1 #include <u.h>
2 #include <libc.h>
3 #include <mach.h>
4 #include "elf.h"
5 #include "ureg386.h"
6 
7 typedef struct Lreg Lreg;
8 typedef struct Status Status;
9 
10 struct Lreg
11 {
12 	u32int	fs;
13 	u32int	es;
14 	u32int	ds;
15 	u32int	edi;
16 	u32int	esi;
17 	u32int	ebp;
18 	u32int	isp;
19 	u32int	ebx;
20 	u32int	edx;
21 	u32int	ecx;
22 	u32int	eax;
23 	u32int	trapno;
24 	u32int	err;
25 	u32int	eip;
26 	u32int	cs;
27 	u32int	eflags;
28 	u32int	esp;
29 	u32int	ss;
30 	u32int	gs;
31 };
32 
33 struct Status
34 {
35     u32int		version;	/* Version number of struct (1) */
36     u32int		statussz;	/* sizeof(prstatus_t) (1) */
37     u32int		gregsetsz;	/* sizeof(gregset_t) (1) */
38     u32int		fpregsetsz;	/* sizeof(fpregset_t) (1) */
39     u32int		osreldate;	/* Kernel version (1) */
40     u32int		cursig;	/* Current signal (1) */
41     u32int		pid;		/* Process ID (1) */
42     Lreg		reg;		/* General purpose registers (1) */
43 };
44 
45 int
46 coreregsfreebsd386(Elf *elf, ElfNote *note, uchar **up)
47 {
48 	Status *s;
49 	Lreg *l;
50 	Ureg *u;
51 
52 	if(note->descsz < sizeof(Status)){
53 		werrstr("elf status note too small");
54 		return -1;
55 	}
56 	s = (Status*)note->desc;
57 	if(s->version != 1){
58 		werrstr("unknown status version %ud", (uint)s->version);
59 		return -1;
60 	}
61 	l = &s->reg;
62 	u = malloc(sizeof(Ureg));
63 	if(u == nil)
64 		return -1;
65 
66 	/* no byte order problems - just copying and rearranging */
67 	u->di = l->edi;
68 	u->si = l->esi;
69 	u->bp = l->ebp;
70 	u->nsp = l->esp;
71 	u->bx = l->ebx;
72 	u->dx = l->edx;
73 	u->cx = l->ecx;
74 	u->ax = l->eax;
75 	u->gs = l->gs;
76 	u->fs = l->fs;
77 	u->es = l->es;
78 	u->ds = l->ds;
79 	u->trap = l->trapno;
80 	u->ecode = l->err;
81 	u->pc = l->eip;
82 	u->cs = l->cs;
83 	u->flags = l->eflags;
84 	u->sp = l->esp;
85 	u->ss = l->ss;
86 	*up = (uchar*)u;
87 	return sizeof(Ureg);
88 }
89