1 /* Target-dependent code for Renesas Super-H, for GDB.
3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 2003, 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 Contributed by Steve Chamberlain
28 #include "frame-base.h"
29 #include "frame-unwind.h"
30 #include "dwarf2-frame.h"
38 #include "gdb_string.h"
39 #include "gdb_assert.h"
40 #include "arch-utils.h"
49 /* registers numbers shared with the simulator */
50 #include "gdb/sim-sh.h"
53 /* Information that is dependent on the processor variant. */
66 struct sh64_frame_cache
73 /* Flag showing that a frame has been created in the prologue code. */
78 /* Saved registers. */
79 CORE_ADDR saved_regs[SIM_SH64_NR_REGS];
83 /* Registers of SH5 */
87 DEFAULT_RETURN_REGNUM = 2,
88 STRUCT_RETURN_REGNUM = 2,
91 FLOAT_ARGLAST_REGNUM = 11,
97 /* FPP stands for Floating Point Pair, to avoid confusion with
98 GDB's gdbarch_fp0_regnum, which is the number of the first Floating
99 point register. Unfortunately on the sh5, the floating point
100 registers are called FR, and the floating point pairs are called FP. */
102 FPP_LAST_REGNUM = 204,
104 FV_LAST_REGNUM = 220,
106 R_LAST_C_REGNUM = 236,
113 FPSCR_C_REGNUM = 243,
116 FP_LAST_C_REGNUM = 260,
118 DR_LAST_C_REGNUM = 268,
120 FV_LAST_C_REGNUM = 272,
121 FPSCR_REGNUM = SIM_SH64_FPCSR_REGNUM,
122 SSR_REGNUM = SIM_SH64_SSR_REGNUM,
123 SPC_REGNUM = SIM_SH64_SPC_REGNUM,
124 TR7_REGNUM = SIM_SH64_TR0_REGNUM + 7,
125 FP_LAST_REGNUM = SIM_SH64_FR0_REGNUM + SIM_SH64_NR_FP_REGS - 1
129 sh64_register_name (struct gdbarch *gdbarch, int reg_nr)
131 static char *register_names[] =
133 /* SH MEDIA MODE (ISA 32) */
134 /* general registers (64-bit) 0-63 */
135 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
136 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
137 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
138 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
139 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
140 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
141 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
142 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
147 /* status reg., saved status reg., saved pc reg. (64-bit) 65-67 */
150 /* target registers (64-bit) 68-75*/
151 "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7",
153 /* floating point state control register (32-bit) 76 */
156 /* single precision floating point registers (32-bit) 77-140*/
157 "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
158 "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
159 "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
160 "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31",
161 "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39",
162 "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47",
163 "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55",
164 "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63",
166 /* double precision registers (pseudo) 141-172 */
167 "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
168 "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30",
169 "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46",
170 "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62",
172 /* floating point pairs (pseudo) 173-204*/
173 "fp0", "fp2", "fp4", "fp6", "fp8", "fp10", "fp12", "fp14",
174 "fp16", "fp18", "fp20", "fp22", "fp24", "fp26", "fp28", "fp30",
175 "fp32", "fp34", "fp36", "fp38", "fp40", "fp42", "fp44", "fp46",
176 "fp48", "fp50", "fp52", "fp54", "fp56", "fp58", "fp60", "fp62",
178 /* floating point vectors (4 floating point regs) (pseudo) 205-220*/
179 "fv0", "fv4", "fv8", "fv12", "fv16", "fv20", "fv24", "fv28",
180 "fv32", "fv36", "fv40", "fv44", "fv48", "fv52", "fv56", "fv60",
182 /* SH COMPACT MODE (ISA 16) (all pseudo) 221-272*/
183 "r0_c", "r1_c", "r2_c", "r3_c", "r4_c", "r5_c", "r6_c", "r7_c",
184 "r8_c", "r9_c", "r10_c", "r11_c", "r12_c", "r13_c", "r14_c", "r15_c",
186 "gbr_c", "mach_c", "macl_c", "pr_c", "t_c",
188 "fr0_c", "fr1_c", "fr2_c", "fr3_c", "fr4_c", "fr5_c", "fr6_c", "fr7_c",
189 "fr8_c", "fr9_c", "fr10_c", "fr11_c", "fr12_c", "fr13_c", "fr14_c", "fr15_c",
190 "dr0_c", "dr2_c", "dr4_c", "dr6_c", "dr8_c", "dr10_c", "dr12_c", "dr14_c",
191 "fv0_c", "fv4_c", "fv8_c", "fv12_c",
192 /* FIXME!!!! XF0 XF15, XD0 XD14 ?????*/
197 if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
199 return register_names[reg_nr];
202 #define NUM_PSEUDO_REGS_SH_MEDIA 80
203 #define NUM_PSEUDO_REGS_SH_COMPACT 51
205 /* Macros and functions for setting and testing a bit in a minimal
206 symbol that marks it as 32-bit function. The MSB of the minimal
207 symbol's "info" field is used for this purpose.
209 gdbarch_elf_make_msymbol_special tests whether an ELF symbol is "special",
210 i.e. refers to a 32-bit function, and sets a "special" bit in a
211 minimal symbol to mark it as a 32-bit function
212 MSYMBOL_IS_SPECIAL tests the "special" bit in a minimal symbol */
214 #define MSYMBOL_IS_SPECIAL(msym) \
215 MSYMBOL_TARGET_FLAG_1 (msym)
218 sh64_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym)
223 if (((elf_symbol_type *)(sym))->internal_elf_sym.st_other == STO_SH5_ISA32)
225 MSYMBOL_TARGET_FLAG_1 (msym) = 1;
226 SYMBOL_VALUE_ADDRESS (msym) |= 1;
230 /* ISA32 (shmedia) function addresses are odd (bit 0 is set). Here
231 are some macros to test, set, or clear bit 0 of addresses. */
232 #define IS_ISA32_ADDR(addr) ((addr) & 1)
233 #define MAKE_ISA32_ADDR(addr) ((addr) | 1)
234 #define UNMAKE_ISA32_ADDR(addr) ((addr) & ~1)
237 pc_is_isa32 (bfd_vma memaddr)
239 struct minimal_symbol *sym;
241 /* If bit 0 of the address is set, assume this is a
242 ISA32 (shmedia) address. */
243 if (IS_ISA32_ADDR (memaddr))
246 /* A flag indicating that this is a ISA32 function is stored by elfread.c in
247 the high bit of the info field. Use this to decide if the function is
249 sym = lookup_minimal_symbol_by_pc (memaddr);
251 return MSYMBOL_IS_SPECIAL (sym);
256 static const unsigned char *
257 sh64_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr)
259 /* The BRK instruction for shmedia is
260 01101111 11110101 11111111 11110000
261 which translates in big endian mode to 0x6f, 0xf5, 0xff, 0xf0
262 and in little endian mode to 0xf0, 0xff, 0xf5, 0x6f */
264 /* The BRK instruction for shcompact is
266 which translates in big endian mode to 0x0, 0x3b
267 and in little endian mode to 0x3b, 0x0*/
269 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
271 if (pc_is_isa32 (*pcptr))
273 static unsigned char big_breakpoint_media[] = {0x6f, 0xf5, 0xff, 0xf0};
274 *pcptr = UNMAKE_ISA32_ADDR (*pcptr);
275 *lenptr = sizeof (big_breakpoint_media);
276 return big_breakpoint_media;
280 static unsigned char big_breakpoint_compact[] = {0x0, 0x3b};
281 *lenptr = sizeof (big_breakpoint_compact);
282 return big_breakpoint_compact;
287 if (pc_is_isa32 (*pcptr))
289 static unsigned char little_breakpoint_media[] = {0xf0, 0xff, 0xf5, 0x6f};
290 *pcptr = UNMAKE_ISA32_ADDR (*pcptr);
291 *lenptr = sizeof (little_breakpoint_media);
292 return little_breakpoint_media;
296 static unsigned char little_breakpoint_compact[] = {0x3b, 0x0};
297 *lenptr = sizeof (little_breakpoint_compact);
298 return little_breakpoint_compact;
303 /* Prologue looks like
304 [mov.l <regs>,@-r15]...
309 Actually it can be more complicated than this. For instance, with
327 /* PTABS/L Rn, TRa 0110101111110001nnnnnnl00aaa0000
328 with l=1 and n = 18 0110101111110001010010100aaa0000 */
329 #define IS_PTABSL_R18(x) (((x) & 0xffffff8f) == 0x6bf14a00)
331 /* STS.L PR,@-r0 0100000000100010
332 r0-4-->r0, PR-->(r0) */
333 #define IS_STS_R0(x) ((x) == 0x4022)
335 /* STS PR, Rm 0000mmmm00101010
337 #define IS_STS_PR(x) (((x) & 0xf0ff) == 0x2a)
339 /* MOV.L Rm,@(disp,r15) 00011111mmmmdddd
341 #define IS_MOV_TO_R15(x) (((x) & 0xff00) == 0x1f00)
343 /* MOV.L R14,@(disp,r15) 000111111110dddd
344 R14-->(dispx4+r15) */
345 #define IS_MOV_R14(x) (((x) & 0xfff0) == 0x1fe0)
347 /* ST.Q R14, disp, R18 101011001110dddddddddd0100100000
348 R18-->(dispx8+R14) */
349 #define IS_STQ_R18_R14(x) (((x) & 0xfff003ff) == 0xace00120)
351 /* ST.Q R15, disp, R18 101011001111dddddddddd0100100000
352 R18-->(dispx8+R15) */
353 #define IS_STQ_R18_R15(x) (((x) & 0xfff003ff) == 0xacf00120)
355 /* ST.L R15, disp, R18 101010001111dddddddddd0100100000
356 R18-->(dispx4+R15) */
357 #define IS_STL_R18_R15(x) (((x) & 0xfff003ff) == 0xa8f00120)
359 /* ST.Q R15, disp, R14 1010 1100 1111 dddd dddd dd00 1110 0000
360 R14-->(dispx8+R15) */
361 #define IS_STQ_R14_R15(x) (((x) & 0xfff003ff) == 0xacf000e0)
363 /* ST.L R15, disp, R14 1010 1000 1111 dddd dddd dd00 1110 0000
364 R14-->(dispx4+R15) */
365 #define IS_STL_R14_R15(x) (((x) & 0xfff003ff) == 0xa8f000e0)
367 /* ADDI.L R15,imm,R15 1101 0100 1111 ssss ssss ss00 1111 0000
369 #define IS_ADDIL_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd4f000f0)
371 /* ADDI R15,imm,R15 1101 0000 1111 ssss ssss ss00 1111 0000
373 #define IS_ADDI_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd0f000f0)
375 /* ADD.L R15,R63,R14 0000 0000 1111 1000 1111 1100 1110 0000
377 #define IS_ADDL_SP_FP_MEDIA(x) ((x) == 0x00f8fce0)
379 /* ADD R15,R63,R14 0000 0000 1111 1001 1111 1100 1110 0000
381 #define IS_ADD_SP_FP_MEDIA(x) ((x) == 0x00f9fce0)
383 #define IS_MOV_SP_FP_MEDIA(x) (IS_ADDL_SP_FP_MEDIA(x) || IS_ADD_SP_FP_MEDIA(x))
385 /* MOV #imm, R0 1110 0000 ssss ssss
387 #define IS_MOV_R0(x) (((x) & 0xff00) == 0xe000)
389 /* MOV.L @(disp,PC), R0 1101 0000 iiii iiii */
390 #define IS_MOVL_R0(x) (((x) & 0xff00) == 0xd000)
392 /* ADD r15,r0 0011 0000 1111 1100
394 #define IS_ADD_SP_R0(x) ((x) == 0x30fc)
396 /* MOV.L R14 @-R0 0010 0000 1110 0110
397 R14-->(R0-4), R0-4-->R0 */
398 #define IS_MOV_R14_R0(x) ((x) == 0x20e6)
400 /* ADD Rm,R63,Rn Rm+R63-->Rn 0000 00mm mmmm 1001 1111 11nn nnnn 0000
401 where Rm is one of r2-r9 which are the argument registers. */
402 /* FIXME: Recognize the float and double register moves too! */
403 #define IS_MEDIA_IND_ARG_MOV(x) \
404 ((((x) & 0xfc0ffc0f) == 0x0009fc00) && (((x) & 0x03f00000) >= 0x00200000 && ((x) & 0x03f00000) <= 0x00900000))
406 /* ST.Q Rn,0,Rm Rm-->Rn+0 1010 11nn nnnn 0000 0000 00mm mmmm 0000
407 or ST.L Rn,0,Rm Rm-->Rn+0 1010 10nn nnnn 0000 0000 00mm mmmm 0000
408 where Rm is one of r2-r9 which are the argument registers. */
409 #define IS_MEDIA_ARG_MOV(x) \
410 (((((x) & 0xfc0ffc0f) == 0xac000000) || (((x) & 0xfc0ffc0f) == 0xa8000000)) \
411 && (((x) & 0x000003f0) >= 0x00000020 && ((x) & 0x000003f0) <= 0x00000090))
413 /* ST.B R14,0,Rn Rn-->(R14+0) 1010 0000 1110 0000 0000 00nn nnnn 0000*/
414 /* ST.W R14,0,Rn Rn-->(R14+0) 1010 0100 1110 0000 0000 00nn nnnn 0000*/
415 /* ST.L R14,0,Rn Rn-->(R14+0) 1010 1000 1110 0000 0000 00nn nnnn 0000*/
416 /* FST.S R14,0,FRn Rn-->(R14+0) 1011 0100 1110 0000 0000 00nn nnnn 0000*/
417 /* FST.D R14,0,DRn Rn-->(R14+0) 1011 1100 1110 0000 0000 00nn nnnn 0000*/
418 #define IS_MEDIA_MOV_TO_R14(x) \
419 ((((x) & 0xfffffc0f) == 0xa0e00000) \
420 || (((x) & 0xfffffc0f) == 0xa4e00000) \
421 || (((x) & 0xfffffc0f) == 0xa8e00000) \
422 || (((x) & 0xfffffc0f) == 0xb4e00000) \
423 || (((x) & 0xfffffc0f) == 0xbce00000))
425 /* MOV Rm, Rn Rm-->Rn 0110 nnnn mmmm 0011
427 #define IS_COMPACT_IND_ARG_MOV(x) \
428 ((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0020) && (((x) & 0x00f0) <= 0x0090))
430 /* compact direct arg move!
431 MOV.L Rn, @r14 0010 1110 mmmm 0010 */
432 #define IS_COMPACT_ARG_MOV(x) \
433 (((((x) & 0xff0f) == 0x2e02) && (((x) & 0x00f0) >= 0x0020) && ((x) & 0x00f0) <= 0x0090))
435 /* MOV.B Rm, @R14 0010 1110 mmmm 0000
436 MOV.W Rm, @R14 0010 1110 mmmm 0001 */
437 #define IS_COMPACT_MOV_TO_R14(x) \
438 ((((x) & 0xff0f) == 0x2e00) || (((x) & 0xff0f) == 0x2e01))
440 #define IS_JSR_R0(x) ((x) == 0x400b)
441 #define IS_NOP(x) ((x) == 0x0009)
444 /* MOV r15,r14 0110111011110011
446 #define IS_MOV_SP_FP(x) ((x) == 0x6ef3)
448 /* ADD #imm,r15 01111111iiiiiiii
450 #define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00)
452 /* Skip any prologue before the guts of a function */
454 /* Skip the prologue using the debug information. If this fails we'll
455 fall back on the 'guess' method below. */
457 after_prologue (CORE_ADDR pc)
459 struct symtab_and_line sal;
460 CORE_ADDR func_addr, func_end;
462 /* If we can not find the symbol in the partial symbol table, then
463 there is no hope we can determine the function's start address
465 if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
469 /* Get the line associated with FUNC_ADDR. */
470 sal = find_pc_line (func_addr, 0);
472 /* There are only two cases to consider. First, the end of the source line
473 is within the function bounds. In that case we return the end of the
474 source line. Second is the end of the source line extends beyond the
475 bounds of the current function. We need to use the slow code to
476 examine instructions in that case. */
477 if (sal.end < func_end)
484 look_for_args_moves (CORE_ADDR start_pc, int media_mode)
488 int insn_size = (media_mode ? 4 : 2);
490 for (here = start_pc, end = start_pc + (insn_size * 28); here < end;)
494 w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size);
496 if (IS_MEDIA_IND_ARG_MOV (w))
498 /* This must be followed by a store to r14, so the argument
499 is where the debug info says it is. This can happen after
500 the SP has been saved, unfortunately. */
502 int next_insn = read_memory_integer (UNMAKE_ISA32_ADDR (here),
505 if (IS_MEDIA_MOV_TO_R14 (next_insn))
508 else if (IS_MEDIA_ARG_MOV (w))
510 /* These instructions store directly the argument in r14. */
518 w = read_memory_integer (here, insn_size);
521 if (IS_COMPACT_IND_ARG_MOV (w))
523 /* This must be followed by a store to r14, so the argument
524 is where the debug info says it is. This can happen after
525 the SP has been saved, unfortunately. */
527 int next_insn = 0xffff & read_memory_integer (here, insn_size);
529 if (IS_COMPACT_MOV_TO_R14 (next_insn))
532 else if (IS_COMPACT_ARG_MOV (w))
534 /* These instructions store directly the argument in r14. */
537 else if (IS_MOVL_R0 (w))
539 /* There is a function that gcc calls to get the arguments
540 passed correctly to the function. Only after this
541 function call the arguments will be found at the place
542 where they are supposed to be. This happens in case the
543 argument has to be stored into a 64-bit register (for
544 instance doubles, long longs). SHcompact doesn't have
545 access to the full 64-bits, so we store the register in
546 stack slot and store the address of the stack slot in
547 the register, then do a call through a wrapper that
548 loads the memory value into the register. A SHcompact
549 callee calls an argument decoder
550 (GCC_shcompact_incoming_args) that stores the 64-bit
551 value in a stack slot and stores the address of the
552 stack slot in the register. GCC thinks the argument is
553 just passed by transparent reference, but this is only
554 true after the argument decoder is called. Such a call
555 needs to be considered part of the prologue. */
557 /* This must be followed by a JSR @r0 instruction and by
558 a NOP instruction. After these, the prologue is over! */
560 int next_insn = 0xffff & read_memory_integer (here, insn_size);
562 if (IS_JSR_R0 (next_insn))
564 next_insn = 0xffff & read_memory_integer (here, insn_size);
567 if (IS_NOP (next_insn))
580 sh64_skip_prologue_hard_way (CORE_ADDR start_pc)
590 if (pc_is_isa32 (start_pc) == 0)
596 for (here = start_pc, end = start_pc + (insn_size * 28); here < end;)
601 int w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size);
603 if (IS_STQ_R18_R14 (w) || IS_STQ_R18_R15 (w) || IS_STQ_R14_R15 (w)
604 || IS_STL_R14_R15 (w) || IS_STL_R18_R15 (w)
605 || IS_ADDIL_SP_MEDIA (w) || IS_ADDI_SP_MEDIA (w) || IS_PTABSL_R18 (w))
609 else if (IS_MOV_SP_FP (w) || IS_MOV_SP_FP_MEDIA(w))
617 /* Don't bail out yet, we may have arguments stored in
618 registers here, according to the debug info, so that
619 gdb can print the frames correctly. */
620 start_pc = look_for_args_moves (here - insn_size, media_mode);
626 int w = 0xffff & read_memory_integer (here, insn_size);
629 if (IS_STS_R0 (w) || IS_STS_PR (w)
630 || IS_MOV_TO_R15 (w) || IS_MOV_R14 (w)
631 || IS_MOV_R0 (w) || IS_ADD_SP_R0 (w) || IS_MOV_R14_R0 (w))
635 else if (IS_MOV_SP_FP (w))
643 /* Don't bail out yet, we may have arguments stored in
644 registers here, according to the debug info, so that
645 gdb can print the frames correctly. */
646 start_pc = look_for_args_moves (here - insn_size, media_mode);
656 sh64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
658 CORE_ADDR post_prologue_pc;
660 /* See if we can determine the end of the prologue via the symbol table.
661 If so, then return either PC, or the PC after the prologue, whichever
663 post_prologue_pc = after_prologue (pc);
665 /* If after_prologue returned a useful address, then use it. Else
666 fall back on the instruction skipping code. */
667 if (post_prologue_pc != 0)
668 return max (pc, post_prologue_pc);
670 return sh64_skip_prologue_hard_way (pc);
673 /* Should call_function allocate stack space for a struct return? */
675 sh64_use_struct_convention (struct type *type)
677 return (TYPE_LENGTH (type) > 8);
680 /* For vectors of 4 floating point registers. */
682 sh64_fv_reg_base_num (struct gdbarch *gdbarch, int fv_regnum)
686 fp_regnum = gdbarch_fp0_regnum (gdbarch) + (fv_regnum - FV0_REGNUM) * 4;
690 /* For double precision floating point registers, i.e 2 fp regs.*/
692 sh64_dr_reg_base_num (struct gdbarch *gdbarch, int dr_regnum)
696 fp_regnum = gdbarch_fp0_regnum (gdbarch) + (dr_regnum - DR0_REGNUM) * 2;
700 /* For pairs of floating point registers */
702 sh64_fpp_reg_base_num (struct gdbarch *gdbarch, int fpp_regnum)
706 fp_regnum = gdbarch_fp0_regnum (gdbarch) + (fpp_regnum - FPP0_REGNUM) * 2;
712 SH COMPACT MODE (ISA 16) (all pseudo) 221-272
713 GDB_REGNUM BASE_REGNUM
773 sh64_compact_reg_base_num (struct gdbarch *gdbarch, int reg_nr)
775 int base_regnum = reg_nr;
777 /* general register N maps to general register N */
778 if (reg_nr >= R0_C_REGNUM
779 && reg_nr <= R_LAST_C_REGNUM)
780 base_regnum = reg_nr - R0_C_REGNUM;
782 /* floating point register N maps to floating point register N */
783 else if (reg_nr >= FP0_C_REGNUM
784 && reg_nr <= FP_LAST_C_REGNUM)
785 base_regnum = reg_nr - FP0_C_REGNUM + gdbarch_fp0_regnum (gdbarch);
787 /* double prec register N maps to base regnum for double prec register N */
788 else if (reg_nr >= DR0_C_REGNUM
789 && reg_nr <= DR_LAST_C_REGNUM)
790 base_regnum = sh64_dr_reg_base_num (gdbarch,
791 DR0_REGNUM + reg_nr - DR0_C_REGNUM);
793 /* vector N maps to base regnum for vector register N */
794 else if (reg_nr >= FV0_C_REGNUM
795 && reg_nr <= FV_LAST_C_REGNUM)
796 base_regnum = sh64_fv_reg_base_num (gdbarch,
797 FV0_REGNUM + reg_nr - FV0_C_REGNUM);
799 else if (reg_nr == PC_C_REGNUM)
800 base_regnum = gdbarch_pc_regnum (gdbarch);
802 else if (reg_nr == GBR_C_REGNUM)
805 else if (reg_nr == MACH_C_REGNUM
806 || reg_nr == MACL_C_REGNUM)
809 else if (reg_nr == PR_C_REGNUM)
810 base_regnum = PR_REGNUM;
812 else if (reg_nr == T_C_REGNUM)
815 else if (reg_nr == FPSCR_C_REGNUM)
816 base_regnum = FPSCR_REGNUM; /*???? this register is a mess. */
818 else if (reg_nr == FPUL_C_REGNUM)
819 base_regnum = gdbarch_fp0_regnum (gdbarch) + 32;
825 sign_extend (int value, int bits)
827 value = value & ((1 << bits) - 1);
828 return (value & (1 << (bits - 1))
829 ? value | (~((1 << bits) - 1))
834 sh64_analyze_prologue (struct gdbarch *gdbarch,
835 struct sh64_frame_cache *cache,
837 CORE_ADDR current_pc)
845 int gdb_register_number;
847 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
849 cache->sp_offset = 0;
851 /* Loop around examining the prologue insns until we find something
852 that does not appear to be part of the prologue. But give up
853 after 20 of them, since we're getting silly then. */
857 if (cache->media_mode)
862 opc = pc + (insn_size * 28);
863 if (opc > current_pc)
865 for ( ; pc <= opc; pc += insn_size)
867 insn = read_memory_integer (cache->media_mode ? UNMAKE_ISA32_ADDR (pc)
871 if (!cache->media_mode)
873 if (IS_STS_PR (insn))
875 int next_insn = read_memory_integer (pc + insn_size, insn_size);
876 if (IS_MOV_TO_R15 (next_insn))
878 cache->saved_regs[PR_REGNUM] =
879 cache->sp_offset - ((((next_insn & 0xf) ^ 0x8) - 0x8) << 2);
884 else if (IS_MOV_R14 (insn))
885 cache->saved_regs[MEDIA_FP_REGNUM] =
886 cache->sp_offset - ((((insn & 0xf) ^ 0x8) - 0x8) << 2);
888 else if (IS_MOV_R0 (insn))
890 /* Put in R0 the offset from SP at which to store some
891 registers. We are interested in this value, because it
892 will tell us where the given registers are stored within
894 r0_val = ((insn & 0xff) ^ 0x80) - 0x80;
897 else if (IS_ADD_SP_R0 (insn))
899 /* This instruction still prepares r0, but we don't care.
900 We already have the offset in r0_val. */
903 else if (IS_STS_R0 (insn))
905 /* Store PR at r0_val-4 from SP. Decrement r0 by 4*/
906 cache->saved_regs[PR_REGNUM] = cache->sp_offset - (r0_val - 4);
910 else if (IS_MOV_R14_R0 (insn))
912 /* Store R14 at r0_val-4 from SP. Decrement r0 by 4 */
913 cache->saved_regs[MEDIA_FP_REGNUM] = cache->sp_offset
918 else if (IS_ADD_SP (insn))
919 cache->sp_offset -= ((insn & 0xff) ^ 0x80) - 0x80;
921 else if (IS_MOV_SP_FP (insn))
926 if (IS_ADDIL_SP_MEDIA (insn) || IS_ADDI_SP_MEDIA (insn))
928 sign_extend ((((insn & 0xffc00) ^ 0x80000) - 0x80000) >> 10, 9);
930 else if (IS_STQ_R18_R15 (insn))
931 cache->saved_regs[PR_REGNUM] =
932 cache->sp_offset - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3);
934 else if (IS_STL_R18_R15 (insn))
935 cache->saved_regs[PR_REGNUM] =
936 cache->sp_offset - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2);
938 else if (IS_STQ_R14_R15 (insn))
939 cache->saved_regs[MEDIA_FP_REGNUM] =
940 cache->sp_offset - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3);
942 else if (IS_STL_R14_R15 (insn))
943 cache->saved_regs[MEDIA_FP_REGNUM] =
944 cache->sp_offset - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2);
946 else if (IS_MOV_SP_FP_MEDIA (insn))
951 if (cache->saved_regs[MEDIA_FP_REGNUM] >= 0)
956 sh64_frame_align (struct gdbarch *ignore, CORE_ADDR sp)
961 /* Function: push_dummy_call
962 Setup the function arguments for calling a function in the inferior.
964 On the Renesas SH architecture, there are four registers (R4 to R7)
965 which are dedicated for passing function arguments. Up to the first
966 four arguments (depending on size) may go into these registers.
967 The rest go on the stack.
969 Arguments that are smaller than 4 bytes will still take up a whole
970 register or a whole 32-bit word on the stack, and will be
971 right-justified in the register or the stack word. This includes
972 chars, shorts, and small aggregate types.
974 Arguments that are larger than 4 bytes may be split between two or
975 more registers. If there are not enough registers free, an argument
976 may be passed partly in a register (or registers), and partly on the
977 stack. This includes doubles, long longs, and larger aggregates.
978 As far as I know, there is no upper limit to the size of aggregates
979 that will be passed in this way; in other words, the convention of
980 passing a pointer to a large aggregate instead of a copy is not used.
982 An exceptional case exists for struct arguments (and possibly other
983 aggregates such as arrays) if the size is larger than 4 bytes but
984 not a multiple of 4 bytes. In this case the argument is never split
985 between the registers and the stack, but instead is copied in its
986 entirety onto the stack, AND also copied into as many registers as
987 there is room for. In other words, space in registers permitting,
988 two copies of the same argument are passed in. As far as I can tell,
989 only the one on the stack is used, although that may be a function
990 of the level of compiler optimization. I suspect this is a compiler
991 bug. Arguments of these odd sizes are left-justified within the
992 word (as opposed to arguments smaller than 4 bytes, which are
995 If the function is to return an aggregate type such as a struct, it
996 is either returned in the normal return value register R0 (if its
997 size is no greater than one byte), or else the caller must allocate
998 space into which the callee will copy the return value (if the size
999 is greater than one byte). In this case, a pointer to the return
1000 value location is passed into the callee in register R2, which does
1001 not displace any of the other arguments passed in via registers R4
1004 /* R2-R9 for integer types and integer equivalent (char, pointers) and
1005 non-scalar (struct, union) elements (even if the elements are
1007 FR0-FR11 for single precision floating point (float)
1008 DR0-DR10 for double precision floating point (double)
1010 If a float is argument number 3 (for instance) and arguments number
1011 1,2, and 4 are integer, the mapping will be:
1012 arg1 -->R2, arg2 --> R3, arg3 -->FR0, arg4 --> R5. I.e. R4 is not used.
1014 If a float is argument number 10 (for instance) and arguments number
1015 1 through 10 are integer, the mapping will be:
1016 arg1->R2, arg2->R3, arg3->R4, arg4->R5, arg5->R6, arg6->R7, arg7->R8,
1017 arg8->R9, arg9->(0,SP)stack(8-byte aligned), arg10->FR0, arg11->stack(16,SP).
1018 I.e. there is hole in the stack.
1020 Different rules apply for variable arguments functions, and for functions
1021 for which the prototype is not known. */
1024 sh64_push_dummy_call (struct gdbarch *gdbarch,
1025 struct value *function,
1026 struct regcache *regcache,
1028 int nargs, struct value **args,
1029 CORE_ADDR sp, int struct_return,
1030 CORE_ADDR struct_addr)
1032 int stack_offset, stack_alloc;
1036 int float_arg_index = 0;
1037 int double_arg_index = 0;
1048 memset (fp_args, 0, sizeof (fp_args));
1050 /* first force sp to a 8-byte alignment */
1051 sp = sh64_frame_align (gdbarch, sp);
1053 /* The "struct return pointer" pseudo-argument has its own dedicated
1057 regcache_cooked_write_unsigned (regcache,
1058 STRUCT_RETURN_REGNUM, struct_addr);
1060 /* Now make sure there's space on the stack */
1061 for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++)
1062 stack_alloc += ((TYPE_LENGTH (value_type (args[argnum])) + 7) & ~7);
1063 sp -= stack_alloc; /* make room on stack for args */
1065 /* Now load as many as possible of the first arguments into
1066 registers, and push the rest onto the stack. There are 64 bytes
1067 in eight registers available. Loop thru args from first to last. */
1069 int_argreg = ARG0_REGNUM;
1070 float_argreg = gdbarch_fp0_regnum (gdbarch);
1071 double_argreg = DR0_REGNUM;
1073 for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++)
1075 type = value_type (args[argnum]);
1076 len = TYPE_LENGTH (type);
1077 memset (valbuf, 0, sizeof (valbuf));
1079 if (TYPE_CODE (type) != TYPE_CODE_FLT)
1081 argreg_size = register_size (gdbarch, int_argreg);
1083 if (len < argreg_size)
1085 /* value gets right-justified in the register or stack word */
1086 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
1087 memcpy (valbuf + argreg_size - len,
1088 (char *) value_contents (args[argnum]), len);
1090 memcpy (valbuf, (char *) value_contents (args[argnum]), len);
1095 val = (char *) value_contents (args[argnum]);
1099 if (int_argreg > ARGLAST_REGNUM)
1101 /* must go on the stack */
1102 write_memory (sp + stack_offset, (const bfd_byte *) val,
1104 stack_offset += 8;/*argreg_size;*/
1106 /* NOTE WELL!!!!! This is not an "else if" clause!!!
1107 That's because some *&^%$ things get passed on the stack
1108 AND in the registers! */
1109 if (int_argreg <= ARGLAST_REGNUM)
1111 /* there's room in a register */
1112 regval = extract_unsigned_integer (val, argreg_size);
1113 regcache_cooked_write_unsigned (regcache, int_argreg, regval);
1115 /* Store the value 8 bytes at a time. This means that
1116 things larger than 8 bytes may go partly in registers
1117 and partly on the stack. FIXME: argreg is incremented
1118 before we use its size. */
1126 val = (char *) value_contents (args[argnum]);
1129 /* Where is it going to be stored? */
1130 while (fp_args[float_arg_index])
1133 /* Now float_argreg points to the register where it
1134 should be stored. Are we still within the allowed
1136 if (float_arg_index <= FLOAT_ARGLAST_REGNUM)
1138 /* Goes in FR0...FR11 */
1139 regcache_cooked_write (regcache,
1140 gdbarch_fp0_regnum (gdbarch)
1143 fp_args[float_arg_index] = 1;
1144 /* Skip the corresponding general argument register. */
1149 /* Store it as the integers, 8 bytes at the time, if
1150 necessary spilling on the stack. */
1155 /* Where is it going to be stored? */
1156 while (fp_args[double_arg_index])
1157 double_arg_index += 2;
1158 /* Now double_argreg points to the register
1159 where it should be stored.
1160 Are we still within the allowed register set? */
1161 if (double_arg_index < FLOAT_ARGLAST_REGNUM)
1163 /* Goes in DR0...DR10 */
1164 /* The numbering of the DRi registers is consecutive,
1165 i.e. includes odd numbers. */
1166 int double_register_offset = double_arg_index / 2;
1167 int regnum = DR0_REGNUM + double_register_offset;
1168 regcache_cooked_write (regcache, regnum, val);
1169 fp_args[double_arg_index] = 1;
1170 fp_args[double_arg_index + 1] = 1;
1171 /* Skip the corresponding general argument register. */
1176 /* Store it as the integers, 8 bytes at the time, if
1177 necessary spilling on the stack. */
1181 /* Store return address. */
1182 regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
1184 /* Update stack pointer. */
1185 regcache_cooked_write_unsigned (regcache,
1186 gdbarch_sp_regnum (gdbarch), sp);
1191 /* Find a function's return value in the appropriate registers (in
1192 regbuf), and copy it into valbuf. Extract from an array REGBUF
1193 containing the (raw) register state a function return value of type
1194 TYPE, and copy that, in virtual format, into VALBUF. */
1196 sh64_extract_return_value (struct type *type, struct regcache *regcache,
1199 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1200 int len = TYPE_LENGTH (type);
1202 if (TYPE_CODE (type) == TYPE_CODE_FLT)
1206 /* Return value stored in gdbarch_fp0_regnum */
1207 regcache_raw_read (regcache,
1208 gdbarch_fp0_regnum (gdbarch), valbuf);
1212 /* return value stored in DR0_REGNUM */
1216 regcache_cooked_read (regcache, DR0_REGNUM, buf);
1218 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
1219 floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
1222 floatformat_to_doublest (&floatformat_ieee_double_big,
1224 store_typed_floating (valbuf, type, val);
1233 /* Result is in register 2. If smaller than 8 bytes, it is padded
1234 at the most significant end. */
1235 regcache_raw_read (regcache, DEFAULT_RETURN_REGNUM, buf);
1237 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
1238 offset = register_size (gdbarch, DEFAULT_RETURN_REGNUM)
1242 memcpy (valbuf, buf + offset, len);
1245 error ("bad size for return value");
1249 /* Write into appropriate registers a function return value
1250 of type TYPE, given in virtual format.
1251 If the architecture is sh4 or sh3e, store a function's return value
1252 in the R0 general register or in the FP0 floating point register,
1253 depending on the type of the return value. In all the other cases
1254 the result is stored in r0, left-justified. */
1257 sh64_store_return_value (struct type *type, struct regcache *regcache,
1260 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1261 char buf[64]; /* more than enough... */
1262 int len = TYPE_LENGTH (type);
1264 if (TYPE_CODE (type) == TYPE_CODE_FLT)
1266 int i, regnum = gdbarch_fp0_regnum (gdbarch);
1267 for (i = 0; i < len; i += 4)
1268 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
1269 regcache_raw_write (regcache, regnum++,
1270 (char *) valbuf + len - 4 - i);
1272 regcache_raw_write (regcache, regnum++, (char *) valbuf + i);
1276 int return_register = DEFAULT_RETURN_REGNUM;
1279 if (len <= register_size (gdbarch, return_register))
1281 /* Pad with zeros. */
1282 memset (buf, 0, register_size (gdbarch, return_register));
1283 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
1284 offset = 0; /*register_size (gdbarch,
1285 return_register) - len;*/
1287 offset = register_size (gdbarch, return_register) - len;
1289 memcpy (buf + offset, valbuf, len);
1290 regcache_raw_write (regcache, return_register, buf);
1293 regcache_raw_write (regcache, return_register, valbuf);
1297 static enum return_value_convention
1298 sh64_return_value (struct gdbarch *gdbarch, struct type *func_type,
1299 struct type *type, struct regcache *regcache,
1300 gdb_byte *readbuf, const gdb_byte *writebuf)
1302 if (sh64_use_struct_convention (type))
1303 return RETURN_VALUE_STRUCT_CONVENTION;
1305 sh64_store_return_value (type, regcache, writebuf);
1307 sh64_extract_return_value (type, regcache, readbuf);
1308 return RETURN_VALUE_REGISTER_CONVENTION;
1312 sh64_show_media_regs (struct frame_info *frame)
1314 struct gdbarch *gdbarch = get_frame_arch (frame);
1318 ("PC=%s SR=%016llx \n",
1319 phex (get_frame_register_unsigned (frame,
1320 gdbarch_pc_regnum (gdbarch)), 8),
1321 (long long) get_frame_register_unsigned (frame, SR_REGNUM));
1324 ("SSR=%016llx SPC=%016llx \n",
1325 (long long) get_frame_register_unsigned (frame, SSR_REGNUM),
1326 (long long) get_frame_register_unsigned (frame, SPC_REGNUM));
1329 (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
1331 for (i = 0; i < 64; i = i + 4)
1333 ("\nR%d-R%d %016llx %016llx %016llx %016llx\n",
1335 (long long) get_frame_register_unsigned (frame, i + 0),
1336 (long long) get_frame_register_unsigned (frame, i + 1),
1337 (long long) get_frame_register_unsigned (frame, i + 2),
1338 (long long) get_frame_register_unsigned (frame, i + 3));
1340 printf_filtered ("\n");
1342 for (i = 0; i < 64; i = i + 8)
1344 ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1346 (long) get_frame_register_unsigned
1347 (frame, gdbarch_fp0_regnum (gdbarch) + i + 0),
1348 (long) get_frame_register_unsigned
1349 (frame, gdbarch_fp0_regnum (gdbarch) + i + 1),
1350 (long) get_frame_register_unsigned
1351 (frame, gdbarch_fp0_regnum (gdbarch) + i + 2),
1352 (long) get_frame_register_unsigned
1353 (frame, gdbarch_fp0_regnum (gdbarch) + i + 3),
1354 (long) get_frame_register_unsigned
1355 (frame, gdbarch_fp0_regnum (gdbarch) + i + 4),
1356 (long) get_frame_register_unsigned
1357 (frame, gdbarch_fp0_regnum (gdbarch) + i + 5),
1358 (long) get_frame_register_unsigned
1359 (frame, gdbarch_fp0_regnum (gdbarch) + i + 6),
1360 (long) get_frame_register_unsigned
1361 (frame, gdbarch_fp0_regnum (gdbarch) + i + 7));
1365 sh64_show_compact_regs (struct frame_info *frame)
1367 struct gdbarch *gdbarch = get_frame_arch (frame);
1372 phex (get_frame_register_unsigned (frame, PC_C_REGNUM), 8));
1375 ("GBR=%08lx MACH=%08lx MACL=%08lx PR=%08lx T=%08lx\n",
1376 (long) get_frame_register_unsigned (frame, GBR_C_REGNUM),
1377 (long) get_frame_register_unsigned (frame, MACH_C_REGNUM),
1378 (long) get_frame_register_unsigned (frame, MACL_C_REGNUM),
1379 (long) get_frame_register_unsigned (frame, PR_C_REGNUM),
1380 (long) get_frame_register_unsigned (frame, T_C_REGNUM));
1382 ("FPSCR=%08lx FPUL=%08lx\n",
1383 (long) get_frame_register_unsigned (frame, FPSCR_C_REGNUM),
1384 (long) get_frame_register_unsigned (frame, FPUL_C_REGNUM));
1386 for (i = 0; i < 16; i = i + 4)
1388 ("\nR%d-R%d %08lx %08lx %08lx %08lx\n",
1390 (long) get_frame_register_unsigned (frame, i + 0),
1391 (long) get_frame_register_unsigned (frame, i + 1),
1392 (long) get_frame_register_unsigned (frame, i + 2),
1393 (long) get_frame_register_unsigned (frame, i + 3));
1395 printf_filtered ("\n");
1397 for (i = 0; i < 16; i = i + 8)
1399 ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
1401 (long) get_frame_register_unsigned
1402 (frame, gdbarch_fp0_regnum (gdbarch) + i + 0),
1403 (long) get_frame_register_unsigned
1404 (frame, gdbarch_fp0_regnum (gdbarch) + i + 1),
1405 (long) get_frame_register_unsigned
1406 (frame, gdbarch_fp0_regnum (gdbarch) + i + 2),
1407 (long) get_frame_register_unsigned
1408 (frame, gdbarch_fp0_regnum (gdbarch) + i + 3),
1409 (long) get_frame_register_unsigned
1410 (frame, gdbarch_fp0_regnum (gdbarch) + i + 4),
1411 (long) get_frame_register_unsigned
1412 (frame, gdbarch_fp0_regnum (gdbarch) + i + 5),
1413 (long) get_frame_register_unsigned
1414 (frame, gdbarch_fp0_regnum (gdbarch) + i + 6),
1415 (long) get_frame_register_unsigned
1416 (frame, gdbarch_fp0_regnum (gdbarch) + i + 7));
1419 /* FIXME!!! This only shows the registers for shmedia, excluding the
1420 pseudo registers. */
1422 sh64_show_regs (struct frame_info *frame)
1424 if (pc_is_isa32 (get_frame_pc (frame)))
1425 sh64_show_media_regs (frame);
1427 sh64_show_compact_regs (frame);
1432 SH MEDIA MODE (ISA 32)
1433 general registers (64-bit) 0-63
1434 0 r0, r1, r2, r3, r4, r5, r6, r7,
1435 64 r8, r9, r10, r11, r12, r13, r14, r15,
1436 128 r16, r17, r18, r19, r20, r21, r22, r23,
1437 192 r24, r25, r26, r27, r28, r29, r30, r31,
1438 256 r32, r33, r34, r35, r36, r37, r38, r39,
1439 320 r40, r41, r42, r43, r44, r45, r46, r47,
1440 384 r48, r49, r50, r51, r52, r53, r54, r55,
1441 448 r56, r57, r58, r59, r60, r61, r62, r63,
1446 status reg., saved status reg., saved pc reg. (64-bit) 65-67
1449 target registers (64-bit) 68-75
1450 544 tr0, tr1, tr2, tr3, tr4, tr5, tr6, tr7,
1452 floating point state control register (32-bit) 76
1455 single precision floating point registers (32-bit) 77-140
1456 612 fr0, fr1, fr2, fr3, fr4, fr5, fr6, fr7,
1457 644 fr8, fr9, fr10, fr11, fr12, fr13, fr14, fr15,
1458 676 fr16, fr17, fr18, fr19, fr20, fr21, fr22, fr23,
1459 708 fr24, fr25, fr26, fr27, fr28, fr29, fr30, fr31,
1460 740 fr32, fr33, fr34, fr35, fr36, fr37, fr38, fr39,
1461 772 fr40, fr41, fr42, fr43, fr44, fr45, fr46, fr47,
1462 804 fr48, fr49, fr50, fr51, fr52, fr53, fr54, fr55,
1463 836 fr56, fr57, fr58, fr59, fr60, fr61, fr62, fr63,
1465 TOTAL SPACE FOR REGISTERS: 868 bytes
1467 From here on they are all pseudo registers: no memory allocated.
1468 REGISTER_BYTE returns the register byte for the base register.
1470 double precision registers (pseudo) 141-172
1471 dr0, dr2, dr4, dr6, dr8, dr10, dr12, dr14,
1472 dr16, dr18, dr20, dr22, dr24, dr26, dr28, dr30,
1473 dr32, dr34, dr36, dr38, dr40, dr42, dr44, dr46,
1474 dr48, dr50, dr52, dr54, dr56, dr58, dr60, dr62,
1476 floating point pairs (pseudo) 173-204
1477 fp0, fp2, fp4, fp6, fp8, fp10, fp12, fp14,
1478 fp16, fp18, fp20, fp22, fp24, fp26, fp28, fp30,
1479 fp32, fp34, fp36, fp38, fp40, fp42, fp44, fp46,
1480 fp48, fp50, fp52, fp54, fp56, fp58, fp60, fp62,
1482 floating point vectors (4 floating point regs) (pseudo) 205-220
1483 fv0, fv4, fv8, fv12, fv16, fv20, fv24, fv28,
1484 fv32, fv36, fv40, fv44, fv48, fv52, fv56, fv60,
1486 SH COMPACT MODE (ISA 16) (all pseudo) 221-272
1487 r0_c, r1_c, r2_c, r3_c, r4_c, r5_c, r6_c, r7_c,
1488 r8_c, r9_c, r10_c, r11_c, r12_c, r13_c, r14_c, r15_c,
1490 gbr_c, mach_c, macl_c, pr_c, t_c,
1492 fr0_c, fr1_c, fr2_c, fr3_c, fr4_c, fr5_c, fr6_c, fr7_c,
1493 fr8_c, fr9_c, fr10_c, fr11_c, fr12_c, fr13_c, fr14_c, fr15_c
1494 dr0_c, dr2_c, dr4_c, dr6_c, dr8_c, dr10_c, dr12_c, dr14_c
1495 fv0_c, fv4_c, fv8_c, fv12_c
1498 static struct type *
1499 sh64_build_float_register_type (struct gdbarch *gdbarch, int high)
1501 return lookup_array_range_type (builtin_type (gdbarch)->builtin_float,
1505 /* Return the GDB type object for the "standard" data type
1506 of data in register REG_NR. */
1507 static struct type *
1508 sh64_register_type (struct gdbarch *gdbarch, int reg_nr)
1510 if ((reg_nr >= gdbarch_fp0_regnum (gdbarch)
1511 && reg_nr <= FP_LAST_REGNUM)
1512 || (reg_nr >= FP0_C_REGNUM
1513 && reg_nr <= FP_LAST_C_REGNUM))
1514 return builtin_type (gdbarch)->builtin_float;
1515 else if ((reg_nr >= DR0_REGNUM
1516 && reg_nr <= DR_LAST_REGNUM)
1517 || (reg_nr >= DR0_C_REGNUM
1518 && reg_nr <= DR_LAST_C_REGNUM))
1519 return builtin_type (gdbarch)->builtin_double;
1520 else if (reg_nr >= FPP0_REGNUM
1521 && reg_nr <= FPP_LAST_REGNUM)
1522 return sh64_build_float_register_type (gdbarch, 1);
1523 else if ((reg_nr >= FV0_REGNUM
1524 && reg_nr <= FV_LAST_REGNUM)
1525 ||(reg_nr >= FV0_C_REGNUM
1526 && reg_nr <= FV_LAST_C_REGNUM))
1527 return sh64_build_float_register_type (gdbarch, 3);
1528 else if (reg_nr == FPSCR_REGNUM)
1529 return builtin_type (gdbarch)->builtin_int;
1530 else if (reg_nr >= R0_C_REGNUM
1531 && reg_nr < FP0_C_REGNUM)
1532 return builtin_type (gdbarch)->builtin_int;
1534 return builtin_type (gdbarch)->builtin_long_long;
1538 sh64_register_convert_to_virtual (struct gdbarch *gdbarch, int regnum,
1539 struct type *type, char *from, char *to)
1541 if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_LITTLE)
1543 /* It is a no-op. */
1544 memcpy (to, from, register_size (gdbarch, regnum));
1548 if ((regnum >= DR0_REGNUM
1549 && regnum <= DR_LAST_REGNUM)
1550 || (regnum >= DR0_C_REGNUM
1551 && regnum <= DR_LAST_C_REGNUM))
1554 floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
1556 store_typed_floating (to, type, val);
1559 error ("sh64_register_convert_to_virtual called with non DR register number");
1563 sh64_register_convert_to_raw (struct gdbarch *gdbarch, struct type *type,
1564 int regnum, const void *from, void *to)
1566 if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_LITTLE)
1568 /* It is a no-op. */
1569 memcpy (to, from, register_size (gdbarch, regnum));
1573 if ((regnum >= DR0_REGNUM
1574 && regnum <= DR_LAST_REGNUM)
1575 || (regnum >= DR0_C_REGNUM
1576 && regnum <= DR_LAST_C_REGNUM))
1578 DOUBLEST val = extract_typed_floating (from, type);
1579 floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword,
1583 error ("sh64_register_convert_to_raw called with non DR register number");
1587 sh64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
1588 int reg_nr, gdb_byte *buffer)
1593 char temp_buffer[MAX_REGISTER_SIZE];
1595 if (reg_nr >= DR0_REGNUM
1596 && reg_nr <= DR_LAST_REGNUM)
1598 base_regnum = sh64_dr_reg_base_num (gdbarch, reg_nr);
1600 /* Build the value in the provided buffer. */
1601 /* DR regs are double precision registers obtained by
1602 concatenating 2 single precision floating point registers. */
1603 for (portion = 0; portion < 2; portion++)
1604 regcache_raw_read (regcache, base_regnum + portion,
1606 + register_size (gdbarch, base_regnum) * portion));
1608 /* We must pay attention to the endianness. */
1609 sh64_register_convert_to_virtual (gdbarch, reg_nr,
1610 register_type (gdbarch, reg_nr),
1611 temp_buffer, buffer);
1615 else if (reg_nr >= FPP0_REGNUM
1616 && reg_nr <= FPP_LAST_REGNUM)
1618 base_regnum = sh64_fpp_reg_base_num (gdbarch, reg_nr);
1620 /* Build the value in the provided buffer. */
1621 /* FPP regs are pairs of single precision registers obtained by
1622 concatenating 2 single precision floating point registers. */
1623 for (portion = 0; portion < 2; portion++)
1624 regcache_raw_read (regcache, base_regnum + portion,
1626 + register_size (gdbarch, base_regnum) * portion));
1629 else if (reg_nr >= FV0_REGNUM
1630 && reg_nr <= FV_LAST_REGNUM)
1632 base_regnum = sh64_fv_reg_base_num (gdbarch, reg_nr);
1634 /* Build the value in the provided buffer. */
1635 /* FV regs are vectors of single precision registers obtained by
1636 concatenating 4 single precision floating point registers. */
1637 for (portion = 0; portion < 4; portion++)
1638 regcache_raw_read (regcache, base_regnum + portion,
1640 + register_size (gdbarch, base_regnum) * portion));
1643 /* sh compact pseudo registers. 1-to-1 with a shmedia register */
1644 else if (reg_nr >= R0_C_REGNUM
1645 && reg_nr <= T_C_REGNUM)
1647 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1649 /* Build the value in the provided buffer. */
1650 regcache_raw_read (regcache, base_regnum, temp_buffer);
1651 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
1653 memcpy (buffer, temp_buffer + offset, 4); /* get LOWER 32 bits only????*/
1656 else if (reg_nr >= FP0_C_REGNUM
1657 && reg_nr <= FP_LAST_C_REGNUM)
1659 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1661 /* Build the value in the provided buffer. */
1662 /* Floating point registers map 1-1 to the media fp regs,
1663 they have the same size and endianness. */
1664 regcache_raw_read (regcache, base_regnum, buffer);
1667 else if (reg_nr >= DR0_C_REGNUM
1668 && reg_nr <= DR_LAST_C_REGNUM)
1670 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1672 /* DR_C regs are double precision registers obtained by
1673 concatenating 2 single precision floating point registers. */
1674 for (portion = 0; portion < 2; portion++)
1675 regcache_raw_read (regcache, base_regnum + portion,
1677 + register_size (gdbarch, base_regnum) * portion));
1679 /* We must pay attention to the endianness. */
1680 sh64_register_convert_to_virtual (gdbarch, reg_nr,
1681 register_type (gdbarch, reg_nr),
1682 temp_buffer, buffer);
1685 else if (reg_nr >= FV0_C_REGNUM
1686 && reg_nr <= FV_LAST_C_REGNUM)
1688 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1690 /* Build the value in the provided buffer. */
1691 /* FV_C regs are vectors of single precision registers obtained by
1692 concatenating 4 single precision floating point registers. */
1693 for (portion = 0; portion < 4; portion++)
1694 regcache_raw_read (regcache, base_regnum + portion,
1696 + register_size (gdbarch, base_regnum) * portion));
1699 else if (reg_nr == FPSCR_C_REGNUM)
1701 int fpscr_base_regnum;
1703 unsigned int fpscr_value;
1704 unsigned int sr_value;
1705 unsigned int fpscr_c_value;
1706 unsigned int fpscr_c_part1_value;
1707 unsigned int fpscr_c_part2_value;
1709 fpscr_base_regnum = FPSCR_REGNUM;
1710 sr_base_regnum = SR_REGNUM;
1712 /* Build the value in the provided buffer. */
1713 /* FPSCR_C is a very weird register that contains sparse bits
1714 from the FPSCR and the SR architectural registers.
1721 2-17 Bit 2-18 of FPSCR
1722 18-20 Bits 12,13,14 of SR
1726 /* Get FPSCR into a local buffer */
1727 regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer);
1728 /* Get value as an int. */
1729 fpscr_value = extract_unsigned_integer (temp_buffer, 4);
1730 /* Get SR into a local buffer */
1731 regcache_raw_read (regcache, sr_base_regnum, temp_buffer);
1732 /* Get value as an int. */
1733 sr_value = extract_unsigned_integer (temp_buffer, 4);
1734 /* Build the new value. */
1735 fpscr_c_part1_value = fpscr_value & 0x3fffd;
1736 fpscr_c_part2_value = (sr_value & 0x7000) << 6;
1737 fpscr_c_value = fpscr_c_part1_value | fpscr_c_part2_value;
1738 /* Store that in out buffer!!! */
1739 store_unsigned_integer (buffer, 4, fpscr_c_value);
1740 /* FIXME There is surely an endianness gotcha here. */
1743 else if (reg_nr == FPUL_C_REGNUM)
1745 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1747 /* FPUL_C register is floating point register 32,
1748 same size, same endianness. */
1749 regcache_raw_read (regcache, base_regnum, buffer);
1754 sh64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
1755 int reg_nr, const gdb_byte *buffer)
1757 int base_regnum, portion;
1759 char temp_buffer[MAX_REGISTER_SIZE];
1761 if (reg_nr >= DR0_REGNUM
1762 && reg_nr <= DR_LAST_REGNUM)
1764 base_regnum = sh64_dr_reg_base_num (gdbarch, reg_nr);
1765 /* We must pay attention to the endianness. */
1766 sh64_register_convert_to_raw (gdbarch, register_type (gdbarch, reg_nr),
1768 buffer, temp_buffer);
1770 /* Write the real regs for which this one is an alias. */
1771 for (portion = 0; portion < 2; portion++)
1772 regcache_raw_write (regcache, base_regnum + portion,
1774 + register_size (gdbarch,
1775 base_regnum) * portion));
1778 else if (reg_nr >= FPP0_REGNUM
1779 && reg_nr <= FPP_LAST_REGNUM)
1781 base_regnum = sh64_fpp_reg_base_num (gdbarch, reg_nr);
1783 /* Write the real regs for which this one is an alias. */
1784 for (portion = 0; portion < 2; portion++)
1785 regcache_raw_write (regcache, base_regnum + portion,
1787 + register_size (gdbarch,
1788 base_regnum) * portion));
1791 else if (reg_nr >= FV0_REGNUM
1792 && reg_nr <= FV_LAST_REGNUM)
1794 base_regnum = sh64_fv_reg_base_num (gdbarch, reg_nr);
1796 /* Write the real regs for which this one is an alias. */
1797 for (portion = 0; portion < 4; portion++)
1798 regcache_raw_write (regcache, base_regnum + portion,
1800 + register_size (gdbarch,
1801 base_regnum) * portion));
1804 /* sh compact general pseudo registers. 1-to-1 with a shmedia
1805 register but only 4 bytes of it. */
1806 else if (reg_nr >= R0_C_REGNUM
1807 && reg_nr <= T_C_REGNUM)
1809 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1810 /* reg_nr is 32 bit here, and base_regnum is 64 bits. */
1811 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
1815 /* Let's read the value of the base register into a temporary
1816 buffer, so that overwriting the last four bytes with the new
1817 value of the pseudo will leave the upper 4 bytes unchanged. */
1818 regcache_raw_read (regcache, base_regnum, temp_buffer);
1819 /* Write as an 8 byte quantity */
1820 memcpy (temp_buffer + offset, buffer, 4);
1821 regcache_raw_write (regcache, base_regnum, temp_buffer);
1824 /* sh floating point compact pseudo registers. 1-to-1 with a shmedia
1825 registers. Both are 4 bytes. */
1826 else if (reg_nr >= FP0_C_REGNUM
1827 && reg_nr <= FP_LAST_C_REGNUM)
1829 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1830 regcache_raw_write (regcache, base_regnum, buffer);
1833 else if (reg_nr >= DR0_C_REGNUM
1834 && reg_nr <= DR_LAST_C_REGNUM)
1836 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1837 for (portion = 0; portion < 2; portion++)
1839 /* We must pay attention to the endianness. */
1840 sh64_register_convert_to_raw (gdbarch,
1841 register_type (gdbarch, reg_nr),
1843 buffer, temp_buffer);
1845 regcache_raw_write (regcache, base_regnum + portion,
1847 + register_size (gdbarch,
1848 base_regnum) * portion));
1852 else if (reg_nr >= FV0_C_REGNUM
1853 && reg_nr <= FV_LAST_C_REGNUM)
1855 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1857 for (portion = 0; portion < 4; portion++)
1859 regcache_raw_write (regcache, base_regnum + portion,
1861 + register_size (gdbarch,
1862 base_regnum) * portion));
1866 else if (reg_nr == FPSCR_C_REGNUM)
1868 int fpscr_base_regnum;
1870 unsigned int fpscr_value;
1871 unsigned int sr_value;
1872 unsigned int old_fpscr_value;
1873 unsigned int old_sr_value;
1874 unsigned int fpscr_c_value;
1875 unsigned int fpscr_mask;
1876 unsigned int sr_mask;
1878 fpscr_base_regnum = FPSCR_REGNUM;
1879 sr_base_regnum = SR_REGNUM;
1881 /* FPSCR_C is a very weird register that contains sparse bits
1882 from the FPSCR and the SR architectural registers.
1889 2-17 Bit 2-18 of FPSCR
1890 18-20 Bits 12,13,14 of SR
1894 /* Get value as an int. */
1895 fpscr_c_value = extract_unsigned_integer (buffer, 4);
1897 /* Build the new values. */
1898 fpscr_mask = 0x0003fffd;
1899 sr_mask = 0x001c0000;
1901 fpscr_value = fpscr_c_value & fpscr_mask;
1902 sr_value = (fpscr_value & sr_mask) >> 6;
1904 regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer);
1905 old_fpscr_value = extract_unsigned_integer (temp_buffer, 4);
1906 old_fpscr_value &= 0xfffc0002;
1907 fpscr_value |= old_fpscr_value;
1908 store_unsigned_integer (temp_buffer, 4, fpscr_value);
1909 regcache_raw_write (regcache, fpscr_base_regnum, temp_buffer);
1911 regcache_raw_read (regcache, sr_base_regnum, temp_buffer);
1912 old_sr_value = extract_unsigned_integer (temp_buffer, 4);
1913 old_sr_value &= 0xffff8fff;
1914 sr_value |= old_sr_value;
1915 store_unsigned_integer (temp_buffer, 4, sr_value);
1916 regcache_raw_write (regcache, sr_base_regnum, temp_buffer);
1919 else if (reg_nr == FPUL_C_REGNUM)
1921 base_regnum = sh64_compact_reg_base_num (gdbarch, reg_nr);
1922 regcache_raw_write (regcache, base_regnum, buffer);
1926 /* FIXME:!! THIS SHOULD TAKE CARE OF GETTING THE RIGHT PORTION OF THE
1927 shmedia REGISTERS. */
1928 /* Control registers, compact mode. */
1930 sh64_do_cr_c_register_info (struct ui_file *file, struct frame_info *frame,
1933 switch (cr_c_regnum)
1936 fprintf_filtered (file, "pc_c\t0x%08x\n",
1937 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1940 fprintf_filtered (file, "gbr_c\t0x%08x\n",
1941 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1944 fprintf_filtered (file, "mach_c\t0x%08x\n",
1945 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1948 fprintf_filtered (file, "macl_c\t0x%08x\n",
1949 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1952 fprintf_filtered (file, "pr_c\t0x%08x\n",
1953 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1956 fprintf_filtered (file, "t_c\t0x%08x\n",
1957 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1959 case FPSCR_C_REGNUM:
1960 fprintf_filtered (file, "fpscr_c\t0x%08x\n",
1961 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1964 fprintf_filtered (file, "fpul_c\t0x%08x\n",
1965 (int) get_frame_register_unsigned (frame, cr_c_regnum));
1971 sh64_do_fp_register (struct gdbarch *gdbarch, struct ui_file *file,
1972 struct frame_info *frame, int regnum)
1973 { /* do values for FP (float) regs */
1974 unsigned char *raw_buffer;
1975 double flt; /* double extracted from raw hex data */
1979 /* Allocate space for the float. */
1980 raw_buffer = (unsigned char *) alloca
1981 (register_size (gdbarch,
1985 /* Get the data in raw format. */
1986 if (!frame_register_read (frame, regnum, raw_buffer))
1987 error ("can't read register %d (%s)",
1988 regnum, gdbarch_register_name (gdbarch, regnum));
1990 /* Get the register as a number */
1991 flt = unpack_double (builtin_type (gdbarch)->builtin_float, raw_buffer, &inv);
1993 /* Print the name and some spaces. */
1994 fputs_filtered (gdbarch_register_name (gdbarch, regnum), file);
1995 print_spaces_filtered (15 - strlen (gdbarch_register_name
1996 (gdbarch, regnum)), file);
1998 /* Print the value. */
2000 fprintf_filtered (file, "<invalid float>");
2002 fprintf_filtered (file, "%-10.9g", flt);
2004 /* Print the fp register as hex. */
2005 fprintf_filtered (file, "\t(raw 0x");
2006 for (j = 0; j < register_size (gdbarch, regnum); j++)
2008 int idx = gdbarch_byte_order (gdbarch)
2009 == BFD_ENDIAN_BIG ? j : register_size
2010 (gdbarch, regnum) - 1 - j;
2011 fprintf_filtered (file, "%02x", raw_buffer[idx]);
2013 fprintf_filtered (file, ")");
2014 fprintf_filtered (file, "\n");
2018 sh64_do_pseudo_register (struct gdbarch *gdbarch, struct ui_file *file,
2019 struct frame_info *frame, int regnum)
2021 /* All the sh64-compact mode registers are pseudo registers. */
2023 if (regnum < gdbarch_num_regs (gdbarch)
2024 || regnum >= gdbarch_num_regs (gdbarch)
2025 + NUM_PSEUDO_REGS_SH_MEDIA
2026 + NUM_PSEUDO_REGS_SH_COMPACT)
2027 internal_error (__FILE__, __LINE__,
2028 _("Invalid pseudo register number %d\n"), regnum);
2030 else if ((regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM))
2032 int fp_regnum = sh64_dr_reg_base_num (gdbarch, regnum);
2033 fprintf_filtered (file, "dr%d\t0x%08x%08x\n", regnum - DR0_REGNUM,
2034 (unsigned) get_frame_register_unsigned (frame, fp_regnum),
2035 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 1));
2038 else if ((regnum >= DR0_C_REGNUM && regnum <= DR_LAST_C_REGNUM))
2040 int fp_regnum = sh64_compact_reg_base_num (gdbarch, regnum);
2041 fprintf_filtered (file, "dr%d_c\t0x%08x%08x\n", regnum - DR0_C_REGNUM,
2042 (unsigned) get_frame_register_unsigned (frame, fp_regnum),
2043 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 1));
2046 else if ((regnum >= FV0_REGNUM && regnum <= FV_LAST_REGNUM))
2048 int fp_regnum = sh64_fv_reg_base_num (gdbarch, regnum);
2049 fprintf_filtered (file, "fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n",
2050 regnum - FV0_REGNUM,
2051 (unsigned) get_frame_register_unsigned (frame, fp_regnum),
2052 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 1),
2053 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 2),
2054 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 3));
2057 else if ((regnum >= FV0_C_REGNUM && regnum <= FV_LAST_C_REGNUM))
2059 int fp_regnum = sh64_compact_reg_base_num (gdbarch, regnum);
2060 fprintf_filtered (file, "fv%d_c\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n",
2061 regnum - FV0_C_REGNUM,
2062 (unsigned) get_frame_register_unsigned (frame, fp_regnum),
2063 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 1),
2064 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 2),
2065 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 3));
2068 else if (regnum >= FPP0_REGNUM && regnum <= FPP_LAST_REGNUM)
2070 int fp_regnum = sh64_fpp_reg_base_num (gdbarch, regnum);
2071 fprintf_filtered (file, "fpp%d\t0x%08x\t0x%08x\n", regnum - FPP0_REGNUM,
2072 (unsigned) get_frame_register_unsigned (frame, fp_regnum),
2073 (unsigned) get_frame_register_unsigned (frame, fp_regnum + 1));
2076 else if (regnum >= R0_C_REGNUM && regnum <= R_LAST_C_REGNUM)
2078 int c_regnum = sh64_compact_reg_base_num (gdbarch, regnum);
2079 fprintf_filtered (file, "r%d_c\t0x%08x\n", regnum - R0_C_REGNUM,
2080 (unsigned) get_frame_register_unsigned (frame, c_regnum));
2082 else if (regnum >= FP0_C_REGNUM && regnum <= FP_LAST_C_REGNUM)
2083 /* This should work also for pseudoregs. */
2084 sh64_do_fp_register (gdbarch, file, frame, regnum);
2085 else if (regnum >= PC_C_REGNUM && regnum <= FPUL_C_REGNUM)
2086 sh64_do_cr_c_register_info (file, frame, regnum);
2090 sh64_do_register (struct gdbarch *gdbarch, struct ui_file *file,
2091 struct frame_info *frame, int regnum)
2093 unsigned char raw_buffer[MAX_REGISTER_SIZE];
2094 struct value_print_options opts;
2096 fputs_filtered (gdbarch_register_name (gdbarch, regnum), file);
2097 print_spaces_filtered (15 - strlen (gdbarch_register_name
2098 (gdbarch, regnum)), file);
2100 /* Get the data in raw format. */
2101 if (!frame_register_read (frame, regnum, raw_buffer))
2102 fprintf_filtered (file, "*value not available*\n");
2104 get_formatted_print_options (&opts, 'x');
2106 val_print (register_type (gdbarch, regnum), raw_buffer, 0, 0,
2107 file, 0, &opts, current_language);
2108 fprintf_filtered (file, "\t");
2109 get_formatted_print_options (&opts, 0);
2111 val_print (register_type (gdbarch, regnum), raw_buffer, 0, 0,
2112 file, 0, &opts, current_language);
2113 fprintf_filtered (file, "\n");
2117 sh64_print_register (struct gdbarch *gdbarch, struct ui_file *file,
2118 struct frame_info *frame, int regnum)
2120 if (regnum < 0 || regnum >= gdbarch_num_regs (gdbarch)
2121 + gdbarch_num_pseudo_regs (gdbarch))
2122 internal_error (__FILE__, __LINE__,
2123 _("Invalid register number %d\n"), regnum);
2125 else if (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch))
2127 if (TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT)
2128 sh64_do_fp_register (gdbarch, file, frame, regnum); /* FP regs */
2130 sh64_do_register (gdbarch, file, frame, regnum);
2133 else if (regnum < gdbarch_num_regs (gdbarch)
2134 + gdbarch_num_pseudo_regs (gdbarch))
2135 sh64_do_pseudo_register (gdbarch, file, frame, regnum);
2139 sh64_media_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file,
2140 struct frame_info *frame, int regnum,
2143 if (regnum != -1) /* do one specified register */
2145 if (*(gdbarch_register_name (gdbarch, regnum)) == '\0')
2146 error ("Not a valid register for the current processor type");
2148 sh64_print_register (gdbarch, file, frame, regnum);
2151 /* do all (or most) registers */
2154 while (regnum < gdbarch_num_regs (gdbarch))
2156 /* If the register name is empty, it is undefined for this
2157 processor, so don't display anything. */
2158 if (gdbarch_register_name (gdbarch, regnum) == NULL
2159 || *(gdbarch_register_name (gdbarch, regnum)) == '\0')
2165 if (TYPE_CODE (register_type (gdbarch, regnum))
2170 /* true for "INFO ALL-REGISTERS" command */
2171 sh64_do_fp_register (gdbarch, file, frame, regnum);
2175 regnum += FP_LAST_REGNUM - gdbarch_fp0_regnum (gdbarch);
2180 sh64_do_register (gdbarch, file, frame, regnum);
2186 while (regnum < gdbarch_num_regs (gdbarch)
2187 + gdbarch_num_pseudo_regs (gdbarch))
2189 sh64_do_pseudo_register (gdbarch, file, frame, regnum);
2196 sh64_compact_print_registers_info (struct gdbarch *gdbarch,
2197 struct ui_file *file,
2198 struct frame_info *frame, int regnum,
2201 if (regnum != -1) /* do one specified register */
2203 if (*(gdbarch_register_name (gdbarch, regnum)) == '\0')
2204 error ("Not a valid register for the current processor type");
2206 if (regnum >= 0 && regnum < R0_C_REGNUM)
2207 error ("Not a valid register for the current processor mode.");
2209 sh64_print_register (gdbarch, file, frame, regnum);
2212 /* do all compact registers */
2214 regnum = R0_C_REGNUM;
2215 while (regnum < gdbarch_num_regs (gdbarch)
2216 + gdbarch_num_pseudo_regs (gdbarch))
2218 sh64_do_pseudo_register (gdbarch, file, frame, regnum);
2225 sh64_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file,
2226 struct frame_info *frame, int regnum, int fpregs)
2228 if (pc_is_isa32 (get_frame_pc (frame)))
2229 sh64_media_print_registers_info (gdbarch, file, frame, regnum, fpregs);
2231 sh64_compact_print_registers_info (gdbarch, file, frame, regnum, fpregs);
2234 static struct sh64_frame_cache *
2235 sh64_alloc_frame_cache (void)
2237 struct sh64_frame_cache *cache;
2240 cache = FRAME_OBSTACK_ZALLOC (struct sh64_frame_cache);
2244 cache->saved_sp = 0;
2245 cache->sp_offset = 0;
2248 /* Frameless until proven otherwise. */
2251 /* Saved registers. We initialize these to -1 since zero is a valid
2252 offset (that's where fp is supposed to be stored). */
2253 for (i = 0; i < SIM_SH64_NR_REGS; i++)
2255 cache->saved_regs[i] = -1;
2261 static struct sh64_frame_cache *
2262 sh64_frame_cache (struct frame_info *this_frame, void **this_cache)
2264 struct gdbarch *gdbarch;
2265 struct sh64_frame_cache *cache;
2266 CORE_ADDR current_pc;
2272 gdbarch = get_frame_arch (this_frame);
2273 cache = sh64_alloc_frame_cache ();
2274 *this_cache = cache;
2276 current_pc = get_frame_pc (this_frame);
2277 cache->media_mode = pc_is_isa32 (current_pc);
2279 /* In principle, for normal frames, fp holds the frame pointer,
2280 which holds the base address for the current stack frame.
2281 However, for functions that don't need it, the frame pointer is
2282 optional. For these "frameless" functions the frame pointer is
2283 actually the frame pointer of the calling frame. */
2284 cache->base = get_frame_register_unsigned (this_frame, MEDIA_FP_REGNUM);
2285 if (cache->base == 0)
2288 cache->pc = get_frame_func (this_frame);
2290 sh64_analyze_prologue (gdbarch, cache, cache->pc, current_pc);
2292 if (!cache->uses_fp)
2294 /* We didn't find a valid frame, which means that CACHE->base
2295 currently holds the frame pointer for our calling frame. If
2296 we're at the start of a function, or somewhere half-way its
2297 prologue, the function's frame probably hasn't been fully
2298 setup yet. Try to reconstruct the base address for the stack
2299 frame by looking at the stack pointer. For truly "frameless"
2300 functions this might work too. */
2301 cache->base = get_frame_register_unsigned
2302 (this_frame, gdbarch_sp_regnum (gdbarch));
2305 /* Now that we have the base address for the stack frame we can
2306 calculate the value of sp in the calling frame. */
2307 cache->saved_sp = cache->base + cache->sp_offset;
2309 /* Adjust all the saved registers such that they contain addresses
2310 instead of offsets. */
2311 for (i = 0; i < SIM_SH64_NR_REGS; i++)
2312 if (cache->saved_regs[i] != -1)
2313 cache->saved_regs[i] = cache->saved_sp - cache->saved_regs[i];
2318 static struct value *
2319 sh64_frame_prev_register (struct frame_info *this_frame,
2320 void **this_cache, int regnum)
2322 struct sh64_frame_cache *cache = sh64_frame_cache (this_frame, this_cache);
2323 struct gdbarch *gdbarch = get_frame_arch (this_frame);
2325 gdb_assert (regnum >= 0);
2327 if (regnum == gdbarch_sp_regnum (gdbarch) && cache->saved_sp)
2328 frame_unwind_got_constant (this_frame, regnum, cache->saved_sp);
2330 /* The PC of the previous frame is stored in the PR register of
2331 the current frame. Frob regnum so that we pull the value from
2332 the correct place. */
2333 if (regnum == gdbarch_pc_regnum (gdbarch))
2336 if (regnum < SIM_SH64_NR_REGS && cache->saved_regs[regnum] != -1)
2338 if (gdbarch_tdep (gdbarch)->sh_abi == SH_ABI_32
2339 && (regnum == MEDIA_FP_REGNUM || regnum == PR_REGNUM))
2342 val = read_memory_unsigned_integer (cache->saved_regs[regnum], 4);
2343 return frame_unwind_got_constant (this_frame, regnum, val);
2346 return frame_unwind_got_memory (this_frame, regnum,
2347 cache->saved_regs[regnum]);
2350 return frame_unwind_got_register (this_frame, regnum, regnum);
2354 sh64_frame_this_id (struct frame_info *this_frame, void **this_cache,
2355 struct frame_id *this_id)
2357 struct sh64_frame_cache *cache = sh64_frame_cache (this_frame, this_cache);
2359 /* This marks the outermost frame. */
2360 if (cache->base == 0)
2363 *this_id = frame_id_build (cache->saved_sp, cache->pc);
2366 static const struct frame_unwind sh64_frame_unwind = {
2369 sh64_frame_prev_register,
2371 default_frame_sniffer
2375 sh64_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
2377 return frame_unwind_register_unsigned (next_frame,
2378 gdbarch_sp_regnum (gdbarch));
2382 sh64_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
2384 return frame_unwind_register_unsigned (next_frame,
2385 gdbarch_pc_regnum (gdbarch));
2388 static struct frame_id
2389 sh64_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
2391 CORE_ADDR sp = get_frame_register_unsigned (this_frame,
2392 gdbarch_sp_regnum (gdbarch));
2393 return frame_id_build (sp, get_frame_pc (this_frame));
2397 sh64_frame_base_address (struct frame_info *this_frame, void **this_cache)
2399 struct sh64_frame_cache *cache = sh64_frame_cache (this_frame, this_cache);
2404 static const struct frame_base sh64_frame_base = {
2406 sh64_frame_base_address,
2407 sh64_frame_base_address,
2408 sh64_frame_base_address
2413 sh64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
2415 struct gdbarch *gdbarch;
2416 struct gdbarch_tdep *tdep;
2418 /* If there is already a candidate, use it. */
2419 arches = gdbarch_list_lookup_by_info (arches, &info);
2421 return arches->gdbarch;
2423 /* None found, create a new architecture from the information
2425 tdep = XMALLOC (struct gdbarch_tdep);
2426 gdbarch = gdbarch_alloc (&info, tdep);
2428 /* Determine the ABI */
2429 if (info.abfd && bfd_get_arch_size (info.abfd) == 64)
2431 /* If the ABI is the 64-bit one, it can only be sh-media. */
2432 tdep->sh_abi = SH_ABI_64;
2433 set_gdbarch_ptr_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2434 set_gdbarch_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2438 /* If the ABI is the 32-bit one it could be either media or
2440 tdep->sh_abi = SH_ABI_32;
2441 set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2442 set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2445 set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
2446 set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2447 set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2448 set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2449 set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
2450 set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2451 set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
2453 /* The number of real registers is the same whether we are in
2454 ISA16(compact) or ISA32(media). */
2455 set_gdbarch_num_regs (gdbarch, SIM_SH64_NR_REGS);
2456 set_gdbarch_sp_regnum (gdbarch, 15);
2457 set_gdbarch_pc_regnum (gdbarch, 64);
2458 set_gdbarch_fp0_regnum (gdbarch, SIM_SH64_FR0_REGNUM);
2459 set_gdbarch_num_pseudo_regs (gdbarch, NUM_PSEUDO_REGS_SH_MEDIA
2460 + NUM_PSEUDO_REGS_SH_COMPACT);
2462 set_gdbarch_register_name (gdbarch, sh64_register_name);
2463 set_gdbarch_register_type (gdbarch, sh64_register_type);
2465 set_gdbarch_pseudo_register_read (gdbarch, sh64_pseudo_register_read);
2466 set_gdbarch_pseudo_register_write (gdbarch, sh64_pseudo_register_write);
2468 set_gdbarch_breakpoint_from_pc (gdbarch, sh64_breakpoint_from_pc);
2470 set_gdbarch_print_insn (gdbarch, print_insn_sh);
2471 set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno);
2473 set_gdbarch_return_value (gdbarch, sh64_return_value);
2475 set_gdbarch_skip_prologue (gdbarch, sh64_skip_prologue);
2476 set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
2478 set_gdbarch_push_dummy_call (gdbarch, sh64_push_dummy_call);
2480 set_gdbarch_believe_pcc_promotion (gdbarch, 1);
2482 set_gdbarch_frame_align (gdbarch, sh64_frame_align);
2483 set_gdbarch_unwind_sp (gdbarch, sh64_unwind_sp);
2484 set_gdbarch_unwind_pc (gdbarch, sh64_unwind_pc);
2485 set_gdbarch_dummy_id (gdbarch, sh64_dummy_id);
2486 frame_base_set_default (gdbarch, &sh64_frame_base);
2488 set_gdbarch_print_registers_info (gdbarch, sh64_print_registers_info);
2490 set_gdbarch_elf_make_msymbol_special (gdbarch,
2491 sh64_elf_make_msymbol_special);
2493 /* Hook in ABI-specific overrides, if they have been registered. */
2494 gdbarch_init_osabi (info, gdbarch);
2496 dwarf2_append_unwinders (gdbarch);
2497 frame_unwind_append_unwinder (gdbarch, &sh64_frame_unwind);