614f1c68ed
"sregs" field.
(PSW): Remove bogus definition.
* simops.c: Change condition code handling to use the psw
register within the sregs array. Handle "ldsr" and "stsr".
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
#include <stdio.h>
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#include <ctype.h>
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#include "ansidecl.h"
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#include "opcode/v850.h"
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/* FIXME: host defines */
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typedef unsigned char uint8;
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typedef unsigned short uint16;
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typedef unsigned int uint32;
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typedef signed char int8;
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typedef signed short int16;
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typedef signed int int32;
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typedef signed long long int64;
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/* FIXME: V850 defines */
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typedef uint32 reg_t;
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struct simops
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{
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long opcode;
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long mask;
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void (*func)();
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int numops;
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int operands[9];
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};
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struct _state
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{
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reg_t regs[32]; /* general-purpose registers */
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reg_t sregs[32]; /* system regsiters, including psw */
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reg_t pc;
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uint8 *imem;
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uint8 *dmem;
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int exception;
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} State;
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extern uint16 OP[4];
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extern struct simops Simops[];
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#define PC (State.pc)
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#define PSW_NP 0x80
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#define PSW_EP 0x40
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#define PSW_ID 0x20
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#define PSW_SAT 0x10
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#define PSW_CY 0x8
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#define PSW_OV 0x4
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#define PSW_S 0x2
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#define PSW_Z 0x1
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#define SEXT3(x) ((((x)&0x7)^(~3))+4)
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/* sign-extend a 4-bit number */
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#define SEXT4(x) ((((x)&0xf)^(~7))+8)
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/* sign-extend an 8-bit number */
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#define SEXT8(x) ((((x)&0xff)^(~0x7f))+0x80)
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/* sign-extend a 16-bit number */
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#define SEXT16(x) ((((x)&0xffff)^(~0x7fff))+0x8000)
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/* sign-extend a 32-bit number */
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#define SEXT32(x) ((((x)&0xffffffffLL)^(~0x7fffffffLL))+0x80000000LL)
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/* sign extend a 40 bit number */
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#define SEXT40(x) ((((x)&0xffffffffffLL)^(~0x7fffffffffLL))+0x8000000000LL)
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/* sign extend a 44 bit number */
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#define SEXT44(x) ((((x)&0xfffffffffffLL)^(~0x7ffffffffffLL))+0x80000000000LL)
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/* sign extend a 60 bit number */
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#define SEXT60(x) ((((x)&0xfffffffffffffffLL)^(~0x7ffffffffffffffLL))+0x800000000000000LL)
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#define MAX32 0x7fffffffLL
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#define MIN32 0xff80000000LL
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#define MASK32 0xffffffffLL
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#define MASK40 0xffffffffffLL
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#define INC_ADDR(x,i) x = ((State.MD && x == MOD_E) ? MOD_S : (x)+(i))
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#define RB(x) (*((uint8 *)((x)+State.imem)))
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#define SB(addr,data) ( RB(addr) = (data & 0xff))
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#ifdef WORDS_BIGENDIAN
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#define RW(x) (*((uint16 *)((x)+State.imem)))
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#define RLW(x) (*((uint32 *)((x)+State.imem)))
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#define SW(addr,data) RW(addr)=data
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#define READ_16(x) (*((int16 *)(x)))
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#define WRITE_16(addr,data) (*(int16 *)(addr)=data)
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#define READ_64(x) (*((int64 *)(x)))
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#define WRITE_64(addr,data) (*(int64 *)(addr)=data)
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#else
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uint32 get_longword PARAMS ((uint8 *));
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uint16 get_word PARAMS ((uint8 *));
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int64 get_longlong PARAMS ((uint8 *));
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void write_word PARAMS ((uint8 *addr, uint16 data));
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void write_longlong PARAMS ((uint8 *addr, int64 data));
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#define SW(addr,data) write_word((long)(addr)+State.imem,data)
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#define RW(x) get_word((long)(x)+State.imem)
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#define RLW(x) get_longword((long)(x)+State.imem)
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#define READ_16(x) get_word(x)
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#define WRITE_16(addr,data) write_word(addr,data)
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#define READ_64(x) get_longlong(x)
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#define WRITE_64(addr,data) write_longlong(addr,data)
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#endif /* not WORDS_BIGENDIAN */
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