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https://gitlab.os-k.eu/os-k-team/kvisc.git
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117 lines
1.6 KiB
C
117 lines
1.6 KiB
C
// The OS/K Team licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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enum
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{
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CD_NONE,
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CD_C, CD_O, CD_Z, CD_S, CD_P,
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CD_A, CD_AE, CD_B, CD_BE,
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CD_G, CD_GE, CD_L, CD_LE,
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CD_CXZ, COND_RES,
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};
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enum
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{
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PREF_LOCK = (1 << 15),
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PREF_NOMORE = (1 << 14),
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PREF_REP = (1 << 15),
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BITS_COND = (1 << 14) | (1 << 13) | (1 << 12)
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| (1 << 11) | (1 << 10),
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COND_SHIFT = 8,
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Fx_MASK = 0x1F,
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F1_SHIFT = 5,
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};
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enum
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{
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A_NONE = 0b00000,
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A_REG = 0b00001,
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A_IMM64 = 0b00010,
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AM_START = 0b00100,
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AM_IMM64 = 0b00,
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AM_RR = 0b01,
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AM_RRI = 0b10,
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AM_RRII = 0b11,
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AM_8ACC = 0b00100,
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AM_16ACC = 0b01000,
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AM_32ACC = 0b01100,
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AM_64ACC = 0b10000,
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AM_MLEN_MASK = 0b11100,
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AM_MFMT_MASK = 0b00011,
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};
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#define ACC_FMT_IS_MEM(x) ((x) >= AM_START && (x) <= (AM_64ACC|AM_RRII))
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#define ACC_IS_MEM(x) (ACC_FMT_IS_MEM((x)->type))
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struct acc_t
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{
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uint type;
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ulong val;
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// A_REG
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ulong reg;
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// AM_...
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ulong addr;
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uint mlen;
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};
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enum { NOPRM, P_REG, P_IMM, P_MEM=4 };
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struct instr_t
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{
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char *name;
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char *full;
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uint prm1;
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uint prm2;
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bool (*func)(ctx_t *, acc_t *, acc_t *, ulong *);
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};
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void exec_instr(ctx_t *ctx,
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instr_t *in,
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acc_t *p1,
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acc_t *p2,
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bool lock,
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bool rep,
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uint cond,
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ulong pc);
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void extract_param(ctx_t *ctx,
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acc_t *p,
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uchar fmt);
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