-/* 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[];
-
-#if 0
- /* PREPARE_TO_STORE deals with this. */
- if (-1 == regno)
- {
-#endif
- 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)];
- }
-#if 0
- }
- else
- {
- reg_tmp = *(int *)®isters[REGISTER_BYTE(regno)];
- ptrace(XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®s, 0);
- switch (regno)
- {
- case 0:
- regs.pr_eax = *(int *)®isters[REGISTER_BYTE(0)];
- break;
- case 5:
- regs.pr_ebx = *(int *)®isters[REGISTER_BYTE(5)];
- break;
- case 2:
- regs.pr_ecx = *(int *)®isters[REGISTER_BYTE(2)];
- break;
- case 1:
- regs.pr_edx = *(int *)®isters[REGISTER_BYTE(1)];
- break;
- case 6:
- regs.pr_esi = *(int *)®isters[REGISTER_BYTE(6)];
- break;
- case 7:
- regs.pr_edi = *(int *)®isters[REGISTER_BYTE(7)];
- break;
- case 15:
- regs.pr_ebp = *(int *)®isters[REGISTER_BYTE(15)];
- break;
- case 14:
- regs.pr_esp = *(int *)®isters[REGISTER_BYTE(14)];
- break;
- case 16:
- regs.pr_eip = *(int *)®isters[REGISTER_BYTE(16)];
- break;
- case 17:
- regs.pr_flags = *(int *)®isters[REGISTER_BYTE(17)];
- break;
- }
- }
-#endif /* 0 */
- ptrace(XPT_WREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®s, 0);
-}
-
-void
-fetch_inferior_registers (regno)
- int regno;
-{
- int i;
- struct pt_regset regs;
- extern char registers[];
-
- registers_fetched ();
-
- ptrace(XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®s, 0);
- *(int *)®isters[REGISTER_BYTE(0)] = regs.pr_eax;
- *(int *)®isters[REGISTER_BYTE(5)] = regs.pr_ebx;
- *(int *)®isters[REGISTER_BYTE(2)] = regs.pr_ecx;
- *(int *)®isters[REGISTER_BYTE(1)] = regs.pr_edx;
- *(int *)®isters[REGISTER_BYTE(6)] = regs.pr_esi;
- *(int *)®isters[REGISTER_BYTE(7)] = regs.pr_edi;
- *(int *)®isters[REGISTER_BYTE(15)] = regs.pr_ebp;
- *(int *)®isters[REGISTER_BYTE(14)] = regs.pr_esp;
- *(int *)®isters[REGISTER_BYTE(16)] = regs.pr_eip;
- *(int *)®isters[REGISTER_BYTE(17)] = regs.pr_flags;
- for (i = 0; i < FPA_NREGS; i++) {
- *(int *)®isters[REGISTER_BYTE(FP1_REGNUM+i)] = regs.pr_fpa.fpa_regs[i];
- }
- bcopy(regs.pr_fpu.fpu_stack[0], ®isters[REGISTER_BYTE(3)], 10);
- bcopy(regs.pr_fpu.fpu_stack[1], ®isters[REGISTER_BYTE(4)], 10);
- bcopy(regs.pr_fpu.fpu_stack[2], ®isters[REGISTER_BYTE(8)], 10);
- bcopy(regs.pr_fpu.fpu_stack[3], ®isters[REGISTER_BYTE(9)], 10);
- bcopy(regs.pr_fpu.fpu_stack[4], ®isters[REGISTER_BYTE(10)], 10);
- bcopy(regs.pr_fpu.fpu_stack[5], ®isters[REGISTER_BYTE(11)], 10);
- bcopy(regs.pr_fpu.fpu_stack[6], ®isters[REGISTER_BYTE(12)], 10);
- bcopy(regs.pr_fpu.fpu_stack[7], ®isters[REGISTER_BYTE(13)], 10);
-}
-
-\f
-/* Work with core dump and executable files, for GDB.
- This code would be in core.c if it weren't machine-dependent. */
-
-void
-core_file_command (filename, from_tty)
- char *filename;
- int from_tty;
-{
- int val;
- extern char registers[];
-
- /* Discard all vestiges of any previous core file
- and mark data and stack spaces as empty. */
-
- if (corefile)
- free (corefile);
- corefile = 0;
-
- if (corechan >= 0)
- close (corechan);
- corechan = -1;
-
- data_start = 0;
- data_end = 0;
- stack_start = STACK_END_ADDR;
- stack_end = STACK_END_ADDR;
-
- /* Now, if a new core file was specified, open it and digest it. */
-
- if (filename)
- {
- filename = tilde_expand (filename);
- make_cleanup (free, filename);
-
- if (have_inferior_p ())
- error ("To look at a core file, you must kill the program with \"kill\".");
- corechan = open (filename, O_RDONLY, 0);
- if (corechan < 0)
- perror_with_name (filename);
- /* 4.2-style (and perhaps also sysV-style) core dump file. */
- {
- struct user u;
- int reg_offset;
-
- val = myread (corechan, &u, sizeof u);
- if (val < 0)
- perror_with_name (filename);
- data_start = exec_data_start;
-
- data_end = data_start + NBPG * (u.u_dsize - u.u_tsize);
- stack_start = stack_end - NBPG * u.u_ssize;
- data_offset = NBPG * UPAGES;
- stack_offset = ctob(UPAGES + u.u_dsize - u.u_tsize);
- reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR;
-printf("u.u_tsize= %#x, u.u_dsize= %#x, u.u_ssize= %#x, stack_off= %#x\n",
- u.u_tsize, u.u_dsize, u.u_ssize, stack_offset);
-
- core_aouthdr.a_magic = 0;
-
- /* Read the register values out of the core file and store
- them where `read_register' will find them. */
-
- {
- register int regno;
-
- for (regno = 0; regno < NUM_REGS; regno++)
- {
- char buf[MAX_REGISTER_RAW_SIZE];
-
- val = lseek (corechan, register_addr (regno, reg_offset), 0);
- if (val < 0)
- perror_with_name (filename);
-
- val = myread (corechan, buf, sizeof buf);
- if (val < 0)
- perror_with_name (filename);
- supply_register (regno, buf);
- }
- }
- }
- if (filename[0] == '/')
- corefile = savestring (filename, strlen (filename));
- else
- {
- corefile = concat (current_directory, "/", filename, NULL);
- }
-
- set_current_frame(create_new_frame(read_register(FP_REGNUM),
- read_pc()));
-/* set_current_frame (read_register (FP_REGNUM));*/
- select_frame (get_current_frame (), 0);
- validate_files ();
- }
- else if (from_tty)
- printf ("No core file now.\n");
-}
-
-/* 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("80387:");
- if (ep.pr_fpu.fpu_ip == 0) {
- printf(" not in use.\n");
- return;
- } else {
- printf("\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 ("last exception: ");
- printf ("opcode 0x%x; ", ep.pr_fpu.fpu_rsvd4);
- printf ("pc 0x%x:0x%x; ", ep.pr_fpu.fpu_cs, ep.pr_fpu.fpu_ip);
- printf ("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 ("regno tag msb lsb value\n");
- for (fpreg = 7; fpreg >= 0; fpreg--)
- {
- double val;
-
- printf ("%s %d: ", fpreg == top ? "=>" : " ", fpreg);
-
- switch ((ep.pr_fpu.fpu_tag >> (fpreg * 2)) & 3)
- {
- case 0: printf ("valid "); break;
- case 1: printf ("zero "); break;
- case 2: printf ("trap "); break;
- case 3: printf ("empty "); break;
- }
- for (i = 9; i >= 0; i--)
- printf ("%02x", ep.pr_fpu.fpu_stack[fpreg][i]);
-
- i387_to_double (ep.pr_fpu.fpu_stack[fpreg], (char *)&val);
- printf (" %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("\tMODE= %#x; RND= %#x ", pcr_tmp, pcr_tmp & 12);
- switch (pcr_tmp & 12) {
- case 0:
- printf("RN (Nearest Value)");
- break;
- case 1:
- printf("RZ (Zero)");
- break;
- case 2:
- printf("RP (Positive Infinity)");
- break;
- case 3:
- printf("RM (Negative Infinity)");
- break;
- }
- printf("; IRND= %d ", pcr_tmp & 2);
- if (0 == pcr_tmp & 2) {
- printf("(same as RND)\n");
- } else {
- printf("(toward zero)\n");
- }
- pcr_tmp = pcr & FPA_PCR_EM;
- printf("\tEM= %#x", pcr_tmp);
- if (pcr_tmp & FPA_PCR_EM_DM) printf(" DM");
- if (pcr_tmp & FPA_PCR_EM_UOM) printf(" UOM");
- if (pcr_tmp & FPA_PCR_EM_PM) printf(" PM");
- if (pcr_tmp & FPA_PCR_EM_UM) printf(" UM");
- if (pcr_tmp & FPA_PCR_EM_OM) printf(" OM");
- if (pcr_tmp & FPA_PCR_EM_ZM) printf(" ZM");
- if (pcr_tmp & FPA_PCR_EM_IM) printf(" IM");
- printf("\n");
- pcr_tmp = FPA_PCR_CC;
- printf("\tCC= %#x", pcr_tmp);
- if (pcr_tmp & FPA_PCR_20MHZ) printf(" 20MHZ");
- if (pcr_tmp & FPA_PCR_CC_Z) printf(" Z");
- if (pcr_tmp & FPA_PCR_CC_C2) printf(" C2");
- if (pcr_tmp & FPA_PCR_CC_C1) printf(" C1");
- switch (pcr_tmp) {
- case FPA_PCR_CC_Z:
- printf(" (Equal)");
- break;
- case FPA_PCR_CC_C1:
- printf(" (Less than)");
- break;
- case 0:
- printf(" (Greater than)");
- break;
- case FPA_PCR_CC_Z | FPA_PCR_CC_C1 | FPA_PCR_CC_C2:
- printf(" (Unordered)");
- break;
- default:
- printf(" (Undefined)");
- break;
- }
- printf("\n");
- pcr_tmp = pcr & FPA_PCR_AE;
- printf("\tAE= %#x", pcr_tmp);
- if (pcr_tmp & FPA_PCR_AE_DE) printf(" DE");
- if (pcr_tmp & FPA_PCR_AE_UOE) printf(" UOE");
- if (pcr_tmp & FPA_PCR_AE_PE) printf(" PE");
- if (pcr_tmp & FPA_PCR_AE_UE) printf(" UE");
- if (pcr_tmp & FPA_PCR_AE_OE) printf(" OE");
- if (pcr_tmp & FPA_PCR_AE_ZE) printf(" ZE");
- if (pcr_tmp & FPA_PCR_AE_EE) printf(" EE");
- if (pcr_tmp & FPA_PCR_AE_IE) printf(" IE");
- printf("\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("%%fp%d: raw= %#x, single= %f", i+1, regs[i], xf.f);
- if (!(i & 1)) {
- printf("\n");
- } else {
- xd.l[1] = regs[i];
- xd.l[0] = regs[i+1];
- printf(", double= %f\n", xd.d);
- }
- }
-}
-
-print_fpa_status(ep)
-struct pt_regset ep;
-
-{
-
- printf("WTL 1167:");
- if (ep.pr_fpa.fpa_pcr !=0) {
- printf("\n");
- print_1167_control_word(ep.pr_fpa.fpa_pcr);
- print_1167_regs(ep.pr_fpa.fpa_regs);
- } else {
- printf(" not in use.\n");
- }
-}
-
-i386_float_info ()
-{
- char ubuf[UPAGES*NBPG];
- struct pt_regset regset;
- extern int corechan;
-
- if (have_inferior_p()) {
- call_ptrace(XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) ®set, 0);
- } else {
- 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);
-}