| /* |
| * Copyright (C) 2008, 2009, 2013 Apple Inc. All rights reserved. |
| * Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca> |
| * Copyright (C) Research In Motion Limited 2010, 2011. 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 JITStubsMIPS_h |
| #define JITStubsMIPS_h |
| |
| #if !CPU(MIPS) |
| #error "JITStubsMIPS.h should only be #included if CPU(MIPS)" |
| #endif |
| |
| #if !USE(JSVALUE32_64) |
| #error "JITStubsMIPS.h only implements USE(JSVALUE32_64)" |
| #endif |
| |
| namespace JSC { |
| |
| #define PRESERVED_GP_OFFSET 60 |
| #define PRESERVED_S0_OFFSET 64 |
| #define PRESERVED_S1_OFFSET 68 |
| #define PRESERVED_S2_OFFSET 72 |
| #define PRESERVED_S3_OFFSET 76 |
| #define PRESERVED_S4_OFFSET 80 |
| #define PRESERVED_RETURN_ADDRESS_OFFSET 84 |
| #define THUNK_RETURN_ADDRESS_OFFSET 88 |
| #define REGISTER_FILE_OFFSET 92 |
| #define VM_OFFSET 108 |
| #define STACK_LENGTH 112 |
| |
| asm ( |
| ".text" "\n" |
| ".align 2" "\n" |
| ".set noreorder" "\n" |
| ".set nomacro" "\n" |
| ".set nomips16" "\n" |
| ".globl " SYMBOL_STRING(ctiTrampoline) "\n" |
| ".ent " SYMBOL_STRING(ctiTrampoline) "\n" |
| SYMBOL_STRING(ctiTrampoline) ":" "\n" |
| "addiu $29,$29,-" STRINGIZE_VALUE_OF(STACK_LENGTH) "\n" |
| "sw $31," STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "($29)" "\n" |
| "sw $20," STRINGIZE_VALUE_OF(PRESERVED_S4_OFFSET) "($29)" "\n" |
| "sw $19," STRINGIZE_VALUE_OF(PRESERVED_S3_OFFSET) "($29)" "\n" |
| "sw $18," STRINGIZE_VALUE_OF(PRESERVED_S2_OFFSET) "($29)" "\n" |
| "sw $17," STRINGIZE_VALUE_OF(PRESERVED_S1_OFFSET) "($29)" "\n" |
| "sw $16," STRINGIZE_VALUE_OF(PRESERVED_S0_OFFSET) "($29)" "\n" |
| #if WTF_MIPS_PIC |
| "sw $28," STRINGIZE_VALUE_OF(PRESERVED_GP_OFFSET) "($29)" "\n" |
| #endif |
| "move $16,$6 # set callFrameRegister" "\n" |
| "li $17,512 # set timeoutCheckRegister" "\n" |
| "move $25,$4 # move executableAddress to t9" "\n" |
| "sw $5," STRINGIZE_VALUE_OF(REGISTER_FILE_OFFSET) "($29) # store JSStack to current stack" "\n" |
| "lw $9," STRINGIZE_VALUE_OF(STACK_LENGTH + 20) "($29) # load vm from previous stack" "\n" |
| "jalr $25" "\n" |
| "sw $9," STRINGIZE_VALUE_OF(VM_OFFSET) "($29) # store vm to current stack" "\n" |
| "lw $16," STRINGIZE_VALUE_OF(PRESERVED_S0_OFFSET) "($29)" "\n" |
| "lw $17," STRINGIZE_VALUE_OF(PRESERVED_S1_OFFSET) "($29)" "\n" |
| "lw $18," STRINGIZE_VALUE_OF(PRESERVED_S2_OFFSET) "($29)" "\n" |
| "lw $19," STRINGIZE_VALUE_OF(PRESERVED_S3_OFFSET) "($29)" "\n" |
| "lw $20," STRINGIZE_VALUE_OF(PRESERVED_S4_OFFSET) "($29)" "\n" |
| "lw $31," STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "($29)" "\n" |
| "jr $31" "\n" |
| "addiu $29,$29," STRINGIZE_VALUE_OF(STACK_LENGTH) "\n" |
| ".set reorder" "\n" |
| ".set macro" "\n" |
| ".end " SYMBOL_STRING(ctiTrampoline) "\n" |
| ".globl " SYMBOL_STRING(ctiTrampolineEnd) "\n" |
| HIDE_SYMBOL(ctiTrampolineEnd) "\n" |
| SYMBOL_STRING(ctiTrampolineEnd) ":" "\n" |
| ); |
| |
| asm ( |
| ".text" "\n" |
| ".align 2" "\n" |
| ".set noreorder" "\n" |
| ".set nomacro" "\n" |
| ".set nomips16" "\n" |
| ".globl " SYMBOL_STRING(ctiOpThrowNotCaught) "\n" |
| ".ent " SYMBOL_STRING(ctiOpThrowNotCaught) "\n" |
| SYMBOL_STRING(ctiOpThrowNotCaught) ":" "\n" |
| "lw $16," STRINGIZE_VALUE_OF(PRESERVED_S0_OFFSET) "($29)" "\n" |
| "lw $17," STRINGIZE_VALUE_OF(PRESERVED_S1_OFFSET) "($29)" "\n" |
| "lw $18," STRINGIZE_VALUE_OF(PRESERVED_S2_OFFSET) "($29)" "\n" |
| "lw $19," STRINGIZE_VALUE_OF(PRESERVED_S3_OFFSET) "($29)" "\n" |
| "lw $20," STRINGIZE_VALUE_OF(PRESERVED_S4_OFFSET) "($29)" "\n" |
| "lw $31," STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "($29)" "\n" |
| "jr $31" "\n" |
| "addiu $29,$29," STRINGIZE_VALUE_OF(STACK_LENGTH) "\n" |
| ".set reorder" "\n" |
| ".set macro" "\n" |
| ".end " SYMBOL_STRING(ctiOpThrowNotCaught) "\n" |
| ); |
| |
| |
| #if WTF_MIPS_PIC |
| #define DEFINE_STUB_FUNCTION(rtype, op) \ |
| extern "C" { \ |
| rtype JITStubThunked_##op(STUB_ARGS_DECLARATION); \ |
| }; \ |
| asm ( \ |
| ".text" "\n" \ |
| ".align 2" "\n" \ |
| ".set noreorder" "\n" \ |
| ".set nomacro" "\n" \ |
| ".set nomips16" "\n" \ |
| ".globl " SYMBOL_STRING(cti_##op) "\n" \ |
| ".ent " SYMBOL_STRING(cti_##op) "\n" \ |
| SYMBOL_STRING(cti_##op) ":" "\n" \ |
| ".set macro" "\n" \ |
| ".cpload $25" "\n" \ |
| "sw $31," STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "($29)" "\n" \ |
| "la $25," SYMBOL_STRING(JITStubThunked_##op) "\n" \ |
| ".set nomacro" "\n" \ |
| ".reloc 1f,R_MIPS_JALR," SYMBOL_STRING(JITStubThunked_##op) "\n" \ |
| "1: jalr $25" "\n" \ |
| "nop" "\n" \ |
| "lw $31," STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "($29)" "\n" \ |
| "jr $31" "\n" \ |
| "nop" "\n" \ |
| ".set reorder" "\n" \ |
| ".set macro" "\n" \ |
| ".end " SYMBOL_STRING(cti_##op) "\n" \ |
| ); \ |
| rtype JITStubThunked_##op(STUB_ARGS_DECLARATION) |
| |
| #else // WTF_MIPS_PIC |
| #define DEFINE_STUB_FUNCTION(rtype, op) \ |
| extern "C" { \ |
| rtype JITStubThunked_##op(STUB_ARGS_DECLARATION); \ |
| }; \ |
| asm ( \ |
| ".text" "\n" \ |
| ".align 2" "\n" \ |
| ".set noreorder" "\n" \ |
| ".set nomacro" "\n" \ |
| ".set nomips16" "\n" \ |
| ".globl " SYMBOL_STRING(cti_##op) "\n" \ |
| ".ent " SYMBOL_STRING(cti_##op) "\n" \ |
| SYMBOL_STRING(cti_##op) ":" "\n" \ |
| "sw $31," STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "($29)" "\n" \ |
| "jal " SYMBOL_STRING(JITStubThunked_##op) "\n" \ |
| "nop" "\n" \ |
| "lw $31," STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "($29)" "\n" \ |
| "jr $31" "\n" \ |
| "nop" "\n" \ |
| ".set reorder" "\n" \ |
| ".set macro" "\n" \ |
| ".end " SYMBOL_STRING(cti_##op) "\n" \ |
| ); \ |
| rtype JITStubThunked_##op(STUB_ARGS_DECLARATION) |
| |
| #endif // WTF_MIPS_PIC |
| |
| } // namespace JSC |
| |
| #endif // JITStubsMIPS_h |
