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// Inferno utils/6l/l.h
// http://code.google.com/p/inferno-os/source/browse/utils/6l/l.h
//
// 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 "6.out.h"
#ifndef EXTERN
#define EXTERN extern
#endif
enum
{
thechar = '6',
MaxAlign = 32, // max data alignment
// Loop alignment constants:
// want to align loop entry to LoopAlign-byte boundary,
// and willing to insert at most MaxLoopPad bytes of NOP to do so.
// We define a loop entry as the target of a backward jump.
//
// gcc uses MaxLoopPad = 10 for its 'generic x86-64' config,
// and it aligns all jump targets, not just backward jump targets.
//
// As of 6/1/2012, the effect of setting MaxLoopPad = 10 here
// is very slight but negative, so the alignment is disabled by
// setting MaxLoopPad = 0. The code is here for reference and
// for future experiments.
//
LoopAlign = 16,
MaxLoopPad = 0,
FuncAlign = 16
};
EXTERN int PtrSize;
EXTERN int IntSize;
EXTERN int RegSize;
#define P ((Prog*)0)
#define S ((LSym*)0)
#define TNAME (ctxt->cursym?ctxt->cursym->name:noname)
enum
{
MINSIZ = 8,
STRINGSZ = 200,
MINLC = 1,
MAXIO = 8192,
MAXHIST = 40, /* limit of path elements for history symbols */
};
#pragma varargck type "I" uchar*
EXTERN LSym* datap;
EXTERN int debug[128];
EXTERN char literal[32];
EXTERN int32 lcsize;
EXTERN char* rpath;
EXTERN int32 spsize;
EXTERN LSym* symlist;
EXTERN int32 symsize;
EXTERN vlong textstksiz;
EXTERN vlong textarg;
int Iconv(Fmt *fp);
void adddynlib(char *lib);
void adddynrel(LSym *s, Reloc *r);
void adddynrela(LSym *rela, LSym *s, Reloc *r);
void adddynsym(Link *ctxt, LSym *s);
int archreloc(Reloc *r, LSym *s, vlong *val);
void asmb(void);
int elfreloc1(Reloc *r, vlong sectoff);
void elfsetupplt(void);
void listinit(void);
int machoreloc1(Reloc *r, vlong sectoff);
void main(int argc, char *argv[]);
void parsetextconst(vlong arg);
vlong rnd(vlong v, vlong r);
/* Native is little-endian */
#define LPUT(a) lputl(a)
#define WPUT(a) wputl(a)
#define VPUT(a) vputl(a)
/* Used by ../ld/dwarf.c */
enum
{
DWARFREGSP = 7
};
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