shithub: scc

ref: 8f241ba283b03cd4dffcd8bc1753bb3f500949f5
dir: /src/libmach/coff32/coff32getsect.c/

#include <stdio.h>
#include <stdlib.h>

#include <scc/mach.h>

#include "../libmach.h"
#include "coff32.h"

int
coff32getsect(Obj *obj)
{
	int i;
	unsigned sflags, type;
	unsigned long flags;
	FILHDR *hdr;
	struct coff32 *coff;
	SCNHDR *scn;
	Objsect *secs, *sp;

	coff  = obj->data;
	hdr = &coff->hdr;

	secs = malloc(sizeof(Objsect) * hdr->f_nscns);
	if (!secs)
		return -1;

	for (i = 0; i < hdr->f_nscns; i++) {
		sp = &secs[i];
		sp->next = (i < hdr->f_nscns-1) ? &secs[i+1] : NULL;
		scn = &coff->scns[i];
		flags = scn->s_flags;

		if (flags & STYP_TEXT) {
			type = 'T';
			sflags = SALLOC | SRELOC | SLOAD | SEXEC | SREAD;
			if (flags & STYP_NOLOAD)
				sflags |= SSHARED;
		} else if (flags & STYP_DATA) {
			type = 'D';
			sflags = SALLOC | SRELOC | SLOAD | SWRITE | SREAD;
			if (flags & STYP_NOLOAD)
				sflags |= SSHARED;
		} else if (flags & STYP_BSS) {
			type = 'B';
			sflags = SALLOC | SREAD | SWRITE;
		} else if (flags & STYP_INFO) {
			type = 'N';
			sflags = 0;
		} else if (flags & STYP_LIB) {
			type = 'T';
			sflags = SRELOC;
		} else if (flags & STYP_DSECT) {
			type = 'D';
			sflags = SRELOC;
		} else if (flags & STYP_PAD) {
			type = 'D';
			sflags = SLOAD;
		} else {
			type = 'D';  /* We assume that STYP_REG is data */
			sflags = SALLOC | SRELOC | SLOAD | SWRITE | SREAD;
		}

		if (flags & STYP_NOLOAD)
			sflags &= ~SLOAD;

		sp->name = scn->s_name;
		sp->id = i;
		sp->seek = scn->s_scnptr;
		sp->size = scn->s_size;
		sp->type = type;
		sp->flags = sflags;
		sp->align = 4; /* TODO: Check how align is defined in coff */
	}
	obj->secs = secs;
	obj->nsecs = i;

	return 1;
}