/* Load phdrs and scns included in the sections. scns will be sorted. */
seg_t *getSegs(FILE *fp, const char *path,
Elf32_Ehdr *ehdr, const scn_t *scns)
{
Elf32_Half i, j, k;
scn_t *tmp;
seg_t *segs;
if (fp == NULL || path == NULL || ehdr == NULL || scns == NULL)
return NULL;
segs = malloc(ehdr->e_phnum * sizeof(seg_t));
if (segs == NULL) {
perror(path);
return NULL;
}
if (fseek(fp, ehdr->e_phoff, SEEK_SET)) {
perror(path);
return NULL;
}
i = 0;
while (i < ehdr->e_phnum) {
if (fread(&segs[i].phdr, sizeof(segs[i].phdr), 1, fp) <= 0) {
perror(path);
free(segs);
return NULL;
}
if (segs[i].phdr.p_type == PT_ARM_EXIDX)
ehdr->e_phnum--;
else {
segs[i].shnum = 0;
i++;
}
}
mapOverScnSeg(segCntScns, (scn_t *)scns, segs, ehdr);
for (i = 0; i < ehdr->e_phnum; i++) {
segs[i].scns = malloc(segs[i].shnum * sizeof(scn_t));
if (segs[i].scns == NULL) {
perror(NULL);
while (i) {
i--;
free(segs[i].scns);
}
free(segs);
return NULL;
}
segs[i].shnum = 0;
}
mapOverScnSeg(segCntMapScns, (scn_t *)scns, segs, ehdr);
for (i = 0; i < ehdr->e_phnum; i++) {
if (segs[i].phdr.p_type != PT_LOAD)
continue;
for (j = 1; j < segs[i].shnum; j++) {
tmp = segs[i].scns[j];
if (segs[i].scns[j - 1]->shdr.sh_addr > tmp->shdr.sh_addr) {
k = j;
do {
segs[i].scns[k] = segs[i].scns[k - 1];
k--;
} while (k > 0 &&
segs[i].scns[k - 1]->shdr.sh_addr > tmp->shdr.sh_addr);
segs[i].scns[k] = tmp;
}
}
}
return segs;
}
/* Load phdrs and scns included in the sections. scns will be sorted. */
seg_t *getSegs(FILE *fp, const char *path, Elf32_Ehdr *ehdr,
scn_t *scns, seg_t **rela, const scn_t *relMark)
{
Elf32_Half i, j, k, relaPhndx;
scn_t *tmp;
seg_t *segs;
if (fp == NULL || path == NULL || ehdr == NULL
|| scns == NULL || rela == NULL || relMark == NULL)
{
return NULL;
}
segs = malloc(ehdr->e_phnum * sizeof(seg_t));
if (segs == NULL) {
perror(path);
return NULL;
}
if (fseek(fp, ehdr->e_phoff, SEEK_SET)) {
perror(path);
return NULL;
}
i = 0;
relaPhndx = 0;
while (i < ehdr->e_phnum) {
if (fread(&segs[i].phdr, sizeof(segs[i].phdr), 1, fp) <= 0) {
if (feof(fp)) {
fprintf(stderr, "%s: Unexpected EOF\n", path);
errno = EILSEQ;
} else
perror(path);
free(segs);
return NULL;
}
switch (segs[i].phdr.p_type) {
case PT_ARM_EXIDX:
ehdr->e_phnum--;
break;
case 0x60000000:
relaPhndx = i;
default:
segs[i].shnum = 0;
i++;
}
}
if (relaPhndx == 0) {
fprintf(stderr, "%s: PT_PSP2_RELA not found\n", path);
errno = EILSEQ;
free(segs);
return NULL;
}
*rela = segs + relaPhndx;
mapOverScnSeg(segCntScns, scns, segs, ehdr, relaPhndx, relMark);
for (i = 0; i < ehdr->e_phnum; i++) {
segs[i].scns = malloc(segs[i].shnum * sizeof(scn_t));
if (segs[i].scns == NULL) {
perror(NULL);
while (i) {
i--;
free(segs[i].scns);
}
free(segs);
return NULL;
}
segs[i].shnum = 0;
}
mapOverScnSeg(segCntMapScns, scns, segs, ehdr, relaPhndx, relMark);
for (i = 0; i < ehdr->e_phnum; i++) {
if (segs[i].phdr.p_type != PT_LOAD)
continue;
for (j = 1; j < segs[i].shnum; j++) {
tmp = segs[i].scns[j];
if (segs[i].scns[j - 1]->shdr.sh_addr > tmp->shdr.sh_addr) {
k = j;
do {
segs[i].scns[k] = segs[i].scns[k - 1];
k--;
} while (k > 0 &&
segs[i].scns[k - 1]->shdr.sh_addr > tmp->shdr.sh_addr);
segs[i].scns[k] = tmp;
}
}
}
return segs;
}
