diff options
Diffstat (limited to 'gdb/ia64-linux-nat.c')
| -rw-r--r-- | gdb/ia64-linux-nat.c | 134 |
1 files changed, 69 insertions, 65 deletions
diff --git a/gdb/ia64-linux-nat.c b/gdb/ia64-linux-nat.c index f6492dc..a11cb2c 100644 --- a/gdb/ia64-linux-nat.c +++ b/gdb/ia64-linux-nat.c @@ -43,6 +43,46 @@ #include "inf-ptrace.h" +class ia64_linux_nat_target final : public linux_nat_target +{ +public: + /* Add our register access methods. */ + void fetch_registers (struct regcache *, int) override; + void store_registers (struct regcache *, int) override; + + enum target_xfer_status xfer_partial (enum target_object object, + const char *annex, + gdb_byte *readbuf, + const gdb_byte *writebuf, + ULONGEST offset, ULONGEST len, + ULONGEST *xfered_len) override; + + const struct target_desc *read_description () override; + + /* Override watchpoint routines. */ + + /* The IA-64 architecture can step over a watch point (without + triggering it again) if the "dd" (data debug fault disable) bit + in the processor status word is set. + + This PSR bit is set in + ia64_linux_nat_target::stopped_by_watchpoint when the code there + has determined that a hardware watchpoint has indeed been hit. + The CPU will then be able to execute one instruction without + triggering a watchpoint. */ + int have_steppable_watchpoint () { return 1; } + + int can_use_hw_breakpoint (enum bptype, int, int) override; + int stopped_by_watchpoint () override; + int stopped_data_address (CORE_ADDR *) override; + int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, + struct expression *) override; + int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, + struct expression *) override; +}; + +static ia64_linux_nat_target the_ia64_linux_nat_target; + /* These must match the order of the register names. Some sort of lookup table is needed because the offsets associated @@ -542,11 +582,10 @@ is_power_of_2 (int val) return onecount <= 1; } -static int -ia64_linux_insert_watchpoint (struct target_ops *self, - CORE_ADDR addr, int len, - enum target_hw_bp_type type, - struct expression *cond) +int +ia64_linux_nat_target::insert_watchpoint (CORE_ADDR addr, int len, + enum target_hw_bp_type type, + struct expression *cond) { struct lwp_info *lp; int idx; @@ -598,11 +637,10 @@ ia64_linux_insert_watchpoint (struct target_ops *self, return 0; } -static int -ia64_linux_remove_watchpoint (struct target_ops *self, - CORE_ADDR addr, int len, - enum target_hw_bp_type type, - struct expression *cond) +int +ia64_linux_nat_target::remove_watchpoint (CORE_ADDR addr, int len, + enum target_hw_bp_type type, + struct expression *cond) { int idx; long dbr_addr, dbr_mask; @@ -650,8 +688,8 @@ ia64_linux_new_thread (struct lwp_info *lp) enable_watchpoints_in_psr (lp->ptid); } -static int -ia64_linux_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr_p) +int +ia64_linux_nat_target::stopped_data_address (CORE_ADDR *addr_p) { CORE_ADDR psr; siginfo_t siginfo; @@ -673,11 +711,11 @@ ia64_linux_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr_p) return 1; } -static int -ia64_linux_stopped_by_watchpoint (struct target_ops *ops) +int +ia64_linux_nat_target::stopped_by_watchpoint () { CORE_ADDR addr; - return ia64_linux_stopped_data_address (ops, &addr); + return stopped_data_address (&addr); } static int @@ -765,9 +803,8 @@ ia64_linux_fetch_register (struct regcache *regcache, int regnum) /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this for all registers. */ -static void -ia64_linux_fetch_registers (struct target_ops *ops, - struct regcache *regcache, int regnum) +void +ia64_linux_nat_target::fetch_registers (struct regcache *regcache, int regnum) { if (regnum == -1) for (regnum = 0; @@ -820,9 +857,8 @@ ia64_linux_store_register (const struct regcache *regcache, int regnum) /* Store register REGNUM back into the inferior. If REGNUM is -1, do this for all registers. */ -static void -ia64_linux_store_registers (struct target_ops *ops, - struct regcache *regcache, int regnum) +void +ia64_linux_nat_target::store_registers (struct regcache *regcache, int regnum) { if (regnum == -1) for (regnum = 0; @@ -833,18 +869,14 @@ ia64_linux_store_registers (struct target_ops *ops, ia64_linux_store_register (regcache, regnum); } +/* Implement the xfer_partial target_ops method. */ -static target_xfer_partial_ftype *super_xfer_partial; - -/* Implement the to_xfer_partial target_ops method. */ - -static enum target_xfer_status -ia64_linux_xfer_partial (struct target_ops *ops, - enum target_object object, - const char *annex, - gdb_byte *readbuf, const gdb_byte *writebuf, - ULONGEST offset, ULONGEST len, - ULONGEST *xfered_len) +enum target_xfer_status +ia64_linux_nat_target::xfer_partial (enum target_object object, + const char *annex, + gdb_byte *readbuf, const gdb_byte *writebuf, + ULONGEST offset, ULONGEST len, + ULONGEST *xfered_len) { if (object == TARGET_OBJECT_UNWIND_TABLE && readbuf != NULL) { @@ -875,8 +907,8 @@ ia64_linux_xfer_partial (struct target_ops *ops, return TARGET_XFER_OK; } - return super_xfer_partial (ops, object, annex, readbuf, writebuf, - offset, len, xfered_len); + return linux_nat_target::xfer_partial (object, annex, readbuf, writebuf, + offset, len, xfered_len); } /* For break.b instruction ia64 CPU forgets the immediate value and generates @@ -894,39 +926,11 @@ ia64_linux_status_is_event (int status) void _initialize_ia64_linux_nat (void) { - struct target_ops *t; - - /* Fill in the generic GNU/Linux methods. */ - t = linux_target (); - - /* Override the default fetch/store register routines. */ - t->to_fetch_registers = ia64_linux_fetch_registers; - t->to_store_registers = ia64_linux_store_registers; - - /* Override the default to_xfer_partial. */ - super_xfer_partial = t->to_xfer_partial; - t->to_xfer_partial = ia64_linux_xfer_partial; - - /* Override watchpoint routines. */ - - /* The IA-64 architecture can step over a watch point (without triggering - it again) if the "dd" (data debug fault disable) bit in the processor - status word is set. - - This PSR bit is set in ia64_linux_stopped_by_watchpoint when the - code there has determined that a hardware watchpoint has indeed - been hit. The CPU will then be able to execute one instruction - without triggering a watchpoint. */ - - t->to_have_steppable_watchpoint = 1; - t->to_can_use_hw_breakpoint = ia64_linux_can_use_hw_breakpoint; - t->to_stopped_by_watchpoint = ia64_linux_stopped_by_watchpoint; - t->to_stopped_data_address = ia64_linux_stopped_data_address; - t->to_insert_watchpoint = ia64_linux_insert_watchpoint; - t->to_remove_watchpoint = ia64_linux_remove_watchpoint; + struct target_ops *t = &the_ia64_linux_nat_target; /* Register the target. */ - linux_nat_add_target (t); + linux_target = &the_ia64_linux_nat_target; + add_target (t); linux_nat_set_new_thread (t, ia64_linux_new_thread); linux_nat_set_status_is_event (t, ia64_linux_status_is_event); } |