| /* |
| * Copyright (C) 2012 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. |
| */ |
| |
| #include "asm_support.h" |
| |
| #if defined(__APPLE__) |
| // Mac OS' as(1) doesn't let you name macro parameters. |
| #define MACRO0(macro_name) .macro macro_name |
| #define MACRO1(macro_name, macro_arg1) .macro macro_name |
| #define MACRO2(macro_name, macro_arg1, macro_args2) .macro macro_name |
| #define MACRO3(macro_name, macro_arg1, macro_args2, macro_args3) .macro macro_name |
| #define END_MACRO .endmacro |
| |
| // Mac OS' as(1) uses $0, $1, and so on for macro arguments, and function names |
| // are mangled with an extra underscore prefix. The use of $x for arguments |
| // mean that literals need to be represented with $$x in macros. |
| #define SYMBOL(name) _ ## name |
| #define VAR(name,index) SYMBOL($index) |
| #define REG_VAR(name,index) %$index |
| #define CALL_MACRO(name,index) $index |
| #define LITERAL(value) $value |
| #define MACRO_LITERAL(value) $$value |
| #else |
| // Regular gas(1) lets you name macro parameters. |
| #define MACRO0(macro_name) .macro macro_name |
| #define MACRO1(macro_name, macro_arg1) .macro macro_name macro_arg1 |
| #define MACRO2(macro_name, macro_arg1, macro_arg2) .macro macro_name macro_arg1, macro_arg2 |
| #define MACRO3(macro_name, macro_arg1, macro_arg2, macro_arg3) .macro macro_name macro_arg1, macro_arg2, macro_arg3 |
| #define END_MACRO .endm |
| |
| // Regular gas(1) uses \argument_name for macro arguments. |
| // We need to turn on alternate macro syntax so we can use & instead or the preprocessor |
| // will screw us by inserting a space between the \ and the name. Even in this mode there's |
| // no special meaning to $, so literals are still just $x. The use of altmacro means % is a |
| // special character meaning care needs to be taken when passing registers as macro arguments. |
| .altmacro |
| #define SYMBOL(name) name |
| #define VAR(name,index) name& |
| #define REG_VAR(name,index) %name |
| #define CALL_MACRO(name,index) name& |
| #define LITERAL(value) $value |
| #define MACRO_LITERAL(value) $value |
| #endif |
| |
| /* Cache alignment for function entry */ |
| MACRO0(ALIGN_FUNCTION_ENTRY) |
| .balign 16 |
| END_MACRO |
| |
| MACRO1(DEFINE_FUNCTION, c_name) |
| .type VAR(c_name, 0), @function |
| .globl VAR(c_name, 0) |
| ALIGN_FUNCTION_ENTRY |
| VAR(c_name, 0): |
| .cfi_startproc |
| END_MACRO |
| |
| MACRO1(END_FUNCTION, c_name) |
| .cfi_endproc |
| .size \c_name, .-\c_name |
| END_MACRO |
| |
| MACRO1(PUSH, reg) |
| pushl REG_VAR(reg, 0) |
| .cfi_adjust_cfa_offset 4 |
| .cfi_rel_offset REG_VAR(reg, 0), 0 |
| END_MACRO |
| |
| MACRO1(POP, reg) |
| popl REG_VAR(reg,0) |
| .cfi_adjust_cfa_offset -4 |
| .cfi_restore REG_VAR(reg,0) |
| END_MACRO |
| |
| /* |
| * Macro that sets up the callee save frame to conform with |
| * Runtime::CreateCalleeSaveMethod(kSaveAll) |
| */ |
| MACRO0(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME) |
| PUSH edi // Save callee saves (ebx is saved/restored by the upcall) |
| PUSH esi |
| PUSH ebp |
| subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method* |
| .cfi_adjust_cfa_offset 16 |
| END_MACRO |
| |
| /* |
| * Macro that sets up the callee save frame to conform with |
| * Runtime::CreateCalleeSaveMethod(kRefsOnly) |
| */ |
| MACRO0(SETUP_REF_ONLY_CALLEE_SAVE_FRAME) |
| PUSH edi // Save callee saves (ebx is saved/restored by the upcall) |
| PUSH esi |
| PUSH ebp |
| subl MACRO_LITERAL(16), %esp // Grow stack by 4 words, bottom word will hold Method* |
| .cfi_adjust_cfa_offset 16 |
| END_MACRO |
| |
| MACRO0(RESTORE_REF_ONLY_CALLEE_SAVE_FRAME) |
| addl MACRO_LITERAL(28), %esp // Unwind stack up to return address |
| .cfi_adjust_cfa_offset -28 |
| END_MACRO |
| |
| /* |
| * Macro that sets up the callee save frame to conform with |
| * Runtime::CreateCalleeSaveMethod(kRefsAndArgs) |
| */ |
| MACRO0(SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME) |
| PUSH edi // Save callee saves |
| PUSH esi |
| PUSH ebp |
| PUSH ebx // Save args |
| PUSH edx |
| PUSH ecx |
| PUSH eax // Align stack, eax will be clobbered by Method* |
| END_MACRO |
| |
| MACRO0(RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME) |
| addl MACRO_LITERAL(4), %esp // Remove padding |
| .cfi_adjust_cfa_offset -4 |
| POP ecx // Restore args except eax |
| POP edx |
| POP ebx |
| POP ebp // Restore callee saves |
| POP esi |
| POP edi |
| END_MACRO |
| |
| /* |
| * Macro that set calls through to artDeliverPendingExceptionFromCode, where the pending |
| * exception is Thread::Current()->exception_. |
| */ |
| MACRO0(DELIVER_PENDING_EXCEPTION) |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save callee saves for throw |
| mov %esp, %ecx |
| // Outgoing argument set up |
| subl MACRO_LITERAL(8), %esp // Alignment padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH ecx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| call SYMBOL(artDeliverPendingExceptionFromCode) // artDeliverPendingExceptionFromCode(Thread*, SP) |
| int3 // unreached |
| END_MACRO |
| |
| MACRO2(NO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context |
| mov %esp, %ecx |
| // Outgoing argument set up |
| subl MACRO_LITERAL(8), %esp // alignment padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH ecx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| call VAR(cxx_name, 1) // cxx_name(Thread*, SP) |
| int3 // unreached |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| MACRO2(ONE_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context |
| mov %esp, %ecx |
| // Outgoing argument set up |
| PUSH eax // alignment padding |
| PUSH ecx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH eax // pass arg1 |
| call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP) |
| int3 // unreached |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| MACRO2(TWO_ARG_RUNTIME_EXCEPTION, c_name, cxx_name) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| SETUP_SAVE_ALL_CALLEE_SAVE_FRAME // save all registers as basis for long jump context |
| mov %esp, %edx |
| // Outgoing argument set up |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH ecx // pass arg2 |
| PUSH eax // pass arg1 |
| call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP) |
| int3 // unreached |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| /* |
| * Called by managed code to create and deliver a NullPointerException. |
| */ |
| NO_ARG_RUNTIME_EXCEPTION art_quick_throw_null_pointer_exception_from_code, artThrowNullPointerExceptionFromCode |
| |
| /* |
| * Called by managed code to create and deliver an ArithmeticException. |
| */ |
| NO_ARG_RUNTIME_EXCEPTION art_quick_throw_div_zero_from_code, artThrowDivZeroFromCode |
| |
| /* |
| * Called by managed code to create and deliver a StackOverflowError. |
| */ |
| NO_ARG_RUNTIME_EXCEPTION art_quick_throw_stack_overflow_from_code, artThrowStackOverflowFromCode |
| |
| /* |
| * Called by managed code, saves callee saves and then calls artThrowException |
| * that will place a mock Method* at the bottom of the stack. Arg1 holds the exception. |
| */ |
| ONE_ARG_RUNTIME_EXCEPTION art_quick_deliver_exception_from_code, artDeliverExceptionFromCode |
| |
| /* |
| * Called by managed code to create and deliver a NoSuchMethodError. |
| */ |
| ONE_ARG_RUNTIME_EXCEPTION art_quick_throw_no_such_method_from_code, artThrowNoSuchMethodFromCode |
| |
| /* |
| * Called by managed code to create and deliver an ArrayIndexOutOfBoundsException. Arg1 holds |
| * index, arg2 holds limit. |
| */ |
| TWO_ARG_RUNTIME_EXCEPTION art_quick_throw_array_bounds_from_code, artThrowArrayBoundsFromCode |
| |
| /* |
| * All generated callsites for interface invokes and invocation slow paths will load arguments |
| * as usual - except instead of loading arg0/r0 with the target Method*, arg0/r0 will contain |
| * the method_idx. This wrapper will save arg1-arg3, load the caller's Method*, align the |
| * stack and call the appropriate C helper. |
| * NOTE: "this" is first visible argument of the target, and so can be found in arg1/r1. |
| * |
| * The helper will attempt to locate the target and return a 64-bit result in r0/r1 consisting |
| * of the target Method* in r0 and method->code_ in r1. |
| * |
| * If unsuccessful, the helper will return NULL/NULL. There will bea pending exception in the |
| * thread and we branch to another stub to deliver it. |
| * |
| * On success this wrapper will restore arguments and *jump* to the target, leaving the lr |
| * pointing back to the original caller. |
| */ |
| MACRO2(INVOKE_TRAMPOLINE, c_name, cxx_name) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| // Set up the callee save frame to conform with Runtime::CreateCalleeSaveMethod(kRefsAndArgs) |
| // return address |
| PUSH edi |
| PUSH esi |
| PUSH ebp |
| PUSH ebx |
| PUSH edx |
| PUSH ecx |
| PUSH eax // <-- callee save Method* to go here |
| movl %esp, %edx // remember SP |
| // Outgoing argument set up |
| subl MACRO_LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| pushl 32(%edx) // pass caller Method* |
| .cfi_adjust_cfa_offset 4 |
| PUSH ecx // pass arg2 |
| PUSH eax // pass arg1 |
| call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP) |
| movl %edx, %edi // save code pointer in EDI |
| addl MACRO_LITERAL(36), %esp // Pop arguments skip eax |
| .cfi_adjust_cfa_offset -36 |
| POP ecx // Restore args |
| POP edx |
| POP ebx |
| POP ebp // Restore callee saves. |
| POP esi |
| // Swap EDI callee save with code pointer. |
| xchgl %edi, (%esp) |
| testl %eax, %eax // Branch forward if exception pending. |
| jz 1f |
| // Tail call to intended method. |
| ret |
| 1: |
| addl MACRO_LITERAL(4), %esp // Pop code pointer off stack |
| .cfi_adjust_cfa_offset -4 |
| DELIVER_PENDING_EXCEPTION |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline, artInvokeInterfaceTrampoline |
| INVOKE_TRAMPOLINE art_quick_invoke_interface_trampoline_with_access_check, artInvokeInterfaceTrampolineWithAccessCheck |
| |
| INVOKE_TRAMPOLINE art_quick_invoke_static_trampoline_with_access_check, artInvokeStaticTrampolineWithAccessCheck |
| INVOKE_TRAMPOLINE art_quick_invoke_direct_trampoline_with_access_check, artInvokeDirectTrampolineWithAccessCheck |
| INVOKE_TRAMPOLINE art_quick_invoke_super_trampoline_with_access_check, artInvokeSuperTrampolineWithAccessCheck |
| INVOKE_TRAMPOLINE art_quick_invoke_virtual_trampoline_with_access_check, artInvokeVirtualTrampolineWithAccessCheck |
| |
| MACRO3(NO_ARG_DOWNCALL, c_name, cxx_name, return_macro) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %edx // remember SP |
| // Outgoing argument set up |
| subl MACRO_LITERAL(8), %esp // push padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| call VAR(cxx_name, 1) // cxx_name(Thread*, SP) |
| addl MACRO_LITERAL(16), %esp // pop arguments |
| .cfi_adjust_cfa_offset -16 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| CALL_MACRO(return_macro, 2) // return or deliver exception |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| MACRO3(ONE_ARG_DOWNCALL, c_name, cxx_name, return_macro) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %edx // remember SP |
| // Outgoing argument set up |
| PUSH eax // push padding |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH eax // pass arg1 |
| call VAR(cxx_name, 1) // cxx_name(arg1, Thread*, SP) |
| addl MACRO_LITERAL(16), %esp // pop arguments |
| .cfi_adjust_cfa_offset -16 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| CALL_MACRO(return_macro, 2) // return or deliver exception |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| MACRO3(TWO_ARG_DOWNCALL, c_name, cxx_name, return_macro) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %edx // remember SP |
| // Outgoing argument set up |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH ecx // pass arg2 |
| PUSH eax // pass arg1 |
| call VAR(cxx_name, 1) // cxx_name(arg1, arg2, Thread*, SP) |
| addl MACRO_LITERAL(16), %esp // pop arguments |
| .cfi_adjust_cfa_offset -16 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| CALL_MACRO(return_macro, 2) // return or deliver exception |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| MACRO3(THREE_ARG_DOWNCALL, c_name, cxx_name, return_macro) |
| DEFINE_FUNCTION VAR(c_name, 0) |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| // Outgoing argument set up |
| subl MACRO_LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // pass arg3 |
| PUSH ecx // pass arg2 |
| PUSH eax // pass arg1 |
| call VAR(cxx_name, 1) // cxx_name(arg1, arg2, arg3, Thread*, SP) |
| addl MACRO_LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| CALL_MACRO(return_macro, 2) // return or deliver exception |
| END_FUNCTION VAR(c_name, 0) |
| END_MACRO |
| |
| MACRO0(RETURN_IF_EAX_NOT_ZERO) |
| testl %eax, %eax // eax == 0 ? |
| jz 1f // if eax == 0 goto 1 |
| ret // return |
| 1: // deliver exception on current thread |
| DELIVER_PENDING_EXCEPTION |
| END_MACRO |
| |
| MACRO0(RETURN_IF_EAX_ZERO) |
| testl %eax, %eax // eax == 0 ? |
| jnz 1f // if eax != 0 goto 1 |
| ret // return |
| 1: // deliver exception on current thread |
| DELIVER_PENDING_EXCEPTION |
| END_MACRO |
| |
| MACRO0(RETURN_OR_DELIVER_PENDING_EXCEPTION) |
| mov %fs:THREAD_EXCEPTION_OFFSET, %ebx // get exception field |
| testl %ebx, %ebx // ebx == 0 ? |
| jnz 1f // if ebx != 0 goto 1 |
| ret // return |
| 1: // deliver exception on current thread |
| DELIVER_PENDING_EXCEPTION |
| END_MACRO |
| |
| TWO_ARG_DOWNCALL art_quick_alloc_object_from_code, artAllocObjectFromCode, RETURN_IF_EAX_NOT_ZERO |
| TWO_ARG_DOWNCALL art_quick_alloc_object_from_code_with_access_check, artAllocObjectFromCodeWithAccessCheck, RETURN_IF_EAX_NOT_ZERO |
| THREE_ARG_DOWNCALL art_quick_alloc_array_from_code, artAllocArrayFromCode, RETURN_IF_EAX_NOT_ZERO |
| THREE_ARG_DOWNCALL art_quick_alloc_array_from_code_with_access_check, artAllocArrayFromCodeWithAccessCheck, RETURN_IF_EAX_NOT_ZERO |
| THREE_ARG_DOWNCALL art_quick_check_and_alloc_array_from_code, artCheckAndAllocArrayFromCode, RETURN_IF_EAX_NOT_ZERO |
| THREE_ARG_DOWNCALL art_quick_check_and_alloc_array_from_code_with_access_check, artCheckAndAllocArrayFromCodeWithAccessCheck, RETURN_IF_EAX_NOT_ZERO |
| |
| TWO_ARG_DOWNCALL art_quick_resolve_string_from_code, artResolveStringFromCode, RETURN_IF_EAX_NOT_ZERO |
| TWO_ARG_DOWNCALL art_quick_initialize_static_storage_from_code, artInitializeStaticStorageFromCode, RETURN_IF_EAX_NOT_ZERO |
| TWO_ARG_DOWNCALL art_quick_initialize_type_from_code, artInitializeTypeFromCode, RETURN_IF_EAX_NOT_ZERO |
| TWO_ARG_DOWNCALL art_quick_initialize_type_and_verify_access_from_code, artInitializeTypeAndVerifyAccessFromCode, RETURN_IF_EAX_NOT_ZERO |
| |
| /* |
| * On entry, eax and ecx must be preserved, edx is dex PC |
| */ |
| DEFINE_FUNCTION art_quick_update_debugger |
| mov %eax, %ebx // stash away eax so that it's saved as if it were an argument |
| SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| subl LITERAL(4), %esp // alignment padding |
| .cfi_adjust_cfa_offset 4 |
| PUSH esp // pass arg2 (sp) |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // pass arg0 (dex pc) |
| call SYMBOL(artUpdateDebuggerFromCode) // artUpdateDebuggerFromCode(int32_t, Thread*, Method**) |
| addl LITERAL(16), %esp // pop arguments |
| .cfi_adjust_cfa_offset -16 |
| RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME |
| mov %ebx, %eax // restore original eax |
| ret |
| END_FUNCTION art_quick_update_debugger |
| |
| ONE_ARG_DOWNCALL art_quick_lock_object_from_code, artLockObjectFromCode, ret |
| ONE_ARG_DOWNCALL art_quick_unlock_object_from_code, artUnlockObjectFromCode, RETURN_IF_EAX_ZERO |
| |
| TWO_ARG_DOWNCALL art_quick_handle_fill_data_from_code, artHandleFillArrayDataFromCode, RETURN_IF_EAX_ZERO |
| |
| DEFINE_FUNCTION art_quick_is_assignable_from_code |
| PUSH eax // alignment padding |
| PUSH ecx // pass arg2 |
| PUSH eax // pass arg1 |
| call SYMBOL(artIsAssignableFromCode) // (Class* a, Class* b, Thread*, SP) |
| addl LITERAL(12), %esp // pop arguments |
| .cfi_adjust_cfa_offset -12 |
| ret |
| END_FUNCTION art_quick_is_assignable_from_code |
| |
| DEFINE_FUNCTION art_quick_memcpy |
| PUSH edx // pass arg3 |
| PUSH ecx // pass arg2 |
| PUSH eax // pass arg1 |
| call SYMBOL(memcpy) // (void*, const void*, size_t) |
| addl LITERAL(12), %esp // pop arguments |
| .cfi_adjust_cfa_offset -12 |
| ret |
| END_FUNCTION art_quick_memcpy |
| |
| TWO_ARG_DOWNCALL art_quick_check_cast_from_code, artCheckCastFromCode, RETURN_IF_EAX_ZERO |
| TWO_ARG_DOWNCALL art_quick_can_put_array_element_from_code, artCanPutArrayElementFromCode, RETURN_IF_EAX_ZERO |
| |
| NO_ARG_DOWNCALL art_quick_test_suspend, artTestSuspendFromCode, ret |
| |
| DEFINE_FUNCTION art_quick_fmod_from_code |
| subl LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass arg4 b.hi |
| PUSH edx // pass arg3 b.lo |
| PUSH ecx // pass arg2 a.hi |
| PUSH eax // pass arg1 a.lo |
| call SYMBOL(fmod) // (jdouble a, jdouble b) |
| fstpl (%esp) // pop return value off fp stack |
| movsd (%esp), %xmm0 // place into %xmm0 |
| addl LITERAL(28), %esp // pop arguments |
| .cfi_adjust_cfa_offset -28 |
| ret |
| END_FUNCTION art_quick_fmod_from_code |
| |
| DEFINE_FUNCTION art_quick_fmodf_from_code |
| PUSH eax // alignment padding |
| PUSH ecx // pass arg2 b |
| PUSH eax // pass arg1 a |
| call SYMBOL(fmodf) // (jfloat a, jfloat b) |
| fstps (%esp) // pop return value off fp stack |
| movss (%esp), %xmm0 // place into %xmm0 |
| addl LITERAL(12), %esp // pop arguments |
| .cfi_adjust_cfa_offset -12 |
| ret |
| END_FUNCTION art_quick_fmodf_from_code |
| |
| DEFINE_FUNCTION art_quick_l2d_from_code |
| PUSH ecx // push arg2 a.hi |
| PUSH eax // push arg1 a.lo |
| fildll (%esp) // load as integer and push into st0 |
| fstpl (%esp) // pop value off fp stack as double |
| movsd (%esp), %xmm0 // place into %xmm0 |
| addl LITERAL(8), %esp // pop arguments |
| .cfi_adjust_cfa_offset -8 |
| ret |
| END_FUNCTION art_quick_l2d_from_code |
| |
| DEFINE_FUNCTION art_quick_l2f_from_code |
| PUSH ecx // push arg2 a.hi |
| PUSH eax // push arg1 a.lo |
| fildll (%esp) // load as integer and push into st0 |
| fstps (%esp) // pop value off fp stack as a single |
| movss (%esp), %xmm0 // place into %xmm0 |
| addl LITERAL(8), %esp // pop argument |
| .cfi_adjust_cfa_offset -8 |
| ret |
| END_FUNCTION art_quick_l2f_from_code |
| |
| DEFINE_FUNCTION art_quick_d2l_from_code |
| PUSH eax // alignment padding |
| PUSH ecx // pass arg2 a.hi |
| PUSH eax // pass arg1 a.lo |
| call SYMBOL(art_d2l) // (jdouble a) |
| addl LITERAL(12), %esp // pop arguments |
| .cfi_adjust_cfa_offset -12 |
| ret |
| END_FUNCTION art_quick_d2l_from_code |
| |
| DEFINE_FUNCTION art_quick_f2l_from_code |
| subl LITERAL(8), %esp // alignment padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH eax // pass arg1 a |
| call SYMBOL(art_f2l) // (jfloat a) |
| addl LITERAL(12), %esp // pop arguments |
| .cfi_adjust_cfa_offset -12 |
| ret |
| END_FUNCTION art_quick_f2l_from_code |
| |
| DEFINE_FUNCTION art_quick_idivmod_from_code |
| cmpl LITERAL(0x80000000), %eax |
| je check_arg2 // special case |
| args_ok: |
| cdq // edx:eax = sign extend eax |
| idiv %ecx // (edx,eax) = (edx:eax % ecx, edx:eax / ecx) |
| ret |
| check_arg2: |
| cmpl LITERAL(-1), %ecx |
| jne args_ok |
| xorl %edx, %edx |
| ret // eax already holds min int |
| END_FUNCTION art_quick_idivmod_from_code |
| |
| DEFINE_FUNCTION art_quick_ldiv_from_code |
| subl LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass arg4 b.hi |
| PUSH edx // pass arg3 b.lo |
| PUSH ecx // pass arg2 a.hi |
| PUSH eax // pass arg1 a.lo |
| call SYMBOL(artLdivFromCode) // (jlong a, jlong b) |
| addl LITERAL(28), %esp // pop arguments |
| .cfi_adjust_cfa_offset -28 |
| ret |
| END_FUNCTION art_quick_ldiv_from_code |
| |
| DEFINE_FUNCTION art_quick_ldivmod_from_code |
| subl LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass arg4 b.hi |
| PUSH edx // pass arg3 b.lo |
| PUSH ecx // pass arg2 a.hi |
| PUSH eax // pass arg1 a.lo |
| call SYMBOL(artLdivmodFromCode) // (jlong a, jlong b) |
| addl LITERAL(28), %esp // pop arguments |
| .cfi_adjust_cfa_offset -28 |
| ret |
| END_FUNCTION art_quick_ldivmod_from_code |
| |
| DEFINE_FUNCTION art_quick_lmul_from_code |
| imul %eax, %ebx // ebx = a.lo(eax) * b.hi(ebx) |
| imul %edx, %ecx // ecx = b.lo(edx) * a.hi(ecx) |
| mul %edx // edx:eax = a.lo(eax) * b.lo(edx) |
| add %ebx, %ecx |
| add %ecx, %edx // edx += (a.lo * b.hi) + (b.lo * a.hi) |
| ret |
| END_FUNCTION art_quick_lmul_from_code |
| |
| DEFINE_FUNCTION art_quick_lshl_from_code |
| // ecx:eax << edx |
| xchg %edx, %ecx |
| shld %cl,%eax,%edx |
| shl %cl,%eax |
| test LITERAL(32), %cl |
| jz 1f |
| mov %eax, %edx |
| xor %eax, %eax |
| 1: |
| ret |
| END_FUNCTION art_quick_lshl_from_code |
| |
| DEFINE_FUNCTION art_quick_lshr_from_code |
| // ecx:eax >> edx |
| xchg %edx, %ecx |
| shrd %cl,%edx,%eax |
| sar %cl,%edx |
| test LITERAL(32),%cl |
| jz 1f |
| mov %edx, %eax |
| sar LITERAL(31), %edx |
| 1: |
| ret |
| END_FUNCTION art_quick_lshr_from_code |
| |
| DEFINE_FUNCTION art_quick_lushr_from_code |
| // ecx:eax >>> edx |
| xchg %edx, %ecx |
| shrd %cl,%edx,%eax |
| shr %cl,%edx |
| test LITERAL(32),%cl |
| jz 1f |
| mov %edx, %eax |
| xor %edx, %edx |
| 1: |
| ret |
| END_FUNCTION art_quick_lushr_from_code |
| |
| DEFINE_FUNCTION art_quick_set32_instance_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| subl LITERAL(8), %esp // alignment padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| mov 32(%ebx), %ebx // get referrer |
| PUSH ebx // pass referrer |
| PUSH edx // pass new_val |
| PUSH ecx // pass object |
| PUSH eax // pass field_idx |
| call SYMBOL(artSet32InstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_IF_EAX_ZERO // return or deliver exception |
| END_FUNCTION art_quick_set32_instance_from_code |
| |
| DEFINE_FUNCTION art_quick_set64_instance_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| subl LITERAL(8), %esp // alignment padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH esp // pass SP-8 |
| addl LITERAL(8), (%esp) // fix SP on stack by adding 8 |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH ebx // pass high half of new_val |
| PUSH edx // pass low half of new_val |
| PUSH ecx // pass object |
| PUSH eax // pass field_idx |
| call SYMBOL(artSet64InstanceFromCode) // (field_idx, Object*, new_val, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_IF_EAX_ZERO // return or deliver exception |
| END_FUNCTION art_quick_set64_instance_from_code |
| |
| DEFINE_FUNCTION art_quick_set_obj_instance_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| subl LITERAL(8), %esp // alignment padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| mov 32(%ebx), %ebx // get referrer |
| PUSH ebx // pass referrer |
| PUSH edx // pass new_val |
| PUSH ecx // pass object |
| PUSH eax // pass field_idx |
| call SYMBOL(artSetObjInstanceFromCode) // (field_idx, Object*, new_val, referrer, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_IF_EAX_ZERO // return or deliver exception |
| END_FUNCTION art_quick_set_obj_instance_from_code |
| |
| DEFINE_FUNCTION art_quick_get32_instance_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| mov 32(%esp), %edx // get referrer |
| subl LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // pass referrer |
| PUSH ecx // pass object |
| PUSH eax // pass field_idx |
| call SYMBOL(artGet32InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_get32_instance_from_code |
| |
| DEFINE_FUNCTION art_quick_get64_instance_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| mov 32(%esp), %edx // get referrer |
| subl LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // pass referrer |
| PUSH ecx // pass object |
| PUSH eax // pass field_idx |
| call SYMBOL(artGet64InstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_get64_instance_from_code |
| |
| DEFINE_FUNCTION art_quick_get_obj_instance_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| mov 32(%esp), %edx // get referrer |
| subl LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // pass referrer |
| PUSH ecx // pass object |
| PUSH eax // pass field_idx |
| call SYMBOL(artGetObjInstanceFromCode) // (field_idx, Object*, referrer, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_get_obj_instance_from_code |
| |
| DEFINE_FUNCTION art_quick_set32_static_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| mov 32(%esp), %edx // get referrer |
| subl LITERAL(12), %esp // alignment padding |
| .cfi_adjust_cfa_offset 12 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // pass referrer |
| PUSH ecx // pass new_val |
| PUSH eax // pass field_idx |
| call SYMBOL(artSet32StaticFromCode) // (field_idx, new_val, referrer, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_IF_EAX_ZERO // return or deliver exception |
| END_FUNCTION art_quick_set32_static_from_code |
| |
| DEFINE_FUNCTION art_quick_set64_static_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| subl LITERAL(8), %esp // alignment padding |
| .cfi_adjust_cfa_offset 8 |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| mov 32(%ebx), %ebx // get referrer |
| PUSH edx // pass high half of new_val |
| PUSH ecx // pass low half of new_val |
| PUSH ebx // pass referrer |
| PUSH eax // pass field_idx |
| call SYMBOL(artSet64StaticFromCode) // (field_idx, referrer, new_val, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| .cfi_adjust_cfa_offset -32 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_IF_EAX_ZERO // return or deliver exception |
| END_FUNCTION art_quick_set64_static_from_code |
| |
| DEFINE_FUNCTION art_quick_set_obj_static_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %ebx // remember SP |
| mov 32(%esp), %edx // get referrer |
| subl LITERAL(12), %esp // alignment padding |
| PUSH ebx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // pass referrer |
| PUSH ecx // pass new_val |
| PUSH eax // pass field_idx |
| call SYMBOL(artSetObjStaticFromCode) // (field_idx, new_val, referrer, Thread*, SP) |
| addl LITERAL(32), %esp // pop arguments |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_IF_EAX_ZERO // return or deliver exception |
| END_FUNCTION art_quick_set_obj_static_from_code |
| |
| DEFINE_FUNCTION art_quick_get32_static_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %edx // remember SP |
| mov 32(%esp), %ecx // get referrer |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH ecx // pass referrer |
| PUSH eax // pass field_idx |
| call SYMBOL(artGet32StaticFromCode) // (field_idx, referrer, Thread*, SP) |
| addl LITERAL(16), %esp // pop arguments |
| .cfi_adjust_cfa_offset -16 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_get32_static_from_code |
| |
| DEFINE_FUNCTION art_quick_get64_static_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %edx // remember SP |
| mov 32(%esp), %ecx // get referrer |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH ecx // pass referrer |
| PUSH eax // pass field_idx |
| call SYMBOL(artGet64StaticFromCode) // (field_idx, referrer, Thread*, SP) |
| addl LITERAL(16), %esp // pop arguments |
| .cfi_adjust_cfa_offset -16 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_get64_static_from_code |
| |
| DEFINE_FUNCTION art_quick_get_obj_static_from_code |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME // save ref containing registers for GC |
| mov %esp, %edx // remember SP |
| mov 32(%esp), %ecx // get referrer |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH ecx // pass referrer |
| PUSH eax // pass field_idx |
| call SYMBOL(artGetObjStaticFromCode) // (field_idx, referrer, Thread*, SP) |
| addl LITERAL(16), %esp // pop arguments |
| .cfi_adjust_cfa_offset -16 |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME // restore frame up to return address |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_get_obj_static_from_code |
| |
| DEFINE_FUNCTION art_quick_proxy_invoke_handler |
| SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame and Method* |
| PUSH esp // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH ecx // pass receiver |
| PUSH eax // pass proxy method |
| call SYMBOL(artProxyInvokeHandler) // (proxy method, receiver, Thread*, SP) |
| movd %eax, %xmm0 // place return value also into floating point return value |
| movd %edx, %xmm1 |
| punpckldq %xmm1, %xmm0 |
| addl LITERAL(44), %esp // pop arguments |
| .cfi_adjust_cfa_offset -44 |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_proxy_invoke_handler |
| |
| DEFINE_FUNCTION art_quick_interpreter_entry |
| SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME // save frame and Method* |
| mov %esp, %edx // remember SP |
| PUSH eax // alignment padding |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH eax // pass method |
| call SYMBOL(artInterpreterEntry) // (method, Thread*, SP) |
| movd %eax, %xmm0 // place return value also into floating point return value |
| movd %edx, %xmm1 |
| punpckldq %xmm1, %xmm0 |
| addl LITERAL(44), %esp // pop arguments |
| .cfi_adjust_cfa_offset -44 |
| RETURN_OR_DELIVER_PENDING_EXCEPTION // return or deliver exception |
| END_FUNCTION art_quick_interpreter_entry |
| |
| /* |
| * Routine that intercepts method calls and returns. |
| */ |
| DEFINE_FUNCTION art_quick_instrumentation_entry_from_code |
| xchgl %eax, (%esp) // place LR in eax, save eax |
| PUSH ecx // save ecx |
| PUSH edx // save edx |
| PUSH ebx // save ebx |
| lea 16(%esp), %edx // remember bottom of caller's frame |
| PUSH eax // pass LR |
| PUSH edx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| pushl 24(%esp) // pass Method* |
| .cfi_adjust_cfa_offset 4 |
| call SYMBOL(artInstrumentationMethodEntryFromCode) // (Method*, Thread*, SP, LR) |
| addl LITERAL(16), %esp // pop arguments |
| POP ebx // restore ebx |
| POP edx // restore edx |
| movl (%esp), %ecx // restore ecx (without popping) |
| movl %eax, (%esp) // place method's code pointer on stack |
| movl 4(%esp), %eax // restore eax (without popping) |
| movl LITERAL(SYMBOL(art_quick_instrumentation_exit_from_code)), 4(%esp) |
| // place instrumentation exit as return pc |
| ret // call method (and pop) |
| END_FUNCTION art_quick_instrumentation_entry_from_code |
| DEFINE_FUNCTION art_quick_instrumentation_exit_from_code |
| mov %esp, %ecx // remember bottom of caller's frame |
| PUSH edx // save return value |
| PUSH eax // save other half of return value |
| PUSH ecx // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current |
| .cfi_adjust_cfa_offset 4 |
| call SYMBOL(artInstrumentationMethodExitFromCode) // (Thread*, SP) |
| mov %eax, %ecx // move returned link register |
| // TODO: Set link register for deopt |
| addl LITERAL(8), %esp // pop arguments |
| .cfi_adjust_cfa_offset -8 |
| POP eax // restore return value |
| POP edx // restore other half of return value |
| jmp *%ecx // return |
| END_FUNCTION art_quick_instrumentation_exit_from_code |
| |
| /* |
| * The thread's enter interpreter flag is set and so we should transition to the interpreter |
| * rather than allow execution to continue in the frame below. There may be live results in |
| * registers depending on how complete the operation is when we safepoint - for example, a |
| * set operation may have completed while a get operation needs writing back into the vregs. |
| */ |
| DEFINE_FUNCTION art_quick_deoptimize |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME |
| PUSH esp // pass SP |
| pushl %fs:THREAD_SELF_OFFSET // pass Thread::Current() |
| .cfi_adjust_cfa_offset 4 |
| PUSH edx // push half of return value |
| PUSH eax // push other half of return value |
| call SYMBOL(artDeoptimize) // artDeoptimize(return value, Thread*, SP) |
| // Returns caller method's frame size. |
| addl LITERAL(16), %esp // pop arguments |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| testl %eax, %eax // Was the caller an upcall? |
| jz 1f // Return if caller was upcall. |
| lea (%esp, %eax), %edx // edx == bottom of caller's frame. |
| mov %edx, %esp // Remove frame. |
| SETUP_REF_ONLY_CALLEE_SAVE_FRAME |
| call SYMBOL(artEnterInterpreterFromDeoptimize) // Enter interpreter, callee-save ends stack fragment. |
| RESTORE_REF_ONLY_CALLEE_SAVE_FRAME |
| 1: |
| ret // Return to caller. |
| END_FUNCTION art_quick_deoptimize |
| |
| /* |
| * String's indexOf. |
| * |
| * On entry: |
| * eax: string object (known non-null) |
| * ecx: char to match (known <= 0xFFFF) |
| * edx: Starting offset in string data |
| */ |
| DEFINE_FUNCTION art_quick_indexof |
| PUSH edi // push callee save reg |
| mov STRING_COUNT_OFFSET(%eax), %ebx |
| mov STRING_VALUE_OFFSET(%eax), %edi |
| mov STRING_OFFSET_OFFSET(%eax), %eax |
| testl %edx, %edx // check if start < 0 |
| jl clamp_min |
| clamp_done: |
| cmpl %ebx, %edx // check if start >= count |
| jge not_found |
| lea STRING_DATA_OFFSET(%edi, %eax, 2), %edi // build a pointer to the start of string data |
| mov %edi, %eax // save a copy in eax to later compute result |
| lea (%edi, %edx, 2), %edi // build pointer to start of data to compare |
| subl %edx, %ebx // compute iteration count |
| /* |
| * At this point we have: |
| * eax: original start of string data |
| * ecx: char to compare |
| * ebx: length to compare |
| * edi: start of data to test |
| */ |
| mov %eax, %edx |
| mov %ecx, %eax // put char to match in %eax |
| mov %ebx, %ecx // put length to compare in %ecx |
| repne scasw // find %ax, starting at [%edi], up to length %ecx |
| jne not_found |
| subl %edx, %edi |
| sar LITERAL(1), %edi |
| decl %edi // index = ((curr_ptr - orig_ptr) / 2) - 1 |
| mov %edi, %eax |
| POP edi // pop callee save reg |
| ret |
| .balign 16 |
| not_found: |
| mov LITERAL(-1), %eax // return -1 (not found) |
| POP edi // pop callee save reg |
| ret |
| clamp_min: |
| xor %edx, %edx // clamp start to 0 |
| jmp clamp_done |
| END_FUNCTION art_quick_indexof |
| |
| /* |
| * String's compareTo. |
| * |
| * On entry: |
| * eax: this string object (known non-null) |
| * ecx: comp string object (known non-null) |
| */ |
| DEFINE_FUNCTION art_quick_string_compareto |
| PUSH esi // push callee save reg |
| PUSH edi // push callee save reg |
| mov STRING_COUNT_OFFSET(%eax), %edx |
| mov STRING_COUNT_OFFSET(%ecx), %ebx |
| mov STRING_VALUE_OFFSET(%eax), %esi |
| mov STRING_VALUE_OFFSET(%ecx), %edi |
| mov STRING_OFFSET_OFFSET(%eax), %eax |
| mov STRING_OFFSET_OFFSET(%ecx), %ecx |
| /* Build pointers to the start of string data */ |
| lea STRING_DATA_OFFSET(%esi, %eax, 2), %esi |
| lea STRING_DATA_OFFSET(%edi, %ecx, 2), %edi |
| /* Calculate min length and count diff */ |
| mov %edx, %ecx |
| mov %edx, %eax |
| subl %ebx, %eax |
| cmovg %ebx, %ecx |
| /* |
| * At this point we have: |
| * eax: value to return if first part of strings are equal |
| * ecx: minimum among the lengths of the two strings |
| * esi: pointer to this string data |
| * edi: pointer to comp string data |
| */ |
| repe cmpsw // find nonmatching chars in [%esi] and [%edi], up to length %ecx |
| jne not_equal |
| POP edi // pop callee save reg |
| POP esi // pop callee save reg |
| ret |
| .balign 16 |
| not_equal: |
| movzwl -2(%esi), %eax // get last compared char from this string |
| movzwl -2(%edi), %ecx // get last compared char from comp string |
| subl %ecx, %eax // return the difference |
| POP edi // pop callee save reg |
| POP esi // pop callee save reg |
| ret |
| END_FUNCTION art_quick_string_compareto |
| |
| MACRO1(UNIMPLEMENTED,name) |
| .globl VAR(name, 0) |
| ALIGN_FUNCTION_ENTRY |
| VAR(name, 0): |
| int3 |
| END_MACRO |
| |
| // TODO: implement these! |
| UNIMPLEMENTED art_quick_memcmp16 |
