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From: Sebastian Huber <sebastian.huber@embedded-brains.de>
To: gdb@sourceware.org
Subject: Re: How can I figure out the register numbers for a remote target stub?
Date: Wed, 29 Nov 2017 10:53:00 -0000	[thread overview]
Message-ID: <87851068-0256-c35d-00a6-b69b71fe0251@embedded-brains.de> (raw)
In-Reply-To: <f1b75b77-2a0d-89af-d39d-45c6ffa74573@embedded-brains.de>

Sorry for the bad format in the previous mail. Here is the next attempt:

I would like to extend the RTEMS GDB remote target stub to support 
PowerPC (e500, e6500).  In the ARM support we have some magic register 
numbers:

https://git.rtems.org/rtems/tree/cpukit/libdebugger/rtems-debugger-arm.c#n132 


/*
  * Debugger registers layout.
  */
#define REG_R0 0
#define REG_R1 1
#define REG_R2 2
#define REG_R3 3
#define REG_R4 4
#define REG_R5 5
#define REG_R6 6
#define REG_R7 7
#define REG_R8 8
#define REG_R9 9
#define REG_R10 10
#define REG_R11 11
#define REG_R12 12
#define REG_SP 13
#define REG_LR 14
#define REG_PC 15
#define REG_CPSR 25

How can I find the corresponding numbers for the PowerPC? There is a 
comment in (gdb/ppc-tdep.h):

/* Register number constants. These are GDB internal register numbers; 
they are
  * not used for the simulator or remote targets. Extra SPRs (those 
other than
  * MQ, CTR, LR, XER, SPEFSCR) are given numbers above PPC_NUM_REGS. So are
  * segment registers and other target-defined registers. */
enum {
   PPC_R0_REGNUM = 0,
   PPC_F0_REGNUM = 32,

I cannot find the numbers which are used for remote targets. Are they 
defined by the XML files in gdb/features/rs6000?

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber@embedded-brains.de
PGP     : Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.


  reply	other threads:[~2017-11-29 10:53 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-29 10:39 Sebastian Huber
2017-11-29 10:53 ` Sebastian Huber [this message]
2017-12-02 21:49   ` Simon Marchi

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