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JITStubsSH4.h
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executable file
·176 lines (161 loc) · 5.81 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 JITStubsSH4_h
#define JITStubsSH4_h
#if !CPU(SH4)
#error "JITStubsSH4.h should only be #included if CPU(SH4)"
#endif
#if !USE(JSVALUE32_64)
#error "JITStubsSH4.h only implements USE(JSVALUE32_64)"
#endif
namespace JSC {
#define THUNK_RETURN_ADDRESS_OFFSET 56
#define SAVED_R8_OFFSET 60
#define SYMBOL_STRING(name) #name
/* code (r4), JSStack* (r5), CallFrame* (r6), void* unused1 (r7), void* unused2(sp), VM (sp)*/
asm volatile (
".text\n"
".globl " SYMBOL_STRING(ctiTrampoline) "\n"
HIDE_SYMBOL(ctiTrampoline) "\n"
SYMBOL_STRING(ctiTrampoline) ":" "\n"
"mov.l r7, @-r15" "\n"
"mov.l r6, @-r15" "\n"
"mov.l r5, @-r15" "\n"
"mov.l r14, @-r15" "\n"
"sts.l pr, @-r15" "\n"
"mov.l r13, @-r15" "\n"
"mov.l r11, @-r15" "\n"
"mov.l r10, @-r15" "\n"
"mov.l r9, @-r15" "\n"
"mov.l r8, @-r15" "\n"
"add #-" STRINGIZE_VALUE_OF(SAVED_R8_OFFSET) ", r15" "\n"
"mov r6, r14" "\n"
"jsr @r4" "\n"
"nop" "\n"
"add #" STRINGIZE_VALUE_OF(SAVED_R8_OFFSET) ", r15" "\n"
"mov.l @r15+,r8" "\n"
"mov.l @r15+,r9" "\n"
"mov.l @r15+,r10" "\n"
"mov.l @r15+,r11" "\n"
"mov.l @r15+,r13" "\n"
"lds.l @r15+,pr" "\n"
"mov.l @r15+,r14" "\n"
"add #12, r15" "\n"
"rts" "\n"
"nop" "\n"
".globl " SYMBOL_STRING(ctiTrampolineEnd) "\n"
HIDE_SYMBOL(ctiTrampolineEnd) "\n"
SYMBOL_STRING(ctiTrampolineEnd) ":" "\n"
);
asm volatile (
".globl " SYMBOL_STRING(ctiVMThrowTrampoline) "\n"
HIDE_SYMBOL(ctiVMThrowTrampoline) "\n"
SYMBOL_STRING(ctiVMThrowTrampoline) ":" "\n"
"mov.l .L2"SYMBOL_STRING(cti_vm_throw)",r0" "\n"
"mov r15, r4" "\n"
"mov.l @(r0,r12),r11" "\n"
"jsr @r11" "\n"
"nop" "\n"
"add #" STRINGIZE_VALUE_OF(SAVED_R8_OFFSET) ", r15" "\n"
"mov.l @r15+,r8" "\n"
"mov.l @r15+,r9" "\n"
"mov.l @r15+,r10" "\n"
"mov.l @r15+,r11" "\n"
"mov.l @r15+,r13" "\n"
"lds.l @r15+,pr" "\n"
"mov.l @r15+,r14" "\n"
"add #12, r15" "\n"
"rts" "\n"
"nop" "\n"
".align 2" "\n"
".L2"SYMBOL_STRING(cti_vm_throw)":.long " SYMBOL_STRING(cti_vm_throw)"@GOT \n"
);
asm volatile (
".globl " SYMBOL_STRING(ctiVMHandleException) "\n"
HIDE_SYMBOL(ctiVMHandleException) "\n"
SYMBOL_STRING(ctiVMHandleException) ":" "\n"
"mov.l .L2"SYMBOL_STRING(cti_vm_handle_exception)",r0" "\n"
"mov r14, r4" "\n"
"mov.l @(r0,r12),r11" "\n"
"jsr @r11" "\n"
// When cti_vm_handle_exception returns, r0 has callFrame and r1 has handler address
"nop" "\n"
"mov r0, r14" "\n"
"lds r1, pr" "\n"
"rts" "\n"
"nop" "\n"
".align 2" "\n"
".L2"SYMBOL_STRING(cti_vm_handle_exception)":.long " SYMBOL_STRING(cti_vm_handle_exception)"@GOT \n"
);
asm volatile (
".globl " SYMBOL_STRING(ctiOpThrowNotCaught) "\n"
HIDE_SYMBOL(ctiOpThrowNotCaught) "\n"
SYMBOL_STRING(ctiOpThrowNotCaught) ":" "\n"
"add #" STRINGIZE_VALUE_OF(SAVED_R8_OFFSET) ", r15" "\n"
"mov.l @r15+,r8" "\n"
"mov.l @r15+,r9" "\n"
"mov.l @r15+,r10" "\n"
"mov.l @r15+,r11" "\n"
"mov.l @r15+,r13" "\n"
"lds.l @r15+,pr" "\n"
"mov.l @r15+,r14" "\n"
"add #12, r15" "\n"
"rts" "\n"
"nop" "\n"
);
#define DEFINE_STUB_FUNCTION(rtype, op) \
extern "C" { \
rtype JITStubThunked_##op(STUB_ARGS_DECLARATION); \
}; \
asm volatile( \
".align 2" "\n" \
".globl " SYMBOL_STRING(cti_##op) "\n" \
SYMBOL_STRING(cti_##op) ":" "\n" \
"sts pr, r11" "\n" \
"mov.l r11, @(" STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) ", r15)" "\n" \
"mov.l .L2"SYMBOL_STRING(JITStubThunked_##op)",r0" "\n" \
"mov.l @(r0,r12),r11" "\n" \
"jsr @r11" "\n" \
"nop" "\n" \
"mov.l @(" STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) ", r15), r11 " "\n" \
"lds r11, pr " "\n" \
"rts" "\n" \
"nop" "\n" \
".align 2" "\n" \
".L2"SYMBOL_STRING(JITStubThunked_##op)":.long " SYMBOL_STRING(JITStubThunked_##op)"@GOT \n" \
); \
rtype JITStubThunked_##op(STUB_ARGS_DECLARATION)
static void performSH4JITAssertions()
{
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, thunkReturnAddress) == THUNK_RETURN_ADDRESS_OFFSET);
ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, savedR8) == SAVED_R8_OFFSET);
}
} // namespace JSC
#endif // JITStubsSH4_h