crazy debugging tries and fails

Makefile

@@ -32,8 +32,8 @@ ifdef USE_YAML
 CFLAGS += -DUSE_YAML
 LIBS += -lyaml
 else
-LIBS += -laltra64
 endif
+LIBS += -laltra64
 
 LINK_FLAGS = -O1 -L$(ROOTDIR)/lib -L$(ROOTDIR)/mips64-elf/lib -L$(RUST_FULL_TARGET_DIR) -ldragon -lmad $(LIBS) -lc -lm -ldragonsys -lnosys -Tn64ld.x
 PROG_NAME = $(BINDIR)/OS64P

rust/cbindgen.toml

@@ -16,4 +16,4 @@ autogen_warning = "/* Warning, this file is autogenerated by cbindgen. Don't mod
 include_version = false
 
 [export]
-exclude = ["strtoul"]
+exclude = ["strtoul", "screen_text", "test_c_print", "screen_text_num", "screen_text_ptr"]

rust/src/lib.rs

@@ -1,4 +1,5 @@
 #![no_std]
+#![allow(dead_code,unused_variables)]
 
 use core::slice;
 use core::iter::Iterator;
@@ -111,6 +112,8 @@ impl<T: PartialEq> SliceSubsequence<T> for &[T] {
     }
 }
 
+/*
+// for some reason, passing actual pointers like this freezes the n64
 #[no_mangle]
 pub extern "C" fn parse_cheats_ffi(
     cheat_file: *mut u8, cheat_file_len: usize,
@@ -123,16 +126,53 @@ pub extern "C" fn parse_cheats_ffi(
 
     parse_cheats(cheat_file, boot_cheats, in_game_cheats)
 }
+*/
+
+// in C world, usize is actually u32, no idea why but that's a problem for another day...
+// but if we put u32 here it crashes, can only send usize
+#[no_mangle]
+pub extern "C" fn parse_cheats_ffi(
+    cheat_file: usize, cheat_file_len: usize,
+    boot_cheats: usize, boot_cheats_len: usize,
+    in_game_cheats: usize, in_game_cheats_len: usize,
+) -> u8 {
+
+/*
+        unsafe {
+        let cheat_file = cheat_file as *mut u8;
+        let cheat_file = slice::from_raw_parts_mut(cheat_file, 4);
+        cheat_file[1] = b'a';
+        0
+        }
+*/
+    //unsafe { screen_text_ptr(b"from rust woot" as *const u8 as u32); }
+
+    //let cheat_file = unsafe { slice::from_raw_parts(cheat_file as *const u8, cheat_file_len as usize) };
+    let cheat_file = unsafe { slice::from_raw_parts_mut(cheat_file as *mut u8, cheat_file_len as usize) };
+    let boot_cheats = unsafe { slice::from_raw_parts_mut(boot_cheats as *mut u32, boot_cheats_len as usize) };
+    let in_game_cheats = unsafe { slice::from_raw_parts_mut(in_game_cheats as *mut u32, in_game_cheats_len as usize) };
+    
+    dbg(100);
+    
+    //cheat_file[1] = b'a';
+    
+    //0
+
+    parse_cheats(cheat_file, boot_cheats, in_game_cheats)
+}
 
 const SUCCESS: u8 = 0;
 const INVALID_CODE_LINE: u8 = 1;
 const INVALID_LINE: u8 = 2;
 
 pub fn parse_cheats(cheat_file: &[u8], boot_cheats: &mut [u32], in_game_cheats: &mut [u32]) -> u8 {
+    dbg(101);
     let mut repeater = false;
     let mut boot_cheats_idx = 0;
     let mut in_game_cheats_idx = 0;
+    dbg(102);
     for line in cheat_file.lines(b"\n") {
+        dbg(200);
         let line = line.trim(WHITESPACE);
         if line.is_empty() || line.starts_with(b"#") || line == b"---" {
             continue; // empty or comment or whatever the starting thing is
@@ -233,6 +273,7 @@ pub fn parse_cheats(cheat_file: &[u8], boot_cheats: &mut [u32], in_game_cheats:
             return INVALID_LINE;
         }
     }
+    dbg(103);
     SUCCESS
 }
 
@@ -248,8 +289,53 @@ fn hex_to_u32(str: &[u8]) -> u32 {
     unsafe { strtoul(str.as_ptr(), null_mut(), 16) }
 }
 
+#[no_mangle]
+pub extern "C" fn test_rust_print() {
+    //unsafe { test_c_print(); }
+    //unsafe { screen_text_num(9); } 
+    // sent 18446744073709551515 = 4294967195 = FFFF_FF9B
+    // sent 0xffff_ffff_ffff_ffff = 4294967295 = FFFF_FFFF
+    unsafe { screen_text_num(0xffff_ffff_ffff_ffff); }
+    //unsafe { screen_text(b"rust test\0".as_ptr()); }
+}
+
+#[no_mangle]
+pub extern "C" fn rust_call_test(num: usize) {
+    unsafe { screen_text_num(num); }
+}
+
+#[no_mangle]
+pub extern "C" fn rust_call_test_ptr(num: usize) -> u8 {
+    unsafe {
+        let cheat_file = num as *mut u8;
+        let cheat_file = slice::from_raw_parts_mut(cheat_file, 4);
+        cheat_file[1] = b'a';
+        //screen_text_num(cheat_file[0].into());
+        0
+    }
+}
+
+fn dbg(num: usize) {
+    #[cfg(not(test))]
+    unsafe { screen_text_num(num); }
+    #[cfg(test)]
+    println!("dbg: {}", num);
+}
+
+/*
+#[no_mangle]
+pub extern "C" fn rust_call_test_bla() {
+    //rust_call_test(b"c rust test\0".as_ptr());
+    rust_call_test([99, 32, 114, 117, 115, 116, 32, 116, 101, 115, 116, 0].as_ptr());
+}
+*/
+
 extern "C" {
     fn strtoul(s: *const u8, endp: *mut *mut u8, base: i32) -> u32; // todo: is base i32 ?
+    fn screen_text(msg: *const u8);
+    fn screen_text_num(num: usize);
+    fn screen_text_ptr(ptr: u32);
+    fn test_c_print();
 }
 
 #[cfg(test)]
@@ -258,6 +344,7 @@ mod tests {
 
     #[test]
     fn test_hex_to_u32() {
+        println!("i: {:?}", b"c rust test\0");
         assert_eq!(hex_to_u32(b"0x09"), 9);
     }
 
@@ -353,5 +440,14 @@ In Health (ASM):
         assert_eq!(ok, SUCCESS);
         assert_eq!(boot_cheats, [0xF10004E4, 0x2400, 0xEE000000, 0x0000, 0, 0]);
         assert_eq!(in_game_cheats, [0x8138EDA0, 0x2400, 0, 0, 0, 0]);
+        
+        let cheats_file = &b"wootwootwootwootwootwootwootwoot\0"[..];
+        let cheats_file = &b"wootwootwootwootwootwootwootwoot"[..];
+        let mut boot_cheats = [0u32; 6];
+        let mut in_game_cheats = [0u32; 6];
+        let ok = parse_cheats(cheats_file, &mut boot_cheats, &mut in_game_cheats);
+        assert_eq!(ok, INVALID_LINE);
+        assert_eq!(boot_cheats, [0, 0, 0, 0, 0, 0]);
+        assert_eq!(in_game_cheats, [0, 0, 0, 0, 0, 0]);
     }
 }

src/main.c

@@ -41,9 +41,9 @@
 // YAML parser
 #include <yaml.h>
 #else
-#include <altra64.h>
 #endif /* USE_YAML */
 
+#include <altra64.h>
 
 #include "constants.h"
 #include "debug.h"
@@ -258,6 +258,50 @@ int page = 0;
 int cursor = 0;
 direntry_t *list;
 
+display_context_t global_disp_ctx;
+
+void screen_text(u8 *msg) {
+    printText(msg, 3, -1, global_disp_ctx);
+    display_show(global_disp_ctx);
+    sleep(1000);
+}
+
+void screen_text_num(size_t num) {
+    char num_str[64];
+
+    sprintf(num_str, "dbg: %u", num);
+    screen_text(num_str);
+}
+
+void screen_text_ptr(size_t ptr) {
+    u8 *msg = (u8*)ptr;
+    screen_text(msg);
+}
+
+void call_test(size_t num) {
+    screen_text_num(num);
+}
+/*
+00006644 <call_test>:
+    6644:       27bdffd8        addiu   sp,sp,-40
+    6648:       ffbf0020        sd      ra,32(sp)
+    664c:       0c000000        jal     0 <ttULONG>
+    6650:       00000000        nop
+    6654:       dfbf0020        ld      ra,32(sp)
+    6658:       03e00008        jr      ra
+    665c:       27bd0028        addiu   sp,sp,40
+*/
+
+void call_test_bla() {
+    call_test(5);
+}
+
+void test_c_print() {
+    screen_text("c rust test");
+    screen_text_num(5);
+    screen_text("c rust test2");
+}
+
 int filesize(FILE *pFile)
 {
     fseek(pFile, 0, SEEK_END);
@@ -2192,6 +2236,11 @@ int readCheatFile(TCHAR *filename, u32 *cheat_lists[2])
     UINT bytesread;
     result = f_open(&file, filename, FA_READ);
     
+    screen_text("in readCheatFile");
+    screen_text_num(0xffffffffffffffff);
+    test_rust_print();
+    screen_text("called rust");
+
     if (result == FR_OK)
     {
         int fsize = f_size(&file);
@@ -2238,7 +2287,7 @@ int readCheatFile(TCHAR *filename, u32 *cheat_lists[2])
 #else
             // use rust
             size_t list1_size = both_list_sizes - list2_size;
-            repeater = parse_cheats_ffi(cheatfile, fsize, list1, list1_size, list2, list2_size);
+            repeater = parse_cheats_ffi((size_t)cheatfile, fsize, (size_t)list1, list1_size, (size_t)list2, list2_size);
 #endif /* USE_YAML */
             
             free(cheatfile);
@@ -2272,10 +2321,12 @@ void bootRom(display_context_t disp, int silent)
             char cheat_filename[64];
             sprintf(cheat_filename, "/"ED64_FIRMWARE_PATH"/CHEATS/%s.yml", rom_filename);
 
+            global_disp_ctx = disp;
             int ok = readCheatFile(cheat_filename, cheat_lists);
             if (ok == 0)
             {
                 printText("cheats found...", 3, -1, disp);
+                sleep(10000);
             }
             else
             {
@@ -4590,6 +4641,59 @@ int main(void)
         drawBg(disp);           //new
         drawBoxNumber(disp, 1); //new
         
+        
+        
+        /*
+        */
+        global_disp_ctx = disp;
+        screen_text("in MAIN");
+        screen_text_num(SIZE_MAX);
+        screen_text("in MAIN2");
+        screen_text_num((size_t)-1);
+        screen_text("in MAIN3");
+        screen_text_num(0xffffffffffffffff);
+        test_rust_print();
+        screen_text_ptr((size_t)"called rust");
+        rust_call_test(SIZE_MAX);
+        screen_text_ptr((size_t)"called rust2");
+        char* woot = "wootwootwootwootwootwootwootwoot";
+        size_t fsize = 32;
+        
+        //u8 repeater = rust_call_test_ptr((size_t) woot);
+        
+        /*
+                                       */
+        u32 *list1;
+        u32 *list2;
+        size_t both_list_sizes = fsize + 2 * sizeof(u32);
+        list1 = calloc(1, both_list_sizes); // Plus 2 words to be safe
+        if (!list1)
+        {
+            screen_text("oom");
+            while(true) { sleep(1000); }
+        }
+        size_t list2_size = fsize / sizeof(u32) / 2;
+        list2 = &list1[list2_size];
+        //cheat_lists[0] = list1;
+        //cheat_lists[1] = list2;
+        
+        size_t list1_size = both_list_sizes - list2_size;
+        
+        screen_text_num(list1_size);
+        screen_text_num(list2_size);
+        screen_text_ptr((size_t)"called rust2.5");
+        
+        u8 repeater = parse_cheats_ffi((size_t)woot, fsize
+                                       , (size_t)list1, list1_size
+                                       , (size_t)list2, list2_size
+                                       );
+        
+        
+        screen_text("called rust3");
+        screen_text(woot);
+        screen_text("called rust4");
+        while(true) { sleep(1000); }
+
         uint32_t *buffer = (uint32_t *)__get_buffer(disp); //fg disp = 2
 
         display_show(disp); //new