Go prebuilts for linux-x86, version 1.4.1

See README.ANDROID for instructions on rebuilding the prebuilts.

Change-Id: I86db7f4fb3269585078da4d38947ca9126ac813b
diff --git a/src/cmd/ld/pobj.c b/src/cmd/ld/pobj.c
new file mode 100644
index 0000000..63460df
--- /dev/null
+++ b/src/cmd/ld/pobj.c
@@ -0,0 +1,207 @@
+// Inferno utils/6l/obj.c
+// http://code.google.com/p/inferno-os/source/browse/utils/6l/obj.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors.  All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Reading object files.
+
+#define	EXTERN
+#include	"l.h"
+#include	"../ld/lib.h"
+#include	"../ld/elf.h"
+#include	"../ld/macho.h"
+#include	"../ld/dwarf.h"
+#include	"../ld/pe.h"
+#include	<ar.h>
+
+char	*noname		= "<none>";
+char*	paramspace	= "FP";
+
+void
+main(int argc, char *argv[])
+{
+	int i;
+
+	linkarchinit();
+	ctxt = linknew(thelinkarch);
+	ctxt->thechar = thechar;
+	ctxt->thestring = thestring;
+	ctxt->diag = diag;
+	ctxt->bso = &bso;
+
+	Binit(&bso, 1, OWRITE);
+	listinit();
+	memset(debug, 0, sizeof(debug));
+	nerrors = 0;
+	outfile = nil;
+	HEADTYPE = -1;
+	INITTEXT = -1;
+	INITDAT = -1;
+	INITRND = -1;
+	INITENTRY = 0;
+	linkmode = LinkAuto;
+	
+	// For testing behavior of go command when tools crash.
+	// Undocumented, not in standard flag parser to avoid
+	// exposing in usage message.
+	for(i=1; i<argc; i++)
+		if(strcmp(argv[i], "-crash_for_testing") == 0)
+			*(volatile int*)0 = 0;
+	
+	if(thechar == '5' && ctxt->goarm == 5)
+		debug['F'] = 1;
+
+	flagcount("1", "use alternate profiling code", &debug['1']);
+	if(thechar == '6')
+		flagcount("8", "assume 64-bit addresses", &debug['8']);
+	flagfn1("B", "info: define ELF NT_GNU_BUILD_ID note", addbuildinfo);
+	flagcount("C", "check Go calls to C code", &debug['C']);
+	flagint64("D", "addr: data address", &INITDAT);
+	flagstr("E", "sym: entry symbol", &INITENTRY);
+	if(thechar == '5')
+		flagcount("G", "debug pseudo-ops", &debug['G']);
+	flagfn1("I", "interp: set ELF interp", setinterp);
+	flagfn1("L", "dir: add dir to library path", Lflag);
+	flagfn1("H", "head: header type", setheadtype);
+	flagcount("K", "add stack underflow checks", &debug['K']);
+	if(thechar == '5')
+		flagcount("M", "disable software div/mod", &debug['M']);
+	flagcount("O", "print pc-line tables", &debug['O']);
+	flagcount("Q", "debug byte-register code gen", &debug['Q']);
+	if(thechar == '5')
+		flagcount("P", "debug code generation", &debug['P']);
+	flagint32("R", "rnd: address rounding", &INITRND);
+	flagcount("S", "check type signatures", &debug['S']);
+	flagint64("T", "addr: text address", &INITTEXT);
+	flagfn0("V", "print version and exit", doversion);
+	flagcount("W", "disassemble input", &debug['W']);
+	flagfn2("X", "name value: define string data", addstrdata);
+	flagcount("Z", "clear stack frame on entry", &debug['Z']);
+	flagcount("a", "disassemble output", &debug['a']);
+	flagcount("c", "dump call graph", &debug['c']);
+	flagcount("d", "disable dynamic executable", &debug['d']);
+	flagstr("extld", "ld: linker to run in external mode", &extld);
+	flagstr("extldflags", "ldflags: flags for external linker", &extldflags);
+	flagcount("f", "ignore version mismatch", &debug['f']);
+	flagcount("g", "disable go package data checks", &debug['g']);
+	flagstr("installsuffix", "suffix: pkg directory suffix", &flag_installsuffix);
+	flagstr("k", "sym: set field tracking symbol", &tracksym);
+	flagfn1("linkmode", "mode: set link mode (internal, external, auto)", setlinkmode);
+	flagcount("n", "dump symbol table", &debug['n']);
+	flagstr("o", "outfile: set output file", &outfile);
+	flagstr("r", "dir1:dir2:...: set ELF dynamic linker search path", &rpath);
+	flagcount("race", "enable race detector", &flag_race);
+	flagcount("s", "disable symbol table", &debug['s']);
+	if(thechar == '5' || thechar == '6')
+		flagcount("shared", "generate shared object (implies -linkmode external)", &flag_shared);
+	flagstr("tmpdir", "dir: leave temporary files in this directory", &tmpdir);
+	flagcount("u", "reject unsafe packages", &debug['u']);
+	flagcount("v", "print link trace", &debug['v']);
+	flagcount("w", "disable DWARF generation", &debug['w']);
+	
+	flagparse(&argc, &argv, usage);
+	ctxt->bso = &bso;
+	ctxt->debugdivmod = debug['M'];
+	ctxt->debugfloat = debug['F'];
+	ctxt->debughist = debug['O'];
+	ctxt->debugpcln = debug['O'];
+	ctxt->debugread = debug['W'];
+	ctxt->debugstack = debug['K'];
+	ctxt->debugvlog = debug['v'];
+
+	if(argc != 1)
+		usage();
+
+	if(outfile == nil) {
+		if(HEADTYPE == Hwindows)
+			outfile = smprint("%c.out.exe", thechar);
+		else
+			outfile = smprint("%c.out", thechar);
+	}
+	libinit(); // creates outfile
+
+	if(HEADTYPE == -1)
+		HEADTYPE = headtype(goos);
+	ctxt->headtype = HEADTYPE;
+	if(headstring == nil)
+		headstring = headstr(HEADTYPE);
+
+	archinit();
+	ctxt->debugfloat = debug['F'];
+
+	if(debug['v'])
+		Bprint(&bso, "HEADER = -H%d -T0x%llux -D0x%llux -R0x%ux\n",
+			HEADTYPE, INITTEXT, INITDAT, INITRND);
+	Bflush(&bso);
+
+	cbp = buf.cbuf;
+	cbc = sizeof(buf.cbuf);
+
+	addlibpath(ctxt, "command line", "command line", argv[0], "main");
+	loadlib();
+	
+	if(thechar == '5') {
+		// mark some functions that are only referenced after linker code editing
+		if(debug['F'])
+			mark(linkrlookup(ctxt, "_sfloat", 0));
+		mark(linklookup(ctxt, "runtime.read_tls_fallback", 0));
+	}
+
+	checkgo();
+	deadcode();
+	callgraph();
+	paramspace = "SP";	/* (FP) now (SP) on output */
+
+	doelf();
+	if(HEADTYPE == Hdarwin)
+		domacho();
+	dostkcheck();
+	if(HEADTYPE == Hwindows)
+		dope();
+	addexport();
+	textaddress();
+	pclntab();
+	symtab();
+	dodata();
+	address();
+	doweak();
+	reloc();
+	asmb();
+	undef();
+	hostlink();
+	if(debug['v']) {
+		Bprint(&bso, "%5.2f cpu time\n", cputime());
+		Bprint(&bso, "%d symbols\n", ctxt->nsymbol);
+		Bprint(&bso, "%d sizeof adr\n", sizeof(Addr));
+		Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
+		Bprint(&bso, "%lld liveness data\n", liveness);
+	}
+	Bflush(&bso);
+
+	errorexit();
+}