Resource: LCE13 Name: GNU Toolchain - Library Performance Date: 09-07-2013 Speaker: Matthew Gretton-Dann Video: https://www.youtube.com/watch?v=6zHMLGIpNGE

1. Linaro Connect Europe 2013
Developer Tools
&
Library Performance

2. Linaro Connect Europe 2013

3. Linaro Connect Europe 2013
Developer Tools
● binutils
– as
– ld
● gdb
● QEMU

4. Linaro Connect Europe 2013
Library Performance
● glibc and eglibc
– libc
– libm
● newlib
● Others as required e.g. multimedia codecs

5. Linaro Connect Europe 2013
What have we been doing?
● binutils
– Testsuite now passes cleanly on trunk
– ARM indirect function support fixed
– AArch64 GC sections and gprof support
– Outstanding bugs triaged, many fixed
● gdb
– Progress on testsuite improvements
– Outstanding bugs triaged, many fixed

6. Linaro Connect Europe 2013
What have we been doing?
2012.12 2013.01 2013.02 2013.03 2013.04 2013.05 2013.06
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binutils patches accepted
Patches

7. Linaro Connect Europe 2013
What have we been doing?
2012.12 2013.01 2013.02 2013.03 2013.04 2013.05 2013.06
0
1
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gdb patches accepted
Patches

8. Linaro Connect Europe 2013
What have we been doing?
● QEMU
– Supporting ARMv8 AArch32 instructions
– KVM work outside the remit of TCWG

9. Linaro Connect Europe 2013
What have we been doing?
● glibc and eglibc
– ARMv7 memcpy implementation with indirect
– function support
● newlib
– ARMv7 memcpy implementation
– ARMv7 strlen implementation

10. Linaro Connect Europe 2013
What have we been doing?

11. Linaro Connect Europe 2013
What have we been doing?

12. Linaro Connect Europe 2013
What are we going to do next?
● binutils
– AArch64 indirect function support
– BFD Verilog hex 64bit support
● gdb
– Resolve testsuite failures on ARM
– Improve remote debug experience
● QEMU
– Further ARMv8 AArch32 support

13. Linaro Connect Europe 2013
What are we going to do next?
● glibc and eglibc
– ARMv7 strlen implementation
– Improve libm performance
– Improve malloc performance
● Whatever you need us to do!
– Suggestions?