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| author | Pedro Alves <palves@redhat.com> | 2012-02-09 16:06:44 +0000 |
|---|---|---|
| committer | Pedro Alves <palves@redhat.com> | 2012-02-09 16:06:44 +0000 |
| commit | 1916efaf84a102ab118cda679ab9bf1ba032c993 (patch) | |
| tree | 34cbd10b2388cf394e04484fa7ee63217d7e050d /gdb/amd64bsd-nat.c | |
| parent | f4859d94a05ee84d491fcc2bdb221da6670dbe52 (diff) | |
| download | gdb-1916efaf84a102ab118cda679ab9bf1ba032c993.zip gdb-1916efaf84a102ab118cda679ab9bf1ba032c993.tar.gz gdb-1916efaf84a102ab118cda679ab9bf1ba032c993.tar.bz2 | |
2012-02-09 Valery Khromov <valery.khromov@gmail.com>
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.
Diffstat (limited to 'gdb/amd64bsd-nat.c')
| -rw-r--r-- | gdb/amd64bsd-nat.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/gdb/amd64bsd-nat.c b/gdb/amd64bsd-nat.c index b7283e9..74d470d4 100644 --- a/gdb/amd64bsd-nat.c +++ b/gdb/amd64bsd-nat.c @@ -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 */ |