From: Christoph Muellner <[email protected]> The cmo.prefetch instructions are nops for QEMU (no emulation of the memory hierarchy, no illegal instructions, no permission faults, no traps).
Add a comment noting where they would be decoded in case cbo.prefetch instructions become relevant in the future. Co-developed-by: Philipp Tomsich <[email protected]> Signed-off-by: Christoph Muellner <[email protected]> Signed-off-by: Daniel Henrique Barboza <[email protected]> Reviewed-by: Richard Henderson <[email protected]> Reviewed-by: Weiwei Li <[email protected]> --- target/riscv/insn32.decode | 1 + 1 file changed, 1 insertion(+) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 3788f86528..1aebd37572 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -134,6 +134,7 @@ addi ............ ..... 000 ..... 0010011 @i slti ............ ..... 010 ..... 0010011 @i sltiu ............ ..... 011 ..... 0010011 @i xori ............ ..... 100 ..... 0010011 @i +# cbo.prefetch_{i,r,m} instructions are ori with rd=x0 and not decoded. ori ............ ..... 110 ..... 0010011 @i andi ............ ..... 111 ..... 0010011 @i slli 00000. ...... ..... 001 ..... 0010011 @sh -- 2.39.2
