Commit 1ed69e82 authored by Peter Maydell's avatar Peter Maydell
Browse files

target-arm: A64: Implement WFI 



Implement the WFI instruction for A64; this just involves wiring
up the instruction, and adding a gen_a64_set_pc_im() which was
accidentally omitted from the A64 decoder top loop.

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: default avatarPeter Crosthwaite <peter.crosthwaite@xilinx.com>
parent d9ea7d29

target-arm/translate-a64.c

+4 −1
Original line number Diff line number Diff line
@@ -1080,9 +1080,11 @@ static void handle_hint(DisasContext *s, uint32_t insn, 
    switch (selector) {

    case 0: /* NOP */

        return;

    case 3: /* WFI */

        s->is_jmp = DISAS_WFI;

        return;

    case 1: /* YIELD */

    case 2: /* WFE */

    case 3: /* WFI */

    case 4: /* SEV */

    case 5: /* SEVL */

        /* we treat all as NOP at least for now */
@@ -9124,6 +9126,7 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu, 
            /* This is a special case because we don't want to just halt the CPU

             * if trying to debug across a WFI.

             */

            gen_a64_set_pc_im(dc->pc);

            gen_helper_wfi(cpu_env);

            break;

        }