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a little more 6l cleanup

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R=r
DELTA=51  (14 added, 24 deleted, 13 changed)
OCL=31968
CL=31971
This commit is contained in:
Russ Cox 2009-07-21 17:18:32 -07:00
parent 5a74c0b6ba
commit 335b3855c6
1 changed files with 26 additions and 36 deletions
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62
src/cmd/6l/asm.c
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@ -132,7 +132,7 @@ asmb(void)
vlong symdatva = 0x99LL<<32;
Elf64Hdr *eh;
Elf64PHdr *ph, *pph;
Elf64SHdr *sh, *dynsh;
Elf64SHdr *sh;
if(debug['v'])
Bprint(&bso, "%5.2f asmb\n", cputime());
@ -456,36 +456,21 @@ asmb(void)
ph->filesz = endelf() - ph->off;
ph->align = 1;
/* S header for interpreter */
sh = newElf64SHdr(".interp");
sh->type = SHT_PROGBITS;
sh->flags = SHF_ALLOC;
sh->addr = va;
sh->off = ph->off;
sh->addr = startva + sh->off;
sh->size = ph->filesz;
sh->addralign = 1;
/* dynamic load section */
ph = newElf64PHdr();
ph->type = PT_LOAD;
ph->flags = PF_R + PF_W;
ph->off = 0;
ph->vaddr = startva + ph->off;
ph->paddr = startva + ph->off;
ph->align = 8;
/* S headers inside dynamic load section */
dynsh = newElf64SHdr(".dynamic"); // must be first
dynsh->off = startelf();
seek(cout, ELFDYNAMICSIZE, 1); // leave room for dynamic table
sh = newElf64SHdr(".hash");
sh->type = SHT_HASH;
sh->flags = SHF_ALLOC;
sh->entsize = 4;
sh->addr = va;
sh->off = seek(cout, 0, 1);
sh->off = startelf();
hashoff = sh->off;
sh->addr = startva + sh->off;
/* temporary hack: 8 zeroes means 0 buckets, 0 chains */
@ -497,7 +482,6 @@ asmb(void)
sh->type = SHT_PROGBITS;
sh->flags = SHF_ALLOC+SHF_WRITE;
sh->entsize = 8;
sh->addr = va;
sh->off = startelf();
sh->addr = startva + sh->off;
sh->size = endelf() - sh->off;
@ -507,21 +491,17 @@ asmb(void)
sh->type = SHT_PROGBITS;
sh->flags = SHF_ALLOC+SHF_WRITE;
sh->entsize = 8;
sh->addr = va;
sh->off = startelf();
sh->addr = startva + sh->off;
sh->size = endelf() - sh->off;
sh->addralign = 8;
/* +8 necessary for now to silence readelf addressing at end of hash section */
ph->filesz = endelf() - ph->off +8; /* dynamic section maps these shdrs' data */
ph->memsz = ph->filesz;
dynsh->type = SHT_DYNAMIC;
dynsh->flags = SHF_ALLOC+SHF_WRITE;
dynsh->entsize = 16;
dynsh->addr = startva + dynsh->off;
seek(cout, dynsh->off, 0);
sh = newElf64SHdr(".dynamic");
sh->type = SHT_DYNAMIC;
sh->flags = SHF_ALLOC+SHF_WRITE;
sh->entsize = 16;
sh->addr = startva + sh->off;
sh->off = startelf();
elf64writedynent(DT_HASH, startva+hashoff);
elf64writedynent(DT_STRTAB, startva+ELF64FULLHDRSIZE-STRTABSIZE);
elf64writedynent(DT_SYMTAB, startva);
@ -531,19 +511,29 @@ asmb(void)
elf64writedynent(DT_STRSZ, STRTABSIZE);
elf64writedynent(DT_SYMENT, 0);
elf64writedynent(DT_NULL, 0);
cflush();
dynsh->size = seek(cout, 0, 1) - dynsh->off;
dynsh->addralign = 8;
sh->size = endelf() - sh->off;
sh->addralign = 8;
/* dynamic section */
/* PT_DYNAMIC for .dynamic section */
ph = newElf64PHdr();
ph->type = PT_DYNAMIC;
ph->flags = PF_R + PF_W;
ph->off = dynsh->off;
ph->filesz = dynsh->size;
ph->memsz = dynsh->size;
ph->off = sh->off;
ph->vaddr = startva + ph->off;
ph->paddr = startva + ph->off;
ph->filesz = sh->size;
ph->memsz = sh->size;
ph->align = 8;
/* PT_LOAD for all dynamic sections */
ph = newElf64PHdr();
ph->type = PT_LOAD;
ph->flags = PF_R + PF_W;
ph->off = 0;
ph->vaddr = startva + ph->off;
ph->paddr = startva + ph->off;
ph->filesz = sh->off + sh->size - ph->off;
ph->memsz = ph->filesz;
ph->align = 8;
}