[cadcdev-svn-commits] [SCM] branch master updated. v2.0.0-373-g20be936

[Lawrence S. <ljs...@us...>]

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- Log -----------------------------------------------------------------
commit 20be9367dabe5886365caa8824af1e094718f796
Author: Lawrence Sebald <ljs...@us...>
Date:   Sun Mar 29 16:06:41 2020 -0400

    Add simple util to parse NAOMI NetDIMM binaries and print out some header information from them.

-----------------------------------------------------------------------

Summary of changes:
 utils/naomibin/Makefile   |  13 +++++
 utils/naomibin/naomibin.c | 120 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 133 insertions(+)
 create mode 100644 utils/naomibin/Makefile
 create mode 100644 utils/naomibin/naomibin.c

diff --git a/utils/naomibin/Makefile b/utils/naomibin/Makefile
new file mode 100644
index 0000000..afd184e
--- /dev/null
+++ b/utils/naomibin/Makefile
@@ -0,0 +1,13 @@
+# KallistiOS ##version##
+#
+# utils/naomibin/Makefile
+# Copyright (C) 2020 Lawrence Sebald
+#
+
+all: naomibin
+
+naomibin: naomibin.c
+	gcc -o naomibin naomibin.c
+
+clean:
+	-rm -f naomibin
diff --git a/utils/naomibin/naomibin.c b/utils/naomibin/naomibin.c
new file mode 100644
index 0000000..a959571
--- /dev/null
+++ b/utils/naomibin/naomibin.c
@@ -0,0 +1,120 @@
+/* KallistiOS ##version##
+
+   naomibin.c
+   Copyright (C) 2020 Lawrence Sebald
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+typedef struct naomi_hdr {
+    char signature[16];
+    char developer[32];
+    char region_title[8][32];
+} naomi_hdr_t;
+
+typedef struct naomi_segment {
+    uint32_t rom;
+    uint32_t ram;
+    uint32_t size;
+} naomi_segment_t;
+
+static void print_header(const naomi_hdr_t *hdr) {
+    int i;
+
+    printf("Platform Signature: %.16s\n", hdr->signature);
+    printf("Developer: %.32s\n", hdr->developer);
+
+    for(i = 0; i < 8; ++i) {
+        printf("Region title %d: %.32s\n", i + 1, hdr->region_title[i]);
+    }
+}
+
+static naomi_segment_t *read_segments(FILE *fp, int *num_segments) {
+    int addr = 0x0360;
+    int ns = 0;
+    naomi_segment_t seg;
+
+    fseek(fp, addr, SEEK_SET);
+
+    while(addr < 0x0420) {
+        fread(&seg, sizeof(naomi_segment_t), 1, fp);
+
+        if(seg.size == 0 || (seg.rom & 0x80000000))
+            break;
+
+        printf("Segment %d\n", ns + 1);
+        printf("ROM Address: %08" PRIx32 "\n", seg.rom);
+        printf("RAM Address: %08" PRIx32 "\n", seg.ram);
+        printf("Length: %" PRIu32 "\n", seg.size);
+        addr += 12;
+        ++ns;
+    }
+
+    *num_segments = ns;
+
+    return NULL;
+}
+
+static int read_entry(FILE *fp, uint32_t *entry, uint32_t *entry2) {
+    fseek(fp, 0x0420, SEEK_SET);
+
+    fread(entry, sizeof(uint32_t), 1, fp);
+    fread(entry2, sizeof(uint32_t), 1, fp);
+
+    printf("Entry point: %08" PRIx32 "\n", *entry);
+    printf("Reset point: %08" PRIx32 "\n", *entry2);
+
+    return 0;
+}
+
+static int read_interrupts(FILE *fp) {
+    uint32_t vec[22];
+    int i;
+
+    fseek(fp, 0x0130, SEEK_SET);
+
+    for(i = 0; i < 22; ++i) {
+        fread(vec + i, sizeof(uint32_t), 1, fp);
+        printf("Vector %d: %08" PRIx32 "\n", i, vec[i]);
+    }
+
+    return 0;
+}
+
+int main(int argc, char *argv[]) {
+    FILE *fp;
+    naomi_hdr_t hdr;
+    int tmp;
+    uint32_t entry, reset;
+
+    if(argc != 2) {
+        fprintf(stderr, "Usage: %s filename\n", argv[0]);
+        exit(EXIT_FAILURE);
+    }
+
+    fp = fopen(argv[1], "rb");
+    if(!fp) {
+        perror("Error opening file");
+        exit(EXIT_FAILURE);
+    }
+
+    if(fread(&hdr, sizeof(naomi_hdr_t), 1, fp) != 1) {
+        perror("Error reading file");
+        fclose(fp);
+        exit(EXIT_FAILURE);
+    }
+
+    print_header(&hdr);
+    read_segments(fp, &tmp);
+    read_entry(fp, &entry, &reset);
+    read_interrupts(fp);
+
+    fclose(fp);
+    return 0;
+}


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A pseudo Operating System for the Dreamcast.