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arduino / toolchain-avr

The AVR toolchain used by the Arduino IDE
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Missing Support for Tiny 4/5/9/10/20 (Reduced Core TinyAVR) #42

Closed sleemanj closed 7 years ago

sleemanj commented 7 years ago

The avr-gcc 4.9.2 in IDE 1.6.13 does still not know about the ATTiny 4/5/9/10/20 Reduced Core TinyAVR chips.

The official avr-gcc 4.9.2 does

Official

$ avr-gcc -Wa,-mlist-devices --target-help 2>&1 | grep "tiny4 "
atxmega128a1u atxmega128a4u attiny4 attiny5 attiny9 attiny10 attiny20

Arduino 1.6.13

$ avr-gcc -Wa,-mlist-devices --target-help 2>&1 | grep "tiny4 "
( Nothing Found )
sleemanj commented 7 years ago

I think the problem is that the build process isn't bringing in the "avrtiny" gcc core for some reason. I can't see a configuration option readily, maybe this is a discrepancy with the GPL released sources not matching the Atmel (Microchip) build of gcc?

Official Build

avr8-gnu-toolchain-linux_x86_64$ ./bin/avr-gcc --target-help | grep avrtiny
               avrtiny   - AVR Tiny core with 16 gp registers
avrxmega2 avrxmega3 avrxmega4 avrxmega5 avrxmega6 avrxmega7 avrtiny
avrtiny:

IDE 1.6.13 Build

arduino-1.6.13/hardware/tools/avr$ ./bin/avr-gcc --target-help  | grep avrtiny
(Nothing found)
sleemanj commented 7 years ago

It seems that building avr-gdb nukes the avrtiny chips.

Doing a grep for "avtiny" in the objdir before and after...

diff -u0 BEFOREGDB  AFTERGDB
--- BEFOREGDB      2016-12-02 20:24:35.236856576 +1300
+++ AFTERGDB      2016-12-02 20:24:43.252655058 +1300
@@ -1,3 +0,0 @@
-Binary file avr/bin/ld matches
-Binary file avr/bin/ld.bfd matches
-Binary file avr/bin/as matches
@@ -5,3 +1,0 @@
-Binary file bin/avr-as matches
-Binary file bin/avr-ld matches
-Binary file bin/avr-ld.bfd matches
@@ -39,2 +32,0 @@
-Binary file share/info/bfd.info matches
-share/info/as.info:     Instruction set avrtiny is for the ATtiny4/5/9/10/20/40

Full sets of matches below.

Before Building gdb

Binary file avr/bin/ld matches
Binary file avr/bin/ld.bfd matches
Binary file avr/bin/as matches
Binary file bin/avr-c++ matches
Binary file bin/avr-as matches
Binary file bin/avr-ld matches
Binary file bin/avr-ld.bfd matches
Binary file bin/avr-g++ matches
Binary file bin/avr-gcc matches
Binary file bin/avr-cpp matches
Binary file bin/avr-gcc-4.9.2 matches
lib/gcc/avr/4.9.2/device-specs/specs-attiny4:# Auto-generated specs for AVR device attiny4 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny4: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny4: %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-avrtiny:# Auto-generated specs for AVR core architecture avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-avrtiny: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny40:# Auto-generated specs for AVR device attiny40 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny40:  -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny40:  %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny10:# Auto-generated specs for AVR device attiny10 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny10:  -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny10:  %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny5:# Auto-generated specs for AVR device attiny5 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny5: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny5: %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny9:# Auto-generated specs for AVR device attiny9 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny9: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny9: %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny20:# Auto-generated specs for AVR device attiny20 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny20:  -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny20:  %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
Binary file lib/gcc/avr/4.9.2/avrtiny/libgcc.a matches
Binary file lib/gcc/avr/4.9.2/avrtiny/libgcov.a matches
Binary file libexec/gcc/avr/4.9.2/lto1 matches
Binary file libexec/gcc/avr/4.9.2/cc1 matches
Binary file libexec/gcc/avr/4.9.2/cc1plus matches
share/info/gcc.info:     'avrtiny'
share/info/gcc.info:     for MCU='avrtiny', 'avrxmega2', 'avrxmega4', 'avrxmega5',
Binary file share/info/bfd.info matches
share/info/as.info:     Instruction set avrtiny is for the ATtiny4/5/9/10/20/40
share/man/man1/avr-g++.1:.ie n .IP """avrtiny""" 4
share/man/man1/avr-g++.1:.el .IP "\f(CWavrtiny\fR" 4
share/man/man1/avr-g++.1:.IX Item "avrtiny"
share/man/man1/avr-g++.1:for \fImcu\fR=\f(CW\*(C`avrtiny\*(C'\fR, \f(CW\*(C`avrxmega2\*(C'\fR, \f(CW\*(C`avrxmega4\*(C'\fR,
share/man/man1/avr-gcc.1:.ie n .IP """avrtiny""" 4
share/man/man1/avr-gcc.1:.el .IP "\f(CWavrtiny\fR" 4
share/man/man1/avr-gcc.1:.IX Item "avrtiny"
share/man/man1/avr-gcc.1:for \fImcu\fR=\f(CW\*(C`avrtiny\*(C'\fR, \f(CW\*(C`avrxmega2\*(C'\fR, \f(CW\*(C`avrxmega4\*(C'\fR,
x86_64-pc-linux-gnu/avr/include/bfd.h:#define bfd_mach_avrtiny   100

After Building gdb

Binary file bin/avr-c++ matches
Binary file bin/avr-g++ matches
Binary file bin/avr-gcc matches
Binary file bin/avr-cpp matches
Binary file bin/avr-gcc-4.9.2 matches
lib/gcc/avr/4.9.2/device-specs/specs-attiny4:# Auto-generated specs for AVR device attiny4 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny4: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny4: %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-avrtiny:# Auto-generated specs for AVR core architecture avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-avrtiny: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny40:# Auto-generated specs for AVR device attiny40 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny40:  -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny40:  %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny10:# Auto-generated specs for AVR device attiny10 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny10:  -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny10:  %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny5:# Auto-generated specs for AVR device attiny5 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny5: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny5: %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny9:# Auto-generated specs for AVR device attiny9 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny9: -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny9: %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
lib/gcc/avr/4.9.2/device-specs/specs-attiny20:# Auto-generated specs for AVR device attiny20 (core avrtiny, 16-bit SP)
lib/gcc/avr/4.9.2/device-specs/specs-attiny20:  -mmcu=avrtiny
lib/gcc/avr/4.9.2/device-specs/specs-attiny20:  %{!mmcu=avr*: %<mmcu=* -mmcu=avrtiny} %<msp8
Binary file lib/gcc/avr/4.9.2/avrtiny/libgcc.a matches
Binary file lib/gcc/avr/4.9.2/avrtiny/libgcov.a matches
Binary file libexec/gcc/avr/4.9.2/lto1 matches
Binary file libexec/gcc/avr/4.9.2/cc1 matches
Binary file libexec/gcc/avr/4.9.2/cc1plus matches
share/info/gcc.info:     'avrtiny'
share/info/gcc.info:     for MCU='avrtiny', 'avrxmega2', 'avrxmega4', 'avrxmega5',
share/man/man1/avr-g++.1:.ie n .IP """avrtiny""" 4
share/man/man1/avr-g++.1:.el .IP "\f(CWavrtiny\fR" 4
share/man/man1/avr-g++.1:.IX Item "avrtiny"
share/man/man1/avr-g++.1:for \fImcu\fR=\f(CW\*(C`avrtiny\*(C'\fR, \f(CW\*(C`avrxmega2\*(C'\fR, \f(CW\*(C`avrxmega4\*(C'\fR,
share/man/man1/avr-gcc.1:.ie n .IP """avrtiny""" 4
share/man/man1/avr-gcc.1:.el .IP "\f(CWavrtiny\fR" 4
share/man/man1/avr-gcc.1:.IX Item "avrtiny"
share/man/man1/avr-gcc.1:for \fImcu\fR=\f(CW\*(C`avrtiny\*(C'\fR, \f(CW\*(C`avrxmega2\*(C'\fR, \f(CW\*(C`avrxmega4\*(C'\fR,
x86_64-pc-linux-gnu/avr/include/bfd.h:#define bfd_mach_avrtiny   100
sleemanj commented 7 years ago

Eureka! make install in gdb.build.bash needs to be make install-gdb

For the reason we can look in the official build script 

task_start "Installing GDB for $1... "
 # New versions of gdb share the same configure/make scripts with binutils. Running make install-gdb to
 # install just the gdb binaries.
 make $PARALLEL_JOBS install-gdb > make.install.out 2>&1 || task_error "Installing GDB for $1 failed. See make.install.out." "make.install.out"

In short, make install for (avr-)gdb will also install another, older, version of binutils, which doesn't have the proper support for the avrtiny (4/5/9/10 etc Reduced Core TinyAVR) in it.

cmaglie commented 7 years ago

fixed by #43