29 lines
826 B
C
29 lines
826 B
C
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#include <cpu.h>
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extern cpu_context ctx;
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u16 reverse(u16 n) {
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return ((n & 0XFF00) >> 8) | ((n & 0x00FF) << 8);
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}
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u16 cpu_read_reg(reg_type rt) {
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switch(rt) {
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case RT_A: return ctx.regs.a;
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case RT_F: return ctx.regs.f;
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case RT_B: return ctx.regs.b;
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case RT_C: return ctx.regs.c;
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case RT_D: return ctx.regs.d;
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case RT_E: return ctx.regs.e;
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case RT_H: return ctx.regs.h;
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case RT_L: return ctx.regs.l;
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case RT_AF: return reverse(*((u16 *)&ctx.regs.a));
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case RT_BC: return reverse(*((u16 *)&ctx.regs.b));
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case RT_DE: return reverse(*((u16 *)&ctx.regs.d));
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case RT_HL: return reverse(*((u16 *)&ctx.regs.h));
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case RT_PC: return ctx.regs.pc;
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case RT_SP: return ctx.regs.sp;
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default: return 0;
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}
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}
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