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-/*
- * Copyright (c) 2004, 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@
- */
-
-#include <TargetConditionals.h>
-
-#if __i386__ && !TARGET_OS_IPHONE && !TARGET_OS_WIN32
-
-/*
- This file defines the non-GC variants of objc_assign_* on a dedicated
- page in the (__DATA,__data) section. At load time under GC, each
- routine is overwritten with a jump to its GC variant. It is necessary
- for these routines to exist on a dedicated page for vm_protect to
- work properly in the GC case. The page exists in the data segment to
- reduce the kernel's page table overhead.
-
- Note: To avoid wasting more space than necessary at runtime, this file
- must not contain anything other than the objc_assign_* routines.
-*/
-
-.section __IMPORT, __objctext, regular, pure_instructions + self_modifying_code
-
-.align 12 // align to page boundary
-
-// id objc_assign_ivar(id value, id dest, ptrdiff_t offset);
-.globl _objc_assign_ivar
-_objc_assign_ivar:
- pushl %ebp
- movl %esp,%ebp
- movl 0x08(%ebp),%eax // value
- movl 0x0c(%ebp),%ecx // dest
- movl 0x10(%ebp),%edx // offset
- movl %eax,(%ecx,%edx) // return (*(dest + offset) = value);
- leave
- ret
-
-// id objc_assign_global(id value, id *dest);
-.globl _objc_assign_global
-_objc_assign_global:
- pushl %ebp
- movl %esp,%ebp
- movl 0x08(%ebp),%eax // value
- movl 0x0c(%ebp),%edx // dest
- movl %eax,(%edx) // return (*dest = value);
- leave
- ret
-
-// id objc_assign_threadlocal(id value, id *dest);
-.globl _objc_assign_threadlocal
-_objc_assign_threadlocal:
- pushl %ebp
- movl %esp,%ebp
- movl 0x08(%ebp),%eax // value
- movl 0x0c(%ebp),%edx // dest
- movl %eax,(%edx) // return (*dest = value);
- leave
- ret
-
-// As of OS X 10.5, objc_assign_strongCast_non_gc is identical to
-// objc_assign_global_non_gc.
-
-// id objc_assign_strongCast(id value, id *dest);
-.globl _objc_assign_strongCast
-_objc_assign_strongCast:
- pushl %ebp
- movl %esp,%ebp
- movl 0x08(%ebp),%eax // value
- movl 0x0c(%ebp),%edx // dest
- movl %eax,(%edx) // return (*dest = value);
- leave
- ret
-
-// Claim the remainder of the page.
-.align 12, 0
-
-#endif
+++ /dev/null
-/*
- * Copyright (c) 2006-2007 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@
- */
-
-#error not currently used
-
-#ifdef __x86_64__
-
-/*
- This file defines the non-GC variants of objc_assign_* on a dedicated
- page in the (__DATA,__data) section. At load time under GC, each
- routine is overwritten with a jump to its GC variant. It is necessary
- for these routines to exist on a dedicated page for vm_protect to
- work properly in the GC case. The page exists in the data segment to
- reduce the kernel's page table overhead.
-
- Note: To avoid wasting more space than necessary at runtime, this file
- must not contain anything other than the objc_assign_* routines.
-*/
-
-.data
-.align 12 // align to page boundary
-
-// id objc_assign_ivar(id value, id dest, ptrdiff_t offset);
-.globl _objc_assign_ivar
-_objc_assign_ivar:
- pushq %rbp
- movq %rsp,%rbp
- movq %rdi,(%rsi,%rdx) // *(dest + offset) = value);
- movq %rdi,%rax // return value;
- leave
- ret
-
-// id objc_assign_global(id value, id *dest);
-.globl _objc_assign_global
-_objc_assign_global:
- pushq %rbp
- movq %rsp,%rbp
- movq %rdi,(%rsi) // *(dest = value);
- movq %rdi,%rax // return value;
- leave
- ret
-
-// id objc_assign_threadlocal(id value, id *dest);
-.globl _objc_assign_threadlocal
-_objc_assign_threadlocal:
- pushq %rbp
- movq %rsp,%rbp
- movq %rdi,(%rsi) // *(dest = value);
- movq %rdi,%rax // return value;
- leave
- ret
-
-// As of OS X 10.5, objc_assign_strongCast_non_gc is identical to
-// objc_assign_global_non_gc.
-
-// id objc_assign_strongCast(id value, id *dest);
-.globl _objc_assign_strongCast
-_objc_assign_strongCast:
- pushq %rbp
- movq %rsp,%rbp
- movq %rdi,(%rsi) // *(dest = value);
- movq %rdi,%rax // return value;
- leave
- ret
-
-// Claim the remainder of the page.
-.align 12, 0
-
-#endif
* Called by pretty much all GC-supporting code.
**********************************************************************/
-
-#if defined(__i386__)
-
-// These 3 functions are defined in objc-auto-i386.s as
-// the non-GC variants. Under GC, rtp_init stomps them with jumps to
-// objc_assign_*_gc.
-
-#else
-
-// use generic implementation until time can be spent on optimizations
id objc_assign_strongCast(id value, id *dest)
{
if (UseGC) {
}
}
-// not defined(__i386__)
-#endif
-
#if __LP64__
#define LC_SEGMENT_COMMAND LC_SEGMENT_64
#define LC_ROUTINES_COMMAND LC_ROUTINES_64
verify_gc_readiness(wantsGC, &wantsCompaction, hList, hCount);
gc_init(wantsGC, wantsCompaction); // needs executable for GC decision
- rtp_init(); // needs GC decision first
} else {
verify_gc_readiness(wantsGC, &wantsCompaction, hList, hCount);
}
Method _protocol_getMethod(Protocol *p, SEL sel, BOOL isRequiredMethod, BOOL isInstanceMethod, BOOL recursive);
#endif
-/* GC and RTP startup */
+/* GC startup */
extern void gc_init(BOOL wantsGC, BOOL wantsCompaction);
extern void gc_init2(void);
-extern void rtp_init(void);
/* Exceptions */
struct alt_handler_list;
ENV(PrintVtables); // env OBJC_PRINT_VTABLE_SETUP
ENV(PrintVtableImages); // env OBJC_PRINT_VTABLE_IMAGES
ENV(PrintFuture); // env OBJC_PRINT_FUTURE_CLASSES
-ENV(PrintRTP); // env OBJC_PRINT_RTP
ENV(PrintGC); // env OBJC_PRINT_GC
ENV(PrintPreopt); // env OBJC_PRINT_PREOPTIMIZATION
ENV(PrintCxxCtors); // env OBJC_PRINT_CXX_CTORS
+++ /dev/null
-/*
- * Copyright (c) 2004-2007 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@
- */
-
-#include "objc-private.h"
-#include <objc/message.h>
-
-
-#if defined(__i386__)
-
-
-/**********************************************************************
-* rtp_swap_imp
-*
-* Swap a function's current implementation with a new one.
-* The routine at 'address' is assumed to be at least as large as the
-* jump instruction required to reach the new implementation.
-**********************************************************************/
-static void rtp_swap_imp(unsigned *address, void *code, const char *name)
-{
- if (vm_protect(mach_task_self(), (vm_address_t)address, 1,
- FALSE, VM_PROT_READ | VM_PROT_WRITE) != KERN_SUCCESS)
- _objc_fatal("Could not get write access to %s.", name);
- else
- {
- objc_write_branch(address, (unsigned*)code);
-
- if (vm_protect(mach_task_self(), (vm_address_t)address, 1,
- FALSE, VM_PROT_READ | VM_PROT_EXECUTE) != KERN_SUCCESS)
- _objc_fatal("Could not reprotect %s.", name);
- }
-}
-
-
-void rtp_init(void)
-{
- // At load time, the page on which the objc_assign_* routines live is not
- // marked as executable. We fix that here, regardless of the GC choice.
-#if SUPPORT_GC
- if (UseGC)
- {
- rtp_swap_imp((unsigned*)objc_assign_ivar,
- (void*)objc_assign_ivar_gc, "objc_assign_ivar");
- rtp_swap_imp((unsigned*)objc_assign_global,
- (void*)objc_assign_global_gc, "objc_assign_global");
- rtp_swap_imp((unsigned*)objc_assign_threadlocal,
- (void*)objc_assign_threadlocal_gc, "objc_assign_threadlocal");
- rtp_swap_imp((unsigned*)objc_assign_strongCast,
- (void*)objc_assign_strongCast_gc, "objc_assign_strongCast");
- }
- else
-#endif
- { // Not GC, just make the page executable.
- if (vm_protect(mach_task_self(), (vm_address_t)objc_assign_ivar, 1,
- FALSE, VM_PROT_READ | VM_PROT_EXECUTE) != KERN_SUCCESS)
- _objc_fatal("Could not reprotect objc_assign_*.");
- }
-}
-
-
-#else
-
-
-void rtp_init(void)
-{
- if (PrintRTP) {
- _objc_inform("RTP: no rtp implementation for this platform");
- }
-}
-
-
-#endif
-
int PrintVtables = -1; // env OBJC_PRINT_VTABLE_SETUP
int PrintVtableImages = -1;//env OBJC_PRINT_VTABLE_IMAGES
int PrintFuture = -1; // env OBJC_PRINT_FUTURE_CLASSES
-int PrintRTP = -1; // env OBJC_PRINT_RTP
int PrintGC = -1; // env OBJC_PRINT_GC
int PrintPreopt = -1; // env OBJC_PRINT_PREOPTIMIZATION
int PrintCxxCtors = -1; // env OBJC_PRINT_CXX_CTORS
"log processing of method caches");
OPTION(PrintFuture, OBJC_PRINT_FUTURE_CLASSES,
"log use of future classes for toll-free bridging");
- OPTION(PrintRTP, OBJC_PRINT_RTP,
- "log initialization of the Objective-C runtime pages");
OPTION(PrintGC, OBJC_PRINT_GC,
"log some GC operations");
OPTION(PrintPreopt, OBJC_PRINT_PREOPTIMIZATION,
projects / apple / objc4.git / commitdiff
