| /* |
| * 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_arm.S" |
| |
| .cfi_sections .debug_frame |
| |
| /* |
| * Portable invocation stub. |
| * On entry: |
| * r0 = method pointer |
| * r1 = argument array or NULL for no argument methods |
| * r2 = size of argument array in bytes |
| * r3 = (managed) thread pointer |
| * [sp] = JValue* result |
| * [sp + 4] = result type char |
| */ |
| ENTRY art_portable_invoke_stub |
| push {r0, r4, r5, r9, r11, lr} @ spill regs |
| .save {r0, r4, r5, r9, r11, lr} |
| .pad #24 |
| .cfi_adjust_cfa_offset 24 |
| .cfi_rel_offset r0, 0 |
| .cfi_rel_offset r4, 4 |
| .cfi_rel_offset r5, 8 |
| .cfi_rel_offset r9, 12 |
| .cfi_rel_offset r11, 16 |
| .cfi_rel_offset lr, 20 |
| mov r11, sp @ save the stack pointer |
| .cfi_def_cfa_register r11 |
| mov r9, r3 @ move managed thread pointer into r9 |
| mov r4, #SUSPEND_CHECK_INTERVAL @ reset r4 to suspend check interval |
| add r5, r2, #16 @ create space for method pointer in frame |
| and r5, #0xFFFFFFF0 @ align frame size to 16 bytes |
| sub sp, r5 @ reserve stack space for argument array |
| add r0, sp, #4 @ pass stack pointer + method ptr as dest for memcpy |
| bl memcpy @ memcpy (dest, src, bytes) |
| ldr r0, [r11] @ restore method* |
| ldr r1, [sp, #4] @ copy arg value for r1 |
| ldr r2, [sp, #8] @ copy arg value for r2 |
| ldr r3, [sp, #12] @ copy arg value for r3 |
| mov ip, #0 @ set ip to 0 |
| str ip, [sp] @ store NULL for method* at bottom of frame |
| add sp, #16 @ first 4 args are not passed on stack for portable |
| ldr ip, [r0, #METHOD_CODE_OFFSET] @ get pointer to the code |
| blx ip @ call the method |
| mov sp, r11 @ restore the stack pointer |
| ldr ip, [sp, #24] @ load the result pointer |
| strd r0, [ip] @ store r0/r1 into result pointer |
| pop {r0, r4, r5, r9, r11, lr} @ restore spill regs |
| .cfi_adjust_cfa_offset -24 |
| bx lr |
| END art_portable_invoke_stub |
| |
| .extern artPortableProxyInvokeHandler |
| ENTRY art_portable_proxy_invoke_handler |
| @ Fake callee save ref and args frame set up, note portable doesn't use callee save frames. |
| @ TODO: just save the registers that are needed in artPortableProxyInvokeHandler. |
| push {r1-r3, r5-r8, r10-r11, lr} @ 10 words of callee saves |
| .save {r1-r3, r5-r8, r10-r11, lr} |
| .cfi_adjust_cfa_offset 40 |
| .cfi_rel_offset r1, 0 |
| .cfi_rel_offset r2, 4 |
| .cfi_rel_offset r3, 8 |
| .cfi_rel_offset r5, 12 |
| .cfi_rel_offset r6, 16 |
| .cfi_rel_offset r7, 20 |
| .cfi_rel_offset r8, 24 |
| .cfi_rel_offset r10, 28 |
| .cfi_rel_offset r11, 32 |
| .cfi_rel_offset lr, 36 |
| sub sp, #8 @ 2 words of space, bottom word will hold Method* |
| .pad #8 |
| .cfi_adjust_cfa_offset 8 |
| @ Begin argument set up. |
| str r0, [sp, #0] @ place proxy method at bottom of frame |
| mov r2, r9 @ pass Thread::Current |
| mov r3, sp @ pass SP |
| blx artPortableProxyInvokeHandler @ (Method* proxy method, receiver, Thread*, SP) |
| ldr r12, [r9, #THREAD_EXCEPTION_OFFSET] @ load Thread::Current()->exception_ |
| ldr lr, [sp, #44] @ restore lr |
| add sp, #48 @ pop frame |
| .cfi_adjust_cfa_offset -48 |
| bx lr @ return |
| END art_portable_proxy_invoke_handler |
