Re: memory region documentation

[Eli Zaretskii <eliz@delorie.com>]

> From: jtc@redback.com (J.T. Conklin)
> Date: 21 Nov 2000 17:06:12 -0800
> 
> >> Can you tell me where you'd like me to put this chapter?  I assume
> >> it's a chapter, since it doesn't seem to be a good fit into any of
> >> the existing chapters --- especially if we start adding more varied
> >> attributes.
> 
> Eli> It looks like between "Native Debugging" and "Support Libraries"
> Eli> would be a good place.
> 
> Eh?  Those chapters are in the internals document, this is intended to
> be user documentation.

Ouch!  Whatever got me to think you were talking about gdbint.texinfo?
Sorry.

For gdb.texinfo, it looks like it should be a section in the
"Examining Data" chapter (node name "Data"), either as a section after
"Memory", or as a subsection of "Memory".  I'm puzzled why did you
think it didn't fit into the "Data" chapter.
From d_iftikhar@hotmail.com Wed Nov 22 02:35:00 2000
From: "danish iftikhar" <d_iftikhar@hotmail.com>
To: fnasser@cygnus.com
Cc: grante@visi.com, gdb@sourceware.cygnus.com
Subject: Re: Jeeni & ARM720T with GDB
Date: Wed, 22 Nov 2000 02:35:00 -0000
Message-id: <F2693AmsfGdMNFmWAFs00000388@hotmail.com>
X-SW-Source: 2000-11/msg00227.html
Content-length: 4005

>From: Fernando Nasser <fnasser@cygnus.com>
>To: danish iftikhar <d_iftikhar@hotmail.com>
>CC: grante@visi.com
>Subject: Re: Jeeni & ARM720T with GDB
>Date: Wed, 22 Nov 2000 07:30:20 +0000
>
>Danish,
>
>I believe we need mode information.  The log seems normal to me.
>
>What is the value of the PC  (P/x $pc) after the load?
>
>Can you do a "x/30i $pc" so we see the startup code?
>
>When you do "break main", what is printed?
>
>And, maybe before all that, what was the exact command you've used to 
>compile?
>
>What is the output when you add "-v" to your gcc command?
>
>Fernando
>
***************************************************
  Hi

   i am enclosing all the information that u have asked for :

  arm-elf-gcc -v
Reading specs from 
/proj/danish/ECOS_EP7211/tools/H-i686-pc-linux-gnu/lib/gcc-lib/arm-elf/2.95.2/specs
gcc version 2.95.2 19991024 (release)

the command i am using to compile is :
CXX = arm-elf-gcc -mcpu=arm7tdmi -D__EDB7211


arm-elf-gdb -v
GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-elf".


After load Pc shows the address : 0x8060

The start uo code is :
(gdb) x/30i $pc
0x8060 <warm_reset>:    mrs     r7, cpsr
0x8064 <warm_reset+4>:  and     r7, r7, #31     ; 0x1f
0x8068 <warm_reset+8>:  cmp     r7, #19 ; 0x13
0x806c <warm_reset+12>: beq     0x80a0 <start>
0x8070 <warm_reset+16>: mov     r0, #0  ; 0x0
0x8074 <warm_reset+20>: str     r0, [r0, #64]
0x8078 <warm_reset+24>: ldr     r1, [pc, #4c0]  ; 0x8540 <_eCos_id+20>
0x807c <warm_reset+28>: ldr     r2, [r1, #4]
0x8080 <warm_reset+32>: str     r2, [r0, #4]
0x8084 <warm_reset+36>: ldr     r2, [r1, #36]
0x8088 <warm_reset+40>: str     r2, [r0, #36]
0x808c <warm_reset+44>: ldr     r2, [r1, #8]
0x8090 <warm_reset+48>: str     r2, [r0, #8]
0x8094 <warm_reset+52>: ldr     r2, [r1, #64]
0x8098 <warm_reset+56>: str     r2, [r0, #40]
0x809c <warm_reset+60>: swi     0x00000000
0x80a0 <start>: ldr     r0, [pc, #474]  ; 0x851c <.init_flag>
0x80a4 <start+4>:       ldr     r1, [r0]
0x80a8 <start+8>:       cmp     r1, #0  ; 0x0
0x80ac <start+12>:      bne     0x80a8 <start+8>
0x80b0 <start+16>:      ldr     r1, [pc, #c8]   ; 0x8180 <init_done>
0x80b4 <start+20>:      str     r1, [r0]
0x80b8 <start+24>:      mov     r0, #0  ; 0x0
0x80bc <start+28>:      ldr     r1, [pc, #454]  ; 0x8518 
<.__exception_handlers>
0x80c0 <start+32>:      cmp     r7, #19 ; 0x13
0x80c4 <start+36>:      beq     0x80d0 <start+48>
0x80c8 <start+40>:      ldr     r2, [r1, #40]
0x80cc <start+44>:      str     r2, [r0, #40]
0x80d0 <start+48>:      ldr     r2, [r1, #24]
0x80d4 <start+52>:      str     r2, [r0, #24]

  i am not able to do step or cont but using stepi i went through this 
startup function . It seems to loop around between 0x815c & 0x8164 and is 
not going ahead of that .
the code at this address is as follows :

0x8154  <start+180>:            cmp     r1, r2
-       0x8158  <start+184>:            beq     0x8168 <start+200>
-       0x815c  <start+188>:            str     r0, [r1], #4
-       0x8160  <start+192>:            cmp     r1, r2
-       0x8164  <start+196>:            bne     0x815c <start+188>
-       0x8168  <start+200>:            bl      0x1f194 <hal_hardware_init>
-       0x816c  <start+204>:            bl      0x1ee10 
<cyg_hal_invoke_constructors>
-       0x8170  <start+208>:            bl      0x1f358 <cyg_start>


umm when i do a break main , the reply is :

gdb) break main
Breakpoint 1 at 0x8558: file App.c

  Hoping to get an early reply from your side

thanks
danish.


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