166 lines
4.6 KiB
C
166 lines
4.6 KiB
C
typedef long Long;
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/* The following enum is used to access the special registers in
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the saved machine state. */
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typedef enum
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{
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kDc_SavedPC = 0, /* really SRR0 */
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kDc_SavedMSR = 1, /* really SRR1 */
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kDc_SavedCR = 2,
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kDc_SavedLR = 3,
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kDc_SavedDSISR = 4,
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kDc_SavedDAR = 5,
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kDc_SavedXER = 6,
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kDc_SavedCTR = 7,
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kDc_SavedSDR1 = 8,
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kDc_SavedRTCU = 9,
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kDc_SavedRTCL = 10,
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kDc_SavedDEC = 11,
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kDc_SavedSR00 = 12, /* The Segement Registers are consecutive */
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kDc_SavedSR01 = 13, /* kDc_SavedSR00 + n is supported */
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kDc_SavedSR02 = 14,
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kDc_SavedSR03 = 15,
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kDc_SavedSR04 = 16,
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kDc_SavedSR05 = 17,
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kDc_SavedSR06 = 18,
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kDc_SavedSR07 = 19,
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kDc_SavedSR08 = 20,
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kDc_SavedSR09 = 21,
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kDc_SavedSR10 = 22,
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kDc_SavedSR11 = 23,
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kDc_SavedSR12 = 24,
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kDc_SavedSR13 = 25,
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kDc_SavedSR14 = 26,
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kDc_SavedSR15 = 27,
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kDc_SavedFPSCR = 29,
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kDc_SavedMQ = 30,
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kDc_SavedBAT0U = 31,
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kDc_SavedBAT0L = 32,
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kDc_SavedBAT1U = 33,
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kDc_SavedBAT1L = 34,
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kDc_SavedBAT2U = 35,
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kDc_SavedBAT2L = 36,
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kDc_SavedBAT3U = 37,
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kDc_SavedBAT3L = 38,
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kNumberSpecialRegisters = 39
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} Dc_SavedRegisterName;
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/* Access to floating points is not very easy. This allows the number to be
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accessed both as a floating number and as a pair of Longs. */
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typedef union
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{
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double asfloat; /* access the variable as a floating number */
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struct
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{
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Long high;
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Long low;
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}
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asLONG; /* access the variable as two Longs */
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} FloatingPoints;
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/* The following is the standard record for Saving a machine state */
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struct SavedMachineState
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{
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FloatingPoints CSavedFPRegs[32]; /* The floating point registers [0->31] */
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/* ***32bit assumption*** */
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Long CsavedRegs[32]; /* space to save the General Registers */
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/* These are saved 0->31 */
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Long CexReason;
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Long SavedDomainID;
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union
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{ /* must be 8-byte aligned, so doubleFPSCR is 8-byte aligned */
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struct
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{
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Long CsavedSRR0; /* Index 0 - The saved PC */
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Long CsavedSRR1; /* 1 saved MSR */
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Long CsavedCR; /* 2 */
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Long CsavedLR; /* 3 */
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Long CsavedDSISR; /* 4 */
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Long CsavedDAR; /* 5 */
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Long CsavedXER; /* 6 */
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Long CsavedCTR; /* 7 */
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Long CsavedSDR1; /* 8 */
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Long CsavedRTCU; /* 9 */
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Long CsavedRTCL; /* 10 */
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Long CsavedDEC; /* 11 */
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Long CsavedSR0; /* 12 */
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Long CsavedSR1; /* 13 */
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Long CsavedSR2; /* 14 */
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Long CsavedSR3; /* 15 */
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Long CsavedSR4; /* 16 */
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Long CsavedSR5; /* 17 */
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Long CsavedSR6; /* 18 */
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Long CsavedSR7; /* 19 */
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Long CsavedSR8; /* 20 */
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Long CsavedSR9; /* 21 */
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Long CsavedSR10; /* 22 */
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Long CsavedSR11; /* 23 */
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Long CsavedSR12; /* 24 */
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Long CsavedSR13; /* 25 */
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Long CsavedSR14; /* 26 */
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Long CsavedSR15; /* 27 */
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/* CdoubleFPSCR must be double word aligned */
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Long CdoubleFPSCR; /* 28 this is the upper part of the store and has
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no meaning */
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Long CsavedFPSCR; /* 29 */
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Long CsavedMQ; /* 30 */
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Long CsavedBAT0U; /* 31 */
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Long CsavedBAT0L; /* 32 */
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Long CsavedBAT1U; /* 33 */
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Long CsavedBAT1L; /* 34 */
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Long CsavedBAT2U; /* 35 */
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Long CsavedBAT2L; /* 36 */
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Long CsavedBAT3U; /* 37 */
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Long CsavedBAT3L; /* 38 */
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}
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SpecialRegistersEnumerated;
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Long SpecialRegistersIndexed[kNumberSpecialRegisters];
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} u;
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Long Padding[3]; /* Needed for quad-word alignment */
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};
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struct StackFrame
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{
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LONG *ExceptionDomainID;
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/*ProcessorStructure*/ int *ExceptionProcessorID;
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BYTE *ExceptionDescription;
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LONG ExceptionFlags;
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LONG ExceptionErrorCode;
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LONG ExceptionNumber;
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struct SavedMachineState ExceptionState;
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};
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/* Register values. All of these values *MUST* agree with tm.h */
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#define GP0_REGNUM 0 /* GPR register 0 */
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#define SP_REGNUM 1 /* Contains address of top of stack */
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#define FP0_REGNUM 32 /* FPR (Floating point) register 0 */
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#define PC_REGNUM 64 /* Contains program counter */
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#define PS_REGNUM 65 /* Processor (or machine) status (%msr) */
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#define CR_REGNUM 66 /* Condition register */
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#define LR_REGNUM 67 /* Link register */
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#define CTR_REGNUM 68 /* Count register */
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#define XER_REGNUM 69 /* Fixed point exception registers */
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#define MQ_REGNUM 70 /* Multiply/quotient register */
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#define NUM_REGS 71 /* Number of machine registers */
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#define REGISTER_BYTES (420) /* Total size of registers array */
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#define ExceptionPC ExceptionState.u.SpecialRegistersEnumerated.CsavedSRR0
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#define DECR_PC_AFTER_BREAK 0 /* PPCs get this right! */
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#define BREAKPOINT {0x7d, 0x82, 0x10, 0x08}
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extern unsigned char breakpoint_insn[];
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#define BREAKPOINT_SIZE 4
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#if 0
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#define ALTERNATE_MEM_FUNCS /* We need our own get_char/set_char */
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#endif
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extern int get_char (char *addr);
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extern void set_char (char *addr, int val);
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