diff --git a/asm/dw2003/pro/STGTRAIN.s b/asm/dw2003/pro/STGTRAIN.s
index 7a9c05c55..c64fe34d2 100644
--- a/asm/dw2003/pro/STGTRAIN.s
+++ b/asm/dw2003/pro/STGTRAIN.s
@@ -1,8 +1,8 @@
 .include "macros.s"
 
-.section "section_STGTRAIN"
-.global STGTRAIN
-STGTRAIN:
+.section "section_STGTRAIN_0"
+.global STGTRAIN_0
+STGTRAIN_0:
 .L0x00000000: .word 0x800851d0 # lb $t0, 0x51d0($zr)
 .L0x00000004: .word 0x80085208 # lb $t0, 0x5208($zr)
 .L0x00000008: .word 0x800852a8 # lb $t0, 0x52a8($zr)
@@ -238,14 +238,10 @@ STGTRAIN:
 .L0x000003a0: .word 0x8008b704 # lb $t0, -0x48fc($zr)
 .L0x000003a4: .word 0x8008b710 # lb $t0, -0x48f0($zr)
 # Start of code
-.L0x000003a8: sw $a1, 0x80($a0)                   # .word 0xac850080
-.L0x000003ac: sw $a2, 0x88($a0)                   # .word 0xac860088
-.L0x000003b0: lhu $v0, 0x2($a1)                   # .word 0x94a20002
-.L0x000003b4: nop                                 # .word 0x00000000
-.L0x000003b8: sh $v0, 0x84($a0)                   # .word 0xa4820084
-.L0x000003bc: lhu $v0, 0x4($a1)                   # .word 0x94a20004
-.L0x000003c0: jr $ra                              # .word 0x03e00008
-.L0x000003c4: sh $v0, 0x86($a0)                   # .word 0xa4820086
+
+.section "section_STGTRAIN_1"
+.global STGTRAIN_1
+STGTRAIN_1:
 .L0x000003c8: beqz $a1, .L0x000003e8              # .word 0x10a00007
 .L0x000003cc: nop                                 # .word 0x00000000
 .L0x000003d0: sw $a1, 0x8c($a0)                   # .word 0xac85008c
diff --git a/asm/dw2003/pro/STGTRAIN/f0.s b/asm/dw2003/pro/STGTRAIN/f0.s
new file mode 100644
index 000000000..462596ae6
--- /dev/null
+++ b/asm/dw2003/pro/STGTRAIN/f0.s
@@ -0,0 +1,24 @@
+.include "macros.s"
+
+# struct Arg0 {
+#  _: [u8; 0x80], // 0x0
+#  a0: *u16,      // 0x80
+#  a1: u16,       // 0x84
+#  a2: u16,       // 0x86
+#  a3: u32,       // 0x88
+# }
+
+# `fn f0(arg0: *Arg0, arg1: *u16, arg2: u32) -> u16`
+.section "section_STGTRAIN_f0"
+.global STGTRAIN_f0
+STGTRAIN_f0:
+	sw $a1, 0x80($a0) # arg0.a0 = arg1
+	sw $a2, 0x88($a0) # arg0.a3 = arg2
+
+	lhu $v0, 0x2($a1)
+	nop
+	sh $v0, 0x84($a0) # arg0.a1 = arg1[0x1]
+
+	lhu $v0, 0x4($a1)
+	jr $ra            # return arg1[0x2]
+	sh $v0, 0x86($a0) # arg0.a2 = arg1[0x2]
diff --git a/elf/dw2003/pro/STGTRAIN.yaml b/elf/dw2003/pro/STGTRAIN.yaml
index da6b405eb..5d38659ff 100644
--- a/elf/dw2003/pro/STGTRAIN.yaml
+++ b/elf/dw2003/pro/STGTRAIN.yaml
@@ -2,5 +2,8 @@
 start_addr: 0x0
 objs:
   - /build/asm/dw2003/pro/STGTRAIN.o
+  - /build/asm/dw2003/pro/STGTRAIN/f0.o
 sections:
-  - section_STGTRAIN
+  - section_STGTRAIN_0
+  - section_STGTRAIN_f0
+  - section_STGTRAIN_1