i386-linux.elf decompress does not need cto8

src/p_lx_elf.cpp

@@ -416,14 +416,8 @@ void PackLinuxElf32x86::addStubEntrySections(Filter const *ft)
     addLoader("FOLDEXEC", NULL);
 }
 
-void PackLinuxElf32x86::addLinkerSymbols(Filter const *ft)
+void PackLinuxElf32x86::addLinkerSymbols(Filter const */*ft*/)
 {
-    upx_byte *ptr_cto = getLoader();
-    int sz_cto = getLoaderSize();
-    if (0x20==(ft->id & 0xF0) || 0x30==(ft->id & 0xF0)) {  // push byte '?'  ; cto8
-        patch_le16(ptr_cto, sz_cto, "\x6a?", 0x6a + (ft->cto << 8));
-        checkPatch(NULL, 0, 0, 0);  // reset
-    }
 }
 
 int

src/stub/src/i386-linux.elf-entry.S

@@ -68,12 +68,12 @@ decompress:
 // // C callable decompressor
 // **************************************************************************/
 
-// /* Offsets to parameters, allowing for {push + pusha + call} */
+// /* Offsets to parameters, allowing for {pusha + call} */
-#define         O_INP   (4+ 8*4 +1*4)
+#define         O_INP   (8*4 +1*4)
-#define         O_INS   (4+ 8*4 +2*4)
+#define         O_INS   (8*4 +2*4)
-#define         O_OUTP  (4+ 8*4 +3*4)
+#define         O_OUTP  (8*4 +3*4)
-#define         O_OUTS  (4+ 8*4 +4*4)
+#define         O_OUTS  (8*4 +4*4)
-#define         O_PARAM (4+ 8*4 +5*4)
+#define         O_PARAM (8*4 +5*4)
 
 #define         INP     dword ptr [esp+O_INP]
 #define         INS     dword ptr [esp+O_INS]
@@ -85,7 +85,6 @@ section LEXEC009
         //;  empty section for commonality with l_lx_exec86.asm
 section LEXEC010
                 pusha
-                push '?'  // cto8 (sign extension does not matter)
                 // cld
 
                 mov     esi, INP
@@ -117,8 +116,6 @@ section LEXEC015
                 mov     edx, OUTS
                 mov     [edx], edi
 
-                pop edx  // cto8
-
                 mov [7*4 + esp], eax
                 popa
                 ret