diff options
Diffstat (limited to 'qemu/roms/u-boot/arch/powerpc/lib/_ashrdi3.S')
| -rw-r--r-- | qemu/roms/u-boot/arch/powerpc/lib/_ashrdi3.S | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/qemu/roms/u-boot/arch/powerpc/lib/_ashrdi3.S b/qemu/roms/u-boot/arch/powerpc/lib/_ashrdi3.S deleted file mode 100644 index 620916676..000000000 --- a/qemu/roms/u-boot/arch/powerpc/lib/_ashrdi3.S +++ /dev/null @@ -1,44 +0,0 @@ -/* - * This code was copied from arch/powerpc/kernel/misc_32.S in the Linux - * kernel sources (commit 85e2efbb1db9a18d218006706d6e4fbeb0216213, also - * known as 2.6.38-rc5). The source file copyrights are as follows: - * - * (C) Copyright 1995-1996 Gary Thomas (gdt@linuxppc.org) - * - * Largely rewritten by Cort Dougan (cort@cs.nmt.edu) - * and Paul Mackerras. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <ppc_asm.tmpl> -#include <ppc_defs.h> -#include <config.h> - -/* - * Extended precision shifts. - * - * Updated to be valid for shift counts from 0 to 63 inclusive. - * -- Gabriel - * - * R3/R4 has 64 bit value - * R5 has shift count - * result in R3/R4 - * - * ashrdi3: arithmetic right shift (sign propagation) - * lshrdi3: logical right shift - * ashldi3: left shift - */ - .globl __ashrdi3 -__ashrdi3: - subfic r6,r5,32 - srw r4,r4,r5 # LSW = count > 31 ? 0 : LSW >> count - addi r7,r5,32 # could be xori, or addi with -32 - slw r6,r3,r6 # t1 = count > 31 ? 0 : MSW << (32-count) - rlwinm r8,r7,0,32 # t3 = (count < 32) ? 32 : 0 - sraw r7,r3,r7 # t2 = MSW >> (count-32) - or r4,r4,r6 # LSW |= t1 - slw r7,r7,r8 # t2 = (count < 32) ? 0 : t2 - sraw r3,r3,r5 # MSW = MSW >> count - or r4,r4,r7 # LSW |= t2 - blr |