1 /* SPU target-dependent code for GDB, the GNU debugger.
2 Copyright (C) 2006-2019 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"
28 #include "frame-unwind.h"
29 #include "frame-base.h"
30 #include "trad-frame.h"
40 #include "reggroups.h"
42 #include "observable.h"
45 #include "dwarf2-frame.h"
50 /* The list of available "set spu " and "show spu " commands. */
51 static struct cmd_list_element *setspucmdlist = NULL;
52 static struct cmd_list_element *showspucmdlist = NULL;
54 /* Whether to stop for new SPE contexts. */
55 static int spu_stop_on_load_p = 0;
56 /* Whether to automatically flush the SW-managed cache. */
57 static int spu_auto_flush_cache_p = 1;
60 /* The tdep structure. */
63 /* The spufs ID identifying our address space. */
66 /* SPU-specific vector type. */
67 struct type *spu_builtin_type_vec128;
71 /* SPU-specific vector type. */
73 spu_builtin_type_vec128 (struct gdbarch *gdbarch)
75 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
77 if (!tdep->spu_builtin_type_vec128)
79 const struct builtin_type *bt = builtin_type (gdbarch);
82 t = arch_composite_type (gdbarch,
83 "__spu_builtin_type_vec128", TYPE_CODE_UNION);
84 append_composite_type_field (t, "uint128", bt->builtin_int128);
85 append_composite_type_field (t, "v2_int64",
86 init_vector_type (bt->builtin_int64, 2));
87 append_composite_type_field (t, "v4_int32",
88 init_vector_type (bt->builtin_int32, 4));
89 append_composite_type_field (t, "v8_int16",
90 init_vector_type (bt->builtin_int16, 8));
91 append_composite_type_field (t, "v16_int8",
92 init_vector_type (bt->builtin_int8, 16));
93 append_composite_type_field (t, "v2_double",
94 init_vector_type (bt->builtin_double, 2));
95 append_composite_type_field (t, "v4_float",
96 init_vector_type (bt->builtin_float, 4));
99 TYPE_NAME (t) = "spu_builtin_type_vec128";
101 tdep->spu_builtin_type_vec128 = t;
104 return tdep->spu_builtin_type_vec128;
108 /* The list of available "info spu " commands. */
109 static struct cmd_list_element *infospucmdlist = NULL;
114 spu_register_name (struct gdbarch *gdbarch, int reg_nr)
116 static const char *register_names[] =
118 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
119 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
120 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
121 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
122 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
123 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
124 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
125 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
126 "r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71",
127 "r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79",
128 "r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87",
129 "r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95",
130 "r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103",
131 "r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111",
132 "r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119",
133 "r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127",
134 "id", "pc", "sp", "fpscr", "srr0", "lslr", "decr", "decr_status"
139 if (reg_nr >= sizeof register_names / sizeof *register_names)
142 return register_names[reg_nr];
146 spu_register_type (struct gdbarch *gdbarch, int reg_nr)
148 if (reg_nr < SPU_NUM_GPRS)
149 return spu_builtin_type_vec128 (gdbarch);
154 return builtin_type (gdbarch)->builtin_uint32;
157 return builtin_type (gdbarch)->builtin_func_ptr;
160 return builtin_type (gdbarch)->builtin_data_ptr;
162 case SPU_FPSCR_REGNUM:
163 return builtin_type (gdbarch)->builtin_uint128;
165 case SPU_SRR0_REGNUM:
166 return builtin_type (gdbarch)->builtin_uint32;
168 case SPU_LSLR_REGNUM:
169 return builtin_type (gdbarch)->builtin_uint32;
171 case SPU_DECR_REGNUM:
172 return builtin_type (gdbarch)->builtin_uint32;
174 case SPU_DECR_STATUS_REGNUM:
175 return builtin_type (gdbarch)->builtin_uint32;
178 internal_error (__FILE__, __LINE__, _("invalid regnum"));
182 /* Pseudo registers for preferred slots - stack pointer. */
184 static enum register_status
185 spu_pseudo_register_read_spu (readable_regcache *regcache, const char *regname,
188 struct gdbarch *gdbarch = regcache->arch ();
189 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
190 enum register_status status;
196 status = regcache->raw_read (SPU_ID_REGNUM, &id);
197 if (status != REG_VALID)
199 xsnprintf (annex, sizeof annex, "%d/%s", (int) id, regname);
200 memset (reg, 0, sizeof reg);
201 target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
204 ul = strtoulst ((char *) reg, NULL, 16);
205 store_unsigned_integer (buf, 4, byte_order, ul);
209 static enum register_status
210 spu_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache,
211 int regnum, gdb_byte *buf)
216 enum register_status status;
221 status = regcache->raw_read (SPU_RAW_SP_REGNUM, reg);
222 if (status != REG_VALID)
224 memcpy (buf, reg, 4);
227 case SPU_FPSCR_REGNUM:
228 status = regcache->raw_read (SPU_ID_REGNUM, &id);
229 if (status != REG_VALID)
231 xsnprintf (annex, sizeof annex, "%d/fpcr", (int) id);
232 target_read (current_top_target (), TARGET_OBJECT_SPU, annex, buf, 0, 16);
235 case SPU_SRR0_REGNUM:
236 return spu_pseudo_register_read_spu (regcache, "srr0", buf);
238 case SPU_LSLR_REGNUM:
239 return spu_pseudo_register_read_spu (regcache, "lslr", buf);
241 case SPU_DECR_REGNUM:
242 return spu_pseudo_register_read_spu (regcache, "decr", buf);
244 case SPU_DECR_STATUS_REGNUM:
245 return spu_pseudo_register_read_spu (regcache, "decr_status", buf);
248 internal_error (__FILE__, __LINE__, _("invalid regnum"));
253 spu_pseudo_register_write_spu (struct regcache *regcache, const char *regname,
256 struct gdbarch *gdbarch = regcache->arch ();
257 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
262 regcache_raw_read_unsigned (regcache, SPU_ID_REGNUM, &id);
263 xsnprintf (annex, sizeof annex, "%d/%s", (int) id, regname);
264 xsnprintf (reg, sizeof reg, "0x%s",
265 phex_nz (extract_unsigned_integer (buf, 4, byte_order), 4));
266 target_write (current_top_target (), TARGET_OBJECT_SPU, annex,
267 (gdb_byte *) reg, 0, strlen (reg));
271 spu_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
272 int regnum, const gdb_byte *buf)
281 regcache->raw_read (SPU_RAW_SP_REGNUM, reg);
282 memcpy (reg, buf, 4);
283 regcache->raw_write (SPU_RAW_SP_REGNUM, reg);
286 case SPU_FPSCR_REGNUM:
287 regcache_raw_read_unsigned (regcache, SPU_ID_REGNUM, &id);
288 xsnprintf (annex, sizeof annex, "%d/fpcr", (int) id);
289 target_write (current_top_target (), TARGET_OBJECT_SPU, annex, buf, 0, 16);
292 case SPU_SRR0_REGNUM:
293 spu_pseudo_register_write_spu (regcache, "srr0", buf);
296 case SPU_LSLR_REGNUM:
297 spu_pseudo_register_write_spu (regcache, "lslr", buf);
300 case SPU_DECR_REGNUM:
301 spu_pseudo_register_write_spu (regcache, "decr", buf);
304 case SPU_DECR_STATUS_REGNUM:
305 spu_pseudo_register_write_spu (regcache, "decr_status", buf);
309 internal_error (__FILE__, __LINE__, _("invalid regnum"));
314 spu_ax_pseudo_register_collect (struct gdbarch *gdbarch,
315 struct agent_expr *ax, int regnum)
320 ax_reg_mask (ax, SPU_RAW_SP_REGNUM);
323 case SPU_FPSCR_REGNUM:
324 case SPU_SRR0_REGNUM:
325 case SPU_LSLR_REGNUM:
326 case SPU_DECR_REGNUM:
327 case SPU_DECR_STATUS_REGNUM:
331 internal_error (__FILE__, __LINE__, _("invalid regnum"));
336 spu_ax_pseudo_register_push_stack (struct gdbarch *gdbarch,
337 struct agent_expr *ax, int regnum)
342 ax_reg (ax, SPU_RAW_SP_REGNUM);
345 case SPU_FPSCR_REGNUM:
346 case SPU_SRR0_REGNUM:
347 case SPU_LSLR_REGNUM:
348 case SPU_DECR_REGNUM:
349 case SPU_DECR_STATUS_REGNUM:
353 internal_error (__FILE__, __LINE__, _("invalid regnum"));
358 /* Value conversion -- access scalar values at the preferred slot. */
360 static struct value *
361 spu_value_from_register (struct gdbarch *gdbarch, struct type *type,
362 int regnum, struct frame_id frame_id)
364 struct value *value = default_value_from_register (gdbarch, type,
366 LONGEST len = TYPE_LENGTH (type);
368 if (regnum < SPU_NUM_GPRS && len < 16)
370 int preferred_slot = len < 4 ? 4 - len : 0;
371 set_value_offset (value, preferred_slot);
377 /* Register groups. */
380 spu_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
381 struct reggroup *group)
383 /* Registers displayed via 'info regs'. */
384 if (group == general_reggroup)
387 /* Registers displayed via 'info float'. */
388 if (group == float_reggroup)
391 /* Registers that need to be saved/restored in order to
392 push or pop frames. */
393 if (group == save_reggroup || group == restore_reggroup)
396 return default_register_reggroup_p (gdbarch, regnum, group);
399 /* DWARF-2 register numbers. */
402 spu_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
404 /* Use cooked instead of raw SP. */
405 return (reg == SPU_RAW_SP_REGNUM)? SPU_SP_REGNUM : reg;
409 /* Address handling. */
412 spu_gdbarch_id (struct gdbarch *gdbarch)
414 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
417 /* The objfile architecture of a standalone SPU executable does not
418 provide an SPU ID. Retrieve it from the objfile's relocated
419 address range in this special case. */
421 && symfile_objfile && symfile_objfile->obfd
422 && bfd_get_arch (symfile_objfile->obfd) == bfd_arch_spu
423 && symfile_objfile->sections != symfile_objfile->sections_end)
424 id = SPUADDR_SPU (obj_section_addr (symfile_objfile->sections));
430 spu_address_class_type_flags (int byte_size, int dwarf2_addr_class)
432 if (dwarf2_addr_class == 1)
433 return TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1;
439 spu_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags)
441 if (type_flags & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
448 spu_address_class_name_to_type_flags (struct gdbarch *gdbarch,
449 const char *name, int *type_flags_ptr)
451 if (strcmp (name, "__ea") == 0)
453 *type_flags_ptr = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1;
461 spu_address_to_pointer (struct gdbarch *gdbarch,
462 struct type *type, gdb_byte *buf, CORE_ADDR addr)
464 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
465 store_unsigned_integer (buf, TYPE_LENGTH (type), byte_order,
466 SPUADDR_ADDR (addr));
470 spu_pointer_to_address (struct gdbarch *gdbarch,
471 struct type *type, const gdb_byte *buf)
473 int id = spu_gdbarch_id (gdbarch);
474 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
476 = extract_unsigned_integer (buf, TYPE_LENGTH (type), byte_order);
478 /* Do not convert __ea pointers. */
479 if (TYPE_ADDRESS_CLASS_1 (type))
482 return addr? SPUADDR (id, addr) : 0;
486 spu_integer_to_address (struct gdbarch *gdbarch,
487 struct type *type, const gdb_byte *buf)
489 int id = spu_gdbarch_id (gdbarch);
490 ULONGEST addr = unpack_long (type, buf);
492 return SPUADDR (id, addr);
496 /* Decoding SPU instructions. */
533 is_rr (unsigned int insn, int op, int *rt, int *ra, int *rb)
535 if ((insn >> 21) == op)
538 *ra = (insn >> 7) & 127;
539 *rb = (insn >> 14) & 127;
547 is_rrr (unsigned int insn, int op, int *rt, int *ra, int *rb, int *rc)
549 if ((insn >> 28) == op)
551 *rt = (insn >> 21) & 127;
552 *ra = (insn >> 7) & 127;
553 *rb = (insn >> 14) & 127;
562 is_ri7 (unsigned int insn, int op, int *rt, int *ra, int *i7)
564 if ((insn >> 21) == op)
567 *ra = (insn >> 7) & 127;
568 *i7 = (((insn >> 14) & 127) ^ 0x40) - 0x40;
576 is_ri10 (unsigned int insn, int op, int *rt, int *ra, int *i10)
578 if ((insn >> 24) == op)
581 *ra = (insn >> 7) & 127;
582 *i10 = (((insn >> 14) & 0x3ff) ^ 0x200) - 0x200;
590 is_ri16 (unsigned int insn, int op, int *rt, int *i16)
592 if ((insn >> 23) == op)
595 *i16 = (((insn >> 7) & 0xffff) ^ 0x8000) - 0x8000;
603 is_ri18 (unsigned int insn, int op, int *rt, int *i18)
605 if ((insn >> 25) == op)
608 *i18 = (((insn >> 7) & 0x3ffff) ^ 0x20000) - 0x20000;
616 is_branch (unsigned int insn, int *offset, int *reg)
620 if (is_ri16 (insn, op_br, &rt, &i16)
621 || is_ri16 (insn, op_brsl, &rt, &i16)
622 || is_ri16 (insn, op_brnz, &rt, &i16)
623 || is_ri16 (insn, op_brz, &rt, &i16)
624 || is_ri16 (insn, op_brhnz, &rt, &i16)
625 || is_ri16 (insn, op_brhz, &rt, &i16))
627 *reg = SPU_PC_REGNUM;
632 if (is_ri16 (insn, op_bra, &rt, &i16)
633 || is_ri16 (insn, op_brasl, &rt, &i16))
640 if (is_ri7 (insn, op_bi, &rt, reg, &i7)
641 || is_ri7 (insn, op_bisl, &rt, reg, &i7)
642 || is_ri7 (insn, op_biz, &rt, reg, &i7)
643 || is_ri7 (insn, op_binz, &rt, reg, &i7)
644 || is_ri7 (insn, op_bihz, &rt, reg, &i7)
645 || is_ri7 (insn, op_bihnz, &rt, reg, &i7))
655 /* Prolog parsing. */
657 struct spu_prologue_data
659 /* Stack frame size. -1 if analysis was unsuccessful. */
662 /* How to find the CFA. The CFA is equal to SP at function entry. */
666 /* Offset relative to CFA where a register is saved. -1 if invalid. */
667 int reg_offset[SPU_NUM_GPRS];
671 spu_analyze_prologue (struct gdbarch *gdbarch,
672 CORE_ADDR start_pc, CORE_ADDR end_pc,
673 struct spu_prologue_data *data)
675 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
680 int reg_immed[SPU_NUM_GPRS];
682 CORE_ADDR prolog_pc = start_pc;
687 /* Initialize DATA to default values. */
690 data->cfa_reg = SPU_RAW_SP_REGNUM;
691 data->cfa_offset = 0;
693 for (i = 0; i < SPU_NUM_GPRS; i++)
694 data->reg_offset[i] = -1;
696 /* Set up REG_IMMED array. This is non-zero for a register if we know its
697 preferred slot currently holds this immediate value. */
698 for (i = 0; i < SPU_NUM_GPRS; i++)
701 /* Scan instructions until the first branch.
703 The following instructions are important prolog components:
705 - The first instruction to set up the stack pointer.
706 - The first instruction to set up the frame pointer.
707 - The first instruction to save the link register.
708 - The first instruction to save the backchain.
710 We return the instruction after the latest of these four,
711 or the incoming PC if none is found. The first instruction
712 to set up the stack pointer also defines the frame size.
714 Note that instructions saving incoming arguments to their stack
715 slots are not counted as important, because they are hard to
716 identify with certainty. This should not matter much, because
717 arguments are relevant only in code compiled with debug data,
718 and in such code the GDB core will advance until the first source
719 line anyway, using SAL data.
721 For purposes of stack unwinding, we analyze the following types
722 of instructions in addition:
724 - Any instruction adding to the current frame pointer.
725 - Any instruction loading an immediate constant into a register.
726 - Any instruction storing a register onto the stack.
728 These are used to compute the CFA and REG_OFFSET output. */
730 for (pc = start_pc; pc < end_pc; pc += 4)
733 int rt, ra, rb, rc, immed;
735 if (target_read_memory (pc, buf, 4))
737 insn = extract_unsigned_integer (buf, 4, byte_order);
739 /* AI is the typical instruction to set up a stack frame.
740 It is also used to initialize the frame pointer. */
741 if (is_ri10 (insn, op_ai, &rt, &ra, &immed))
743 if (rt == data->cfa_reg && ra == data->cfa_reg)
744 data->cfa_offset -= immed;
746 if (rt == SPU_RAW_SP_REGNUM && ra == SPU_RAW_SP_REGNUM
754 else if (rt == SPU_FP_REGNUM && ra == SPU_RAW_SP_REGNUM
760 data->cfa_reg = SPU_FP_REGNUM;
761 data->cfa_offset -= immed;
765 /* A is used to set up stack frames of size >= 512 bytes.
766 If we have tracked the contents of the addend register,
767 we can handle this as well. */
768 else if (is_rr (insn, op_a, &rt, &ra, &rb))
770 if (rt == data->cfa_reg && ra == data->cfa_reg)
772 if (reg_immed[rb] != 0)
773 data->cfa_offset -= reg_immed[rb];
775 data->cfa_reg = -1; /* We don't know the CFA any more. */
778 if (rt == SPU_RAW_SP_REGNUM && ra == SPU_RAW_SP_REGNUM
784 if (reg_immed[rb] != 0)
785 data->size = -reg_immed[rb];
789 /* We need to track IL and ILA used to load immediate constants
790 in case they are later used as input to an A instruction. */
791 else if (is_ri16 (insn, op_il, &rt, &immed))
793 reg_immed[rt] = immed;
795 if (rt == SPU_RAW_SP_REGNUM && !found_sp)
799 else if (is_ri18 (insn, op_ila, &rt, &immed))
801 reg_immed[rt] = immed & 0x3ffff;
803 if (rt == SPU_RAW_SP_REGNUM && !found_sp)
807 /* STQD is used to save registers to the stack. */
808 else if (is_ri10 (insn, op_stqd, &rt, &ra, &immed))
810 if (ra == data->cfa_reg)
811 data->reg_offset[rt] = data->cfa_offset - (immed << 4);
813 if (ra == data->cfa_reg && rt == SPU_LR_REGNUM
820 if (ra == SPU_RAW_SP_REGNUM
821 && (found_sp? immed == 0 : rt == SPU_RAW_SP_REGNUM)
829 /* _start uses SELB to set up the stack pointer. */
830 else if (is_rrr (insn, op_selb, &rt, &ra, &rb, &rc))
832 if (rt == SPU_RAW_SP_REGNUM && !found_sp)
836 /* We terminate if we find a branch. */
837 else if (is_branch (insn, &immed, &ra))
842 /* If we successfully parsed until here, and didn't find any instruction
843 modifying SP, we assume we have a frameless function. */
847 /* Return cooked instead of raw SP. */
848 if (data->cfa_reg == SPU_RAW_SP_REGNUM)
849 data->cfa_reg = SPU_SP_REGNUM;
854 /* Return the first instruction after the prologue starting at PC. */
856 spu_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
858 struct spu_prologue_data data;
859 return spu_analyze_prologue (gdbarch, pc, (CORE_ADDR)-1, &data);
862 /* Return the frame pointer in use at address PC. */
864 spu_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc,
865 int *reg, LONGEST *offset)
867 struct spu_prologue_data data;
868 spu_analyze_prologue (gdbarch, pc, (CORE_ADDR)-1, &data);
870 if (data.size != -1 && data.cfa_reg != -1)
872 /* The 'frame pointer' address is CFA minus frame size. */
874 *offset = data.cfa_offset - data.size;
878 /* ??? We don't really know ... */
879 *reg = SPU_SP_REGNUM;
884 /* Implement the stack_frame_destroyed_p gdbarch method.
886 1) scan forward from the point of execution:
887 a) If you find an instruction that modifies the stack pointer
888 or transfers control (except a return), execution is not in
890 b) Stop scanning if you find a return instruction or reach the
891 end of the function or reach the hard limit for the size of
893 2) scan backward from the point of execution:
894 a) If you find an instruction that modifies the stack pointer,
895 execution *is* in an epilogue, return.
896 b) Stop scanning if you reach an instruction that transfers
897 control or the beginning of the function or reach the hard
898 limit for the size of an epilogue. */
901 spu_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
903 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
904 CORE_ADDR scan_pc, func_start, func_end, epilogue_start, epilogue_end;
907 int rt, ra, rb, immed;
909 /* Find the search limits based on function boundaries and hard limit.
910 We assume the epilogue can be up to 64 instructions long. */
912 const int spu_max_epilogue_size = 64 * 4;
914 if (!find_pc_partial_function (pc, NULL, &func_start, &func_end))
917 if (pc - func_start < spu_max_epilogue_size)
918 epilogue_start = func_start;
920 epilogue_start = pc - spu_max_epilogue_size;
922 if (func_end - pc < spu_max_epilogue_size)
923 epilogue_end = func_end;
925 epilogue_end = pc + spu_max_epilogue_size;
927 /* Scan forward until next 'bi $0'. */
929 for (scan_pc = pc; scan_pc < epilogue_end; scan_pc += 4)
931 if (target_read_memory (scan_pc, buf, 4))
933 insn = extract_unsigned_integer (buf, 4, byte_order);
935 if (is_branch (insn, &immed, &ra))
937 if (immed == 0 && ra == SPU_LR_REGNUM)
943 if (is_ri10 (insn, op_ai, &rt, &ra, &immed)
944 || is_rr (insn, op_a, &rt, &ra, &rb)
945 || is_ri10 (insn, op_lqd, &rt, &ra, &immed))
947 if (rt == SPU_RAW_SP_REGNUM)
952 if (scan_pc >= epilogue_end)
955 /* Scan backward until adjustment to stack pointer (R1). */
957 for (scan_pc = pc - 4; scan_pc >= epilogue_start; scan_pc -= 4)
959 if (target_read_memory (scan_pc, buf, 4))
961 insn = extract_unsigned_integer (buf, 4, byte_order);
963 if (is_branch (insn, &immed, &ra))
966 if (is_ri10 (insn, op_ai, &rt, &ra, &immed)
967 || is_rr (insn, op_a, &rt, &ra, &rb)
968 || is_ri10 (insn, op_lqd, &rt, &ra, &immed))
970 if (rt == SPU_RAW_SP_REGNUM)
979 /* Normal stack frames. */
981 struct spu_unwind_cache
984 CORE_ADDR frame_base;
985 CORE_ADDR local_base;
987 struct trad_frame_saved_reg *saved_regs;
990 static struct spu_unwind_cache *
991 spu_frame_unwind_cache (struct frame_info *this_frame,
992 void **this_prologue_cache)
994 struct gdbarch *gdbarch = get_frame_arch (this_frame);
995 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
996 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
997 struct spu_unwind_cache *info;
998 struct spu_prologue_data data;
999 CORE_ADDR id = tdep->id;
1002 if (*this_prologue_cache)
1003 return (struct spu_unwind_cache *) *this_prologue_cache;
1005 info = FRAME_OBSTACK_ZALLOC (struct spu_unwind_cache);
1006 *this_prologue_cache = info;
1007 info->saved_regs = trad_frame_alloc_saved_regs (this_frame);
1008 info->frame_base = 0;
1009 info->local_base = 0;
1011 /* Find the start of the current function, and analyze its prologue. */
1012 info->func = get_frame_func (this_frame);
1013 if (info->func == 0)
1015 /* Fall back to using the current PC as frame ID. */
1016 info->func = get_frame_pc (this_frame);
1020 spu_analyze_prologue (gdbarch, info->func, get_frame_pc (this_frame),
1023 /* If successful, use prologue analysis data. */
1024 if (data.size != -1 && data.cfa_reg != -1)
1029 /* Determine CFA via unwound CFA_REG plus CFA_OFFSET. */
1030 get_frame_register (this_frame, data.cfa_reg, buf);
1031 cfa = extract_unsigned_integer (buf, 4, byte_order) + data.cfa_offset;
1032 cfa = SPUADDR (id, cfa);
1034 /* Call-saved register slots. */
1035 for (i = 0; i < SPU_NUM_GPRS; i++)
1036 if (i == SPU_LR_REGNUM
1037 || (i >= SPU_SAVED1_REGNUM && i <= SPU_SAVEDN_REGNUM))
1038 if (data.reg_offset[i] != -1)
1039 info->saved_regs[i].addr = cfa - data.reg_offset[i];
1042 info->frame_base = cfa;
1043 info->local_base = cfa - data.size;
1046 /* Otherwise, fall back to reading the backchain link. */
1054 /* Get local store limit. */
1055 lslr = get_frame_register_unsigned (this_frame, SPU_LSLR_REGNUM);
1057 lslr = (ULONGEST) -1;
1059 /* Get the backchain. */
1060 reg = get_frame_register_unsigned (this_frame, SPU_SP_REGNUM);
1061 status = safe_read_memory_integer (SPUADDR (id, reg), 4, byte_order,
1064 /* A zero backchain terminates the frame chain. Also, sanity
1065 check against the local store size limit. */
1066 if (status && backchain > 0 && backchain <= lslr)
1068 /* Assume the link register is saved into its slot. */
1069 if (backchain + 16 <= lslr)
1070 info->saved_regs[SPU_LR_REGNUM].addr = SPUADDR (id,
1074 info->frame_base = SPUADDR (id, backchain);
1075 info->local_base = SPUADDR (id, reg);
1079 /* If we didn't find a frame, we cannot determine SP / return address. */
1080 if (info->frame_base == 0)
1083 /* The previous SP is equal to the CFA. */
1084 trad_frame_set_value (info->saved_regs, SPU_SP_REGNUM,
1085 SPUADDR_ADDR (info->frame_base));
1087 /* Read full contents of the unwound link register in order to
1088 be able to determine the return address. */
1089 if (trad_frame_addr_p (info->saved_regs, SPU_LR_REGNUM))
1090 target_read_memory (info->saved_regs[SPU_LR_REGNUM].addr, buf, 16);
1092 get_frame_register (this_frame, SPU_LR_REGNUM, buf);
1094 /* Normally, the return address is contained in the slot 0 of the
1095 link register, and slots 1-3 are zero. For an overlay return,
1096 slot 0 contains the address of the overlay manager return stub,
1097 slot 1 contains the partition number of the overlay section to
1098 be returned to, and slot 2 contains the return address within
1099 that section. Return the latter address in that case. */
1100 if (extract_unsigned_integer (buf + 8, 4, byte_order) != 0)
1101 trad_frame_set_value (info->saved_regs, SPU_PC_REGNUM,
1102 extract_unsigned_integer (buf + 8, 4, byte_order));
1104 trad_frame_set_value (info->saved_regs, SPU_PC_REGNUM,
1105 extract_unsigned_integer (buf, 4, byte_order));
1111 spu_frame_this_id (struct frame_info *this_frame,
1112 void **this_prologue_cache, struct frame_id *this_id)
1114 struct spu_unwind_cache *info =
1115 spu_frame_unwind_cache (this_frame, this_prologue_cache);
1117 if (info->frame_base == 0)
1120 *this_id = frame_id_build (info->frame_base, info->func);
1123 static struct value *
1124 spu_frame_prev_register (struct frame_info *this_frame,
1125 void **this_prologue_cache, int regnum)
1127 struct spu_unwind_cache *info
1128 = spu_frame_unwind_cache (this_frame, this_prologue_cache);
1130 /* Special-case the stack pointer. */
1131 if (regnum == SPU_RAW_SP_REGNUM)
1132 regnum = SPU_SP_REGNUM;
1134 return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
1137 static const struct frame_unwind spu_frame_unwind = {
1139 default_frame_unwind_stop_reason,
1141 spu_frame_prev_register,
1143 default_frame_sniffer
1147 spu_frame_base_address (struct frame_info *this_frame, void **this_cache)
1149 struct spu_unwind_cache *info
1150 = spu_frame_unwind_cache (this_frame, this_cache);
1151 return info->local_base;
1154 static const struct frame_base spu_frame_base = {
1156 spu_frame_base_address,
1157 spu_frame_base_address,
1158 spu_frame_base_address
1162 spu_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
1164 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1165 CORE_ADDR pc = frame_unwind_register_unsigned (next_frame, SPU_PC_REGNUM);
1166 /* Mask off interrupt enable bit. */
1167 return SPUADDR (tdep->id, pc & -4);
1171 spu_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
1173 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1174 CORE_ADDR sp = frame_unwind_register_unsigned (next_frame, SPU_SP_REGNUM);
1175 return SPUADDR (tdep->id, sp);
1179 spu_read_pc (readable_regcache *regcache)
1181 struct gdbarch_tdep *tdep = gdbarch_tdep (regcache->arch ());
1184 regcache->cooked_read (SPU_PC_REGNUM, &pc);
1185 /* Mask off interrupt enable bit. */
1186 return SPUADDR (tdep->id, pc & -4);
1190 spu_write_pc (struct regcache *regcache, CORE_ADDR pc)
1192 /* Keep interrupt enabled state unchanged. */
1195 regcache_cooked_read_unsigned (regcache, SPU_PC_REGNUM, &old_pc);
1196 regcache_cooked_write_unsigned (regcache, SPU_PC_REGNUM,
1197 (SPUADDR_ADDR (pc) & -4) | (old_pc & 3));
1201 /* Cell/B.E. cross-architecture unwinder support. */
1203 struct spu2ppu_cache
1205 struct frame_id frame_id;
1206 readonly_detached_regcache *regcache;
1209 static struct gdbarch *
1210 spu2ppu_prev_arch (struct frame_info *this_frame, void **this_cache)
1212 struct spu2ppu_cache *cache = (struct spu2ppu_cache *) *this_cache;
1213 return cache->regcache->arch ();
1217 spu2ppu_this_id (struct frame_info *this_frame,
1218 void **this_cache, struct frame_id *this_id)
1220 struct spu2ppu_cache *cache = (struct spu2ppu_cache *) *this_cache;
1221 *this_id = cache->frame_id;
1224 static struct value *
1225 spu2ppu_prev_register (struct frame_info *this_frame,
1226 void **this_cache, int regnum)
1228 struct spu2ppu_cache *cache = (struct spu2ppu_cache *) *this_cache;
1229 struct gdbarch *gdbarch = cache->regcache->arch ();
1232 buf = (gdb_byte *) alloca (register_size (gdbarch, regnum));
1233 cache->regcache->cooked_read (regnum, buf);
1234 return frame_unwind_got_bytes (this_frame, regnum, buf);
1238 spu2ppu_sniffer (const struct frame_unwind *self,
1239 struct frame_info *this_frame, void **this_prologue_cache)
1241 struct gdbarch *gdbarch = get_frame_arch (this_frame);
1242 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1243 CORE_ADDR base, func, backchain;
1246 if (gdbarch_bfd_arch_info (target_gdbarch ())->arch == bfd_arch_spu)
1249 base = get_frame_sp (this_frame);
1250 func = get_frame_pc (this_frame);
1251 if (target_read_memory (base, buf, 4))
1253 backchain = extract_unsigned_integer (buf, 4, byte_order);
1257 struct frame_info *fi;
1259 struct spu2ppu_cache *cache
1260 = FRAME_OBSTACK_CALLOC (1, struct spu2ppu_cache);
1262 cache->frame_id = frame_id_build (base + 16, func);
1264 for (fi = get_next_frame (this_frame); fi; fi = get_next_frame (fi))
1265 if (gdbarch_bfd_arch_info (get_frame_arch (fi))->arch != bfd_arch_spu)
1270 cache->regcache = frame_save_as_regcache (fi).release ();
1271 *this_prologue_cache = cache;
1276 struct regcache *regcache;
1277 regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ());
1278 cache->regcache = new readonly_detached_regcache (*regcache);
1279 *this_prologue_cache = cache;
1288 spu2ppu_dealloc_cache (struct frame_info *self, void *this_cache)
1290 struct spu2ppu_cache *cache = (struct spu2ppu_cache *) this_cache;
1291 delete cache->regcache;
1294 static const struct frame_unwind spu2ppu_unwind = {
1296 default_frame_unwind_stop_reason,
1298 spu2ppu_prev_register,
1301 spu2ppu_dealloc_cache,
1306 /* Function calling convention. */
1309 spu_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
1315 spu_push_dummy_code (struct gdbarch *gdbarch, CORE_ADDR sp, CORE_ADDR funaddr,
1316 struct value **args, int nargs, struct type *value_type,
1317 CORE_ADDR *real_pc, CORE_ADDR *bp_addr,
1318 struct regcache *regcache)
1320 /* Allocate space sufficient for a breakpoint, keeping the stack aligned. */
1321 sp = (sp - 4) & ~15;
1322 /* Store the address of that breakpoint */
1324 /* The call starts at the callee's entry point. */
1331 spu_scalar_value_p (struct type *type)
1333 switch (TYPE_CODE (type))
1336 case TYPE_CODE_ENUM:
1337 case TYPE_CODE_RANGE:
1338 case TYPE_CODE_CHAR:
1339 case TYPE_CODE_BOOL:
1342 case TYPE_CODE_RVALUE_REF:
1343 return TYPE_LENGTH (type) <= 16;
1351 spu_value_to_regcache (struct regcache *regcache, int regnum,
1352 struct type *type, const gdb_byte *in)
1354 int len = TYPE_LENGTH (type);
1356 if (spu_scalar_value_p (type))
1358 int preferred_slot = len < 4 ? 4 - len : 0;
1359 regcache->cooked_write_part (regnum, preferred_slot, len, in);
1365 regcache->cooked_write (regnum++, in);
1371 regcache->cooked_write_part (regnum, 0, len, in);
1376 spu_regcache_to_value (struct regcache *regcache, int regnum,
1377 struct type *type, gdb_byte *out)
1379 int len = TYPE_LENGTH (type);
1381 if (spu_scalar_value_p (type))
1383 int preferred_slot = len < 4 ? 4 - len : 0;
1384 regcache->cooked_read_part (regnum, preferred_slot, len, out);
1390 regcache->cooked_read (regnum++, out);
1396 regcache->cooked_read_part (regnum, 0, len, out);
1401 spu_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
1402 struct regcache *regcache, CORE_ADDR bp_addr,
1403 int nargs, struct value **args, CORE_ADDR sp,
1404 function_call_return_method return_method,
1405 CORE_ADDR struct_addr)
1407 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1410 int regnum = SPU_ARG1_REGNUM;
1414 /* Set the return address. */
1415 memset (buf, 0, sizeof buf);
1416 store_unsigned_integer (buf, 4, byte_order, SPUADDR_ADDR (bp_addr));
1417 regcache->cooked_write (SPU_LR_REGNUM, buf);
1419 /* If STRUCT_RETURN is true, then the struct return address (in
1420 STRUCT_ADDR) will consume the first argument-passing register.
1421 Both adjust the register count and store that value. */
1422 if (return_method == return_method_struct)
1424 memset (buf, 0, sizeof buf);
1425 store_unsigned_integer (buf, 4, byte_order, SPUADDR_ADDR (struct_addr));
1426 regcache->cooked_write (regnum++, buf);
1429 /* Fill in argument registers. */
1430 for (i = 0; i < nargs; i++)
1432 struct value *arg = args[i];
1433 struct type *type = check_typedef (value_type (arg));
1434 const gdb_byte *contents = value_contents (arg);
1435 int n_regs = align_up (TYPE_LENGTH (type), 16) / 16;
1437 /* If the argument doesn't wholly fit into registers, it and
1438 all subsequent arguments go to the stack. */
1439 if (regnum + n_regs - 1 > SPU_ARGN_REGNUM)
1445 spu_value_to_regcache (regcache, regnum, type, contents);
1449 /* Overflow arguments go to the stack. */
1450 if (stack_arg != -1)
1454 /* Allocate all required stack size. */
1455 for (i = stack_arg; i < nargs; i++)
1457 struct type *type = check_typedef (value_type (args[i]));
1458 sp -= align_up (TYPE_LENGTH (type), 16);
1461 /* Fill in stack arguments. */
1463 for (i = stack_arg; i < nargs; i++)
1465 struct value *arg = args[i];
1466 struct type *type = check_typedef (value_type (arg));
1467 int len = TYPE_LENGTH (type);
1470 if (spu_scalar_value_p (type))
1471 preferred_slot = len < 4 ? 4 - len : 0;
1475 target_write_memory (ap + preferred_slot, value_contents (arg), len);
1476 ap += align_up (TYPE_LENGTH (type), 16);
1480 /* Allocate stack frame header. */
1483 /* Store stack back chain. */
1484 regcache->cooked_read (SPU_RAW_SP_REGNUM, buf);
1485 target_write_memory (sp, buf, 16);
1487 /* Finally, update all slots of the SP register. */
1488 sp_delta = sp - extract_unsigned_integer (buf, 4, byte_order);
1489 for (i = 0; i < 4; i++)
1491 CORE_ADDR sp_slot = extract_unsigned_integer (buf + 4*i, 4, byte_order);
1492 store_unsigned_integer (buf + 4*i, 4, byte_order, sp_slot + sp_delta);
1494 regcache->cooked_write (SPU_RAW_SP_REGNUM, buf);
1499 static struct frame_id
1500 spu_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
1502 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1503 CORE_ADDR pc = get_frame_register_unsigned (this_frame, SPU_PC_REGNUM);
1504 CORE_ADDR sp = get_frame_register_unsigned (this_frame, SPU_SP_REGNUM);
1505 return frame_id_build (SPUADDR (tdep->id, sp), SPUADDR (tdep->id, pc & -4));
1508 /* Function return value access. */
1510 static enum return_value_convention
1511 spu_return_value (struct gdbarch *gdbarch, struct value *function,
1512 struct type *type, struct regcache *regcache,
1513 gdb_byte *out, const gdb_byte *in)
1515 struct type *func_type = function ? value_type (function) : NULL;
1516 enum return_value_convention rvc;
1517 int opencl_vector = 0;
1521 func_type = check_typedef (func_type);
1523 if (TYPE_CODE (func_type) == TYPE_CODE_PTR)
1524 func_type = check_typedef (TYPE_TARGET_TYPE (func_type));
1526 if (TYPE_CODE (func_type) == TYPE_CODE_FUNC
1527 && TYPE_CALLING_CONVENTION (func_type) == DW_CC_GDB_IBM_OpenCL
1528 && TYPE_CODE (type) == TYPE_CODE_ARRAY
1529 && TYPE_VECTOR (type))
1533 if (TYPE_LENGTH (type) <= (SPU_ARGN_REGNUM - SPU_ARG1_REGNUM + 1) * 16)
1534 rvc = RETURN_VALUE_REGISTER_CONVENTION;
1536 rvc = RETURN_VALUE_STRUCT_CONVENTION;
1542 case RETURN_VALUE_REGISTER_CONVENTION:
1543 if (opencl_vector && TYPE_LENGTH (type) == 2)
1544 regcache->cooked_write_part (SPU_ARG1_REGNUM, 2, 2, in);
1546 spu_value_to_regcache (regcache, SPU_ARG1_REGNUM, type, in);
1549 case RETURN_VALUE_STRUCT_CONVENTION:
1550 error (_("Cannot set function return value."));
1558 case RETURN_VALUE_REGISTER_CONVENTION:
1559 if (opencl_vector && TYPE_LENGTH (type) == 2)
1560 regcache->cooked_read_part (SPU_ARG1_REGNUM, 2, 2, out);
1562 spu_regcache_to_value (regcache, SPU_ARG1_REGNUM, type, out);
1565 case RETURN_VALUE_STRUCT_CONVENTION:
1566 error (_("Function return value unknown."));
1576 constexpr gdb_byte spu_break_insn[] = { 0x00, 0x00, 0x3f, 0xff };
1578 typedef BP_MANIPULATION (spu_break_insn) spu_breakpoint;
1581 spu_memory_remove_breakpoint (struct gdbarch *gdbarch,
1582 struct bp_target_info *bp_tgt)
1584 /* We work around a problem in combined Cell/B.E. debugging here. Consider
1585 that in a combined application, we have some breakpoints inserted in SPU
1586 code, and now the application forks (on the PPU side). GDB common code
1587 will assume that the fork system call copied all breakpoints into the new
1588 process' address space, and that all those copies now need to be removed
1589 (see breakpoint.c:detach_breakpoints).
1591 While this is certainly true for PPU side breakpoints, it is not true
1592 for SPU side breakpoints. fork will clone the SPU context file
1593 descriptors, so that all the existing SPU contexts are in accessible
1594 in the new process. However, the contents of the SPU contexts themselves
1595 are *not* cloned. Therefore the effect of detach_breakpoints is to
1596 remove SPU breakpoints from the *original* SPU context's local store
1597 -- this is not the correct behaviour.
1599 The workaround is to check whether the PID we are asked to remove this
1600 breakpoint from (i.e. inferior_ptid.pid ()) is different from the
1601 PID of the current inferior (i.e. current_inferior ()->pid). This is only
1602 true in the context of detach_breakpoints. If so, we simply do nothing.
1603 [ Note that for the fork child process, it does not matter if breakpoints
1604 remain inserted, because those SPU contexts are not runnable anyway --
1605 the Linux kernel allows only the original process to invoke spu_run. */
1607 if (inferior_ptid.pid () != current_inferior ()->pid)
1610 return default_memory_remove_breakpoint (gdbarch, bp_tgt);
1614 /* Software single-stepping support. */
1616 static std::vector<CORE_ADDR>
1617 spu_software_single_step (struct regcache *regcache)
1619 struct gdbarch *gdbarch = regcache->arch ();
1620 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1621 CORE_ADDR pc, next_pc;
1626 std::vector<CORE_ADDR> next_pcs;
1628 pc = regcache_read_pc (regcache);
1630 if (target_read_memory (pc, buf, 4))
1631 throw_error (MEMORY_ERROR, _("Could not read instruction at %s."),
1632 paddress (gdbarch, pc));
1634 insn = extract_unsigned_integer (buf, 4, byte_order);
1636 /* Get local store limit. */
1637 if ((regcache_cooked_read_unsigned (regcache, SPU_LSLR_REGNUM, &lslr)
1638 != REG_VALID) || !lslr)
1639 lslr = (ULONGEST) -1;
1641 /* Next sequential instruction is at PC + 4, except if the current
1642 instruction is a PPE-assisted call, in which case it is at PC + 8.
1643 Wrap around LS limit to be on the safe side. */
1644 if ((insn & 0xffffff00) == 0x00002100)
1645 next_pc = (SPUADDR_ADDR (pc) + 8) & lslr;
1647 next_pc = (SPUADDR_ADDR (pc) + 4) & lslr;
1649 next_pcs.push_back (SPUADDR (SPUADDR_SPU (pc), next_pc));
1651 if (is_branch (insn, &offset, ®))
1653 CORE_ADDR target = offset;
1655 if (reg == SPU_PC_REGNUM)
1656 target += SPUADDR_ADDR (pc);
1659 regcache->raw_read_part (reg, 0, 4, buf);
1660 target += extract_unsigned_integer (buf, 4, byte_order) & -4;
1663 target = target & lslr;
1664 if (target != next_pc)
1665 next_pcs.push_back (SPUADDR (SPUADDR_SPU (pc), target));
1672 /* Longjmp support. */
1675 spu_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
1677 struct gdbarch *gdbarch = get_frame_arch (frame);
1678 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
1679 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1684 /* Jump buffer is pointed to by the argument register $r3. */
1685 if (!get_frame_register_bytes (frame, SPU_ARG1_REGNUM, 0, 4, buf,
1689 jb_addr = extract_unsigned_integer (buf, 4, byte_order);
1690 if (target_read_memory (SPUADDR (tdep->id, jb_addr), buf, 4))
1693 *pc = extract_unsigned_integer (buf, 4, byte_order);
1694 *pc = SPUADDR (tdep->id, *pc);
1701 struct spu_dis_asm_info : disassemble_info
1707 spu_dis_asm_print_address (bfd_vma addr, struct disassemble_info *info)
1709 struct spu_dis_asm_info *data = (struct spu_dis_asm_info *) info;
1710 gdb_disassembler *di
1711 = static_cast<gdb_disassembler *>(info->application_data);
1713 print_address (di->arch (), SPUADDR (data->id, addr),
1714 (struct ui_file *) info->stream);
1718 gdb_print_insn_spu (bfd_vma memaddr, struct disassemble_info *info)
1720 /* The opcodes disassembler does 18-bit address arithmetic. Make
1721 sure the SPU ID encoded in the high bits is added back when we
1722 call print_address. */
1723 struct spu_dis_asm_info spu_info;
1725 memcpy (&spu_info, info, sizeof (*info));
1726 spu_info.id = SPUADDR_SPU (memaddr);
1727 spu_info.print_address_func = spu_dis_asm_print_address;
1728 return default_print_insn (memaddr, &spu_info);
1732 /* Target overlays for the SPU overlay manager.
1734 See the documentation of simple_overlay_update for how the
1735 interface is supposed to work.
1737 Data structures used by the overlay manager:
1745 } _ovly_table[]; -- one entry per overlay section
1747 struct ovly_buf_table
1750 } _ovly_buf_table[]; -- one entry per overlay buffer
1752 _ovly_table should never change.
1754 Both tables are aligned to a 16-byte boundary, the symbols
1755 _ovly_table and _ovly_buf_table are of type STT_OBJECT and their
1756 size set to the size of the respective array. buf in _ovly_table is
1757 an index into _ovly_buf_table.
1759 mapped is an index into _ovly_table. Both the mapped and buf indices start
1760 from one to reference the first entry in their respective tables. */
1762 /* Using the per-objfile private data mechanism, we store for each
1763 objfile an array of "struct spu_overlay_table" structures, one
1764 for each obj_section of the objfile. This structure holds two
1765 fields, MAPPED_PTR and MAPPED_VAL. If MAPPED_PTR is zero, this
1766 is *not* an overlay section. If it is non-zero, it represents
1767 a target address. The overlay section is mapped iff the target
1768 integer at this location equals MAPPED_VAL. */
1770 static const struct objfile_data *spu_overlay_data;
1772 struct spu_overlay_table
1774 CORE_ADDR mapped_ptr;
1775 CORE_ADDR mapped_val;
1778 /* Retrieve the overlay table for OBJFILE. If not already cached, read
1779 the _ovly_table data structure from the target and initialize the
1780 spu_overlay_table data structure from it. */
1781 static struct spu_overlay_table *
1782 spu_get_overlay_table (struct objfile *objfile)
1784 enum bfd_endian byte_order = bfd_big_endian (objfile->obfd)?
1785 BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
1786 struct bound_minimal_symbol ovly_table_msym, ovly_buf_table_msym;
1787 CORE_ADDR ovly_table_base, ovly_buf_table_base;
1788 unsigned ovly_table_size, ovly_buf_table_size;
1789 struct spu_overlay_table *tbl;
1790 struct obj_section *osect;
1791 gdb_byte *ovly_table;
1794 tbl = (struct spu_overlay_table *) objfile_data (objfile, spu_overlay_data);
1798 ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, objfile);
1799 if (!ovly_table_msym.minsym)
1802 ovly_buf_table_msym = lookup_minimal_symbol ("_ovly_buf_table",
1804 if (!ovly_buf_table_msym.minsym)
1807 ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym);
1808 ovly_table_size = MSYMBOL_SIZE (ovly_table_msym.minsym);
1810 ovly_buf_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_buf_table_msym);
1811 ovly_buf_table_size = MSYMBOL_SIZE (ovly_buf_table_msym.minsym);
1813 ovly_table = (gdb_byte *) xmalloc (ovly_table_size);
1814 read_memory (ovly_table_base, ovly_table, ovly_table_size);
1816 tbl = OBSTACK_CALLOC (&objfile->objfile_obstack,
1817 objfile->sections_end - objfile->sections,
1818 struct spu_overlay_table);
1820 for (i = 0; i < ovly_table_size / 16; i++)
1822 CORE_ADDR vma = extract_unsigned_integer (ovly_table + 16*i + 0,
1824 /* Note that this skips the "size" entry, which is at offset
1826 CORE_ADDR pos = extract_unsigned_integer (ovly_table + 16*i + 8,
1828 CORE_ADDR buf = extract_unsigned_integer (ovly_table + 16*i + 12,
1831 if (buf == 0 || (buf - 1) * 4 >= ovly_buf_table_size)
1834 ALL_OBJFILE_OSECTIONS (objfile, osect)
1835 if (vma == bfd_section_vma (objfile->obfd, osect->the_bfd_section)
1836 && pos == osect->the_bfd_section->filepos)
1838 int ndx = osect - objfile->sections;
1839 tbl[ndx].mapped_ptr = ovly_buf_table_base + (buf - 1) * 4;
1840 tbl[ndx].mapped_val = i + 1;
1846 set_objfile_data (objfile, spu_overlay_data, tbl);
1850 /* Read _ovly_buf_table entry from the target to dermine whether
1851 OSECT is currently mapped, and update the mapped state. */
1853 spu_overlay_update_osect (struct obj_section *osect)
1855 enum bfd_endian byte_order = bfd_big_endian (osect->objfile->obfd)?
1856 BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
1857 struct spu_overlay_table *ovly_table;
1860 ovly_table = spu_get_overlay_table (osect->objfile);
1864 ovly_table += osect - osect->objfile->sections;
1865 if (ovly_table->mapped_ptr == 0)
1868 id = SPUADDR_SPU (obj_section_addr (osect));
1869 val = read_memory_unsigned_integer (SPUADDR (id, ovly_table->mapped_ptr),
1871 osect->ovly_mapped = (val == ovly_table->mapped_val);
1874 /* If OSECT is NULL, then update all sections' mapped state.
1875 If OSECT is non-NULL, then update only OSECT's mapped state. */
1877 spu_overlay_update (struct obj_section *osect)
1879 /* Just one section. */
1881 spu_overlay_update_osect (osect);
1886 struct objfile *objfile;
1888 ALL_OBJSECTIONS (objfile, osect)
1889 if (section_is_overlay (osect))
1890 spu_overlay_update_osect (osect);
1894 /* Whenever a new objfile is loaded, read the target's _ovly_table.
1895 If there is one, go through all sections and make sure for non-
1896 overlay sections LMA equals VMA, while for overlay sections LMA
1897 is larger than SPU_OVERLAY_LMA. */
1899 spu_overlay_new_objfile (struct objfile *objfile)
1901 struct spu_overlay_table *ovly_table;
1902 struct obj_section *osect;
1904 /* If we've already touched this file, do nothing. */
1905 if (!objfile || objfile_data (objfile, spu_overlay_data) != NULL)
1908 /* Consider only SPU objfiles. */
1909 if (bfd_get_arch (objfile->obfd) != bfd_arch_spu)
1912 /* Check if this objfile has overlays. */
1913 ovly_table = spu_get_overlay_table (objfile);
1917 /* Now go and fiddle with all the LMAs. */
1918 ALL_OBJFILE_OSECTIONS (objfile, osect)
1920 asection *bsect = osect->the_bfd_section;
1921 int ndx = osect - objfile->sections;
1923 if (ovly_table[ndx].mapped_ptr == 0)
1924 bfd_section_lma (obfd, bsect) = bfd_section_vma (obfd, bsect);
1926 bfd_section_lma (obfd, bsect) = SPU_OVERLAY_LMA + bsect->filepos;
1931 /* Insert temporary breakpoint on "main" function of newly loaded
1932 SPE context OBJFILE. */
1934 spu_catch_start (struct objfile *objfile)
1936 struct bound_minimal_symbol minsym;
1937 struct compunit_symtab *cust;
1940 /* Do this only if requested by "set spu stop-on-load on". */
1941 if (!spu_stop_on_load_p)
1944 /* Consider only SPU objfiles. */
1945 if (!objfile || bfd_get_arch (objfile->obfd) != bfd_arch_spu)
1948 /* The main objfile is handled differently. */
1949 if (objfile == symfile_objfile)
1952 /* There can be multiple symbols named "main". Search for the
1953 "main" in *this* objfile. */
1954 minsym = lookup_minimal_symbol ("main", NULL, objfile);
1958 /* If we have debugging information, try to use it -- this
1959 will allow us to properly skip the prologue. */
1960 pc = BMSYMBOL_VALUE_ADDRESS (minsym);
1962 = find_pc_sect_compunit_symtab (pc, MSYMBOL_OBJ_SECTION (minsym.objfile,
1966 const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (cust);
1967 struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
1969 struct symtab_and_line sal;
1971 sym = block_lookup_symbol (block, "main",
1972 symbol_name_match_type::SEARCH_NAME,
1976 fixup_symbol_section (sym, objfile);
1977 sal = find_function_start_sal (sym, 1);
1982 /* Use a numerical address for the set_breakpoint command to avoid having
1983 the breakpoint re-set incorrectly. */
1984 event_location_up location = new_address_location (pc, NULL, 0);
1985 create_breakpoint (get_objfile_arch (objfile), location.get (),
1986 NULL /* cond_string */, -1 /* thread */,
1987 NULL /* extra_string */,
1988 0 /* parse_condition_and_thread */, 1 /* tempflag */,
1989 bp_breakpoint /* type_wanted */,
1990 0 /* ignore_count */,
1991 AUTO_BOOLEAN_FALSE /* pending_break_support */,
1992 &bkpt_breakpoint_ops /* ops */, 0 /* from_tty */,
1993 1 /* enabled */, 0 /* internal */, 0);
1997 /* Look up OBJFILE loaded into FRAME's SPU context. */
1998 static struct objfile *
1999 spu_objfile_from_frame (struct frame_info *frame)
2001 struct gdbarch *gdbarch = get_frame_arch (frame);
2002 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
2004 if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
2007 for (objfile *obj : all_objfiles (current_program_space))
2009 if (obj->sections != obj->sections_end
2010 && SPUADDR_SPU (obj_section_addr (obj->sections)) == tdep->id)
2017 /* Flush cache for ea pointer access if available. */
2019 flush_ea_cache (void)
2021 struct bound_minimal_symbol msymbol;
2022 struct objfile *obj;
2024 if (!has_stack_frames ())
2027 obj = spu_objfile_from_frame (get_current_frame ());
2031 /* Lookup inferior function __cache_flush. */
2032 msymbol = lookup_minimal_symbol ("__cache_flush", NULL, obj);
2033 if (msymbol.minsym != NULL)
2038 type = objfile_type (obj)->builtin_void;
2039 type = lookup_function_type (type);
2040 type = lookup_pointer_type (type);
2041 addr = BMSYMBOL_VALUE_ADDRESS (msymbol);
2043 call_function_by_hand (value_from_pointer (type, addr), NULL, {});
2047 /* This handler is called when the inferior has stopped. If it is stopped in
2048 SPU architecture then flush the ea cache if used. */
2050 spu_attach_normal_stop (struct bpstats *bs, int print_frame)
2052 if (!spu_auto_flush_cache_p)
2055 /* Temporarily reset spu_auto_flush_cache_p to avoid recursively
2056 re-entering this function when __cache_flush stops. */
2057 spu_auto_flush_cache_p = 0;
2059 spu_auto_flush_cache_p = 1;
2063 /* "info spu" commands. */
2066 info_spu_event_command (const char *args, int from_tty)
2068 struct frame_info *frame = get_selected_frame (NULL);
2069 ULONGEST event_status = 0;
2070 ULONGEST event_mask = 0;
2076 if (gdbarch_bfd_arch_info (get_frame_arch (frame))->arch != bfd_arch_spu)
2077 error (_("\"info spu\" is only supported on the SPU architecture."));
2079 id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
2081 xsnprintf (annex, sizeof annex, "%d/event_status", id);
2082 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2083 buf, 0, (sizeof (buf) - 1));
2085 error (_("Could not read event_status."));
2087 event_status = strtoulst ((char *) buf, NULL, 16);
2089 xsnprintf (annex, sizeof annex, "%d/event_mask", id);
2090 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2091 buf, 0, (sizeof (buf) - 1));
2093 error (_("Could not read event_mask."));
2095 event_mask = strtoulst ((char *) buf, NULL, 16);
2097 ui_out_emit_tuple tuple_emitter (current_uiout, "SPUInfoEvent");
2099 current_uiout->text (_("Event Status "));
2100 current_uiout->field_fmt ("event_status", "0x%s", phex (event_status, 4));
2101 current_uiout->text ("\n");
2102 current_uiout->text (_("Event Mask "));
2103 current_uiout->field_fmt ("event_mask", "0x%s", phex (event_mask, 4));
2104 current_uiout->text ("\n");
2108 info_spu_signal_command (const char *args, int from_tty)
2110 struct frame_info *frame = get_selected_frame (NULL);
2111 struct gdbarch *gdbarch = get_frame_arch (frame);
2112 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
2113 ULONGEST signal1 = 0;
2114 ULONGEST signal1_type = 0;
2115 int signal1_pending = 0;
2116 ULONGEST signal2 = 0;
2117 ULONGEST signal2_type = 0;
2118 int signal2_pending = 0;
2124 if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
2125 error (_("\"info spu\" is only supported on the SPU architecture."));
2127 id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
2129 xsnprintf (annex, sizeof annex, "%d/signal1", id);
2130 len = target_read (current_top_target (), TARGET_OBJECT_SPU,
2133 error (_("Could not read signal1."));
2136 signal1 = extract_unsigned_integer (buf, 4, byte_order);
2137 signal1_pending = 1;
2140 xsnprintf (annex, sizeof annex, "%d/signal1_type", id);
2141 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2142 buf, 0, (sizeof (buf) - 1));
2144 error (_("Could not read signal1_type."));
2146 signal1_type = strtoulst ((char *) buf, NULL, 16);
2148 xsnprintf (annex, sizeof annex, "%d/signal2", id);
2149 len = target_read (current_top_target (), TARGET_OBJECT_SPU,
2152 error (_("Could not read signal2."));
2155 signal2 = extract_unsigned_integer (buf, 4, byte_order);
2156 signal2_pending = 1;
2159 xsnprintf (annex, sizeof annex, "%d/signal2_type", id);
2160 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2161 buf, 0, (sizeof (buf) - 1));
2163 error (_("Could not read signal2_type."));
2165 signal2_type = strtoulst ((char *) buf, NULL, 16);
2167 ui_out_emit_tuple tuple_emitter (current_uiout, "SPUInfoSignal");
2169 if (current_uiout->is_mi_like_p ())
2171 current_uiout->field_int ("signal1_pending", signal1_pending);
2172 current_uiout->field_fmt ("signal1", "0x%s", phex_nz (signal1, 4));
2173 current_uiout->field_int ("signal1_type", signal1_type);
2174 current_uiout->field_int ("signal2_pending", signal2_pending);
2175 current_uiout->field_fmt ("signal2", "0x%s", phex_nz (signal2, 4));
2176 current_uiout->field_int ("signal2_type", signal2_type);
2180 if (signal1_pending)
2181 printf_filtered (_("Signal 1 control word 0x%s "), phex (signal1, 4));
2183 printf_filtered (_("Signal 1 not pending "));
2186 printf_filtered (_("(Type Or)\n"));
2188 printf_filtered (_("(Type Overwrite)\n"));
2190 if (signal2_pending)
2191 printf_filtered (_("Signal 2 control word 0x%s "), phex (signal2, 4));
2193 printf_filtered (_("Signal 2 not pending "));
2196 printf_filtered (_("(Type Or)\n"));
2198 printf_filtered (_("(Type Overwrite)\n"));
2203 info_spu_mailbox_list (gdb_byte *buf, int nr, enum bfd_endian byte_order,
2204 const char *field, const char *msg)
2211 ui_out_emit_table table_emitter (current_uiout, 1, nr, "mbox");
2213 current_uiout->table_header (32, ui_left, field, msg);
2214 current_uiout->table_body ();
2216 for (i = 0; i < nr; i++)
2220 ui_out_emit_tuple tuple_emitter (current_uiout, "mbox");
2221 val = extract_unsigned_integer (buf + 4*i, 4, byte_order);
2222 current_uiout->field_fmt (field, "0x%s", phex (val, 4));
2225 current_uiout->text ("\n");
2230 info_spu_mailbox_command (const char *args, int from_tty)
2232 struct frame_info *frame = get_selected_frame (NULL);
2233 struct gdbarch *gdbarch = get_frame_arch (frame);
2234 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
2240 if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
2241 error (_("\"info spu\" is only supported on the SPU architecture."));
2243 id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
2245 ui_out_emit_tuple tuple_emitter (current_uiout, "SPUInfoMailbox");
2247 xsnprintf (annex, sizeof annex, "%d/mbox_info", id);
2248 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2249 buf, 0, sizeof buf);
2251 error (_("Could not read mbox_info."));
2253 info_spu_mailbox_list (buf, len / 4, byte_order,
2254 "mbox", "SPU Outbound Mailbox");
2256 xsnprintf (annex, sizeof annex, "%d/ibox_info", id);
2257 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2258 buf, 0, sizeof buf);
2260 error (_("Could not read ibox_info."));
2262 info_spu_mailbox_list (buf, len / 4, byte_order,
2263 "ibox", "SPU Outbound Interrupt Mailbox");
2265 xsnprintf (annex, sizeof annex, "%d/wbox_info", id);
2266 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2267 buf, 0, sizeof buf);
2269 error (_("Could not read wbox_info."));
2271 info_spu_mailbox_list (buf, len / 4, byte_order,
2272 "wbox", "SPU Inbound Mailbox");
2276 spu_mfc_get_bitfield (ULONGEST word, int first, int last)
2278 ULONGEST mask = ~(~(ULONGEST)0 << (last - first + 1));
2279 return (word >> (63 - last)) & mask;
2283 info_spu_dma_cmdlist (gdb_byte *buf, int nr, enum bfd_endian byte_order)
2285 static const char *spu_mfc_opcode[256] =
2287 /* 00 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2288 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2289 /* 10 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2290 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2291 /* 20 */ "put", "putb", "putf", NULL, "putl", "putlb", "putlf", NULL,
2292 "puts", "putbs", "putfs", NULL, NULL, NULL, NULL, NULL,
2293 /* 30 */ "putr", "putrb", "putrf", NULL, "putrl", "putrlb", "putrlf", NULL,
2294 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2295 /* 40 */ "get", "getb", "getf", NULL, "getl", "getlb", "getlf", NULL,
2296 "gets", "getbs", "getfs", NULL, NULL, NULL, NULL, NULL,
2297 /* 50 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2298 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2299 /* 60 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2300 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2301 /* 70 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2302 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2303 /* 80 */ "sdcrt", "sdcrtst", NULL, NULL, NULL, NULL, NULL, NULL,
2304 NULL, "sdcrz", NULL, NULL, NULL, "sdcrst", NULL, "sdcrf",
2305 /* 90 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2306 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2307 /* a0 */ "sndsig", "sndsigb", "sndsigf", NULL, NULL, NULL, NULL, NULL,
2308 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2309 /* b0 */ "putlluc", NULL, NULL, NULL, "putllc", NULL, NULL, NULL,
2310 "putqlluc", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2311 /* c0 */ "barrier", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2312 "mfceieio", NULL, NULL, NULL, "mfcsync", NULL, NULL, NULL,
2313 /* d0 */ "getllar", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2314 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2315 /* e0 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2316 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2317 /* f0 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2318 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
2321 int *seq = XALLOCAVEC (int, nr);
2326 /* Determine sequence in which to display (valid) entries. */
2327 for (i = 0; i < nr; i++)
2329 /* Search for the first valid entry all of whose
2330 dependencies are met. */
2331 for (j = 0; j < nr; j++)
2333 ULONGEST mfc_cq_dw3;
2334 ULONGEST dependencies;
2336 if (done & (1 << (nr - 1 - j)))
2340 = extract_unsigned_integer (buf + 32*j + 24,8, byte_order);
2341 if (!spu_mfc_get_bitfield (mfc_cq_dw3, 16, 16))
2344 dependencies = spu_mfc_get_bitfield (mfc_cq_dw3, 0, nr - 1);
2345 if ((dependencies & done) != dependencies)
2349 done |= 1 << (nr - 1 - j);
2360 ui_out_emit_table table_emitter (current_uiout, 10, nr, "dma_cmd");
2362 current_uiout->table_header (7, ui_left, "opcode", "Opcode");
2363 current_uiout->table_header (3, ui_left, "tag", "Tag");
2364 current_uiout->table_header (3, ui_left, "tid", "TId");
2365 current_uiout->table_header (3, ui_left, "rid", "RId");
2366 current_uiout->table_header (18, ui_left, "ea", "EA");
2367 current_uiout->table_header (7, ui_left, "lsa", "LSA");
2368 current_uiout->table_header (7, ui_left, "size", "Size");
2369 current_uiout->table_header (7, ui_left, "lstaddr", "LstAddr");
2370 current_uiout->table_header (7, ui_left, "lstsize", "LstSize");
2371 current_uiout->table_header (1, ui_left, "error_p", "E");
2373 current_uiout->table_body ();
2375 for (i = 0; i < nr; i++)
2377 ULONGEST mfc_cq_dw0;
2378 ULONGEST mfc_cq_dw1;
2379 ULONGEST mfc_cq_dw2;
2380 int mfc_cmd_opcode, mfc_cmd_tag, rclass_id, tclass_id;
2381 int list_lsa, list_size, mfc_lsa, mfc_size;
2383 int list_valid_p, qw_valid_p, ea_valid_p, cmd_error_p;
2385 /* Decode contents of MFC Command Queue Context Save/Restore Registers.
2386 See "Cell Broadband Engine Registers V1.3", section 3.3.2.1. */
2389 = extract_unsigned_integer (buf + 32*seq[i], 8, byte_order);
2391 = extract_unsigned_integer (buf + 32*seq[i] + 8, 8, byte_order);
2393 = extract_unsigned_integer (buf + 32*seq[i] + 16, 8, byte_order);
2395 list_lsa = spu_mfc_get_bitfield (mfc_cq_dw0, 0, 14);
2396 list_size = spu_mfc_get_bitfield (mfc_cq_dw0, 15, 26);
2397 mfc_cmd_opcode = spu_mfc_get_bitfield (mfc_cq_dw0, 27, 34);
2398 mfc_cmd_tag = spu_mfc_get_bitfield (mfc_cq_dw0, 35, 39);
2399 list_valid_p = spu_mfc_get_bitfield (mfc_cq_dw0, 40, 40);
2400 rclass_id = spu_mfc_get_bitfield (mfc_cq_dw0, 41, 43);
2401 tclass_id = spu_mfc_get_bitfield (mfc_cq_dw0, 44, 46);
2403 mfc_ea = spu_mfc_get_bitfield (mfc_cq_dw1, 0, 51) << 12
2404 | spu_mfc_get_bitfield (mfc_cq_dw2, 25, 36);
2406 mfc_lsa = spu_mfc_get_bitfield (mfc_cq_dw2, 0, 13);
2407 mfc_size = spu_mfc_get_bitfield (mfc_cq_dw2, 14, 24);
2408 qw_valid_p = spu_mfc_get_bitfield (mfc_cq_dw2, 38, 38);
2409 ea_valid_p = spu_mfc_get_bitfield (mfc_cq_dw2, 39, 39);
2410 cmd_error_p = spu_mfc_get_bitfield (mfc_cq_dw2, 40, 40);
2413 ui_out_emit_tuple tuple_emitter (current_uiout, "cmd");
2415 if (spu_mfc_opcode[mfc_cmd_opcode])
2416 current_uiout->field_string ("opcode", spu_mfc_opcode[mfc_cmd_opcode]);
2418 current_uiout->field_int ("opcode", mfc_cmd_opcode);
2420 current_uiout->field_int ("tag", mfc_cmd_tag);
2421 current_uiout->field_int ("tid", tclass_id);
2422 current_uiout->field_int ("rid", rclass_id);
2425 current_uiout->field_fmt ("ea", "0x%s", phex (mfc_ea, 8));
2427 current_uiout->field_skip ("ea");
2429 current_uiout->field_fmt ("lsa", "0x%05x", mfc_lsa << 4);
2431 current_uiout->field_fmt ("size", "0x%05x", mfc_size << 4);
2433 current_uiout->field_fmt ("size", "0x%05x", mfc_size);
2437 current_uiout->field_fmt ("lstaddr", "0x%05x", list_lsa << 3);
2438 current_uiout->field_fmt ("lstsize", "0x%05x", list_size << 3);
2442 current_uiout->field_skip ("lstaddr");
2443 current_uiout->field_skip ("lstsize");
2447 current_uiout->field_string ("error_p", "*");
2449 current_uiout->field_skip ("error_p");
2452 current_uiout->text ("\n");
2457 info_spu_dma_command (const char *args, int from_tty)
2459 struct frame_info *frame = get_selected_frame (NULL);
2460 struct gdbarch *gdbarch = get_frame_arch (frame);
2461 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
2462 ULONGEST dma_info_type;
2463 ULONGEST dma_info_mask;
2464 ULONGEST dma_info_status;
2465 ULONGEST dma_info_stall_and_notify;
2466 ULONGEST dma_info_atomic_command_status;
2472 if (gdbarch_bfd_arch_info (get_frame_arch (frame))->arch != bfd_arch_spu)
2473 error (_("\"info spu\" is only supported on the SPU architecture."));
2475 id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
2477 xsnprintf (annex, sizeof annex, "%d/dma_info", id);
2478 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2479 buf, 0, 40 + 16 * 32);
2481 error (_("Could not read dma_info."));
2484 = extract_unsigned_integer (buf, 8, byte_order);
2486 = extract_unsigned_integer (buf + 8, 8, byte_order);
2488 = extract_unsigned_integer (buf + 16, 8, byte_order);
2489 dma_info_stall_and_notify
2490 = extract_unsigned_integer (buf + 24, 8, byte_order);
2491 dma_info_atomic_command_status
2492 = extract_unsigned_integer (buf + 32, 8, byte_order);
2494 ui_out_emit_tuple tuple_emitter (current_uiout, "SPUInfoDMA");
2496 if (current_uiout->is_mi_like_p ())
2498 current_uiout->field_fmt ("dma_info_type", "0x%s",
2499 phex_nz (dma_info_type, 4));
2500 current_uiout->field_fmt ("dma_info_mask", "0x%s",
2501 phex_nz (dma_info_mask, 4));
2502 current_uiout->field_fmt ("dma_info_status", "0x%s",
2503 phex_nz (dma_info_status, 4));
2504 current_uiout->field_fmt ("dma_info_stall_and_notify", "0x%s",
2505 phex_nz (dma_info_stall_and_notify, 4));
2506 current_uiout->field_fmt ("dma_info_atomic_command_status", "0x%s",
2507 phex_nz (dma_info_atomic_command_status, 4));
2511 const char *query_msg = _("no query pending");
2513 if (dma_info_type & 4)
2514 switch (dma_info_type & 3)
2516 case 1: query_msg = _("'any' query pending"); break;
2517 case 2: query_msg = _("'all' query pending"); break;
2518 default: query_msg = _("undefined query type"); break;
2521 printf_filtered (_("Tag-Group Status 0x%s\n"),
2522 phex (dma_info_status, 4));
2523 printf_filtered (_("Tag-Group Mask 0x%s (%s)\n"),
2524 phex (dma_info_mask, 4), query_msg);
2525 printf_filtered (_("Stall-and-Notify 0x%s\n"),
2526 phex (dma_info_stall_and_notify, 4));
2527 printf_filtered (_("Atomic Cmd Status 0x%s\n"),
2528 phex (dma_info_atomic_command_status, 4));
2529 printf_filtered ("\n");
2532 info_spu_dma_cmdlist (buf + 40, 16, byte_order);
2536 info_spu_proxydma_command (const char *args, int from_tty)
2538 struct frame_info *frame = get_selected_frame (NULL);
2539 struct gdbarch *gdbarch = get_frame_arch (frame);
2540 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
2541 ULONGEST dma_info_type;
2542 ULONGEST dma_info_mask;
2543 ULONGEST dma_info_status;
2549 if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
2550 error (_("\"info spu\" is only supported on the SPU architecture."));
2552 id = get_frame_register_unsigned (frame, SPU_ID_REGNUM);
2554 xsnprintf (annex, sizeof annex, "%d/proxydma_info", id);
2555 len = target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
2556 buf, 0, 24 + 8 * 32);
2558 error (_("Could not read proxydma_info."));
2560 dma_info_type = extract_unsigned_integer (buf, 8, byte_order);
2561 dma_info_mask = extract_unsigned_integer (buf + 8, 8, byte_order);
2562 dma_info_status = extract_unsigned_integer (buf + 16, 8, byte_order);
2564 ui_out_emit_tuple tuple_emitter (current_uiout, "SPUInfoProxyDMA");
2566 if (current_uiout->is_mi_like_p ())
2568 current_uiout->field_fmt ("proxydma_info_type", "0x%s",
2569 phex_nz (dma_info_type, 4));
2570 current_uiout->field_fmt ("proxydma_info_mask", "0x%s",
2571 phex_nz (dma_info_mask, 4));
2572 current_uiout->field_fmt ("proxydma_info_status", "0x%s",
2573 phex_nz (dma_info_status, 4));
2577 const char *query_msg;
2579 switch (dma_info_type & 3)
2581 case 0: query_msg = _("no query pending"); break;
2582 case 1: query_msg = _("'any' query pending"); break;
2583 case 2: query_msg = _("'all' query pending"); break;
2584 default: query_msg = _("undefined query type"); break;
2587 printf_filtered (_("Tag-Group Status 0x%s\n"),
2588 phex (dma_info_status, 4));
2589 printf_filtered (_("Tag-Group Mask 0x%s (%s)\n"),
2590 phex (dma_info_mask, 4), query_msg);
2591 printf_filtered ("\n");
2594 info_spu_dma_cmdlist (buf + 24, 8, byte_order);
2598 info_spu_command (const char *args, int from_tty)
2600 printf_unfiltered (_("\"info spu\" must be followed by "
2601 "the name of an SPU facility.\n"));
2602 help_list (infospucmdlist, "info spu ", all_commands, gdb_stdout);
2606 /* Root of all "set spu "/"show spu " commands. */
2609 show_spu_command (const char *args, int from_tty)
2611 help_list (showspucmdlist, "show spu ", all_commands, gdb_stdout);
2615 set_spu_command (const char *args, int from_tty)
2617 help_list (setspucmdlist, "set spu ", all_commands, gdb_stdout);
2621 show_spu_stop_on_load (struct ui_file *file, int from_tty,
2622 struct cmd_list_element *c, const char *value)
2624 fprintf_filtered (file, _("Stopping for new SPE threads is %s.\n"),
2629 show_spu_auto_flush_cache (struct ui_file *file, int from_tty,
2630 struct cmd_list_element *c, const char *value)
2632 fprintf_filtered (file, _("Automatic software-cache flush is %s.\n"),
2637 /* Set up gdbarch struct. */
2639 static struct gdbarch *
2640 spu_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
2642 struct gdbarch *gdbarch;
2643 struct gdbarch_tdep *tdep;
2646 /* Which spufs ID was requested as address space? */
2649 /* For objfile architectures of SPU solibs, decode the ID from the name.
2650 This assumes the filename convention employed by solib-spu.c. */
2653 const char *name = strrchr (info.abfd->filename, '@');
2655 sscanf (name, "@0x%*x <%d>", &id);
2658 /* Find a candidate among extant architectures. */
2659 for (arches = gdbarch_list_lookup_by_info (arches, &info);
2661 arches = gdbarch_list_lookup_by_info (arches->next, &info))
2663 tdep = gdbarch_tdep (arches->gdbarch);
2664 if (tdep && tdep->id == id)
2665 return arches->gdbarch;
2668 /* None found, so create a new architecture. */
2669 tdep = XCNEW (struct gdbarch_tdep);
2671 gdbarch = gdbarch_alloc (&info, tdep);
2674 set_gdbarch_print_insn (gdbarch, gdb_print_insn_spu);
2677 set_gdbarch_num_regs (gdbarch, SPU_NUM_REGS);
2678 set_gdbarch_num_pseudo_regs (gdbarch, SPU_NUM_PSEUDO_REGS);
2679 set_gdbarch_sp_regnum (gdbarch, SPU_SP_REGNUM);
2680 set_gdbarch_pc_regnum (gdbarch, SPU_PC_REGNUM);
2681 set_gdbarch_read_pc (gdbarch, spu_read_pc);
2682 set_gdbarch_write_pc (gdbarch, spu_write_pc);
2683 set_gdbarch_register_name (gdbarch, spu_register_name);
2684 set_gdbarch_register_type (gdbarch, spu_register_type);
2685 set_gdbarch_pseudo_register_read (gdbarch, spu_pseudo_register_read);
2686 set_gdbarch_pseudo_register_write (gdbarch, spu_pseudo_register_write);
2687 set_gdbarch_value_from_register (gdbarch, spu_value_from_register);
2688 set_gdbarch_register_reggroup_p (gdbarch, spu_register_reggroup_p);
2689 set_gdbarch_dwarf2_reg_to_regnum (gdbarch, spu_dwarf_reg_to_regnum);
2690 set_gdbarch_ax_pseudo_register_collect
2691 (gdbarch, spu_ax_pseudo_register_collect);
2692 set_gdbarch_ax_pseudo_register_push_stack
2693 (gdbarch, spu_ax_pseudo_register_push_stack);
2696 set_gdbarch_char_signed (gdbarch, 0);
2697 set_gdbarch_ptr_bit (gdbarch, 32);
2698 set_gdbarch_addr_bit (gdbarch, 32);
2699 set_gdbarch_short_bit (gdbarch, 16);
2700 set_gdbarch_int_bit (gdbarch, 32);
2701 set_gdbarch_long_bit (gdbarch, 32);
2702 set_gdbarch_long_long_bit (gdbarch, 64);
2703 set_gdbarch_float_bit (gdbarch, 32);
2704 set_gdbarch_double_bit (gdbarch, 64);
2705 set_gdbarch_long_double_bit (gdbarch, 64);
2706 set_gdbarch_float_format (gdbarch, floatformats_ieee_single);
2707 set_gdbarch_double_format (gdbarch, floatformats_ieee_double);
2708 set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
2710 /* Address handling. */
2711 set_gdbarch_address_to_pointer (gdbarch, spu_address_to_pointer);
2712 set_gdbarch_pointer_to_address (gdbarch, spu_pointer_to_address);
2713 set_gdbarch_integer_to_address (gdbarch, spu_integer_to_address);
2714 set_gdbarch_address_class_type_flags (gdbarch, spu_address_class_type_flags);
2715 set_gdbarch_address_class_type_flags_to_name
2716 (gdbarch, spu_address_class_type_flags_to_name);
2717 set_gdbarch_address_class_name_to_type_flags
2718 (gdbarch, spu_address_class_name_to_type_flags);
2720 /* We need to support more than "addr_bit" significant address bits
2721 in order to support SPUADDR_ADDR encoded values. */
2722 set_gdbarch_significant_addr_bit (gdbarch, 64);
2724 /* Inferior function calls. */
2725 set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
2726 set_gdbarch_frame_align (gdbarch, spu_frame_align);
2727 set_gdbarch_frame_red_zone_size (gdbarch, 2000);
2728 set_gdbarch_push_dummy_code (gdbarch, spu_push_dummy_code);
2729 set_gdbarch_push_dummy_call (gdbarch, spu_push_dummy_call);
2730 set_gdbarch_dummy_id (gdbarch, spu_dummy_id);
2731 set_gdbarch_return_value (gdbarch, spu_return_value);
2733 /* Frame handling. */
2734 set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
2735 dwarf2_append_unwinders (gdbarch);
2736 frame_unwind_append_unwinder (gdbarch, &spu_frame_unwind);
2737 frame_base_set_default (gdbarch, &spu_frame_base);
2738 set_gdbarch_unwind_pc (gdbarch, spu_unwind_pc);
2739 set_gdbarch_unwind_sp (gdbarch, spu_unwind_sp);
2740 set_gdbarch_virtual_frame_pointer (gdbarch, spu_virtual_frame_pointer);
2741 set_gdbarch_frame_args_skip (gdbarch, 0);
2742 set_gdbarch_skip_prologue (gdbarch, spu_skip_prologue);
2743 set_gdbarch_stack_frame_destroyed_p (gdbarch, spu_stack_frame_destroyed_p);
2745 /* Cell/B.E. cross-architecture unwinder support. */
2746 frame_unwind_prepend_unwinder (gdbarch, &spu2ppu_unwind);
2749 set_gdbarch_decr_pc_after_break (gdbarch, 4);
2750 set_gdbarch_breakpoint_kind_from_pc (gdbarch, spu_breakpoint::kind_from_pc);
2751 set_gdbarch_sw_breakpoint_from_kind (gdbarch, spu_breakpoint::bp_from_kind);
2752 set_gdbarch_memory_remove_breakpoint (gdbarch, spu_memory_remove_breakpoint);
2753 set_gdbarch_software_single_step (gdbarch, spu_software_single_step);
2754 set_gdbarch_get_longjmp_target (gdbarch, spu_get_longjmp_target);
2757 set_gdbarch_overlay_update (gdbarch, spu_overlay_update);
2763 _initialize_spu_tdep (void)
2765 register_gdbarch_init (bfd_arch_spu, spu_gdbarch_init);
2767 /* Add ourselves to objfile event chain. */
2768 gdb::observers::new_objfile.attach (spu_overlay_new_objfile);
2769 spu_overlay_data = register_objfile_data ();
2771 /* Install spu stop-on-load handler. */
2772 gdb::observers::new_objfile.attach (spu_catch_start);
2774 /* Add ourselves to normal_stop event chain. */
2775 gdb::observers::normal_stop.attach (spu_attach_normal_stop);
2777 /* Add root prefix command for all "set spu"/"show spu" commands. */
2778 add_prefix_cmd ("spu", no_class, set_spu_command,
2779 _("Various SPU specific commands."),
2780 &setspucmdlist, "set spu ", 0, &setlist);
2781 add_prefix_cmd ("spu", no_class, show_spu_command,
2782 _("Various SPU specific commands."),
2783 &showspucmdlist, "show spu ", 0, &showlist);
2785 /* Toggle whether or not to add a temporary breakpoint at the "main"
2786 function of new SPE contexts. */
2787 add_setshow_boolean_cmd ("stop-on-load", class_support,
2788 &spu_stop_on_load_p, _("\
2789 Set whether to stop for new SPE threads."),
2791 Show whether to stop for new SPE threads."),
2793 Use \"on\" to give control to the user when a new SPE thread\n\
2794 enters its \"main\" function.\n\
2795 Use \"off\" to disable stopping for new SPE threads."),
2797 show_spu_stop_on_load,
2798 &setspucmdlist, &showspucmdlist);
2800 /* Toggle whether or not to automatically flush the software-managed
2801 cache whenever SPE execution stops. */
2802 add_setshow_boolean_cmd ("auto-flush-cache", class_support,
2803 &spu_auto_flush_cache_p, _("\
2804 Set whether to automatically flush the software-managed cache."),
2806 Show whether to automatically flush the software-managed cache."),
2808 Use \"on\" to automatically flush the software-managed cache\n\
2809 whenever SPE execution stops.\n\
2810 Use \"off\" to never automatically flush the software-managed cache."),
2812 show_spu_auto_flush_cache,
2813 &setspucmdlist, &showspucmdlist);
2815 /* Add root prefix command for all "info spu" commands. */
2816 add_prefix_cmd ("spu", class_info, info_spu_command,
2817 _("Various SPU specific commands."),
2818 &infospucmdlist, "info spu ", 0, &infolist);
2820 /* Add various "info spu" commands. */
2821 add_cmd ("event", class_info, info_spu_event_command,
2822 _("Display SPU event facility status.\n"),
2824 add_cmd ("signal", class_info, info_spu_signal_command,
2825 _("Display SPU signal notification facility status.\n"),
2827 add_cmd ("mailbox", class_info, info_spu_mailbox_command,
2828 _("Display SPU mailbox facility status.\n"),
2830 add_cmd ("dma", class_info, info_spu_dma_command,
2831 _("Display MFC DMA status.\n"),
2833 add_cmd ("proxydma", class_info, info_spu_proxydma_command,
2834 _("Display MFC Proxy-DMA status.\n"),