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