return 0;
}
-/* Implementation of gdbarch_in_function_epilogue_p. */
+/* Implement the stack_frame_destroyed_p gdbarch method. */
static int
-rs6000_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+rs6000_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
return rs6000_in_function_epilogue_frame_p (get_current_frame (),
gdbarch, pc);
rs6000_in_solib_return_trampoline (struct gdbarch *gdbarch,
CORE_ADDR pc, const char *name)
{
- return name && !strncmp (name, "@FIX", 4);
+ return name && startswith (name, "@FIX");
}
/* Skip code that the user doesn't want to see when stepping:
default_frame_sniffer
};
+/* Allocate and initialize a frame cache for an epilogue frame.
+ SP is restored and prev-PC is stored in LR. */
+
static struct rs6000_frame_cache *
rs6000_epilogue_frame_cache (struct frame_info *this_frame, void **this_cache)
{
- volatile struct gdb_exception ex;
struct rs6000_frame_cache *cache;
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
(*this_cache) = cache;
cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
/* At this point the stack looks as if we just entered the
function, and the return address is stored in LR. */
trad_frame_set_value (cache->saved_regs,
gdbarch_pc_regnum (gdbarch), lr);
}
- if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
- throw_exception (ex);
+ CATCH (ex, RETURN_MASK_ERROR)
+ {
+ if (ex.error != NOT_AVAILABLE_ERROR)
+ throw_exception (ex);
+ }
+ END_CATCH
return cache;
}
+/* Implementation of frame_unwind.this_id, as defined in frame_unwind.h.
+ Return the frame ID of an epilogue frame. */
+
static void
rs6000_epilogue_frame_this_id (struct frame_info *this_frame,
void **this_cache, struct frame_id *this_id)
(*this_id) = frame_id_build (info->base, pc);
}
+/* Implementation of frame_unwind.prev_register, as defined in frame_unwind.h.
+ Return the register value of REGNUM in previous frame. */
+
static struct value *
rs6000_epilogue_frame_prev_register (struct frame_info *this_frame,
void **this_cache, int regnum)
return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
+/* Implementation of frame_unwind.sniffer, as defined in frame_unwind.h.
+ Check whether this an epilogue frame. */
+
static int
rs6000_epilogue_frame_sniffer (const struct frame_unwind *self,
struct frame_info *this_frame,
return 0;
}
+/* Frame unwinder for epilogue frame. This is required for reverse step-over
+ a function without debug information. */
+
static const struct frame_unwind rs6000_epilogue_frame_unwind =
{
NORMAL_FRAME,
#define PPC_XT(insn) ((PPC_TX (insn) << 5) | PPC_T (insn))
#define PPC_XER_NB(xer) (xer & 0x7f)
-/* Record Vector-Scalar Registers. */
+/* Record Vector-Scalar Registers.
+ For VSR less than 32, it's represented by an FPR and an VSR-upper register.
+ Otherwise, it's just a VR register. Record them accordingly. */
static int
ppc_record_vsr (struct regcache *regcache, struct gdbarch_tdep *tdep, int vsr)
return 0;
}
-/* Parse instructions of primary opcode-4. */
+/* Parse and record instructions primary opcode-4 at ADDR.
+ Return 0 if successful. */
static int
ppc_process_record_op4 (struct gdbarch *gdbarch, struct regcache *regcache,
- CORE_ADDR addr, uint32_t insn)
+ CORE_ADDR addr, uint32_t insn)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int ext = PPC_FIELD (insn, 21, 11);
return -1;
}
-/* Parse instructions of primary opcode-19. */
+/* Parse and record instructions of primary opcode-19 at ADDR.
+ Return 0 if successful. */
static int
ppc_process_record_op19 (struct gdbarch *gdbarch, struct regcache *regcache,
return -1;
}
-/* Parse instructions of primary opcode-31. */
+/* Parse and record instructions of primary opcode-31 at ADDR.
+ Return 0 if successful. */
static int
ppc_process_record_op31 (struct gdbarch *gdbarch, struct regcache *regcache,
return -1;
}
-/* Parse instructions of primary opcode-59. */
+/* Parse and record instructions of primary opcode-59 at ADDR.
+ Return 0 if successful. */
static int
ppc_process_record_op59 (struct gdbarch *gdbarch, struct regcache *regcache,
return -1;
}
-/* Parse instructions of primary opcode-60. */
+/* Parse and record instructions of primary opcode-60 at ADDR.
+ Return 0 if successful. */
static int
ppc_process_record_op60 (struct gdbarch *gdbarch, struct regcache *regcache,
return -1;
}
-/* Parse instructions of primary opcode-63. */
+/* Parse and record instructions of primary opcode-63 at ADDR.
+ Return 0 if successful. */
static int
ppc_process_record_op63 (struct gdbarch *gdbarch, struct regcache *regcache,
set_gdbarch_push_dummy_call (gdbarch, ppc64_sysv_abi_push_dummy_call);
set_gdbarch_skip_prologue (gdbarch, rs6000_skip_prologue);
- set_gdbarch_in_function_epilogue_p (gdbarch, rs6000_in_function_epilogue_p);
+ set_gdbarch_stack_frame_destroyed_p (gdbarch, rs6000_stack_frame_destroyed_p);
set_gdbarch_skip_main_prologue (gdbarch, rs6000_skip_main_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
struct cmd_list_element *c)
{
struct gdbarch_info info;
- enum powerpc_vector_abi vector_abi;
+ int vector_abi;
for (vector_abi = POWERPC_VEC_AUTO;
vector_abi != POWERPC_VEC_LAST;
projects / deliverable / binutils-gdb.git / blobdiff