xref: /plan9/sys/lib/acid/386 (revision 4af5a9a1337b2226c3ce480af26cabb9dde39fa9) 
1// 386 support
2
3defn acidinit()			// Called after all the init modules are loaded
4{
5	bplist = {};
6	bpfmt = 'b';
7
8	srcpath = {
9		"./",
10		"/sys/src/libc/port/",
11		"/sys/src/libc/9sys/",
12		"/sys/src/libc/386/"
13	};
14
15	srcfiles = {};			// list of loaded files
16	srctext = {};			// the text of the files
17}
18
19defn linkreg(addr)
20{
21	return 0;
22}
23
24defn stk()				// trace
25{
26	_stk(*PC, *SP, 0, 0);
27}
28
29defn lstk()				// trace with locals
30{
31	_stk(*PC, *SP, 0, 1);
32}
33
34defn gpr()		// print general(hah hah!) purpose registers
35{
36	print("AX\t", *AX, " BX\t", *BX, " CX\t", *CX, " DX\t", *DX, "\n");
37	print("DI\t", *DI, " SI\t", *SI, " BP\t", *BP, "\n");
38}
39
40defn spr()				// print special processor registers
41{
42	local pc;
43	local cause;
44
45	pc = *PC;
46	print("PC\t", pc, " ", fmt(pc, 'a'), "  ");
47	pfl(pc);
48	print("SP\t", *SP, " ECODE ", *ECODE, " EFLAG ", *EFLAGS, "\n");
49	print("CS\t", *CS, " DS\t ", *DS, " SS\t", *SS, "\n");
50	print("GS\t", *GS, " FS\t ", *FS, " ES\t", *ES, "\n");
51
52	cause = *TRAP;
53	print("TRAP\t", cause, " ", reason(cause), "\n");
54}
55
56defn regs()				// print all registers
57{
58	spr();
59	gpr();
60}
61
62defn fpr()
63{
64	print("F0\t",  *F0, "\n");
65	print("F1\t",  *F1, "\n");
66	print("F2\t",  *F2, "\n");
67	print("F3\t",  *F3, "\n");
68	print("F4\t",  *F4, "\n");
69	print("F5\t",  *F5, "\n");
70	print("F6\t",  *F6, "\n");
71	print("F7\t",  *F7, "\n");
72	print("control\t", *fmt(E0, 'x'), "\n");
73	print("status\t", *fmt(E1, 'x'), "\n");
74	print("tag\t", *fmt(E2, 'x'), "\n");
75	print("ip offset\t", *fmt(E3, 'X'), "\n");
76	print("cs selector\t", *fmt(E4, 'x'), "\n");
77	print("opcode\t", *fmt(E4>>8, 'x'), "\n");
78	print("data operand offset\t", *fmt(E5, 'x'), "\n");
79	print("operand selector\t", *fmt(E6, 'x'), "\n");
80}
81
82defn mmregs()
83{
84	print("MM0\t", *MM0, " MM1\t", *MM1, "\n");
85	print("MM2\t", *MM2, " MM3\t", *MM3, "\n");
86	print("MM4\t", *MM4, " MM5\t", *MM5, "\n");
87	print("MM6\t", *MM6, " MM7\t", *MM7, "\n");
88}
89
90defn pstop(pid)
91{
92	local l;
93	local pc;
94
95	pc = *PC;
96
97	print(pid,": ", reason(*TRAP), "\t");
98	print(fmt(pc, 'a'), "\t", fmt(pc, 'i'), "\n");
99
100	if notes then {
101		if notes[0] != "sys: breakpoint" then {
102			print("Notes pending:\n");
103			l = notes;
104			while l do {
105				print("\t", head l, "\n");
106				l = tail l;
107			}
108		}
109	}
110}
111
112aggr Ureg
113{
114	'X' 0 di;
115	'X' 4 si;
116	'X' 8 bp;
117	'X' 12 nsp;
118	'X' 16 bx;
119	'X' 20 dx;
120	'X' 24 cx;
121	'X' 28 ax;
122	'X' 32 gs;
123	'X' 36 fs;
124	'X' 40 es;
125	'X' 44 ds;
126	'X' 48 trap;
127	'X' 52 ecode;
128	'X' 56 pc;
129	'X' 60 cs;
130	'X' 64 flags;
131	{
132	'X' 68 usp;
133	'X' 68 sp;
134	};
135	'X' 72 ss;
136};
137
138defn
139Ureg(addr) {
140	complex Ureg addr;
141	print("	di	", addr.di, "\n");
142	print("	si	", addr.si, "\n");
143	print("	bp	", addr.bp, "\n");
144	print("	nsp	", addr.nsp, "\n");
145	print("	bx	", addr.bx, "\n");
146	print("	dx	", addr.dx, "\n");
147	print("	cx	", addr.cx, "\n");
148	print("	ax	", addr.ax, "\n");
149	print("	gs	", addr.gs, "\n");
150	print("	fs	", addr.fs, "\n");
151	print("	es	", addr.es, "\n");
152	print("	ds	", addr.ds, "\n");
153	print("	trap	", addr.trap, "\n");
154	print("	ecode	", addr.ecode, "\n");
155	print("	pc	", addr.pc, "\n");
156	print("	cs	", addr.cs, "\n");
157	print("	flags	", addr.flags, "\n");
158	print("	sp	", addr.sp, "\n");
159	print("	ss	", addr.ss, "\n");
160};
161sizeofUreg = 76;
162
163print("/sys/lib/acid/386");
164