NetBoot/vasm-1/cpus/tr3200/cpu.h
2020-06-20 09:33:04 +08:00

49 lines
1.3 KiB
C

/* cpu.h TR3200 cpu-description header-file */
/* (c) in 2014 by Luis Panadero Guardeno */
#define LITTLEENDIAN 1
#define BIGENDIAN 0
#define VASM_CPU_TR3200 1
/* maximum number of operands in one mnemonic */
#define MAX_OPERANDS 3
/* maximum number of mnemonic-qualifiers per mnemonic */
#define MAX_QUALIFIERS 0
/* 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 4
/* default alignment for n-bit data */
#define DATA_ALIGN(n) ((n)<=8 ? 1 : ((n)<=16 ? 2 : 4))
/* type to store each operand */
typedef struct {
int16_t type; /* type of operand from mnemonic.operand_type */
uint8_t reg; /* Register number if there is one */
expr *value; /* single register, immed. val. or branch loc.*/
} operand;
/* operand types */
#define NO_OP (0)
#define OP_GPR (1) /* %r0 to %r15 or %y, %bp %sp, %ia %flags */
#define OP_IMM (2)
/* operand class for n-bit data definitions */
#define DATA_OPERAND(n) OP_IMM
#define CPU_ALL (-1)
typedef struct {
unsigned char opcode; /* OpCode */
unsigned char rn_pos; /* Position of Rn */
unsigned char available; /* CPU variants were is available */
} mnemonic_extension;