199b2450f6
Change all references to stdout/stderr to gdb_stdout/gdb_stderr. Replace all calls to stdio output functions with calls to corresponding _unfiltered functions (`fprintf_unfiltered') Replaced calls to fopen for output to gdb_fopen. Added sufficient goo to utils.c and defs.h to make the above work. The net effect is that stdio output functions are only directly used in utils.c. Elsewhere, the _unfiltered and _filtered functions and GDB_FILE type are used. In the near future, GDB_FILE will stop being equivalant to FILE. The semantics of some commands has changed in a very subtle way: called in the right context, they may cause new occurences of prompt_for_continue() behavior. The testsuite doesn't notice anything like this, though. Please respect this change by not reintroducing stdio output dependencies in the main body of gdb code. All output from commands should go to a GDB_FILE. Target-specific code can still use stdio directly to communicate with targets.
278 lines
8.2 KiB
C
278 lines
8.2 KiB
C
/* Native-dependent Motorola 88xxx support for GDB, the GNU Debugger.
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Copyright 1988, 1990, 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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#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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#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 <sys/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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#ifdef DELTA88
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#include <sys/ptrace.h>
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/* define offsets to the pc instruction offsets in ptrace_user struct */
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#define SXIP_OFFSET ((char *)&u.pt_sigframe.sig_sxip - (char *)&u)
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#define SNIP_OFFSET ((char *)&u.pt_sigframe.sig_snip - (char *)&u)
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#define SFIP_OFFSET ((char *)&u.pt_sigframe.sig_sfip - (char *)&u)
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#else
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/* define offsets to the pc instruction offsets in ptrace_user struct */
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#define SXIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_sxip - (char *)&u)
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#define SNIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_snip - (char *)&u)
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#define SFIP_OFFSET ((char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u)
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#endif
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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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extern char registers[REGISTER_BYTES];
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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 < NUM_REGS; 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 36 - 38; special pc registers */
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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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}
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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 (regno)
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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 == 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
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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) 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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}
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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 (blockend, 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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switch (regnum)
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{
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case 0:
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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case 8:
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case 9:
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case 10:
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case 11:
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case 12:
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case 13:
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case 14:
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case 15:
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case 16:
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case 17:
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case 18:
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case 19:
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case 20:
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case 21:
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case 22:
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case 23:
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case 24:
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case 25:
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case 26:
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case 27:
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case 28:
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case 29:
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case 30:
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case 31: return (ustart + ((int) &u.pt_r0 - (int) &u) + sizeof(REGISTER_TYPE) * regnum);
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case PSR_REGNUM: return (ustart + ((int) &u.pt_psr - (int) &u));
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case FPSR_REGNUM: return (ustart + ((int) &u.pt_fpsr - (int) &u));
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case FPCR_REGNUM: return (ustart + ((int) &u.pt_fpcr - (int) &u));
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case SXIP_REGNUM: return (ustart + SXIP_OFFSET);
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case SNIP_REGNUM: return (ustart + SNIP_OFFSET);
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case SFIP_REGNUM: return (ustart + SFIP_OFFSET);
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default: return (blockend + sizeof (REGISTER_TYPE) * regnum);
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}
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}
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#ifdef USE_PROC_FS
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#include <sys/procfs.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 (gregsetp)
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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 (gregsetp, regno)
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gregset_t *gregsetp;
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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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extern char registers[];
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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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