slbt_ar_parse_primary_armap_bsd_32(): move to own translation unit.

1 files changed, 147 insertions, 0 deletions

diff --git a/src/arbits/slbt_armap_bsd_32.c b/src/arbits/slbt_armap_bsd_32.c
new file mode 100644
index 0000000..ed236b6
--- /dev/null
+++ b/src/arbits/slbt_armap_bsd_32.c
@@ -0,0 +1,147 @@
+/*******************************************************************/
+/*  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_32(
+	const struct slbt_driver_ctx *  dctx,
+	struct slbt_archive_meta_impl * m)
+
+{
+	struct ar_raw_armap_bsd_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                        attr;
+	uint32_t                        nsyms;
+	uint32_t                        nstrs;
+	uint32_t                        sizeofrefs_le;
+	uint32_t                        sizeofrefs_be;
+	uint32_t                        sizeofrefs;
+	uint32_t                        sizeofstrs;
+	const char *                    ch;
+	const char *                    cap;
+	unsigned char *                 uch;
+	unsigned char                   (*mark)[0x04];
+
+	armap   = &m->armaps.armap_bsd_32;
+	memberp = m->memberv[0];
+
+	mark = memberp->ar_object_data;
+
+	armap->ar_size_of_refs = mark;
+	uch = *mark++;
+
+	armap->ar_first_name_offset = mark;
+
+	sizeofrefs_le = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
+	sizeofrefs_be = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
+
+	if (sizeofrefs_le < memberp->ar_object_size - sizeof(*mark)) {
+		sizeofrefs = sizeofrefs_le;
+		attr       = AR_ARMAP_ATTR_LE_32;
+
+	} else if (sizeofrefs_be < memberp->ar_object_size - sizeof(*mark)) {
+		sizeofrefs = sizeofrefs_be;
+		attr       = AR_ARMAP_ATTR_BE_32;
+	} else {
+		return SLBT_CUSTOM_ERROR(
+			dctx,
+			SLBT_ERR_AR_INVALID_ARMAP_SIZE_OF_REFS);
+	}
+
+	nsyms  = sizeofrefs / sizeof(struct ar_raw_armap_ref_32);
+	mark  += (sizeofrefs / sizeof(*mark));
+
+	armap->ar_size_of_strs = mark;
+	uch = *mark++;
+
+	sizeofstrs = (attr == AR_ARMAP_ATTR_LE_32)
+		? (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0]
+		: (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
+
+	if (sizeofstrs > memberp->ar_object_size - 2*sizeof(*mark) - sizeofrefs)
+		return SLBT_CUSTOM_ERROR(
+			dctx,
+			SLBT_ERR_AR_INVALID_ARMAP_SIZE_OF_STRS);
+
+	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_32 = calloc(nsyms + 1,sizeof(*symrefs))))
+		return SLBT_SYSTEM_ERROR(dctx,0);
+
+	mark    = armap->ar_first_name_offset;
+	symrefs = m->armaps.armap_symrefs_32;
+
+	for (idx=0,uch=*++mark; idx<nsyms; idx++,uch=*++mark) {
+		uref = (attr == AR_ARMAP_ATTR_BE_32)
+			? (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3]
+			: (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
+
+		symrefs[idx].ar_member_offset = uref;
+		mark++;
+	}
+
+	armap->ar_string_table = m->symstrv;
+
+	armapref = &m->armaps.armap_common_32;
+	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_32 = armapref;
+
+	return 0;
+}