...

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/arm/jump-patch.h b/lib/arm/jump-patch.h
new file mode 100644
index 0000000..b19e90f
--- /dev/null
+++ b/lib/arm/jump-patch.h
@@ -0,0 +1,18 @@
+#pragma once
+#include "dis.h"
+#define MAX_JUMP_PATCH_SIZE 8
+#define MAX_REWRITTEN_SIZE (12 * 4) /* actually should be less */
+
+static inline int jump_patch_size(uintptr_t pc, uintptr_t dpc,
+                                  struct arch_dis_ctx arch) {
+    return 8;
+}
+
+static inline void make_jump_patch(void **codep, uintptr_t pc, uintptr_t dpc,
+                                   struct arch_dis_ctx arch) {
+    if (arch.pc_low_bit)
+        op32(codep, 0xf000f8df);
+    else
+        op32(codep, 0xe51ff004);
+    op32(codep, (uint32_t) pc);
+}