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rv32i: transition llvm_asm! to asm! #2363

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Merged
merged 5 commits into from
Feb 5, 2021
Merged

rv32i: transition llvm_asm! to asm! #2363

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988fd70
rv32i: transition switch_to_process from llvm_asm! to asm!
lschuermann Jan 18, 2021
f9a3563
rv32i switch_to_process: pass process state struct in specific reg
lschuermann Jan 18, 2021
9aa145d
rv32i: remove abort function
lschuermann Jan 18, 2021
dcac512
rv32i: remove llvm_asm feature
lschuermann Jan 18, 2021
20c0698
arch: rv32i: remove " in asm
bradjc Feb 4, 2021
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rv32i: remove abort function 
This potentially dangerous function is not referenced anywhere and
hence can be removed, reducing the amount of unsafe code.
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@lschuermann @bradjc
lschuermann authored and bradjc committed Feb 4, 2021
commit 9aa145d2a8887fd9fc9250418d6315d1eef1c7cd
17 changes: 0 additions & 17 deletions arch/rv32i/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -384,23 +384,6 @@ pub extern "C" fn _start_trap() {
}
}

/// Ensure an abort symbol exists.
#[cfg(all(target_arch = "riscv32", target_os = "none"))]
#[link_section = ".init"]
#[export_name = "abort"]
pub extern "C" fn abort() {
unsafe {
llvm_asm! ("
// Simply go back to the start as if we had just booted.
j _start
"
:
:
:
: "volatile");
}
}

/// Print a readable string for an mcause reason.
pub unsafe fn print_mcause(mcval: csr::mcause::Trap, writer: &mut dyn Write) {
match mcval {
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