Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

riscv64imac-unknown-none-elf cross compiler got "error: instruction requires the following: 'M' (Integer Multiplication and Division)" #30

Open
elliott10 opened this issue Mar 24, 2022 · 1 comment
Open

riscv64imac-unknown-none-elf cross compiler got "error: instruction requires the following: 'M' (Integer Multiplication and Division)" #30

elliott10 opened this issue Mar 24, 2022 · 1 comment

Comments

@elliott10
Copy link

When I cross-compile RISCV assembly instructions in file.asm with "rustc 1.60.0-nightly (5e57faa78 2022-01-19) riscv64imac-unknown-none-elf" toolchain.
I got the following error:

error: instruction requires the following: 'M' (Integer Multiplication and Division)
        mul t0, t0, a0
        ^

Please help， How should I avoid this error ?
@sslime336
Copy link

Try adding this to your asm file(hope this would work):

.attribute arch, "rv64gc"

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@elliott10 @sslime336