diff options
Diffstat (limited to 'qemu/roms/openbios/arch/ppc/misc.S')
| -rw-r--r-- | qemu/roms/openbios/arch/ppc/misc.S | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/qemu/roms/openbios/arch/ppc/misc.S b/qemu/roms/openbios/arch/ppc/misc.S deleted file mode 100644 index 435ce0eca..000000000 --- a/qemu/roms/openbios/arch/ppc/misc.S +++ /dev/null @@ -1,74 +0,0 @@ -/* - * Creation Date: <2002/10/20 15:54:50 samuel> - * Time-stamp: <2002/10/20 15:57:21 samuel> - * - * <misc.S> - * - * Low-level stuff - * - * Copyright (C) 2002, 2003 Samuel Rydh (samuel@ibrium.se) - * - * Based upon misc.S from the the linux kernel with the following - * copyrights: - * - * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org), - * Cort Dougan (cort@cs.nmt.edu), Paul Mackerras - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation - * - */ - -#include "asm/asmdefs.h" -#include "asm/processor.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): - 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 - -GLOBL(__ashldi3): - subfic r6,r5,32 - slw r3,r3,r5 # MSW = count > 31 ? 0 : MSW << count - addi r7,r5,32 # could be xori, or addi with -32 - srw r6,r4,r6 # t1 = count > 31 ? 0 : LSW >> (32-count) - slw r7,r4,r7 # t2 = count < 32 ? 0 : LSW << (count-32) - or r3,r3,r6 # MSW |= t1 - slw r4,r4,r5 # LSW = LSW << count - or r3,r3,r7 # MSW |= t2 - blr - -GLOBL(__lshrdi3): - 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) - srw r7,r3,r7 # t2 = count < 32 ? 0 : MSW >> (count-32) - or r4,r4,r6 # LSW |= t1 - srw r3,r3,r5 # MSW = MSW >> count - or r4,r4,r7 # LSW |= t2 - blr |