From: alter Gonzalez <wgonzalez@persystems.com>
To: linux-assembly@vger.kernel.org, wgonzalez@persystems.com
Subject: I have a problem with inline ASM
Date: Thu, 04 Jul 2002 16:18:20 -0500 [thread overview]
Message-ID: <3D24BB9C.E518173C@persystems.com> (raw)
Good morning first all.
I need to do a encrypt routines for linux asm.
tha call is as:
....
unsigned int xorValue;
xorValue = 0x2030;
for (index = 0; index < 0x20; index ++) {
xor_word(*(unsignded int *)&fuffer[index],xorValue);
}
...
The problem is that if I want to use WORD (i.e. unsigned int , or int)
values , RHIDE show an error.
I believe that all is fine.
Can you helpme , please?
The .H y .C files are ..
//------------------------------------------------------
//ENCRYPT.H
#ifndef _ENCRYPT_H_
#define _ENCRYPT_H_
...
BYTE rol_byte(BYTE value , BYTE bits);
WORD rol_word(WORD value , BYTE bits);
......
#endif
//------------------------------------------------------
//ENCRYPT.C
BYTE rol_byte(BYTE value, BYTE bits)
{
__asm__ __volatile__("movb %1, %%al;
movb %2, %%cl;
rolb %%cl, %%al;
movb %%al, %0;"
:"=al"(value) // output
:"al"(value),"cl"(bits) // input
);
return value;
}
WORD rol_word(WORD value, BYTE bits)
{
__asm__ __volatile__("movl %1, %%eax;
movb %2, %%cl;
roll %%cl, %%eax;
movl %%eax, %0;"
:"=eax"(value) // output
:"eax"(value),"cl"(bits) // input
);
return value;
}
with inline ASM
next reply other threads:[~2002-07-04 21:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-04 21:18 alter Gonzalez [this message]
2002-07-05 1:16 ` I have a problem with inline ASM h-peter recktenwald
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3D24BB9C.E518173C@persystems.com \
--to=wgonzalez@persystems.com \
--cc=linux-assembly@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.