diff options
Diffstat (limited to 'obj/obj.c')
| -rw-r--r-- | obj/obj.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/obj/obj.c b/obj/obj.c deleted file mode 100644 index 12f0db7..0000000 --- a/obj/obj.c +++ /dev/null @@ -1,118 +0,0 @@ -#include "obj.h" -#include "../ir/ir.h" -#include <errno.h> -#include <fcntl.h> -#include <unistd.h> - - -void elfinit(void); -enum section elfhassym(internstr , uint *value); -void elfaddsym(internstr , int info, enum section, uvlong value, uvlong size); -void elfreloc(internstr sym, enum relockind, enum section, uint off, vlong addend); -void elffini(struct wbuf *); - -struct objfile objout; - -enum { NTEXT = 4<<20 /* 4MiB */ }; - -void -objini(const char *infile, const char *outfile) -{ - assert(!objout.outfile); - objout.infile = infile; - objout.outfile = outfile; - objout.code = objout.textbegin = mapzeros(NTEXT); - objout.textend = objout.textbegin + NTEXT; - - switch (mctarg->objkind) { - case OBJELF: elfinit(); break; - } -} - -void -objdeffunc(internstr nam, bool globl, uint off, uint siz) -{ - switch (mctarg->objkind) { - case OBJELF: - elfaddsym(nam, /*STT_LOCAL/GLOBAL*/globl << 4 | /*STT_FUNC*/2, Stext, off, siz); - break; - } -} - -enum section -objhassym(internstr name, uint *off) -{ - return elfhassym(name, off); -} - -uint -objnewdat(internstr name, enum section sec, bool globl, uint siz, uint align) -{ - struct objfile *o = &objout; - uint off; - assert(siz && align && ispo2(align)); - switch (sec) { - default: assert(0); - case Stext: - assert(align <= targ_primsizes[TYPTR]); - assert(o->textend - siz > o->code); - while ((o->code - o->textbegin) & (align - 1)) ++o->code; - off = o->code - o->textbegin; - o->code += siz; - break; - case Srodata: - if (align > o->rodataalign) o->rodataalign = align; - while (o->rodata.n & (align - 1)) vpush(&o->rodata, 0); - off = o->rodata.n; - vresize(&o->rodata, o->rodata.n + siz); - memset(o->rodata.p+off, 0, siz); - break; - case Sdata: - if (align > o->dataalign) o->dataalign = align; - while (o->data.n & (align - 1)) vpush(&o->data, 0); - off = o->data.n; - vresize(&o->data, o->data.n + siz); - memset(o->data.p+off, 0, siz); - break; - case Sbss: - if (align > o->bssalign) o->bssalign = align; - off = alignup(o->nbss, align); - o->nbss = off + siz; - break; - } - - switch (mctarg->objkind) { - case OBJELF: - elfaddsym(name, /*STT_LOCAL/GLOBAL*/globl<<4 | /*STT_OBJECT*/1, sec, off, siz); - break; - } - return off; -} - -void -objreloc(internstr sym, enum relockind reloc, enum section section, uint off, vlong addend) -{ - switch (mctarg->objkind) { - case OBJELF: - elfreloc(sym, reloc, section, off, addend); - break; - } -} - -void -objfini(void) -{ - static char buf[1<<12]; - struct wbuf out = FDBUF(buf, sizeof buf, open(objout.outfile, O_WRONLY | O_CREAT | O_TRUNC, 0666)); - if (out.fd < 0) fatal(NULL, "could not open %'s for writing: %s", objout.outfile, strerror(errno)); - - switch (mctarg->objkind) { - case OBJELF: elffini(&out); break; - } - - munmap(objout.textbegin, NTEXT); - ioflush(&out); - close(out.fd); -} - -/* vim:set ts=3 sw=3 expandtab: */ |