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36 Commits

Author SHA1 Message Date
Anthony Martin
d89b7173c2 5c, 6c, 8c: support 64-bit switch value 
For real this time. :-)

R=rsc, ken
CC=golang-dev
https://golang.org/cl/5486061
 2011-12-14 17:30:40 -05:00
Ron Minnich
1bc1caa802 cc: change cas to newcase 
Change the name of cas() in cc to newcase() to avoid a NIX conflict.
cas() is used in cc to create a new Case struct. There is a name
conflict in that cas() is a commonly-used
name for compare and swap. Since cas() is only used internally
in the compiler in 3 places, change the name to avoid a wider
conflict with the NIX runtime. This issue might well come up on
other OSes in the future anyway, as the name is fairly common.

R=rsc
CC=golang-dev
https://golang.org/cl/5294071
 2011-10-26 15:27:59 -07:00
Hector Chu
aed2c06dcb 5a, 5c, 6a, 6c, 8a, 8c: fix Windows file paths 
Verified with objdump -W.

R=alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/4974061
 2011-09-07 15:49:56 -04:00
Russ Cox
5e188b40f2 build: avoid redundant bss declarations 
Some compilers care, sadly.

R=iant, ken
CC=golang-dev
https://golang.org/cl/4931042
 2011-08-23 22:39:14 -04:00
Lucio De Re
c8c6e1961d 5c, 6c, 6l: fix Plan 9 build warnings 
src/cmd/5c/reg.c:
. Added USED() attribute.

src/cmd/6c/cgen.c:
. Revised code around "REGARG" to resemble use in "8c" and
  consequently remove a warning.

src/cmd/6l/asm.c:
. Added USED() attributes.
. Removed an unnecessary assignment.

R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/4836045
 2011-08-16 14:22:08 -04:00
Rob Pike
9d55c282e3 5c: attempt to fix build by silencing warnings about unused variables. 
The story is more complicated; this is just a bandaid.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/4755047
 2011-07-18 11:08:55 +10:00
Lucio De Re
5ea4d73b17 5a, 5c, 5l: fix for Plan 9 build 
5a/a.h:
. Removed <u.h> and <lib.h>.
. Made definition of EOF conditional.

5a/a.y:
. Added <u.h> and <lib.h>.

5a/lex.c:
. Added <u.h> and <lib.h>.
. Dropped <ctype.h> (now in <u.h>).

5c/peep.c:
. Removed unnecessary "return 0" statement.

5c/reg.c:
. Added compilation condition around unused code.

5c/swt.c:
. Removed unused "thestring" argument from Bprint() calls.

5l/asm.c:
. Added USED() statements as required.
. Adjusted a few format specifications.
. Added compilation condition around unused code.

5l/l.h:
. Dropped directory prefix from <../5l/5.out.h>.
. Added varargck pragma for "I" and "i".

5l/obj.c:
. Cascaded consecutive "if" statements.
. Dropped unnecessary incrementation and assignments.

5l/pass.c:
. Dropped unnecessary assignment.

5l/prof.c:
. #if 0 converted to #ifdef NOTDEF.

5l/span.c:
. Dropped unnecessary incrementation and assignments.

R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/4752041
 2011-07-15 11:58:28 -04:00
Russ Cox
1eb656784c 5c, 6c: fix build 
R=ken2
CC=golang-dev
https://golang.org/cl/4668049
 2011-07-01 11:13:38 -04:00
Russ Cox
c475c3071a 5c: do not use R9 and R10 
This program used to use R9 and R10.
Now it fails to compile (out of registers).
I used to know a simpler test but can't remember it.

Learned something new: Rietveld refuses change
list descriptions bigger than 10 kB.

int sum(int x, int y, int z, int w) {
        return
        (((((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))))%
        (((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))))*
        ((((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))))%
        (((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))))))*
        (((((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))))%
        (((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))))*
        ((((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))))%
        (((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))))/
        ((((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))|
        (((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w))&
        ((x*y+z*w|x*y+z*w)^
        (x*y+z*w|x*y+z*w)))))))
        ;
}

R=ken2
CC=golang-dev
https://golang.org/cl/4650053
 2011-06-22 23:22:36 -04:00
Russ Cox
2d310a0087 5c, 5g: another attempt at silencing gcc 
R=ken2
CC=golang-dev
https://golang.org/cl/4535074
 2011-05-16 16:15:13 -04:00
Russ Cox
2d174db6a6 5c, 5g: fix build with too-smart gcc 
R=ken2
CC=golang-dev
https://golang.org/cl/4543049
 2011-05-13 12:15:46 -04:00
Russ Cox
b331f3cfd0 5c: make alignment rules match 5g, just like 6c matches 6g 
I should have done this a year ago in:

        changeset:   5137:686b18098944
        user:        Russ Cox <rsc@golang.org>
        date:        Thu Mar 25 14:05:54 2010 -0700
        files:       src/cmd/8c/swt.c
        description:
        make alignment rules match 8g, just like 6c matches 6g.

        R=ken2
        CC=golang-dev
        https://golang.org/cl/760042

R=ken2
CC=golang-dev
https://golang.org/cl/4437054
 2011-04-18 18:50:31 -04:00
Russ Cox
1d26908d3f build: use gcc -Werror 
Better to fix the warnings that we find.

R=iant
CC=golang-dev
https://golang.org/cl/4406042
 2011-04-13 16:18:09 -04:00
Russ Cox
d9fd11443c ld: detect stack overflow due to NOSPLIT 
Fix problems found.

On amd64, various library routines had bigger
stack frames than expected, because large function
calls had been added.

runtime.assertI2T: nosplit stack overflow
        120	assumed on entry to runtime.assertI2T
        8	after runtime.assertI2T uses 112
        0	on entry to runtime.newTypeAssertionError
        -8	on entry to runtime.morestack01

runtime.assertE2E: nosplit stack overflow
        120	assumed on entry to runtime.assertE2E
        16	after runtime.assertE2E uses 104
        8	on entry to runtime.panic
        0	on entry to runtime.morestack16
        -8	after runtime.morestack16 uses 8

runtime.assertE2T: nosplit stack overflow
        120	assumed on entry to runtime.assertE2T
        16	after runtime.assertE2T uses 104
        8	on entry to runtime.panic
        0	on entry to runtime.morestack16
        -8	after runtime.morestack16 uses 8

runtime.newselect: nosplit stack overflow
        120	assumed on entry to runtime.newselect
        56	after runtime.newselect uses 64
        48	on entry to runtime.printf
        8	after runtime.printf uses 40
        0	on entry to vprintf
        -8	on entry to runtime.morestack16

runtime.selectdefault: nosplit stack overflow
        120	assumed on entry to runtime.selectdefault
        56	after runtime.selectdefault uses 64
        48	on entry to runtime.printf
        8	after runtime.printf uses 40
        0	on entry to vprintf
        -8	on entry to runtime.morestack16

runtime.selectgo: nosplit stack overflow
        120	assumed on entry to runtime.selectgo
        0	after runtime.selectgo uses 120
        -8	on entry to runtime.gosched

On arm, 5c was tagging functions NOSPLIT that should
not have been, like the recursive function printpanics:

printpanics: nosplit stack overflow
        124	assumed on entry to printpanics
        112	after printpanics uses 12
        108	on entry to printpanics
        96	after printpanics uses 12
        92	on entry to printpanics
        80	after printpanics uses 12
        76	on entry to printpanics
        64	after printpanics uses 12
        60	on entry to printpanics
        48	after printpanics uses 12
        44	on entry to printpanics
        32	after printpanics uses 12
        28	on entry to printpanics
        16	after printpanics uses 12
        12	on entry to printpanics
        0	after printpanics uses 12
        -4	on entry to printpanics

R=r, r2
CC=golang-dev
https://golang.org/cl/4188061
 2011-02-22 17:40:40 -05:00
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
dc9a3b2791 gc: align structs according to max alignment of fields 
cc: same
runtime: test cc alignment (required moving #define of offsetof to runtime.h)
fix bug260

Fixes #482.
Fixes #609.

R=ken2, r
CC=golang-dev
https://golang.org/cl/3563042
 2010-12-13 16:22:19 -05:00
Russ Cox
41b5fb4761 5c: implement uint32 -> float 
There are other missing conversion cases
still but they do not show up in my tests.
This one is needed for vlrt.c's _v2d (int64, uint64 -> float).

Thankfully, VFP has a single instruction to do this.

R=ken2
CC=golang-dev
https://golang.org/cl/2726041
 2010-10-25 16:18:16 -07:00
Russ Cox
d9c989fa25 various: avoid %ld etc 
The Plan 9 tools assume that long is 32 bits.
We converted all instances of long to int32 when
importing the code but missed the print formats.
Because int32 is always int on the compilers we use,
it is never correct to use %lux, %ld, etc.  Convert to %ux, %d, etc.

(It matters because on 64-bit gcc, long is 64 bits,
so we were printing 32-bit quantities with 64-bit formats.)

R=ken2
CC=golang-dev
https://golang.org/cl/2491041
 2010-10-13 16:20:22 -04:00
Russ Cox
085be1740a 5l, 6l, 8l: first pass cleanup 
* Maintain Sym* list for text with individual
  prog lists instead of using one huge list and
  overloading p->pcond.
* Comment what each file is for.
* Move some output code from span.c to asm.c.
* Move profiling into prof.c, symbol table into symtab.c.
* Move mkfwd to ld/lib.c.
* Throw away dhog dynamic loading code.
* Throw away Alef become.
* Fix printing of WORD instructions in 5l -a.

Goal here is to be able to handle each piece of text or data
as a separate piece, both to make it easier to load the
occasional .o file and also to make it possible to split the
work across multiple threads.

R=ken2, r, ken3
CC=golang-dev
https://golang.org/cl/2335043
 2010-10-13 15:51:21 -04:00
Russ Cox
aafe474ec9 build: $GOBIN defaults to $GOROOT/bin 
R=r
CC=golang-dev
https://golang.org/cl/1982049
 2010-08-24 20:00:33 -04:00
Rob Pike
9e481e2905 fix spelling of align 
R=rsc
CC=golang-dev
https://golang.org/cl/778041
 2010-03-26 09:56:57 -07:00
Ian Lance Taylor
9e0ae94e72 Add support for #pragma dynexport. 
R=rsc
CC=golang-dev
https://golang.org/cl/661043
 2010-03-23 06:46:30 -07:00
Ian Lance Taylor
f54d73b880 Rename dynld to dynimport throughout. 
Cgo users will need to rerun cgo.

R=rsc
CC=golang-dev
https://golang.org/cl/692041
 2010-03-22 19:58:55 -07:00
Russ Cox
36c5c5bf40 cc: disallow ... argument unless NOSPLIT is set. 
check that NOSPLIT functions don't use too much stack.
correct some missing NOSPLITs in the runtime library.

Fixes bug reported in
https://groups.google.com/group/golang-nuts/t/efff68b73941eccf

R=ken2
CC=golang-dev
https://golang.org/cl/236041
 2010-03-04 15:34:25 -08:00
Kai Backman
494bcc80e4 stop the 5c optimizer from clobbering extern static registers. 
R=rsc, ken2
CC=golang-dev
https://golang.org/cl/204064
 2010-02-10 22:42:05 -08:00
Sergio Luis O. B. Correia
6fc820729e go: makes it build for the case $GOROOT has whitespaces 
the bash scripts and makefiles for building go didn't take into account
the fact $GOROOT / $GOBIN could both be directories containing whitespaces,
and was not possible to build it in such a situation.

this commit adjusts the various makefiles/scripts to make it aware of that
possibility, and now it builds successfully when using a path with whitespaces
as well.

Fixes #115.

R=rsc, dsymonds1
https://golang.org/cl/157067
 2009-11-23 17:32:51 -08:00
Russ Cox
18ccbc69f8 tweak documentation of commands 
so that first sentence is better for cmd page.

live at http://r45:3456/cmd/

R=gri, r
http://go/go-review/1024034
 2009-11-09 11:45:15 -08:00
Rob Pike
2bc63f2367 First steps at command documentation: C compilers and linkers. 
Each command gets a doc.go file for godoc to analyze. Its main
element is a package comment.

R=rsc
CC=go-dev
http://go/go-review/1018029
 2009-11-03 16:05:47 -08:00
Kai Backman
101f7cbd61 changed 5c 64 bit word ordering to little endian so it matches 
5g. fixes to 64 bit code gen. added (finally) function to do
shifts properly.

go/test: passes 83% (287/342)

R=rsc
APPROVED=rsc
DELTA=156  (50 added, 53 deleted, 53 changed)
OCL=35589
CL=35616
 2009-10-12 13:35:28 -07:00
Russ Cox
11d3805579 clean more 
R=r
DELTA=40  (9 added, 3 deleted, 28 changed)
OCL=35277
CL=35305
 2009-10-03 10:38:03 -07:00
Phil Pennock
d6f89c69c4 Support use of $GOBINDIR to override $HOME/bin 
R=r,gri,rsc
APPROVED=rsc
DELTA=53  (12 added, 6 deleted, 35 changed)
OCL=31822
CL=32282
 2009-07-28 11:23:24 -07:00
Russ Cox
27432d67ec move 6c/pgen.c, 6c/pswt.c into cc 
and make 5c, 8c use them.

centralizes reachability analysis
and switch generation.

now 8c doesn't have spurious warnings
in pkg/runtime.

R=ken
OCL=31266
CL=31266
 2009-07-07 10:07:15 -07:00
Kai Backman
1ac2cfc720 grab bag of changes aimed at getting stack splitting to work: 
- morestack support for 5l and arm runtime
- argsize support in 5c, 5l, ar and nm. assembly code from 5a
  will break in interesting ways unless NOSPLIT is specified
- explicit cond execution constants
- fix 5l output to use %d instead of %ld so that negative
  values show.
- added a lot of code to arm/asm.s. runtime entry code almost
  working currently aborts at gogo not implemented

R=rsc
APPROVED=rsc
DELTA=305  (125 added, 29 deleted, 151 changed)
OCL=30246
CL=30347
 2009-06-16 11:25:58 -07:00
Kai Backman
f2201185ab Added ld/go.c functionality into 5l, primarily dead code 
removal and typesigs and strings.

Also added new header support to 5c/5a/5l.

R=rsc
APPROVED=rsc
DELTA=98  (66 added, 10 deleted, 22 changed)
OCL=30103
CL=30123
 2009-06-09 20:51:53 -07:00
Kai Backman
99cc2fee81 This is really two changes in one but given interdependencies 
and expected review latency I needed to combine the CLs.

1. Made the 5* toolpath build using the go build
   system. Hooked the subdirectories to clean.bash but added a
   separate make5.bash for now. Minor massage to make the code
   more similar to the current structure of 6c/6a/6l.

2. Change all references from long to int32 in line with
   similar change for the other toolchains.

The end result is that 5c, 5a and 5l can now be compiled and
the executables start up properly. Haven't thrown any input at
them yet.

R=rsc
APPROVED=rsc
DELTA=1052  (392 added, 328 deleted, 332 changed)
OCL=26757
CL=26761
 2009-03-25 16:31:38 -07:00
Kai Backman
db3a21d7c6 5a 5c 5l from inferno distribution 
R=rsc
APPROVED=rsc
DELTA=19042  (19042 added, 0 deleted, 0 changed)
OCL=26268
CL=26270
 2009-03-13 15:03:07 -07:00