06-13-2011
Advanced info on CPU Emulators
I have searched and searched this topic but without looking at source code ; my next step maybe , I find the same ambiguous information.
My main question is how is the target code translated? It is stated that there are variables created that hold the data that the emulated CPU would hold in it's registers so I assume that an algorithm is run with this data to produce the binary that the CPU needs. Would these variables represent a dummy CPU and the algorithms convert the target CPU variables (registers) to what the host can execute?
Interpreted implies that the Emulator would just be substituting code for other code from a look-up table but then the program would actually be more or less ported at this point would it not?
Any help or direction will be appreciated.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
iam new to unix , i would like to practice unix commands at home, can anyone help me to know if there are any emulators that i can download to practice or any trial versions that can be installed to practice.
Regards
dep (1 Reply)
Discussion started by: dep
1 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Is there a command I can use to find out how many CPU's and what type are on my server? (I was told to use cat /proc/cpuinfo)
Also, how do I know what kind of bus speeds are on my server?
Thanks in advance:) (3 Replies)
Discussion started by: ihot
3 Replies
3. HP-UX
is there a single command or location from which one can get information like cpu Mhz,cpu cache...etc in HP UX:) (1 Reply)
Discussion started by: vijayca
1 Replies
4. Gentoo
well. the title says it all.
im runing top in batch mode like this
top -b -n1 > somefile
but the cpu usage info is not correct.
if i run top normally, the first second, i see the same wrong info, and then it corrects itself.
i found only one small mention of it on this forum. with this link... (7 Replies)
Discussion started by: broli
7 Replies
5. AIX
Hi,
may be this is an AIX noob question:
my current C++ application runs on Linux and is quite memory consuming. Therefore, the application writes a logfile after it has finished containing memory information, CPU information, information on the running other processes besides my application... (5 Replies)
Discussion started by: DarthVader77
5 Replies
6. HP-UX
Hi,
I am going to buy a software that is licenced per CORE.
I have a HPUX B1123 64 bit with 8 cpus.
How can i know how many cores are in my machine ?
Thanks (3 Replies)
Discussion started by: yoavbe
3 Replies
7. Shell Programming and Scripting
Dear all,
Is there any generic command working on all Unix listing the CPU of a server?
I found different command line per OS but I am looking for a more generic one.
Thanks for your answer. (5 Replies)
Discussion started by: sgoiffon
5 Replies
8. Shell Programming and Scripting
Hello to everyone.
This is my first post. I want to make one perl agent which calculate following things from Linux Server. Actually I want to pull all this information from 2 linux client and wants to display on web interface.
First I want to calculate below details
1) CPU
2) MEMORY
3)... (6 Replies)
Discussion started by: sania.mirza
6 Replies
9. AIX
To get only the cpu info from the topas command terminal.
CPU User% Kern% Wait% Idle% Physc Entc
ALL 2.3 4.4 0.0 93.3 0.07 7.7
I tried some thing like this but did not work
topas << done
grep "ALL"
q
done
Can someone help me in this. (5 Replies)
Discussion started by: rpm120
5 Replies
10. UNIX for Dummies Questions & Answers
Hello all
i did search the web and found allot of answers but im confused
what are the best ways to get this info via Linux default commands
1. current Cpu Usage in Percent
2. current Memory Usage In Bytes
3. current Memory Available In Bytes
Thanks! (2 Replies)
Discussion started by: umen
2 Replies
LEARN ABOUT CENTOS
cpu_capabilities
cpu_capabilities(3alleg4) Allegro manual cpu_capabilities(3alleg4)
NAME
cpu_capabilities - Contains the capability flags of the CPU. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
extern int cpu_capabilities;
DESCRIPTION
Contains CPU flags indicating what features are available on the current CPU. The flags can be any combination of these:
CPU_ID - Indicates that the "cpuid" instruction is
available. If this is set, then all Allegro CPU
variables are 100% reliable, otherwise there
may be some mistakes.
CPU_FPU - An FPU is available.
CPU_IA64 - Running on Intel 64 bit CPU
CPU_AMD64 - Running on AMD 64 bit CPU
CPU_MMX - Intel MMX instruction set is available.
CPU_MMXPLUS - Intel MMX+ instruction set is available.
CPU_SSE - Intel SSE instruction set is available.
CPU_SSE2 - Intel SSE2 instruction set is available.
CPU_SSE3 - Intel SSE3 instruction set is available.
CPU_3DNOW - AMD 3DNow! instruction set is available.
CPU_ENH3DNOW - AMD Enhanced 3DNow! instruction set is
available.
CPU_CMOV - Pentium Pro "cmov" instruction is available.
You can check for multiple features by OR-ing the flags together. For example, to check if the CPU has an FPU and MMX instructions avail-
able, you'd do:
if ((cpu_capabilities & (CPU_FPU | CPU_MMX)) ==
(CPU_FPU | CPU_MMX)) {
printf("CPU has both an FPU and MMX instructions!
");
}
You can read this variable after you have called check_cpu() (which is automatically called by allegro_init()).
SEE ALSO
check_cpu(3alleg4), cpu_vendor(3alleg4), cpu_family(3alleg4), cpu_model(3alleg4), cpu_capabilities(3alleg4), allegro_init(3alleg4)
Allegro version 4.4.2 cpu_capabilities(3alleg4)