56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
|
/* cpu.h example cpu-description header-file */
|
||
|
|
/* (c) in 2002 by Volker Barthelmann */
|
||
|
|
|
||
|
|
#define LITTLEENDIAN 1
|
||
|
|
#define BIGENDIAN 0
|
||
|
|
#define VASM_CPU_TEST 1
|
||
|
|
|
||
|
|
/* maximum number of operands in one mnemonic */
|
||
|
|
#define MAX_OPERANDS 2
|
||
|
|
|
||
|
|
/* maximum number of mnemonic-qualifiers per mnemonic */
|
||
|
|
#define MAX_QUALIFIERS 1
|
||
|
|
|
||
|
|
/* maximum number of additional command-line-flags for this cpu */
|
||
|
|
|
||
|
|
/* data type to represent a target-address */
|
||
|
|
typedef int32_t taddr;
|
||
|
|
typedef uint32_t utaddr;
|
||
|
|
|
||
|
|
/* minimum instruction alignment */
|
||
|
|
#define INST_ALIGN 2
|
||
|
|
|
||
|
|
/* default alignment for n-bit data */
|
||
|
|
#define DATA_ALIGN(n) ((n)<=8?1:2)
|
||
|
|
|
||
|
|
/* operand class for n-bit data definitions */
|
||
|
|
#define DATA_OPERAND(n) OP_ABS
|
||
|
|
|
||
|
|
/* type to store each operand */
|
||
|
|
typedef struct {
|
||
|
|
int type;
|
||
|
|
int basereg;
|
||
|
|
expr *offset;
|
||
|
|
} operand;
|
||
|
|
|
||
|
|
/* operand-types (stupid example) */
|
||
|
|
#define OP_IMM32 1
|
||
|
|
#define OP_REG 2
|
||
|
|
#define OP_ABS 3
|
||
|
|
#define OP_REGIND 4
|
||
|
|
/* supersets of other operands */
|
||
|
|
#define OP_MEM 100
|
||
|
|
#define OP_ALL 200
|
||
|
|
#define OP_ALL_DEST 300
|
||
|
|
|
||
|
|
#define OP_ISMEM(x) ((x)==OP_ABS||(x)==OP_REGIND)
|
||
|
|
|
||
|
|
#define CPU_SMALL 1
|
||
|
|
#define CPU_LARGE 2
|
||
|
|
#define CPU_ALL (-1)
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
unsigned int available;
|
||
|
|
unsigned int opcode;
|
||
|
|
} mnemonic_extension;
|