[Bug other/47696] New: [AVR] Compilation for atmega2560 produces incomplete interrupt vector table (USART2,3)

[Bug other/47696] New: [AVR] Compilation for atmega2560 produces incomplete interrupt vector table (USART2,3)

[jlacerte at curvesystems dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47696

           Summary: [AVR] Compilation for atmega2560 produces incomplete
                    interrupt vector table (USART2,3)
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jlacerte@curvesystems.com


avr-gcc -v
Using built-in specs.
COLLECT_GCC=avr-gcc
COLLECT_LTO_WRAPPER=/home/joseph/local/avr/libexec/gcc/avr/4.5.2/lto-wrapper
Target: avr
Configured with: ../configure --prefix=/home/joseph/local/avr --target=avr
--enable-languages=c --disable-nls --disable-libssp --with-dwarf2
Thread model: single
gcc version 4.5.2 (GCC)


Produced vector table (dump by stk500v2 bootloader):

[...]
49 - 0060 = 94 0C 00 87 jmp 000087 >00010E TIMER5 COMPB
50 - 0062 = 94 0C 00 87 jmp 000087 >00010E TIMER5 COMPC
51 - 0064 = 94 0C 00 87 jmp 000087 >00010E TIMER5 OVF
52 - 0066 = 24 11 BE 1F  USART2 RX
53 - 0068 = EF CF E2 D1 rjmp  2FCF >00606E USART2 UDRE
54 - 006A = BF DE BF CD  USART2 TX
55 - 006C = E0 00 BF 0C rjmp  2000 >0040D8 USART3 RX
56 - 006E = E0 12 E0 A0 rjmp  2012 >004100 USART3 UDRE
57 - 0070 = E0 B2 EF E4 rjmp  20B2 >004244 USART3 TX
Bootloader>


changing file gcc/config/avr/avr-devices.c line #190 from:
 { "atmega2560",           ARCH_AVR6, "__AVR_ATmega2560__",        0, 0x0200,
"m2561" },

To:
 { "atmega2560",           ARCH_AVR6, "__AVR_ATmega2560__",        0, 0x0200,
"m2560" },

seems to solve the problem:

[...]
49 - 0060 = 94 0C 00 93 jmp 000093 >000126 TIMER5 COMPB
50 - 0062 = 94 0C 00 93 jmp 000093 >000126 TIMER5 COMPC
51 - 0064 = 94 0C 00 93 jmp 000093 >000126 TIMER5 OVF
52 - 0066 = 94 0C 02 4D jmp 00024D >00049A USART2 RX
53 - 0068 = 94 0C 00 93 jmp 000093 >000126 USART2 UDRE
54 - 006A = 94 0C 00 93 jmp 000093 >000126 USART2 TX
55 - 006C = 94 0C 00 93 jmp 000093 >000126 USART3 RX
56 - 006E = 94 0C 00 93 jmp 000093 >000126 USART3 UDRE
57 - 0070 = 94 0C 00 93 jmp 000093 >000126 USART3 TX
Bootloader>


Please review this section, I have limited understanding of the
compilation/linking mechanism.

Thanks,

JL

[Bug target/47696] [AVR] Compilation for atmega2560 produces incomplete interrupt vector table (USART2,3)

[anitha.boyapati at atmel dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47696

Anitha Boyapati <anitha.boyapati at atmel dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anitha.boyapati at atmel
                   |                            |dot com

--- Comment #1 from Anitha Boyapati <anitha.boyapati at atmel dot com> 2011-02-12 18:32:28 UTC ---
(In reply to comment #0)

> changing file gcc/config/avr/avr-devices.c line #190 from:
>  { "atmega2560",           ARCH_AVR6, "__AVR_ATmega2560__",        0, 0x0200,
> "m2561" },
> 
> To:
>  { "atmega2560",           ARCH_AVR6, "__AVR_ATmega2560__",        0, 0x0200,
> "m2560" },
> 
> seems to solve the problem:

The fix is correct. The last column points to corresponding library. I presume
this is a typo.

Thanks for the analysis!

[Bug target/47696] [AVR] Compilation for atmega2560 produces incomplete interrupt vector table (USART2,3)

[choudary.omar at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47696

--- Comment #2 from Omar Choudary <choudary.omar at gmail dot com> 2011-02-14 14:51:48 UTC ---
Created attachment 23337
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23337
Patch based on the proposed solution. Seems to fix the problem.

Just a patch based on the solution described.

[Bug target/47696] [AVR] Compilation for atmega2560 produces incomplete interrupt vector table (USART2,3)

[aesok at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47696

--- Comment #3 from aesok at gcc dot gnu.org 2011-02-14 15:49:39 UTC ---
Author: aesok
Date: Mon Feb 14 15:49:35 2011
New Revision: 170137

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170137
Log:
    PR target/47696
    * config/avr/avr-devices.c (avr_mcu_types): Fix ATmega2560 device
    description.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr-devices.c

[Bug target/47696] [AVR] Compilation for atmega2560 produces incomplete interrupt vector table (USART2,3)

[aesok at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47696

aesok at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |aesok at gcc dot gnu.org
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.0

--- Comment #4 from aesok at gcc dot gnu.org 2011-02-14 15:51:18 UTC ---
Fixed.