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JITStubsMIPS.h
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executable file
·257 lines (240 loc) · 9.77 KB
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/*
* Copyright (C) 2008, 2009, 2013 Apple Inc. All rights reserved.
* Copyright (C) 2008 Cameron Zwarich <[email protected]>
* 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(ctiVMThrowTrampoline) "\n"
".ent " SYMBOL_STRING(ctiVMThrowTrampoline) "\n"
SYMBOL_STRING(ctiVMThrowTrampoline) ":" "\n"
#if WTF_MIPS_PIC
".set macro" "\n"
".cpload $31" "\n"
"la $25," SYMBOL_STRING(cti_vm_throw) "\n"
".set nomacro" "\n"
"bal " SYMBOL_STRING(cti_vm_throw) "\n"
"move $4,$29" "\n"
#else
"jal " SYMBOL_STRING(cti_vm_throw) "\n"
"move $4,$29" "\n"
#endif
"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(ctiVMThrowTrampoline) "\n"
);
asm (
".text" "\n"
".align 2" "\n"
".set noreorder" "\n"
".set nomacro" "\n"
".set nomips16" "\n"
".globl " SYMBOL_STRING(ctiVMHandleException) "\n"
".ent " SYMBOL_STRING(ctiVMHandleException) "\n"
SYMBOL_STRING(ctiVMHandleException) ":" "\n"
#if WTF_MIPS_PIC
".set macro" "\n"
".cpload $25" "\n"
"la $25," SYMBOL_STRING(cti_vm_handle_exception) "\n"
".set nomacro" "\n"
"bal " SYMBOL_STRING(cti_vm_handle_exception) "\n"
"move $4,$16" "\n"
#else
"jal " SYMBOL_STRING(cti_vm_handle_exception) "\n"
"move $4,$16" "\n"
#endif
// When cti_vm_handle_exception returns, v0 has callFrame and v1 has handler address
"move $31,$3" "\n"
"jr $31" "\n"
"move $16,$2 " "\n"
".set reorder" "\n"
".set macro" "\n"
".end " SYMBOL_STRING(ctiVMHandleException) "\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
static void performMIPSJITAssertions()
{
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, preservedGP) == PRESERVED_GP_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, preservedS0) == PRESERVED_S0_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, preservedS1) == PRESERVED_S1_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, preservedS2) == PRESERVED_S2_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, preservedReturnAddress) == PRESERVED_RETURN_ADDRESS_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, thunkReturnAddress) == THUNK_RETURN_ADDRESS_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, stack) == REGISTER_FILE_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, vm) == VM_OFFSET);
}
} // namespace JSC
#endif // JITStubsMIPS_h