diff options
Diffstat (limited to 'third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S')
| -rw-r--r-- | third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S b/third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S deleted file mode 100644 index ab04fd488f..0000000000 --- a/third_party/libaeabi-cortexm0/core/cortex-m0/lmul.S +++ /dev/null @@ -1,65 +0,0 @@ -/* Runtime ABI for the ARM Cortex-M0 - * lmul.S: 64 bit multiplication - * - * Copyright (c) 2013 Jörg Mische <bobbl@gmx.de> - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT - * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - - - - .syntax unified - .text - .thumb - .cpu cortex-m0 - - - -@ long long __aeabi_lmul(long long r1:r0, long long r3:r2) -@ -@ Multiply r1:r0 and r3:r2 and return the product in r1:r0 -@ Can also be used for unsigned long product -@ - .thumb_func - .section .text.__aeabi_lmul - .global __aeabi_lmul -__aeabi_lmul: - - push {r4, lr} - muls r1, r2 - muls r3, r0 - adds r1, r3 - - lsrs r3, r0, #16 - lsrs r4, r2, #16 - muls r3, r4 - adds r1, r3 - - lsrs r3, r0, #16 - uxth r0, r0 - uxth r2, r2 - muls r3, r2 - muls r4, r0 - muls r0, r2 - - movs r2, #0 - adds r3, r4 - adcs r2, r2 - lsls r2, #16 - adds r1, r2 - - lsls r2, r3, #16 - lsrs r3, #16 - adds r0, r2 - adcs r1, r3 - pop {r4, pc} |