Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

Add missing comments in rs6000-tdep.c, ppc64-tdep.c and ppc-linux-tdep.c.

Browse Source 
gdb/ChangeLog:

	* ppc-linux-tdep.c (ppc_skip_trampoline_code,
	ppc_canonicalize_syscall, ppc_linux_syscall_record,
	ppc_linux_record_signal, ppc_init_linux_record_tdep): Add comments.
	* ppc64-tdep.c (ppc64_skip_trampoline_code): Likewise.
	* rs6000-tdep.c (rs6000_epilogue_frame_cache,
	rs6000_epilogue_frame_this_id, rs6000_epilogue_frame_prev_register,
	rs6000_epilogue_frame_sniffer, ppc_record_vsr, ppc_process_record_op4,
	ppc_process_record_op19, ppc_process_record_op31,
	ppc_process_record_op59, ppc_process_record_op60,
	ppc_process_record_op63): Likewise.
This commit is contained in:
Wei-cheng Wang
2015-01-19 23:34:07 +08:00
parent 6c1965f995
commit ddeca1dffb
4 changed files with 70 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
gdb/rs6000-tdep.c
View File

@@ -3349,6 +3349,9 @@ static const struct frame_unwind rs6000_frame_unwind =
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)
{
@@ -3385,6 +3388,9 @@ rs6000_epilogue_frame_cache (struct frame_info *this_frame, void **this_cache)
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)
@@ -3400,6 +3406,9 @@ rs6000_epilogue_frame_this_id (struct frame_info *this_frame,
(*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)
@@ -3409,6 +3418,9 @@ rs6000_epilogue_frame_prev_register (struct frame_info *this_frame,
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,
@@ -3422,6 +3434,9 @@ rs6000_epilogue_frame_sniffer (const struct frame_unwind *self,
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,
@@ -3668,7 +3683,9 @@ bfd_uses_spe_extensions (bfd *abfd)
#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)
@@ -3693,11 +3710,12 @@ 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);
@@ -3961,7 +3979,8 @@ ppc_process_record_op4 (struct gdbarch *gdbarch, struct regcache *regcache,
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,
@@ -4004,7 +4023,8 @@ 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,
@@ -4482,7 +4502,8 @@ UNKNOWN_OP:
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,
@@ -4574,7 +4595,8 @@ 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,
@@ -4856,7 +4878,8 @@ 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,