1 #include <u.h>
2 #include <libc.h>
3 #include <mach.h>
4 #include "elf.h"
5 #include "uregamd64.h"
6
7 typedef struct Ureg Ureg;
8
9 // See FreeBSD's sys/procfs.h.
10
11 typedef struct Lreg Lreg;
12 typedef struct Status Status;
13 typedef struct Psinfo Psinfo;
14
15 struct Lreg
16 {
17 u64int r15;
18 u64int r14;
19 u64int r13;
20 u64int r12;
21 u64int r11;
22 u64int r10;
23 u64int r9;
24 u64int r8;
25 u64int rdi;
26 u64int rsi;
27 u64int rbp;
28 u64int rbx;
29 u64int rdx;
30 u64int rcx;
31 u64int rax;
32 u32int trapno;
33 u16int fs;
34 u16int gs;
35 u32int err;
36 u16int es;
37 u16int ds;
38 u64int rip;
39 u64int cs;
40 u64int rflags;
41 u64int rsp;
42 u64int ss;
43 };
44
45 struct Status
46 {
47 u32int version; /* Version number of struct (1) */
48 u64int statussz; /* sizeof(prstatus_t) (1) */
49 u64int gregsetsz; /* sizeof(gregset_t) (1) */
50 u64int fpregsetsz; /* sizeof(fpregset_t) (1) */
51 u32int osreldate; /* Kernel version (1) */
52 u32int cursig; /* Current signal (1) */
53 u32int pid; /* Process ID (1) */
54 Lreg reg; /* General purpose registers (1) */
55 };
56
57 struct Psinfo
58 {
59 u32int version;
60 u64int size;
61 char name[17];
62 char psargs[81];
63 };
64
65 void
elfcorefreebsdamd64(Fhdr * fp,Elf * elf,ElfNote * note)66 elfcorefreebsdamd64(Fhdr *fp, Elf *elf, ElfNote *note)
67 {
68 Status *s;
69 Lreg *l;
70 Ureg *u;
71 int i;
72
73 switch(note->type) {
74 case ElfNotePrStatus:
75 if(note->descsz < sizeof(Status)){
76 fprint(2, "warning: elf status note too small\n");
77 break;
78 }
79 s = (Status*)note->desc;
80 if(s->version != 1){
81 fprint(2, "warning: unknown elf note status version %ud\n", (uint)s->version);
82 break;
83 }
84 l = &s->reg;
85 u = malloc(sizeof(Ureg));
86
87 /* no byte order problems - just copying and rearranging */
88 u->ax = l->rax;
89 u->bx = l->rbx;
90 u->cx = l->rcx;
91 u->dx = l->rdx;
92 u->si = l->rsi;
93 u->di = l->rdi;
94 u->bp = l->rbp;
95 u->r8 = l->r8;
96 u->r9 = l->r9;
97 u->r10 = l->r10;
98 u->r11 = l->r11;
99 u->r12 = l->r12;
100 u->r13 = l->r13;
101 u->r14 = l->r14;
102 u->r15 = l->r15;
103
104 u->ds = l->ds;
105 u->es = l->es;
106 u->fs = l->fs;
107 u->gs = l->gs;
108
109 u->type = l->trapno;
110 u->error = l->err;
111 u->ip = l->rip;
112 u->cs = l->cs;
113 u->flags = l->rflags;
114 u->sp = l->rsp;
115 u->ss = l->ss;
116
117 if((fp->thread = realloc(fp->thread, (1+fp->nthread)*sizeof(fp->thread[0]))) == nil){
118 fprint(2, "warning: out of memory saving thread info\n");
119 return;
120 }
121 i = fp->nthread;
122 fp->thread[i].id = s->pid;
123 fp->thread[i].ureg = u;
124 fp->nthread++;
125 break;
126 }
127 }
128
129 int
corecmdfreebsd386(Elf * elf,ElfNote * note,char ** pp)130 corecmdfreebsd386(Elf *elf, ElfNote *note, char **pp)
131 {
132 char *t;
133 Psinfo *p;
134
135 *pp = nil;
136 if(note->descsz < sizeof(Psinfo)){
137 werrstr("elf psinfo note too small");
138 return -1;
139 }
140 p = (Psinfo*)note->desc;
141 /* print("elf name %s\nelf args %s\n", p->name, p->psargs); */
142 t = malloc(80+1);
143 if(t == nil)
144 return -1;
145 memmove(t, p->psargs, 80);
146 t[80] = 0;
147 *pp = t;
148 return 0;
149 }
150