1 /* SPU target-dependent code for GDB, the GNU debugger.
2 Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
4 Contributed by Ulrich Weigand <uweigand@de.ibm.com>.
5 Based on a port by Sid Manning <sid@us.ibm.com>.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "arch-utils.h"
27 #include "gdb_string.h"
28 #include "gdb_assert.h"
30 #include "frame-unwind.h"
31 #include "frame-base.h"
32 #include "trad-frame.h"
41 #include "reggroups.h"
42 #include "floatformat.h"
48 /* The tdep structure. */
51 /* SPU-specific vector type. */
52 struct type
*spu_builtin_type_vec128
;
56 /* SPU-specific vector type. */
58 spu_builtin_type_vec128 (struct gdbarch
*gdbarch
)
60 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
62 if (!tdep
->spu_builtin_type_vec128
)
66 t
= init_composite_type ("__spu_builtin_type_vec128", TYPE_CODE_UNION
);
67 append_composite_type_field (t
, "uint128", builtin_type_int128
);
68 append_composite_type_field (t
, "v2_int64",
69 init_vector_type (builtin_type_int64
, 2));
70 append_composite_type_field (t
, "v4_int32",
71 init_vector_type (builtin_type_int32
, 4));
72 append_composite_type_field (t
, "v8_int16",
73 init_vector_type (builtin_type_int16
, 8));
74 append_composite_type_field (t
, "v16_int8",
75 init_vector_type (builtin_type_int8
, 16));
76 append_composite_type_field (t
, "v2_double",
77 init_vector_type (builtin_type_double
, 2));
78 append_composite_type_field (t
, "v4_float",
79 init_vector_type (builtin_type_float
, 4));
81 TYPE_FLAGS (t
) |= TYPE_FLAG_VECTOR
;
82 TYPE_NAME (t
) = "spu_builtin_type_vec128";
84 tdep
->spu_builtin_type_vec128
= t
;
87 return tdep
->spu_builtin_type_vec128
;
91 /* The list of available "info spu " commands. */
92 static struct cmd_list_element
*infospucmdlist
= NULL
;
97 spu_register_name (struct gdbarch
*gdbarch
, int reg_nr
)
99 static char *register_names
[] =
101 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
102 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
103 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
104 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
105 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
106 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
107 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
108 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
109 "r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71",
110 "r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79",
111 "r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87",
112 "r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95",
113 "r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103",
114 "r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111",
115 "r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119",
116 "r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127",
117 "id", "pc", "sp", "fpscr", "srr0", "lslr", "decr", "decr_status"
122 if (reg_nr
>= sizeof register_names
/ sizeof *register_names
)
125 return register_names
[reg_nr
];
129 spu_register_type (struct gdbarch
*gdbarch
, int reg_nr
)
131 if (reg_nr
< SPU_NUM_GPRS
)
132 return spu_builtin_type_vec128 (gdbarch
);
137 return builtin_type_uint32
;
140 return builtin_type_void_func_ptr
;
143 return builtin_type_void_data_ptr
;
145 case SPU_FPSCR_REGNUM
:
146 return builtin_type_uint128
;
148 case SPU_SRR0_REGNUM
:
149 return builtin_type_uint32
;
151 case SPU_LSLR_REGNUM
:
152 return builtin_type_uint32
;
154 case SPU_DECR_REGNUM
:
155 return builtin_type_uint32
;
157 case SPU_DECR_STATUS_REGNUM
:
158 return builtin_type_uint32
;
161 internal_error (__FILE__
, __LINE__
, "invalid regnum");
165 /* Pseudo registers for preferred slots - stack pointer. */
168 spu_pseudo_register_read_spu (struct regcache
*regcache
, const char *regname
,
175 regcache_raw_read_unsigned (regcache
, SPU_ID_REGNUM
, &id
);
176 xsnprintf (annex
, sizeof annex
, "%d/%s", (int) id
, regname
);
177 memset (reg
, 0, sizeof reg
);
178 target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
181 store_unsigned_integer (buf
, 4, strtoulst (reg
, NULL
, 16));
185 spu_pseudo_register_read (struct gdbarch
*gdbarch
, struct regcache
*regcache
,
186 int regnum
, gdb_byte
*buf
)
195 regcache_raw_read (regcache
, SPU_RAW_SP_REGNUM
, reg
);
196 memcpy (buf
, reg
, 4);
199 case SPU_FPSCR_REGNUM
:
200 regcache_raw_read_unsigned (regcache
, SPU_ID_REGNUM
, &id
);
201 xsnprintf (annex
, sizeof annex
, "%d/fpcr", (int) id
);
202 target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
, buf
, 0, 16);
205 case SPU_SRR0_REGNUM
:
206 spu_pseudo_register_read_spu (regcache
, "srr0", buf
);
209 case SPU_LSLR_REGNUM
:
210 spu_pseudo_register_read_spu (regcache
, "lslr", buf
);
213 case SPU_DECR_REGNUM
:
214 spu_pseudo_register_read_spu (regcache
, "decr", buf
);
217 case SPU_DECR_STATUS_REGNUM
:
218 spu_pseudo_register_read_spu (regcache
, "decr_status", buf
);
222 internal_error (__FILE__
, __LINE__
, _("invalid regnum"));
227 spu_pseudo_register_write_spu (struct regcache
*regcache
, const char *regname
,
234 regcache_raw_read_unsigned (regcache
, SPU_ID_REGNUM
, &id
);
235 xsnprintf (annex
, sizeof annex
, "%d/%s", (int) id
, regname
);
236 xsnprintf (reg
, sizeof reg
, "0x%s",
237 phex_nz (extract_unsigned_integer (buf
, 4), 4));
238 target_write (¤t_target
, TARGET_OBJECT_SPU
, annex
,
239 reg
, 0, strlen (reg
));
243 spu_pseudo_register_write (struct gdbarch
*gdbarch
, struct regcache
*regcache
,
244 int regnum
, const gdb_byte
*buf
)
253 regcache_raw_read (regcache
, SPU_RAW_SP_REGNUM
, reg
);
254 memcpy (reg
, buf
, 4);
255 regcache_raw_write (regcache
, SPU_RAW_SP_REGNUM
, reg
);
258 case SPU_FPSCR_REGNUM
:
259 regcache_raw_read_unsigned (regcache
, SPU_ID_REGNUM
, &id
);
260 xsnprintf (annex
, sizeof annex
, "%d/fpcr", (int) id
);
261 target_write (¤t_target
, TARGET_OBJECT_SPU
, annex
, buf
, 0, 16);
264 case SPU_SRR0_REGNUM
:
265 spu_pseudo_register_write_spu (regcache
, "srr0", buf
);
268 case SPU_LSLR_REGNUM
:
269 spu_pseudo_register_write_spu (regcache
, "lslr", buf
);
272 case SPU_DECR_REGNUM
:
273 spu_pseudo_register_write_spu (regcache
, "decr", buf
);
276 case SPU_DECR_STATUS_REGNUM
:
277 spu_pseudo_register_write_spu (regcache
, "decr_status", buf
);
281 internal_error (__FILE__
, __LINE__
, _("invalid regnum"));
285 /* Value conversion -- access scalar values at the preferred slot. */
287 static struct value
*
288 spu_value_from_register (struct type
*type
, int regnum
,
289 struct frame_info
*frame
)
291 struct value
*value
= default_value_from_register (type
, regnum
, frame
);
292 int len
= TYPE_LENGTH (type
);
294 if (regnum
< SPU_NUM_GPRS
&& len
< 16)
296 int preferred_slot
= len
< 4 ? 4 - len
: 0;
297 set_value_offset (value
, preferred_slot
);
303 /* Register groups. */
306 spu_register_reggroup_p (struct gdbarch
*gdbarch
, int regnum
,
307 struct reggroup
*group
)
309 /* Registers displayed via 'info regs'. */
310 if (group
== general_reggroup
)
313 /* Registers displayed via 'info float'. */
314 if (group
== float_reggroup
)
317 /* Registers that need to be saved/restored in order to
318 push or pop frames. */
319 if (group
== save_reggroup
|| group
== restore_reggroup
)
322 return default_register_reggroup_p (gdbarch
, regnum
, group
);
325 /* Address conversion. */
328 spu_pointer_to_address (struct type
*type
, const gdb_byte
*buf
)
330 ULONGEST addr
= extract_unsigned_integer (buf
, TYPE_LENGTH (type
));
331 ULONGEST lslr
= SPU_LS_SIZE
- 1; /* Hard-wired LS size. */
333 if (target_has_registers
&& target_has_stack
&& target_has_memory
)
334 lslr
= get_frame_register_unsigned (get_selected_frame (NULL
),
341 spu_integer_to_address (struct gdbarch
*gdbarch
,
342 struct type
*type
, const gdb_byte
*buf
)
344 ULONGEST addr
= unpack_long (type
, buf
);
345 ULONGEST lslr
= SPU_LS_SIZE
- 1; /* Hard-wired LS size. */
347 if (target_has_registers
&& target_has_stack
&& target_has_memory
)
348 lslr
= get_frame_register_unsigned (get_selected_frame (NULL
),
355 /* Decoding SPU instructions. */
392 is_rr (unsigned int insn
, int op
, int *rt
, int *ra
, int *rb
)
394 if ((insn
>> 21) == op
)
397 *ra
= (insn
>> 7) & 127;
398 *rb
= (insn
>> 14) & 127;
406 is_rrr (unsigned int insn
, int op
, int *rt
, int *ra
, int *rb
, int *rc
)
408 if ((insn
>> 28) == op
)
410 *rt
= (insn
>> 21) & 127;
411 *ra
= (insn
>> 7) & 127;
412 *rb
= (insn
>> 14) & 127;
421 is_ri7 (unsigned int insn
, int op
, int *rt
, int *ra
, int *i7
)
423 if ((insn
>> 21) == op
)
426 *ra
= (insn
>> 7) & 127;
427 *i7
= (((insn
>> 14) & 127) ^ 0x40) - 0x40;
435 is_ri10 (unsigned int insn
, int op
, int *rt
, int *ra
, int *i10
)
437 if ((insn
>> 24) == op
)
440 *ra
= (insn
>> 7) & 127;
441 *i10
= (((insn
>> 14) & 0x3ff) ^ 0x200) - 0x200;
449 is_ri16 (unsigned int insn
, int op
, int *rt
, int *i16
)
451 if ((insn
>> 23) == op
)
454 *i16
= (((insn
>> 7) & 0xffff) ^ 0x8000) - 0x8000;
462 is_ri18 (unsigned int insn
, int op
, int *rt
, int *i18
)
464 if ((insn
>> 25) == op
)
467 *i18
= (((insn
>> 7) & 0x3ffff) ^ 0x20000) - 0x20000;
475 is_branch (unsigned int insn
, int *offset
, int *reg
)
479 if (is_ri16 (insn
, op_br
, &rt
, &i16
)
480 || is_ri16 (insn
, op_brsl
, &rt
, &i16
)
481 || is_ri16 (insn
, op_brnz
, &rt
, &i16
)
482 || is_ri16 (insn
, op_brz
, &rt
, &i16
)
483 || is_ri16 (insn
, op_brhnz
, &rt
, &i16
)
484 || is_ri16 (insn
, op_brhz
, &rt
, &i16
))
486 *reg
= SPU_PC_REGNUM
;
491 if (is_ri16 (insn
, op_bra
, &rt
, &i16
)
492 || is_ri16 (insn
, op_brasl
, &rt
, &i16
))
499 if (is_ri7 (insn
, op_bi
, &rt
, reg
, &i7
)
500 || is_ri7 (insn
, op_bisl
, &rt
, reg
, &i7
)
501 || is_ri7 (insn
, op_biz
, &rt
, reg
, &i7
)
502 || is_ri7 (insn
, op_binz
, &rt
, reg
, &i7
)
503 || is_ri7 (insn
, op_bihz
, &rt
, reg
, &i7
)
504 || is_ri7 (insn
, op_bihnz
, &rt
, reg
, &i7
))
514 /* Prolog parsing. */
516 struct spu_prologue_data
518 /* Stack frame size. -1 if analysis was unsuccessful. */
521 /* How to find the CFA. The CFA is equal to SP at function entry. */
525 /* Offset relative to CFA where a register is saved. -1 if invalid. */
526 int reg_offset
[SPU_NUM_GPRS
];
530 spu_analyze_prologue (CORE_ADDR start_pc
, CORE_ADDR end_pc
,
531 struct spu_prologue_data
*data
)
536 int reg_immed
[SPU_NUM_GPRS
];
538 CORE_ADDR prolog_pc
= start_pc
;
543 /* Initialize DATA to default values. */
546 data
->cfa_reg
= SPU_RAW_SP_REGNUM
;
547 data
->cfa_offset
= 0;
549 for (i
= 0; i
< SPU_NUM_GPRS
; i
++)
550 data
->reg_offset
[i
] = -1;
552 /* Set up REG_IMMED array. This is non-zero for a register if we know its
553 preferred slot currently holds this immediate value. */
554 for (i
= 0; i
< SPU_NUM_GPRS
; i
++)
557 /* Scan instructions until the first branch.
559 The following instructions are important prolog components:
561 - The first instruction to set up the stack pointer.
562 - The first instruction to set up the frame pointer.
563 - The first instruction to save the link register.
565 We return the instruction after the latest of these three,
566 or the incoming PC if none is found. The first instruction
567 to set up the stack pointer also defines the frame size.
569 Note that instructions saving incoming arguments to their stack
570 slots are not counted as important, because they are hard to
571 identify with certainty. This should not matter much, because
572 arguments are relevant only in code compiled with debug data,
573 and in such code the GDB core will advance until the first source
574 line anyway, using SAL data.
576 For purposes of stack unwinding, we analyze the following types
577 of instructions in addition:
579 - Any instruction adding to the current frame pointer.
580 - Any instruction loading an immediate constant into a register.
581 - Any instruction storing a register onto the stack.
583 These are used to compute the CFA and REG_OFFSET output. */
585 for (pc
= start_pc
; pc
< end_pc
; pc
+= 4)
588 int rt
, ra
, rb
, rc
, immed
;
590 if (target_read_memory (pc
, buf
, 4))
592 insn
= extract_unsigned_integer (buf
, 4);
594 /* AI is the typical instruction to set up a stack frame.
595 It is also used to initialize the frame pointer. */
596 if (is_ri10 (insn
, op_ai
, &rt
, &ra
, &immed
))
598 if (rt
== data
->cfa_reg
&& ra
== data
->cfa_reg
)
599 data
->cfa_offset
-= immed
;
601 if (rt
== SPU_RAW_SP_REGNUM
&& ra
== SPU_RAW_SP_REGNUM
609 else if (rt
== SPU_FP_REGNUM
&& ra
== SPU_RAW_SP_REGNUM
615 data
->cfa_reg
= SPU_FP_REGNUM
;
616 data
->cfa_offset
-= immed
;
620 /* A is used to set up stack frames of size >= 512 bytes.
621 If we have tracked the contents of the addend register,
622 we can handle this as well. */
623 else if (is_rr (insn
, op_a
, &rt
, &ra
, &rb
))
625 if (rt
== data
->cfa_reg
&& ra
== data
->cfa_reg
)
627 if (reg_immed
[rb
] != 0)
628 data
->cfa_offset
-= reg_immed
[rb
];
630 data
->cfa_reg
= -1; /* We don't know the CFA any more. */
633 if (rt
== SPU_RAW_SP_REGNUM
&& ra
== SPU_RAW_SP_REGNUM
639 if (reg_immed
[rb
] != 0)
640 data
->size
= -reg_immed
[rb
];
644 /* We need to track IL and ILA used to load immediate constants
645 in case they are later used as input to an A instruction. */
646 else if (is_ri16 (insn
, op_il
, &rt
, &immed
))
648 reg_immed
[rt
] = immed
;
650 if (rt
== SPU_RAW_SP_REGNUM
&& !found_sp
)
654 else if (is_ri18 (insn
, op_ila
, &rt
, &immed
))
656 reg_immed
[rt
] = immed
& 0x3ffff;
658 if (rt
== SPU_RAW_SP_REGNUM
&& !found_sp
)
662 /* STQD is used to save registers to the stack. */
663 else if (is_ri10 (insn
, op_stqd
, &rt
, &ra
, &immed
))
665 if (ra
== data
->cfa_reg
)
666 data
->reg_offset
[rt
] = data
->cfa_offset
- (immed
<< 4);
668 if (ra
== data
->cfa_reg
&& rt
== SPU_LR_REGNUM
676 /* _start uses SELB to set up the stack pointer. */
677 else if (is_rrr (insn
, op_selb
, &rt
, &ra
, &rb
, &rc
))
679 if (rt
== SPU_RAW_SP_REGNUM
&& !found_sp
)
683 /* We terminate if we find a branch. */
684 else if (is_branch (insn
, &immed
, &ra
))
689 /* If we successfully parsed until here, and didn't find any instruction
690 modifying SP, we assume we have a frameless function. */
694 /* Return cooked instead of raw SP. */
695 if (data
->cfa_reg
== SPU_RAW_SP_REGNUM
)
696 data
->cfa_reg
= SPU_SP_REGNUM
;
701 /* Return the first instruction after the prologue starting at PC. */
703 spu_skip_prologue (struct gdbarch
*gdbarch
, CORE_ADDR pc
)
705 struct spu_prologue_data data
;
706 return spu_analyze_prologue (pc
, (CORE_ADDR
)-1, &data
);
709 /* Return the frame pointer in use at address PC. */
711 spu_virtual_frame_pointer (struct gdbarch
*gdbarch
, CORE_ADDR pc
,
712 int *reg
, LONGEST
*offset
)
714 struct spu_prologue_data data
;
715 spu_analyze_prologue (pc
, (CORE_ADDR
)-1, &data
);
717 if (data
.size
!= -1 && data
.cfa_reg
!= -1)
719 /* The 'frame pointer' address is CFA minus frame size. */
721 *offset
= data
.cfa_offset
- data
.size
;
725 /* ??? We don't really know ... */
726 *reg
= SPU_SP_REGNUM
;
731 /* Return true if we are in the function's epilogue, i.e. after the
732 instruction that destroyed the function's stack frame.
734 1) scan forward from the point of execution:
735 a) If you find an instruction that modifies the stack pointer
736 or transfers control (except a return), execution is not in
738 b) Stop scanning if you find a return instruction or reach the
739 end of the function or reach the hard limit for the size of
741 2) scan backward from the point of execution:
742 a) If you find an instruction that modifies the stack pointer,
743 execution *is* in an epilogue, return.
744 b) Stop scanning if you reach an instruction that transfers
745 control or the beginning of the function or reach the hard
746 limit for the size of an epilogue. */
749 spu_in_function_epilogue_p (struct gdbarch
*gdbarch
, CORE_ADDR pc
)
751 CORE_ADDR scan_pc
, func_start
, func_end
, epilogue_start
, epilogue_end
;
754 int rt
, ra
, rb
, rc
, immed
;
756 /* Find the search limits based on function boundaries and hard limit.
757 We assume the epilogue can be up to 64 instructions long. */
759 const int spu_max_epilogue_size
= 64 * 4;
761 if (!find_pc_partial_function (pc
, NULL
, &func_start
, &func_end
))
764 if (pc
- func_start
< spu_max_epilogue_size
)
765 epilogue_start
= func_start
;
767 epilogue_start
= pc
- spu_max_epilogue_size
;
769 if (func_end
- pc
< spu_max_epilogue_size
)
770 epilogue_end
= func_end
;
772 epilogue_end
= pc
+ spu_max_epilogue_size
;
774 /* Scan forward until next 'bi $0'. */
776 for (scan_pc
= pc
; scan_pc
< epilogue_end
; scan_pc
+= 4)
778 if (target_read_memory (scan_pc
, buf
, 4))
780 insn
= extract_unsigned_integer (buf
, 4);
782 if (is_branch (insn
, &immed
, &ra
))
784 if (immed
== 0 && ra
== SPU_LR_REGNUM
)
790 if (is_ri10 (insn
, op_ai
, &rt
, &ra
, &immed
)
791 || is_rr (insn
, op_a
, &rt
, &ra
, &rb
)
792 || is_ri10 (insn
, op_lqd
, &rt
, &ra
, &immed
))
794 if (rt
== SPU_RAW_SP_REGNUM
)
799 if (scan_pc
>= epilogue_end
)
802 /* Scan backward until adjustment to stack pointer (R1). */
804 for (scan_pc
= pc
- 4; scan_pc
>= epilogue_start
; scan_pc
-= 4)
806 if (target_read_memory (scan_pc
, buf
, 4))
808 insn
= extract_unsigned_integer (buf
, 4);
810 if (is_branch (insn
, &immed
, &ra
))
813 if (is_ri10 (insn
, op_ai
, &rt
, &ra
, &immed
)
814 || is_rr (insn
, op_a
, &rt
, &ra
, &rb
)
815 || is_ri10 (insn
, op_lqd
, &rt
, &ra
, &immed
))
817 if (rt
== SPU_RAW_SP_REGNUM
)
826 /* Normal stack frames. */
828 struct spu_unwind_cache
831 CORE_ADDR frame_base
;
832 CORE_ADDR local_base
;
834 struct trad_frame_saved_reg
*saved_regs
;
837 static struct spu_unwind_cache
*
838 spu_frame_unwind_cache (struct frame_info
*this_frame
,
839 void **this_prologue_cache
)
841 struct spu_unwind_cache
*info
;
842 struct spu_prologue_data data
;
845 if (*this_prologue_cache
)
846 return *this_prologue_cache
;
848 info
= FRAME_OBSTACK_ZALLOC (struct spu_unwind_cache
);
849 *this_prologue_cache
= info
;
850 info
->saved_regs
= trad_frame_alloc_saved_regs (this_frame
);
851 info
->frame_base
= 0;
852 info
->local_base
= 0;
854 /* Find the start of the current function, and analyze its prologue. */
855 info
->func
= get_frame_func (this_frame
);
858 /* Fall back to using the current PC as frame ID. */
859 info
->func
= get_frame_pc (this_frame
);
863 spu_analyze_prologue (info
->func
, get_frame_pc (this_frame
), &data
);
866 /* If successful, use prologue analysis data. */
867 if (data
.size
!= -1 && data
.cfa_reg
!= -1)
872 /* Determine CFA via unwound CFA_REG plus CFA_OFFSET. */
873 get_frame_register (this_frame
, data
.cfa_reg
, buf
);
874 cfa
= extract_unsigned_integer (buf
, 4) + data
.cfa_offset
;
876 /* Call-saved register slots. */
877 for (i
= 0; i
< SPU_NUM_GPRS
; i
++)
878 if (i
== SPU_LR_REGNUM
879 || (i
>= SPU_SAVED1_REGNUM
&& i
<= SPU_SAVEDN_REGNUM
))
880 if (data
.reg_offset
[i
] != -1)
881 info
->saved_regs
[i
].addr
= cfa
- data
.reg_offset
[i
];
884 info
->frame_base
= cfa
;
885 info
->local_base
= cfa
- data
.size
;
888 /* Otherwise, fall back to reading the backchain link. */
895 /* Get the backchain. */
896 reg
= get_frame_register_unsigned (this_frame
, SPU_SP_REGNUM
);
897 status
= safe_read_memory_integer (reg
, 4, &backchain
);
899 /* A zero backchain terminates the frame chain. Also, sanity
900 check against the local store size limit. */
901 if (status
&& backchain
> 0 && backchain
< SPU_LS_SIZE
)
903 /* Assume the link register is saved into its slot. */
904 if (backchain
+ 16 < SPU_LS_SIZE
)
905 info
->saved_regs
[SPU_LR_REGNUM
].addr
= backchain
+ 16;
908 info
->frame_base
= backchain
;
909 info
->local_base
= reg
;
913 /* The previous SP is equal to the CFA. */
914 trad_frame_set_value (info
->saved_regs
, SPU_SP_REGNUM
, info
->frame_base
);
916 /* Read full contents of the unwound link register in order to
917 be able to determine the return address. */
918 if (trad_frame_addr_p (info
->saved_regs
, SPU_LR_REGNUM
))
919 target_read_memory (info
->saved_regs
[SPU_LR_REGNUM
].addr
, buf
, 16);
921 get_frame_register (this_frame
, SPU_LR_REGNUM
, buf
);
923 /* Normally, the return address is contained in the slot 0 of the
924 link register, and slots 1-3 are zero. For an overlay return,
925 slot 0 contains the address of the overlay manager return stub,
926 slot 1 contains the partition number of the overlay section to
927 be returned to, and slot 2 contains the return address within
928 that section. Return the latter address in that case. */
929 if (extract_unsigned_integer (buf
+ 8, 4) != 0)
930 trad_frame_set_value (info
->saved_regs
, SPU_PC_REGNUM
,
931 extract_unsigned_integer (buf
+ 8, 4));
933 trad_frame_set_value (info
->saved_regs
, SPU_PC_REGNUM
,
934 extract_unsigned_integer (buf
, 4));
940 spu_frame_this_id (struct frame_info
*this_frame
,
941 void **this_prologue_cache
, struct frame_id
*this_id
)
943 struct spu_unwind_cache
*info
=
944 spu_frame_unwind_cache (this_frame
, this_prologue_cache
);
946 if (info
->frame_base
== 0)
949 *this_id
= frame_id_build (info
->frame_base
, info
->func
);
952 static struct value
*
953 spu_frame_prev_register (struct frame_info
*this_frame
,
954 void **this_prologue_cache
, int regnum
)
956 struct spu_unwind_cache
*info
957 = spu_frame_unwind_cache (this_frame
, this_prologue_cache
);
959 /* Special-case the stack pointer. */
960 if (regnum
== SPU_RAW_SP_REGNUM
)
961 regnum
= SPU_SP_REGNUM
;
963 return trad_frame_get_prev_register (this_frame
, info
->saved_regs
, regnum
);
966 static const struct frame_unwind spu_frame_unwind
= {
969 spu_frame_prev_register
,
971 default_frame_sniffer
975 spu_frame_base_address (struct frame_info
*this_frame
, void **this_cache
)
977 struct spu_unwind_cache
*info
978 = spu_frame_unwind_cache (this_frame
, this_cache
);
979 return info
->local_base
;
982 static const struct frame_base spu_frame_base
= {
984 spu_frame_base_address
,
985 spu_frame_base_address
,
986 spu_frame_base_address
990 spu_unwind_pc (struct gdbarch
*gdbarch
, struct frame_info
*next_frame
)
992 CORE_ADDR pc
= frame_unwind_register_unsigned (next_frame
, SPU_PC_REGNUM
);
993 /* Mask off interrupt enable bit. */
998 spu_unwind_sp (struct gdbarch
*gdbarch
, struct frame_info
*next_frame
)
1000 return frame_unwind_register_unsigned (next_frame
, SPU_SP_REGNUM
);
1004 spu_read_pc (struct regcache
*regcache
)
1007 regcache_cooked_read_unsigned (regcache
, SPU_PC_REGNUM
, &pc
);
1008 /* Mask off interrupt enable bit. */
1013 spu_write_pc (struct regcache
*regcache
, CORE_ADDR pc
)
1015 /* Keep interrupt enabled state unchanged. */
1017 regcache_cooked_read_unsigned (regcache
, SPU_PC_REGNUM
, &old_pc
);
1018 regcache_cooked_write_unsigned (regcache
, SPU_PC_REGNUM
,
1019 (pc
& -4) | (old_pc
& 3));
1023 /* Function calling convention. */
1026 spu_frame_align (struct gdbarch
*gdbarch
, CORE_ADDR sp
)
1032 spu_scalar_value_p (struct type
*type
)
1034 switch (TYPE_CODE (type
))
1037 case TYPE_CODE_ENUM
:
1038 case TYPE_CODE_RANGE
:
1039 case TYPE_CODE_CHAR
:
1040 case TYPE_CODE_BOOL
:
1043 return TYPE_LENGTH (type
) <= 16;
1051 spu_value_to_regcache (struct regcache
*regcache
, int regnum
,
1052 struct type
*type
, const gdb_byte
*in
)
1054 int len
= TYPE_LENGTH (type
);
1056 if (spu_scalar_value_p (type
))
1058 int preferred_slot
= len
< 4 ? 4 - len
: 0;
1059 regcache_cooked_write_part (regcache
, regnum
, preferred_slot
, len
, in
);
1065 regcache_cooked_write (regcache
, regnum
++, in
);
1071 regcache_cooked_write_part (regcache
, regnum
, 0, len
, in
);
1076 spu_regcache_to_value (struct regcache
*regcache
, int regnum
,
1077 struct type
*type
, gdb_byte
*out
)
1079 int len
= TYPE_LENGTH (type
);
1081 if (spu_scalar_value_p (type
))
1083 int preferred_slot
= len
< 4 ? 4 - len
: 0;
1084 regcache_cooked_read_part (regcache
, regnum
, preferred_slot
, len
, out
);
1090 regcache_cooked_read (regcache
, regnum
++, out
);
1096 regcache_cooked_read_part (regcache
, regnum
, 0, len
, out
);
1101 spu_push_dummy_call (struct gdbarch
*gdbarch
, struct value
*function
,
1102 struct regcache
*regcache
, CORE_ADDR bp_addr
,
1103 int nargs
, struct value
**args
, CORE_ADDR sp
,
1104 int struct_return
, CORE_ADDR struct_addr
)
1107 int regnum
= SPU_ARG1_REGNUM
;
1111 /* Set the return address. */
1112 memset (buf
, 0, sizeof buf
);
1113 store_unsigned_integer (buf
, 4, bp_addr
);
1114 regcache_cooked_write (regcache
, SPU_LR_REGNUM
, buf
);
1116 /* If STRUCT_RETURN is true, then the struct return address (in
1117 STRUCT_ADDR) will consume the first argument-passing register.
1118 Both adjust the register count and store that value. */
1121 memset (buf
, 0, sizeof buf
);
1122 store_unsigned_integer (buf
, 4, struct_addr
);
1123 regcache_cooked_write (regcache
, regnum
++, buf
);
1126 /* Fill in argument registers. */
1127 for (i
= 0; i
< nargs
; i
++)
1129 struct value
*arg
= args
[i
];
1130 struct type
*type
= check_typedef (value_type (arg
));
1131 const gdb_byte
*contents
= value_contents (arg
);
1132 int len
= TYPE_LENGTH (type
);
1133 int n_regs
= align_up (len
, 16) / 16;
1135 /* If the argument doesn't wholly fit into registers, it and
1136 all subsequent arguments go to the stack. */
1137 if (regnum
+ n_regs
- 1 > SPU_ARGN_REGNUM
)
1143 spu_value_to_regcache (regcache
, regnum
, type
, contents
);
1147 /* Overflow arguments go to the stack. */
1148 if (stack_arg
!= -1)
1152 /* Allocate all required stack size. */
1153 for (i
= stack_arg
; i
< nargs
; i
++)
1155 struct type
*type
= check_typedef (value_type (args
[i
]));
1156 sp
-= align_up (TYPE_LENGTH (type
), 16);
1159 /* Fill in stack arguments. */
1161 for (i
= stack_arg
; i
< nargs
; i
++)
1163 struct value
*arg
= args
[i
];
1164 struct type
*type
= check_typedef (value_type (arg
));
1165 int len
= TYPE_LENGTH (type
);
1168 if (spu_scalar_value_p (type
))
1169 preferred_slot
= len
< 4 ? 4 - len
: 0;
1173 target_write_memory (ap
+ preferred_slot
, value_contents (arg
), len
);
1174 ap
+= align_up (TYPE_LENGTH (type
), 16);
1178 /* Allocate stack frame header. */
1181 /* Store stack back chain. */
1182 regcache_cooked_read (regcache
, SPU_RAW_SP_REGNUM
, buf
);
1183 target_write_memory (sp
, buf
, 16);
1185 /* Finally, update the SP register. */
1186 regcache_cooked_write_unsigned (regcache
, SPU_SP_REGNUM
, sp
);
1191 static struct frame_id
1192 spu_dummy_id (struct gdbarch
*gdbarch
, struct frame_info
*this_frame
)
1194 CORE_ADDR pc
= get_frame_register_unsigned (this_frame
, SPU_PC_REGNUM
);
1195 CORE_ADDR sp
= get_frame_register_unsigned (this_frame
, SPU_SP_REGNUM
);
1196 return frame_id_build (sp
, pc
& -4);
1199 /* Function return value access. */
1201 static enum return_value_convention
1202 spu_return_value (struct gdbarch
*gdbarch
, struct type
*func_type
,
1203 struct type
*type
, struct regcache
*regcache
,
1204 gdb_byte
*out
, const gdb_byte
*in
)
1206 enum return_value_convention rvc
;
1208 if (TYPE_LENGTH (type
) <= (SPU_ARGN_REGNUM
- SPU_ARG1_REGNUM
+ 1) * 16)
1209 rvc
= RETURN_VALUE_REGISTER_CONVENTION
;
1211 rvc
= RETURN_VALUE_STRUCT_CONVENTION
;
1217 case RETURN_VALUE_REGISTER_CONVENTION
:
1218 spu_value_to_regcache (regcache
, SPU_ARG1_REGNUM
, type
, in
);
1221 case RETURN_VALUE_STRUCT_CONVENTION
:
1222 error ("Cannot set function return value.");
1230 case RETURN_VALUE_REGISTER_CONVENTION
:
1231 spu_regcache_to_value (regcache
, SPU_ARG1_REGNUM
, type
, out
);
1234 case RETURN_VALUE_STRUCT_CONVENTION
:
1235 error ("Function return value unknown.");
1246 static const gdb_byte
*
1247 spu_breakpoint_from_pc (struct gdbarch
*gdbarch
, CORE_ADDR
* pcptr
, int *lenptr
)
1249 static const gdb_byte breakpoint
[] = { 0x00, 0x00, 0x3f, 0xff };
1251 *lenptr
= sizeof breakpoint
;
1256 /* Software single-stepping support. */
1259 spu_software_single_step (struct frame_info
*frame
)
1261 CORE_ADDR pc
, next_pc
;
1266 pc
= get_frame_pc (frame
);
1268 if (target_read_memory (pc
, buf
, 4))
1270 insn
= extract_unsigned_integer (buf
, 4);
1272 /* Next sequential instruction is at PC + 4, except if the current
1273 instruction is a PPE-assisted call, in which case it is at PC + 8.
1274 Wrap around LS limit to be on the safe side. */
1275 if ((insn
& 0xffffff00) == 0x00002100)
1276 next_pc
= (pc
+ 8) & (SPU_LS_SIZE
- 1);
1278 next_pc
= (pc
+ 4) & (SPU_LS_SIZE
- 1);
1280 insert_single_step_breakpoint (next_pc
);
1282 if (is_branch (insn
, &offset
, ®
))
1284 CORE_ADDR target
= offset
;
1286 if (reg
== SPU_PC_REGNUM
)
1290 get_frame_register_bytes (frame
, reg
, 0, 4, buf
);
1291 target
+= extract_unsigned_integer (buf
, 4) & -4;
1294 target
= target
& (SPU_LS_SIZE
- 1);
1295 if (target
!= next_pc
)
1296 insert_single_step_breakpoint (target
);
1302 /* Target overlays for the SPU overlay manager.
1304 See the documentation of simple_overlay_update for how the
1305 interface is supposed to work.
1307 Data structures used by the overlay manager:
1315 } _ovly_table[]; -- one entry per overlay section
1317 struct ovly_buf_table
1320 } _ovly_buf_table[]; -- one entry per overlay buffer
1322 _ovly_table should never change.
1324 Both tables are aligned to a 16-byte boundary, the symbols _ovly_table
1325 and _ovly_buf_table are of type STT_OBJECT and their size set to the size
1326 of the respective array. buf in _ovly_table is an index into _ovly_buf_table.
1328 mapped is an index into _ovly_table. Both the mapped and buf indices start
1329 from one to reference the first entry in their respective tables. */
1331 /* Using the per-objfile private data mechanism, we store for each
1332 objfile an array of "struct spu_overlay_table" structures, one
1333 for each obj_section of the objfile. This structure holds two
1334 fields, MAPPED_PTR and MAPPED_VAL. If MAPPED_PTR is zero, this
1335 is *not* an overlay section. If it is non-zero, it represents
1336 a target address. The overlay section is mapped iff the target
1337 integer at this location equals MAPPED_VAL. */
1339 static const struct objfile_data
*spu_overlay_data
;
1341 struct spu_overlay_table
1343 CORE_ADDR mapped_ptr
;
1344 CORE_ADDR mapped_val
;
1347 /* Retrieve the overlay table for OBJFILE. If not already cached, read
1348 the _ovly_table data structure from the target and initialize the
1349 spu_overlay_table data structure from it. */
1350 static struct spu_overlay_table
*
1351 spu_get_overlay_table (struct objfile
*objfile
)
1353 struct minimal_symbol
*ovly_table_msym
, *ovly_buf_table_msym
;
1354 CORE_ADDR ovly_table_base
, ovly_buf_table_base
;
1355 unsigned ovly_table_size
, ovly_buf_table_size
;
1356 struct spu_overlay_table
*tbl
;
1357 struct obj_section
*osect
;
1361 tbl
= objfile_data (objfile
, spu_overlay_data
);
1365 ovly_table_msym
= lookup_minimal_symbol ("_ovly_table", NULL
, objfile
);
1366 if (!ovly_table_msym
)
1369 ovly_buf_table_msym
= lookup_minimal_symbol ("_ovly_buf_table", NULL
, objfile
);
1370 if (!ovly_buf_table_msym
)
1373 ovly_table_base
= SYMBOL_VALUE_ADDRESS (ovly_table_msym
);
1374 ovly_table_size
= MSYMBOL_SIZE (ovly_table_msym
);
1376 ovly_buf_table_base
= SYMBOL_VALUE_ADDRESS (ovly_buf_table_msym
);
1377 ovly_buf_table_size
= MSYMBOL_SIZE (ovly_buf_table_msym
);
1379 ovly_table
= xmalloc (ovly_table_size
);
1380 read_memory (ovly_table_base
, ovly_table
, ovly_table_size
);
1382 tbl
= OBSTACK_CALLOC (&objfile
->objfile_obstack
,
1383 objfile
->sections_end
- objfile
->sections
,
1384 struct spu_overlay_table
);
1386 for (i
= 0; i
< ovly_table_size
/ 16; i
++)
1388 CORE_ADDR vma
= extract_unsigned_integer (ovly_table
+ 16*i
+ 0, 4);
1389 CORE_ADDR size
= extract_unsigned_integer (ovly_table
+ 16*i
+ 4, 4);
1390 CORE_ADDR pos
= extract_unsigned_integer (ovly_table
+ 16*i
+ 8, 4);
1391 CORE_ADDR buf
= extract_unsigned_integer (ovly_table
+ 16*i
+ 12, 4);
1393 if (buf
== 0 || (buf
- 1) * 4 >= ovly_buf_table_size
)
1396 ALL_OBJFILE_OSECTIONS (objfile
, osect
)
1397 if (vma
== bfd_section_vma (objfile
->obfd
, osect
->the_bfd_section
)
1398 && pos
== osect
->the_bfd_section
->filepos
)
1400 int ndx
= osect
- objfile
->sections
;
1401 tbl
[ndx
].mapped_ptr
= ovly_buf_table_base
+ (buf
- 1) * 4;
1402 tbl
[ndx
].mapped_val
= i
+ 1;
1408 set_objfile_data (objfile
, spu_overlay_data
, tbl
);
1412 /* Read _ovly_buf_table entry from the target to dermine whether
1413 OSECT is currently mapped, and update the mapped state. */
1415 spu_overlay_update_osect (struct obj_section
*osect
)
1417 struct spu_overlay_table
*ovly_table
;
1420 ovly_table
= spu_get_overlay_table (osect
->objfile
);
1424 ovly_table
+= osect
- osect
->objfile
->sections
;
1425 if (ovly_table
->mapped_ptr
== 0)
1428 val
= read_memory_unsigned_integer (ovly_table
->mapped_ptr
, 4);
1429 osect
->ovly_mapped
= (val
== ovly_table
->mapped_val
);
1432 /* If OSECT is NULL, then update all sections' mapped state.
1433 If OSECT is non-NULL, then update only OSECT's mapped state. */
1435 spu_overlay_update (struct obj_section
*osect
)
1437 /* Just one section. */
1439 spu_overlay_update_osect (osect
);
1444 struct objfile
*objfile
;
1446 ALL_OBJSECTIONS (objfile
, osect
)
1447 if (section_is_overlay (osect
->the_bfd_section
))
1448 spu_overlay_update_osect (osect
);
1452 /* Whenever a new objfile is loaded, read the target's _ovly_table.
1453 If there is one, go through all sections and make sure for non-
1454 overlay sections LMA equals VMA, while for overlay sections LMA
1455 is larger than local store size. */
1457 spu_overlay_new_objfile (struct objfile
*objfile
)
1459 struct spu_overlay_table
*ovly_table
;
1460 struct obj_section
*osect
;
1462 /* If we've already touched this file, do nothing. */
1463 if (!objfile
|| objfile_data (objfile
, spu_overlay_data
) != NULL
)
1466 /* Check if this objfile has overlays. */
1467 ovly_table
= spu_get_overlay_table (objfile
);
1471 /* Now go and fiddle with all the LMAs. */
1472 ALL_OBJFILE_OSECTIONS (objfile
, osect
)
1474 bfd
*obfd
= objfile
->obfd
;
1475 asection
*bsect
= osect
->the_bfd_section
;
1476 int ndx
= osect
- objfile
->sections
;
1478 if (ovly_table
[ndx
].mapped_ptr
== 0)
1479 bfd_section_lma (obfd
, bsect
) = bfd_section_vma (obfd
, bsect
);
1481 bfd_section_lma (obfd
, bsect
) = bsect
->filepos
+ SPU_LS_SIZE
;
1486 /* "info spu" commands. */
1489 info_spu_event_command (char *args
, int from_tty
)
1491 struct frame_info
*frame
= get_selected_frame (NULL
);
1492 ULONGEST event_status
= 0;
1493 ULONGEST event_mask
= 0;
1494 struct cleanup
*chain
;
1500 id
= get_frame_register_unsigned (frame
, SPU_ID_REGNUM
);
1502 xsnprintf (annex
, sizeof annex
, "%d/event_status", id
);
1503 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1504 buf
, 0, (sizeof (buf
) - 1));
1506 error (_("Could not read event_status."));
1508 event_status
= strtoulst (buf
, NULL
, 16);
1510 xsnprintf (annex
, sizeof annex
, "%d/event_mask", id
);
1511 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1512 buf
, 0, (sizeof (buf
) - 1));
1514 error (_("Could not read event_mask."));
1516 event_mask
= strtoulst (buf
, NULL
, 16);
1518 chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "SPUInfoEvent");
1520 if (ui_out_is_mi_like_p (uiout
))
1522 ui_out_field_fmt (uiout
, "event_status",
1523 "0x%s", phex_nz (event_status
, 4));
1524 ui_out_field_fmt (uiout
, "event_mask",
1525 "0x%s", phex_nz (event_mask
, 4));
1529 printf_filtered (_("Event Status 0x%s\n"), phex (event_status
, 4));
1530 printf_filtered (_("Event Mask 0x%s\n"), phex (event_mask
, 4));
1533 do_cleanups (chain
);
1537 info_spu_signal_command (char *args
, int from_tty
)
1539 struct frame_info
*frame
= get_selected_frame (NULL
);
1540 ULONGEST signal1
= 0;
1541 ULONGEST signal1_type
= 0;
1542 int signal1_pending
= 0;
1543 ULONGEST signal2
= 0;
1544 ULONGEST signal2_type
= 0;
1545 int signal2_pending
= 0;
1546 struct cleanup
*chain
;
1552 id
= get_frame_register_unsigned (frame
, SPU_ID_REGNUM
);
1554 xsnprintf (annex
, sizeof annex
, "%d/signal1", id
);
1555 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
, buf
, 0, 4);
1557 error (_("Could not read signal1."));
1560 signal1
= extract_unsigned_integer (buf
, 4);
1561 signal1_pending
= 1;
1564 xsnprintf (annex
, sizeof annex
, "%d/signal1_type", id
);
1565 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1566 buf
, 0, (sizeof (buf
) - 1));
1568 error (_("Could not read signal1_type."));
1570 signal1_type
= strtoulst (buf
, NULL
, 16);
1572 xsnprintf (annex
, sizeof annex
, "%d/signal2", id
);
1573 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
, buf
, 0, 4);
1575 error (_("Could not read signal2."));
1578 signal2
= extract_unsigned_integer (buf
, 4);
1579 signal2_pending
= 1;
1582 xsnprintf (annex
, sizeof annex
, "%d/signal2_type", id
);
1583 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1584 buf
, 0, (sizeof (buf
) - 1));
1586 error (_("Could not read signal2_type."));
1588 signal2_type
= strtoulst (buf
, NULL
, 16);
1590 chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "SPUInfoSignal");
1592 if (ui_out_is_mi_like_p (uiout
))
1594 ui_out_field_int (uiout
, "signal1_pending", signal1_pending
);
1595 ui_out_field_fmt (uiout
, "signal1", "0x%s", phex_nz (signal1
, 4));
1596 ui_out_field_int (uiout
, "signal1_type", signal1_type
);
1597 ui_out_field_int (uiout
, "signal2_pending", signal2_pending
);
1598 ui_out_field_fmt (uiout
, "signal2", "0x%s", phex_nz (signal2
, 4));
1599 ui_out_field_int (uiout
, "signal2_type", signal2_type
);
1603 if (signal1_pending
)
1604 printf_filtered (_("Signal 1 control word 0x%s "), phex (signal1
, 4));
1606 printf_filtered (_("Signal 1 not pending "));
1609 printf_filtered (_("(Type Or)\n"));
1611 printf_filtered (_("(Type Overwrite)\n"));
1613 if (signal2_pending
)
1614 printf_filtered (_("Signal 2 control word 0x%s "), phex (signal2
, 4));
1616 printf_filtered (_("Signal 2 not pending "));
1619 printf_filtered (_("(Type Or)\n"));
1621 printf_filtered (_("(Type Overwrite)\n"));
1624 do_cleanups (chain
);
1628 info_spu_mailbox_list (gdb_byte
*buf
, int nr
,
1629 const char *field
, const char *msg
)
1631 struct cleanup
*chain
;
1637 chain
= make_cleanup_ui_out_table_begin_end (uiout
, 1, nr
, "mbox");
1639 ui_out_table_header (uiout
, 32, ui_left
, field
, msg
);
1640 ui_out_table_body (uiout
);
1642 for (i
= 0; i
< nr
; i
++)
1644 struct cleanup
*val_chain
;
1646 val_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "mbox");
1647 val
= extract_unsigned_integer (buf
+ 4*i
, 4);
1648 ui_out_field_fmt (uiout
, field
, "0x%s", phex (val
, 4));
1649 do_cleanups (val_chain
);
1651 if (!ui_out_is_mi_like_p (uiout
))
1652 printf_filtered ("\n");
1655 do_cleanups (chain
);
1659 info_spu_mailbox_command (char *args
, int from_tty
)
1661 struct frame_info
*frame
= get_selected_frame (NULL
);
1662 struct cleanup
*chain
;
1668 id
= get_frame_register_unsigned (frame
, SPU_ID_REGNUM
);
1670 chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "SPUInfoMailbox");
1672 xsnprintf (annex
, sizeof annex
, "%d/mbox_info", id
);
1673 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1674 buf
, 0, sizeof buf
);
1676 error (_("Could not read mbox_info."));
1678 info_spu_mailbox_list (buf
, len
/ 4, "mbox", "SPU Outbound Mailbox");
1680 xsnprintf (annex
, sizeof annex
, "%d/ibox_info", id
);
1681 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1682 buf
, 0, sizeof buf
);
1684 error (_("Could not read ibox_info."));
1686 info_spu_mailbox_list (buf
, len
/ 4, "ibox", "SPU Outbound Interrupt Mailbox");
1688 xsnprintf (annex
, sizeof annex
, "%d/wbox_info", id
);
1689 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1690 buf
, 0, sizeof buf
);
1692 error (_("Could not read wbox_info."));
1694 info_spu_mailbox_list (buf
, len
/ 4, "wbox", "SPU Inbound Mailbox");
1696 do_cleanups (chain
);
1700 spu_mfc_get_bitfield (ULONGEST word
, int first
, int last
)
1702 ULONGEST mask
= ~(~(ULONGEST
)0 << (last
- first
+ 1));
1703 return (word
>> (63 - last
)) & mask
;
1707 info_spu_dma_cmdlist (gdb_byte
*buf
, int nr
)
1709 static char *spu_mfc_opcode
[256] =
1711 /* 00 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1712 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1713 /* 10 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1714 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1715 /* 20 */ "put", "putb", "putf", NULL
, "putl", "putlb", "putlf", NULL
,
1716 "puts", "putbs", "putfs", NULL
, NULL
, NULL
, NULL
, NULL
,
1717 /* 30 */ "putr", "putrb", "putrf", NULL
, "putrl", "putrlb", "putrlf", NULL
,
1718 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1719 /* 40 */ "get", "getb", "getf", NULL
, "getl", "getlb", "getlf", NULL
,
1720 "gets", "getbs", "getfs", NULL
, NULL
, NULL
, NULL
, NULL
,
1721 /* 50 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1722 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1723 /* 60 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1724 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1725 /* 70 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1726 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1727 /* 80 */ "sdcrt", "sdcrtst", NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1728 NULL
, "sdcrz", NULL
, NULL
, NULL
, "sdcrst", NULL
, "sdcrf",
1729 /* 90 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1730 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1731 /* a0 */ "sndsig", "sndsigb", "sndsigf", NULL
, NULL
, NULL
, NULL
, NULL
,
1732 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1733 /* b0 */ "putlluc", NULL
, NULL
, NULL
, "putllc", NULL
, NULL
, NULL
,
1734 "putqlluc", NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1735 /* c0 */ "barrier", NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1736 "mfceieio", NULL
, NULL
, NULL
, "mfcsync", NULL
, NULL
, NULL
,
1737 /* d0 */ "getllar", NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1738 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1739 /* e0 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1740 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1741 /* f0 */ NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1742 NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
, NULL
,
1745 struct cleanup
*chain
;
1748 chain
= make_cleanup_ui_out_table_begin_end (uiout
, 10, nr
, "dma_cmd");
1750 ui_out_table_header (uiout
, 7, ui_left
, "opcode", "Opcode");
1751 ui_out_table_header (uiout
, 3, ui_left
, "tag", "Tag");
1752 ui_out_table_header (uiout
, 3, ui_left
, "tid", "TId");
1753 ui_out_table_header (uiout
, 3, ui_left
, "rid", "RId");
1754 ui_out_table_header (uiout
, 18, ui_left
, "ea", "EA");
1755 ui_out_table_header (uiout
, 7, ui_left
, "lsa", "LSA");
1756 ui_out_table_header (uiout
, 7, ui_left
, "size", "Size");
1757 ui_out_table_header (uiout
, 7, ui_left
, "lstaddr", "LstAddr");
1758 ui_out_table_header (uiout
, 7, ui_left
, "lstsize", "LstSize");
1759 ui_out_table_header (uiout
, 1, ui_left
, "error_p", "E");
1761 ui_out_table_body (uiout
);
1763 for (i
= 0; i
< nr
; i
++)
1765 struct cleanup
*cmd_chain
;
1766 ULONGEST mfc_cq_dw0
;
1767 ULONGEST mfc_cq_dw1
;
1768 ULONGEST mfc_cq_dw2
;
1769 ULONGEST mfc_cq_dw3
;
1770 int mfc_cmd_opcode
, mfc_cmd_tag
, rclass_id
, tclass_id
;
1771 int lsa
, size
, list_lsa
, list_size
, mfc_lsa
, mfc_size
;
1773 int list_valid_p
, noop_valid_p
, qw_valid_p
, ea_valid_p
, cmd_error_p
;
1775 /* Decode contents of MFC Command Queue Context Save/Restore Registers.
1776 See "Cell Broadband Engine Registers V1.3", section 3.3.2.1. */
1778 mfc_cq_dw0
= extract_unsigned_integer (buf
+ 32*i
, 8);
1779 mfc_cq_dw1
= extract_unsigned_integer (buf
+ 32*i
+ 8, 8);
1780 mfc_cq_dw2
= extract_unsigned_integer (buf
+ 32*i
+ 16, 8);
1781 mfc_cq_dw3
= extract_unsigned_integer (buf
+ 32*i
+ 24, 8);
1783 list_lsa
= spu_mfc_get_bitfield (mfc_cq_dw0
, 0, 14);
1784 list_size
= spu_mfc_get_bitfield (mfc_cq_dw0
, 15, 26);
1785 mfc_cmd_opcode
= spu_mfc_get_bitfield (mfc_cq_dw0
, 27, 34);
1786 mfc_cmd_tag
= spu_mfc_get_bitfield (mfc_cq_dw0
, 35, 39);
1787 list_valid_p
= spu_mfc_get_bitfield (mfc_cq_dw0
, 40, 40);
1788 rclass_id
= spu_mfc_get_bitfield (mfc_cq_dw0
, 41, 43);
1789 tclass_id
= spu_mfc_get_bitfield (mfc_cq_dw0
, 44, 46);
1791 mfc_ea
= spu_mfc_get_bitfield (mfc_cq_dw1
, 0, 51) << 12
1792 | spu_mfc_get_bitfield (mfc_cq_dw2
, 25, 36);
1794 mfc_lsa
= spu_mfc_get_bitfield (mfc_cq_dw2
, 0, 13);
1795 mfc_size
= spu_mfc_get_bitfield (mfc_cq_dw2
, 14, 24);
1796 noop_valid_p
= spu_mfc_get_bitfield (mfc_cq_dw2
, 37, 37);
1797 qw_valid_p
= spu_mfc_get_bitfield (mfc_cq_dw2
, 38, 38);
1798 ea_valid_p
= spu_mfc_get_bitfield (mfc_cq_dw2
, 39, 39);
1799 cmd_error_p
= spu_mfc_get_bitfield (mfc_cq_dw2
, 40, 40);
1801 cmd_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "cmd");
1803 if (spu_mfc_opcode
[mfc_cmd_opcode
])
1804 ui_out_field_string (uiout
, "opcode", spu_mfc_opcode
[mfc_cmd_opcode
]);
1806 ui_out_field_int (uiout
, "opcode", mfc_cmd_opcode
);
1808 ui_out_field_int (uiout
, "tag", mfc_cmd_tag
);
1809 ui_out_field_int (uiout
, "tid", tclass_id
);
1810 ui_out_field_int (uiout
, "rid", rclass_id
);
1813 ui_out_field_fmt (uiout
, "ea", "0x%s", phex (mfc_ea
, 8));
1815 ui_out_field_skip (uiout
, "ea");
1817 ui_out_field_fmt (uiout
, "lsa", "0x%05x", mfc_lsa
<< 4);
1819 ui_out_field_fmt (uiout
, "size", "0x%05x", mfc_size
<< 4);
1821 ui_out_field_fmt (uiout
, "size", "0x%05x", mfc_size
);
1825 ui_out_field_fmt (uiout
, "lstaddr", "0x%05x", list_lsa
<< 3);
1826 ui_out_field_fmt (uiout
, "lstsize", "0x%05x", list_size
<< 3);
1830 ui_out_field_skip (uiout
, "lstaddr");
1831 ui_out_field_skip (uiout
, "lstsize");
1835 ui_out_field_string (uiout
, "error_p", "*");
1837 ui_out_field_skip (uiout
, "error_p");
1839 do_cleanups (cmd_chain
);
1841 if (!ui_out_is_mi_like_p (uiout
))
1842 printf_filtered ("\n");
1845 do_cleanups (chain
);
1849 info_spu_dma_command (char *args
, int from_tty
)
1851 struct frame_info
*frame
= get_selected_frame (NULL
);
1852 ULONGEST dma_info_type
;
1853 ULONGEST dma_info_mask
;
1854 ULONGEST dma_info_status
;
1855 ULONGEST dma_info_stall_and_notify
;
1856 ULONGEST dma_info_atomic_command_status
;
1857 struct cleanup
*chain
;
1863 id
= get_frame_register_unsigned (frame
, SPU_ID_REGNUM
);
1865 xsnprintf (annex
, sizeof annex
, "%d/dma_info", id
);
1866 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1867 buf
, 0, 40 + 16 * 32);
1869 error (_("Could not read dma_info."));
1871 dma_info_type
= extract_unsigned_integer (buf
, 8);
1872 dma_info_mask
= extract_unsigned_integer (buf
+ 8, 8);
1873 dma_info_status
= extract_unsigned_integer (buf
+ 16, 8);
1874 dma_info_stall_and_notify
= extract_unsigned_integer (buf
+ 24, 8);
1875 dma_info_atomic_command_status
= extract_unsigned_integer (buf
+ 32, 8);
1877 chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "SPUInfoDMA");
1879 if (ui_out_is_mi_like_p (uiout
))
1881 ui_out_field_fmt (uiout
, "dma_info_type", "0x%s",
1882 phex_nz (dma_info_type
, 4));
1883 ui_out_field_fmt (uiout
, "dma_info_mask", "0x%s",
1884 phex_nz (dma_info_mask
, 4));
1885 ui_out_field_fmt (uiout
, "dma_info_status", "0x%s",
1886 phex_nz (dma_info_status
, 4));
1887 ui_out_field_fmt (uiout
, "dma_info_stall_and_notify", "0x%s",
1888 phex_nz (dma_info_stall_and_notify
, 4));
1889 ui_out_field_fmt (uiout
, "dma_info_atomic_command_status", "0x%s",
1890 phex_nz (dma_info_atomic_command_status
, 4));
1894 const char *query_msg
;
1896 switch (dma_info_type
)
1898 case 0: query_msg
= _("no query pending"); break;
1899 case 1: query_msg
= _("'any' query pending"); break;
1900 case 2: query_msg
= _("'all' query pending"); break;
1901 default: query_msg
= _("undefined query type"); break;
1904 printf_filtered (_("Tag-Group Status 0x%s\n"),
1905 phex (dma_info_status
, 4));
1906 printf_filtered (_("Tag-Group Mask 0x%s (%s)\n"),
1907 phex (dma_info_mask
, 4), query_msg
);
1908 printf_filtered (_("Stall-and-Notify 0x%s\n"),
1909 phex (dma_info_stall_and_notify
, 4));
1910 printf_filtered (_("Atomic Cmd Status 0x%s\n"),
1911 phex (dma_info_atomic_command_status
, 4));
1912 printf_filtered ("\n");
1915 info_spu_dma_cmdlist (buf
+ 40, 16);
1916 do_cleanups (chain
);
1920 info_spu_proxydma_command (char *args
, int from_tty
)
1922 struct frame_info
*frame
= get_selected_frame (NULL
);
1923 ULONGEST dma_info_type
;
1924 ULONGEST dma_info_mask
;
1925 ULONGEST dma_info_status
;
1926 struct cleanup
*chain
;
1932 id
= get_frame_register_unsigned (frame
, SPU_ID_REGNUM
);
1934 xsnprintf (annex
, sizeof annex
, "%d/proxydma_info", id
);
1935 len
= target_read (¤t_target
, TARGET_OBJECT_SPU
, annex
,
1936 buf
, 0, 24 + 8 * 32);
1938 error (_("Could not read proxydma_info."));
1940 dma_info_type
= extract_unsigned_integer (buf
, 8);
1941 dma_info_mask
= extract_unsigned_integer (buf
+ 8, 8);
1942 dma_info_status
= extract_unsigned_integer (buf
+ 16, 8);
1944 chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "SPUInfoProxyDMA");
1946 if (ui_out_is_mi_like_p (uiout
))
1948 ui_out_field_fmt (uiout
, "proxydma_info_type", "0x%s",
1949 phex_nz (dma_info_type
, 4));
1950 ui_out_field_fmt (uiout
, "proxydma_info_mask", "0x%s",
1951 phex_nz (dma_info_mask
, 4));
1952 ui_out_field_fmt (uiout
, "proxydma_info_status", "0x%s",
1953 phex_nz (dma_info_status
, 4));
1957 const char *query_msg
;
1959 switch (dma_info_type
)
1961 case 0: query_msg
= _("no query pending"); break;
1962 case 1: query_msg
= _("'any' query pending"); break;
1963 case 2: query_msg
= _("'all' query pending"); break;
1964 default: query_msg
= _("undefined query type"); break;
1967 printf_filtered (_("Tag-Group Status 0x%s\n"),
1968 phex (dma_info_status
, 4));
1969 printf_filtered (_("Tag-Group Mask 0x%s (%s)\n"),
1970 phex (dma_info_mask
, 4), query_msg
);
1971 printf_filtered ("\n");
1974 info_spu_dma_cmdlist (buf
+ 24, 8);
1975 do_cleanups (chain
);
1979 info_spu_command (char *args
, int from_tty
)
1981 printf_unfiltered (_("\"info spu\" must be followed by the name of an SPU facility.\n"));
1982 help_list (infospucmdlist
, "info spu ", -1, gdb_stdout
);
1986 /* Set up gdbarch struct. */
1988 static struct gdbarch
*
1989 spu_gdbarch_init (struct gdbarch_info info
, struct gdbarch_list
*arches
)
1991 struct gdbarch
*gdbarch
;
1992 struct gdbarch_tdep
*tdep
;
1994 /* Find a candidate among the list of pre-declared architectures. */
1995 arches
= gdbarch_list_lookup_by_info (arches
, &info
);
1997 return arches
->gdbarch
;
2000 if (info
.bfd_arch_info
->mach
!= bfd_mach_spu
)
2003 /* Yes, create a new architecture. */
2004 tdep
= XCALLOC (1, struct gdbarch_tdep
);
2005 gdbarch
= gdbarch_alloc (&info
, tdep
);
2008 set_gdbarch_print_insn (gdbarch
, print_insn_spu
);
2011 set_gdbarch_num_regs (gdbarch
, SPU_NUM_REGS
);
2012 set_gdbarch_num_pseudo_regs (gdbarch
, SPU_NUM_PSEUDO_REGS
);
2013 set_gdbarch_sp_regnum (gdbarch
, SPU_SP_REGNUM
);
2014 set_gdbarch_pc_regnum (gdbarch
, SPU_PC_REGNUM
);
2015 set_gdbarch_read_pc (gdbarch
, spu_read_pc
);
2016 set_gdbarch_write_pc (gdbarch
, spu_write_pc
);
2017 set_gdbarch_register_name (gdbarch
, spu_register_name
);
2018 set_gdbarch_register_type (gdbarch
, spu_register_type
);
2019 set_gdbarch_pseudo_register_read (gdbarch
, spu_pseudo_register_read
);
2020 set_gdbarch_pseudo_register_write (gdbarch
, spu_pseudo_register_write
);
2021 set_gdbarch_value_from_register (gdbarch
, spu_value_from_register
);
2022 set_gdbarch_register_reggroup_p (gdbarch
, spu_register_reggroup_p
);
2025 set_gdbarch_char_signed (gdbarch
, 0);
2026 set_gdbarch_ptr_bit (gdbarch
, 32);
2027 set_gdbarch_addr_bit (gdbarch
, 32);
2028 set_gdbarch_short_bit (gdbarch
, 16);
2029 set_gdbarch_int_bit (gdbarch
, 32);
2030 set_gdbarch_long_bit (gdbarch
, 32);
2031 set_gdbarch_long_long_bit (gdbarch
, 64);
2032 set_gdbarch_float_bit (gdbarch
, 32);
2033 set_gdbarch_double_bit (gdbarch
, 64);
2034 set_gdbarch_long_double_bit (gdbarch
, 64);
2035 set_gdbarch_float_format (gdbarch
, floatformats_ieee_single
);
2036 set_gdbarch_double_format (gdbarch
, floatformats_ieee_double
);
2037 set_gdbarch_long_double_format (gdbarch
, floatformats_ieee_double
);
2039 /* Address conversion. */
2040 set_gdbarch_pointer_to_address (gdbarch
, spu_pointer_to_address
);
2041 set_gdbarch_integer_to_address (gdbarch
, spu_integer_to_address
);
2043 /* Inferior function calls. */
2044 set_gdbarch_call_dummy_location (gdbarch
, ON_STACK
);
2045 set_gdbarch_frame_align (gdbarch
, spu_frame_align
);
2046 set_gdbarch_frame_red_zone_size (gdbarch
, 2000);
2047 set_gdbarch_push_dummy_call (gdbarch
, spu_push_dummy_call
);
2048 set_gdbarch_dummy_id (gdbarch
, spu_dummy_id
);
2049 set_gdbarch_return_value (gdbarch
, spu_return_value
);
2051 /* Frame handling. */
2052 set_gdbarch_inner_than (gdbarch
, core_addr_lessthan
);
2053 frame_unwind_append_unwinder (gdbarch
, &spu_frame_unwind
);
2054 frame_base_set_default (gdbarch
, &spu_frame_base
);
2055 set_gdbarch_unwind_pc (gdbarch
, spu_unwind_pc
);
2056 set_gdbarch_unwind_sp (gdbarch
, spu_unwind_sp
);
2057 set_gdbarch_virtual_frame_pointer (gdbarch
, spu_virtual_frame_pointer
);
2058 set_gdbarch_frame_args_skip (gdbarch
, 0);
2059 set_gdbarch_skip_prologue (gdbarch
, spu_skip_prologue
);
2060 set_gdbarch_in_function_epilogue_p (gdbarch
, spu_in_function_epilogue_p
);
2063 set_gdbarch_decr_pc_after_break (gdbarch
, 4);
2064 set_gdbarch_breakpoint_from_pc (gdbarch
, spu_breakpoint_from_pc
);
2065 set_gdbarch_cannot_step_breakpoint (gdbarch
, 1);
2066 set_gdbarch_software_single_step (gdbarch
, spu_software_single_step
);
2069 set_gdbarch_overlay_update (gdbarch
, spu_overlay_update
);
2075 _initialize_spu_tdep (void)
2077 register_gdbarch_init (bfd_arch_spu
, spu_gdbarch_init
);
2079 /* Add ourselves to objfile event chain. */
2080 observer_attach_new_objfile (spu_overlay_new_objfile
);
2081 spu_overlay_data
= register_objfile_data ();
2083 /* Add root prefix command for all "info spu" commands. */
2084 add_prefix_cmd ("spu", class_info
, info_spu_command
,
2085 _("Various SPU specific commands."),
2086 &infospucmdlist
, "info spu ", 0, &infolist
);
2088 /* Add various "info spu" commands. */
2089 add_cmd ("event", class_info
, info_spu_event_command
,
2090 _("Display SPU event facility status.\n"),
2092 add_cmd ("signal", class_info
, info_spu_signal_command
,
2093 _("Display SPU signal notification facility status.\n"),
2095 add_cmd ("mailbox", class_info
, info_spu_mailbox_command
,
2096 _("Display SPU mailbox facility status.\n"),
2098 add_cmd ("dma", class_info
, info_spu_dma_command
,
2099 _("Display MFC DMA status.\n"),
2101 add_cmd ("proxydma", class_info
, info_spu_proxydma_command
,
2102 _("Display MFC Proxy-DMA status.\n"),