59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
/* cpu.h qnice cpu-description header-file */
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/* (c) in 2016 by Volker Barthelmann */
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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 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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#define LITTLEENDIAN 1
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#define BIGENDIAN 0
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#define VASM_CPU_QNICE 1
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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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#define cc reg
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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 reg; /* also cc */
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expr *offset;
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} operand;
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/* operand-types */
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#define OP_REG 1
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#define OP_REGIND 2
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#define OP_POSTINC 3
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#define OP_PREDEC 4
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#define OP_ABS 5
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#define OP_CC 6
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#define OP_REL 7
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#define OP_GEN 8
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#define OP_DGEN 9
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#define OP_PROTECTED 0
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/* no derivates yet */
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#define CPU_ALL (-1)
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typedef struct {
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unsigned int opcode;
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unsigned int encoding;
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} mnemonic_extension;
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