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76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
#ifndef S12Z_H
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#define S12Z_H
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/* This byte is used to prefix instructions in "page 2" of the opcode
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space. */
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#define PAGE2_PREBYTE (0x1b)
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struct reg
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{
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char *name; /* The canonical name of the register. */
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int bytes; /* its size, in bytes. */
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};
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/* How many registers do we have. Actually there are only 13,
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because CCL and CCH are the low and high bytes of CCW. But
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for assemnbly / disassembly purposes they are considered
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distinct registers. */
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#define S12Z_N_REGISTERS 15
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extern const struct reg registers[S12Z_N_REGISTERS];
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/* Solaris defines REG_Y in sys/regset.h; undef it here to avoid
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breaking compilation when this target is enabled. */
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#undef REG_Y
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enum
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{
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REG_D2 = 0,
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REG_D3,
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REG_D4,
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REG_D5,
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REG_D0,
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REG_D1,
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REG_D6,
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REG_D7,
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REG_X,
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REG_Y,
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REG_S,
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REG_P,
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REG_CCH,
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REG_CCL,
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REG_CCW
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};
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/* Any of the registers d0, d1, ... d7. */
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#define REG_BIT_Dn \
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((0x1U << REG_D2) | \
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(0x1U << REG_D3) | \
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(0x1U << REG_D4) | \
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(0x1U << REG_D5) | \
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(0x1U << REG_D6) | \
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(0x1U << REG_D7) | \
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(0x1U << REG_D0) | \
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(0x1U << REG_D1))
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/* Any of the registers x, y or z. */
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#define REG_BIT_XYS \
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((0x1U << REG_X) | \
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(0x1U << REG_Y) | \
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(0x1U << REG_S))
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/* Any of the registers x, y, z or p. */
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#define REG_BIT_XYSP \
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((0x1U << REG_X) | \
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(0x1U << REG_Y) | \
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(0x1U << REG_S) | \
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(0x1U << REG_P))
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/* The x register or the y register. */
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#define REG_BIT_XY \
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((0x1U << REG_X) | \
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(0x1U << REG_Y))
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#endif
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