Thanks!
If there is a way to compile binaries with gcc to run under CHERIbsd?
Vadim
-- Senior Research Associate Department of Computer Science and Technology University of Cambridge http://zaliva.org/
________________________________ From: Alex Coplan via Gnu-morello gnu-morello@op-lists.linaro.org Sent: Monday, June 20, 2022 1:47 To: Vadim Zaliva vz231@cam.ac.uk Cc: gnu-morello@op-lists.linaro.org gnu-morello@op-lists.linaro.org Subject: [Gnu-morello] Re: binary release of the GNU Toolchain for Morello (version: 10.1.Morello-Alp1
Hi Vadim,
On 18/06/2022 01:03, Vadim Zaliva via Gnu-morello wrote:
I am very excited about the binary release of gcc-toolchain, but I run into problems trying to compile something as simple as:
int main() { return 0; }
$ ~/morello-gnu/bin/aarch64-none-elf-gcc -march=morello -O0 -nostdlib hello.c /home/lord/morello-gnu/bin/../lib/gcc/aarch64-none-elf/10.1.0/../../../../aarch64-none-elf/bin/ld: warning: cannot find entry symbol _start; defaulting to 0000000000400000
$ ~/morello-gnu/bin/aarch64-none-elf-gcc -march=morello -O0 hello.c /home/lord/morello-gnu/bin/../lib/gcc/aarch64-none-elf/10.1.0/../../../../aarch64-none-elf/bin/ld: /home/lord/morello-gnu/bin/../lib/gcc/aarch64-none-elf/10.1.0/../../../../aarch64-none-elf/lib/hybridcap/libc.a(lib_a-exit.o): in function `exit': /data/jenkins/workspace/GNU-toolchain/morello-trunk/src/newlib-cygwin/newlib/libc/stdlib/exit.c:70: undefined reference to `_exit' /home/lord/morello-gnu/bin/../lib/gcc/aarch64-none-elf/10.1.0/../../../../aarch64-none-elf/bin/ld: /home/lord/morello-gnu/bin/../lib/gcc/aarch64-none-elf/10.1.0/../../../../aarch64-none-elf/lib/hybridcap/crt0.o: in function `_start': /data/jenkins/workspace/GNU-toolchain/morello-trunk/src/newlib-cygwin/libgloss/aarch64/crt0.S:360: undefined reference to `__init_global_caps' /home/lord/morello-gnu/bin/../lib/gcc/aarch64-none-elf/10.1.0/../../../../aarch64-none-elf/bin/ld: /data/jenkins/workspace/GNU-toolchain/morello-trunk/src/newlib-cygwin/libgloss/aarch64/crt0.S:361: undefined reference to `__processRelocs' /home/lord/morello-gnu/bin/../lib/gcc/aarch64-none-elf/10.1.0/../../../../aarch64-none-elf/bin/ld: /data/jenkins/workspace/GNU-toolchain/morello-trunk/src/newlib-cygwin/libgloss/aarch64/crt0.S:365: undefined reference to `initialise_monitor_handles' collect2: error: ld returned 1 exit status
Any suggestions on what I am doing wrong?
You need to supply a "spec" file to GCC when using the baremetal (aarch64-none-elf) toolchain. I usually tend to use -specs=aem-ve.specs when building small baremetal test programs for Morello.
Also, I think it mentions that pure and hybrid capabilities modes are supported, but I could not find option to specify which one to use.
Yes. For purecap, you need -march=morello+c64 -mabi=purecap. For hybrid, it's just -march=morello.
Hope that helps.
Alex
Thanks!
Vadim
-- Senior Research Associate Department of Computer Science and Technology University of Cambridge https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fzaliva.org%...
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