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#include "obj.h"
#include "common.h"
#include "ir.h"
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
void elfinit(void);
void elfaddsym(const char *, int info, enum section, uvlong value, uvlong size);
void elfreloc(const char *sym, enum relockind, enum section, uint off, vlong addend);
void elfputdat(const struct irdat *);
void elffini(struct wbuf *);
struct objfile objout;
enum { NTEXT = 4<<20 /* 4MiB */ };
void
objini(const char *file)
{
assert(!objout.file);
objout.file = file;
objout.code = objout.textbegin = mapzeros(NTEXT);
objout.textend = objout.textbegin + NTEXT;
switch (mctarg->objkind) {
case OBJELF: elfinit(); break;
}
}
void
objdeffunc(const char *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;
}
}
void
objreloc(const char *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.file, O_WRONLY | O_CREAT | O_TRUNC, 0666));
if (out.fd < 0) fatal(NULL, "could not open %'s for writing: %s", objout.file, strerror(errno));
for (int i = 0; i < dattab.n; ++i) {
elfputdat(&dattab.p[i]);
}
switch (mctarg->objkind) {
case OBJELF: elffini(&out); break;
}
munmap(objout.textbegin, NTEXT);
ioflush(&out);
close(out.fd);
}
/* vim:set ts=3 sw=3 expandtab: */
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