ebreak
Breakpoint exception
The EBREAK instruction is used by debuggers to cause control to be transferred back to a debugging environment. Unless overridden by an external debug environment, EBREAK raises a breakpoint exception and performs no other operation.
| As described in the C Standaxd Extension for Compressed Instructions, the c.ebreak instruction performs the same operation as the EBREAK instruction. |
EBREAK causes the receiving privilege mode’s epc register to be set to the address of the EBREAK instruction itself, not the address of the following instruction. As EBREAK causes a synchronous exception, it is not considered to retire, and should not increment the minstret CSR.
Execution
-
IDL
-
Sail
if (TRAP_ON_EBREAK) {
raise_precise(ExceptionCode::Breakpoint, mode(), $pc);
} else {
eei_ebreak();
}{
handle_mem_exception(PC, E_Breakpoint());
RETIRE_FAIL
}