diff options
| author | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
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| committer | AJFISH <AJFISH@6f19259b-4bc3-4df7-8a09-765794883524> | 2009-12-06 01:57:05 +0000 |
| commit | 2ef2b01e07c02db339f34004445734a2dbdd80e1 (patch) | |
| tree | 19532a6be8d8bdb0aef04bd00c1efb582f6dc841 /ArmPkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S | |
| parent | f7753a96ba1653ddd31b01c198a352f6332ac404 (diff) | |
| download | edk2-platforms-2ef2b01e07c02db339f34004445734a2dbdd80e1.tar.xz | |
Adding support for BeagleBoard.
ArmPkg - Supoprt for ARM specific things that can change as the architecture changes. Plus semihosting JTAG drivers.
EmbeddedPkg - Generic support for an embeddded platform. Including a light weight command line shell.
BeagleBoardPkg - Platform specifics for BeagleBoard. SD Card works, but USB has issues. Looks like a bug in the open source USB stack (Our internal stack works fine).
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9518 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S')
| -rw-r--r-- | ArmPkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S new file mode 100644 index 0000000000..e5a0afa053 --- /dev/null +++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/udivsi3.S @@ -0,0 +1,57 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2008-2009 Apple Inc. All rights reserved. +# +# All rights reserved. This program and the accompanying materials +# are licensed and made available under the terms and conditions of the BSD License +# which accompanies this distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +#------------------------------------------------------------------------------ + + .text + .align 2 + .globl ___udivsi3 +___udivsi3: + @ args = 0, pretend = 0, frame = 0 + @ frame_needed = 1, uses_anonymous_args = 0 + cmp r1, #0 + cmpne r0, #0 + stmfd sp!, {r4, r5, r7, lr} + add r7, sp, #8 + beq L2 + clz r2, r1 + clz r3, r0 + rsb r3, r3, r2 + cmp r3, #31 + bhi L2 + ldmeqfd sp!, {r4, r5, r7, pc} + add r5, r3, #1 + rsb r3, r3, #31 + mov lr, #0 + mov r2, r0, asl r3 + mov ip, r0, lsr r5 + mov r4, lr + b L8 +L9: + mov r0, r2, lsr #31 + orr ip, r0, ip, asl #1 + orr r2, r3, lr + rsb r3, ip, r1 + sub r3, r3, #1 + and r0, r1, r3, asr #31 + mov lr, r3, lsr #31 + rsb ip, r0, ip + add r4, r4, #1 +L8: + cmp r4, r5 + mov r3, r2, asl #1 + bne L9 + orr r0, r3, lr + ldmfd sp!, {r4, r5, r7, pc} +L2: + mov r0, #0 + ldmfd sp!, {r4, r5, r7, pc} |