Hello,
for a RISC-V simple executable project ,

I am encountering an "illegal instruction" error when using 'aes32esi'. The code compiles without any errors, but the error occurs at runtime.


SEGGER setup:

• arm_assembler_variant = "SEGGER"
  
• asm_additional_options = "-target-feature;+zkne;-target-feature;+zknd;-target-feature;-zscrypto"
  
• c_additional_options = "-target-feature;+zkne;-target-feature;+zknd"
  

error :
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.section .text
.global myfunc
myfunc:
# a0 = const char *str
li x0, 0 # i = 0
00000013 nop
li x1, 1 # i = 0
00100093 li ra, 1
li x2, 1 # i = 0
00100113 li sp, 1
aes32esi x1, x2, x1, 2
A21100B3 ??????




code example to reproduce the error :
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//c-code file main.c
/*********************************************************************

#include <stdio.h>
extern void myfunc(void);
int main(void) {
myfunc();
int i;

for (i = 0; i < 100; i++) {
printf("Hello World %d!\n", i);
}
do {
i++;
} while (1);
}

//assembly file f1.S
/*********************************************************************
.section .text
.global myfunc
myfunc:
# a0 = const char *str
li x0, 0 # i = 0
li x1, 1 # i = 0
li x2, 1 # i = 0
aes32esi x1, x2, x1, 2


ret # Return back via the return address register