/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
/*
* typedef void (*PushAllRegistersCallback)(SafePointBarrier*, ThreadState*, intptr_t*);
* extern "C" void pushAllRegisters(SafePointBarrier*, ThreadState*, PushAllRegistersCallback)
*/
.type pushAllRegisters, %function
.global pushAllRegisters
.hidden pushAllRegisters
#ifdef __thumb__
/* In THUMB Mode jump to ARM stub via bx to ensure CPU mode switch.
* FIXME: This trampoline is provided to workaround bugs in
* the THUMB/ARM interworking that appear in the component build.
* When these issues are resolved this stub can be removed.
*/
.align 2
.code 16
.thumb_func
pushAllRegisters:
adr r3, pushAllRegistersARM
bx r3
.type pushAllRegistersARM, %function
.hidden pushAllRegistersARM
.align 4
.code 32
pushAllRegistersARM:
#else
/* ARM Mode */
.align 4
.code 32
pushAllRegisters:
#endif
/* Push all callee-saved registers and save return address. */
push {r4-r11, lr}
/* Pass the two first arguments unchanged (r0, r1)
* and pass the stack pointer after pushing callee-saved
* registers to the callback function.
*/
mov r3, r2
mov r2, sp
blx r3
/* Discard all the registers, and pop lr into pc which returns
* and switches mode if needed.
*/
add sp, sp, #32
pop {pc}