/*
* This file was generated automatically by gen-template.py for 'armv7-a'.
*
* --> DO NOT EDIT <--
*/
/* File: armv5te/header.S */
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#if defined(WITH_JIT)
/*
* ARMv5 definitions and declarations.
*/
/*
ARM EABI general notes:
r0-r3 hold first 4 args to a method; they are not preserved across method calls
r4-r8 are available for general use
r9 is given special treatment in some situations, but not for us
r10 (sl) seems to be generally available
r11 (fp) is used by gcc (unless -fomit-frame-pointer is set)
r12 (ip) is scratch -- not preserved across method calls
r13 (sp) should be managed carefully in case a signal arrives
r14 (lr) must be preserved
r15 (pc) can be tinkered with directly
r0 holds returns of <= 4 bytes
r0-r1 hold returns of 8 bytes, low word in r0
Callee must save/restore r4+ (except r12) if it modifies them.
Stack is "full descending". Only the arguments that don't fit in the first 4
registers are placed on the stack. "sp" points at the first stacked argument
(i.e. the 5th arg).
VFP: single-precision results in s0, double-precision results in d0.
In the EABI, "sp" must be 64-bit aligned on entry to a function, and any
64-bit quantities (long long, double) must be 64-bit aligned.
*/
/*
JIT and ARM notes:
The following registers have fixed assignments:
reg nick purpose
r5 rFP interpreted frame pointer, used for accessing locals and args
r6 rSELF thread pointer
The following registers have fixed assignments in mterp but are scratch
registers in compiled code
reg nick purpose
r4 rPC interpreted program counter, used for fetching instructions
r7 rINST first 16-bit code unit of current instruction
r8 rIBASE interpreted instruction base pointer, used for computed goto
Macros are provided for common operations. Each macro MUST emit only
one instruction to make instruction-counting easier. They MUST NOT alter
unspecified registers or condition codes.
*/
/* single-purpose registers, given names for clarity */
#define rPC r4
#define rFP r5
#define rSELF r6
#define rINST r7
#define rIBASE r8
/*
* Given a frame pointer, find the stack save area.
*
* In C this is "((StackSaveArea*)(_fp) -1)".
*/
#define SAVEAREA_FROM_FP(_reg, _fpreg) \
sub _reg, _fpreg, #sizeofStackSaveArea
#define EXPORT_PC() \
str rPC, [rFP, #(-sizeofStackSaveArea + offStackSaveArea_currentPc)]
/*
* This is a #include, not a %include, because we want the C pre-processor
* to expand the macros into assembler assignment statements.
*/
#include "../../../mterp/common/asm-constants.h"
/* File: armv5te-vfp/platform.S */
/*
* ===========================================================================
* CPU-version-specific defines and utility
* ===========================================================================
*/
.global dvmCompilerTemplateStart
.type dvmCompilerTemplateStart, %function
.section .data.rel.ro
dvmCompilerTemplateStart:
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_CMP_LONG
dvmCompiler_TEMPLATE_CMP_LONG:
/* File: armv5te/TEMPLATE_CMP_LONG.S */
/*
* Compare two 64-bit values. Puts 0, 1, or -1 into the destination
* register based on the results of the comparison.
*
* We load the full values with LDM, but in practice many values could
* be resolved by only looking at the high word. This could be made
* faster or slower by splitting the LDM into a pair of LDRs.
*
* If we just wanted to set condition flags, we could do this:
* subs ip, r0, r2
* sbcs ip, r1, r3
* subeqs ip, r0, r2
* Leaving { <0, 0, >0 } in ip. However, we have to set it to a specific
* integer value, which we can do with 2 conditional mov/mvn instructions
* (set 1, set -1; if they're equal we already have 0 in ip), giving
* us a constant 5-cycle path plus a branch at the end to the
* instruction epilogue code. The multi-compare approach below needs
* 2 or 3 cycles + branch if the high word doesn't match, 6 + branch
* in the worst case (the 64-bit values are equal).
*/
/* cmp-long vAA, vBB, vCC */
cmp r1, r3 @ compare (vBB+1, vCC+1)
blt .LTEMPLATE_CMP_LONG_less @ signed compare on high part
bgt .LTEMPLATE_CMP_LONG_greater
subs r0, r0, r2 @ r0<- r0 - r2
bxeq lr
bhi .LTEMPLATE_CMP_LONG_greater @ unsigned compare on low part
.LTEMPLATE_CMP_LONG_less:
mvn r0, #0 @ r0<- -1
bx lr
.LTEMPLATE_CMP_LONG_greater:
mov r0, #1 @ r0<- 1
bx lr
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_RETURN
dvmCompiler_TEMPLATE_RETURN:
/* File: armv5te/TEMPLATE_RETURN.S */
/*
* Unwind a frame from the Dalvik stack for compiled OP_RETURN_XXX.
* If the stored value in returnAddr
* is non-zero, the caller is compiled by the JIT thus return to the
* address in the code cache following the invoke instruction. Otherwise
* return to the special dvmJitToInterpNoChain entry point.
*/
#if defined(TEMPLATE_INLINE_PROFILING)
stmfd sp!, {r0-r2,lr} @ preserve live registers
mov r0, r6
@ r0=rSELF
ldr ip, .LdvmFastMethodTraceExit
blx ip
ldmfd sp!, {r0-r2,lr} @ restore live registers
#endif
SAVEAREA_FROM_FP(r0, rFP) @ r0<- saveArea (old)
ldr r10, [r0, #offStackSaveArea_prevFrame] @ r10<- saveArea->prevFrame
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
ldr rPC, [r0, #offStackSaveArea_savedPc] @ rPC<- saveArea->savedPc
ldr r2, [r10, #(offStackSaveArea_method - sizeofStackSaveArea)]
#if !defined(WITH_SELF_VERIFICATION)
ldr r9, [r0, #offStackSaveArea_returnAddr] @ r9<- chaining cell ret
#else
mov r9, #0 @ disable chaining
#endif
@ r2<- method we're returning to
cmp r2, #0 @ break frame?
#if !defined(WITH_SELF_VERIFICATION)
beq 1f @ bail to interpreter
#else
blxeq lr @ punt to interpreter and compare state
#endif
ldr r1, .LdvmJitToInterpNoChainNoProfile @ defined in footer.S
mov rFP, r10 @ publish new FP
ldr r10, [r2, #offMethod_clazz] @ r10<- method->clazz
str r2, [rSELF, #offThread_method]@ self->method = newSave->method
ldr r0, [r10, #offClassObject_pDvmDex] @ r0<- method->clazz->pDvmDex
str rFP, [rSELF, #offThread_curFrame] @ curFrame = fp
add rPC, rPC, #6 @ publish new rPC (advance 6 bytes)
str r0, [rSELF, #offThread_methodClassDex]
cmp r8, #0 @ check the break flags
movne r9, #0 @ clear the chaining cell address
str r9, [rSELF, #offThread_inJitCodeCache] @ in code cache or not
cmp r9, #0 @ chaining cell exists?
blxne r9 @ jump to the chaining cell
#if defined(WITH_JIT_TUNING)
mov r0, #kCallsiteInterpreted
#endif
mov pc, r1 @ callsite is interpreted
1:
mov r0, #0
str r0, [rSELF, #offThread_inJitCodeCache] @ reset inJitCodeCache
stmia rSELF, {rPC, rFP} @ SAVE_PC_FP_TO_SELF()
ldr r2, .LdvmMterpStdBail @ defined in footer.S
mov r0, rSELF @ Expecting rSELF in r0
blx r2 @ exit the interpreter
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_NO_OPT
dvmCompiler_TEMPLATE_INVOKE_METHOD_NO_OPT:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_NO_OPT.S */
/*
* For polymorphic callsites - setup the Dalvik frame and load Dalvik PC
* into rPC then jump to dvmJitToInterpNoChain to dispatch the
* runtime-resolved callee.
*/
@ r0 = methodToCall, r1 = returnCell, rPC = dalvikCallsite
ldrh r7, [r0, #offMethod_registersSize] @ r7<- methodToCall->regsSize
ldrh r2, [r0, #offMethod_outsSize] @ r2<- methodToCall->outsSize
ldr r9, [rSELF, #offThread_interpStackEnd] @ r9<- interpStackEnd
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
add r3, r1, #1 @ Thumb addr is odd
SAVEAREA_FROM_FP(r1, rFP) @ r1<- stack save area
sub r1, r1, r7, lsl #2 @ r1<- newFp (old savearea - regsSize)
SAVEAREA_FROM_FP(r10, r1) @ r10<- stack save area
sub r10, r10, r2, lsl #2 @ r10<- bottom (newsave - outsSize)
cmp r10, r9 @ bottom < interpStackEnd?
bxlo lr @ return to raise stack overflow excep.
@ r1 = newFP, r0 = methodToCall, r3 = returnCell, rPC = dalvikCallsite
ldr r9, [r0, #offMethod_clazz] @ r9<- method->clazz
ldr r10, [r0, #offMethod_accessFlags] @ r10<- methodToCall->accessFlags
str rPC, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
str rPC, [r1, #(offStackSaveArea_savedPc - sizeofStackSaveArea)]
ldr rPC, [r0, #offMethod_insns] @ rPC<- methodToCall->insns
@ set up newSaveArea
str rFP, [r1, #(offStackSaveArea_prevFrame - sizeofStackSaveArea)]
str r3, [r1, #(offStackSaveArea_returnAddr - sizeofStackSaveArea)]
str r0, [r1, #(offStackSaveArea_method - sizeofStackSaveArea)]
cmp r8, #0 @ breakFlags != 0
bxne lr @ bail to the interpreter
tst r10, #ACC_NATIVE
#if !defined(WITH_SELF_VERIFICATION)
bne .LinvokeNative
#else
bxne lr @ bail to the interpreter
#endif
ldr r10, .LdvmJitToInterpTraceSelectNoChain
ldr r3, [r9, #offClassObject_pDvmDex] @ r3<- method->clazz->pDvmDex
@ Update "thread" values for the new method
str r0, [rSELF, #offThread_method] @ self->method = methodToCall
str r3, [rSELF, #offThread_methodClassDex] @ self->methodClassDex = ...
mov rFP, r1 @ fp = newFp
str rFP, [rSELF, #offThread_curFrame] @ curFrame = newFp
#if defined(TEMPLATE_INLINE_PROFILING)
stmfd sp!, {r0-r3} @ preserve r0-r3
mov r1, r6
@ r0=methodToCall, r1=rSELF
ldr ip, .LdvmFastMethodTraceEnter
blx ip
ldmfd sp!, {r0-r3} @ restore r0-r3
#endif
@ Start executing the callee
#if defined(WITH_JIT_TUNING)
mov r0, #kInlineCacheMiss
#endif
bx r10 @ dvmJitToInterpTraceSelectNoChain
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_CHAIN
dvmCompiler_TEMPLATE_INVOKE_METHOD_CHAIN:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_CHAIN.S */
/*
* For monomorphic callsite, setup the Dalvik frame and return to the
* Thumb code through the link register to transfer control to the callee
* method through a dedicated chaining cell.
*/
@ r0 = methodToCall, r1 = returnCell, r2 = methodToCall->outsSize
@ rPC = dalvikCallsite, r7 = methodToCall->registersSize
@ methodToCall is guaranteed to be non-native
.LinvokeChain:
ldr r9, [rSELF, #offThread_interpStackEnd] @ r9<- interpStackEnd
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
add r3, r1, #1 @ Thumb addr is odd
SAVEAREA_FROM_FP(r1, rFP) @ r1<- stack save area
sub r1, r1, r7, lsl #2 @ r1<- newFp (old savearea - regsSize)
SAVEAREA_FROM_FP(r10, r1) @ r10<- stack save area
add r12, lr, #2 @ setup the punt-to-interp address
sub r10, r10, r2, lsl #2 @ r10<- bottom (newsave - outsSize)
cmp r10, r9 @ bottom < interpStackEnd?
bxlo r12 @ return to raise stack overflow excep.
@ r1 = newFP, r0 = methodToCall, r3 = returnCell, rPC = dalvikCallsite
ldr r9, [r0, #offMethod_clazz] @ r9<- method->clazz
str rPC, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
str rPC, [r1, #(offStackSaveArea_savedPc - sizeofStackSaveArea)]
@ set up newSaveArea
str rFP, [r1, #(offStackSaveArea_prevFrame - sizeofStackSaveArea)]
str r3, [r1, #(offStackSaveArea_returnAddr - sizeofStackSaveArea)]
str r0, [r1, #(offStackSaveArea_method - sizeofStackSaveArea)]
cmp r8, #0 @ breakFlags != 0
bxne r12 @ bail to the interpreter
ldr r3, [r9, #offClassObject_pDvmDex] @ r3<- method->clazz->pDvmDex
@ Update "thread" values for the new method
str r0, [rSELF, #offThread_method] @ self->method = methodToCall
str r3, [rSELF, #offThread_methodClassDex] @ self->methodClassDex = ...
mov rFP, r1 @ fp = newFp
str rFP, [rSELF, #offThread_curFrame] @ curFrame = newFp
#if defined(TEMPLATE_INLINE_PROFILING)
stmfd sp!, {r0-r2,lr} @ preserve clobbered live registers
mov r1, r6
@ r0=methodToCall, r1=rSELF
ldr ip, .LdvmFastMethodTraceEnter
blx ip
ldmfd sp!, {r0-r2,lr} @ restore registers
#endif
bx lr @ return to the callee-chaining cell
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_PREDICTED_CHAIN
dvmCompiler_TEMPLATE_INVOKE_METHOD_PREDICTED_CHAIN:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_PREDICTED_CHAIN.S */
/*
* For polymorphic callsite, check whether the cached class pointer matches
* the current one. If so setup the Dalvik frame and return to the
* Thumb code through the link register to transfer control to the callee
* method through a dedicated chaining cell.
*
* The predicted chaining cell is declared in ArmLIR.h with the
* following layout:
*
* typedef struct PredictedChainingCell {
* u4 branch;
* const ClassObject *clazz;
* const Method *method;
* u4 counter;
* } PredictedChainingCell;
*
* Upon returning to the callsite:
* - lr : to branch to the chaining cell
* - lr+2: to punt to the interpreter
* - lr+4: to fully resolve the callee and may rechain.
* r3 <- class
* r9 <- counter
*/
@ r0 = this, r1 = returnCell, r2 = predictedChainCell, rPC = dalvikCallsite
ldr r3, [r0, #offObject_clazz] @ r3 <- this->class
ldr r8, [r2, #4] @ r8 <- predictedChainCell->clazz
ldr r0, [r2, #8] @ r0 <- predictedChainCell->method
ldr r9, [rSELF, #offThread_icRechainCount] @ r1 <- shared rechainCount
cmp r3, r8 @ predicted class == actual class?
#if defined(WITH_JIT_TUNING)
ldr r7, .LdvmICHitCount
#if defined(WORKAROUND_CORTEX_A9_745320)
/* Don't use conditional loads if the HW defect exists */
bne 101f
ldr r10, [r7, #0]
101:
#else
ldreq r10, [r7, #0]
#endif
add r10, r10, #1
streq r10, [r7, #0]
#endif
ldreqh r7, [r0, #offMethod_registersSize] @ r7<- methodToCall->regsSize
ldreqh r2, [r0, #offMethod_outsSize] @ r2<- methodToCall->outsSize
beq .LinvokeChain @ predicted chain is valid
ldr r7, [r3, #offClassObject_vtable] @ r7 <- this->class->vtable
cmp r8, #0 @ initialized class or not
moveq r1, #0
subne r1, r9, #1 @ count--
strne r1, [rSELF, #offThread_icRechainCount] @ write back to thread
add lr, lr, #4 @ return to fully-resolve landing pad
/*
* r1 <- count
* r2 <- &predictedChainCell
* r3 <- this->class
* r4 <- dPC
* r7 <- this->class->vtable
*/
bx lr
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_NATIVE
dvmCompiler_TEMPLATE_INVOKE_METHOD_NATIVE:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_NATIVE.S */
@ r0 = methodToCall, r1 = returnCell, rPC = dalvikCallsite
@ r7 = methodToCall->registersSize
ldr r9, [rSELF, #offThread_interpStackEnd] @ r9<- interpStackEnd
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
add r3, r1, #1 @ Thumb addr is odd
SAVEAREA_FROM_FP(r1, rFP) @ r1<- stack save area
sub r1, r1, r7, lsl #2 @ r1<- newFp (old savearea - regsSize)
SAVEAREA_FROM_FP(r10, r1) @ r10<- stack save area
cmp r10, r9 @ bottom < interpStackEnd?
bxlo lr @ return to raise stack overflow excep.
@ r1 = newFP, r0 = methodToCall, r3 = returnCell, rPC = dalvikCallsite
str rPC, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
str rPC, [r1, #(offStackSaveArea_savedPc - sizeofStackSaveArea)]
@ set up newSaveArea
str rFP, [r1, #(offStackSaveArea_prevFrame - sizeofStackSaveArea)]
str r3, [r1, #(offStackSaveArea_returnAddr - sizeofStackSaveArea)]
str r0, [r1, #(offStackSaveArea_method - sizeofStackSaveArea)]
cmp r8, #0 @ breakFlags != 0
ldr r8, [r0, #offMethod_nativeFunc] @ r8<- method->nativeFunc
#if !defined(WITH_SELF_VERIFICATION)
bxne lr @ bail to the interpreter
#else
bx lr @ bail to interpreter unconditionally
#endif
@ go ahead and transfer control to the native code
ldr r9, [rSELF, #offThread_jniLocal_topCookie]@r9<-thread->localRef->...
mov r2, #0
str r1, [rSELF, #offThread_curFrame] @ curFrame = newFp
str r2, [rSELF, #offThread_inJitCodeCache] @ not in the jit code cache
str r9, [r1, #(offStackSaveArea_localRefCookie - sizeofStackSaveArea)]
@ newFp->localRefCookie=top
SAVEAREA_FROM_FP(r10, r1) @ r10<- new stack save area
mov r2, r0 @ arg2<- methodToCall
mov r0, r1 @ arg0<- newFP
add r1, rSELF, #offThread_retval @ arg1<- &retval
mov r3, rSELF @ arg3<- self
#if defined(TEMPLATE_INLINE_PROFILING)
@ r2=methodToCall, r6=rSELF
stmfd sp!, {r2,r6} @ to be consumed after JNI return
stmfd sp!, {r0-r3} @ preserve r0-r3
mov r0, r2
mov r1, r6
@ r0=JNIMethod, r1=rSELF
ldr ip, .LdvmFastMethodTraceEnter
blx ip
ldmfd sp!, {r0-r3} @ restore r0-r3
#endif
blx r8 @ off to the native code
#if defined(TEMPLATE_INLINE_PROFILING)
ldmfd sp!, {r0-r1} @ restore r2 and r6
@ r0=JNIMethod, r1=rSELF
ldr ip, .LdvmFastNativeMethodTraceExit
blx ip
#endif
@ native return; r10=newSaveArea
@ equivalent to dvmPopJniLocals
ldr r2, [r10, #offStackSaveArea_returnAddr] @ r2 = chaining cell ret
ldr r0, [r10, #offStackSaveArea_localRefCookie] @ r0<- saved->top
ldr r1, [rSELF, #offThread_exception] @ check for exception
str rFP, [rSELF, #offThread_curFrame] @ curFrame = fp
cmp r1, #0 @ null?
str r0, [rSELF, #offThread_jniLocal_topCookie] @ new top <- old top
ldr r0, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
@ r0 = dalvikCallsitePC
bne .LhandleException @ no, handle exception
str r2, [rSELF, #offThread_inJitCodeCache] @ set the mode properly
cmp r2, #0 @ return chaining cell still exists?
bxne r2 @ yes - go ahead
@ continue executing the next instruction through the interpreter
ldr r1, .LdvmJitToInterpTraceSelectNoChain @ defined in footer.S
add rPC, r0, #6 @ reconstruct new rPC (advance 6 bytes)
#if defined(WITH_JIT_TUNING)
mov r0, #kCallsiteInterpreted
#endif
mov pc, r1
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_MUL_LONG
dvmCompiler_TEMPLATE_MUL_LONG:
/* File: armv5te/TEMPLATE_MUL_LONG.S */
/*
* Signed 64-bit integer multiply.
*
* For JIT: op1 in r0/r1, op2 in r2/r3, return in r0/r1
*
* Consider WXxYZ (r1r0 x r3r2) with a long multiply:
* WX
* x YZ
* --------
* ZW ZX
* YW YX
*
* The low word of the result holds ZX, the high word holds
* (ZW+YX) + (the high overflow from ZX). YW doesn't matter because
* it doesn't fit in the low 64 bits.
*
* Unlike most ARM math operations, multiply instructions have
* restrictions on using the same register more than once (Rd and Rm
* cannot be the same).
*/
/* mul-long vAA, vBB, vCC */
mul ip, r2, r1 @ ip<- ZxW
umull r9, r10, r2, r0 @ r9/r10 <- ZxX
mla r2, r0, r3, ip @ r2<- YxX + (ZxW)
mov r0, r9
add r1, r2, r10 @ r1<- r10 + low(ZxW + (YxX))
bx lr
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_SHL_LONG
dvmCompiler_TEMPLATE_SHL_LONG:
/* File: armv5te/TEMPLATE_SHL_LONG.S */
/*
* Long integer shift. This is different from the generic 32/64-bit
* binary operations because vAA/vBB are 64-bit but vCC (the shift
* distance) is 32-bit. Also, Dalvik requires us to ignore all but the low
* 6 bits.
*/
/* shl-long vAA, vBB, vCC */
and r2, r2, #63 @ r2<- r2 & 0x3f
mov r1, r1, asl r2 @ r1<- r1 << r2
rsb r3, r2, #32 @ r3<- 32 - r2
orr r1, r1, r0, lsr r3 @ r1<- r1 | (r0 << (32-r2))
subs ip, r2, #32 @ ip<- r2 - 32
movpl r1, r0, asl ip @ if r2 >= 32, r1<- r0 << (r2-32)
mov r0, r0, asl r2 @ r0<- r0 << r2
bx lr
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_SHR_LONG
dvmCompiler_TEMPLATE_SHR_LONG:
/* File: armv5te/TEMPLATE_SHR_LONG.S */
/*
* Long integer shift. This is different from the generic 32/64-bit
* binary operations because vAA/vBB are 64-bit but vCC (the shift
* distance) is 32-bit. Also, Dalvik requires us to ignore all but the low
* 6 bits.
*/
/* shr-long vAA, vBB, vCC */
and r2, r2, #63 @ r0<- r0 & 0x3f
mov r0, r0, lsr r2 @ r0<- r2 >> r2
rsb r3, r2, #32 @ r3<- 32 - r2
orr r0, r0, r1, asl r3 @ r0<- r0 | (r1 << (32-r2))
subs ip, r2, #32 @ ip<- r2 - 32
movpl r0, r1, asr ip @ if r2 >= 32, r0<-r1 >> (r2-32)
mov r1, r1, asr r2 @ r1<- r1 >> r2
bx lr
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_USHR_LONG
dvmCompiler_TEMPLATE_USHR_LONG:
/* File: armv5te/TEMPLATE_USHR_LONG.S */
/*
* Long integer shift. This is different from the generic 32/64-bit
* binary operations because vAA/vBB are 64-bit but vCC (the shift
* distance) is 32-bit. Also, Dalvik requires us to ignore all but the low
* 6 bits.
*/
/* ushr-long vAA, vBB, vCC */
and r2, r2, #63 @ r0<- r0 & 0x3f
mov r0, r0, lsr r2 @ r0<- r2 >> r2
rsb r3, r2, #32 @ r3<- 32 - r2
orr r0, r0, r1, asl r3 @ r0<- r0 | (r1 << (32-r2))
subs ip, r2, #32 @ ip<- r2 - 32
movpl r0, r1, lsr ip @ if r2 >= 32, r0<-r1 >>> (r2-32)
mov r1, r1, lsr r2 @ r1<- r1 >>> r2
bx lr
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_THROW_EXCEPTION_COMMON
dvmCompiler_TEMPLATE_THROW_EXCEPTION_COMMON:
/* File: armv5te/TEMPLATE_THROW_EXCEPTION_COMMON.S */
/*
* Throw an exception from JIT'ed code.
* On entry:
* r0 Dalvik PC that raises the exception
*/
b .LhandleException
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_MEM_OP_DECODE
dvmCompiler_TEMPLATE_MEM_OP_DECODE:
/* File: armv5te-vfp/TEMPLATE_MEM_OP_DECODE.S */
#if defined(WITH_SELF_VERIFICATION)
/*
* This handler encapsulates heap memory ops for selfVerification mode.
*
* The call to the handler is inserted prior to a heap memory operation.
* This handler then calls a function to decode the memory op, and process
* it accordingly. Afterwards, the handler changes the return address to
* skip the memory op so it never gets executed.
*/
vpush {d0-d15} @ save out all fp registers
push {r0-r12,lr} @ save out all registers
ldr r2, .LdvmSelfVerificationMemOpDecode @ defined in footer.S
mov r0, lr @ arg0 <- link register
mov r1, sp @ arg1 <- stack pointer
blx r2 @ decode and handle the mem op
pop {r0-r12,lr} @ restore all registers
vpop {d0-d15} @ restore all fp registers
bx lr @ return to compiled code
#endif
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_STRING_COMPARETO
dvmCompiler_TEMPLATE_STRING_COMPARETO:
/* File: armv5te/TEMPLATE_STRING_COMPARETO.S */
/*
* String's compareTo.
*
* Requires r0/r1 to have been previously checked for null. Will
* return negative if this's string is < comp, 0 if they are the
* same and positive if >.
*
* IMPORTANT NOTE:
*
* This code relies on hard-coded offsets for string objects, and must be
* kept in sync with definitions in UtfString.h. See asm-constants.h
*
* On entry:
* r0: this object pointer
* r1: comp object pointer
*
*/
mov r2, r0 @ this to r2, opening up r0 for return value
subs r0, r2, r1 @ Same?
bxeq lr
ldr r4, [r2, #STRING_FIELDOFF_OFFSET]
ldr r9, [r1, #STRING_FIELDOFF_OFFSET]
ldr r7, [r2, #STRING_FIELDOFF_COUNT]
ldr r10, [r1, #STRING_FIELDOFF_COUNT]
ldr r2, [r2, #STRING_FIELDOFF_VALUE]
ldr r1, [r1, #STRING_FIELDOFF_VALUE]
/*
* At this point, we have:
* value: r2/r1
* offset: r4/r9
* count: r7/r10
* We're going to compute
* r11 <- countDiff
* r10 <- minCount
*/
subs r11, r7, r10
movls r10, r7
/* Now, build pointers to the string data */
add r2, r2, r4, lsl #1
add r1, r1, r9, lsl #1
/*
* Note: data pointers point to previous element so we can use pre-index
* mode with base writeback.
*/
add r2, #16-2 @ offset to contents[-1]
add r1, #16-2 @ offset to contents[-1]
/*
* At this point we have:
* r2: *this string data
* r1: *comp string data
* r10: iteration count for comparison
* r11: value to return if the first part of the string is equal
* r0: reserved for result
* r3, r4, r7, r8, r9, r12 available for loading string data
*/
subs r10, #2
blt do_remainder2
/*
* Unroll the first two checks so we can quickly catch early mismatch
* on long strings (but preserve incoming alignment)
*/
ldrh r3, [r2, #2]!
ldrh r4, [r1, #2]!
ldrh r7, [r2, #2]!
ldrh r8, [r1, #2]!
subs r0, r3, r4
subeqs r0, r7, r8
bxne lr
cmp r10, #28
bgt do_memcmp16
subs r10, #3
blt do_remainder
loopback_triple:
ldrh r3, [r2, #2]!
ldrh r4, [r1, #2]!
ldrh r7, [r2, #2]!
ldrh r8, [r1, #2]!
ldrh r9, [r2, #2]!
ldrh r12,[r1, #2]!
subs r0, r3, r4
subeqs r0, r7, r8
subeqs r0, r9, r12
bxne lr
subs r10, #3
bge loopback_triple
do_remainder:
adds r10, #3
beq returnDiff
loopback_single:
ldrh r3, [r2, #2]!
ldrh r4, [r1, #2]!
subs r0, r3, r4
bxne lr
subs r10, #1
bne loopback_single
returnDiff:
mov r0, r11
bx lr
do_remainder2:
adds r10, #2
bne loopback_single
mov r0, r11
bx lr
/* Long string case */
do_memcmp16:
mov r4, lr
ldr lr, .Lmemcmp16
mov r7, r11
add r0, r2, #2
add r1, r1, #2
mov r2, r10
blx lr
cmp r0, #0
bxne r4
mov r0, r7
bx r4
.Lmemcmp16:
.word __memcmp16
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_STRING_INDEXOF
dvmCompiler_TEMPLATE_STRING_INDEXOF:
/* File: armv5te/TEMPLATE_STRING_INDEXOF.S */
/*
* String's indexOf.
*
* Requires r0 to have been previously checked for null. Will
* return index of match of r1 in r0.
*
* IMPORTANT NOTE:
*
* This code relies on hard-coded offsets for string objects, and must be
* kept in sync wth definitions in UtfString.h See asm-constants.h
*
* On entry:
* r0: string object pointer
* r1: char to match
* r2: Starting offset in string data
*/
ldr r3, [r0, #STRING_FIELDOFF_VALUE]
ldr r7, [r0, #STRING_FIELDOFF_OFFSET]
ldr r8, [r0, #STRING_FIELDOFF_COUNT]
/*
* At this point, we have:
* r1: char to match
* r2: starting offset
* r3: object pointer (final result -> r0)
* r7: offset
* r8: string length
*/
/* Build pointer to start of string data */
add r3, #16
add r0, r3, r7, lsl #1
/* Save a copy of starting data in r7 */
mov r7, r0
/* Clamp start to [0..count] */
cmp r2, #0
movlt r2, #0
cmp r2, r8
movgt r2, r8
/* Build pointer to start of data to compare and pre-bias */
add r0, r0, r2, lsl #1
sub r0, #2
/* Compute iteration count */
sub r8, r2
/*
* At this point we have:
* r0: start of data to test
* r1: chat to compare
* r8: iteration count
* r7: original start of string
* r3, r4, r9, r10, r11, r12 available for loading string data
*/
subs r8, #4
blt indexof_remainder
indexof_loop4:
ldrh r3, [r0, #2]!
ldrh r4, [r0, #2]!
ldrh r10, [r0, #2]!
ldrh r11, [r0, #2]!
cmp r3, r1
beq match_0
cmp r4, r1
beq match_1
cmp r10, r1
beq match_2
cmp r11, r1
beq match_3
subs r8, #4
bge indexof_loop4
indexof_remainder:
adds r8, #4
beq indexof_nomatch
indexof_loop1:
ldrh r3, [r0, #2]!
cmp r3, r1
beq match_3
subs r8, #1
bne indexof_loop1
indexof_nomatch:
mov r0, #-1
bx lr
match_0:
sub r0, #6
sub r0, r7
asr r0, r0, #1
bx lr
match_1:
sub r0, #4
sub r0, r7
asr r0, r0, #1
bx lr
match_2:
sub r0, #2
sub r0, r7
asr r0, r0, #1
bx lr
match_3:
sub r0, r7
asr r0, r0, #1
bx lr
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INTERPRET
dvmCompiler_TEMPLATE_INTERPRET:
/* File: armv5te/TEMPLATE_INTERPRET.S */
/*
* This handler transfers control to the interpeter without performing
* any lookups. It may be called either as part of a normal chaining
* operation, or from the transition code in header.S. We distinquish
* the two cases by looking at the link register. If called from a
* translation chain, it will point to the chaining Dalvik PC -3.
* On entry:
* lr - if NULL:
* r1 - the Dalvik PC to begin interpretation.
* else
* [lr, #3] contains Dalvik PC to begin interpretation
* rSELF - pointer to thread
* rFP - Dalvik frame pointer
*/
cmp lr, #0
#if defined(WORKAROUND_CORTEX_A9_745320)
/* Don't use conditional loads if the HW defect exists */
beq 101f
ldr r1,[lr, #3]
101:
#else
ldrne r1,[lr, #3]
#endif
ldr r2, .LinterpPunt
mov r0, r1 @ set Dalvik PC
bx r2
@ doesn't return
.LinterpPunt:
.word dvmJitToInterpPunt
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_MONITOR_ENTER
dvmCompiler_TEMPLATE_MONITOR_ENTER:
/* File: armv5te/TEMPLATE_MONITOR_ENTER.S */
/*
* Call out to the runtime to lock an object. Because this thread
* may have been suspended in THREAD_MONITOR state and the Jit's
* translation cache subsequently cleared, we cannot return directly.
* Instead, unconditionally transition to the interpreter to resume.
*
* On entry:
* r0 - self pointer
* r1 - the object (which has already been null-checked by the caller
* r4 - the Dalvik PC of the following instruction.
*/
ldr r2, .LdvmLockObject
mov r3, #0 @ Record that we're not returning
str r3, [r0, #offThread_inJitCodeCache]
blx r2 @ dvmLockObject(self, obj)
ldr r2, .LdvmJitToInterpNoChain
@ Bail to interpreter - no chain [note - r4 still contains rPC]
#if defined(WITH_JIT_TUNING)
mov r0, #kHeavyweightMonitor
#endif
bx r2
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_MONITOR_ENTER_DEBUG
dvmCompiler_TEMPLATE_MONITOR_ENTER_DEBUG:
/* File: armv5te/TEMPLATE_MONITOR_ENTER_DEBUG.S */
/*
* To support deadlock prediction, this version of MONITOR_ENTER
* will always call the heavyweight dvmLockObject, check for an
* exception and then bail out to the interpreter.
*
* On entry:
* r0 - self pointer
* r1 - the object (which has already been null-checked by the caller
* r4 - the Dalvik PC of the following instruction.
*
*/
ldr r2, .LdvmLockObject
mov r3, #0 @ Record that we're not returning
str r3, [r0, #offThread_inJitCodeCache]
blx r2 @ dvmLockObject(self, obj)
@ test for exception
ldr r1, [rSELF, #offThread_exception]
cmp r1, #0
beq 1f
ldr r2, .LhandleException
sub r0, r4, #2 @ roll dPC back to this monitor instruction
bx r2
1:
@ Bail to interpreter - no chain [note - r4 still contains rPC]
#if defined(WITH_JIT_TUNING)
mov r0, #kHeavyweightMonitor
#endif
ldr pc, .LdvmJitToInterpNoChain
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_PERIODIC_PROFILING
dvmCompiler_TEMPLATE_PERIODIC_PROFILING:
/* File: armv5te/TEMPLATE_PERIODIC_PROFILING.S */
/*
* Increment profile counter for this trace, and decrement
* sample counter. If sample counter goes below zero, turn
* off profiling.
*
* On entry
* (lr-11) is address of pointer to counter. Note: the counter
* actually exists 10 bytes before the return target, but because
* we are arriving from thumb mode, lr will have its low bit set.
*/
ldr r0, [lr,#-11]
ldr r1, [rSELF, #offThread_pProfileCountdown]
ldr r2, [r0] @ get counter
ldr r3, [r1] @ get countdown timer
add r2, #1
subs r2, #1
blt .LTEMPLATE_PERIODIC_PROFILING_disable_profiling
str r2, [r0]
str r3, [r1]
bx lr
.LTEMPLATE_PERIODIC_PROFILING_disable_profiling:
mov r4, lr @ preserve lr
ldr r0, .LdvmJitTraceProfilingOff
blx r0
bx r4
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_RETURN_PROF
dvmCompiler_TEMPLATE_RETURN_PROF:
/* File: armv5te/TEMPLATE_RETURN_PROF.S */
#define TEMPLATE_INLINE_PROFILING
/* File: armv5te/TEMPLATE_RETURN.S */
/*
* Unwind a frame from the Dalvik stack for compiled OP_RETURN_XXX.
* If the stored value in returnAddr
* is non-zero, the caller is compiled by the JIT thus return to the
* address in the code cache following the invoke instruction. Otherwise
* return to the special dvmJitToInterpNoChain entry point.
*/
#if defined(TEMPLATE_INLINE_PROFILING)
stmfd sp!, {r0-r2,lr} @ preserve live registers
mov r0, r6
@ r0=rSELF
ldr ip, .LdvmFastMethodTraceExit
blx ip
ldmfd sp!, {r0-r2,lr} @ restore live registers
#endif
SAVEAREA_FROM_FP(r0, rFP) @ r0<- saveArea (old)
ldr r10, [r0, #offStackSaveArea_prevFrame] @ r10<- saveArea->prevFrame
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
ldr rPC, [r0, #offStackSaveArea_savedPc] @ rPC<- saveArea->savedPc
ldr r2, [r10, #(offStackSaveArea_method - sizeofStackSaveArea)]
#if !defined(WITH_SELF_VERIFICATION)
ldr r9, [r0, #offStackSaveArea_returnAddr] @ r9<- chaining cell ret
#else
mov r9, #0 @ disable chaining
#endif
@ r2<- method we're returning to
cmp r2, #0 @ break frame?
#if !defined(WITH_SELF_VERIFICATION)
beq 1f @ bail to interpreter
#else
blxeq lr @ punt to interpreter and compare state
#endif
ldr r1, .LdvmJitToInterpNoChainNoProfile @ defined in footer.S
mov rFP, r10 @ publish new FP
ldr r10, [r2, #offMethod_clazz] @ r10<- method->clazz
str r2, [rSELF, #offThread_method]@ self->method = newSave->method
ldr r0, [r10, #offClassObject_pDvmDex] @ r0<- method->clazz->pDvmDex
str rFP, [rSELF, #offThread_curFrame] @ curFrame = fp
add rPC, rPC, #6 @ publish new rPC (advance 6 bytes)
str r0, [rSELF, #offThread_methodClassDex]
cmp r8, #0 @ check the break flags
movne r9, #0 @ clear the chaining cell address
str r9, [rSELF, #offThread_inJitCodeCache] @ in code cache or not
cmp r9, #0 @ chaining cell exists?
blxne r9 @ jump to the chaining cell
#if defined(WITH_JIT_TUNING)
mov r0, #kCallsiteInterpreted
#endif
mov pc, r1 @ callsite is interpreted
1:
mov r0, #0
str r0, [rSELF, #offThread_inJitCodeCache] @ reset inJitCodeCache
stmia rSELF, {rPC, rFP} @ SAVE_PC_FP_TO_SELF()
ldr r2, .LdvmMterpStdBail @ defined in footer.S
mov r0, rSELF @ Expecting rSELF in r0
blx r2 @ exit the interpreter
#undef TEMPLATE_INLINE_PROFILING
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_NO_OPT_PROF
dvmCompiler_TEMPLATE_INVOKE_METHOD_NO_OPT_PROF:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_NO_OPT_PROF.S */
#define TEMPLATE_INLINE_PROFILING
/* File: armv5te/TEMPLATE_INVOKE_METHOD_NO_OPT.S */
/*
* For polymorphic callsites - setup the Dalvik frame and load Dalvik PC
* into rPC then jump to dvmJitToInterpNoChain to dispatch the
* runtime-resolved callee.
*/
@ r0 = methodToCall, r1 = returnCell, rPC = dalvikCallsite
ldrh r7, [r0, #offMethod_registersSize] @ r7<- methodToCall->regsSize
ldrh r2, [r0, #offMethod_outsSize] @ r2<- methodToCall->outsSize
ldr r9, [rSELF, #offThread_interpStackEnd] @ r9<- interpStackEnd
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
add r3, r1, #1 @ Thumb addr is odd
SAVEAREA_FROM_FP(r1, rFP) @ r1<- stack save area
sub r1, r1, r7, lsl #2 @ r1<- newFp (old savearea - regsSize)
SAVEAREA_FROM_FP(r10, r1) @ r10<- stack save area
sub r10, r10, r2, lsl #2 @ r10<- bottom (newsave - outsSize)
cmp r10, r9 @ bottom < interpStackEnd?
bxlo lr @ return to raise stack overflow excep.
@ r1 = newFP, r0 = methodToCall, r3 = returnCell, rPC = dalvikCallsite
ldr r9, [r0, #offMethod_clazz] @ r9<- method->clazz
ldr r10, [r0, #offMethod_accessFlags] @ r10<- methodToCall->accessFlags
str rPC, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
str rPC, [r1, #(offStackSaveArea_savedPc - sizeofStackSaveArea)]
ldr rPC, [r0, #offMethod_insns] @ rPC<- methodToCall->insns
@ set up newSaveArea
str rFP, [r1, #(offStackSaveArea_prevFrame - sizeofStackSaveArea)]
str r3, [r1, #(offStackSaveArea_returnAddr - sizeofStackSaveArea)]
str r0, [r1, #(offStackSaveArea_method - sizeofStackSaveArea)]
cmp r8, #0 @ breakFlags != 0
bxne lr @ bail to the interpreter
tst r10, #ACC_NATIVE
#if !defined(WITH_SELF_VERIFICATION)
bne .LinvokeNative
#else
bxne lr @ bail to the interpreter
#endif
ldr r10, .LdvmJitToInterpTraceSelectNoChain
ldr r3, [r9, #offClassObject_pDvmDex] @ r3<- method->clazz->pDvmDex
@ Update "thread" values for the new method
str r0, [rSELF, #offThread_method] @ self->method = methodToCall
str r3, [rSELF, #offThread_methodClassDex] @ self->methodClassDex = ...
mov rFP, r1 @ fp = newFp
str rFP, [rSELF, #offThread_curFrame] @ curFrame = newFp
#if defined(TEMPLATE_INLINE_PROFILING)
stmfd sp!, {r0-r3} @ preserve r0-r3
mov r1, r6
@ r0=methodToCall, r1=rSELF
ldr ip, .LdvmFastMethodTraceEnter
blx ip
ldmfd sp!, {r0-r3} @ restore r0-r3
#endif
@ Start executing the callee
#if defined(WITH_JIT_TUNING)
mov r0, #kInlineCacheMiss
#endif
bx r10 @ dvmJitToInterpTraceSelectNoChain
#undef TEMPLATE_INLINE_PROFILING
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_CHAIN_PROF
dvmCompiler_TEMPLATE_INVOKE_METHOD_CHAIN_PROF:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_CHAIN_PROF.S */
#define TEMPLATE_INLINE_PROFILING
/* File: armv5te/TEMPLATE_INVOKE_METHOD_CHAIN.S */
/*
* For monomorphic callsite, setup the Dalvik frame and return to the
* Thumb code through the link register to transfer control to the callee
* method through a dedicated chaining cell.
*/
@ r0 = methodToCall, r1 = returnCell, r2 = methodToCall->outsSize
@ rPC = dalvikCallsite, r7 = methodToCall->registersSize
@ methodToCall is guaranteed to be non-native
.LinvokeChainProf:
ldr r9, [rSELF, #offThread_interpStackEnd] @ r9<- interpStackEnd
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
add r3, r1, #1 @ Thumb addr is odd
SAVEAREA_FROM_FP(r1, rFP) @ r1<- stack save area
sub r1, r1, r7, lsl #2 @ r1<- newFp (old savearea - regsSize)
SAVEAREA_FROM_FP(r10, r1) @ r10<- stack save area
add r12, lr, #2 @ setup the punt-to-interp address
sub r10, r10, r2, lsl #2 @ r10<- bottom (newsave - outsSize)
cmp r10, r9 @ bottom < interpStackEnd?
bxlo r12 @ return to raise stack overflow excep.
@ r1 = newFP, r0 = methodToCall, r3 = returnCell, rPC = dalvikCallsite
ldr r9, [r0, #offMethod_clazz] @ r9<- method->clazz
str rPC, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
str rPC, [r1, #(offStackSaveArea_savedPc - sizeofStackSaveArea)]
@ set up newSaveArea
str rFP, [r1, #(offStackSaveArea_prevFrame - sizeofStackSaveArea)]
str r3, [r1, #(offStackSaveArea_returnAddr - sizeofStackSaveArea)]
str r0, [r1, #(offStackSaveArea_method - sizeofStackSaveArea)]
cmp r8, #0 @ breakFlags != 0
bxne r12 @ bail to the interpreter
ldr r3, [r9, #offClassObject_pDvmDex] @ r3<- method->clazz->pDvmDex
@ Update "thread" values for the new method
str r0, [rSELF, #offThread_method] @ self->method = methodToCall
str r3, [rSELF, #offThread_methodClassDex] @ self->methodClassDex = ...
mov rFP, r1 @ fp = newFp
str rFP, [rSELF, #offThread_curFrame] @ curFrame = newFp
#if defined(TEMPLATE_INLINE_PROFILING)
stmfd sp!, {r0-r2,lr} @ preserve clobbered live registers
mov r1, r6
@ r0=methodToCall, r1=rSELF
ldr ip, .LdvmFastMethodTraceEnter
blx ip
ldmfd sp!, {r0-r2,lr} @ restore registers
#endif
bx lr @ return to the callee-chaining cell
#undef TEMPLATE_INLINE_PROFILING
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_PREDICTED_CHAIN_PROF
dvmCompiler_TEMPLATE_INVOKE_METHOD_PREDICTED_CHAIN_PROF:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_PREDICTED_CHAIN_PROF.S */
#define TEMPLATE_INLINE_PROFILING
/* File: armv5te/TEMPLATE_INVOKE_METHOD_PREDICTED_CHAIN.S */
/*
* For polymorphic callsite, check whether the cached class pointer matches
* the current one. If so setup the Dalvik frame and return to the
* Thumb code through the link register to transfer control to the callee
* method through a dedicated chaining cell.
*
* The predicted chaining cell is declared in ArmLIR.h with the
* following layout:
*
* typedef struct PredictedChainingCell {
* u4 branch;
* const ClassObject *clazz;
* const Method *method;
* u4 counter;
* } PredictedChainingCell;
*
* Upon returning to the callsite:
* - lr : to branch to the chaining cell
* - lr+2: to punt to the interpreter
* - lr+4: to fully resolve the callee and may rechain.
* r3 <- class
* r9 <- counter
*/
@ r0 = this, r1 = returnCell, r2 = predictedChainCell, rPC = dalvikCallsite
ldr r3, [r0, #offObject_clazz] @ r3 <- this->class
ldr r8, [r2, #4] @ r8 <- predictedChainCell->clazz
ldr r0, [r2, #8] @ r0 <- predictedChainCell->method
ldr r9, [rSELF, #offThread_icRechainCount] @ r1 <- shared rechainCount
cmp r3, r8 @ predicted class == actual class?
#if defined(WITH_JIT_TUNING)
ldr r7, .LdvmICHitCount
#if defined(WORKAROUND_CORTEX_A9_745320)
/* Don't use conditional loads if the HW defect exists */
bne 101f
ldr r10, [r7, #0]
101:
#else
ldreq r10, [r7, #0]
#endif
add r10, r10, #1
streq r10, [r7, #0]
#endif
ldreqh r7, [r0, #offMethod_registersSize] @ r7<- methodToCall->regsSize
ldreqh r2, [r0, #offMethod_outsSize] @ r2<- methodToCall->outsSize
beq .LinvokeChainProf @ predicted chain is valid
ldr r7, [r3, #offClassObject_vtable] @ r7 <- this->class->vtable
cmp r8, #0 @ initialized class or not
moveq r1, #0
subne r1, r9, #1 @ count--
strne r1, [rSELF, #offThread_icRechainCount] @ write back to thread
add lr, lr, #4 @ return to fully-resolve landing pad
/*
* r1 <- count
* r2 <- &predictedChainCell
* r3 <- this->class
* r4 <- dPC
* r7 <- this->class->vtable
*/
bx lr
#undef TEMPLATE_INLINE_PROFILING
/* ------------------------------ */
.balign 4
.global dvmCompiler_TEMPLATE_INVOKE_METHOD_NATIVE_PROF
dvmCompiler_TEMPLATE_INVOKE_METHOD_NATIVE_PROF:
/* File: armv5te/TEMPLATE_INVOKE_METHOD_NATIVE_PROF.S */
#define TEMPLATE_INLINE_PROFILING
/* File: armv5te/TEMPLATE_INVOKE_METHOD_NATIVE.S */
@ r0 = methodToCall, r1 = returnCell, rPC = dalvikCallsite
@ r7 = methodToCall->registersSize
ldr r9, [rSELF, #offThread_interpStackEnd] @ r9<- interpStackEnd
ldrb r8, [rSELF, #offThread_breakFlags] @ r8<- breakFlags
add r3, r1, #1 @ Thumb addr is odd
SAVEAREA_FROM_FP(r1, rFP) @ r1<- stack save area
sub r1, r1, r7, lsl #2 @ r1<- newFp (old savearea - regsSize)
SAVEAREA_FROM_FP(r10, r1) @ r10<- stack save area
cmp r10, r9 @ bottom < interpStackEnd?
bxlo lr @ return to raise stack overflow excep.
@ r1 = newFP, r0 = methodToCall, r3 = returnCell, rPC = dalvikCallsite
str rPC, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
str rPC, [r1, #(offStackSaveArea_savedPc - sizeofStackSaveArea)]
@ set up newSaveArea
str rFP, [r1, #(offStackSaveArea_prevFrame - sizeofStackSaveArea)]
str r3, [r1, #(offStackSaveArea_returnAddr - sizeofStackSaveArea)]
str r0, [r1, #(offStackSaveArea_method - sizeofStackSaveArea)]
cmp r8, #0 @ breakFlags != 0
ldr r8, [r0, #offMethod_nativeFunc] @ r8<- method->nativeFunc
#if !defined(WITH_SELF_VERIFICATION)
bxne lr @ bail to the interpreter
#else
bx lr @ bail to interpreter unconditionally
#endif
@ go ahead and transfer control to the native code
ldr r9, [rSELF, #offThread_jniLocal_topCookie]@r9<-thread->localRef->...
mov r2, #0
str r1, [rSELF, #offThread_curFrame] @ curFrame = newFp
str r2, [rSELF, #offThread_inJitCodeCache] @ not in the jit code cache
str r9, [r1, #(offStackSaveArea_localRefCookie - sizeofStackSaveArea)]
@ newFp->localRefCookie=top
SAVEAREA_FROM_FP(r10, r1) @ r10<- new stack save area
mov r2, r0 @ arg2<- methodToCall
mov r0, r1 @ arg0<- newFP
add r1, rSELF, #offThread_retval @ arg1<- &retval
mov r3, rSELF @ arg3<- self
#if defined(TEMPLATE_INLINE_PROFILING)
@ r2=methodToCall, r6=rSELF
stmfd sp!, {r2,r6} @ to be consumed after JNI return
stmfd sp!, {r0-r3} @ preserve r0-r3
mov r0, r2
mov r1, r6
@ r0=JNIMethod, r1=rSELF
ldr ip, .LdvmFastMethodTraceEnter
blx ip
ldmfd sp!, {r0-r3} @ restore r0-r3
#endif
blx r8 @ off to the native code
#if defined(TEMPLATE_INLINE_PROFILING)
ldmfd sp!, {r0-r1} @ restore r2 and r6
@ r0=JNIMethod, r1=rSELF
ldr ip, .LdvmFastNativeMethodTraceExit
blx ip
#endif
@ native return; r10=newSaveArea
@ equivalent to dvmPopJniLocals
ldr r2, [r10, #offStackSaveArea_returnAddr] @ r2 = chaining cell ret
ldr r0, [r10, #offStackSaveArea_localRefCookie] @ r0<- saved->top
ldr r1, [rSELF, #offThread_exception] @ check for exception
str rFP, [rSELF, #offThread_curFrame] @ curFrame = fp
cmp r1, #0 @ null?
str r0, [rSELF, #offThread_jniLocal_topCookie] @ new top <- old top
ldr r0, [rFP, #(offStackSaveArea_currentPc - sizeofStackSaveArea)]
@ r0 = dalvikCallsitePC
bne .LhandleException @ no, handle exception
str r2, [rSELF, #offThread_inJitCodeCache] @ set the mode properly
cmp r2, #0 @ return chaining cell still exists?
bxne r2 @ yes - go ahead
@ continue executing the next instruction through the interpreter
ldr r1, .LdvmJitToInterpTraceSelectNoChain @ defined in footer.S
add rPC, r0, #6 @ reconstruct new rPC (advance 6 bytes)
#if defined(WITH_JIT_TUNING)
mov r0, #kCallsiteInterpreted
#endif
mov pc, r1
#undef TEMPLATE_INLINE_PROFILING
.size dvmCompilerTemplateStart, .-dvmCompilerTemplateStart
/* File: armv5te/footer.S */
/*
* ===========================================================================
* Common subroutines and data
* ===========================================================================
*/
.section .data.rel.ro
.align 2
.LinvokeNative:
@ Prep for the native call
@ r1 = newFP, r0 = methodToCall
mov r2, #0
ldr r9, [rSELF, #offThread_jniLocal_topCookie]@r9<-thread->localRef->...
str r2, [rSELF, #offThread_inJitCodeCache] @ not in jit code cache
str r1, [rSELF, #offThread_curFrame] @ curFrame = newFp
str r9, [r1, #(offStackSaveArea_localRefCookie - sizeofStackSaveArea)]
@ newFp->localRefCookie=top
ldrh lr, [rSELF, #offThread_subMode]
SAVEAREA_FROM_FP(r10, r1) @ r10<- new stack save area
mov r2, r0 @ r2<- methodToCall
mov r0, r1 @ r0<- newFP
add r1, rSELF, #offThread_retval @ r1<- &retval
mov r3, rSELF @ arg3<- self
ands lr, #kSubModeMethodTrace
beq 121f @ hop if not profiling
@ r2: methodToCall, r6: rSELF
stmfd sp!, {r2,r6}
stmfd sp!, {r0-r3}
mov r0, r2
mov r1, r6
ldr ip, .LdvmFastMethodTraceEnter
blx ip
ldmfd sp!, {r0-r3}
ldr ip, [r2, #offMethod_nativeFunc]
blx ip
ldmfd sp!, {r0-r1}
ldr ip, .LdvmFastNativeMethodTraceExit
blx ip
b 212f
121:
ldr ip, [r2, #offMethod_nativeFunc]
blx ip
212:
@ native return; r10=newSaveArea
@ equivalent to dvmPopJniLocals
ldr r2, [r10, #offStackSaveArea_returnAddr] @ r2 = chaining cell ret
ldr r0, [r10, #offStackSaveArea_localRefCookie] @ r0<- saved->top
ldr r1, [rSELF, #offThread_exception] @ check for exception
str rFP, [rSELF, #offThread_curFrame] @ curFrame = fp
cmp r1, #0 @ null?
str r0, [rSELF, #offThread_jniLocal_topCookie] @ new top <- old top
ldr r0, [r10, #offStackSaveArea_savedPc] @ reload rPC
@ r0 = dalvikCallsitePC
bne .LhandleException @ no, handle exception
str r2, [rSELF, #offThread_inJitCodeCache] @ set the new mode
cmp r2, #0 @ return chaining cell still exists?
bxne r2 @ yes - go ahead
@ continue executing the next instruction through the interpreter
ldr r1, .LdvmJitToInterpTraceSelectNoChain @ defined in footer.S
add rPC, r0, #6 @ reconstruct new rPC (advance 6 bytes)
#if defined(WITH_JIT_TUNING)
mov r0, #kCallsiteInterpreted
#endif
bx r1
/*
* On entry:
* r0 Faulting Dalvik PC
*/
.LhandleException:
#if defined(WITH_SELF_VERIFICATION)
ldr pc, .LdeadFood @ should not see this under self-verification mode
.LdeadFood:
.word 0xdeadf00d
#endif
mov r2, #0
str r2, [rSELF, #offThread_inJitCodeCache] @ in interpreter land
ldr r1, .LdvmMterpCommonExceptionThrown @ PIC way of getting &func
ldr rIBASE, .LdvmAsmInstructionStart @ same as above
mov rPC, r0 @ reload the faulting Dalvik address
bx r1 @ branch to dvmMterpCommonExceptionThrown
.align 2
.LdvmAsmInstructionStart:
.word dvmAsmInstructionStart
.LdvmJitToInterpNoChainNoProfile:
.word dvmJitToInterpNoChainNoProfile
.LdvmJitToInterpTraceSelectNoChain:
.word dvmJitToInterpTraceSelectNoChain
.LdvmJitToInterpNoChain:
.word dvmJitToInterpNoChain
.LdvmMterpStdBail:
.word dvmMterpStdBail
.LdvmMterpCommonExceptionThrown:
.word dvmMterpCommonExceptionThrown
.LdvmLockObject:
.word dvmLockObject
.LdvmJitTraceProfilingOff:
.word dvmJitTraceProfilingOff
#if defined(WITH_JIT_TUNING)
.LdvmICHitCount:
.word gDvmICHitCount
#endif
#if defined(WITH_SELF_VERIFICATION)
.LdvmSelfVerificationMemOpDecode:
.word dvmSelfVerificationMemOpDecode
#endif
.LdvmFastMethodTraceEnter:
.word dvmFastMethodTraceEnter
.LdvmFastNativeMethodTraceExit:
.word dvmFastNativeMethodTraceExit
.LdvmFastMethodTraceExit:
.word dvmFastMethodTraceExit
.L__aeabi_cdcmple:
.word __aeabi_cdcmple
.L__aeabi_cfcmple:
.word __aeabi_cfcmple
.global dvmCompilerTemplateEnd
dvmCompilerTemplateEnd:
#endif /* WITH_JIT */