arm WFE: add some userland examples

2026-01-30 13:24:27 +01:00 · 2019-12-16 00:00:00 +00:00
parent 10946a7d80
commit 89a981aaf2
5 changed files with 119 additions and 2 deletions
--- a/userland/arch/aarch64/freestanding/linux/wfe.S
+++ b/userland/arch/aarch64/freestanding/linux/wfe.S
@@ -0,0 +1,12 @@
+/* https://cirosantilli.com/linux-kernel-module-cheat#arm-wfe-and-sev-instructions */
+
+.text
+.global _start
+_start:
+asm_main_after_prologue:
+    wfe
+
+    /* exit */
+    mov x0, 0
+    mov x8, 93
+    svc 0