536 lines
16 KiB
C
536 lines
16 KiB
C
/* Native support for Motorola 88k running Harris CX/UX.
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Copyright 1988, 1990, 1991, 1992, 1993, 1994 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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 <sys/types.h>
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include "gdbcore.h"
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#include <sys/user.h>
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#include "bfd.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "symtab.h"
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#ifndef USER /* added to support BCS ptrace_user */
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#define USER ptrace_user
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#endif
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <sys/file.h>
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#include "gdb_stat.h"
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#include "symtab.h"
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#include "setjmp.h"
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#include "value.h"
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#include <sys/ptrace.h>
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/* CX/UX provides them already, but as word offsets instead of char offsets */
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#define SXIP_OFFSET (PT_SXIP * 4)
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#define SNIP_OFFSET (PT_SNIP * 4)
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#define SFIP_OFFSET (PT_SFIP * 4)
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#define PSR_OFFSET (PT_PSR * sizeof(int))
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#define FPSR_OFFSET (PT_FPSR * sizeof(int))
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#define FPCR_OFFSET (PT_FPCR * sizeof(int))
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#define XREGADDR(r) (((char *)&u.pt_x0-(char *)&u) + \
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((r)-X0_REGNUM)*sizeof(X_REGISTER_RAW_TYPE))
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extern int have_symbol_file_p ();
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extern jmp_buf stack_jmp;
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extern int errno;
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void
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fetch_inferior_registers (regno)
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int regno; /* Original value discarded */
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{
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register unsigned int regaddr;
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char buf[MAX_REGISTER_RAW_SIZE];
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register int i;
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struct USER u;
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unsigned int offset;
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offset = (char *) &u.pt_r0 - (char *) &u;
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regaddr = offset; /* byte offset to r0; */
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/* offset = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) - KERNEL_U_ADDR; */
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for (regno = 0; regno < PC_REGNUM; regno++)
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{
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/*regaddr = register_addr (regno, offset); */
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/* 88k enhancement */
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for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
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{
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*(int *) &buf[i] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) regaddr, 0);
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regaddr += sizeof (int);
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}
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supply_register (regno, buf);
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}
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/* now load up registers 32-37; special pc registers */
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*(int *) &buf[0] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) PSR_OFFSET, 0);
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supply_register (PSR_REGNUM, buf);
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*(int *) &buf[0] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) FPSR_OFFSET, 0);
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supply_register (FPSR_REGNUM, buf);
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*(int *) &buf[0] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) FPCR_OFFSET, 0);
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supply_register (FPCR_REGNUM, buf);
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*(int *) &buf[0] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) SXIP_OFFSET, 0);
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supply_register (SXIP_REGNUM, buf);
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*(int *) &buf[0] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) SNIP_OFFSET, 0);
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supply_register (SNIP_REGNUM, buf);
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*(int *) &buf[0] = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) SFIP_OFFSET, 0);
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supply_register (SFIP_REGNUM, buf);
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if (target_is_m88110)
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{
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for (regaddr = XREGADDR (X0_REGNUM), regno = X0_REGNUM;
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regno < NUM_REGS;
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regno++, regaddr += 16)
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{
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X_REGISTER_RAW_TYPE xval;
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*(int *) &xval.w1 = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) regaddr, 0);
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*(int *) &xval.w2 = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) (regaddr + 4), 0);
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*(int *) &xval.w3 = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) (regaddr + 8), 0);
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*(int *) &xval.w4 = ptrace (3, inferior_pid,
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(PTRACE_ARG3_TYPE) (regaddr + 12), 0);
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supply_register (regno, (void *) &xval);
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}
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}
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}
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/* Store our register values back into the inferior.
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If REGNO is -1, do this for all registers.
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Otherwise, REGNO specifies which register (so we can save time). */
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void
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store_inferior_registers (int regno)
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{
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register unsigned int regaddr;
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char buf[80];
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struct USER u;
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unsigned int offset = (char *) &u.pt_r0 - (char *) &u;
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regaddr = offset;
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/* Don't try to deal with EXIP_REGNUM or ENIP_REGNUM, because I think either
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svr3 doesn't run on an 88110, or the kernel isolates the different (not
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completely sure this is true, but seems to be. */
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if (regno >= 0)
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{
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/* regaddr = register_addr (regno, offset); */
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if (regno < PC_REGNUM)
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{
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regaddr = offset + regno * sizeof (int);
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errno = 0;
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) regaddr, read_register (regno));
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if (errno != 0)
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{
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sprintf (buf, "writing register number %d", regno);
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perror_with_name (buf);
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}
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}
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else if (regno == PSR_REGNUM)
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
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else if (regno == FPSR_REGNUM)
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
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else if (regno == FPCR_REGNUM)
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
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else if (regno == SXIP_REGNUM)
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (regno));
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else if (regno == SNIP_REGNUM)
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (regno));
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else if (regno == SFIP_REGNUM)
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (regno));
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else if (target_is_m88110 && regno < NUM_REGS)
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{
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X_REGISTER_RAW_TYPE xval;
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read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
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sizeof (X_REGISTER_RAW_TYPE));
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regaddr = XREGADDR (regno);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 4, xval.w2);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 8, xval.w3);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 12, xval.w4);
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}
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else
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printf_unfiltered ("Bad register number for store_inferior routine\n");
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}
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else
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{
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for (regno = 0; regno < PC_REGNUM; regno++)
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{
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/* regaddr = register_addr (regno, offset); */
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errno = 0;
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regaddr = offset + regno * sizeof (int);
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) regaddr, read_register (regno));
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if (errno != 0)
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{
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sprintf (buf, "writing register number %d", regno);
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perror_with_name (buf);
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}
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}
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (SXIP_REGNUM));
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (SNIP_REGNUM));
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ptrace (6, inferior_pid,
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(PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (SFIP_REGNUM));
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if (target_is_m88110)
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{
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for (regno = X0_REGNUM; regno < NUM_REGS; regno++)
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{
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X_REGISTER_RAW_TYPE xval;
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read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
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sizeof (X_REGISTER_RAW_TYPE));
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regaddr = XREGADDR (regno);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 4), xval.w2);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 8), xval.w3);
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ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 12), xval.w4);
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}
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}
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}
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}
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/* blockend is the address of the end of the user structure */
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m88k_register_u_addr (int blockend, int regnum)
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{
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struct USER u;
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int ustart = blockend - sizeof (struct USER);
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if (regnum < PSR_REGNUM)
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return (ustart + ((int) &u.pt_r0 - (int) &u) +
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REGISTER_SIZE * regnum);
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else if (regnum == PSR_REGNUM)
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return (ustart + ((int) &u.pt_psr) - (int) &u);
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else if (regnum == FPSR_REGNUM)
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return (ustart + ((int) &u.pt_fpsr) - (int) &u);
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else if (regnum == FPCR_REGNUM)
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return (ustart + ((int) &u.pt_fpcr) - (int) &u);
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else if (regnum == SXIP_REGNUM)
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return (ustart + SXIP_OFFSET);
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else if (regnum == SNIP_REGNUM)
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return (ustart + SNIP_OFFSET);
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else if (regnum == SFIP_REGNUM)
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return (ustart + SFIP_OFFSET);
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else if (target_is_m88110)
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return (ustart + ((int) &u.pt_x0 - (int) &u) + /* Must be X register */
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sizeof (u.pt_x0) * (regnum - X0_REGNUM));
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else
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return (blockend + REGISTER_SIZE * regnum);
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}
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#ifdef USE_PROC_FS
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#include <sys/procfs.h>
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/* Prototypes for supply_gregset etc. */
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#include "gregset.h"
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/* Given a pointer to a general register set in /proc format (gregset_t *),
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unpack the register contents and supply them as gdb's idea of the current
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register values. */
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void
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supply_gregset (gregset_t *gregsetp)
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{
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register int regi;
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register greg_t *regp = (greg_t *) gregsetp;
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for (regi = 0; regi <= SP_REGNUM; regi++)
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supply_register (regi, (char *) (regp + regi));
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supply_register (SXIP_REGNUM, (char *) (regp + R_XIP));
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supply_register (SNIP_REGNUM, (char *) (regp + R_NIP));
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supply_register (SFIP_REGNUM, (char *) (regp + R_FIP));
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supply_register (PSR_REGNUM, (char *) (regp + R_PSR));
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supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
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supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
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}
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void
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fill_gregset (gregset_t *gregsetp, int regno)
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{
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int regi;
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register greg_t *regp = (greg_t *) gregsetp;
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for (regi = 0; regi <= R_R31; regi++)
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if ((regno == -1) || (regno == regi))
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*(regp + regi) = *(int *) ®isters[REGISTER_BYTE (regi)];
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if ((regno == -1) || (regno == SXIP_REGNUM))
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*(regp + R_XIP) = *(int *) ®isters[REGISTER_BYTE (SXIP_REGNUM)];
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if ((regno == -1) || (regno == SNIP_REGNUM))
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*(regp + R_NIP) = *(int *) ®isters[REGISTER_BYTE (SNIP_REGNUM)];
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if ((regno == -1) || (regno == SFIP_REGNUM))
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*(regp + R_FIP) = *(int *) ®isters[REGISTER_BYTE (SFIP_REGNUM)];
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if ((regno == -1) || (regno == PSR_REGNUM))
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*(regp + R_PSR) = *(int *) ®isters[REGISTER_BYTE (PSR_REGNUM)];
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if ((regno == -1) || (regno == FPSR_REGNUM))
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*(regp + R_FPSR) = *(int *) ®isters[REGISTER_BYTE (FPSR_REGNUM)];
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if ((regno == -1) || (regno == FPCR_REGNUM))
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*(regp + R_FPCR) = *(int *) ®isters[REGISTER_BYTE (FPCR_REGNUM)];
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}
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#endif /* USE_PROC_FS */
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/* This support adds the equivalent of adb's % command. When
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the `add-shared-symbol-files' command is given, this routine scans
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the dynamic linker's link map and reads the minimal symbols
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from each shared object file listed in the map. */
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struct link_map
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{
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unsigned long l_addr; /* address at which object is mapped */
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char *l_name; /* full name of loaded object */
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void *l_ld; /* dynamic structure of object */
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struct link_map *l_next; /* next link object */
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struct link_map *l_prev; /* previous link object */
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};
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#define LINKS_MAP_POINTER "_ld_tail"
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#define LIBC_FILE "/usr/lib/libc.so.1"
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#define SHARED_OFFSET 0xf0001000
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#ifndef PATH_MAX
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#define PATH_MAX 1023 /* maximum size of path name on OS */
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#endif
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void
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add_shared_symbol_files (void)
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{
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void *desc;
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struct link_map *ld_map, *lm, lms;
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struct minimal_symbol *minsym;
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struct objfile *objfile;
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char *path_name;
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if (!inferior_pid)
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{
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warning ("The program has not yet been started.");
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return;
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}
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objfile = symbol_file_add (LIBC_FILE, 0, NULL, 0, OBJF_READNOW);
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minsym = lookup_minimal_symbol (LINKS_MAP_POINTER, objfile);
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ld_map = (struct link_map *)
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read_memory_integer (((int) SYMBOL_VALUE_ADDRESS (minsym) + SHARED_OFFSET), 4);
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lm = ld_map;
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while (lm)
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{
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int local_errno = 0;
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read_memory ((CORE_ADDR) lm, (char *) &lms, sizeof (struct link_map));
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if (lms.l_name)
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{
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if (target_read_string ((CORE_ADDR) lms.l_name, &path_name,
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PATH_MAX, &local_errno))
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{
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struct section_addr_info section_addrs;
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memset (§ion_addrs, 0, sizeof (section_addrs));
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section_addrs.other[0].addr = lms.l_addr;
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section_addrs.other[0].name = ".text";
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symbol_file_add (path_name, 1, §ion_addrs, 0, 0);
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free (path_name);
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}
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}
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/* traverse links in reverse order so that we get the
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the symbols the user actually gets. */
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lm = lms.l_prev;
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}
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/* Getting new symbols may change our opinion about what is
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frameless. */
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reinit_frame_cache ();
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}
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#if defined(_ES_MP)
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#include <sys/regset.h>
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unsigned int
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m88k_harris_core_register_addr (int regno, int reg_ptr)
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{
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unsigned int word_offset;
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switch (regno)
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{
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case PSR_REGNUM:
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word_offset = R_EPSR;
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break;
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case FPSR_REGNUM:
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word_offset = R_FPSR;
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break;
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case FPCR_REGNUM:
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word_offset = R_FPCR;
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break;
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case SXIP_REGNUM:
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word_offset = R_EXIP;
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break;
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case SNIP_REGNUM:
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word_offset = R_ENIP;
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break;
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case SFIP_REGNUM:
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word_offset = R_EFIP;
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break;
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default:
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if (regno <= FP_REGNUM)
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word_offset = regno;
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else
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word_offset = ((regno - X0_REGNUM) * 4);
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}
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return (word_offset * 4);
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}
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#endif /* _ES_MP */
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void
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_initialize_m88k_nat (void)
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{
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#ifdef _ES_MP
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/* Enable 88110 support, as we don't support the 88100 under ES/MP. */
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target_is_m88110 = 1;
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#elif defined(_CX_UX)
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/* Determine whether we're running on an 88100 or an 88110. */
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target_is_m88110 = (sinfo (SYSMACHINE, 0) == SYS5800);
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#endif /* _CX_UX */
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}
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#ifdef _ES_MP
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/* Given a pointer to a general register set in /proc format (gregset_t *),
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unpack the register contents and supply them as gdb's idea of the current
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register values. */
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void
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supply_gregset (gregset_t *gregsetp)
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{
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register int regi;
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register greg_t *regp = (greg_t *) gregsetp;
|
|
|
|
for (regi = 0; regi < R_R31; regi++)
|
|
{
|
|
supply_register (regi, (char *) (regp + regi));
|
|
}
|
|
supply_register (PSR_REGNUM, (char *) (regp + R_EPSR));
|
|
supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
|
|
supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
|
|
supply_register (SXIP_REGNUM, (char *) (regp + R_EXIP));
|
|
supply_register (SNIP_REGNUM, (char *) (regp + R_ENIP));
|
|
supply_register (SFIP_REGNUM, (char *) (regp + R_EFIP));
|
|
}
|
|
|
|
/* Given a pointer to a floating point register set in /proc format
|
|
(fpregset_t *), unpack the register contents and supply them as gdb's
|
|
idea of the current floating point register values. */
|
|
|
|
void
|
|
supply_fpregset (fpregset_t *fpregsetp)
|
|
{
|
|
register int regi;
|
|
char *from;
|
|
|
|
for (regi = FP0_REGNUM; regi <= FPLAST_REGNUM; regi++)
|
|
{
|
|
from = (char *) &((*fpregsetp)[regi - FP0_REGNUM]);
|
|
supply_register (regi, from);
|
|
}
|
|
}
|
|
|
|
#endif /* _ES_MP */
|
|
|
|
#ifdef _CX_UX
|
|
|
|
#include <sys/regset.h>
|
|
|
|
unsigned int
|
|
m88k_harris_core_register_addr (int regno, int reg_ptr)
|
|
{
|
|
unsigned int word_offset;
|
|
|
|
switch (regno)
|
|
{
|
|
case PSR_REGNUM:
|
|
word_offset = R_PSR;
|
|
break;
|
|
case FPSR_REGNUM:
|
|
word_offset = R_FPSR;
|
|
break;
|
|
case FPCR_REGNUM:
|
|
word_offset = R_FPCR;
|
|
break;
|
|
case SXIP_REGNUM:
|
|
word_offset = R_XIP;
|
|
break;
|
|
case SNIP_REGNUM:
|
|
word_offset = R_NIP;
|
|
break;
|
|
case SFIP_REGNUM:
|
|
word_offset = R_FIP;
|
|
break;
|
|
default:
|
|
if (regno <= FP_REGNUM)
|
|
word_offset = regno;
|
|
else
|
|
word_offset = ((regno - X0_REGNUM) * 4) + R_X0;
|
|
}
|
|
return (word_offset * 4);
|
|
}
|
|
|
|
#endif /* _CX_UX */
|