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