/* Trace file support in GDB.
- Copyright (C) 1997-2015 Free Software Foundation, Inc.
+ Copyright (C) 1997-2016 Free Software Foundation, Inc.
This file is part of GDB.
/* Write out the size of a register block. */
writer->ops->write_regblock_type (writer, trace_regblock_size);
+ /* Write out the target description info. */
+ writer->ops->write_tdesc (writer);
+
/* Write out status of the tracing run (aka "tstatus" info). */
writer->ops->write_status (writer, ts);
tracefile_fetch_registers (struct regcache *regcache, int regno)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- int regn, pc_regno;
+ struct tracepoint *tp = get_tracepoint (get_tracepoint_number ());
+ int regn;
/* We get here if no register data has been found. Mark registers
as unavailable. */
/* We can often usefully guess that the PC is going to be the same
as the address of the tracepoint. */
- pc_regno = gdbarch_pc_regnum (gdbarch);
-
- /* XXX This guessing code below only works if the PC register isn't
- a pseudo-register. The value of a pseudo-register isn't stored
- in the (non-readonly) regcache -- instead it's recomputed
- (probably from some other cached raw register) whenever the
- register is read. This guesswork should probably move to some
- higher layer. */
- if (pc_regno < 0 || pc_regno >= gdbarch_num_regs (gdbarch))
+ if (tp == NULL || tp->base.loc == NULL)
return;
- if (regno == -1 || regno == pc_regno)
+ /* But don't try to guess if tracepoint is multi-location... */
+ if (tp->base.loc->next)
{
- struct tracepoint *tp = get_tracepoint (get_tracepoint_number ());
- gdb_byte *regs;
-
- if (tp && tp->base.loc)
- {
- /* But don't try to guess if tracepoint is multi-location... */
- if (tp->base.loc->next)
- {
- warning (_("Tracepoint %d has multiple "
- "locations, cannot infer $pc"),
- tp->base.number);
- return;
- }
- /* ... or does while-stepping. */
- if (tp->step_count > 0)
- {
- warning (_("Tracepoint %d does while-stepping, "
- "cannot infer $pc"),
- tp->base.number);
- return;
- }
-
- regs = (gdb_byte *) alloca (register_size (gdbarch, pc_regno));
- store_unsigned_integer (regs, register_size (gdbarch, pc_regno),
- gdbarch_byte_order (gdbarch),
- tp->base.loc->address);
- regcache_raw_supply (regcache, pc_regno, regs);
- }
+ warning (_("Tracepoint %d has multiple "
+ "locations, cannot infer $pc"),
+ tp->base.number);
+ return;
}
+ /* ... or does while-stepping. */
+ else if (tp->step_count > 0)
+ {
+ warning (_("Tracepoint %d does while-stepping, "
+ "cannot infer $pc"),
+ tp->base.number);
+ return;
+ }
+
+ /* Guess what we can from the tracepoint location. */
+ gdbarch_guess_tracepoint_registers (gdbarch, regcache,
+ tp->base.loc->address);
}
/* This is the implementation of target_ops method to_has_all_memory. */