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| author | Ulrich Weigand <uweigand@de.ibm.com> | 2009-09-29 00:53:04 +0000 |
|---|---|---|
| committer | Ulrich Weigand <uweigand@de.ibm.com> | 2009-09-29 00:53:04 +0000 |
| commit | 99e40580307d91e399af1c0293a6676b10efefea (patch) | |
| tree | 3c951a5f939f575645b767865063ddbc6ddfd0b3 /gdb/gdbarch.h | |
| parent | 69368a60a4878ec4ef1060732020e9eaf19b32b0 (diff) | |
| download | gdb-99e40580307d91e399af1c0293a6676b10efefea.zip gdb-99e40580307d91e399af1c0293a6676b10efefea.tar.gz gdb-99e40580307d91e399af1c0293a6676b10efefea.tar.bz2 | |
* gdbarch.sh (displaced_step_hw_singlestep): New callback.
* gdbarch.c, gdbarch.h: Regenerate.
* arch-utils.c (default_displaced_step_hw_singlestep): New function.
* arch-utils.h (default_displaced_step_hw_singlestep): Add prototype.
* ppc-linux-tdep.c (ppc_displaced_step_hw_singlestep): New function.
(rs6000_gdbarch_init): Install it.
* infrun.c (displaced_step_fixup): Use new callback to determine
whether to "step" or "continue" displaced copy.
(resume): Likewise. Do not call maybe_software_singlestep
for displaced stepping.
(maybe_software_singlestep): Do not handle displaced stepping.
Diffstat (limited to 'gdb/gdbarch.h')
| -rw-r--r-- | gdb/gdbarch.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index 950b7ca..f7b0355 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -734,6 +734,20 @@ typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype) extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs); extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn); +/* Return true if GDB should use hardware single-stepping to execute + the displaced instruction identified by CLOSURE. If false, + GDB will simply restart execution at the displaced instruction + location, and it is up to the target to ensure GDB will receive + control again (e.g. by placing a software breakpoint instruction + into the displaced instruction buffer). + + The default implementation returns false on all targets that + provide a gdbarch_software_single_step routine, and true otherwise. */ + +typedef int (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure); +extern int gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure); +extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep); + /* Fix up the state resulting from successfully single-stepping a displaced instruction, to give the result we would have gotten from stepping the instruction in its original location. |