all: merge dev.cc (a91c2e0) into master · golang/go@b986f3e

misc/cgo/stdio/run.out

misc/cgo/testso/main

misc/dashboard/builder/builder

src/cmd/?a/y.output

src/liblink/anames?.c

src/cmd/cc/y.output

src/cmd/*/y.output

src/cmd/cgo/zdefaultcc.go

src/cmd/dist/dist.dSYM

src/cmd/gc/mkbuiltin1

src/cmd/gc/opnames.h

src/cmd/gc/y.output

src/cmd/go/zdefaultcc.go

src/cmd/internal/obj/zbootstrap.go

src/go/doc/headscan

src/runtime/mkversion

src/runtime/zaexperiment.h

Tools:

cmd/go: std wildcard now excludes commands in main repo (https://golang.org/cl/5550)

cmd/vet: better validation of struct tags (https://golang.org/cl/2685)

cmd/ld: no longer record build timestamp in Windows PE file header (https://golang.org/cl/3740)

math/big: faster assembly kernels for amd64 and 386 (https://golang.org/cl/2503, https://golang.org/cl/2560)

math/big: faster "pure Go" kernels for platforms w/o assembly kernels (https://golang.org/cl/2480)

Assembler:

ARM assembly syntax has had some features removed.

- mentioning SP or PC as a hardware register

These are always pseudo-registers except that in some contexts

they're not, and it's confusing because the context should not affect

which register you mean. Change the references to the hardware

registers to be explicit: R13 for SP, R15 for PC.

- constant creation using assignment

The files say a=b when they could instead say #define a b.

There is no reason to have both mechanisms.

- R(0) to refer to R0.

Some macros use this to a great extent. Again, it's easy just to

use a #define to rename a register.

Also expression evaluation now uses uint64s instead of signed integers and the

precedence of operators is now Go-like rather than C-like.

extern char* getgoarm(void);

extern char* getgo386(void);

extern char* getgoextlinkenabled(void);

extern char* getgohostos(void);

extern char* getgohostarch(void);

extern char* mktempdir(void);

extern void removeall(char*);

uchar ft; // oclass cache

uchar tt; // oclass cache

uchar isize; // amd64, 386

uchar printed;

char width; /* fake for DATA */

char mode; /* 16, 32, or 64 in 6l, 8l; internal use in 5g, 6g, 8g */

uchar localentry; // ppc64: instrs between global & local entry

uchar seenglobl;

uchar onlist; // on the textp or datap lists

uchar printed;

int16 symid; // for writing .5/.6/.8 files

int32 dynid;

int32 sig;

char* name;

int32 line;

int32 offset;

uchar printed;

};

struct Plist

char* getgoarm(void);

char* getgo386(void);

char* getgoextlinkenabled(void);

char* getgohostos(void);

char* getgohostarch(void);

int runcmd(char**);

void flagcount(char*, char*, int*);

void flagint32(char*, char*, int32*);

#include "textflag.h"

TEXT cas<>(SB),NOSPLIT,$0

MOVW $0xffff0fc0, PC

MOVW $0xffff0fc0, R15 // R15 is PC

TEXT ·RewindAndSetgid(SB),NOSPLIT,$-4-0

// Save link register

go src=..

src

cmd

asm

internal

asm

testdata

+

internal

objfile

objfile.go

rsc.io

arm

armasm

testdata

+

x86

x86asm

testdata

+

gofmt

gofmt.go

gofmt_test.go