49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* cpu.h TR3200 cpu-description header-file */
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/* (c) in 2014 by Luis Panadero Guardeno */
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#define LITTLEENDIAN 1
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#define BIGENDIAN 0
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#define VASM_CPU_TR3200 1
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/* maximum number of operands in one mnemonic */
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#define MAX_OPERANDS 3
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/* maximum number of mnemonic-qualifiers per mnemonic */
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#define MAX_QUALIFIERS 0
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/* maximum number of additional command-line-flags for this cpu */
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/* data type to represent a target-address */
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typedef int32_t taddr;
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typedef uint32_t utaddr;
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/* minimum instruction alignment */
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#define INST_ALIGN 4
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/* default alignment for n-bit data */
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#define DATA_ALIGN(n) ((n)<=8 ? 1 : ((n)<=16 ? 2 : 4))
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/* type to store each operand */
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typedef struct {
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int16_t type; /* type of operand from mnemonic.operand_type */
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uint8_t reg; /* Register number if there is one */
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expr *value; /* single register, immed. val. or branch loc.*/
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} operand;
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/* operand types */
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#define NO_OP (0)
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#define OP_GPR (1) /* %r0 to %r15 or %y, %bp %sp, %ia %flags */
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#define OP_IMM (2)
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/* operand class for n-bit data definitions */
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#define DATA_OPERAND(n) OP_IMM
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#define CPU_ALL (-1)
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typedef struct {
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unsigned char opcode; /* OpCode */
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unsigned char rn_pos; /* Position of Rn */
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unsigned char available; /* CPU variants were is available */
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} mnemonic_extension;
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