o5r/plan9port
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

better unwinding for 386.

Browse source 
command-line extraction from core files on linux and freebsd.

move linux ureg into ureg386.h (used in many places).
This commit is contained in:
rsc 2004-12-25 22:03:28 +00:00
parent cdf1805191
commit 1cc215aaf9
13 changed files with 495 additions and 109 deletions
Download patch file Download diff file Expand all files Collapse all files

91
src/libmach/elfcorelinux386.c
View file

@ -6,30 +6,10 @@
typedef struct Lreg Lreg;
typedef struct Status Status;
struct Lreg
{
u32int ebx;
u32int ecx;
u32int edx;
u32int esi;
u32int edi;
u32int ebp;
u32int eax;
u32int ds;
u32int es;
u32int fs;
u32int gs;
u32int origeax;
u32int eip;
u32int cs;
u32int eflags;
u32int esp;
u32int ss;
};
typedef struct Psinfo Psinfo;
/*
* Lreg is 64-bit aligned within status, so we shouldn't
* UregLinux386 is 64-bit aligned within status, so we shouldn't
* have any packing problems.
*/
struct Status
@ -48,15 +28,32 @@ struct Status
u32int stime[2];
u32int cutime[2];
u32int cstime[2];
Lreg reg;
UregLinux386 reg;
u32int fpvalid;
};
struct Psinfo
{
char state;
char sname;
char zomb;
char nice;
u32int flag;
u16int uid;
u16int gid;
u32int pid;
u32int ppid;
u32int pgrp;
u32int sid;
char fname[16];
char psargs[80];
};
int
coreregslinux386(Elf *elf, ElfNote *note, uchar **up)
{
Status *s;
Lreg *l;
UregLinux386 *l;
Ureg *u;
if(note->descsz < sizeof(Status)){
@ -65,31 +62,31 @@ coreregslinux386(Elf *elf, ElfNote *note, uchar **up)
}
s = (Status*)note->desc;
l = &s->reg;
u = malloc(sizeof(Ureg));
if(u == nil)
if((u = _linux2ureg386(l)) == nil)
return -1;
/* no byte order problems - just copying and rearranging */
u->di = l->edi;
u->si = l->esi;
u->bp = l->ebp;
u->nsp = l->esp;
u->bx = l->ebx;
u->dx = l->edx;
u->cx = l->ecx;
u->ax = l->eax;
u->gs = l->gs;
u->fs = l->fs;
u->es = l->es;
u->ds = l->ds;
u->trap = ~0; // l->trapno;
u->ecode = ~0; // l->err;
u->pc = l->eip;
u->cs = l->cs;
u->flags = l->eflags;
u->sp = l->esp;
u->ss = l->ss;
*up = (uchar*)u;
return sizeof(Ureg);
}
int
corecmdlinux386(Elf *elf, ElfNote *note, char **pp)
{
char *t;
Psinfo *p;
*pp = nil;
if(note->descsz < sizeof(Psinfo)){
werrstr("elf psinfo note too small");
return -1;
}
p = (Psinfo*)note->desc;
print("elf name %s\nelf args %s\n", p->fname, p->psargs);
t = malloc(80+1);
if(t == nil)
return -1;
memmove(t, p->psargs, 80);
t[80] = 0;
*pp = t;
return 0;
}