From 7e4dc83364b4fd78b184783faeb0ec3965500f88 Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Mon, 2 Feb 2009 22:47:53 +0100
Subject: [PATCH] cleanup some structs

---
 rsb-lz.c | 69 ++++++++++++++++++++++++++++++--------------------------
 1 file changed, 37 insertions(+), 32 deletions(-)

diff --git a/rsb-lz.c b/rsb-lz.c
index c68ac8d..0e86bca 100644
--- a/rsb-lz.c
+++ b/rsb-lz.c
@@ -434,14 +434,19 @@ void fn_59788(const char *fname)
 	exit(1);
 }
 
-struct s_59b78 {
+struct data_in_s {
 	unsigned char *start; /* 0 */
 	unsigned char *stop; /* 4 */
-	unsigned char y; /* 8 */
+	unsigned char bit; /* 8 */
 	unsigned char x; /* 9 */
 };
 
-unsigned char fn_597c8(struct s_59b78 *r6_data)
+struct data_out_s {
+	unsigned char *pos;
+	unsigned char *end;
+};
+
+unsigned char fn_597c8(struct data_in_s *r6_data)
 {
 	unsigned char *r0;
 	unsigned char *r1;
@@ -462,27 +467,27 @@ unsigned char fn_597c8(struct s_59b78 *r6_data)
 	return r5;
 }
 
-unsigned int fn_59848(struct s_59b78 *r6_data)
+unsigned int fn_59848(struct data_in_s *r6_data)
 {
 	unsigned char r1;
 	unsigned char r2;
 	unsigned int r5;
 
-	r1 = r6_data->y;
+	r1 = r6_data->bit;
 	if (r1 == 0x80) {
 		r6_data->x = fn_597c8(r6_data);
 	}
-	r1 = r6_data->y;
+	r1 = r6_data->bit;
 	r2 = r6_data->x;
 	r1 = r1 & r2;
 	r5 = r1 & 0xff;
 
-	r1 = r6_data->y;
+	r1 = r6_data->bit;
 	r1 = r1 >> 1;
-	r6_data->y = r1;
+	r6_data->bit = r1;
 	if (r1 == 0) {
 		r1 = 0x80;
-		r6_data->y = r1;
+		r6_data->bit = r1;
 	}
 
 	if (r5 == 0)
@@ -491,7 +496,7 @@ unsigned int fn_59848(struct s_59b78 *r6_data)
 	return 1;
 }
 
-unsigned int fn_598b4(struct s_59b78 *r11_data, unsigned int r10_arg2)
+unsigned int fn_598b4(struct data_in_s *r11_data, unsigned int r10_arg2)
 {
 	unsigned int r1;
 	unsigned int r2;
@@ -503,12 +508,12 @@ unsigned int fn_598b4(struct s_59b78 *r11_data, unsigned int r10_arg2)
 
 	r7 = 0;
 	while (r6 != 0) {
-		r1 = r11_data->y;
+		r1 = r11_data->bit;
 		if (r1 == 0x80) {
 			r1 = fn_597c8(r11_data);
 			r11_data->x = r1;
 		}
-		r1 = r11_data->y;
+		r1 = r11_data->bit;
 		r2 = r11_data->x;
 		r1 = r1 & r2;
 		if (r1 != 0)
@@ -516,26 +521,26 @@ unsigned int fn_598b4(struct s_59b78 *r11_data, unsigned int r10_arg2)
 
 		r6 = r6 >> 1;
 
-		r2 = r11_data->y;
+		r2 = r11_data->bit;
 		r2 = r2 >> 1;
-		r11_data->y = r2;
+		r11_data->bit = r2;
 
-		r1 = r11_data->y;
+		r1 = r11_data->bit;
 		if(r1 == 0) {
-			r11_data->y = 0x80;
+			r11_data->bit = 0x80;
 		}
 	}
 
 	return r7;
 }
 
-void fn_5980c(unsigned int arg1, unsigned int mem[])
+void fn_5980c(unsigned int arg1, struct data_out_s *data_out)
 {
 	unsigned char *r1;
 	unsigned char *r2;
 
-	r1 = (unsigned char*)mem[0];
-	r2 = (unsigned char*)mem[1];
+	r1 = data_out->pos;
+	r2 = data_out->end;
 
 	if (r1 > r2) {
 		printf("r1: 0x%08x, r2: 0x%08x\n", (unsigned int)r1, (unsigned int)r2);
@@ -545,10 +550,10 @@ void fn_5980c(unsigned int arg1, unsigned int mem[])
 	*r1 = arg1 & 0xff;
 
 	r1++;
-	mem[0] = (unsigned int)r1;
+	data_out->pos = r1;
 }
 
-void fn_5993c(struct s_59b78 *r10_data, unsigned int r13_mem[])
+void lz_expand(struct data_in_s *r10_data, struct data_out_s *data_out)
 {
 	unsigned int r5;
 	unsigned int r2;
@@ -569,7 +574,7 @@ void fn_5993c(struct s_59b78 *r10_data, unsigned int r13_mem[])
 			r2 = fn_598b4(r10_data, 8) & 0xff;
 			r4 = r2;
 
-			fn_5980c(r4, r13_mem);
+			fn_5980c(r4, data_out);
 			arr_59b64[r5] = r4 & 0xff;
 			r2 = r5 + 1;
 			r2 = r2 << 22;
@@ -589,7 +594,7 @@ void fn_5993c(struct s_59b78 *r10_data, unsigned int r13_mem[])
 			r2 = r2 << 22;
 			r2 = r2 >> 22;
 			r4 = arr_59b64[r2];
-			fn_5980c(r4, r13_mem);
+			fn_5980c(r4, data_out);
 			arr_59b64[r5] = r4;
 			r2 = r5 + 1;
 			r2 = r2 << 22;
@@ -641,8 +646,8 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
 	unsigned char *r7 = NULL; /* Arg1, mem start */
 	unsigned char *r10 = NULL; /* Arg2, mem end */
 	unsigned char *r11 = buf; /* Arg3 */
-	struct s_59b78 struct1;
-	unsigned int arr_59b7c[1024];
+	struct data_in_s data_in;
+	struct data_out_s data_out;
 
 	if (*((unsigned int*)r11) != LZ_MAGIC)
 		fn_59788(__func__);
@@ -662,15 +667,15 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
 	if (r3 > r10)
 		fn_59788(__func__);
 	
-	struct1.start = r11 + 8;
-	struct1.stop = r5 + r11;
-	struct1.x = 0;
-	struct1.y = 0x80;
+	data_in.start = r11 + 8;
+	data_in.stop = r5 + r11;
+	data_in.x = 0;
+	data_in.bit = 0x80;
 
-	arr_59b7c[0] = (unsigned int)r7;
-	arr_59b7c[1] = (unsigned int)(r5 + r7);
+	data_out.pos = r7;
+	data_out.end = r7 + r5;
 
-	fn_5993c(&struct1, arr_59b7c);
+	lz_expand(&data_in, &data_out);
 
 #if 0
 	/* This seems to still be completely broken */
-- 
2.39.2