From 49859317146e00d6c8d2c666129c42ae4b33b6fb Mon Sep 17 00:00:00 2001
From: Alejandro Javier Asenjo Nitti <alejandro.asenjo88@gmail.com>
Date: Mon, 16 Oct 2023 13:52:40 -0300
Subject: [PATCH] decompile memcpy

---
 Makefile                     |  1 +
 include/PR/ultratypes.h      |  2 ++
 src/libultra/libc/string.c   | 16 ++++++++++++++--
 tools/permuter_settings.toml |  5 ++++-
 4 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 8d6ce357..78145cdf 100644
--- a/Makefile
+++ b/Makefile
@@ -192,6 +192,7 @@ build/src/libultra/2BDF0.o: OPTFLAGS := -O1 -g0
 build/src/libultra/2C700.o: OPTFLAGS := -O1 -g0
 build/src/libultra/2D300.o: OPTFLAGS := -O1 -g0
 build/src/libultra/io/controller.o: OPTFLAGS := -O1 -g0
+build/src/libultra/libc/string.o: OPTFLAGS := -O2 -g0
 
 # cc & asm-processor
 build/src/%.o: CC := $(ASM_PROC) $(ASM_PROC_FLAGS) $(CC) -- $(AS) $(ASFLAGS) --
diff --git a/include/PR/ultratypes.h b/include/PR/ultratypes.h
index 85e44f2e..6af7c9ff 100644
--- a/include/PR/ultratypes.h
+++ b/include/PR/ultratypes.h
@@ -57,6 +57,8 @@ typedef volatile long long		vs64;	/* signed 64-bit */
 typedef float				f32;	/* single prec floating point */
 typedef double				f64;	/* double prec floating point */
 
+typedef u32 size_t;
+
 #endif  /* _LANGUAGE_C */
 
 
diff --git a/src/libultra/libc/string.c b/src/libultra/libc/string.c
index 5561b1b9..10d54d31 100644
--- a/src/libultra/libc/string.c
+++ b/src/libultra/libc/string.c
@@ -1,6 +1,18 @@
-#include "common.h"
+#include "global.h"
 
-#pragma GLOBAL_ASM("asm/us/nonmatchings/libultra/libc/string/memcpy.s")
+void* memcpy(void* s1, const void* s2, size_t n) {
+    unsigned char* su1 = (unsigned char*)s1;
+    const unsigned char* su2 = (const unsigned char*)s2;
+
+    while (n > 0) {
+        *su1 = *su2;
+        su1++;
+        su2++;
+        n--;
+    }
+
+    return s1;
+}
 
 #pragma GLOBAL_ASM("asm/us/nonmatchings/libultra/libc/string/strlen.s")
 
diff --git a/tools/permuter_settings.toml b/tools/permuter_settings.toml
index d9acc8df..e86aa08a 100644
--- a/tools/permuter_settings.toml
+++ b/tools/permuter_settings.toml
@@ -1 +1,4 @@
-compiler_type = "ido"
\ No newline at end of file
+compiler_type = "ido"
+
+[decompme.compilers]
+"tools/ido_recomp/linux/5.3/cc" = "ido5.3"
\ No newline at end of file