From: chaoskagami <chaos.kagami@gmail.com>
Date: Sat, 11 Jun 2016 15:45:02 +0000 (-0400)
Subject: Fix up a few bugs for something not yet exposed to the assembler, hopefully fix TWL... 
X-Git-Tag: v0.0.9~10
X-Git-Url: https://chaos.moe/g/?a=commitdiff_plain;h=4434cb0f3447b085418fd024039f75be61ad3c37;p=corbenik%2Fcorbenik.git

Fix up a few bugs for something not yet exposed to the assembler, hopefully fix TWL patches
---

diff --git a/host/bytecode_asm.py b/host/bytecode_asm.py
index 1915043..0dd38dc 100755
--- a/host/bytecode_asm.py
+++ b/host/bytecode_asm.py
@@ -278,6 +278,8 @@ def parse_op(token_list, instr_offs):
 			val = bytearray(struct.pack(">H", instr_offs[num]))
 			val.reverse()
 			return bytearray.fromhex("87") + val
+	elif token_list[0] == "n3ds": # Sets the eq flag if this is an n3ds.
+		return bytearray.fromhex("10")
 
 def pad_zero_r(x, c):
 	while len(x) < c:
diff --git a/patch/twl_fix.pco b/patch/twl_fix.pco
index 006ec73..f556ee8 100644
--- a/patch/twl_fix.pco
+++ b/patch/twl_fix.pco
@@ -3,86 +3,80 @@
 # $ver  01
 # $uuid 34
 
-# TODO - Make dynamic. Not that hard, but some 
-#        fixes need more context bytes than on Steveice10's
-#        pastebin
-
-# Relative to twl_firm (0)
+# TODO - Use proper section
 rel  twl
 
 ###########################################
-# New3ds
 
 # Disable main signature checks (1)
-seek  00165D64
-test  C117491C31D0
-jmpne 20
-set   00204EB070BD
+find C117491C31D0
+set  00204EB070BD
+rewind
 
-# Patch RSA function to not report invalid signatures (5)
-seek 0017474A
+# Patch RSA function to not report invalid signatures (4)
+# TODO - Check O3DS
+find 18ee0020
+fwd  02
 set  0120
+rewind
 
-# Disable header Nintendo logo check (not generally needed) (7)
-seek 0017553E
+# Disable header Nintendo logo check (not generally needed) (8)
+# TODO - Check O3DS
+find c03006f0
+fwd  02
 set  00200000
+rewind
 
-# Disable whitelist check (9)
-seek 001756A0
+# Disable whitelist check (12)
+find FFF7B6FB
 set  00200000
+rewind
 
-# Disable cartridge blacklist check (mostly, if not entirely, demo carts) (11)
-seek 00175A8E
+# Disable cartridge blacklist check (mostly, if not entirely, demo carts) (15)
+# TODO - Check O3DS
+find 012520000ef0
+fwd  04
 set  01200000
+rewind
 
-# Disable save type check (13)
-seek 00175A9A
-set  01200000
-
-# Disable DSi cartridge save exploit check (15)
-seek 00175AA6
-set  01200000
-
-# Stub function commonly used to compare SHA hashes to always succeed (17)
-seek 00175B92
+# Stub function commonly used to compare SHA hashes to always succeed (19)
+find 10B51422
 set  01207047
+rewind
 
-jmp  36
-
-###########################################
-# Old3ds
-
-# Disable main signature checks (20)
-seek 001650C0
-set  00204EB070BD
+##################################### (22)
 
-# Patch RSA function to not report invalid signatures (22)
-seek 00173A0E
-set  0120
+# There's not enough context for the patterns below to patch both o3ds and n3ds, so
+# we have to split them up.
 
-# Disable header Nintendo logo check (not generally needed) (24)
-seek 00174802
-set  00200000
+n3ds
+jmpeq 25
+jmp   32
 
-# Disable whitelist check (26)
-seek 00174964
-set  00200000
+# new: (25)
 
-# Disable cartridge blacklist check (mostly, if not entirely, demo carts) (28)
-seek 00174D52
+# Disable save type check
+find FCF745FE
 set  01200000
+rewind
 
-# Disable save type check (30)
-seek 00174D5E
+# Disable DSi cartridge save exploit check (28)
+find FCF765FD
 set  01200000
+rewind
 
-# Disable DSi cartridge save exploit check (32)
-seek 00174D6A
-set  01200000
+jmp 38
 
-# Stub function commonly used to compare SHA hashes to always succeed (34)
-seek 00174E56
-set  01207047
+# old: (32)
+
+# Disable save type check
+find FCF771FE
+set  01200000
+rewind
 
-# end (36)
+# Disable DSi cartridge save exploit check (35)
+find FCF791FD
+set  01200000
+rewind
 
+# end (38)
diff --git a/source/interp.c b/source/interp.c
index c7d1970..5d37a53 100644
--- a/source/interp.c
+++ b/source/interp.c
@@ -138,7 +138,7 @@ exec_bytecode(uint8_t *bytecode, uint16_t ver, uint32_t len, int debug)
 #endif
     struct mode *current_mode = &modes[set_mode];
 
-    uint32_t offset = 0;
+    uint32_t offset = 0, new_offset = 0;
 
     uint32_t i;
 
@@ -350,10 +350,9 @@ exec_bytecode(uint8_t *bytecode, uint16_t ver, uint32_t len, int debug)
                 break;
             case OP_N3DS:
                 if (debug)
-                    log("ver\n");
+                    log("n3ds\n");
                 code++;
                 eq = is_n3ds;
-                code += 2;
                 break;
             case OP_SEEK: // Jump to offset if greater than or equal
                 if (debug)