blob: 95496388575d455770640cc03bb5b5dc48f3e04b [file] [log] [blame]
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2005-2014 Rich Felker, et al.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* This has been implemented in assembly to ensure that the following
* requirements from section 4.3.5 of the Run-time ABI for ARM
* Architecture are met:
*
* Implementations of this function should corrupt only the result
* register (r0) and the non-parameter integer core registers allowed to
* be corrupted by the [AAPCS] (ip, lr, and CPSR). Registers r1 -r3 must
* be preserved.
*/
.syntax unified
.global __aeabi_read_tp
.type __aeabi_read_tp,%function
__aeabi_read_tp:
push {r1,r2,r3,lr}
bl __aeabi_read_tp_c
pop {r1,r2,r3,lr}
bx lr