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Commit Graph

9 Commits

Author SHA1 Message Date
Russ Cox
1334b794b7 libmach: remove old object file readers
These no longer work; removing them makes other refactoring easier.
The code for pack P being deleted in this CL does not work either.
I created issue 6989 to track restoring this functionality (probably not
until pack is written in Go).

R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/44300043
2013-12-20 12:10:53 -05:00
Russ Cox
7d734d9252 build: remove various uses of C undefined behavior
If you thought gcc -ansi -pedantic was pedantic, just wait
until you meet clang -fsanitize=undefined.

I think this addresses all the reported "errors", but we'll
need another run to be sure.

all.bash still passes.

Update #5764

Dave, can you please try again?

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/13334049
2013-09-09 15:07:23 -04:00
Dmitriy Vyukov
79dca0327e libbio, all cmd: consistently use BGETC/BPUTC instead of Bgetc/Bputc
Also introduce BGET2/4, BPUT2/4 as they are widely used.
Slightly improve BGETC/BPUTC implementation.
This gives ~5% CPU time improvement on go install -a -p1 std.
Before:
real		user		sys
0m23.561s	0m16.625s	0m5.848s
0m23.766s	0m16.624s	0m5.846s
0m23.742s	0m16.621s	0m5.868s
after:
0m22.999s	0m15.841s	0m5.889s
0m22.845s	0m15.808s	0m5.850s
0m22.889s	0m15.832s	0m5.848s

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12745047
2013-08-30 15:46:12 +04:00
Shenghou Ma
af375cde20 libmach, cmd/cc, cmd/cov, cmd/ld, cmd/prof: check malloc return value
Update #4415.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6856080
2012-11-27 03:05:46 +08:00
Jeffrey M Hodges
7dd47326e5 libmach: use the standardized format for designated initializers.
The brace style in these files are a little inconsistent so I rolled with
it on a per-file basis.

R=dave, r
CC=golang-dev
https://golang.org/cl/4515194
2011-06-06 06:56:09 +00:00
Dave Cheney
29cf90a4ef libmach: fix warnings.
Fixes #1706.

R=adg, rsc
CC=golang-dev
https://golang.org/cl/4413051
2011-04-14 23:58:08 -04:00
Russ Cox
3f61184e1b gc, ld: detect stale or incompatible object files
The object files begin with a header that is

        $GOARCH

on a line by itself.  This CL changes that header to

        go object $GOOS $GOARCH release.2011-01-01 4567+

where the final two fields are the most recent release
tag and the current hg version number.

All objects imported into a Go compilation or linked into an
executable must have the same header line, and that header
line must match the compiler and linker versions.

The effect of this will be that if you update and run all.bash
and then try to link in objects compiled with an earlier version
of the compiler (or invoke the wrong version of the compiler),
you will get an error showing the different headers instead
of perhaps silent incompatibility.

Normal usage with all.bash should be unaffected, because
all.bash deletes all the object files in $GOROOT/pkg/$GOOS_$GOARCH
and cleans all intermediate object files before starting.

This change is intended to diagnose stale objects arising when
users maintaining alternate installation directories forget to
rebuild some of their files after updating.

It should help make the adoption of $GOPATH (CL 3780043)
less error-prone.

R=ken2, r
CC=golang-dev
https://golang.org/cl/4023063
2011-02-03 13:51:43 -05:00
Russ Cox
e69f12ae1d two more if(h<0) that gcc 4.3 -O2 miscompiles
R=r
https://golang.org/cl/160044
2009-11-23 14:23:14 -08:00
Rob Pike
00274a13cb rename libmach_amd64 libmach
R=rsc
OCL=33273
CL=33276
2009-08-14 10:46:04 -07:00