Whether the following piece of code is placed in the read-only memory of code (text) segment or data segment?
I am getting two different answers while searching in google that's why the confusion is
Most likely the text segment but some compilers can be forced to put it in the data segment using comand line switches...and if you really care print out its location using a debugger to find out whether it lies in the text or data segment...difference is that the text segment literal cant be modified but the data segment one can be.
How do I filter a long report, with the "STARTWORD" and "STOPWORD" as the variables to use in my awk command, to print the whole data segment that only contains the matched start/stop word?
awk '/start/, /stop/' file <- this prints the line, though I need to print the whole segment. Newline... (1 Reply)
Hi
1) Please go through the following code :
char string2;
char string1;
main()
{
memcpy(string2,"SENDER ",12);
strcpy(string1,"******");
printf("%s\n%s\n",string1,string2);
}
2) and the output of... (7 Replies)
When run it, segment fault.
What is wrong?
#include <stdio.h>
#include <stdlib.h>
const int max =20;
//****************************************************
// Input Matrix
//****************************************************
void inMatrixAA(int *AA, int row, int col)... (9 Replies)
Hi,
as per my Unix admin all parameters in Ulimit are set to Unlimited in Hard limits but some how few profiles setting data segment part to limited number value. So i wanted to over write in my profile to set unlimited as hard limits are set to unlimited. What is the command to set ulimit for... (1 Reply)
Hi guys,
Are all users authorised to modify the data segment and stack segment to unlimited on AIX?
Is a reboot required after giving ulimit -d unlimited?
Thanks
vandi (2 Replies)
Hi to all.
I'm reciving a "Segment violation" error from this code and I don't know why.
void insertAtEnd(NodeType *pList) {
char element;
printf("Introduce a element: \n");
setbuf(stdin, NULL);
scanf("%c", &element);
//Find the end of the list;
while... (4 Replies)
Hi guys,
I use AIX version 5 on IBM Power 5+ machine. I am currently trying to experiment with sort of self-modifying code, like this:
ucontext_t ut;
getcontext(&ut);
int iar = ut.uc_mcontext.jmp_context.iar;
int pageSize = getpagesize();
int rest = iar % pageSize;
void *ptr = iar -... (6 Replies)
I always get segment fault, why? can sb help me and modify it, I have spend on much time on
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <string.h>
#define MAX 10
pthread_t thread;
void *thread1()
{
int *a;
int i, n;
... (1 Reply)
Discussion started by: yanglei_fage
1 Replies
LEARN ABOUT SUNOS
size
size(1) User Commands size(1)NAME
size - print section sizes in bytes of object files
SYNOPSIS
size [-f] [-F] [-n] [-o] [-V] [-x] filename...
DESCRIPTION
The size command produces segment or section size information in bytes for each loaded section in ELF object files. size prints out the
size of the text, data, and bss (uninitialized data) segments (or sections) and their total.
size processes ELF object files entered on the command line. If an archive file is input to the size command, the information for each
object file in the archive is displayed.
When calculating segment information, the size command prints out the total file size of the non-writable segments, the total file size of
the writable segments, and the total memory size of the writable segments minus the total file size of the writable segments.
If it cannot calculate segment information, size calculates section information. When calculating section information, it prints out the
total size of sections that are allocatable, non-writable, and not NOBITS, the total size of the sections that are allocatable, writable,
and not NOBITS, and the total size of the writable sections of type NOBITS. NOBITS sections do not actually take up space in the filename.
If size cannot calculate either segment or section information, it prints an error message and stops processing the file.
OPTIONS
The following options are supported:
-f Prints out the size of each allocatable section, the name of the section, and the total of the section sizes. If there is no sec-
tion data, size prints out an error message and stops processing the file.
-F Prints out the size of each loadable segment, the permission flags of the segment, then the total of the loadable segment sizes.
If there is no segment data, size prints an error message and stops processing the file.
-n Prints out non-loadable segment or non-allocatable section sizes. If segment data exists, size prints out the memory size of each
loadable segment or file size of each non-loadable segment, the permission flags, and the total size of the segments. If there is
no segment data, size prints out, for each allocatable and non-allocatable section, the memory size, the section name, and the
total size of the sections. If there is no segment or section data, size prints an error message and stops processing.
-o Prints numbers in octal, not decimal.
-V Prints the version information for the size command on the standard error output.
-x Prints numbers in hexadecimal, not decimal.
EXAMPLES
The examples below are typical size output.
Example 1: Producing size information
example% size filename
2724 + 88 + 0 = 2812
Example 2: Producing allocatable section size information
example% size -f filename
26(.text) + 5(.init) + 5(.fini) = 36
Example 3: Producing loadable segment size information
example% size -F filename
2724(r-x) + 88(rwx) + 0(rwx) = 2812 ... (If statically linked)
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWbtool |
+-----------------------------+-----------------------------+
SEE ALSO as(1), cc(1B), ld(1), ar.h(3HEAD), a.out(4), attributes(5)NOTES
Since the size of bss sections is not known until link-edit time, the size command will not give the true total size of pre-linked objects.
SunOS 5.10 16 Oct 1996 size(1)