source: mainline/uspace/lib/c/arch/arm32/src/eabi.S@ 582a0b8

#
# Copyright (c) 2012 Martin Decky
# 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.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
#

#include <abi/asmtool.h>

.text

FUNCTION_BEGIN(__aeabi_read_tp)
        mov r0, r9
        mov pc, lr
FUNCTION_END(__aeabi_read_tp)

FUNCTION_BEGIN(__aeabi_idiv)
        push {lr}
        bl __divsi3
        pop {lr}
        mov pc, lr
FUNCTION_END(__aeabi_idiv)

FUNCTION_BEGIN(__aeabi_uidiv)
        push {lr}
        bl __udivsi3
        pop {lr}
        mov pc, lr
FUNCTION_END(__aeabi_uidiv)

FUNCTION_BEGIN(__aeabi_idivmod)
        push {lr}
        sub sp, sp, #12
        add r2, sp, #4
        bl __udivmodsi3
        ldr r1, [sp, #4]
        add sp, sp, #12
        pop {lr}
        mov pc, lr
FUNCTION_END(__aeabi_idivmod)

FUNCTION_BEGIN(__aeabi_uidivmod)
        push {lr}
        sub sp, sp, #12
        add r2, sp, #4
        bl __udivmodsi3
        ldr r1, [sp, #4]
        add sp, sp, #12
        pop {lr}
        mov pc, lr
FUNCTION_END(__aeabi_uidivmod)

FUNCTION_BEGIN(__aeabi_ldivmod)
        push {lr}
        sub sp, sp, #24
        push {sp}
        bl __divmoddi3
        add sp, sp, #4
        pop {r2, r3}
        add sp, sp, #16
        pop {lr}
        mov pc, lr
FUNCTION_END(__aeabi_ldivmod)

FUNCTION_BEGIN(__aeabi_uldivmod)
        push {lr}
        sub sp, sp, #24
        push {sp}
        bl __udivmoddi3
        add sp, sp, #4
        pop {r2, r3}
        add sp, sp, #16
        pop {lr}
        mov pc, lr
FUNCTION_END(__aeabi_uldivmod)