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* bsd-kvm.c, bsd-kvm.h: New files.

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* i386fbsd-nat.c: Include <sys/types.h>, <machine/pcb.h> and
"bsd-kvm.h".
(i386fbsd_supply_pcb): New function.
* Makefile.in (ALLDEPFILES): Add bsd-kvm.c.
(i386fbsd-nat.o): Update dependencies.
(bsd_kvm_h): New variable.
(bsd-kvm.o): New dependency.
* config/i386/fbsd.mh (NATDEPFILES): Add bsd-kvm.o.
(LOADLIBES): New variable.
This commit is contained in:
Mark Kettenis
2004-05-22 17:21:36 +00:00
parent 9ea75c57ce
commit 2e0c35398d
6 changed files with 324 additions and 5 deletions
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46
gdb/i386fbsd-nat.c
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@@ -29,9 +29,6 @@
#include "i386-tdep.h"
/* Prevent warning from -Wmissing-prototypes. */
void _initialize_i386fbsd_nat (void);
/* Resume execution of the inferior process.
If STEP is nonzero, single-step it.
If SIGNAL is nonzero, give it that signal. */
@@ -79,6 +76,46 @@ child_resume (ptid_t ptid, int step, enum target_signal signal)
perror_with_name ("ptrace");
}
/* Support for debugging kernel virtual memory images. */
#include <sys/types.h>
#include <machine/pcb.h>
#include "bsd-kvm.h"
static int
i386fbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
/* The following is true for FreeBSD 4.7:
The pcb contains %eip, %ebx, %esp, %ebp, %esi, %edi and %gs.
This accounts for all callee-saved registers specified by the
psABI and then some. Here %esp contains the stack pointer at the
point just after the call to cpu_switch(). 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_esp == 0)
return 0;
pcb->pcb_esp += 4;
regcache_raw_supply (regcache, I386_EDI_REGNUM, &pcb->pcb_edi);
regcache_raw_supply (regcache, I386_ESI_REGNUM, &pcb->pcb_esi);
regcache_raw_supply (regcache, I386_EBP_REGNUM, &pcb->pcb_ebp);
regcache_raw_supply (regcache, I386_ESP_REGNUM, &pcb->pcb_esp);
regcache_raw_supply (regcache, I386_EBX_REGNUM, &pcb->pcb_ebx);
regcache_raw_supply (regcache, I386_EIP_REGNUM, &pcb->pcb_eip);
regcache_raw_supply (regcache, I386_GS_REGNUM, &pcb->pcb_gs);
return 1;
}
/* Prevent warning from -Wmissing-prototypes. */
void _initialize_i386fbsd_nat (void);
void
_initialize_i386fbsd_nat (void)
{
@@ -104,4 +141,7 @@ _initialize_i386fbsd_nat (void)
}
}
#endif
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (i386fbsd_supply_pcb);
}