1 /* Native support for Motorola 88k running Harris CX/UX.
2 Copyright 1988, 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #include <sys/types.h>
26 #include <sys/param.h>
37 #ifndef USER /* added to support BCS ptrace_user */
38 #define USER ptrace_user
40 #include <sys/ioctl.h>
49 #include <sys/ptrace.h>
51 /* CX/UX provides them already, but as word offsets instead of char offsets */
52 #define SXIP_OFFSET (PT_SXIP * 4)
53 #define SNIP_OFFSET (PT_SNIP * 4)
54 #define SFIP_OFFSET (PT_SFIP * 4)
55 #define PSR_OFFSET (PT_PSR * sizeof(int))
56 #define FPSR_OFFSET (PT_FPSR * sizeof(int))
57 #define FPCR_OFFSET (PT_FPCR * sizeof(int))
59 #define XREGADDR(r) (((char *)&u.pt_x0-(char *)&u) + \
60 ((r)-X0_REGNUM)*sizeof(X_REGISTER_RAW_TYPE))
62 extern int have_symbol_file_p ();
64 extern jmp_buf stack_jmp;
69 fetch_inferior_registers (regno)
70 int regno; /* Original value discarded */
72 register unsigned int regaddr;
73 char buf[MAX_REGISTER_RAW_SIZE];
79 offset = (char *) &u.pt_r0 - (char *) &u;
80 regaddr = offset; /* byte offset to r0; */
82 /* offset = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) - KERNEL_U_ADDR; */
83 for (regno = 0; regno < PC_REGNUM; regno++)
85 /*regaddr = register_addr (regno, offset); */
88 for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
90 *(int *) &buf[i] = ptrace (3, inferior_pid,
91 (PTRACE_ARG3_TYPE) regaddr, 0);
92 regaddr += sizeof (int);
94 supply_register (regno, buf);
96 /* now load up registers 32-37; special pc registers */
97 *(int *) &buf[0] = ptrace (3, inferior_pid,
98 (PTRACE_ARG3_TYPE) PSR_OFFSET, 0);
99 supply_register (PSR_REGNUM, buf);
100 *(int *) &buf[0] = ptrace (3, inferior_pid,
101 (PTRACE_ARG3_TYPE) FPSR_OFFSET, 0);
102 supply_register (FPSR_REGNUM, buf);
103 *(int *) &buf[0] = ptrace (3, inferior_pid,
104 (PTRACE_ARG3_TYPE) FPCR_OFFSET, 0);
105 supply_register (FPCR_REGNUM, buf);
106 *(int *) &buf[0] = ptrace (3, inferior_pid,
107 (PTRACE_ARG3_TYPE) SXIP_OFFSET, 0);
108 supply_register (SXIP_REGNUM, buf);
109 *(int *) &buf[0] = ptrace (3, inferior_pid,
110 (PTRACE_ARG3_TYPE) SNIP_OFFSET, 0);
111 supply_register (SNIP_REGNUM, buf);
112 *(int *) &buf[0] = ptrace (3, inferior_pid,
113 (PTRACE_ARG3_TYPE) SFIP_OFFSET, 0);
114 supply_register (SFIP_REGNUM, buf);
116 if (target_is_m88110)
118 for (regaddr = XREGADDR (X0_REGNUM), regno = X0_REGNUM;
120 regno++, regaddr += 16)
122 X_REGISTER_RAW_TYPE xval;
124 *(int *) &xval.w1 = ptrace (3, inferior_pid,
125 (PTRACE_ARG3_TYPE) regaddr, 0);
126 *(int *) &xval.w2 = ptrace (3, inferior_pid,
127 (PTRACE_ARG3_TYPE) (regaddr + 4), 0);
128 *(int *) &xval.w3 = ptrace (3, inferior_pid,
129 (PTRACE_ARG3_TYPE) (regaddr + 8), 0);
130 *(int *) &xval.w4 = ptrace (3, inferior_pid,
131 (PTRACE_ARG3_TYPE) (regaddr + 12), 0);
132 supply_register (regno, (void *) &xval);
137 /* Store our register values back into the inferior.
138 If REGNO is -1, do this for all registers.
139 Otherwise, REGNO specifies which register (so we can save time). */
142 store_inferior_registers (regno)
145 register unsigned int regaddr;
150 unsigned int offset = (char *) &u.pt_r0 - (char *) &u;
154 /* Don't try to deal with EXIP_REGNUM or ENIP_REGNUM, because I think either
155 svr3 doesn't run on an 88110, or the kernel isolates the different (not
156 completely sure this is true, but seems to be. */
159 /* regaddr = register_addr (regno, offset); */
160 if (regno < PC_REGNUM)
162 regaddr = offset + regno * sizeof (int);
164 ptrace (6, inferior_pid,
165 (PTRACE_ARG3_TYPE) regaddr, read_register (regno));
168 sprintf (buf, "writing register number %d", regno);
169 perror_with_name (buf);
172 else if (regno == PSR_REGNUM)
173 ptrace (6, inferior_pid,
174 (PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
175 else if (regno == FPSR_REGNUM)
176 ptrace (6, inferior_pid,
177 (PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
178 else if (regno == FPCR_REGNUM)
179 ptrace (6, inferior_pid,
180 (PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
181 else if (regno == SXIP_REGNUM)
182 ptrace (6, inferior_pid,
183 (PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (regno));
184 else if (regno == SNIP_REGNUM)
185 ptrace (6, inferior_pid,
186 (PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (regno));
187 else if (regno == SFIP_REGNUM)
188 ptrace (6, inferior_pid,
189 (PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (regno));
190 else if (target_is_m88110 && regno < NUM_REGS)
192 X_REGISTER_RAW_TYPE xval;
194 read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
195 sizeof (X_REGISTER_RAW_TYPE));
196 regaddr = XREGADDR (regno);
197 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
198 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 4, xval.w2);
199 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 8, xval.w3);
200 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 12, xval.w4);
203 printf_unfiltered ("Bad register number for store_inferior routine\n");
207 for (regno = 0; regno < PC_REGNUM; regno++)
209 /* regaddr = register_addr (regno, offset); */
211 regaddr = offset + regno * sizeof (int);
212 ptrace (6, inferior_pid,
213 (PTRACE_ARG3_TYPE) regaddr, read_register (regno));
216 sprintf (buf, "writing register number %d", regno);
217 perror_with_name (buf);
220 ptrace (6, inferior_pid,
221 (PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
222 ptrace (6, inferior_pid,
223 (PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
224 ptrace (6, inferior_pid,
225 (PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
226 ptrace (6, inferior_pid,
227 (PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (SXIP_REGNUM));
228 ptrace (6, inferior_pid,
229 (PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (SNIP_REGNUM));
230 ptrace (6, inferior_pid,
231 (PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (SFIP_REGNUM));
232 if (target_is_m88110)
234 for (regno = X0_REGNUM; regno < NUM_REGS; regno++)
236 X_REGISTER_RAW_TYPE xval;
238 read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
239 sizeof (X_REGISTER_RAW_TYPE));
240 regaddr = XREGADDR (regno);
241 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
242 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 4), xval.w2);
243 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 8), xval.w3);
244 ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 12), xval.w4);
250 /* blockend is the address of the end of the user structure */
252 m88k_register_u_addr (blockend, regnum)
253 int blockend, regnum;
256 int ustart = blockend - sizeof (struct USER);
258 if (regnum < PSR_REGNUM)
259 return (ustart + ((int) &u.pt_r0 - (int) &u) +
260 REGISTER_SIZE * regnum);
261 else if (regnum == PSR_REGNUM)
262 return (ustart + ((int) &u.pt_psr) - (int) &u);
263 else if (regnum == FPSR_REGNUM)
264 return (ustart + ((int) &u.pt_fpsr) - (int) &u);
265 else if (regnum == FPCR_REGNUM)
266 return (ustart + ((int) &u.pt_fpcr) - (int) &u);
267 else if (regnum == SXIP_REGNUM)
268 return (ustart + SXIP_OFFSET);
269 else if (regnum == SNIP_REGNUM)
270 return (ustart + SNIP_OFFSET);
271 else if (regnum == SFIP_REGNUM)
272 return (ustart + SFIP_OFFSET);
273 else if (target_is_m88110)
274 return (ustart + ((int) &u.pt_x0 - (int) &u) + /* Must be X register */
275 sizeof (u.pt_x0) * (regnum - X0_REGNUM));
277 return (blockend + REGISTER_SIZE * regnum);
282 #include <sys/procfs.h>
284 /* Given a pointer to a general register set in /proc format (gregset_t *),
285 unpack the register contents and supply them as gdb's idea of the current
289 supply_gregset (gregsetp)
293 register greg_t *regp = (greg_t *) gregsetp;
295 for (regi = 0; regi <= SP_REGNUM; regi++)
296 supply_register (regi, (char *) (regp + regi));
298 supply_register (SXIP_REGNUM, (char *) (regp + R_XIP));
299 supply_register (SNIP_REGNUM, (char *) (regp + R_NIP));
300 supply_register (SFIP_REGNUM, (char *) (regp + R_FIP));
301 supply_register (PSR_REGNUM, (char *) (regp + R_PSR));
302 supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
303 supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
307 fill_gregset (gregsetp, regno)
312 register greg_t *regp = (greg_t *) gregsetp;
314 for (regi = 0; regi <= R_R31; regi++)
315 if ((regno == -1) || (regno == regi))
316 *(regp + regi) = *(int *) ®isters[REGISTER_BYTE (regi)];
318 if ((regno == -1) || (regno == SXIP_REGNUM))
319 *(regp + R_XIP) = *(int *) ®isters[REGISTER_BYTE (SXIP_REGNUM)];
320 if ((regno == -1) || (regno == SNIP_REGNUM))
321 *(regp + R_NIP) = *(int *) ®isters[REGISTER_BYTE (SNIP_REGNUM)];
322 if ((regno == -1) || (regno == SFIP_REGNUM))
323 *(regp + R_FIP) = *(int *) ®isters[REGISTER_BYTE (SFIP_REGNUM)];
324 if ((regno == -1) || (regno == PSR_REGNUM))
325 *(regp + R_PSR) = *(int *) ®isters[REGISTER_BYTE (PSR_REGNUM)];
326 if ((regno == -1) || (regno == FPSR_REGNUM))
327 *(regp + R_FPSR) = *(int *) ®isters[REGISTER_BYTE (FPSR_REGNUM)];
328 if ((regno == -1) || (regno == FPCR_REGNUM))
329 *(regp + R_FPCR) = *(int *) ®isters[REGISTER_BYTE (FPCR_REGNUM)];
332 #endif /* USE_PROC_FS */
334 /* This support adds the equivalent of adb's % command. When
335 the `add-shared-symbol-files' command is given, this routine scans
336 the dynamic linker's link map and reads the minimal symbols
337 from each shared object file listed in the map. */
341 unsigned long l_addr; /* address at which object is mapped */
342 char *l_name; /* full name of loaded object */
343 void *l_ld; /* dynamic structure of object */
344 struct link_map *l_next; /* next link object */
345 struct link_map *l_prev; /* previous link object */
348 #define LINKS_MAP_POINTER "_ld_tail"
349 #define LIBC_FILE "/usr/lib/libc.so.1"
350 #define SHARED_OFFSET 0xf0001000
353 #define PATH_MAX 1023 /* maximum size of path name on OS */
357 add_shared_symbol_files ()
360 struct link_map *ld_map, *lm, lms;
361 struct minimal_symbol *minsym;
362 struct objfile *objfile;
367 warning ("The program has not yet been started.");
371 objfile = symbol_file_add (LIBC_FILE, 0, 0, 0, 0, 1, 0, 0);
372 minsym = lookup_minimal_symbol (LINKS_MAP_POINTER, objfile);
374 ld_map = (struct link_map *)
375 read_memory_integer (((int) SYMBOL_VALUE_ADDRESS (minsym) + SHARED_OFFSET), 4);
381 read_memory ((CORE_ADDR) lm, (char *) &lms, sizeof (struct link_map));
384 if (target_read_string ((CORE_ADDR) lms.l_name, &path_name,
385 PATH_MAX, &local_errno))
387 symbol_file_add (path_name, 1, lms.l_addr, 0, 0, 0, 0, 0);
391 /* traverse links in reverse order so that we get the
392 the symbols the user actually gets. */
396 /* Getting new symbols may change our opinion about what is
398 reinit_frame_cache ();
403 #include <sys/regset.h>
406 m88k_harris_core_register_addr (regno, reg_ptr)
409 unsigned int word_offset;
414 word_offset = R_EPSR;
417 word_offset = R_FPSR;
420 word_offset = R_FPCR;
423 word_offset = R_EXIP;
426 word_offset = R_ENIP;
429 word_offset = R_EFIP;
432 if (regno <= FP_REGNUM)
435 word_offset = ((regno - X0_REGNUM) * 4);
437 return (word_offset * 4);
443 _initialize_m88k_nat ()
446 /* Enable 88110 support, as we don't support the 88100 under ES/MP. */
448 target_is_m88110 = 1;
449 #elif defined(_CX_UX)
450 /* Determine whether we're running on an 88100 or an 88110. */
451 target_is_m88110 = (sinfo (SYSMACHINE, 0) == SYS5800);
456 /* Given a pointer to a general register set in /proc format (gregset_t *),
457 unpack the register contents and supply them as gdb's idea of the current
461 supply_gregset (gregsetp)
465 register greg_t *regp = (greg_t *) gregsetp;
467 for (regi = 0; regi < R_R31; regi++)
469 supply_register (regi, (char *) (regp + regi));
471 supply_register (PSR_REGNUM, (char *) (regp + R_EPSR));
472 supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
473 supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
474 supply_register (SXIP_REGNUM, (char *) (regp + R_EXIP));
475 supply_register (SNIP_REGNUM, (char *) (regp + R_ENIP));
476 supply_register (SFIP_REGNUM, (char *) (regp + R_EFIP));
479 /* Given a pointer to a floating point register set in /proc format
480 (fpregset_t *), unpack the register contents and supply them as gdb's
481 idea of the current floating point register values. */
484 supply_fpregset (fpregsetp)
485 fpregset_t *fpregsetp;
490 for (regi = FP0_REGNUM; regi <= FPLAST_REGNUM; regi++)
492 from = (char *) &((*fpregsetp)[regi - FP0_REGNUM]);
493 supply_register (regi, from);
501 #include <sys/regset.h>
504 m88k_harris_core_register_addr (int regno, int reg_ptr)
506 unsigned int word_offset;
514 word_offset = R_FPSR;
517 word_offset = R_FPCR;
529 if (regno <= FP_REGNUM)
532 word_offset = ((regno - X0_REGNUM) * 4) + R_X0;
534 return (word_offset * 4);