X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fdebug.c;h=46161777fc5b6ff3c1a60bfc26012f40c0c9a4f6;hb=HEAD;hp=d6220c016fcfd4c4407c7d5f437af915cfcb5a1a;hpb=c01146f8ecd395bfcdeb8af3b50f8a9ab2b87488;p=mdlife

diff --git a/src/debug.c b/src/debug.c
index d6220c0..4616177 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -73,3 +73,45 @@ void dbg_putchar(int c)
 		dbg_printchar(cur_x++, cur_y, c);
 	}
 }
+
+static const char *exc_str[] = {
+	"unknown", "",
+	"bus error",
+	"address error",
+	"illegal instruction",
+	"divide by zero",
+	"chk",
+	"trap",
+	"priviledge violation",
+	"trace",
+	"op 1010",
+	"op 1111",
+	"", "",
+	"format error",
+	"uninitialized vector",
+	"", "", "", "", "", "", "", "",
+	"spurious interrupt"
+};
+
+struct frame {
+	uint16_t padding;
+	uint16_t status;
+	uint32_t pc;
+	/* group 2 */
+	uint16_t fmtoffs;
+	uint16_t other[1];
+} __attribute__((packed));
+
+void exc_dump(unsigned int num, struct frame *frm)
+{
+	dbg_setcursor(1, 1);
+
+	if(num < sizeof exc_str / sizeof *exc_str) {
+		printf("Exception %xh: %s\n", num, exc_str[num]);
+	} else {
+		printf("Exception %xh\n", num);
+	}
+
+	printf("status: %x\n", frm->status);
+	printf("pc: %x\n", frm->pc);
+}