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* m68kbsd-nat.c: Include "gdbcore.h", <sys/types.h>,

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<machine/pcb.h> and "bsd-kvm.h".
(PCB_REGS_FP, PCB_REGS_SP): Define if not already defined.
(m68kbsd_supply_pcb): New function.
(_initialize_m68kbsd_nat): New prototype and function.
* Makefile.in (m68kbsd-nat.o): Update dependencies.
* config/m68k/nbsdelf.mh (NATDEPFILES): Add bsd-kvm.o.
(LOADLIBES): New variable.
* config/m68k/obsd.mh (NATDEPFILES): Add bsd-kvm.o.
(LOADLIBES): New variable.
This commit is contained in:
Mark Kettenis
2004-07-03 15:14:48 +00:00
parent fdb1bf9d27
commit cb162ff6d2
5 changed files with 78 additions and 4 deletions
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59
gdb/m68kbsd-nat.c
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@@ -20,6 +20,7 @@
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
@@ -167,3 +168,61 @@ store_inferior_registers (int regnum)
perror_with_name ("Couldn't write floating point status");
}
}
/* Support for debugging kernel virtual memory images. */
#include <sys/types.h>
#include <machine/pcb.h>
#include "bsd-kvm.h"
/* OpenBSD doesn't have these. */
#ifndef PCB_REGS_FP
#define PCB_REGS_FP 10
#endif
#ifndef PCB_REGS_SP
#define PCB_REGS_SP 11
#endif
static int
m68kbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
int regnum, tmp;
int i = 0;
/* The following is true for NetBSD 1.6.2:
The pcb contains %d2...%d7, %a2...%a7 and %ps. This accounts for
all callee-saved registers. From this information we reconstruct
the register state as it would look when we just returned from
cpu_switch(). */
/* The stack pointer shouldn't be zero. */
if (pcb->pcb_regs[PCB_REGS_SP] == 0)
return 0;
for (regnum = M68K_D2_REGNUM; regnum <= M68K_D7_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, &pcb->pcb_regs[i++]);
for (regnum = M68K_A2_REGNUM; regnum <= M68K_SP_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, &pcb->pcb_regs[i++]);
tmp = pcb->pcb_ps & 0xffff;
regcache_raw_supply (regcache, M68K_PS_REGNUM, &tmp);
read_memory (pcb->pcb_regs[PCB_REGS_FP] + 4, (char *) &tmp, sizeof tmp);
regcache_raw_supply (regcache, M68K_PC_REGNUM, &tmp);
return 1;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_m68kbsd_nat (void);
void
_initialize_m68kbsd_nat (void)
{
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (m68kbsd_supply_pcb);
}