psxInterpreter.c

#define debugreg(reg) printf(#reg ": %08x\n", psxRegs.GPR.n.reg)

// interpreter execution
static inline void execI() { 
	u32 *code = Read_ICache(psxRegs.pc, FALSE);
	if(code != NULL && SWAP32(*code) == 0xDEADBEEF) {
		printf("===== DEBUG =====\n");
		printf("pc: %08x\n", psxRegs.pc);
		debugreg(r0);
		debugreg(at);
		debugreg(v0); debugreg(v1);
		debugreg(a0); debugreg(a1); debugreg(a2); debugreg(a3);
		debugreg(t0); debugreg(t1); debugreg(t2); debugreg(t3);
		debugreg(t4); debugreg(t5); debugreg(t6); debugreg(t7);
		debugreg(s0); debugreg(s1); debugreg(s2); debugreg(s3);
		debugreg(s4); debugreg(s5); debugreg(s6); debugreg(s7);
		debugreg(t8); debugreg(t9);
		debugreg(k0); debugreg(k1);
		debugreg(gp);
		debugreg(sp);
		debugreg(s8);
		debugreg(ra);
		debugreg(lo); debugreg(hi);
		printf("\n");
		psxRegs.pc += 4;
		return;
	} else if(code != NULL && SWAP32(*code) == 0xDEADBEEE) {
		printf("DEBUG: ");
		psxRegs.pc += 4;
		char buf[256];
		int i = 0;
		while(psxMemRead8(psxRegs.pc) != 0) {
			if(i < 255)
				buf[i++] = psxMemRead8(psxRegs.pc++);
		}
		buf[i++] = 0;
		psxRegs.pc++;
		printf(buf, psxRegs.GPR.n.t0, psxRegs.GPR.n.t1, psxRegs.GPR.n.t2, psxRegs.GPR.n.t3);
		putchar('\n');
		if(psxRegs.pc & 3)
			while(++psxRegs.pc & 3);
		return;
	}
	psxRegs.code = ((code == NULL) ? 0 : SWAP32(*code));

	debugI();

	if (Config.Debug) ProcessDebug();

	psxRegs.pc += 4;
	psxRegs.cycle += BIAS;

	psxBSC[psxRegs.code >> 26]();
}