Uses ar to create an archive when -buildmode=c-archive.
A small example (that I hope to turn into a test in a later CL):
goarchive.go:
package main
import "fmt"
import "C"
func init() {
fmt.Println("ran go init")
}
//export FuncInGo
func FuncInGo() {
fmt.Println("called a go function")
}
func main() {
fmt.Println("in main")
}
This can be compiled with:
go build -ldflags=-buildmode=c-archive -o=libgo.a goarchive.go
main.c:
#include <stdio.h>
extern void FuncInGo();
int main(void) {
printf("c hello\n");
FuncInGo();
printf("c goodbye\n");
return 0;
}
Can be compiled with:
cc main.c libgo.a
Apple provide a warning about the lack of PIE, but still produce a
binary which runs and outputs (on darwin/amd64):
c hello
ran go init
called a go function
c goodbye
Change-Id: I7611925f210a83afa6bd1e66a5601dd636a428c8
Reviewed-on: https://go-review.googlesource.com/8711
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Change-Id: Id4997d611ced29397133f14def6abc88aa9e811e
Reviewed-on: https://go-review.googlesource.com/8252
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The linker currently (on some platforms) takes a -shared flag, which means
approximately what -buildmode=c-shared means in the in the proposed "Go
Execution Modes" document. As part of implementing other modes, the term
"shared" becomes horribly overloaded, so this replaces -shared with a
-buildmode argument instead (which currently only handles -buildmode=c-shared
and the default -buildmode=exe -- no new behaviour here).
As the linker support for -shared was in 1.4 this retains it as an alias.
Change-Id: Id2ebb8e05ee07f46208a554bc2622d0e67b47082
Reviewed-on: https://go-review.googlesource.com/8304
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This CL introduces R_ADDRARM64, which is similar to R_ADDRPOWER.
Fixes#10112.
Change-Id: I309e3df7608b9eef9339196fdc50dedf5f9439f1
Reviewed-on: https://go-review.googlesource.com/8438
Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Based on Michael Hudson-Doyle's patch:
b735215ee4
Change-Id: I309e3df7608b9eef9339196fdc50dedf5f9439f0
Reviewed-on: https://go-review.googlesource.com/8437
Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
The c2go translation left a lot of case expressions on separate lines.
Merge expressions onto single lines subject to these constraints:
* Max 4 clauses, all literals or names
* Don't move expressions with comments
The change was created by running http://play.golang.org/p/yHajs72h-g:
$ mergecase cmd/internal/{ld,gc,obj}/*.go cmd/internal/obj/*/*.go
Passes toolstash -cmp.
Change-Id: Iba41b390d302e5486e5dc6ba7599a92270676556
Reviewed-on: https://go-review.googlesource.com/7593
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
These were introduced during C -> Go translation when the loop increment
contained multiple statements.
Change-Id: Ic8abd8dcb3308851a1f7024de00711f0f984e684
Reviewed-on: https://go-review.googlesource.com/7627
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Rob Pike <r@golang.org>
Only internal linking without cgo is supported for now.
Change-Id: I91eb1572c1ccc805db62fc4c29080df98797d51a
Reviewed-on: https://go-review.googlesource.com/7048
Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Just little bits and pieces I noticed were unused in passing, and
some more found with https://github.com/opennota/check.
Change-Id: I199fecdbf8dc2ff9076cf4ea81395275c7f171c3
Reviewed-on: https://go-review.googlesource.com/7033
Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
It appears that c2go dropped comments inside struct { ... } and enum { ... }.
Restore them.
Identified missing comments by checking for comments present
in the C code but not the Go code, made a list, and then reapplied
with some mechanical help.
Missing comment finder: http://play.golang.org/p/g6qNUAo1Y0
Change-Id: I323ab45c7ef9d51e28eab3b699eb14bee1eef66b
Reviewed-on: https://go-review.googlesource.com/6899
Reviewed-by: Rob Pike <r@golang.org>
Run rsc.io/grind rev 796d0f2 on C->Go conversions.
This replaces various awkward := initializations with plain var declarations.
Checked bit-for-bit compatibility with toolstash + buildall.
Change-Id: I601101d8177894adb9b0e3fb55dfe0ed4f544716
Reviewed-on: https://go-review.googlesource.com/6517
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run rsc.io/grind rev a26569f on C->Go conversions.
The new change in grind is the inlining of goto targets.
If code says 'goto x' and the block starting at label x is unreachable
except through that goto and the code can be moved to where
the goto is without changing the meaning of its variable names,
grind does that move. Simlarly, a goto to a plain return statement
turns into that return statement (even if there are other paths to
the return statement).
Combined, these remove many long-distance gotos, which in turn
makes it possible to reduce the scope of more variable declarations.
(Because gotos can't jump across declarations, the gotos were
keeping the declarations from moving.)
Checked bit-for-bit compatibility with toolstash + buildall.
Reduces compiler runtime in html/template by about 12%.
Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3
Reviewed-on: https://go-review.googlesource.com/6472
Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Replaced by Ctxt.ByteOrder, which uses the standard binary.ByteOrder type.
Change-Id: I06cec0674c153a9ad75ff937f7eb934891effd0b
Reviewed-on: https://go-review.googlesource.com/6450
Reviewed-by: Dave Cheney <dave@cheney.net>
Reviewed-by: Rob Pike <r@golang.org>
