projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 8cd657f4 JF |
1 | #include "global.h" |
| 2 | #include <a.out.h> | |
| 3 | #define round(x,s) ((((x)-1) & ~((s)-1)) + (s)) | |
| 4 | ||
| 5 | char *stabf = 0; | |
| 6 | int fvirgin = 1; | |
| 7 | ||
| 8 | lispval | |
| 9 | Lffasl(){ | |
| 10 | register struct argent *mlbot = lbot; | |
| 11 | register lispval work; | |
| 12 | int fildes, totsize, readsize; | |
| 13 | lispval csegment(); | |
| 14 | char *sbrk(), *currend, *tfile, cbuf[512], *mytemp(), *gstab(); | |
| 15 | struct exec header; | |
| 16 | snpand(2); | |
| 17 | ||
| 18 | if(np - mlbot != 3 || TYPE(mlbot[1].val)!=ATOM) | |
| 19 | mlbot[1].val = error("Incorrect .o file specification",TRUE); | |
| 20 | if(np - mlbot != 3 || TYPE(mlbot[2].val)!=ATOM) | |
| 21 | mlbot[2].val = error("Incorrect entry specification for fasl" | |
| 22 | ,TRUE); | |
| 23 | if(np - mlbot != 3 || TYPE(mlbot[3].val)!=ATOM || mlbot[3].val==nil) | |
| 24 | mlbot[3].val = error( "Bad associated atom name for fasl",TRUE); | |
| 25 | ||
| 26 | /* | |
| 27 | * Invoke loader. | |
| 28 | */ | |
| 29 | currend = sbrk(0); | |
| 30 | tfile = mytemp(); | |
| 31 | sprintf(cbuf, | |
| 32 | "nld -A %s -T %x -N %s -e %s -o %s", | |
| 33 | gstab(), | |
| 34 | currend, | |
| 35 | mlbot[1].val->pname, | |
| 36 | mlbot[2].val->pname, | |
| 37 | tfile); | |
| 38 | printf(cbuf); fflush(stdout); | |
| 39 | if(system(cbuf)!=0) { | |
| 40 | unlink(tfile); | |
| 41 | return(nil); | |
| 42 | } | |
| 43 | if(fvirgin) | |
| 44 | fvirgin = 0; | |
| 45 | else | |
| 46 | unlink(stabf); | |
| 47 | stabf = tfile; | |
| 48 | if((fildes = open(tfile,0))<0) | |
| 49 | return(nil); | |
| 50 | /* | |
| 51 | * Read a.out header to find out how much room to | |
| 52 | * allocate and attempt to do so. | |
| 53 | */ | |
| 54 | if(read(fildes,(char *)&header,sizeof(header)) <= 0) { | |
| 55 | close(fildes); | |
| 56 | return(nil); | |
| 57 | } | |
| 58 | readsize = header.a_text + header.a_data; | |
| 59 | totsize = readsize + header.a_bss; | |
| 60 | totsize = round(totsize,512); | |
| 61 | /* | |
| 62 | * Fix up system indicators, typing info, etc. | |
| 63 | */ | |
| 64 | currend = (char *)csegment(int_name,totsize/4); | |
| 65 | ||
| 66 | if(readsize!=read(fildes,currend,readsize)) | |
| 67 | return(nil); | |
| 68 | work = newfunct(); | |
| 69 | work->entry = (lispval (*)())header.a_entry; | |
| 70 | work->discipline = lambda; | |
| 71 | return(mlbot[3].val->fnbnd = work); | |
| 72 | } | |
| 73 | #include "types.h" | |
| 74 | #include <sys/stat.h> | |
| 75 | static char myname[100]; | |
| 76 | char * | |
| 77 | gstab() | |
| 78 | { | |
| 79 | register char *cp, *cp2; char *getenv(); | |
| 80 | struct stat stbuf; | |
| 81 | extern char **Xargv; | |
| 82 | ||
| 83 | if(stabf==0) { | |
| 84 | cp = getenv("PATH"); | |
| 85 | if(cp==0) | |
| 86 | cp=":/usr/ucb:/bin:/usr/bin"; | |
| 87 | if(*cp==':') { | |
| 88 | cp++; | |
| 89 | if(stat(Xargv[0],&stbuf)==0) { | |
| 90 | strcpy(myname,Xargv[0]); | |
| 91 | return(stabf = myname); | |
| 92 | } | |
| 93 | } | |
| 94 | for(;*cp;) { | |
| 95 | ||
| 96 | /* copy over current directory | |
| 97 | and then append argv[0] */ | |
| 98 | ||
| 99 | for(cp2=myname;(*cp)!=0 && (*cp)!=':';) | |
| 100 | *cp2++ = *cp++; | |
| 101 | *cp2++ = '/'; | |
| 102 | strcpy(cp2,Xargv[0]); | |
| 103 | if(*cp) cp++; | |
| 104 | if(0!=stat(myname,&stbuf)) continue; | |
| 105 | return(stabf = myname); | |
| 106 | } | |
| 107 | error("Could not find which file is being executed.",FALSE); | |
| 108 | } else return (stabf); | |
| 109 | } |