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/*******************************************************************/
/* slibtool: a skinny libtool implementation, written in C */
/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <slibtool/slibtool.h>
#include <slibtool/slibtool_arbits.h>
#include "slibtool_ar_impl.h"
#include "slibtool_driver_impl.h"
#include "slibtool_errinfo_impl.h"
int slbt_ar_parse_primary_armap_bsd_64(
const struct slbt_driver_ctx * dctx,
struct slbt_archive_meta_impl * m)
{
struct ar_raw_armap_bsd_64 * armap;
struct ar_meta_member_info * memberp;
struct ar_meta_armap_common_64 *armapref;
struct ar_meta_armap_ref_64 * symrefs;
uint64_t idx;
uint64_t uref_hi;
uint64_t uref_lo;
uint32_t attr;
uint64_t u64_lo;
uint64_t u64_hi;
uint64_t nsyms;
uint64_t nstrs;
uint64_t sizeofrefs_le;
uint64_t sizeofrefs_be;
uint64_t sizeofrefs;
uint64_t sizeofstrs;
const char * ch;
const char * cap;
unsigned char * uch;
unsigned char (*mark)[0x08];
armap = &m->armaps.armap_bsd_64;
memberp = m->memberv[0];
mark = memberp->ar_object_data;
armap->ar_size_of_refs = mark;
uch = *mark++;
armap->ar_first_name_offset = mark;
u64_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
u64_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
sizeofrefs_le = u64_lo + (u64_hi << 32);
u64_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
u64_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
sizeofrefs_be = (u64_hi << 32) + u64_lo;
if (sizeofrefs_le < memberp->ar_object_size - sizeof(*mark)) {
sizeofrefs = sizeofrefs_le;
attr = AR_ARMAP_ATTR_LE_64;
} else if (sizeofrefs_be < memberp->ar_object_size - sizeof(*mark)) {
sizeofrefs = sizeofrefs_be;
attr = AR_ARMAP_ATTR_BE_64;
} else {
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_SIZE_OF_REFS);
}
nsyms = sizeofrefs / sizeof(struct ar_raw_armap_ref_64);
mark += (sizeofrefs / sizeof(*mark));
armap->ar_size_of_strs = mark;
uch = *mark++;
if (attr == AR_ARMAP_ATTR_LE_64) {
u64_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
u64_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
} else {
u64_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
u64_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
}
sizeofstrs = u64_lo + (u64_hi << 32);
m->symstrs = (const char *)mark;
cap = m->symstrs;
cap += sizeofstrs;
if ((cap == m->symstrs) && nsyms)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (nsyms && !m->symstrs[0])
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
for (ch=&m->symstrs[1],nstrs=0; ch<cap; ch++) {
if (!ch[0] && !ch[-1] && (nstrs < nsyms))
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (!ch[0] && ch[-1] && (nstrs < nsyms))
nstrs++;
}
if (nstrs != nsyms)
return SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (!(m->symstrv = calloc(nsyms + 1,sizeof(const char *))))
return SLBT_SYSTEM_ERROR(dctx,0);
if (!(m->armaps.armap_symrefs_64 = calloc(nsyms + 1,sizeof(*symrefs))))
return SLBT_SYSTEM_ERROR(dctx,0);
mark = armap->ar_first_name_offset;
symrefs = m->armaps.armap_symrefs_64;
for (idx=0; idx<nsyms; idx++) {
uch = *mark++;
if (attr == AR_ARMAP_ATTR_BE_64) {
uref_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
uref_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
} else {
uref_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
uref_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
}
symrefs[idx].ar_name_offset = (uref_hi << 32) + uref_lo;
uch = *mark++;
if (attr == AR_ARMAP_ATTR_BE_64) {
uref_hi = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
uref_lo = (uch[4] << 24) + (uch[5] << 16) + (uch[6] << 8) + uch[7];
} else {
uref_lo = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
uref_hi = (uch[7] << 24) + (uch[6] << 16) + (uch[5] << 8) + uch[4];
}
symrefs[idx].ar_member_offset = (uref_hi << 32) + uref_lo;
}
armap->ar_string_table = m->symstrv;
armapref = &m->armaps.armap_common_64;
armapref->ar_member = memberp;
armapref->ar_symrefs = symrefs;
armapref->ar_armap_bsd = armap;
armapref->ar_armap_attr = AR_ARMAP_ATTR_BSD | attr;
armapref->ar_num_of_symbols = nsyms;
armapref->ar_size_of_refs = sizeofrefs;
armapref->ar_size_of_strs = sizeofstrs;
armapref->ar_string_table = m->symstrs;
m->armaps.armap_nsyms = nsyms;
m->armeta.a_armap_primary.ar_armap_common_64 = armapref;
return 0;
}
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