Source/JavaScriptCore/jit/JITStubsARM64.h - WebKit - Git at Google

 /*
  * Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
  *     its contributors may be used to endorse or promote products derived
  *     from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #ifndef JITStubsARM64_h
 #define JITStubsARM64_h

 #if !CPU(ARM64)
 #error "JITStubsARM64.h should only be #included if CPU(ARM64)"
 #endif

 #if !USE(JSVALUE64)
 #error "JITStubsARM64.h only implements USE(JSVALUE64)"
 #endif

 namespace JSC {

 #if COMPILER(GCC)

 #define THUNK_RETURN_ADDRESS_OFFSET      0x30
 #define PRESERVED_RETURN_ADDRESS_OFFSET  0x38
 #define PRESERVED_X19_OFFSET             0x40
 #define PRESERVED_X20_OFFSET             0x48
 #define PRESERVED_X21_OFFSET             0x50
 #define PRESERVED_X22_OFFSET             0x58
 #define PRESERVED_X23_OFFSET             0x60
 #define PRESERVED_X24_OFFSET             0x68
 #define PRESERVED_X25_OFFSET             0x70
 #define PRESERVED_X26_OFFSET             0x78
 #define PRESERVED_X27_OFFSET             0x80
 #define PRESERVED_X28_OFFSET             0x88
 #define REGISTER_FILE_OFFSET             0x90
 #define CALLFRAME_OFFSET                 0x98
 #define PROFILER_REFERENCE_OFFSET        0xa0
 #define VM_OFFSET                        0xa8
 #define SIZEOF_JITSTACKFRAME             0xb0

 asm (
 ".section __TEXT,__text,regular,pure_instructions" "\n"
 ".globl " SYMBOL_STRING(ctiTrampoline) "\n"
 ".align 2" "\n"
 HIDE_SYMBOL(ctiTrampoline) "\n"
 SYMBOL_STRING(ctiTrampoline) ":" "\n"
     "sub sp, sp, #" STRINGIZE_VALUE_OF(SIZEOF_JITSTACKFRAME) "\n"
     "str lr, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "]" "\n"
     "str x19, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X19_OFFSET) "]" "\n"
     "str x20, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X20_OFFSET) "]" "\n"
     "str x21, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X21_OFFSET) "]" "\n"
     "str x22, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X22_OFFSET) "]" "\n"
     "str x23, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X23_OFFSET) "]" "\n"
     "str x24, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X24_OFFSET) "]" "\n"
     "str x25, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X25_OFFSET) "]" "\n"
     "str x26, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X26_OFFSET) "]" "\n"
     "str x27, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X27_OFFSET) "]" "\n"
     "str x28, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X28_OFFSET) "]" "\n"
     "str x1, [sp, #" STRINGIZE_VALUE_OF(REGISTER_FILE_OFFSET) "]" "\n"
     "str x2, [sp, #" STRINGIZE_VALUE_OF(CALLFRAME_OFFSET) "]" "\n"
     "str x4, [sp, #" STRINGIZE_VALUE_OF(PROFILER_REFERENCE_OFFSET) "]" "\n"
     "str x5, [sp, #" STRINGIZE_VALUE_OF(VM_OFFSET) "]" "\n"
     "mov x25, x2" "\n" // callFrameRegister = ARM64Registers::x25
     "mov x26, #512" "\n" // timeoutCheckRegister = ARM64Registers::x26
     "mov x27, #0xFFFF000000000000" "\n" // tagTypeNumberRegister = ARM64Registers::x27
     "add x28, x27, #2" "\n" // ( #0xFFFF000000000002 ) tagMaskRegister = ARM64Registers::x28
     "blr x0" "\n"
     "ldr x28, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X28_OFFSET) "]" "\n"
     "ldr x27, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X27_OFFSET) "]" "\n"
     "ldr x26, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X26_OFFSET) "]" "\n"
     "ldr x25, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X25_OFFSET) "]" "\n"
     "ldr x24, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X24_OFFSET) "]" "\n"
     "ldr x23, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X23_OFFSET) "]" "\n"
     "ldr x22, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X22_OFFSET) "]" "\n"
     "ldr x21, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X21_OFFSET) "]" "\n"
     "ldr x20, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X20_OFFSET) "]" "\n"
     "ldr x19, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X19_OFFSET) "]" "\n"
     "ldr lr, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "]" "\n"
     "add sp, sp, #" STRINGIZE_VALUE_OF(SIZEOF_JITSTACKFRAME) "\n"
     "ret" "\n"

 HIDE_SYMBOL(ctiOpThrowNotCaught) "\n"
 SYMBOL_STRING(ctiOpThrowNotCaught) ":" "\n"
     "ldr x28, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X28_OFFSET) "]" "\n"
     "ldr x27, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X27_OFFSET) "]" "\n"
     "ldr x26, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X26_OFFSET) "]" "\n"
     "ldr x25, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X25_OFFSET) "]" "\n"
     "ldr x24, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X24_OFFSET) "]" "\n"
     "ldr x23, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X23_OFFSET) "]" "\n"
     "ldr x22, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X22_OFFSET) "]" "\n"
     "ldr x21, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X21_OFFSET) "]" "\n"
     "ldr x20, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X20_OFFSET) "]" "\n"
     "ldr x19, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X19_OFFSET) "]" "\n"
     "ldr lr, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "]" "\n"
     "add sp, sp, #" STRINGIZE_VALUE_OF(SIZEOF_JITSTACKFRAME) "\n"
     "ret" "\n"
 );

 #define DEFINE_STUB_FUNCTION(rtype, op) \
     extern "C" { \
         rtype JITStubThunked_##op(STUB_ARGS_DECLARATION); \
     }; \
     asm ( \
         ".section __TEXT,__text,regular,pure_instructions" "\n" \
         ".globl " SYMBOL_STRING(cti_##op) "\n" \
         ".align 2" "\n" \
         HIDE_SYMBOL(cti_##op) "\n"             \
         SYMBOL_STRING(cti_##op) ":" "\n" \
         "str lr, [sp, #" STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "]" "\n" \
         "bl " SYMBOL_STRING(JITStubThunked_##op) "\n" \
         "ldr lr, [sp, #" STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "]" "\n" \
         "ret" "\n" \
         ); \
     rtype JITStubThunked_##op(STUB_ARGS_DECLARATION) \

 #endif // COMPILER(GCC)

 } // namespace JSC

 #endif // JITStubsARM64_h
	/*
	* Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
	* its contributors may be used to endorse or promote products derived
	* from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#ifndef JITStubsARM64_h
	#define JITStubsARM64_h

	#if !CPU(ARM64)
	#error "JITStubsARM64.h should only be #included if CPU(ARM64)"
	#endif

	#if !USE(JSVALUE64)
	#error "JITStubsARM64.h only implements USE(JSVALUE64)"
	#endif

	namespace JSC {

	#if COMPILER(GCC)

	#define THUNK_RETURN_ADDRESS_OFFSET 0x30
	#define PRESERVED_RETURN_ADDRESS_OFFSET 0x38
	#define PRESERVED_X19_OFFSET 0x40
	#define PRESERVED_X20_OFFSET 0x48
	#define PRESERVED_X21_OFFSET 0x50
	#define PRESERVED_X22_OFFSET 0x58
	#define PRESERVED_X23_OFFSET 0x60
	#define PRESERVED_X24_OFFSET 0x68
	#define PRESERVED_X25_OFFSET 0x70
	#define PRESERVED_X26_OFFSET 0x78
	#define PRESERVED_X27_OFFSET 0x80
	#define PRESERVED_X28_OFFSET 0x88
	#define REGISTER_FILE_OFFSET 0x90
	#define CALLFRAME_OFFSET 0x98
	#define PROFILER_REFERENCE_OFFSET 0xa0
	#define VM_OFFSET 0xa8
	#define SIZEOF_JITSTACKFRAME 0xb0

	asm (
	".section __TEXT,__text,regular,pure_instructions" "\n"
	".globl " SYMBOL_STRING(ctiTrampoline) "\n"
	".align 2" "\n"
	HIDE_SYMBOL(ctiTrampoline) "\n"
	SYMBOL_STRING(ctiTrampoline) ":" "\n"
	"sub sp, sp, #" STRINGIZE_VALUE_OF(SIZEOF_JITSTACKFRAME) "\n"
	"str lr, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "]" "\n"
	"str x19, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X19_OFFSET) "]" "\n"
	"str x20, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X20_OFFSET) "]" "\n"
	"str x21, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X21_OFFSET) "]" "\n"
	"str x22, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X22_OFFSET) "]" "\n"
	"str x23, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X23_OFFSET) "]" "\n"
	"str x24, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X24_OFFSET) "]" "\n"
	"str x25, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X25_OFFSET) "]" "\n"
	"str x26, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X26_OFFSET) "]" "\n"
	"str x27, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X27_OFFSET) "]" "\n"
	"str x28, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X28_OFFSET) "]" "\n"
	"str x1, [sp, #" STRINGIZE_VALUE_OF(REGISTER_FILE_OFFSET) "]" "\n"
	"str x2, [sp, #" STRINGIZE_VALUE_OF(CALLFRAME_OFFSET) "]" "\n"
	"str x4, [sp, #" STRINGIZE_VALUE_OF(PROFILER_REFERENCE_OFFSET) "]" "\n"
	"str x5, [sp, #" STRINGIZE_VALUE_OF(VM_OFFSET) "]" "\n"
	"mov x25, x2" "\n" // callFrameRegister = ARM64Registers::x25
	"mov x26, #512" "\n" // timeoutCheckRegister = ARM64Registers::x26
	"mov x27, #0xFFFF000000000000" "\n" // tagTypeNumberRegister = ARM64Registers::x27
	"add x28, x27, #2" "\n" // ( #0xFFFF000000000002 ) tagMaskRegister = ARM64Registers::x28
	"blr x0" "\n"
	"ldr x28, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X28_OFFSET) "]" "\n"
	"ldr x27, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X27_OFFSET) "]" "\n"
	"ldr x26, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X26_OFFSET) "]" "\n"
	"ldr x25, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X25_OFFSET) "]" "\n"
	"ldr x24, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X24_OFFSET) "]" "\n"
	"ldr x23, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X23_OFFSET) "]" "\n"
	"ldr x22, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X22_OFFSET) "]" "\n"
	"ldr x21, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X21_OFFSET) "]" "\n"
	"ldr x20, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X20_OFFSET) "]" "\n"
	"ldr x19, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X19_OFFSET) "]" "\n"
	"ldr lr, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "]" "\n"
	"add sp, sp, #" STRINGIZE_VALUE_OF(SIZEOF_JITSTACKFRAME) "\n"
	"ret" "\n"

	HIDE_SYMBOL(ctiOpThrowNotCaught) "\n"
	SYMBOL_STRING(ctiOpThrowNotCaught) ":" "\n"
	"ldr x28, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X28_OFFSET) "]" "\n"
	"ldr x27, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X27_OFFSET) "]" "\n"
	"ldr x26, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X26_OFFSET) "]" "\n"
	"ldr x25, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X25_OFFSET) "]" "\n"
	"ldr x24, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X24_OFFSET) "]" "\n"
	"ldr x23, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X23_OFFSET) "]" "\n"
	"ldr x22, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X22_OFFSET) "]" "\n"
	"ldr x21, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X21_OFFSET) "]" "\n"
	"ldr x20, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X20_OFFSET) "]" "\n"
	"ldr x19, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_X19_OFFSET) "]" "\n"
	"ldr lr, [sp, #" STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "]" "\n"
	"add sp, sp, #" STRINGIZE_VALUE_OF(SIZEOF_JITSTACKFRAME) "\n"
	"ret" "\n"
	);

	#define DEFINE_STUB_FUNCTION(rtype, op) \
	extern "C" { \
	rtype JITStubThunked_##op(STUB_ARGS_DECLARATION); \
	}; \
	asm ( \
	".section __TEXT,__text,regular,pure_instructions" "\n" \
	".globl " SYMBOL_STRING(cti_##op) "\n" \
	".align 2" "\n" \
	HIDE_SYMBOL(cti_##op) "\n" \
	SYMBOL_STRING(cti_##op) ":" "\n" \
	"str lr, [sp, #" STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "]" "\n" \
	"bl " SYMBOL_STRING(JITStubThunked_##op) "\n" \
	"ldr lr, [sp, #" STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "]" "\n" \
	"ret" "\n" \
	); \
	rtype JITStubThunked_##op(STUB_ARGS_DECLARATION) \

	#endif // COMPILER(GCC)

	} // namespace JSC

	#endif // JITStubsARM64_h