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/*
* Copyright (c) 2008-2025 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#import "OFArray.h"
#import "OFXMLAttribute.h"
#import "LinkLibGenerator.h"
#import "OFInvalidFormatException.h"
#import "OFUnsupportedVersionException.h"
#import "copyright.h"
@implementation LinkLibGenerator
- (instancetype)initWithLibrary: (OFXMLElement *)library
implementation: (OFStream *)impl
{
self = [super init];
@try {
OFXMLAttribute *version;
if (![library.name isEqual: @"amiga-library"] ||
library.namespace != nil)
@throw [OFInvalidFormatException exception];
if ((version = [library attributeForName: @"version"]) == nil)
@throw [OFInvalidFormatException exception];
if (![version.stringValue isEqual: @"1.0"])
@throw [OFUnsupportedVersionException
exceptionWithVersion: version.stringValue];
_library = objc_retain(library);
_impl = objc_retain(impl);
} @catch (id e) {
objc_release(self);
@throw e;
}
return self;
}
- (void)dealloc
{
objc_release(_library);
objc_release(_impl);
[super dealloc];
}
- (void)generate
{
OFString *libBase = [_library attributeForName: @"base"].stringValue;
OFArray OF_GENERIC(OFXMLElement *) *functions;
size_t funcIndex = 0;
[_impl writeString: COPYRIGHT];
[_impl writeString:
@"/* This file is automatically generated from amiga-library.xml */"
@"\n\n"
@"#include \"config.h\"\n"
@"\n"];
for (OFXMLElement *include in [_library elementsForName: @"include"])
[_impl writeFormat: @"#import \"%@\"\n",
include.stringValue];
[_impl writeFormat: @"\n"
@"extern struct Library *%@;\n"
@"\n",
libBase];
[_impl writeString:
@"#if OF_GCC_VERSION >= 1100\n"
@"# pragma GCC diagnostic ignored \"-Warray-parameter\"\n"
@"#endif\n"
@"\n"];
functions = [_library elementsForName: @"function"];
for (OFXMLElement *function in functions) {
OFString *name =
[function attributeForName: @"name"].stringValue;
OFString *returnType =
[function attributeForName: @"return-type"].stringValue;
OFArray OF_GENERIC(OFXMLElement *) *arguments =
[function elementsForName: @"argument"];
size_t argumentIndex;
if (returnType == nil)
returnType = @"void";
[_impl writeFormat: @"%@ __attribute__((__weak__))\n"
@"%@(", returnType, name];
argumentIndex = 0;
for (OFXMLElement *argument in
[function elementsForName: @"argument"]) {
OFString *argName =
[argument attributeForName: @"name"].stringValue;
OFString *argType =
[argument attributeForName: @"type"].stringValue;
if (argumentIndex++ > 0)
[_impl writeString: @", "];
[_impl writeString: argType];
if (![argType hasSuffix: @"*"])
[_impl writeString: @" "];
[_impl writeString: argName];
}
[_impl writeFormat: @")\n"
@"{\n"
@"\t__asm__ __volatile__ (\n"
@"\t \"mr\t\t%%%%r12, %%0\"\n"
@"\t :: \"r\" (%@) : \"r12\"\n"
@"\t);\n"
@"\n"
@"\t",
libBase, libBase];
if (![returnType isEqual: @"void"])
[_impl writeString: @"return "];
[_impl writeString: @"__extension__ (("];
[_impl writeString: returnType];
if (![returnType hasSuffix: @"*"])
[_impl writeString: @" "];
[_impl writeString: @"(*)("];
argumentIndex = 0;
for (OFXMLElement *argument in arguments) {
OFString *argType =
[argument attributeForName: @"type"].stringValue;
if (argumentIndex++ > 0)
[_impl writeString: @", "];
[_impl writeString: argType];
}
[_impl writeFormat: @"))*(void **)(((uintptr_t)%@) - %zu))(",
libBase, 28 + funcIndex * 6];
argumentIndex = 0;
for (OFXMLElement *argument in
[function elementsForName: @"argument"]) {
OFString *argName =
[argument attributeForName: @"name"].stringValue;
if (argumentIndex++ > 0)
[_impl writeString: @", "];
[_impl writeString: argName];
}
[_impl writeString: @");\n"];
if ([function attributeForName: @"noreturn"] != nil)
[_impl writeString: @"\n\tOF_UNREACHABLE\n"];
[_impl writeString: @"}\n"];
if (++funcIndex < functions.count)
[_impl writeString: @"\n"];
}
}
@end
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