Questions tagged [powerpc]

Questions related to the PowerPC family of RISC processors.

PowerPC is a RISC architecture created jointly by Apple, IBM, and Freescale (formerly Motorola). The PowerPC standard is now handled by Power.org. It includes both 32 and 64 bit versions of the processor.

Helpful Links:

Overview of the register set and some history of the ISA
Wikipedia Article
Quick reference table of instructions
Apple's PowerPC Addressing Modes and Assembler Instructions, including details on condition-codes and branches, and that you can compare into CR0..CR7 and use any of them for most branches. Otherwise mostly just the mnemonic and allowed operands, and a one-line description (but there are a LOT of mnemonics so it's nice to have a compact list).
Download the full manual as pdf
A helpful table for understanding the relationships between so many inconsistently named ppc processors.

See Also: cpu aix osx

705 questions

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8 answers

How can we restore ppc/ppc64 as well as full 10.4/10.5 SDK support to Xcode 4?

Since Apple only ships SDK 10.6 with Xcode4, developing PPC applications with Xcode4 became impossible. While it is possible to develop applications with Xcode4 that can also run on 10.5 and maybe even on 10.4 systems (by selecting SDK 10.6, but…

xcode xcode4 universal-binary osx-leopard powerpc

asked Mar 17 '11 at 00:37

Mecki

125,244
33
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253

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3 answers

How to compile dts Linux device tree source files to dtb?

I have a device tree file (.dts) and I want to compile the file for my powerpc based board. How can I do it on my machine, which is not powerpc based?? Can I do it with the DTC installed on my Ubuntu system? Or will it be more like using a separate…

linux-kernel cross-compiling embedded-linux powerpc device-tree

asked Feb 10 '14 at 07:07

mdsingh

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4 answers

python easy_install fails with "assembler for architecture ppc not installed" on Mac OS X

bash-3.2$ sudo easy_install appscript Password: Searching for appscript Reading http://pypi.python.org/simple/appscript/ Reading http://appscript.sourceforge.net Best match: appscript 1.0.0 Downloading…

python xcode macos installation powerpc

asked Mar 10 '11 at 06:47

Tom

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5 answers

Do I really have to worry about alignment when using placement new operator?

I read this When should I worry about alignment? but I am still do not know if I have to worry about not aligned pointer returned by placement new operator - like in this example: class A { public: long double a; long long b; A() : a(1.3),…

c++ g++ memory-alignment powerpc placement-new

asked Aug 02 '12 at 16:19

PiotrNycz

23,099
7
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112

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4 answers

Installing PIL on OS X Snow Leopard w/Xcode4 (no PPC support)

Xcode4 dropped PPC support, so when I try building PIL, it throws hate: Bens-MacBook-Air:Imaging-1.1.7 bkeating$ python setup.py build running buildrunning build_pyrunning build_ext --- using frameworks at /System/Library/Frameworks building…

python xcode python-imaging-library powerpc

asked Mar 20 '11 at 05:10

Ben Keating

8,206
9
37
37

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6 answers

How do I create a single makefile for both 32- and 64-bit?

I have a makefile that works transparently for Linux (x86_64) and OS X Intel (x86_64). This uses 64-bit specific GCC options. Is there a way to adjust the makefile so that I could build for 32-bit and 64-bit OS X PPC (ppc, ppc64) without having to…

architecture gcc makefile powerpc

asked Nov 04 '10 at 11:29

Alex Reynolds

95,983
54
240
345

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3 answers

How can I use mach_absolute_time without overflowing?

On Darwin, the POSIX standard clock_gettime(CLOCK_MONOTONIC) timer is not available. Instead, the highest resolution monotonic timer is obtained through the mach_absolute_time function from mach/mach_time.h. The result returned may be an unadjusted…

macos x86 posix powerpc darwin

asked Apr 30 '14 at 01:18

Nicholas Wilson

9,435
1
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80

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5 answers

What makes Apple's PowerPC memcpy so fast?

I've written several copy functions in search of a good memory strategy on PowerPC. Using the Altivec or fp registers with cache hints (dcb*) doubles the performance over a simple byte copy loop for large data. Initially pleased with that, I threw…

optimization memcpy powerpc shark altivec

asked Jan 02 '10 at 01:57

user242091

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2 answers

Why is function's length information of other shared lib in ELF?

Our project (C++, Linux, gcc, PowerPC) consists of several shared libraries. When releasing a new version of the package, only those libs should change whose source code was actually affected. With "change" I mean absolute binary identity (the…

c++ linux elf powerpc

asked Nov 29 '12 at 14:47

Ingmar

2,361
3
19
33

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1 answer

How do I add PPC/PPC64 support back to Xcode 4.2 under Lion?

I have a Lion (10.7.1) system on which I installed Xcode 4.2. Suppose I have a simple C program helloWorld.c as follows: #include main() { printf("hello, world\n"); } Using this setup, I would like to try to compile helloWorld.c for use…

xcode macos gcc osx-lion powerpc

asked Aug 21 '11 at 09:37

Alex Reynolds

95,983
54
240
345

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3 answers

How can I know what type of debug info is in an ELF object file?

I have an ELF object file. I want to know which type of debugging info it contains. It was compiled with the Diab compiler (C source) for the PPC architecture. I'm pretty sure it was built with debugging symbols. I have tried extracting the…

c elf debug-symbols powerpc

asked Aug 17 '11 at 19:13

johnj33

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2 answers

GCC refuses to emit long calls for operator new/delete on PowerPC

PowerPC branches only have 24 bits available for the target offset, so if the text section gets too big, branches on one end won't be able to reach targets on the other. There's a longer sequence of instructions that can reach targets farther away…

c++ gcc powerpc

asked Mar 11 '13 at 22:33

Michael Mrozek

169,610
28
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175

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4 answers

Is it possible to make Node.js use Rhino as the Javascript engine?

I use Node.js for several jobs on my web apps and so far everthing's ok. But the Node.js uses Google's V8 as the default Javascript engine (JSE) and V8 runs exlusively on the x86 and ARM Instruction Set Architectures (ISA). Now I have a PPC…

node.js rhino llvm v8 powerpc

asked Dec 04 '10 at 10:35

Terry

1,206
1
10
26

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1 answer

Why is there a dramatic speed drop for access to static ram over cache c++?

Background I have been looking into potentially using the MPC5200 static ram space as scratch pad memory. We have 16Kb of unused memory that appears on the processor bus (source). Now some important implementation notes are: This memory is used by…

c++ powerpc rtems

asked Apr 01 '15 at 20:35

Fantastic Mr Fox

32,495
27
95
175

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4 answers

Incorrect floating point behavior

When I run the below C++ program in a 32-bit powerpc kernel which supports software floating emulation (hardware floating point disabled), I get a incorrect conditional evaluation. Can some tell me what's the potential problem here? #include…

c++ floating-point embedded-linux ieee-754 powerpc

asked Feb 23 '13 at 20:34

rajachan

2 3

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