struct rs6000_framedata * fdatap);
static CORE_ADDR frame_initial_stack_address (struct frame_info *);
+/* Is REGNO an AltiVec register? Return 1 if so, 0 otherwise. */
+int
+altivec_register_p (int regno)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ if (tdep->ppc_vr0_regnum < 0 || tdep->ppc_vrsave_regnum < 0)
+ return 0;
+ else
+ return (regno >= tdep->ppc_vr0_regnum && regno <= tdep->ppc_vrsave_regnum);
+}
+
/* Read a LEN-byte address from debugged memory address MEMADDR. */
static CORE_ADDR
fi->extra_info = (struct frame_extra_info *)
frame_obstack_alloc (sizeof (struct frame_extra_info));
fi->extra_info->initial_sp = 0;
- if (fi->next != (CORE_ADDR) 0
+ if (get_next_frame (fi) != (CORE_ADDR) 0
&& fi->pc < TEXT_SEGMENT_BASE)
/* We're in get_prev_frame */
/* and this is a special signal frame. */
/* (fi->pc will be some low address in the kernel, */
/* to which the signal handler returns). */
- fi->signal_handler_caller = 1;
+ deprecated_set_frame_type (fi, SIGTRAMP_FRAME);
}
/* Put here the code to store, into a struct frame_saved_regs,
fi = get_current_frame ();
if (fi != NULL)
- dest = read_memory_addr (fi->frame + SIG_FRAME_PC_OFFSET,
+ dest = read_memory_addr (get_frame_base (fi) + SIG_FRAME_PC_OFFSET,
gdbarch_tdep (current_gdbarch)->wordsize);
}
}
int prev_insn_was_prologue_insn = 1;
int num_skip_non_prologue_insns = 0;
const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
/* Attempt to find the end of the prologue when no limit is specified.
Note that refine_prologue_limit() has been written so that it may
{ /* mr r31, r1 */
fdata->frameless = 0;
framep = 1;
- fdata->alloca_reg = 31;
+ fdata->alloca_reg = (tdep->ppc_gp0_regnum + 31);
continue;
/* Another way to set up the frame pointer. */
{ /* addi rX, r1, 0x0 */
fdata->frameless = 0;
framep = 1;
- fdata->alloca_reg = (op & ~0x38010000) >> 21;
+ fdata->alloca_reg = (tdep->ppc_gp0_regnum
+ + ((op & ~0x38010000) >> 21));
continue;
}
/* AltiVec related instructions. */
int ii, wordsize;
pc = read_pc ();
- sp = FRAME_FP (frame);
+ sp = get_frame_base (frame);
- if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
+ if (DEPRECATED_PC_IN_CALL_DUMMY (frame->pc,
+ get_frame_base (frame),
+ get_frame_base (frame)))
{
generic_pop_dummy_frame ();
flush_cached_frames ();
}
/* Make sure that all registers are valid. */
- read_register_bytes (0, NULL, REGISTER_BYTES);
+ deprecated_read_register_bytes (0, NULL, REGISTER_BYTES);
/* Figure out previous %pc value. If the function is frameless, it is
still in the link register, otherwise walk the frames and retrieve the
addr = prev_sp + fdata.gpr_offset;
for (ii = fdata.saved_gpr; ii <= 31; ++ii)
{
- read_memory (addr, ®isters[REGISTER_BYTE (ii)], wordsize);
+ read_memory (addr, &deprecated_registers[REGISTER_BYTE (ii)],
+ wordsize);
addr += wordsize;
}
}
addr = prev_sp + fdata.fpr_offset;
for (ii = fdata.saved_fpr; ii <= 31; ++ii)
{
- read_memory (addr, ®isters[REGISTER_BYTE (ii + FP0_REGNUM)], 8);
+ read_memory (addr, &deprecated_registers[REGISTER_BYTE (ii + FP0_REGNUM)], 8);
addr += 8;
}
}
}
}
+/* All the ABI's require 16 byte alignment. */
+static CORE_ADDR
+rs6000_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
+{
+ return (addr & -16);
+}
+
/* Pass the arguments in either registers, or in the stack. In RS/6000,
the first eight words of the argument list (that might be less than
eight parameters if some parameters occupy more than one word) are
printf_unfiltered (
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
- memcpy (®isters[REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
+ memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
VALUE_CONTENTS (arg),
len);
++f_argno;
/* Argument takes more than one register. */
while (argbytes < len)
{
- memset (®isters[REGISTER_BYTE (ii + 3)], 0, reg_size);
- memcpy (®isters[REGISTER_BYTE (ii + 3)],
+ memset (&deprecated_registers[REGISTER_BYTE (ii + 3)], 0,
+ reg_size);
+ memcpy (&deprecated_registers[REGISTER_BYTE (ii + 3)],
((char *) VALUE_CONTENTS (arg)) + argbytes,
(len - argbytes) > reg_size
? reg_size : len - argbytes);
{
/* Argument can fit in one register. No problem. */
int adj = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? reg_size - len : 0;
- memset (®isters[REGISTER_BYTE (ii + 3)], 0, reg_size);
- memcpy ((char *)®isters[REGISTER_BYTE (ii + 3)] + adj,
+ memset (&deprecated_registers[REGISTER_BYTE (ii + 3)], 0, reg_size);
+ memcpy ((char *)&deprecated_registers[REGISTER_BYTE (ii + 3)] + adj,
VALUE_CONTENTS (arg), len);
}
++argno;
printf_unfiltered (
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
- memcpy (®isters[REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
+ memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
VALUE_CONTENTS (arg),
len);
++f_argno;
}
}
-/* Keep structure return address in this variable.
- FIXME: This is a horrid kludge which should not be allowed to continue
- living. This only allows a single nested call to a structure-returning
- function. Come on, guys! -- gnu@cygnus.com, Aug 92 */
-
-static CORE_ADDR rs6000_struct_return_address;
-
/* Return whether handle_inferior_event() should proceed through code
starting at PC in function NAME when stepping.
/* Don't even think about framelessness except on the innermost frame
or if the function was interrupted by a signal. */
- if (fi->next != NULL && !fi->next->signal_handler_caller)
+ if (get_next_frame (fi) != NULL
+ && !(get_frame_type (get_next_frame (fi)) == SIGTRAMP_FRAME))
return 0;
func_start = get_pc_function_start (fi->pc);
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
int wordsize = tdep->wordsize;
- if (fi->signal_handler_caller)
- return read_memory_addr (fi->frame + SIG_FRAME_PC_OFFSET, wordsize);
+ if ((get_frame_type (fi) == SIGTRAMP_FRAME))
+ return read_memory_addr (get_frame_base (fi) + SIG_FRAME_PC_OFFSET,
+ wordsize);
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM);
+ if (DEPRECATED_PC_IN_CALL_DUMMY (fi->pc,
+ get_frame_base (fi),
+ get_frame_base (fi)))
+ return deprecated_read_register_dummy (fi->pc,
+ get_frame_base (fi), PC_REGNUM);
func_start = get_pc_function_start (fi->pc);
(void) skip_prologue (func_start, fi->pc, &fdata);
- if (fdata.lr_offset == 0 && fi->next != NULL)
+ if (fdata.lr_offset == 0 && get_next_frame (fi) != NULL)
{
- if (fi->next->signal_handler_caller)
- return read_memory_addr (fi->next->frame + SIG_FRAME_LR_OFFSET,
+ if ((get_frame_type (get_next_frame (fi)) == SIGTRAMP_FRAME))
+ return read_memory_addr ((get_frame_base (get_next_frame (fi))
+ + SIG_FRAME_LR_OFFSET),
wordsize);
+ else if (DEPRECATED_PC_IN_CALL_DUMMY (get_next_frame (fi)->pc, 0, 0))
+ /* The link register wasn't saved by this frame and the next
+ (inner, newer) frame is a dummy. Get the link register
+ value by unwinding it from that [dummy] frame. */
+ {
+ ULONGEST lr;
+ frame_unwind_unsigned_register (get_next_frame (fi),
+ tdep->ppc_lr_regnum, &lr);
+ return lr;
+ }
else
return read_memory_addr (FRAME_CHAIN (fi) + tdep->lr_frame_offset,
wordsize);
if (fdata.alloca_reg < 0)
{
- fi->extra_info->initial_sp = fi->frame;
+ fi->extra_info->initial_sp = get_frame_base (fi);
return fi->extra_info->initial_sp;
}
/* NOTE: cagney/2002-04-17: At present the only time
frame_register_read will fail is when the register isn't
available. If that does happen, use the frame. */
- fi->extra_info->initial_sp = fi->frame;
+ fi->extra_info->initial_sp = get_frame_base (fi);
}
return fi->extra_info->initial_sp;
}
CORE_ADDR fp, fpp, lr;
int wordsize = gdbarch_tdep (current_gdbarch)->wordsize;
- if (PC_IN_CALL_DUMMY (thisframe->pc, thisframe->frame, thisframe->frame))
- return thisframe->frame; /* dummy frame same as caller's frame */
+ if (DEPRECATED_PC_IN_CALL_DUMMY (thisframe->pc,
+ get_frame_base (thisframe),
+ get_frame_base (thisframe)))
+ /* A dummy frame always correctly chains back to the previous
+ frame. */
+ return read_memory_addr (get_frame_base (thisframe), wordsize);
if (inside_entry_file (thisframe->pc) ||
thisframe->pc == entry_point_address ())
return 0;
- if (thisframe->signal_handler_caller)
- fp = read_memory_addr (thisframe->frame + SIG_FRAME_FP_OFFSET,
- wordsize);
- else if (thisframe->next != NULL
- && thisframe->next->signal_handler_caller
+ if ((get_frame_type (thisframe) == SIGTRAMP_FRAME))
+ fp = read_memory_addr (get_frame_base (thisframe) + SIG_FRAME_FP_OFFSET,
+ wordsize);
+ else if (get_next_frame (thisframe) != NULL
+ && (get_frame_type (get_next_frame (thisframe)) == SIGTRAMP_FRAME)
&& FRAMELESS_FUNCTION_INVOCATION (thisframe))
/* A frameless function interrupted by a signal did not change the
frame pointer. */
- fp = FRAME_FP (thisframe);
+ fp = get_frame_base (thisframe);
else
- fp = read_memory_addr ((thisframe)->frame, wordsize);
-
- lr = read_register (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum);
- if (lr == entry_point_address ())
- if (fp != 0 && (fpp = read_memory_addr (fp, wordsize)) != 0)
- if (PC_IN_CALL_DUMMY (lr, fpp, fpp))
- return fpp;
-
+ fp = read_memory_addr (get_frame_base (thisframe), wordsize);
return fp;
}
}
/* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function.
-
- In RS/6000, struct return addresses are passed as an extra parameter in r3.
- In function return, callee is not responsible of returning this address
- back. Since gdb needs to find it, we will store in a designated variable
- `rs6000_struct_return_address'. */
+ subroutine will return. */
static void
rs6000_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
- write_register (3, addr);
- rs6000_struct_return_address = addr;
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ write_register (tdep->ppc_gp0_regnum + 3, addr);
}
/* Write into appropriate registers a function return value
memcpy (reg_val_buf, valbuf + copied, reg_size);
copied += reg_size;
- write_register_gen (regnum, reg_val_buf);
+ deprecated_write_register_gen (regnum, reg_val_buf);
i++;
}
}
Say a double_double_double type could be returned in
FPR1/FPR2/FPR3 triple. */
- write_register_bytes (REGISTER_BYTE (FP0_REGNUM + 1), valbuf,
- TYPE_LENGTH (type));
+ deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM + 1), valbuf,
+ TYPE_LENGTH (type));
else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
{
if (TYPE_LENGTH (type) == 16
&& TYPE_VECTOR (type))
- write_register_bytes (REGISTER_BYTE (tdep->ppc_vr0_regnum + 2),
- valbuf, TYPE_LENGTH (type));
+ deprecated_write_register_bytes (REGISTER_BYTE (tdep->ppc_vr0_regnum + 2),
+ valbuf, TYPE_LENGTH (type));
}
else
/* Everything else is returned in GPR3 and up. */
- write_register_bytes (REGISTER_BYTE (gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum + 3),
- valbuf, TYPE_LENGTH (type));
+ deprecated_write_register_bytes (REGISTER_BYTE (gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum + 3),
+ valbuf, TYPE_LENGTH (type));
}
/* Extract from an array REGBUF containing the (raw) register state
as a CORE_ADDR (or an expression that can be used as one). */
static CORE_ADDR
-rs6000_extract_struct_value_address (char *regbuf)
-{
- return rs6000_struct_return_address;
+rs6000_extract_struct_value_address (struct regcache *regcache)
+{
+ /* FIXME: cagney/2002-09-26: PR gdb/724: When making an inferior
+ function call GDB knows the address of the struct return value
+ and hence, should not need to call this function. Unfortunately,
+ the current hand_function_call() code only saves the most recent
+ struct address leading to occasional calls. The code should
+ instead maintain a stack of such addresses (in the dummy frame
+ object). */
+ /* NOTE: cagney/2002-09-26: Return 0 which indicates that we've
+ really got no idea where the return value is being stored. While
+ r3, on function entry, contained the address it will have since
+ been reused (scratch) and hence wouldn't be valid */
+ return 0;
}
/* Return whether PC is in a dummy function call.
break;
case bfd_mach_ppc_7400:
tdep->ppc_vr0_regnum = 119;
- tdep->ppc_vrsave_regnum = 153;
+ tdep->ppc_vrsave_regnum = 152;
tdep->ppc_ev0_regnum = -1;
tdep->ppc_ev31_regnum = -1;
break;
set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_char_signed (gdbarch, 0);
- set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
set_gdbarch_call_dummy_length (gdbarch, 0);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
- set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
set_gdbarch_call_dummy_p (gdbarch, 1);
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
- set_gdbarch_get_saved_register (gdbarch, generic_unwind_get_saved_register);
set_gdbarch_fix_call_dummy (gdbarch, rs6000_fix_call_dummy);
+ set_gdbarch_frame_align (gdbarch, rs6000_frame_align);
set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
set_gdbarch_push_return_address (gdbarch, ppc_push_return_address);
set_gdbarch_push_arguments (gdbarch, rs6000_push_arguments);
set_gdbarch_store_struct_return (gdbarch, rs6000_store_struct_return);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, rs6000_extract_struct_value_address);
+ set_gdbarch_extract_struct_value_address (gdbarch, rs6000_extract_struct_value_address);
set_gdbarch_pop_frame (gdbarch, rs6000_pop_frame);
set_gdbarch_skip_prologue (gdbarch, rs6000_skip_prologue);
projects / deliverable / binutils-gdb.git / blobdiff