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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: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
This commit is contained in:
Peter Maydell 2014-02-26 17:20:06 +00:00
parent d9ea7d290b
commit 1ed69e82b8
1 changed files with 4 additions and 1 deletions
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target-arm/translate-a64.c
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@ -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;
}