improved generic payload entry point

2020-02-11 20:51:04 -05:00
parent 33f3ab9a0d
commit a6ddec511a
8 changed files with 46 additions and 68 deletions
--- a/c8_remote/lib/payload/payload_entry.S
+++ b/c8_remote/lib/payload/payload_entry.S
@@ -0,0 +1,17 @@
+.extern entry_sync
+.extern entry_async
+.extern load_sync_entry
+
+.global _start
+.section .text
+_start:
+    mov     x10,        x30
+    bl      load_sync_entry
+    mov     x30,        x10
+
+    # if we came from the synchronous entry point, branch to entry_sync
+    cmp     x9,         x10
+    b.eq    entry_sync
+
+    # else branch to the payload's async entry points
+    b       entry_async