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 typedef struct Psinfo Psinfo;
10 
11 struct Lreg
12 {
13 	u32int	fs;
14 	u32int	es;
15 	u32int	ds;
16 	u32int	edi;
17 	u32int	esi;
18 	u32int	ebp;
19 	u32int	isp;
20 	u32int	ebx;
21 	u32int	edx;
22 	u32int	ecx;
23 	u32int	eax;
24 	u32int	trapno;
25 	u32int	err;
26 	u32int	eip;
27 	u32int	cs;
28 	u32int	eflags;
29 	u32int	esp;
30 	u32int	ss;
31 	u32int	gs;
32 };
33 
34 struct Status
35 {
36 	u32int		version;	/* Version number of struct (1) */
37 	u32int		statussz;	/* sizeof(prstatus_t) (1) */
38 	u32int		gregsetsz;	/* sizeof(gregset_t) (1) */
39 	u32int		fpregsetsz;	/* sizeof(fpregset_t) (1) */
40 	u32int		osreldate;	/* Kernel version (1) */
41 	u32int		cursig;	/* Current signal (1) */
42 	u32int		pid;		/* Process ID (1) */
43 	Lreg		reg;		/* General purpose registers (1) */
44 };
45 
46 struct Psinfo
47 {
48 	u32int	version;
49 	u32int	size;
50 	char	name[17];
51 	char	psargs[81];
52 };
53 
54 int
55 coreregsfreebsd386(Elf *elf, ElfNote *note, uchar **up)
56 {
57 	Status *s;
58 	Lreg *l;
59 	Ureg *u;
60 
61 	if(note->descsz < sizeof(Status)){
62 		werrstr("elf status note too small");
63 		return -1;
64 	}
65 	s = (Status*)note->desc;
66 	if(s->version != 1){
67 		werrstr("unknown status version %ud", (uint)s->version);
68 		return -1;
69 	}
70 	l = &s->reg;
71 	u = malloc(sizeof(Ureg));
72 	if(u == nil)
73 		return -1;
74 
75 	/* no byte order problems - just copying and rearranging */
76 	u->di = l->edi;
77 	u->si = l->esi;
78 	u->bp = l->ebp;
79 	u->nsp = l->esp;
80 	u->bx = l->ebx;
81 	u->dx = l->edx;
82 	u->cx = l->ecx;
83 	u->ax = l->eax;
84 	u->gs = l->gs;
85 	u->fs = l->fs;
86 	u->es = l->es;
87 	u->ds = l->ds;
88 	u->trap = l->trapno;
89 	u->ecode = l->err;
90 	u->pc = l->eip;
91 	u->cs = l->cs;
92 	u->flags = l->eflags;
93 	u->sp = l->esp;
94 	u->ss = l->ss;
95 	*up = (uchar*)u;
96 	return sizeof(Ureg);
97 }
98 
99 int
100 corecmdfreebsd386(Elf *elf, ElfNote *note, char **pp)
101 {
102 	char *t;
103 	Psinfo *p;
104 
105 	*pp = nil;
106 	if(note->descsz < sizeof(Psinfo)){
107 		werrstr("elf psinfo note too small");
108 		return -1;
109 	}
110 	p = (Psinfo*)note->desc;
111 	/* print("elf name %s\nelf args %s\n", p->name, p->psargs); */
112 	t = malloc(80+1);
113 	if(t == nil)
114 		return -1;
115 	memmove(t, p->psargs, 80);
116 	t[80] = 0;
117 	*pp = t;
118 	return 0;
119 }