Example #1
0
void
main(int argc, char *argv[])
{
	char *p;
	Sym *s;

	Binit(&bso, 1, OWRITE);
	listinit();
	nerrors = 0;
	outfile = "5.out";
	HEADTYPE = -1;
	INITTEXT = -1;
	INITDAT = -1;
	INITRND = -1;
	INITENTRY = 0;
	linkmode = LinkAuto;
	nuxiinit();
	
	p = getgoarm();
	if(p != nil)
		goarm = atoi(p);
	else
		goarm = 6;
	if(goarm == 5)
		debug['F'] = 1;

	flagcount("1", "use alternate profiling code", &debug['1']);
	flagfn1("B", "info: define ELF NT_GNU_BUILD_ID note", addbuildinfo);
	flagstr("E", "sym: entry symbol", &INITENTRY);
	flagint32("D", "addr: data address", &INITDAT);
	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']);
	flagcount("M", "disable software div/mod", &debug['M']);
	flagcount("O", "print pc-line tables", &debug['O']);
	flagcount("P", "debug code generation", &debug['P']);
	flagint32("R", "rnd: address rounding", &INITRND);
	flagint32("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", "linker to run in external mode", &extld);
	flagstr("extldflags", "flags for external linker", &extldflags);
	flagcount("f", "ignore version mismatch", &debug['f']);
	flagcount("g", "disable go package data checks", &debug['g']);
	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);
	flagcount("p", "insert profiling code", &debug['p']);
	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']);
	flagcount("shared", "generate shared object (implies -linkmode external)", &flag_shared);
	flagstr("tmpdir", "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);

	if(argc != 1)
		usage();

	if(flag_shared)
		linkmode = LinkExternal;

	mywhatsys();

	if(HEADTYPE == -1)
		HEADTYPE = headtype(goos);

	// getgoextlinkenabled is based on GO_EXTLINK_ENABLED when
	// Go was built; see ../../make.bash.
	if(linkmode == LinkAuto && strcmp(getgoextlinkenabled(), "0") == 0)
		linkmode = LinkInternal;

	switch(HEADTYPE) {
	default:
		if(linkmode == LinkAuto)
			linkmode = LinkInternal;
		if(linkmode == LinkExternal && strcmp(getgoextlinkenabled(), "1") != 0)
			sysfatal("cannot use -linkmode=external with -H %s", headstr(HEADTYPE));
		break;
	case Hlinux:
		break;
	}

	libinit();

	switch(HEADTYPE) {
	default:
		diag("unknown -H option");
		errorexit();
	case Hnoheader:	/* no header */
		HEADR = 0L;
		if(INITTEXT == -1)
			INITTEXT = 0;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4;
		break;
	case Hrisc:	/* aif for risc os */
		HEADR = 128L;
		if(INITTEXT == -1)
			INITTEXT = 0x10005000 + HEADR;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4;
		break;
	case Hplan9x32:	/* plan 9 */
		HEADR = 32L;
		if(INITTEXT == -1)
			INITTEXT = 4128;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4096;
		break;
	case Hixp1200: /* boot for IXP1200 */
		HEADR = 0L;
		if(INITTEXT == -1)
			INITTEXT = 0x0;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4;
		break;
	case Hipaq: /* boot for ipaq */
		HEADR = 16L;
		if(INITTEXT == -1)
			INITTEXT = 0xC0008010;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 1024;
		break;
	case Hlinux:	/* arm elf */
	case Hfreebsd:
	case Hnetbsd:
		debug['d'] = 0;	// with dynamic linking
		tlsoffset = -8; // hardcoded number, first 4-byte word for g, and then 4-byte word for m
		                // this number is known to ../../pkg/runtime/rt0_*_arm.s
		elfinit();
		HEADR = ELFRESERVE;
		if(INITTEXT == -1)
			INITTEXT = 0x10000 + HEADR;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4096;
		break;
	}
	if(INITDAT != 0 && INITRND != 0)
		print("warning: -D0x%ux is ignored because of -R0x%ux\n",
			INITDAT, INITRND);
	if(debug['v'])
		Bprint(&bso, "HEADER = -H0x%d -T0x%ux -D0x%ux -R0x%ux\n",
			HEADTYPE, INITTEXT, INITDAT, INITRND);
	Bflush(&bso);
	zprg.as = AGOK;
	zprg.scond = 14;
	zprg.reg = NREG;
	zprg.from.name = D_NONE;
	zprg.from.type = D_NONE;
	zprg.from.reg = NREG;
	zprg.to = zprg.from;
	buildop();
	histgen = 0;
	pc = 0;
	dtype = 4;

	version = 0;
	cbp = buf.cbuf;
	cbc = sizeof(buf.cbuf);

	// embed goarm to runtime.goarm
	s = lookup("runtime.goarm", 0);
	s->dupok = 1;
	adduint8(s, goarm);

	addlibpath("command line", "command line", argv[0], "main");
	loadlib();

	// mark some functions that are only referenced after linker code editing
	if(debug['F'])
		mark(rlookup("_sfloat", 0));
	mark(lookup("runtime.read_tls_fallback", 0));
	deadcode();
	if(textp == nil) {
		diag("no code");
		errorexit();
	}

	patch();
	if(debug['p'])
		if(debug['1'])
			doprof1();
		else
			doprof2();
	doelf();
	follow();
	softfloat();
	// 5l -Z means zero the stack frame on entry.
	// This slows down function calls but can help avoid
	// false positives in garbage collection.
	if(debug['Z'])
		dozerostk();
	noops(); // generate stack split prolog, handle div/mod, etc.
	dostkcheck();
	span();
	addexport();
	// textaddress() functionality is handled in span()
	pclntab();
	symtab();
	dodata();
	address();
	doweak();
	reloc();
	asmb();
	undef();
	hostlink();

	if(debug['c'])
		print("ARM size = %d\n", armsize);
	if(debug['v']) {
		Bprint(&bso, "%5.2f cpu time\n", cputime());
		Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
		Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
	}
	Bflush(&bso);
	errorexit();
}
Example #2
0
void
main(int argc, char *argv[])
{
	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;
	nuxiinit();
	
	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);
	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", "linker to run in external mode", &extld);
	flagstr("extldflags", "flags for external linker", &extldflags);
	flagcount("f", "ignore version mismatch", &debug['f']);
	flagcount("g", "disable go package data checks", &debug['g']);
	flagstr("installsuffix", "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", "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));
	}

	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();
}
Example #3
0
File: obj.c Project: hfeeki/golang
void
main(int argc, char *argv[])
{
	Binit(&bso, 1, OWRITE);
	listinit();
	memset(debug, 0, sizeof(debug));
	nerrors = 0;
	outfile = nil;
	HEADTYPE = -1;
	INITTEXT = -1;
	INITDAT = -1;
	INITRND = -1;
	INITENTRY = 0;
	LIBINITENTRY = 0;
	linkmode = LinkInternal; // TODO: LinkAuto once everything works.
	nuxiinit();

	flagcount("1", "use alternate profiling code", &debug['1']);
	flagfn1("B", "info: define ELF NT_GNU_BUILD_ID note", addbuildinfo);
	flagstr("E", "sym: entry symbol", &INITENTRY);
	flagint32("D", "addr: data address", &INITDAT);
	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']);
	flagcount("O", "print pc-line tables", &debug['O']);
	flagcount("Q", "debug byte-register code gen", &debug['Q']);
	flagint32("R", "rnd: address rounding", &INITRND);
	flagcount("S", "check type signatures", &debug['S']);
	flagint32("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']);
	flagcount("f", "ignore version mismatch", &debug['f']);
	flagcount("g", "disable go package data checks", &debug['g']);
	flagfn1("linkmode", "mode: set link mode (internal, external, auto)", setlinkmode);
	flagstr("k", "sym: set field tracking symbol", &tracksym);
	flagstr("o", "outfile: set output file", &outfile);
	flagcount("p", "insert profiling code", &debug['p']);
	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']);
	flagcount("n", "dump symbol table", &debug['n']);
	flagstr("tmpdir", "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']);
	// TODO: link mode flag
	
	flagparse(&argc, &argv, usage);

	if(argc != 1)
		usage();

	mywhatsys();	// get goos

	if(HEADTYPE == -1)
		HEADTYPE = headtype(goos);

	switch(HEADTYPE) {
	default:
		if(linkmode == LinkAuto)
			linkmode = LinkInternal;
		if(linkmode == LinkExternal)
			sysfatal("cannot use -linkmode=external with -H %s", headstr(HEADTYPE));
		break;
	case Hdarwin:
	case Hfreebsd:
	case Hlinux:
	case Hnetbsd:
	case Hopenbsd:
		break;
	}

	if(outfile == nil) {
		if(HEADTYPE == Hwindows)
			outfile = "8.out.exe";
		else
			outfile = "8.out";
	}

	libinit();

	switch(HEADTYPE) {
	default:
		diag("unknown -H option");
		errorexit();

	case Hgarbunix:	/* this is garbage */
		HEADR = 20L+56L;
		if(INITTEXT == -1)
			INITTEXT = 0x40004CL;
		if(INITDAT == -1)
			INITDAT = 0x10000000L;
		if(INITRND == -1)
			INITRND = 0;
		break;
	case Hunixcoff:	/* is unix coff */
		HEADR = 0xd0L;
		if(INITTEXT == -1)
			INITTEXT = 0xd0;
		if(INITDAT == -1)
			INITDAT = 0x400000;
		if(INITRND == -1)
			INITRND = 0;
		break;
	case Hplan9x32:	/* plan 9 */
		tlsoffset = -8;
		HEADR = 32L;
		if(INITTEXT == -1)
			INITTEXT = 4096+32;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4096;
		break;
	case Hmsdoscom:	/* MS-DOS .COM */
		HEADR = 0;
		if(INITTEXT == -1)
			INITTEXT = 0x0100;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4;
		break;
	case Hmsdosexe:	/* fake MS-DOS .EXE */
		HEADR = 0x200;
		if(INITTEXT == -1)
			INITTEXT = 0x0100;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4;
		HEADR += (INITTEXT & 0xFFFF);
		if(debug['v'])
			Bprint(&bso, "HEADR = 0x%d\n", HEADR);
		break;
	case Hdarwin:	/* apple MACH */
		/*
		 * OS X system constant - offset from %gs to our TLS.
		 * Explained in ../../pkg/runtime/cgo/gcc_darwin_386.c.
		 */
		tlsoffset = 0x468;
		machoinit();
		HEADR = INITIAL_MACHO_HEADR;
		if(INITTEXT == -1)
			INITTEXT = 4096+HEADR;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4096;
		break;
	case Hlinux:	/* elf32 executable */
	case Hfreebsd:
	case Hnetbsd:
	case Hopenbsd:
		/*
		 * ELF uses TLS offsets negative from %gs.
		 * Translate 0(GS) and 4(GS) into -8(GS) and -4(GS).
		 * Also known to ../../pkg/runtime/sys_linux_386.s
		 * and ../../pkg/runtime/cgo/gcc_linux_386.c.
		 */
		tlsoffset = -8;
		elfinit();
		HEADR = ELFRESERVE;
		if(INITTEXT == -1)
			INITTEXT = 0x08048000+HEADR;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = 4096;
		break;
	case Hwindows: /* PE executable */
		peinit();
		HEADR = PEFILEHEADR;
		if(INITTEXT == -1)
			INITTEXT = PEBASE+PESECTHEADR;
		if(INITDAT == -1)
			INITDAT = 0;
		if(INITRND == -1)
			INITRND = PESECTALIGN;
		break;
	}
	if(INITDAT != 0 && INITRND != 0)
		print("warning: -D0x%ux is ignored because of -R0x%ux\n",
			INITDAT, INITRND);
	if(debug['v'])
		Bprint(&bso, "HEADER = -H0x%d -T0x%ux -D0x%ux -R0x%ux\n",
			HEADTYPE, INITTEXT, INITDAT, INITRND);
	Bflush(&bso);

	instinit();
	zprg.link = P;
	zprg.pcond = P;
	zprg.back = 2;
	zprg.as = AGOK;
	zprg.from.type = D_NONE;
	zprg.from.index = D_NONE;
	zprg.from.scale = 1;
	zprg.to = zprg.from;

	pcstr = "%.6ux ";
	histgen = 0;
	pc = 0;
	dtype = 4;
	version = 0;
	cbp = buf.cbuf;
	cbc = sizeof(buf.cbuf);

	addlibpath("command line", "command line", argv[0], "main");
	loadlib();
	deadcode();
	patch();
	follow();
	doelf();
	if(HEADTYPE == Hdarwin)
		domacho();
	if(HEADTYPE == Hwindows)
		dope();
	dostkoff();
	dostkcheck();
	if(debug['p'])
		if(debug['1'])
			doprof1();
		else
			doprof2();
	span();
	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", nsymbol);
		Bprint(&bso, "%d sizeof adr\n", sizeof(Adr));
		Bprint(&bso, "%d sizeof prog\n", sizeof(Prog));
	}
	Bflush(&bso);

	errorexit();
}