From f830537f9e19485ccd104a509917d792114aebc5 Mon Sep 17 00:00:00 2001
From: anod <182859762@qq.com>
Date: Fri, 17 Mar 2023 17:43:00 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8A=8Afit=5Fsize=E7=9A=84=E7=AD=96=E7=95=A5?=
 =?UTF-8?q?=E5=86=8D=E6=94=B9=E5=9B=9E=E5=8E=BB?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 source/arm11/cheat.c | 74 +++++++++++++++++++++++---------------------
 1 file changed, 38 insertions(+), 36 deletions(-)

diff --git a/source/arm11/cheat.c b/source/arm11/cheat.c
index 0c12bea..9638fa5 100644
--- a/source/arm11/cheat.c
+++ b/source/arm11/cheat.c
@@ -337,11 +337,13 @@ static CodeLocation rom_fit_newsize( CodeLocation rom, int realend, int totalsiz
 {
     u32 size = realend + totalsize;
     
+    if( size > SIZE_32M ) 
+    {
     // get the biggest space that all bytes is 0
-    CodeLocation found=NULL, current=NULL;
-    int szfound=0, szcurrent=0;
-    int reallen = INSTR_LEN( realend );
-    instruction_t freeinstr = 0; // 0/0xffffffff will be free
+        CodeLocation found=NULL, current=NULL;
+        int szfound=0, szcurrent=0;
+        int reallen = INSTR_LEN( realend );
+        instruction_t freeinstr = 0; // 0/0xffffffff will be free
 
 #define START_FREE_BLOCK(n) {\
                                 current = rom+i;\
@@ -357,45 +359,45 @@ static CodeLocation rom_fit_newsize( CodeLocation rom, int realend, int totalsiz
                             szcurrent = 0;\
                         }
 
-    for( int i=0; i < reallen; ++i )
-    {
-        if( rom[i] == 0 )
+        for( int i=0; i < reallen; ++i )
         {
-            if( szcurrent == 0 ) 
+            if( rom[i] == 0 )
             {
-                START_FREE_BLOCK(0);
+                if( szcurrent == 0 ) 
+                {
+                    START_FREE_BLOCK(0);
+                }
+                else 
+                {
+                    if( freeinstr == 0 )// same block
+                        szcurrent += INSTR_SIZE;
+                    else END_FREE_BLOCK;
+                } 
             }
-            else 
+            else if( rom[i] == 0xffffffff )
             {
-                if( freeinstr == 0 )// same block
-                    szcurrent += INSTR_SIZE;
-                else END_FREE_BLOCK;
-            } 
+                if( szcurrent == 0xffffffff ) 
+                {
+                    START_FREE_BLOCK(0xffffffff);
+                }
+                else
+                {
+                    if( freeinstr == 0xffffffff )
+                        szcurrent += INSTR_SIZE;
+                    else END_FREE_BLOCK;
+                }
+            }
+            else if( szcurrent > 0 ) END_FREE_BLOCK;
         }
-        else if( rom[i] == 0xffffffff )
-        {
-            if( szcurrent == 0xffffffff ) 
-            {
-                START_FREE_BLOCK(0xffffffff);
-            }
-            else
-            {
-                if( freeinstr == 0xffffffff )
-                    szcurrent += INSTR_SIZE;
-                else END_FREE_BLOCK;
-            }
-        }
-        else if( szcurrent > 0 ) END_FREE_BLOCK;
-    }
 
-    // the zero-filled space is big enough, 3 is a guess value
-    if( szfound > totalsize * 3 )
-    {
-        return found + FIT_SPACE_RESERVED;
+        // the zero-filled space is big enough, 3 is a guess value
+        if( szfound > totalsize * 3 )
+        {
+            return found + FIT_SPACE_RESERVED;
+        }
+        // cannot find a good block
+        else return NULL;
     }
-    
-    // cannot find a good block
-    if( size > SIZE_32M ) return NULL;
 
     // grow cart volumn
     else if( szrom < size || nextPow2(size) != nextPow2(szrom) )