From 51abc269b3679b9cb0208779042a0ecec9eb4da8 Mon Sep 17 00:00:00 2001
From: Tsuda Kageyu <tsuda.kageyu@gmail.com>
Date: Tue, 12 May 2015 14:32:16 +0900
Subject: [PATCH] Add some comments.

---
 src/trampoline.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/trampoline.c b/src/trampoline.c
index e67a097f..3f9f8db9 100644
--- a/src/trampoline.c
+++ b/src/trampoline.c
@@ -230,7 +230,7 @@ BOOL CreateTrampolineFunction(PTRAMPOLINE ct)
             {
                 UINT8 cond = ((hs.opcode != 0x0F ? hs.opcode : hs.opcode2) & 0x0F);
 #ifdef _M_X64
-                // Invert the condition.
+                // Invert the condition in x64 mode to simplify the conditional jump logic.
                 jcc.opcode  = 0x71 ^ cond;
                 jcc.address = dest;
 #else
@@ -253,9 +253,11 @@ BOOL CreateTrampolineFunction(PTRAMPOLINE ct)
         if (pOldInst < jmpDest && copySize != hs.len)
             return FALSE;
 
+        // Trampoline function is too large.
         if ((newPos + copySize) > TRAMPOLINE_MAX_SIZE)
             return FALSE;
 
+        // Trampoline function has too many instructions.
         if (ct->nIP >= ARRAYSIZE(ct->oldIPs))
             return FALSE;