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* i386obsd-nat.c (i386obsd_supply_pcb): Adjust for changes in 

OpenBSD 4.3.
This commit is contained in:
Mark Kettenis 2008-08-06 19:56:20 +00:00
parent 71782a7597
commit f73a15e424
2 changed files with 12 additions and 3 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2008-08-06 Mark Kettenis <kettenis@gnu.org>
* i386obsd-nat.c (i386obsd_supply_pcb): Adjust for changes in
OpenBSD 4.3.
2008-08-06 Vladimir Prus <vladimir@codesourcery.com>
Tom Tromey <tromey@redhat.com>
Thiago Jung Bauermann <bauerman@br.ibm.com>

10
gdb/i386obsd-nat.c
View File

@ -60,10 +60,11 @@ i386obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
/* Read the stack frame, and check its validity. We do this by
checking if the saved interrupt priority level in the stack frame
looks reasonable.. */
read_memory (pcb->pcb_esp, (char *) &sf, sizeof sf);
if ((unsigned int) sf.sf_ppl < 0x100 && (sf.sf_ppl & 0xf) == 0)
#ifdef PCB_SAVECTX
if ((pcb->pcb_flags & PCB_SAVECTX) == 0)
{
/* Yes, we have a frame that matches cpu_switch(). */
read_memory (pcb->pcb_esp, (char *) &sf, sizeof sf);
pcb->pcb_esp += sizeof (struct switchframe);
regcache_raw_supply (regcache, I386_EDI_REGNUM, &sf.sf_edi);
regcache_raw_supply (regcache, I386_ESI_REGNUM, &sf.sf_esi);
@ -71,9 +72,12 @@ i386obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
regcache_raw_supply (regcache, I386_EIP_REGNUM, &sf.sf_eip);
}
else
#endif
{
/* No, the pcb must have been last updated by savectx(). */
pcb->pcb_esp += 4;
pcb->pcb_esp = pcb->pcb_ebp;
pcb->pcb_ebp = read_memory_integer(pcb->pcb_esp, 4);
sf.sf_eip = read_memory_integer(pcb->pcb_esp + 4, 4);
regcache_raw_supply (regcache, I386_EIP_REGNUM, &sf);
}