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2012-02-09 Valery Khromov <valery.khromov@gmail.com>

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PR gdb/12953
	* Makefile.in (HFILES_NO_SRCDIR): Add amd64bsd-nat.h.
	* amd64bsd-nat.c: Add support for debug registers (adapted from
	i386bsd-nat.c).
	[HAVE_PT_GETDBREGS] (amd64bsd_dr_get, amd64bsd_dr_set)
	(amd64bsd_dr_set_control, amd64bsd_dr_set_addr)
	(amd64bsd_dr_get_addr, amd64bsd_dr_get_status)
	(amd64bsd_dr_get_control): New functions.
	* amd64bsd-nat.h: New file (adapted from i386bsd-nat.h).
	* amd64fbsd-nat.c: Include "amd64bsd-nat.h", "i386-nat.h".
	[HAVE_PT_GETDBREGS] (_initialize_amd64fbsd_nat): Add hardware
	watchpoints initialization.
	* config/i386/fbsd64.mh (NATDEPFILES): Add i386-nat.o.
This commit is contained in:
Pedro Alves
2012-02-09 16:06:44 +00:00
parent f4859d94a0
commit 1916efaf84
6 changed files with 141 additions and 2 deletions
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72
gdb/amd64bsd-nat.c
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@@ -125,3 +125,75 @@ amd64bsd_target (void)
t->to_store_registers = amd64bsd_store_inferior_registers;
return t;
}
/* Support for debug registers. */
#ifdef HAVE_PT_GETDBREGS
static unsigned long
amd64bsd_dr_get (ptid_t ptid, int regnum)
{
struct dbreg dbregs;
if (ptrace (PT_GETDBREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
perror_with_name (_("Couldn't read debug registers"));
return DBREG_DRX ((&dbregs), regnum);
}
static void
amd64bsd_dr_set (int regnum, unsigned long value)
{
struct dbreg dbregs;
if (ptrace (PT_GETDBREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
perror_with_name (_("Couldn't get debug registers"));
/* For some mysterious reason, some of the reserved bits in the
debug control register get set. Mask these off, otherwise the
ptrace call below will fail. */
DBREG_DRX ((&dbregs), 7) &= ~(0xffffffff0000fc00);
DBREG_DRX ((&dbregs), regnum) = value;
if (ptrace (PT_SETDBREGS, PIDGET (inferior_ptid),
(PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
perror_with_name (_("Couldn't write debug registers"));
}
void
amd64bsd_dr_set_control (unsigned long control)
{
amd64bsd_dr_set (7, control);
}
void
amd64bsd_dr_set_addr (int regnum, CORE_ADDR addr)
{
gdb_assert (regnum >= 0 && regnum <= 4);
amd64bsd_dr_set (regnum, addr);
}
CORE_ADDR
amd64bsd_dr_get_addr (int regnum)
{
return amd64bsd_dr_get (inferior_ptid, regnum);
}
unsigned long
amd64bsd_dr_get_status (void)
{
return amd64bsd_dr_get (inferior_ptid, 6);
}
unsigned long
amd64bsd_dr_get_control (void)
{
return amd64bsd_dr_get (inferior_ptid, 7);
}
#endif /* PT_GETDBREGS */