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* ppcobsd-nat.c: Include "gdbcore.h", <sys/signal.h>,

Browse source 
<machine/frame.h>, <machine/pcb.h> and "bsd-kvm.h".
(ppcobsd_supply_pcb): New function.
(_initialize_ppcobsd_nat): Enable libkvm interface.
* Makefile.in (ppcobsd-nat.o): Update dependencies.
This commit is contained in:
Mark Kettenis 2005-06-24 21:11:39 +00:00
parent 772562f8ac
commit 0ae4f2cb51
2 changed files with 53 additions and 0 deletions
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8
gdb/ChangeLog
View file

@ -1,3 +1,11 @@
2005-06-24 Mark Kettenis <kettenis@gnu.org>
* ppcobsd-nat.c: Include "gdbcore.h", <sys/signal.h>,
<machine/frame.h>, <machine/pcb.h> and "bsd-kvm.h".
(ppcobsd_supply_pcb): New function.
(_initialize_ppcobsd_nat): Enable libkvm interface.
* Makefile.in (ppcobsd-nat.o): Update dependencies.
2005-06-24 Corinna Vinschen <vinschen@redhat.com>
* i386-tdep.c (struct i386_frame_cache): Define sp_offset as LONGEST.

45
gdb/ppcobsd-nat.c
View file

@ -20,17 +20,22 @@
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
#include <stddef.h>
#include <sys/types.h>
#include <sys/ptrace.h>
#include <sys/signal.h>
#include <machine/frame.h>
#include <machine/pcb.h>
#include <machine/reg.h>
#include "ppc-tdep.h"
#include "ppcobsd-tdep.h"
#include "inf-ptrace.h"
#include "bsd-kvm.h"
/* OpenBSD/powerpc doesn't have PT_GETFPREGS/PT_SETFPREGS like
NetBSD/powerpc and FreeBSD/powerpc. */
@ -72,6 +77,43 @@ ppcobsd_store_registers (int regnum)
}
static int
ppcobsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
struct switchframe sf;
struct callframe cf;
int i, regnum;
/* The following is true for OpenBSD 3.7:
The pcb contains %r1 (the stack pointer) at the point of the
context switch in cpu_switch(). At that point we have a stack
frame as described by `struct switchframe', and below that a call
frame as described by `struct callframe'. From this information
we reconstruct the register state as it would look when we are in
cpu_switch(). */
/* The stack pointer shouldn't be zero. */
if (pcb->pcb_sp == 0)
return 0;
read_memory (pcb->pcb_sp, (gdb_byte *)&sf, sizeof sf);
regcache_raw_supply (regcache, SP_REGNUM, &sf.sp);
regcache_raw_supply (regcache, tdep->ppc_cr_regnum, &sf.cr);
regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 2, &sf.fixreg2);
for (i = 0, regnum = tdep->ppc_gp0_regnum + 13; i < 19; i++, regnum++)
regcache_raw_supply (regcache, regnum, &sf.fixreg[i]);
read_memory (sf.sp, (gdb_byte *)&cf, sizeof cf);
regcache_raw_supply (regcache, PC_REGNUM, &cf.lr);
regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 30, &cf.r30);
regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 31, &cf.r31);
return 1;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_ppcobsd_nat (void);
@ -104,4 +146,7 @@ _initialize_ppcobsd_nat (void)
ppcobsd_reg_offsets.vr0_offset = offsetof (struct vreg, vreg);
ppcobsd_reg_offsets.vscr_offset = offsetof (struct vreg, vscr);
ppcobsd_reg_offsets.vrsave_offset = offsetof (struct vreg, vrsave);
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (ppcobsd_supply_pcb);
}