This is the mail archive of the binutils@sources.redhat.com mailing list for the binutils project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [help]Creating PLT entries

From: Andreas Schwab <schwab at suse dot de>
To: "C Jaiprakash, Noida" <C dot Jaiprakash at noida dot hcltech dot com>
Cc: <binutils at sources dot redhat dot com>
Date: Fri, 24 Sep 2004 21:23:48 +0200
Subject: Re: [help]Creating PLT entries
References: <33BC33A9E76474479B76AD0DE8A169728DD8@exch-ntd.nec.noida.hcltech.com>

"C Jaiprakash, Noida" <C.Jaiprakash@noida.hcltech.com> writes:

> Following is part of plt entries table 
> static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] =
> {
>   0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
>   0, 0, 0, 0,             /* replaced with offset to .got + 4.  */
>   0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
>   0, 0, 0, 0,             /* replaced with offset to .got + 8.  */
>   0, 0, 0, 0              /* pad out to 20 bytes.  */
> };
>
> How can i modify this so that instead of jmp ([%pc,addr]) jmp
> ([%pc,reg]) is used. Where should i look for modifications?

Obviously, the array contains the machine code.  Just put the right values
there.  Of course, you also have to change the code that fills in the
offsets.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

References:
- [help]Creating PLT entries
  - From: C Jaiprakash, Noida

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]