objc4-551.1.tar.gz

[apple/objc4.git] / runtime / objc-file-old.mm

diff --git a/runtime/objc-file-old.mm b/runtime/objc-file-old.mm
new file mode 100644 (file)
index 0000000..e047eed
--- /dev/null
+++ b/runtime/objc-file-old.mm
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 1999-2007 Apple Inc.  All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+// Copyright 1988-1996 NeXT Software, Inc.
+
+#if !__OBJC2__
+
+#include "objc-private.h"
+#include "objc-runtime-old.h"
+#include "objc-file-old.h"
+
+#if TARGET_OS_WIN32
+
+/*
+Module 
+_getObjcModules(const header_info *hi, size_t *nmodules)
+{
+    if (nmodules) *nmodules = hi->moduleCount;
+    return hi->modules;
+}
+*/
+SEL *
+_getObjcSelectorRefs(const header_info *hi, size_t *nmess)
+{
+    if (nmess) *nmess = hi->selrefCount;
+    return hi->selrefs;
+}
+
+struct old_protocol **
+_getObjcProtocols(const header_info *hi, size_t *nprotos)
+{
+    if (nprotos) *nprotos = hi->protocolCount;
+    return hi->protocols;
+}
+
+Class*
+_getObjcClassRefs(const header_info *hi, size_t *nclasses)
+{
+    if (nclasses) *nclasses = hi->clsrefCount;
+    return (Class*)hi->clsrefs;
+}
+
+// __OBJC,__class_names section only emitted by CodeWarrior  rdar://4951638
+const char *
+_getObjcClassNames(const header_info *hi, size_t *size)
+{
+    if (size) *size = 0;
+    return NULL;
+}
+
+#else
+
+#define GETSECT(name, type, sectname)                                   \
+    type *name(const header_info *hi, size_t *outCount)  \
+    {                                                                   \
+        unsigned long byteCount = 0;                                    \
+        type *data = (type *)                                           \
+            getsectiondata(hi->mhdr, SEG_OBJC, sectname, &byteCount);   \
+        *outCount = byteCount / sizeof(type);                           \
+        return data;                                                    \
+    }
+
+GETSECT(_getObjcModules,      struct objc_module, "__module_info");
+GETSECT(_getObjcSelectorRefs, SEL,                "__message_refs");
+GETSECT(_getObjcClassRefs,    Class, "__cls_refs");
+GETSECT(_getObjcClassNames,   const char,         "__class_names");
+// __OBJC,__class_names section only emitted by CodeWarrior  rdar://4951638
+
+
+objc_image_info *
+_getObjcImageInfo(const headerType *mhdr, size_t *outBytes)
+{
+    unsigned long byteCount = 0;
+    objc_image_info *info = (objc_image_info *)
+        getsectiondata(mhdr, SEG_OBJC, "__image_info", &byteCount);
+    *outBytes = byteCount;
+    return info;
+}
+
+
+struct old_protocol **
+_getObjcProtocols(const header_info *hi, size_t *nprotos)
+{
+    unsigned long size = 0;
+    struct old_protocol *protos = (struct old_protocol *)
+        getsectiondata(hi->mhdr, SEG_OBJC, "__protocol", &size);
+    *nprotos = size / sizeof(struct old_protocol);
+    
+    if (!hi->proto_refs  &&  *nprotos) {
+        size_t i;
+        header_info *whi = (header_info *)hi;
+        whi->proto_refs = (struct old_protocol **)
+            malloc(*nprotos * sizeof(*hi->proto_refs));
+        for (i = 0; i < *nprotos; i++) {
+            hi->proto_refs[i] = protos+i;
+        }
+    }
+    
+    return hi->proto_refs;
+}
+
+
+static const segmentType *
+getsegbynamefromheader(const headerType *head, const char *segname)
+{
+    const segmentType *sgp;
+    unsigned long i;
+    
+    sgp = (const segmentType *) (head + 1);
+    for (i = 0; i < head->ncmds; i++){
+        if (sgp->cmd == SEGMENT_CMD) {
+            if (strncmp(sgp->segname, segname, sizeof(sgp->segname)) == 0) {
+                return sgp;
+            }
+        }
+        sgp = (const segmentType *)((char *)sgp + sgp->cmdsize);
+    }
+    return NULL;
+}
+
+BOOL
+_hasObjcContents(const header_info *hi)
+{
+    // Look for an __OBJC,* section other than __OBJC,__image_info
+    const segmentType *seg = getsegbynamefromheader(hi->mhdr, "__OBJC");
+    const sectionType *sect;
+    uint32_t i;
+    for (i = 0; i < seg->nsects; i++) {
+        sect = ((const sectionType *)(seg+1))+i;
+        if (0 != strncmp(sect->sectname, "__image_info", 12)) {
+            return YES;
+        }
+    }
+
+    return NO;
+}
+
+
+#endif
+
+#endif