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- /* Sequent Symmetry host interface, for GDB when running under Unix.
- Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* FIXME, some 387-specific items of use taken from i387-tdep.c -- ought to be
- merged back in. */
-
- #include "defs.h"
- #include "frame.h"
- #include "inferior.h"
- #include "symtab.h"
-
- #include <signal.h>
- #include <sys/param.h>
- #include <sys/user.h>
- #include <sys/dir.h>
- #include <sys/ioctl.h>
- #include <sys/stat.h>
- #include "gdbcore.h"
- #include <fcntl.h>
- #include <sgtty.h>
- #define TERMINAL struct sgttyb
-
- #include "gdbcore.h"
-
- void
- store_inferior_registers(regno)
- int regno;
- {
- struct pt_regset regs;
- int reg_tmp, i;
- extern char registers[];
-
- regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)];
- regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)];
- regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)];
- regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)];
- regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)];
- regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)];
- regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)];
- regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)];
- regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)];
- regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)];
- for (i = 0; i < 31; i++)
- {
- regs.pr_fpa.fpa_regs[i] =
- *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)];
- }
- PTRACE_WRITE_REGS (inferior_pid, (PTRACE_ARG3_TYPE) ®s);
- }
-
- void
- fetch_inferior_registers (regno)
- int regno;
- {
- int i;
- struct pt_regset regs;
- extern char registers[];
-
- registers_fetched ();
-
- PTRACE_READ_REGS (inferior_pid, (PTRACE_ARG3_TYPE) ®s);
- *(int *)®isters[REGISTER_BYTE(EAX_REGNUM)] = regs.pr_eax;
- *(int *)®isters[REGISTER_BYTE(EBX_REGNUM)] = regs.pr_ebx;
- *(int *)®isters[REGISTER_BYTE(ECX_REGNUM)] = regs.pr_ecx;
- *(int *)®isters[REGISTER_BYTE(EDX_REGNUM)] = regs.pr_edx;
- *(int *)®isters[REGISTER_BYTE(ESI_REGNUM)] = regs.pr_esi;
- *(int *)®isters[REGISTER_BYTE(EDI_REGNUM)] = regs.pr_edi;
- *(int *)®isters[REGISTER_BYTE(EBP_REGNUM)] = regs.pr_ebp;
- *(int *)®isters[REGISTER_BYTE(ESP_REGNUM)] = regs.pr_esp;
- *(int *)®isters[REGISTER_BYTE(EIP_REGNUM)] = regs.pr_eip;
- *(int *)®isters[REGISTER_BYTE(EFLAGS_REGNUM)] = regs.pr_flags;
- for (i = 0; i < FPA_NREGS; i++)
- {
- *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)] =
- regs.pr_fpa.fpa_regs[i];
- }
- memcpy (®isters[REGISTER_BYTE(ST0_REGNUM)], regs.pr_fpu.fpu_stack[0], 10);
- memcpy (®isters[REGISTER_BYTE(ST1_REGNUM)], regs.pr_fpu.fpu_stack[1], 10);
- memcpy (®isters[REGISTER_BYTE(ST2_REGNUM)], regs.pr_fpu.fpu_stack[2], 10);
- memcpy (®isters[REGISTER_BYTE(ST3_REGNUM)], regs.pr_fpu.fpu_stack[3], 10);
- memcpy (®isters[REGISTER_BYTE(ST4_REGNUM)], regs.pr_fpu.fpu_stack[4], 10);
- memcpy (®isters[REGISTER_BYTE(ST5_REGNUM)], regs.pr_fpu.fpu_stack[5], 10);
- memcpy (®isters[REGISTER_BYTE(ST6_REGNUM)], regs.pr_fpu.fpu_stack[6], 10);
- memcpy (®isters[REGISTER_BYTE(ST7_REGNUM)], regs.pr_fpu.fpu_stack[7], 10);
- }
-
- /* FIXME: This should be merged with i387-tdep.c as well. */
- static
- print_fpu_status(ep)
- struct pt_regset ep;
- {
- int i;
- int bothstatus;
- int top;
- int fpreg;
- unsigned char *p;
-
- printf_unfiltered("80387:");
- if (ep.pr_fpu.fpu_ip == 0) {
- printf_unfiltered(" not in use.\n");
- return;
- } else {
- printf_unfiltered("\n");
- }
- if (ep.pr_fpu.fpu_status != 0) {
- print_387_status_word (ep.pr_fpu.fpu_status);
- }
- print_387_control_word (ep.pr_fpu.fpu_control);
- printf_unfiltered ("last exception: ");
- printf_unfiltered ("opcode 0x%x; ", ep.pr_fpu.fpu_rsvd4);
- printf_unfiltered ("pc 0x%x:0x%x; ", ep.pr_fpu.fpu_cs, ep.pr_fpu.fpu_ip);
- printf_unfiltered ("operand 0x%x:0x%x\n", ep.pr_fpu.fpu_data_offset, ep.pr_fpu.fpu_op_sel);
-
- top = (ep.pr_fpu.fpu_status >> 11) & 7;
-
- printf_unfiltered ("regno tag msb lsb value\n");
- for (fpreg = 7; fpreg >= 0; fpreg--)
- {
- double val;
-
- printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : " ", fpreg);
-
- switch ((ep.pr_fpu.fpu_tag >> (fpreg * 2)) & 3)
- {
- case 0: printf_unfiltered ("valid "); break;
- case 1: printf_unfiltered ("zero "); break;
- case 2: printf_unfiltered ("trap "); break;
- case 3: printf_unfiltered ("empty "); break;
- }
- for (i = 9; i >= 0; i--)
- printf_unfiltered ("%02x", ep.pr_fpu.fpu_stack[fpreg][i]);
-
- i387_to_double (ep.pr_fpu.fpu_stack[fpreg], (char *)&val);
- printf_unfiltered (" %g\n", val);
- }
- if (ep.pr_fpu.fpu_rsvd1)
- warning ("rsvd1 is 0x%x\n", ep.pr_fpu.fpu_rsvd1);
- if (ep.pr_fpu.fpu_rsvd2)
- warning ("rsvd2 is 0x%x\n", ep.pr_fpu.fpu_rsvd2);
- if (ep.pr_fpu.fpu_rsvd3)
- warning ("rsvd3 is 0x%x\n", ep.pr_fpu.fpu_rsvd3);
- if (ep.pr_fpu.fpu_rsvd5)
- warning ("rsvd5 is 0x%x\n", ep.pr_fpu.fpu_rsvd5);
- }
-
-
- print_1167_control_word(pcr)
- unsigned int pcr;
-
- {
- int pcr_tmp;
-
- pcr_tmp = pcr & FPA_PCR_MODE;
- printf_unfiltered("\tMODE= %#x; RND= %#x ", pcr_tmp, pcr_tmp & 12);
- switch (pcr_tmp & 12) {
- case 0:
- printf_unfiltered("RN (Nearest Value)");
- break;
- case 1:
- printf_unfiltered("RZ (Zero)");
- break;
- case 2:
- printf_unfiltered("RP (Positive Infinity)");
- break;
- case 3:
- printf_unfiltered("RM (Negative Infinity)");
- break;
- }
- printf_unfiltered("; IRND= %d ", pcr_tmp & 2);
- if (0 == pcr_tmp & 2) {
- printf_unfiltered("(same as RND)\n");
- } else {
- printf_unfiltered("(toward zero)\n");
- }
- pcr_tmp = pcr & FPA_PCR_EM;
- printf_unfiltered("\tEM= %#x", pcr_tmp);
- if (pcr_tmp & FPA_PCR_EM_DM) printf_unfiltered(" DM");
- if (pcr_tmp & FPA_PCR_EM_UOM) printf_unfiltered(" UOM");
- if (pcr_tmp & FPA_PCR_EM_PM) printf_unfiltered(" PM");
- if (pcr_tmp & FPA_PCR_EM_UM) printf_unfiltered(" UM");
- if (pcr_tmp & FPA_PCR_EM_OM) printf_unfiltered(" OM");
- if (pcr_tmp & FPA_PCR_EM_ZM) printf_unfiltered(" ZM");
- if (pcr_tmp & FPA_PCR_EM_IM) printf_unfiltered(" IM");
- printf_unfiltered("\n");
- pcr_tmp = FPA_PCR_CC;
- printf_unfiltered("\tCC= %#x", pcr_tmp);
- if (pcr_tmp & FPA_PCR_20MHZ) printf_unfiltered(" 20MHZ");
- if (pcr_tmp & FPA_PCR_CC_Z) printf_unfiltered(" Z");
- if (pcr_tmp & FPA_PCR_CC_C2) printf_unfiltered(" C2");
- if (pcr_tmp & FPA_PCR_CC_C1) printf_unfiltered(" C1");
- switch (pcr_tmp) {
- case FPA_PCR_CC_Z:
- printf_unfiltered(" (Equal)");
- break;
- case FPA_PCR_CC_C1:
- printf_unfiltered(" (Less than)");
- break;
- case 0:
- printf_unfiltered(" (Greater than)");
- break;
- case FPA_PCR_CC_Z | FPA_PCR_CC_C1 | FPA_PCR_CC_C2:
- printf_unfiltered(" (Unordered)");
- break;
- default:
- printf_unfiltered(" (Undefined)");
- break;
- }
- printf_unfiltered("\n");
- pcr_tmp = pcr & FPA_PCR_AE;
- printf_unfiltered("\tAE= %#x", pcr_tmp);
- if (pcr_tmp & FPA_PCR_AE_DE) printf_unfiltered(" DE");
- if (pcr_tmp & FPA_PCR_AE_UOE) printf_unfiltered(" UOE");
- if (pcr_tmp & FPA_PCR_AE_PE) printf_unfiltered(" PE");
- if (pcr_tmp & FPA_PCR_AE_UE) printf_unfiltered(" UE");
- if (pcr_tmp & FPA_PCR_AE_OE) printf_unfiltered(" OE");
- if (pcr_tmp & FPA_PCR_AE_ZE) printf_unfiltered(" ZE");
- if (pcr_tmp & FPA_PCR_AE_EE) printf_unfiltered(" EE");
- if (pcr_tmp & FPA_PCR_AE_IE) printf_unfiltered(" IE");
- printf_unfiltered("\n");
- }
-
- print_1167_regs(regs)
- long regs[FPA_NREGS];
-
- {
- int i;
-
- union {
- double d;
- long l[2];
- } xd;
- union {
- float f;
- long l;
- } xf;
-
-
- for (i = 0; i < FPA_NREGS; i++) {
- xf.l = regs[i];
- printf_unfiltered("%%fp%d: raw= %#x, single= %f", i+1, regs[i], xf.f);
- if (!(i & 1)) {
- printf_unfiltered("\n");
- } else {
- xd.l[1] = regs[i];
- xd.l[0] = regs[i+1];
- printf_unfiltered(", double= %f\n", xd.d);
- }
- }
- }
-
- print_fpa_status(ep)
- struct pt_regset ep;
-
- {
-
- printf_unfiltered("WTL 1167:");
- if (ep.pr_fpa.fpa_pcr !=0) {
- printf_unfiltered("\n");
- print_1167_control_word(ep.pr_fpa.fpa_pcr);
- print_1167_regs(ep.pr_fpa.fpa_regs);
- } else {
- printf_unfiltered(" not in use.\n");
- }
- }
-
- i386_float_info ()
- {
- char ubuf[UPAGES*NBPG];
- struct pt_regset regset;
-
- if (have_inferior_p())
- {
- PTRACE_READ_REGS (inferior_pid, (PTRACE_ARG3_TYPE) ®set);
- }
- else
- {
- int corechan = bfd_cache_lookup (core_bfd);
- if (lseek (corechan, 0, 0) < 0)
- {
- perror ("seek on core file");
- }
- if (myread (corechan, ubuf, UPAGES*NBPG) < 0)
- {
- perror ("read on core file");
- }
- /* only interested in the floating point registers */
- regset.pr_fpu = ((struct user *) ubuf)->u_fpusave;
- regset.pr_fpa = ((struct user *) ubuf)->u_fpasave;
- }
- print_fpu_status(regset);
- print_fpa_status(regset);
- }
-