summaryrefslogtreecommitdiffhomepage
path: root/src/arbits/slbt_armap_sysv_32.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/arbits/slbt_armap_sysv_32.c')
-rw-r--r--src/arbits/slbt_armap_sysv_32.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/src/arbits/slbt_armap_sysv_32.c b/src/arbits/slbt_armap_sysv_32.c
new file mode 100644
index 0000000..12840ef
--- /dev/null
+++ b/src/arbits/slbt_armap_sysv_32.c
@@ -0,0 +1,119 @@
+/*******************************************************************/
+/* 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_sysv_32(
+ const struct slbt_driver_ctx * dctx,
+ struct slbt_archive_meta_impl * m)
+{
+ struct ar_raw_armap_sysv_32 * armap;
+ struct ar_meta_member_info * memberp;
+ struct ar_meta_armap_common_32 *armapref;
+ struct ar_meta_armap_ref_32 * symrefs;
+ uint32_t idx;
+ uint32_t uref;
+ uint32_t nsyms;
+ uint32_t nstrs;
+ const char * ch;
+ const char * cap;
+ unsigned char * uch;
+ unsigned char (*mark)[0x04];
+
+ armap = &m->armaps.armap_sysv_32;
+ memberp = m->memberv[0];
+
+ mark = memberp->ar_object_data;
+
+ armap->ar_num_of_syms = mark;
+ uch = *mark++;
+
+ armap->ar_first_ref_offset = mark;
+
+ nsyms = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
+ mark += nsyms;
+
+ if (memberp->ar_object_size < (sizeof(*mark) + (nsyms * sizeof(*mark))))
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_AR_INVALID_ARMAP_NUMBER_OF_SYMS);
+
+ m->symstrs = (const char *)mark;
+
+ cap = memberp->ar_object_data;
+ cap += memberp->ar_object_size;
+
+ 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++;
+ }
+
+ if (nstrs != nsyms)
+ return SLBT_CUSTOM_ERROR(
+ dctx,
+ SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE);
+
+ if (cap[-1])
+ 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_32 = calloc(nsyms + 1,sizeof(*symrefs))))
+ return SLBT_SYSTEM_ERROR(dctx,0);
+
+ mark = armap->ar_first_ref_offset;
+ symrefs = m->armaps.armap_symrefs_32;
+
+ for (idx=0,uch=*mark; idx<nsyms; idx++,uch=*++mark) {
+ uref = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
+ symrefs[idx].ar_member_offset = uref;
+ }
+
+ armap->ar_string_table = m->symstrv;
+
+ armapref = &m->armaps.armap_common_32;
+ armapref->ar_member = memberp;
+ armapref->ar_symrefs = symrefs;
+ armapref->ar_armap_sysv = armap;
+ armapref->ar_armap_attr = AR_ARMAP_ATTR_SYSV | AR_ARMAP_ATTR_BE_32;
+ armapref->ar_num_of_symbols = nsyms;
+ armapref->ar_size_of_refs = nsyms * sizeof(*mark);
+ armapref->ar_size_of_strs = cap - m->symstrs;
+ armapref->ar_string_table = m->symstrs;
+
+ m->armaps.armap_nsyms = nsyms;
+
+ m->armeta.a_armap_primary.ar_armap_common_32 = armapref;
+
+ return 0;
+}