cygnus.c

mips架构的bootloader,99左右的版本 但源代码现在没人更新了

/*************************************************************
 * File: tools/cygnus.c
 * Purpose: compiler driver for pmcc command for GNU tools from 
 *          Cygnus (ECOFF format).
 * Author: Phil Bunce ([e-mail])
 * Revision History:
 *	970304	Added -driver and -ice
 *	970313	Added -ssyms option (separate symbols)
 *	970314	Removed $LSIPKG refs in crtn pathnames
 *	970417	Added check for nfiles==0
 *	970902	Removed -ice
 */

#include <stdio.h>
#include <malloc.h>
#include <string.h>
#include "../include/defines.h"
#include "misc.h"

/* set various defaults */
int vflag = 0;	/* verbose flag */
char *prom = "";
int fast = 1;
int ssyms_flag;
char *syms = "-s";
char *chksum = "";
char *ofile = "a";
char LIBM[100] = "/usr/lib/cmplrs/cc";

int driver;
char tmp[400],tmp2[400];
char *ENDIAN,*Gnum,*LSIPMCC;
char *COMP_HOST_ROOT;
Str flags,cflags,asflags,ldflags,ppflags,rflags,llist,ilist,ofiles,LIBS;
Str *strlst[] = {&flags,&cflags,&asflags,&ldflags,&ppflags,&rflags,&llist,
	&ilist,&ofiles,&LIBS,0};
char *LSIPKG,*CYGROOT;
char LIBC[100];
char objfile[100];
char tstart[10];
char *dstart;
char *files[100];
char *CC;
int nfiles,msim;
char stoppoint;
char crt0[100];
char tmppath[200],cpppath[200];
char mname[32]; /* module object name */

char *ld_cmd_file1[] = {
	"OUTPUT_FORMAT(\"ecoff-bigmips\")",
	"OUTPUT_ARCH(mips)",
	"ENTRY(_start)",
	"SECTIONS",
	"{",
	0};
	/*  .text 0xa0d80000 :  */
char *ld_cmd_file2[] = {
	"  {",
	"    _ftext = .;",
	"    *(.text)",
	"    CREATE_OBJECT_SYMBOLS",
	"  }",
	"  .init    . : { *(.init)    } =0",
	"  .fini    . : { *(.fini)    } =0",
	"  .ctors   . : { *(.ctors)   }",
	"  .dtors   . : { *(.dtors)   }",
	"  _etext = .;",
	"  etext = .;",
	"  .reginfo . : { *(.reginfo) }",
	0};
	/*  .data     0x00d88000 :  */
char *ld_cmd_file3[] = {
	"  {",
	"    _fdata = .;",
	"    *(.data)",
	"  }",
	"  .rdata   . : { *(.rdata)   }",
	"  .rodata  . : { *(.rodata)  }",
	"  .rodata1 . : { *(.rodata1) }",
	"  .data1   . : { *(.data1) }",
	"  __gp_start = .;",
	"  .lit8    . : { *(.lit8) }",
	"  .lit4    . : { *(.lit4) }",
	"  .sdata   . : { *(.sdata) }",
	"  _edata  =  .;",
	"  edata   =  .;",
	"  .sbss    . : {",
	"    *(.sbss) *(.scommon) ",
	"  }",
	"  __gp_end = .;",
	"  .bss     . : {",
	"    *(.bss) *(COMMON) ",
	"  }",
	"  _fbss = SIZEOF(.sbss) ? ADDR(.sbss) : ADDR(.bss);",
	"  __bss_start = _fbss;",
	"  _gp = __gp_start + ((__gp_end - __gp_start) / 2);",
	"  _end = .;",
	"  end  = .;",
	"}",
	0,};

/*************************************************************
*  main(argc,argv)
*/
main(argc,argv)
int argc;
char *argv[];
{
int i,status,SZ,sz;
char *e,*p,h[20],*vtmp;
FILE *cfp,*sfp;
char tmp2[100];
Str *f;

SZ = 0;
if (! (LSIPKG=getenv("LSIPKG"))) {
	fprintf(stderr,"pmcc: LSIPKG not set\n");
	exit(1);
	}

if (! (CYGROOT=getenv("CYGROOT"))) {
	fprintf(stderr,"pmcc: CYGROOT not set\n");
	exit(1);
	}

/* for backward compatability we set LSIPMCC */
if (! (LSIPMCC=getenv("LSIPMCC"))) LSIPMCC = "";

#ifdef SREC
fast = 0;
#endif

#ifdef CLIENTPC
sprintf(tmp,"%08x",CLIENTPC);
strcpy(tstart,tmp);
#else
strcpy(tstart,"80020000");
#endif

strcpy(tmppath,"/tmp/PMXXXXXX");
mktemp(&tmppath[5]);

#ifdef LENDEF
ENDIAN = "l";
#else
ENDIAN = "b";
#endif

Gnum = "o";
CC = "mips-idt-ecoff-gcc";
strcpy(cpppath,CPPPATH);
Strcpy(&LIBS,"");

sprintf(tmp,"-I%s/include",LSIPKG);
Strcpy(&ilist,tmp);
sprintf(tmp,"-L%s/lib/%%s%%s",LSIPKG);
Strcpy(&llist,tmp);
sprintf(tmp,"-DPMCC -DCYGNUS %s",LSIPMCC);
Strcpy(&ppflags,tmp);
Strcpy(&flags,"");

#ifdef MSIM
msim = 1;
strcpy(crt0,"$LSIPKG/lib/bo/crt2.o");
strcpy(tstart,"9fc00000");
fast = 0;
#endif

/*
# This while loop does several jobs:
# 	1. strips off any pmcc defined options
# 	2. some options, if specified, must preceed path specs
# 	   so extract them from here, and add them to flags.
# 	3. find the output filename, if specified
*/

for (i=1;i < argc;i++) {
	if (strequ(argv[i],"-fast")) fast = 1;
	else if (!strncmp(argv[i],"-mips",5)) addarg(&flags,argv[i]);
	else if (strequ(argv[i],"-msoft-float")) {
		addarg(&flags,argv[i]);
		}
	else if (strequ(argv[i],"-driver")) {
		driver = 1;
		syms = 0;
		sprintf(crt0,"%s/lib/%sg/crt3.o",LSIPKG,ENDIAN);
		}
#if 0 /* 970902 */
	else if (strequ(argv[i],"-ice")) {
		sprintf(crt0,"%s/lib/%so/crt4.o",LSIPKG,ENDIAN);
		}
#endif
	else if (strequ(argv[i],"-prom")) {
		prom = "-p";
		fast = 0;
		}
	else if (strequ(argv[i],"-msim")) {
		msim = 1;
		strcpy(crt0,"$LSIPKG/lib/bo/crt2.o");
		strcpy(tstart,"9fc00000");
		fast = 0;
		}
	else if (strequ(argv[i],"-crt0")) strcpy(crt0," ");
	else if (strequ(argv[i],"-T")) {
		i++;
		strcpy(tstart,argv[i]);
		}
	else if (strequ(argv[i],"-D")) {
		i++;
		dstart = argv[i];
		}
	else if (!strncmp(argv[i],"-D",2)) addarg(&ppflags,argv[i]);
	else if (strequ(argv[i],"-target")) {
		/* just to keep Sun make happy */
		i++;
		}
	else if (strequ(argv[i],"-L")) Strcpy(&llist,"");
	else if (!strncmp(argv[i],"-L",2)) addarg(&llist,argv[i]);
	else if (!strncmp(argv[i],"-l",2)) {
		sprintf(tmp,"-lx%s",&argv[i][2]);
		addarg(&LIBS,tmp);
		}
	else if (strequ(argv[i],"-G")) {
		i++;
		addarg(&flags,"-G");
		addarg(&flags,argv[i]);
		if (strequ(argv[i],"0")) Gnum = "g";
		else Gnum = "o";
		}
	else if (strequ(argv[i],"-I")) Strcpy(&ilist,"");
	else if (!strncmp(argv[i],"-I",2)) addarg(&ppflags,argv[i]);
	else if (strequ(argv[i],"-g")) addarg(&flags,argv[i]);
	else if (strequ(argv[i],"-c")) {
		stoppoint = 'c';
		addarg(&cflags,argv[i]);
		}
	else if (strequ(argv[i],"-S")) {
		stoppoint = 'S';
		addarg(&cflags,argv[i]);
		}
	else if (strequ(argv[i],"-v")) {
		vflag = 1;
		addarg(&flags,argv[i]);
		}
	else if (strequ(argv[i],"-srec")) fast = 0;
	else if (strequ(argv[i],"-chksum")) chksum = "-c";
	else if (strequ(argv[i],"-syms")) syms = "";
	else if (strequ(argv[i],"-ssyms")) {
		syms = "";
		ssyms_flag = 1;
		}
	else if (!strncmp(argv[i],"-O",2)) addarg(&cflags,argv[i]);
	else if (strequ(argv[i],"-float")) {
		addarg(&flags,argv[i]);
		addarg(&ppflags,"-DFLOAT");
		SZ = 1; }
	else if (strequ(argv[i],"-double")) SZ = 1;
	else if (strequ(argv[i],"-EB")) ENDIAN = "b";
	else if (strequ(argv[i],"-EL")) ENDIAN = "l";
	else if (!strncmp(argv[i],"-W",2)) {
		for (p=argv[i];*p;p++) if (*p == ',') *p = ' ';
		switch (argv[i][2]) {
			case 'c' : f = &cflags; break;
			case 'a' : f = &asflags; break;
			case 'l' : f = &ldflags; break;
			}
		addarg(f,&argv[i][4]);
		}
	else if (strequ(argv[i],"-o")) {
		i++;
		ofile = argv[i];
		}
	else if (strequ(argv[i],"-lm")) {
		fprintf(stderr,"-lm Not supported by this toolset\n");
		Exit(1);
		}
	else if (argv[i][0] == '-') {
		fprintf(stderr,"%s: bad arg\n",argv[i]);
		Exit(1);
		}
	else files[nfiles++] = argv[i];
	}

if (strequ(ENDIAN,"b")) {
	addarg(&asflags,"-EB");
	addarg(&cflags,"-EB");
	addarg(&ppflags,"-DMIPSEB");
	}
else {
	addarg(&asflags,"-EL");
	addarg(&cflags,"-EL");
	addarg(&ppflags,"-DMIPSEL");
	}

strcpy(objfile,ofile);
if (strequ(ofile,"a")) strcpy(objfile,"a.out");

if (stoppoint==0) {
	addarg(&cflags,"-c"); /* never want the cc driver to call ld */
	addarg(&ldflags,"-o");
	addarg(&ldflags,objfile);
	}
else if (nfiles == 1) {
	e = extent(files[0]);
	getHead(h,files[0]);
	if (strequ(e,"c")) {
		addarg(&cflags,"-o");
		if (!strequ(ofile,"a")) addarg(&cflags,ofile);
		else {
			if (stoppoint == 'c') sprintf(tmp,"%s.o",h);
			else sprintf(tmp,"%s.s",h);
			addarg(&cflags,tmp);
			}
		}
	else if (strequ(e,"s")) {
		addarg(&asflags,"-o");
		if (!strequ(ofile,"a")) addarg(&asflags,ofile);
		else {
			sprintf(tmp,"%s.o",h);
			addarg(&asflags,tmp);
			}
		}
	}

sprintf(tmp,llist.str,ENDIAN,Gnum,ENDIAN,Gnum);
addarg(&ldflags,tmp);
addarg(&cflags,ilist.str);
addarg(&ppflags,ilist.str);

addarg(&asflags,"-DLANGUAGE_ASSEMBLY");
addarg(&cflags,"-DLANGUAGE_C");


if (nfiles == 0) {
	printf("Fatal error: no files specified.\n"); 
	exit(1); 
	} 

/* now invoke the compiler */
for (i=0;i<nfiles;i++) {
	e = extent(files[i]);
	getHead(h,files[i]);
        if (nfiles == 1 && !strequ(ofile,"a") && stoppoint != 0)
                strcpy(mname,ofile);
        else sprintf(mname,"%s.o",h);
	if (strequ(e,"s")) {
		sprintf(tmp,"fixhash(%s,%s.t1)",files[i],tmppath);
		if (vflag) fprintf(stderr,"%s\n",tmp);
		sprintf(tmp,"%s.t1",tmppath);
		fixhash(files[i],tmp);

		getRoot(tmp2,files[i]);
		sz = strlen(cpppath)+strlen(tmp2)+strlen(ppflags.str)+
		     strlen(tmppath)+strlen(tmppath);
		vtmp = malloc(sz+40);
		sprintf(vtmp,"%s/cpp -I%s %s %s %s.t1 %s.t2",
			cpppath,tmp2,ppflags.str,"-DLANGUAGE_ASSEMBLY",
			tmppath,tmppath); 
		if (vflag) fprintf(stderr,"%s\n",vtmp);
		if (status=System(vtmp)) Exit(status);
		free(vtmp);

		sprintf(tmp,"%s.t2",tmppath);
		sprintf(tmp2,"%s.S",tmppath);
		if (vflag) fprintf(stderr,"fixstruct(%s,%s)\n",tmp,tmp2);
		fixstruct(tmp,tmp2);

		sz = strlen(CC)+strlen(flags.str)+strlen(ppflags.str)+
		     strlen(tmp2)+ strlen(asflags.str)+strlen(mname)+
		     strlen(tmppath);
		vtmp = malloc(sz+20);
		sprintf(vtmp,"%s -c %s %s -I%s %s -o %s %s.S",CC,flags.str,
			ppflags.str,tmp2,asflags.str,mname,tmppath);
		if (vflag) fprintf(stderr,"%s\n",vtmp);
		if (status=System(vtmp)) Exit(status);
		free(vtmp);

		getHead(tmp,files[i]);
		strcat(tmp,".o");
		addarg(&ofiles,tmp);
		}
	else if (strequ(e,"c")) {
		sz = strlen(CC)+strlen(ppflags.str)+strlen(flags.str)+
		     strlen(cflags.str)+ strlen(files[i]);
		vtmp = malloc(sz+10);
		sprintf(vtmp,"%s %s %s %s %s",CC,ppflags.str,flags.str,
			cflags.str,files[i]);
		if (vflag) fprintf(stderr,"%s\n",vtmp);
		if (status=System(vtmp)) Exit(status);
		free(vtmp);
		getHead(tmp,files[i]);
		strcat(tmp,".o");
		addarg(&ofiles,tmp);
		}
	else if (strequ(e,"o")) {
		addarg(&ofiles,files[i]);
		}
	else {
		fprintf(stderr,"%s: bad extent\n",e);
		Exit(1);
		}
	}

if (stoppoint != 0) Exit(0);

/* Select math library */
if (SZ) {
	sprintf(tmp,"%s/libm/%s/libm.a",LSIPKG,ENDIAN);
	if (fileExists(tmp)) strcpy(LIBM,tmp);
	}

/* Select C library */
sprintf(LIBC,"%s/lib/%s%s",LSIPKG,ENDIAN,Gnum);
if (crt0[0]==0) sprintf(crt0,"%s/crt0x.o",LIBC);

/* -nostdlib */
sprintf(tmp,"%s.lk",ofile);
sfp = fopen(tmp,"w");
if (!sfp) {
	fprintf(stderr,"can't open %s\n",tmp);
	exit(1);
	}
wrfile(sfp,ld_cmd_file1);
fprintf(sfp,".text 0x%s :\n",tstart);
wrfile(sfp,ld_cmd_file2);
if (dstart) fprintf(sfp,".data 0x%s :\n",dstart);
else fprintf(sfp,".data ALIGN(8) :\n");
wrfile(sfp,ld_cmd_file3);
sprintf(tmp,"mips-idt-ecoff-ld -N -M -T %s.lk %s %s %s -lxc %s > %s.map",
	ofile,ldflags.str,crt0,ofiles.str,LIBS.str,ofile);
fclose(sfp);


if (status=System(tmp)) Exit(status);

if (driver) {
	sprintf(tmp,"%s.rec",ofile);
	str2file(tmp,"SD");
	sprintf(tmp,"gensrec %s >> %s.rec",objfile,ofile);
	if (status=System(tmp)) Exit(status);
	Exit(0);
	}

/* now make the appropriate download records */
if (fast) sprintf(tmp,"genfrec %s %s %s > %s.rec",syms,chksum,objfile,ofile);
else sprintf(tmp,"gensrec %s %s %s > %s.rec",prom,syms,objfile,ofile);
if (status=System(tmp)) Exit(status);

if (!ssyms_flag) Exit(0);

if (fast) sprintf(tmp,"genfrec -e %s > %s.sym",objfile,ofile);
else sprintf(tmp,"gensrec -e %s > %s.sym",objfile,ofile);
if (status=System(tmp)) Exit(status);


Exit(0);
}

/*************************************************************
*  wrfile(fp,msg)
*/
wrfile(fp,msg)
FILE *fp;
char *msg[];
{
int i;

for (i=0;msg[i];i++) fprintf(fp,"%s\n",msg[i]);
}

/*************************************************************
*  mksyms(f)
*/
mksyms(f)
char *f;
{
FILE *mfp,*ofp;
char buf[100],*field[10];
int nf,flag,csum,len;

if (vflag) fprintf(stderr,"mksyms %s.map > %s.rec\n",f,f);

flag = 0;
sprintf(tmp,"%s.map",f);
mfp = fopen(tmp,"r");
if (mfp == 0) {
	fprintf(stderr,"Can't open %s\n",tmp);
	Exit(1);
	}

sprintf(tmp,"%s.rec",f);
ofp = fopen(tmp,"w");
if (ofp == 0) {
	fprintf(stderr,"Can't open %s\n",tmp);
	Exit(1);
	}

for (;;) {
	if (!fgets(buf,100,mfp)) break;
	buf[strlen(buf)-1] = 0;
	if (strlen(buf)==0) continue;
	if (buf[0] != ' ') continue;
	nf = argvize(field,buf);
	if (nf != 2) continue;
	if (strlen(field[0]) != 8) continue;
	csum = 0;
	len = strlen(field[1])+8+2;
	fprintf(ofp,"S4%02X%s%s,%02x\n",len,field[0],field[1],csum);
	}
fclose(mfp);
fclose(ofp);
}

#ifndef Exit
/*************************************************************
*  Exit(x)
*/
Exit(x)
int x;
{
int i;
for (i=0;strlst[i];i++) {
	if (strlst[i]->str) free(strlst[i]->str);
	}
sprintf(tmp,"%s.S",tmppath);
if (fileExists(tmp)) unlink(tmp);
sprintf(tmp,"%s.t1",tmppath);
if (fileExists(tmp)) unlink(tmp);
sprintf(tmp,"%s.t2",tmppath);
if (fileExists(tmp)) unlink(tmp);
exit(((x)>127)?1:(x));
}
#endif