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vhdl/lib/CPUs/MIPS/bsp/examples/xcpt.h
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jens 8867efa451 Initial version
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git-svn-id: http://moon:8086/svn/vhdl/trunk@272 cc03376c-175c-47c8-b038-4cd826a8556b
2009-01-21 08:52:05 +00:00

35 lines
1.1 KiB
C

#ifndef XCPT_H
#define XCPT_H
typedef enum
{
Int = 0, Mod = 1, TLBL = 2, TLBS = 3, AdEL = 4, AdES = 5,
IBE = 6, DBE = 7, Syscall = 8, Bp = 9, RI = 10, CpU = 11,
Ov = 12, TRAP = 13, VCEI = 14, FPE = 15, C2E = 16, Watch = 23, 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;
#endif // XCPT_H