src/liblink/list8.c - go - Git at Google

 // Inferno utils/8c/list.c
 // http://code.google.com/p/inferno-os/source/browse/utils/8c/list.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.

 #include <u.h>
 #include <libc.h>
 #include <bio.h>
 #include <link.h>
 #include "../cmd/8l/8.out.h"

 static int	Aconv(Fmt *fp);
 static int	Dconv(Fmt *fp);
 static int	Pconv(Fmt *fp);
 static int	Rconv(Fmt *fp);
 static int	DSconv(Fmt *fp);

 enum
 {
 	STRINGSZ = 1000
 };

 #pragma	varargck	type	"$"	char*

 void
 listinit8(void)
 {
 	fmtinstall('A', Aconv);
 	fmtinstall('D', Dconv);
 	fmtinstall('P', Pconv);
 	fmtinstall('R', Rconv);

 	// for internal use
 	fmtinstall('$', DSconv);
 }

 static	Prog*	bigP;

 static int
 Pconv(Fmt *fp)
 {
 	char str[STRINGSZ];
 	Prog *p;

 	p = va_arg(fp->args, Prog*);
 	bigP = p;
 	switch(p->as) {
 	case ADATA:
 		sprint(str, "%.5lld (%L)	%A	%D/%d,%D",
 			p->pc, p->lineno, p->as, &p->from, p->from.scale, &p->to);
 		break;

 	case ATEXT:
 		if(p->from.scale) {
 			sprint(str, "%.5lld (%L)	%A	%D,%d,%lD",
 				p->pc, p->lineno, p->as, &p->from, p->from.scale, &p->to);
 			break;
 		}
 		sprint(str, "%.5lld (%L)	%A	%D,%lD",
 			p->pc, p->lineno, p->as, &p->from, &p->to);
 		break;

 	default:
 		sprint(str, "%.5lld (%L)	%A	%D,%D",
 			p->pc, p->lineno, p->as, &p->from, &p->to);
 		break;
 	}
 	bigP = nil;
 	return fmtstrcpy(fp, str);
 }

 static int
 Aconv(Fmt *fp)
 {
 	int i;

 	i = va_arg(fp->args, int);
 	return fmtstrcpy(fp, anames8[i]);
 }

 static int
 Dconv(Fmt *fp)
 {
 	char str[STRINGSZ], s[STRINGSZ];
 	Addr *a;
 	int i;

 	a = va_arg(fp->args, Addr*);
 	i = a->type;

 	if(fp->flags & FmtLong) {
 		if(i == D_CONST2)
 			sprint(str, "$%lld-%d", a->offset, a->offset2);
 		else {
 			// ATEXT dst is not constant
 			sprint(str, "!!%D", a);
 		}
 		goto brk;
 	}

 	if(i >= D_INDIR) {
 		if(a->offset)
 			sprint(str, "%lld(%R)", a->offset, i-D_INDIR);
 		else
 			sprint(str, "(%R)", i-D_INDIR);
 		goto brk;
 	}
 	switch(i) {
 	default:
 		if(a->offset)
 			sprint(str, "$%lld,%R", a->offset, i);
 		else
 			sprint(str, "%R", i);
 		break;

 	case D_NONE:
 		str[0] = 0;
 		break;

 	case D_BRANCH:
 		if(a->sym != nil)
 			sprint(str, "%s(SB)", a->sym->name);
 		else if(bigP != nil && bigP->pcond != nil)
 			sprint(str, "%lld", bigP->pcond->pc);
 		else if(a->u.branch != nil)
 			sprint(str, "%lld", a->u.branch->pc);
 		else
 			sprint(str, "%lld(PC)", a->offset);
 		break;

 	case D_EXTERN:
 		sprint(str, "%s+%lld(SB)", a->sym->name, a->offset);
 		break;

 	case D_STATIC:
 		sprint(str, "%s<>+%lld(SB)", a->sym->name, a->offset);
 		break;

 	case D_AUTO:
 		if(a->sym)
 			sprint(str, "%s+%lld(SP)", a->sym->name, a->offset);
 		else
 			sprint(str, "%lld(SP)", a->offset);
 		break;

 	case D_PARAM:
 		if(a->sym)
 			sprint(str, "%s+%lld(FP)", a->sym->name, a->offset);
 		else
 			sprint(str, "%lld(FP)", a->offset);
 		break;

 	case D_CONST:
 		sprint(str, "$%lld", a->offset);
 		break;

 	case D_CONST2:
 		if(!(fp->flags & FmtLong)) {
 			// D_CONST2 outside of ATEXT should not happen
 			sprint(str, "!!$%lld-%d", a->offset, a->offset2);
 		}
 		break;

 	case D_FCONST:
 		sprint(str, "$(%.17g)", a->u.dval);
 		break;

 	case D_SCONST:
 		sprint(str, "$\"%$\"", a->u.sval);
 		break;

 	case D_ADDR:
 		a->type = a->index;
 		a->index = D_NONE;
 		sprint(str, "$%D", a);
 		a->index = a->type;
 		a->type = D_ADDR;
 		goto conv;
 	}
 brk:
 	if(a->index != D_NONE) {
 		sprint(s, "(%R*%d)", (int)a->index, (int)a->scale);
 		strcat(str, s);
 	}
 conv:
 	return fmtstrcpy(fp, str);
 }

 char*	regstr[] =
 {
 	"AL",	/* [D_AL] */
 	"CL",
 	"DL",
 	"BL",
 	"AH",
 	"CH",
 	"DH",
 	"BH",

 	"AX",	/* [D_AX] */
 	"CX",
 	"DX",
 	"BX",
 	"SP",
 	"BP",
 	"SI",
 	"DI",

 	"F0",	/* [D_F0] */
 	"F1",
 	"F2",
 	"F3",
 	"F4",
 	"F5",
 	"F6",
 	"F7",

 	"CS",	/* [D_CS] */
 	"SS",
 	"DS",
 	"ES",
 	"FS",
 	"GS",

 	"GDTR",	/* [D_GDTR] */
 	"IDTR",	/* [D_IDTR] */
 	"LDTR",	/* [D_LDTR] */
 	"MSW",	/* [D_MSW] */
 	"TASK",	/* [D_TASK] */

 	"CR0",	/* [D_CR] */
 	"CR1",
 	"CR2",
 	"CR3",
 	"CR4",
 	"CR5",
 	"CR6",
 	"CR7",

 	"DR0",	/* [D_DR] */
 	"DR1",
 	"DR2",
 	"DR3",
 	"DR4",
 	"DR5",
 	"DR6",
 	"DR7",

 	"TR0",	/* [D_TR] */
 	"TR1",
 	"TR2",
 	"TR3",
 	"TR4",
 	"TR5",
 	"TR6",
 	"TR7",

 	"X0",	/* [D_X0] */
 	"X1",
 	"X2",
 	"X3",
 	"X4",
 	"X5",
 	"X6",
 	"X7",

 	"TLS",	/* [D_TLS] */
 	"NONE",	/* [D_NONE] */
 };

 static int
 Rconv(Fmt *fp)
 {
 	char str[STRINGSZ];
 	int r;

 	r = va_arg(fp->args, int);
 	if(r >= D_AL && r <= D_NONE)
 		sprint(str, "%s", regstr[r-D_AL]);
 	else
 		sprint(str, "gok(%d)", r);

 	return fmtstrcpy(fp, str);
 }

 static int
 DSconv(Fmt *fp)
 {
 	int i, c;
 	char str[STRINGSZ], *p, *a;

 	a = va_arg(fp->args, char*);
 	p = str;
 	for(i=0; i<sizeof(double); i++) {
 		c = a[i] & 0xff;
 		if(c >= 'a' && c <= 'z' ||
 		   c >= 'A' && c <= 'Z' ||
 		   c >= '0' && c <= '9') {
 			*p++ = c;
 			continue;
 		}
 		*p++ = '\\';
 		switch(c) {
 		default:
 			if(c < 040 || c >= 0177)
 				break;	/* not portable */
 			p[-1] = c;
 			continue;
 		case 0:
 			*p++ = 'z';
 			continue;
 		case '\\':
 		case '"':
 			*p++ = c;
 			continue;
 		case '\n':
 			*p++ = 'n';
 			continue;
 		case '\t':
 			*p++ = 't';
 			continue;
 		}
 		*p++ = (c>>6) + '0';
 		*p++ = ((c>>3) & 7) + '0';
 		*p++ = (c & 7) + '0';
 	}
 	*p = 0;
 	return fmtstrcpy(fp, str);
 }
	// Inferno utils/8c/list.c
	// http://code.google.com/p/inferno-os/source/browse/utils/8c/list.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.

	#include <u.h>
	#include <libc.h>
	#include <bio.h>
	#include <link.h>
	#include "../cmd/8l/8.out.h"

	static int Aconv(Fmt *fp);
	static int Dconv(Fmt *fp);
	static int Pconv(Fmt *fp);
	static int Rconv(Fmt *fp);
	static int DSconv(Fmt *fp);

	enum
	{
	STRINGSZ = 1000
	};

	#pragma varargck type "$" char*

	void
	listinit8(void)
	{
	fmtinstall('A', Aconv);
	fmtinstall('D', Dconv);
	fmtinstall('P', Pconv);
	fmtinstall('R', Rconv);

	// for internal use
	fmtinstall('$', DSconv);
	}

	static Prog* bigP;

	static int
	Pconv(Fmt *fp)
	{
	char str[STRINGSZ];
	Prog *p;

	p = va_arg(fp->args, Prog*);
	bigP = p;
	switch(p->as) {
	case ADATA:
	sprint(str, "%.5lld (%L) %A %D/%d,%D",
	p->pc, p->lineno, p->as, &p->from, p->from.scale, &p->to);
	break;

	case ATEXT:
	if(p->from.scale) {
	sprint(str, "%.5lld (%L) %A %D,%d,%lD",
	p->pc, p->lineno, p->as, &p->from, p->from.scale, &p->to);
	break;
	}
	sprint(str, "%.5lld (%L) %A %D,%lD",
	p->pc, p->lineno, p->as, &p->from, &p->to);
	break;

	default:
	sprint(str, "%.5lld (%L) %A %D,%D",
	p->pc, p->lineno, p->as, &p->from, &p->to);
	break;
	}
	bigP = nil;
	return fmtstrcpy(fp, str);
	}

	static int
	Aconv(Fmt *fp)
	{
	int i;

	i = va_arg(fp->args, int);
	return fmtstrcpy(fp, anames8[i]);
	}

	static int
	Dconv(Fmt *fp)
	{
	char str[STRINGSZ], s[STRINGSZ];
	Addr *a;
	int i;

	a = va_arg(fp->args, Addr*);
	i = a->type;

	if(fp->flags & FmtLong) {
	if(i == D_CONST2)
	sprint(str, "$%lld-%d", a->offset, a->offset2);
	else {
	// ATEXT dst is not constant
	sprint(str, "!!%D", a);
	}
	goto brk;
	}

	if(i >= D_INDIR) {
	if(a->offset)
	sprint(str, "%lld(%R)", a->offset, i-D_INDIR);
	else
	sprint(str, "(%R)", i-D_INDIR);
	goto brk;
	}
	switch(i) {
	default:
	if(a->offset)
	sprint(str, "$%lld,%R", a->offset, i);
	else
	sprint(str, "%R", i);
	break;

	case D_NONE:
	str[0] = 0;
	break;

	case D_BRANCH:
	if(a->sym != nil)
	sprint(str, "%s(SB)", a->sym->name);
	else if(bigP != nil && bigP->pcond != nil)
	sprint(str, "%lld", bigP->pcond->pc);
	else if(a->u.branch != nil)
	sprint(str, "%lld", a->u.branch->pc);
	else
	sprint(str, "%lld(PC)", a->offset);
	break;

	case D_EXTERN:
	sprint(str, "%s+%lld(SB)", a->sym->name, a->offset);
	break;

	case D_STATIC:
	sprint(str, "%s<>+%lld(SB)", a->sym->name, a->offset);
	break;

	case D_AUTO:
	if(a->sym)
	sprint(str, "%s+%lld(SP)", a->sym->name, a->offset);
	else
	sprint(str, "%lld(SP)", a->offset);
	break;

	case D_PARAM:
	if(a->sym)
	sprint(str, "%s+%lld(FP)", a->sym->name, a->offset);
	else
	sprint(str, "%lld(FP)", a->offset);
	break;

	case D_CONST:
	sprint(str, "$%lld", a->offset);
	break;

	case D_CONST2:
	if(!(fp->flags & FmtLong)) {
	// D_CONST2 outside of ATEXT should not happen
	sprint(str, "!!$%lld-%d", a->offset, a->offset2);
	}
	break;

	case D_FCONST:
	sprint(str, "$(%.17g)", a->u.dval);
	break;

	case D_SCONST:
	sprint(str, "$\"%$\"", a->u.sval);
	break;

	case D_ADDR:
	a->type = a->index;
	a->index = D_NONE;
	sprint(str, "$%D", a);
	a->index = a->type;
	a->type = D_ADDR;
	goto conv;
	}
	brk:
	if(a->index != D_NONE) {
	sprint(s, "(%R*%d)", (int)a->index, (int)a->scale);
	strcat(str, s);
	}
	conv:
	return fmtstrcpy(fp, str);
	}

	char* regstr[] =
	{
	"AL", /* [D_AL] */
	"CL",
	"DL",
	"BL",
	"AH",
	"CH",
	"DH",
	"BH",

	"AX", /* [D_AX] */
	"CX",
	"DX",
	"BX",
	"SP",
	"BP",
	"SI",
	"DI",

	"F0", /* [D_F0] */
	"F1",
	"F2",
	"F3",
	"F4",
	"F5",
	"F6",
	"F7",

	"CS", /* [D_CS] */
	"SS",
	"DS",
	"ES",
	"FS",
	"GS",

	"GDTR", /* [D_GDTR] */
	"IDTR", /* [D_IDTR] */
	"LDTR", /* [D_LDTR] */
	"MSW", /* [D_MSW] */
	"TASK", /* [D_TASK] */

	"CR0", /* [D_CR] */
	"CR1",
	"CR2",
	"CR3",
	"CR4",
	"CR5",
	"CR6",
	"CR7",

	"DR0", /* [D_DR] */
	"DR1",
	"DR2",
	"DR3",
	"DR4",
	"DR5",
	"DR6",
	"DR7",

	"TR0", /* [D_TR] */
	"TR1",
	"TR2",
	"TR3",
	"TR4",
	"TR5",
	"TR6",
	"TR7",

	"X0", /* [D_X0] */
	"X1",
	"X2",
	"X3",
	"X4",
	"X5",
	"X6",
	"X7",

	"TLS", /* [D_TLS] */
	"NONE", /* [D_NONE] */
	};

	static int
	Rconv(Fmt *fp)
	{
	char str[STRINGSZ];
	int r;

	r = va_arg(fp->args, int);
	if(r >= D_AL && r <= D_NONE)
	sprint(str, "%s", regstr[r-D_AL]);
	else
	sprint(str, "gok(%d)", r);

	return fmtstrcpy(fp, str);
	}

	static int
	DSconv(Fmt *fp)
	{
	int i, c;
	char str[STRINGSZ], p, a;

	a = va_arg(fp->args, char*);
	p = str;
	for(i=0; i<sizeof(double); i++) {
	c = a[i] & 0xff;
	if(c >= 'a' && c <= 'z' \|\|
	c >= 'A' && c <= 'Z' \|\|
	c >= '0' && c <= '9') {
	*p++ = c;
	continue;
	}
	*p++ = '\\';
	switch(c) {
	default:
	if(c < 040 \|\| c >= 0177)
	break; /* not portable */
	p[-1] = c;
	continue;
	case 0:
	*p++ = 'z';
	continue;
	case '\\':
	case '"':
	*p++ = c;
	continue;
	case '\n':
	*p++ = 'n';
	continue;
	case '\t':
	*p++ = 't';
	continue;
	}
	*p++ = (c>>6) + '0';
	*p++ = ((c>>3) & 7) + '0';
	*p++ = (c & 7) + '0';
	}
	*p = 0;
	return fmtstrcpy(fp, str);
	}