043