code: plan9front

ref: e72da62915b09d5673b0c0179ba8dfe045aeb8c3
dir: /sys/lib/acid/386/

// 386 support

defn acidinit()			// Called after all the init modules are loaded
{
	bplist = {};
	bpfmt = 'b';
	wplist = {};
	wpflush();

	srcpath = {
		"./",
		"/sys/src/libc/port/",
		"/sys/src/libc/9sys/",
		"/sys/src/libc/386/"
	};

	srcfiles = {};			// list of loaded files
	srctext = {};			// the text of the files
}

defn linkreg(addr)
{
	return 0;
}

defn stk()				// trace
{
	_stk(*PC, *SP, 0, 0);
}

defn lstk()				// trace with locals
{
	_stk(*PC, *SP, 0, 1);
}

defn gpr()		// print general(hah hah!) purpose registers
{
	print("AX\t", *AX, " BX\t", *BX, " CX\t", *CX, " DX\t", *DX, "\n");
	print("DI\t", *DI, " SI\t", *SI, " BP\t", *BP, "\n");
}

defn spr()				// print special processor registers
{
	local pc;
	local cause;

	pc = *PC;
	print("PC\t", pc, " ", fmt(pc, 'a'), "  ");
	pfl(pc);
	print("SP\t", *SP, " ECODE ", *ECODE, " EFLAG ", *EFLAGS, "\n");
	print("CS\t", *CS, " DS\t ", *DS, " SS\t", *SS, "\n");
	print("GS\t", *GS, " FS\t ", *FS, " ES\t", *ES, "\n");
	
	cause = *TRAP;
	print("TRAP\t", cause, " ", reason(cause), "\n");
}

defn regs()				// print all registers
{
	spr();
	gpr();
}

defn fpr()
{
	print("F0\t",  *F0, "\n");
	print("F1\t",  *F1, "\n");
	print("F2\t",  *F2, "\n");
	print("F3\t",  *F3, "\n");
	print("F4\t",  *F4, "\n");
	print("F5\t",  *F5, "\n");
	print("F6\t",  *F6, "\n");
	print("F7\t",  *F7, "\n");
	print("control\t", *FCW, "\n");
	print("status\t", *FSW, "\n");
	print("tag\t", *FTW, "\n");
	print("ip\t", *FIP, "\n");
	print("cs selector\t", *FCS, "\n");
	print("opcode\t", *FOP, "\n");
	print("data operand\t", *FDP, "\n");
	print("operand selector\t", *FDS, "\n");
}

defn pstop(pid)
{
	local l;
	local pc;

	pc = (*PC)\i;
	
	if notes && regexp("^sys: watchpoint ", notes[0]) then
		pc--;

	print(pid,": ", reason(*TRAP), "\t");
	print(fmt(pc, 'a'), "\t", pc, "\n");

	if notes then {
		if regexp("^sys: watchpoint ", notes[0]) then
			wpprocess();
		else if notes[0] != "sys: breakpoint" then {
			print("Notes pending:\n");
			l = notes;
			while l do {
				print("\t", head l, "\n");
				l = tail l;
			}
		}
	}
}

aggr Ureg
{
	'X' 0 di;
	'X' 4 si;
	'X' 8 bp;
	'X' 12 nsp;
	'X' 16 bx;
	'X' 20 dx;
	'X' 24 cx;
	'X' 28 ax;
	'X' 32 gs;
	'X' 36 fs;
	'X' 40 es;
	'X' 44 ds;
	'X' 48 trap;
	'X' 52 ecode;
	'X' 56 pc;
	'X' 60 cs;
	'X' 64 flags;
	{
	'X' 68 usp;
	'X' 68 sp;
	};
	'X' 72 ss;
};

defn
Ureg(addr) {
	complex Ureg addr;
	print("	di	", addr.di, "\n");
	print("	si	", addr.si, "\n");
	print("	bp	", addr.bp, "\n");
	print("	nsp	", addr.nsp, "\n");
	print("	bx	", addr.bx, "\n");
	print("	dx	", addr.dx, "\n");
	print("	cx	", addr.cx, "\n");
	print("	ax	", addr.ax, "\n");
	print("	gs	", addr.gs, "\n");
	print("	fs	", addr.fs, "\n");
	print("	es	", addr.es, "\n");
	print("	ds	", addr.ds, "\n");
	print("	trap	", addr.trap, "\n");
	print("	ecode	", addr.ecode, "\n");
	print("	pc	", addr.pc, "\n");
	print("	cs	", addr.cs, "\n");
	print("	flags	", addr.flags, "\n");
	print("	sp	", addr.sp, "\n");
	print("	ss	", addr.ss, "\n");
};
sizeofUreg = 76;

print("/sys/lib/acid/386");