- refactored libsys into common

git-svn-id: http://moon:8086/svn/mips@198 a8ebac50-d88d-4704-bea3-6648445a41b3
2021-11-23 18:09:11 +00:00
parent 2c4a6af07b
commit 015deb2ace
38 changed files with 7638 additions and 0 deletions
@@ -0,0 +1,59 @@
+#ifndef XCPT_H
+#define XCPT_H
+
+#define MAX_NUM_XCPT			32
+#define	XCPT_ERR_NOTHANDLED		0x80000000
+
+typedef enum
+{
+	EXC_INT = 0, EXC_MOD = 1, EXC_TLBL = 2, EXC_TLBS = 3, EXC_ADEL = 4, EXC_ADES = 5,
+	EXC_IBE = 6, EXC_DBE = 7, EXC_SYSCALL = 8, EXC_BP = 9, EXC_RI = 10, EXC_CPU = 11,
+	EXC_OV = 12, EXC_TRAP = 13, EXC_VCEI = 14, EXC_FPE = 15, EXC_C2E = 16, EXC_WATCH = 23, EXC_VCED = 31
+
+} EXCEPTION_CODE;
+
+typedef unsigned int reg_t;
+
+typedef struct xcptcontext
+{
+	/* This is the exception context frame that is passed to the exception
+	handlers. It gets filled in by the low-level exception handler in
+	"machine.S". An assembler version of this structure can be found at the
+	bottom of "machine.H".*/
+	reg_t sr;					/* Status Register */
+	reg_t cr;					/* Cause Register */
+	reg_t epc;					/* PC at time of exception. */
+	reg_t baddr;
+	reg_t regs[32];				/* Copy of all general purpose registers */
+	reg_t mdlo;					/* HI/LO registers (used for memory management) */
+	reg_t mdhi;
+	reg_t count;				/* Timer registers */
+	reg_t compare;
+	struct xcptcontext * prev;	/* To link exceptions. (unused for now) */
+	unsigned xclass;			/* Priority class of this exception. (unused for now). */
+
+} EXCEPTION_CONTEXT;
+
+typedef int (*fp_xcpt_t)(struct xcptcontext * xcp);
+
+#define PRINT_REG(tag_str, reg)			\
+			sputs(tag_str);				\
+			print_word(reg);			\
+			sputs("   ");
+
+
+#define PRINT_REG_CHG(tag_str, reg, reg_last)			\
+			sputs(tag_str);				\
+			print_word(reg);			\
+			sputs(reg != reg_last ? "*" : " ");			\
+			sputs("  ");
+
+
+// Public functions
+void xcpt_register(int xcpt_num, fp_xcpt_t fp);
+int xcpt_get_type(struct xcptcontext * xcp);
+void xcpt_registers_print(struct xcptcontext * xcp);
+void xcpt_registers_print_with_change(struct xcptcontext * xcp, struct xcptcontext * xcp_last);
+void xcpt_exctype_print(struct xcptcontext * xcp);
+
+#endif // XCPT_H