| 1 | /* Sequent Symmetry host interface, for GDB when running under Unix. |
| 2 | Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 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. |
| 10 | |
| 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. |
| 15 | |
| 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | /* FIXME, some 387-specific items of use taken from i387-tdep.c -- ought to be |
| 21 | merged back in. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "frame.h" |
| 25 | #include "inferior.h" |
| 26 | #include "symtab.h" |
| 27 | |
| 28 | #include <signal.h> |
| 29 | #include <sys/param.h> |
| 30 | #include <sys/user.h> |
| 31 | #include <sys/dir.h> |
| 32 | #include <sys/ioctl.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include "gdbcore.h" |
| 35 | #include <fcntl.h> |
| 36 | #include <sgtty.h> |
| 37 | #define TERMINAL struct sgttyb |
| 38 | |
| 39 | #include "gdbcore.h" |
| 40 | |
| 41 | void |
| 42 | store_inferior_registers(regno) |
| 43 | int regno; |
| 44 | { |
| 45 | struct pt_regset regs; |
| 46 | int reg_tmp, i; |
| 47 | extern char registers[]; |
| 48 | |
| 49 | regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)]; |
| 50 | regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)]; |
| 51 | regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)]; |
| 52 | regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)]; |
| 53 | regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)]; |
| 54 | regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)]; |
| 55 | regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)]; |
| 56 | regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)]; |
| 57 | regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)]; |
| 58 | regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)]; |
| 59 | for (i = 0; i < 31; i++) |
| 60 | { |
| 61 | regs.pr_fpa.fpa_regs[i] = |
| 62 | *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)]; |
| 63 | } |
| 64 | PTRACE_WRITE_REGS (inferior_pid, (PTRACE_ARG3_TYPE) ®s); |
| 65 | } |
| 66 | |
| 67 | void |
| 68 | fetch_inferior_registers (regno) |
| 69 | int regno; |
| 70 | { |
| 71 | int i; |
| 72 | struct pt_regset regs; |
| 73 | extern char registers[]; |
| 74 | |
| 75 | registers_fetched (); |
| 76 | |
| 77 | PTRACE_READ_REGS (inferior_pid, (PTRACE_ARG3_TYPE) ®s); |
| 78 | *(int *)®isters[REGISTER_BYTE(EAX_REGNUM)] = regs.pr_eax; |
| 79 | *(int *)®isters[REGISTER_BYTE(EBX_REGNUM)] = regs.pr_ebx; |
| 80 | *(int *)®isters[REGISTER_BYTE(ECX_REGNUM)] = regs.pr_ecx; |
| 81 | *(int *)®isters[REGISTER_BYTE(EDX_REGNUM)] = regs.pr_edx; |
| 82 | *(int *)®isters[REGISTER_BYTE(ESI_REGNUM)] = regs.pr_esi; |
| 83 | *(int *)®isters[REGISTER_BYTE(EDI_REGNUM)] = regs.pr_edi; |
| 84 | *(int *)®isters[REGISTER_BYTE(EBP_REGNUM)] = regs.pr_ebp; |
| 85 | *(int *)®isters[REGISTER_BYTE(ESP_REGNUM)] = regs.pr_esp; |
| 86 | *(int *)®isters[REGISTER_BYTE(EIP_REGNUM)] = regs.pr_eip; |
| 87 | *(int *)®isters[REGISTER_BYTE(EFLAGS_REGNUM)] = regs.pr_flags; |
| 88 | for (i = 0; i < FPA_NREGS; i++) |
| 89 | { |
| 90 | *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)] = |
| 91 | regs.pr_fpa.fpa_regs[i]; |
| 92 | } |
| 93 | memcpy (®isters[REGISTER_BYTE(ST0_REGNUM)], regs.pr_fpu.fpu_stack[0], 10); |
| 94 | memcpy (®isters[REGISTER_BYTE(ST1_REGNUM)], regs.pr_fpu.fpu_stack[1], 10); |
| 95 | memcpy (®isters[REGISTER_BYTE(ST2_REGNUM)], regs.pr_fpu.fpu_stack[2], 10); |
| 96 | memcpy (®isters[REGISTER_BYTE(ST3_REGNUM)], regs.pr_fpu.fpu_stack[3], 10); |
| 97 | memcpy (®isters[REGISTER_BYTE(ST4_REGNUM)], regs.pr_fpu.fpu_stack[4], 10); |
| 98 | memcpy (®isters[REGISTER_BYTE(ST5_REGNUM)], regs.pr_fpu.fpu_stack[5], 10); |
| 99 | memcpy (®isters[REGISTER_BYTE(ST6_REGNUM)], regs.pr_fpu.fpu_stack[6], 10); |
| 100 | memcpy (®isters[REGISTER_BYTE(ST7_REGNUM)], regs.pr_fpu.fpu_stack[7], 10); |
| 101 | } |
| 102 | \f |
| 103 | /* FIXME: This should be merged with i387-tdep.c as well. */ |
| 104 | static |
| 105 | print_fpu_status(ep) |
| 106 | struct pt_regset ep; |
| 107 | { |
| 108 | int i; |
| 109 | int bothstatus; |
| 110 | int top; |
| 111 | int fpreg; |
| 112 | unsigned char *p; |
| 113 | |
| 114 | printf_unfiltered("80387:"); |
| 115 | if (ep.pr_fpu.fpu_ip == 0) { |
| 116 | printf_unfiltered(" not in use.\n"); |
| 117 | return; |
| 118 | } else { |
| 119 | printf_unfiltered("\n"); |
| 120 | } |
| 121 | if (ep.pr_fpu.fpu_status != 0) { |
| 122 | print_387_status_word (ep.pr_fpu.fpu_status); |
| 123 | } |
| 124 | print_387_control_word (ep.pr_fpu.fpu_control); |
| 125 | printf_unfiltered ("last exception: "); |
| 126 | printf_unfiltered ("opcode 0x%x; ", ep.pr_fpu.fpu_rsvd4); |
| 127 | printf_unfiltered ("pc 0x%x:0x%x; ", ep.pr_fpu.fpu_cs, ep.pr_fpu.fpu_ip); |
| 128 | printf_unfiltered ("operand 0x%x:0x%x\n", ep.pr_fpu.fpu_data_offset, ep.pr_fpu.fpu_op_sel); |
| 129 | |
| 130 | top = (ep.pr_fpu.fpu_status >> 11) & 7; |
| 131 | |
| 132 | printf_unfiltered ("regno tag msb lsb value\n"); |
| 133 | for (fpreg = 7; fpreg >= 0; fpreg--) |
| 134 | { |
| 135 | double val; |
| 136 | |
| 137 | printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : " ", fpreg); |
| 138 | |
| 139 | switch ((ep.pr_fpu.fpu_tag >> (fpreg * 2)) & 3) |
| 140 | { |
| 141 | case 0: printf_unfiltered ("valid "); break; |
| 142 | case 1: printf_unfiltered ("zero "); break; |
| 143 | case 2: printf_unfiltered ("trap "); break; |
| 144 | case 3: printf_unfiltered ("empty "); break; |
| 145 | } |
| 146 | for (i = 9; i >= 0; i--) |
| 147 | printf_unfiltered ("%02x", ep.pr_fpu.fpu_stack[fpreg][i]); |
| 148 | |
| 149 | i387_to_double (ep.pr_fpu.fpu_stack[fpreg], (char *)&val); |
| 150 | printf_unfiltered (" %g\n", val); |
| 151 | } |
| 152 | if (ep.pr_fpu.fpu_rsvd1) |
| 153 | warning ("rsvd1 is 0x%x\n", ep.pr_fpu.fpu_rsvd1); |
| 154 | if (ep.pr_fpu.fpu_rsvd2) |
| 155 | warning ("rsvd2 is 0x%x\n", ep.pr_fpu.fpu_rsvd2); |
| 156 | if (ep.pr_fpu.fpu_rsvd3) |
| 157 | warning ("rsvd3 is 0x%x\n", ep.pr_fpu.fpu_rsvd3); |
| 158 | if (ep.pr_fpu.fpu_rsvd5) |
| 159 | warning ("rsvd5 is 0x%x\n", ep.pr_fpu.fpu_rsvd5); |
| 160 | } |
| 161 | |
| 162 | |
| 163 | print_1167_control_word(pcr) |
| 164 | unsigned int pcr; |
| 165 | |
| 166 | { |
| 167 | int pcr_tmp; |
| 168 | |
| 169 | pcr_tmp = pcr & FPA_PCR_MODE; |
| 170 | printf_unfiltered("\tMODE= %#x; RND= %#x ", pcr_tmp, pcr_tmp & 12); |
| 171 | switch (pcr_tmp & 12) { |
| 172 | case 0: |
| 173 | printf_unfiltered("RN (Nearest Value)"); |
| 174 | break; |
| 175 | case 1: |
| 176 | printf_unfiltered("RZ (Zero)"); |
| 177 | break; |
| 178 | case 2: |
| 179 | printf_unfiltered("RP (Positive Infinity)"); |
| 180 | break; |
| 181 | case 3: |
| 182 | printf_unfiltered("RM (Negative Infinity)"); |
| 183 | break; |
| 184 | } |
| 185 | printf_unfiltered("; IRND= %d ", pcr_tmp & 2); |
| 186 | if (0 == pcr_tmp & 2) { |
| 187 | printf_unfiltered("(same as RND)\n"); |
| 188 | } else { |
| 189 | printf_unfiltered("(toward zero)\n"); |
| 190 | } |
| 191 | pcr_tmp = pcr & FPA_PCR_EM; |
| 192 | printf_unfiltered("\tEM= %#x", pcr_tmp); |
| 193 | if (pcr_tmp & FPA_PCR_EM_DM) printf_unfiltered(" DM"); |
| 194 | if (pcr_tmp & FPA_PCR_EM_UOM) printf_unfiltered(" UOM"); |
| 195 | if (pcr_tmp & FPA_PCR_EM_PM) printf_unfiltered(" PM"); |
| 196 | if (pcr_tmp & FPA_PCR_EM_UM) printf_unfiltered(" UM"); |
| 197 | if (pcr_tmp & FPA_PCR_EM_OM) printf_unfiltered(" OM"); |
| 198 | if (pcr_tmp & FPA_PCR_EM_ZM) printf_unfiltered(" ZM"); |
| 199 | if (pcr_tmp & FPA_PCR_EM_IM) printf_unfiltered(" IM"); |
| 200 | printf_unfiltered("\n"); |
| 201 | pcr_tmp = FPA_PCR_CC; |
| 202 | printf_unfiltered("\tCC= %#x", pcr_tmp); |
| 203 | if (pcr_tmp & FPA_PCR_20MHZ) printf_unfiltered(" 20MHZ"); |
| 204 | if (pcr_tmp & FPA_PCR_CC_Z) printf_unfiltered(" Z"); |
| 205 | if (pcr_tmp & FPA_PCR_CC_C2) printf_unfiltered(" C2"); |
| 206 | if (pcr_tmp & FPA_PCR_CC_C1) printf_unfiltered(" C1"); |
| 207 | switch (pcr_tmp) { |
| 208 | case FPA_PCR_CC_Z: |
| 209 | printf_unfiltered(" (Equal)"); |
| 210 | break; |
| 211 | case FPA_PCR_CC_C1: |
| 212 | printf_unfiltered(" (Less than)"); |
| 213 | break; |
| 214 | case 0: |
| 215 | printf_unfiltered(" (Greater than)"); |
| 216 | break; |
| 217 | case FPA_PCR_CC_Z | FPA_PCR_CC_C1 | FPA_PCR_CC_C2: |
| 218 | printf_unfiltered(" (Unordered)"); |
| 219 | break; |
| 220 | default: |
| 221 | printf_unfiltered(" (Undefined)"); |
| 222 | break; |
| 223 | } |
| 224 | printf_unfiltered("\n"); |
| 225 | pcr_tmp = pcr & FPA_PCR_AE; |
| 226 | printf_unfiltered("\tAE= %#x", pcr_tmp); |
| 227 | if (pcr_tmp & FPA_PCR_AE_DE) printf_unfiltered(" DE"); |
| 228 | if (pcr_tmp & FPA_PCR_AE_UOE) printf_unfiltered(" UOE"); |
| 229 | if (pcr_tmp & FPA_PCR_AE_PE) printf_unfiltered(" PE"); |
| 230 | if (pcr_tmp & FPA_PCR_AE_UE) printf_unfiltered(" UE"); |
| 231 | if (pcr_tmp & FPA_PCR_AE_OE) printf_unfiltered(" OE"); |
| 232 | if (pcr_tmp & FPA_PCR_AE_ZE) printf_unfiltered(" ZE"); |
| 233 | if (pcr_tmp & FPA_PCR_AE_EE) printf_unfiltered(" EE"); |
| 234 | if (pcr_tmp & FPA_PCR_AE_IE) printf_unfiltered(" IE"); |
| 235 | printf_unfiltered("\n"); |
| 236 | } |
| 237 | |
| 238 | print_1167_regs(regs) |
| 239 | long regs[FPA_NREGS]; |
| 240 | |
| 241 | { |
| 242 | int i; |
| 243 | |
| 244 | union { |
| 245 | double d; |
| 246 | long l[2]; |
| 247 | } xd; |
| 248 | union { |
| 249 | float f; |
| 250 | long l; |
| 251 | } xf; |
| 252 | |
| 253 | |
| 254 | for (i = 0; i < FPA_NREGS; i++) { |
| 255 | xf.l = regs[i]; |
| 256 | printf_unfiltered("%%fp%d: raw= %#x, single= %f", i+1, regs[i], xf.f); |
| 257 | if (!(i & 1)) { |
| 258 | printf_unfiltered("\n"); |
| 259 | } else { |
| 260 | xd.l[1] = regs[i]; |
| 261 | xd.l[0] = regs[i+1]; |
| 262 | printf_unfiltered(", double= %f\n", xd.d); |
| 263 | } |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | print_fpa_status(ep) |
| 268 | struct pt_regset ep; |
| 269 | |
| 270 | { |
| 271 | |
| 272 | printf_unfiltered("WTL 1167:"); |
| 273 | if (ep.pr_fpa.fpa_pcr !=0) { |
| 274 | printf_unfiltered("\n"); |
| 275 | print_1167_control_word(ep.pr_fpa.fpa_pcr); |
| 276 | print_1167_regs(ep.pr_fpa.fpa_regs); |
| 277 | } else { |
| 278 | printf_unfiltered(" not in use.\n"); |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | i386_float_info () |
| 283 | { |
| 284 | char ubuf[UPAGES*NBPG]; |
| 285 | struct pt_regset regset; |
| 286 | |
| 287 | if (have_inferior_p()) |
| 288 | { |
| 289 | PTRACE_READ_REGS (inferior_pid, (PTRACE_ARG3_TYPE) ®set); |
| 290 | } |
| 291 | else |
| 292 | { |
| 293 | int corechan = bfd_cache_lookup (core_bfd); |
| 294 | if (lseek (corechan, 0, 0) < 0) |
| 295 | { |
| 296 | perror ("seek on core file"); |
| 297 | } |
| 298 | if (myread (corechan, ubuf, UPAGES*NBPG) < 0) |
| 299 | { |
| 300 | perror ("read on core file"); |
| 301 | } |
| 302 | /* only interested in the floating point registers */ |
| 303 | regset.pr_fpu = ((struct user *) ubuf)->u_fpusave; |
| 304 | regset.pr_fpa = ((struct user *) ubuf)->u_fpasave; |
| 305 | } |
| 306 | print_fpu_status(regset); |
| 307 | print_fpa_status(regset); |
| 308 | } |