void asmb(void) { Prog *p; long t, magic; Optab *o; vlong vl; if(debug['v']) Bprint(&bso, "%5.2f asm\n", cputime()); Bflush(&bso); seek(cout, HEADR, 0); pc = INITTEXT; for(p = firstp; p != P; p = p->link) { if(p->as == ATEXT) { curtext = p; autosize = p->to.offset + 8; if(p->from3.type == D_CONST) { for(; pc < p->pc; pc++) CPUT(0); } } if(p->pc != pc) { diag("phase error %llux sb %llux", p->pc, pc); if(!debug['a']) prasm(curp); pc = p->pc; } curp = p; o = oplook(p); /* could probably avoid this call */ if(asmout(p, o, 0)) { p = p->link; pc += 4; } pc += o->size; } if(debug['a']) Bprint(&bso, "\n"); Bflush(&bso); cflush(); curtext = P; switch(HEADTYPE) { case 0: case 1: case 2: case 5: case 9: case 10: seek(cout, HEADR+textsize, 0); break; case 3: seek(cout, rnd(HEADR+textsize, 4), 0); break; } if(dlm){ char buf[8]; write(cout, buf, INITDAT-textsize); textsize = INITDAT; } for(t = 0; t < datsize; t += sizeof(buf)-100) { if(datsize-t > sizeof(buf)-100) datblk(t, sizeof(buf)-100); else datblk(t, datsize-t); } symsize = 0; lcsize = 0; if(!debug['s']) { if(debug['v']) Bprint(&bso, "%5.2f sym\n", cputime()); Bflush(&bso); switch(HEADTYPE) { case 0: case 1: case 2: case 5: case 9: case 10: seek(cout, HEADR+textsize+datsize, 0); break; case 3: seek(cout, rnd(HEADR+textsize, 4)+datsize, 0); break; } if(!debug['s']) asmsym(); if(debug['v']) Bprint(&bso, "%5.2f sp\n", cputime()); Bflush(&bso); if(!debug['s']) asmlc(); if(dlm) asmdyn(); if(HEADTYPE == 0 || HEADTYPE == 1) /* round up file length for boot image */ if((symsize+lcsize) & 1) CPUT(0); cflush(); } else if(dlm){ asmdyn(); cflush(); } seek(cout, 0L, 0); switch(HEADTYPE) { case 0: lput(0x1030107); /* magic and sections */ lput(textsize); /* sizes */ lput(datsize); lput(bsssize); lput(symsize); /* nsyms */ lput(entryvalue()); /* va of entry */ lput(0L); lput(lcsize); break; case 1: if(dlm) lput(0x80000000 | (4*21*21+7)); /* q.out magic */ else lput(4*21*21+7); /* q.out magic */ lput(textsize); /* sizes */ lput(datsize); lput(bsssize); lput(symsize); /* nsyms */ lput(entryvalue()); /* va of entry */ lput(0L); lput(lcsize); break; case 2: /* plan9 */ magic = 4*27*27+7; magic |= 0x00008000; /* fat header */ if(dlm) magic |= 0x80000000; /* dlm */ lput(magic); lput(textsize); /* sizes */ lput(datsize); lput(bsssize); lput(symsize); /* nsyms */ vl = entryvalue(); lput(PADDR(vl)); /* va of entry (real mode on boot) */ lput(0L); lput(lcsize); llput(vl); /* va of entry */ break; case 3: break; case 5: elf32(POWER, ELFDATA2MSB, 0, nil); break; case 9: /* ELF64 Header */ case 10: /* A2 weirdness */ elf64(POWER64, ELFDATA2MSB, 0, nil); break; } cflush(); }
void asmb(void) { Prog *p; long magic, t, etext; vlong vl; Optab *o; if(debug['v']) Bprint(&bso, "%5.2f asm\n", cputime()); Bflush(&bso); OFFSET = HEADR; seek(cout, OFFSET, 0); pc = INITTEXT; for(p = firstp; p != P; p = p->link) { if(p->as == ATEXT) { curtext = p; autosize = p->to.offset + PCSZ; } if(p->as == ADWORD && (pc & 7) != 0) { lputl(0); pc += 4; } if(p->pc != pc) { diag("phase error %llux sb %llux", p->pc, pc); if(!debug['a']) prasm(curp); pc = p->pc; } curp = p; o = oplook(p); /* could probably avoid this call */ asmout(p, o); pc += o->size; } if(debug['a']) Bprint(&bso, "\n"); Bflush(&bso); cflush(); /* output strings in text segment */ etext = INITTEXT + textsize; for(t = pc; t < etext; t += sizeof(buf)-100) { if(etext-t > sizeof(buf)-100) datblk(t, sizeof(buf)-100, 1); else datblk(t, etext-t, 1); } curtext = P; switch(HEADTYPE) { case 0: case 2: case 7: OFFSET = HEADR+textsize; seek(cout, OFFSET, 0); break; case 6: /* no header, padded segments */ OFFSET = rnd(HEADR+textsize, 4096); seek(cout, OFFSET, 0); break; } if(dlm){ char buf[8]; write(cout, buf, INITDAT-textsize); textsize = INITDAT; } for(t = 0; t < datsize; t += sizeof(buf)-100) { if(datsize-t > sizeof(buf)-100) datblk(t, sizeof(buf)-100, 0); else datblk(t, datsize-t, 0); } symsize = 0; lcsize = 0; if(!debug['s']) { if(debug['v']) Bprint(&bso, "%5.2f sym\n", cputime()); Bflush(&bso); switch(HEADTYPE) { case 0: debug['s'] = 1; break; case 2: OFFSET = HEADR+textsize+datsize; seek(cout, OFFSET, 0); break; case 6: /* no header, padded segments */ OFFSET += rnd(datsize, 4096); seek(cout, OFFSET, 0); break; case 7: break; } if(!debug['s']) asmsym(); if(debug['v']) Bprint(&bso, "%5.2f pc\n", cputime()); Bflush(&bso); if(!debug['s']) asmlc(); if(dlm) asmdyn(); cflush(); } else if(dlm){ seek(cout, HEADR+textsize+datsize, 0); asmdyn(); cflush(); } if(debug['v']) Bprint(&bso, "%5.2f header\n", cputime()); Bflush(&bso); OFFSET = 0; seek(cout, OFFSET, 0); switch(HEADTYPE) { case 0: /* no header */ case 6: /* no header, padded segments */ break; case 2: /* plan 9 */ magic = 4*28*28+7; magic |= 0x00008000; /* fat header */ if(dlm) magic |= 0x80000000; /* dlm */ lput(magic); /* magic */ lput(textsize); /* sizes */ lput(datsize); lput(bsssize); lput(symsize); /* nsyms */ vl = entryvalue(); lput(PADDR(vl)); /* va of entry */ lput(0L); lput(lcsize); llput(vl); /* va of entry */ break; case 7: /* elf */ debug['S'] = 1; /* symbol table */ elf64(ARM64, ELFDATA2LSB, 0, nil); break; } cflush(); }