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RE: [coldfire-gnu-discuss] dbg sprite configuration problems

  • To: <coldfire-gnu-discuss@xxxxxxxxxxxxxxxx>
  • Subject: RE: [coldfire-gnu-discuss] dbg sprite configuration problems
  • From: "Jaysen Roper" <jaysenroper@xxxxxxxxxxxxxxxxxxx>
  • Date: Wed, 20 Aug 2008 15:38:41 +0100
C:\Games\demo>m68k-elf-readelf -a demo.elf Yielded...

SECTION HEADERS
 [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf
Al
 [11] .stack            NOBITS          50000000 002000 001e00 00  WA  0   0
1

PROGRAM HEADERS
  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
  LOAD           0x000000 0x10010000 0x10010000 0x000d4 0x00428 RW  0x2000
  LOAD           0x0006d8 0x100146d8 0x10014400 0x00000 0x0c33c RW  0x2000
  LOAD           0x002000 0x50000000 0x50000000 0x00000 0x01e00 RW  0x2000
  LOAD           0x002000 0x60000000 0x60000000 0x1dcec 0x1dcec RWE 0x2000
  LOAD           0x020428 0x10010428 0x6001dcec 0x042b0 0x042b0 RW  0x2000

The only regions in the map file that start with 0x5000 are....

Name             Origin             Length
stacka           0x50000000         0x00001f00 
fram             0x50001f00         0x00000100

----------
I assumed that fram length of 256 bytes would give it ranges 1f00-1fff
inclusive.



Jaysen





-----Original Message-----
From: Carlos O'Donell [mailto:carlos@xxxxxxxxxxxxxxxx] 
Sent: 20 August 2008 14:51
To: Jaysen Roper
Cc: coldfire-gnu-discuss@xxxxxxxxxxxxxxxx
Subject: Re: [coldfire-gnu-discuss] dbg sprite configuration problems

Jaysen Roper wrote:
> m68k-elf-sprite: Got packet: 'm50001ff4,4'
> m68k-elf-sprite: Sent response: 'ffffffff'
> m68k-elf-sprite: Got packet: 'm50001ff8,4'
> m68k-elf-sprite: Sent response: 'ffffffff'
> m68k-elf-sprite: Got packet: 'm50001ffc,4'
> m68k-elf-sprite: Sent response: 'ffffffff'
> Cannot access memory at address 0x50002000 <<<<<<<<<<<<<< HERES MY ERROR

The address 0x50002000 is 1 byte outside of memory. If you use 
m68k-elf-readelf -a to examine your binary, do you see anything 
allocated to that address? If you compile your application with 
-Wl,-Map,app.map does app.map contian anything allocated to that address?

Cheers,
Carlos.
-- 
Carlos O'Donell
CodeSourcery
carlos@xxxxxxxxxxxxxxxx
(650) 331-3385 x716