1 #include <u.h>
2 #include <libc.h>
3 #include <mach.h>
4 
5 int
6 rput(Regs *regs, char *name, ulong u)
7 {
8 	if(regs == nil){
9 		werrstr("registers not mapped");
10 		return -1;
11 	}
12 	return regs->rw(regs, name, &u, 0);
13 }
14 
15 int
16 rget(Regs *regs, char *name, ulong *u)
17 {
18 	if(regs == nil){
19 		*u = ~(ulong)0;
20 		werrstr("registers not mapped");
21 		return -1;
22 	}
23 	return regs->rw(regs, name, u, 1);
24 }
25 
26 int
27 _uregrw(Regs *regs, char *name, ulong *u, int isr)
28 {
29 	Regdesc *r;
30 	uchar *ureg;
31 
32 	if(!isr){
33 		werrstr("cannot write registers");
34 		return -1;
35 	}
36 
37 	if((r = regdesc(name)) == nil)
38 		return -1;
39 	ureg = ((UregRegs*)regs)->ureg + r->offset;
40 
41 	switch(r->format){
42 	default:
43 	case 'X':
44 		*u = mach->swap4(*(u32int*)ureg);
45 		return 0;
46 	}
47 }
48 
49 Regdesc*
50 regdesc(char *name)
51 {
52 	Regdesc *r;
53 
54 	for(r=mach->reglist; r->name; r++)
55 		if(strcmp(r->name, name) == 0)
56 			return r;
57 	return nil;
58 }
59