stubs relayout: maze guard 36B, S6->0x8062160, banner->0x8062170

2026-09-11 07:44:19 +00:00
parent 474c3c8318
commit 72f23b43c9
3 changed files with 23 additions and 10 deletions
@@ -2,6 +2,9 @@
    .cpu cortex-a7
    .thumb
    @ maze entry logger: record lr/sp to mailbox 0x08062200, return 0.
+    @ Guard: if lr is outside known-good SBL/stub ranges, spin with
+    @ interrupts disabled instead of jumping into the void (post-mortem
+    @ via vec trap regs).
    .text
    .global maze_stub
 maze_stub:
@@ -10,4 +13,10 @@ maze_stub:
    str lr, [r12]
    str sp, [r12, #4]
    movs r0, #0
+    lsr r12, lr, #24
+    cmp r12, #0x08
+    bne maze_hang
    bx lr
+maze_hang:
+    cpsid i
+    b maze_hang