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-rw-r--r--gdb/i386aix-nat.c362
1 files changed, 0 insertions, 362 deletions
diff --git a/gdb/i386aix-nat.c b/gdb/i386aix-nat.c
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index 20e656e..0000000
--- a/gdb/i386aix-nat.c
+++ /dev/null
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-/* Intel 386 native support.
- Copyright (C) 1988, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "frame.h"
-#include "inferior.h"
-#include "language.h"
-#include "gdbcore.h"
-
-#ifdef USG
-#include <sys/types.h>
-#endif
-
-#include <sys/param.h>
-#include <sys/dir.h>
-#include <signal.h>
-#include <sys/user.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-
-#include <sys/file.h>
-#include "gdb_stat.h"
-
-#include <stddef.h>
-#include <sys/ptrace.h>
-
-/* Does AIX define this in <errno.h>? */
-extern int errno;
-
-#ifdef HAVE_SYS_REG_H
-#include <sys/reg.h>
-#endif
-
-#include "floatformat.h"
-
-#include "target.h"
-
-static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
-
-
-/* this table must line up with REGISTER_NAMES in tm-i386v.h */
-/* symbols like 'EAX' come from <sys/reg.h> */
-static int regmap[] =
-{
- EAX, ECX, EDX, EBX,
- USP, EBP, ESI, EDI,
- EIP, EFL, CS, SS,
- DS, ES, FS, GS,
-};
-
-/* blockend is the value of u.u_ar0, and points to the
- * place where GS is stored
- */
-
-int
-i386_register_u_addr (blockend, regnum)
- int blockend;
- int regnum;
-{
-#if 0
- /* this will be needed if fp registers are reinstated */
- /* for now, you can look at them with 'info float'
- * sys5 wont let you change them with ptrace anyway
- */
- if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM)
- {
- int ubase, fpstate;
- struct user u;
- ubase = blockend + 4 * (SS + 1) - KSTKSZ;
- fpstate = ubase + ((char *)&u.u_fpstate - (char *)&u);
- return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM));
- }
- else
-#endif
- return (blockend + 4 * regmap[regnum]);
-
-}
-
-/* The code below only work on the aix ps/2 (i386-ibm-aix) -
- * mtranle@paris - Sat Apr 11 10:34:12 1992
- */
-
-struct env387
-{
- unsigned short control;
- unsigned short r0;
- unsigned short status;
- unsigned short r1;
- unsigned short tag;
- unsigned short r2;
- unsigned long eip;
- unsigned short code_seg;
- unsigned short opcode;
- unsigned long operand;
- unsigned short operand_seg;
- unsigned short r3;
- unsigned char regs[8][10];
-};
-
-static
-print_387_status (status, ep)
- unsigned short status;
- struct env387 *ep;
-{
- int i;
- int bothstatus;
- int top;
- int fpreg;
- unsigned char *p;
-
- bothstatus = ((status != 0) && (ep->status != 0));
- if (status != 0)
- {
- if (bothstatus)
- printf_unfiltered ("u: ");
- print_387_status_word (status);
- }
-
- if (ep->status != 0)
- {
- if (bothstatus)
- printf_unfiltered ("e: ");
- print_387_status_word (ep->status);
- }
-
- print_387_control_word (ep->control);
- printf_unfiltered ("last exception: ");
- printf_unfiltered ("opcode %s; ", local_hex_string(ep->opcode));
- printf_unfiltered ("pc %s:", local_hex_string(ep->code_seg));
- printf_unfiltered ("%s; ", local_hex_string(ep->eip));
- printf_unfiltered ("operand %s", local_hex_string(ep->operand_seg));
- printf_unfiltered (":%s\n", local_hex_string(ep->operand));
-
- top = ((ep->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->tag >> ((7 - 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->regs[fpreg][i]);
-
- i387_to_double ((char *)ep->regs[fpreg], (char *)&val);
- printf_unfiltered (" %#g\n", val);
- }
-}
-
-static struct env387 core_env387;
-
-void
-i386_float_info ()
-{
- struct env387 fps;
- int fpsaved = 0;
- /* We need to reverse the order of the registers. Apparently AIX stores
- the highest-numbered ones first. */
- struct env387 fps_fixed;
- int i;
-
- if (inferior_pid)
- {
- char buf[10];
- unsigned short status;
-
- ptrace (PT_READ_FPR, inferior_pid, buf, offsetof(struct env387, status));
- memcpy (&status, buf, sizeof (status));
- fpsaved = status;
- }
- else
- {
- if ((fpsaved = core_env387.status) != 0)
- memcpy(&fps, &core_env387, sizeof(fps));
- }
-
- if (fpsaved == 0)
- {
- printf_unfiltered ("no floating point status saved\n");
- return;
- }
-
- if (inferior_pid)
- {
- int offset;
- for (offset = 0; offset < sizeof(fps); offset += 10)
- {
- char buf[10];
- ptrace (PT_READ_FPR, inferior_pid, buf, offset);
- memcpy ((char *)&fps.control + offset, buf,
- MIN(10, sizeof(fps) - offset));
- }
- }
- fps_fixed = fps;
- for (i = 0; i < 8; ++i)
- memcpy (fps_fixed.regs[i], fps.regs[7 - i], 10);
- print_387_status (0, &fps_fixed);
-}
-
-/* Fetch one register. */
-static void
-fetch_register (regno)
- int regno;
-{
- char buf[MAX_REGISTER_RAW_SIZE];
- if (regno < FP0_REGNUM)
- *(int *)buf = ptrace (PT_READ_GPR, inferior_pid,
- PT_REG(regmap[regno]), 0, 0);
- else
- ptrace (PT_READ_FPR, inferior_pid, buf,
- (regno - FP0_REGNUM)*10 + offsetof(struct env387, regs));
- supply_register (regno, buf);
-}
-
-void
-fetch_inferior_registers (regno)
- int regno;
-{
- if (regno < 0)
- for (regno = 0; regno < NUM_REGS; regno++)
- fetch_register (regno);
- else
- fetch_register (regno);
-}
-
-/* store one register */
-static void
-store_register (regno)
- int regno;
-{
- char buf[80];
- extern char registers[];
- errno = 0;
- if (regno < FP0_REGNUM)
- ptrace (PT_WRITE_GPR, inferior_pid, PT_REG(regmap[regno]),
- *(int *) &registers[REGISTER_BYTE (regno)], 0);
- else
- ptrace (PT_WRITE_FPR, inferior_pid, &registers[REGISTER_BYTE (regno)],
- (regno - FP0_REGNUM)*10 + offsetof(struct env387, regs));
-
- if (errno != 0)
- {
- sprintf (buf, "writing register number %d", regno);
- perror_with_name (buf);
- }
-}
-
-/* Store our register values back into the inferior.
- If REGNO is -1, do this for all registers.
- Otherwise, REGNO specifies which register (so we can save time). */
-void
-store_inferior_registers (regno)
- int regno;
-{
- if (regno < 0)
- for (regno = 0; regno < NUM_REGS; regno++)
- store_register (regno);
- else
- store_register (regno);
-}
-
-#ifndef CD_AX /* defined in sys/i386/coredump.h */
-# define CD_AX 0
-# define CD_BX 1
-# define CD_CX 2
-# define CD_DX 3
-# define CD_SI 4
-# define CD_DI 5
-# define CD_BP 6
-# define CD_SP 7
-# define CD_FL 8
-# define CD_IP 9
-# define CD_CS 10
-# define CD_DS 11
-# define CD_ES 12
-# define CD_FS 13
-# define CD_GS 14
-# define CD_SS 15
-#endif
-
-/*
- * The order here in core_regmap[] has to be the same as in
- * regmap[] above.
- */
-static int core_regmap[] =
-{
- CD_AX, CD_CX, CD_DX, CD_BX,
- CD_SP, CD_BP, CD_SI, CD_DI,
- CD_IP, CD_FL, CD_CS, CD_SS,
- CD_DS, CD_ES, CD_FS, CD_GS,
-};
-
-static void
-fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
- char *core_reg_sect;
- unsigned core_reg_size;
- int which;
- CORE_ADDR reg_addr; /* ignored */
-{
-
- if (which == 0)
- {
- /* Integer registers */
-
-#define cd_regs(n) ((int *)core_reg_sect)[n]
-#define regs(n) *((int *) &registers[REGISTER_BYTE (n)])
-
- int i;
- for (i = 0; i < FP0_REGNUM; i++)
- regs(i) = cd_regs(core_regmap[i]);
- }
- else if (which == 2)
- {
- /* Floating point registers */
-
- if (core_reg_size >= sizeof (core_env387))
- memcpy (&core_env387, core_reg_sect, core_reg_size);
- else
- fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
- }
-}
-
-
-/* Register that we are able to handle i386aix core file formats.
- FIXME: is this really bfd_target_unknown_flavour? */
-
-static struct core_fns i386aix_core_fns =
-{
- bfd_target_unknown_flavour,
- fetch_core_registers,
- NULL
-};
-
-void
-_initialize_core_i386aix ()
-{
- add_core_fns (&i386aix_core_fns);
-}
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