/* Native-dependent code for ptx 4.0
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/* Native-dependent code for ptx 4.0
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Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
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Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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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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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(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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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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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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "defs.h"
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#include "inferior.h"
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#include "inferior.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include <sys/procfs.h>
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#include <sys/procfs.h>
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#include <sys/ptrace.h>
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#include <sys/ptrace.h>
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#include <sys/param.h>
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#include <sys/param.h>
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#include <fcntl.h>
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#include <fcntl.h>
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/* Given a pointer to a general register set in /proc format (gregset_t *),
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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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unpack the register contents and supply them as gdb's idea of the current
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register values. */
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register values. */
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void
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void
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supply_gregset (gregsetp)
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supply_gregset (gregsetp)
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gregset_t *gregsetp;
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gregset_t *gregsetp;
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{
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{
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supply_register (EAX_REGNUM, (char *) &(*gregsetp)[EAX]);
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supply_register (EAX_REGNUM, (char *) &(*gregsetp)[EAX]);
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supply_register (EDX_REGNUM, (char *) &(*gregsetp)[EDX]);
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supply_register (EDX_REGNUM, (char *) &(*gregsetp)[EDX]);
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supply_register (ECX_REGNUM, (char *) &(*gregsetp)[ECX]);
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supply_register (ECX_REGNUM, (char *) &(*gregsetp)[ECX]);
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supply_register (EBX_REGNUM, (char *) &(*gregsetp)[EBX]);
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supply_register (EBX_REGNUM, (char *) &(*gregsetp)[EBX]);
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supply_register (ESI_REGNUM, (char *) &(*gregsetp)[ESI]);
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supply_register (ESI_REGNUM, (char *) &(*gregsetp)[ESI]);
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supply_register (EDI_REGNUM, (char *) &(*gregsetp)[EDI]);
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supply_register (EDI_REGNUM, (char *) &(*gregsetp)[EDI]);
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supply_register (ESP_REGNUM, (char *) &(*gregsetp)[UESP]);
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supply_register (ESP_REGNUM, (char *) &(*gregsetp)[UESP]);
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supply_register (EBP_REGNUM, (char *) &(*gregsetp)[EBP]);
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supply_register (EBP_REGNUM, (char *) &(*gregsetp)[EBP]);
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supply_register (EIP_REGNUM, (char *) &(*gregsetp)[EIP]);
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supply_register (EIP_REGNUM, (char *) &(*gregsetp)[EIP]);
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supply_register (EFLAGS_REGNUM, (char *) &(*gregsetp)[EFL]);
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supply_register (EFLAGS_REGNUM, (char *) &(*gregsetp)[EFL]);
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}
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}
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void
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void
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fill_gregset (gregsetp, regno)
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fill_gregset (gregsetp, regno)
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gregset_t *gregsetp;
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gregset_t *gregsetp;
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int regno;
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int regno;
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{
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{
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int regi;
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int regi;
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for (regi = 0; regi < NUM_REGS; regi++)
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for (regi = 0; regi < NUM_REGS; regi++)
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{
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{
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if ((regno == -1) || (regno == regi))
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if ((regno == -1) || (regno == regi))
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{
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{
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(*gregsetp)[regi] = *(greg_t *) & registers[REGISTER_BYTE (regi)];
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(*gregsetp)[regi] = *(greg_t *) & registers[REGISTER_BYTE (regi)];
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}
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}
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}
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}
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}
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}
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#if defined (FP0_REGNUM)
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#if defined (FP0_REGNUM)
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/* Given a pointer to a floating point register set in /proc format
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/* Given a pointer to a floating point register set in /proc format
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(fpregset_t *), unpack the register contents and supply them as gdb's
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(fpregset_t *), unpack the register contents and supply them as gdb's
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idea of the current floating point register values. */
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idea of the current floating point register values. */
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void
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void
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supply_fpregset (fpregsetp)
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supply_fpregset (fpregsetp)
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fpregset_t *fpregsetp;
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fpregset_t *fpregsetp;
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{
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{
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supply_fpu_registers ((struct fpusave *) &fpregsetp->fp_reg_set);
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supply_fpu_registers ((struct fpusave *) &fpregsetp->fp_reg_set);
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supply_fpa_registers ((struct fpasave *) &fpregsetp->f_wregs);
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supply_fpa_registers ((struct fpasave *) &fpregsetp->f_wregs);
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}
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}
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/* Given a pointer to a floating point register set in /proc format
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/* Given a pointer to a floating point register set in /proc format
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(fpregset_t *), update the register specified by REGNO from gdb's idea
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(fpregset_t *), update the register specified by REGNO from gdb's idea
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of the current floating point register set. If REGNO is -1, update
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of the current floating point register set. If REGNO is -1, update
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them all. */
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them all. */
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void
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void
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fill_fpregset (fpregsetp, regno)
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fill_fpregset (fpregsetp, regno)
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fpregset_t *fpregsetp;
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fpregset_t *fpregsetp;
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int regno;
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int regno;
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{
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{
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int regi;
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int regi;
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char *to;
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char *to;
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char *from;
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char *from;
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/* FIXME: see m68k-tdep.c for an example, for the m68k. */
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/* FIXME: see m68k-tdep.c for an example, for the m68k. */
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}
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}
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#endif /* defined (FP0_REGNUM) */
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#endif /* defined (FP0_REGNUM) */
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/*
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/*
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* This doesn't quite do the same thing as the procfs.c version, but give
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* This doesn't quite do the same thing as the procfs.c version, but give
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* it the same name so we don't have to put an ifdef in solib.c.
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* it the same name so we don't have to put an ifdef in solib.c.
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*/
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*/
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/* this could use elf_interpreter() from elfread.c */
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/* this could use elf_interpreter() from elfread.c */
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int
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int
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proc_iterate_over_mappings (func)
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proc_iterate_over_mappings (func)
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int (*func) PARAMS ((int, CORE_ADDR));
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int (*func) PARAMS ((int, CORE_ADDR));
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{
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{
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vaddr_t curseg, memptr;
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vaddr_t curseg, memptr;
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pt_vseg_t pv;
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pt_vseg_t pv;
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int rv, cmperr;
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int rv, cmperr;
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sec_ptr interp_sec;
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sec_ptr interp_sec;
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char *interp_content;
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char *interp_content;
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int interp_fd, funcstat;
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int interp_fd, funcstat;
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unsigned int size;
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unsigned int size;
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char buf1[NBPG], buf2[NBPG];
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char buf1[NBPG], buf2[NBPG];
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/*
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/*
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* The following is really vile. We can get the name of the
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* The following is really vile. We can get the name of the
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* shared library from the exec_bfd, and we can get a list of
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* shared library from the exec_bfd, and we can get a list of
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* each virtual memory segment, but there is no simple way to
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* each virtual memory segment, but there is no simple way to
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* find the mapped segment from the shared library (ala
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* find the mapped segment from the shared library (ala
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* procfs's PIOCOPENMEM). As a pretty nasty kludge, we
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* procfs's PIOCOPENMEM). As a pretty nasty kludge, we
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* compare the virtual memory segment to the contents of the
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* compare the virtual memory segment to the contents of the
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* .interp file. If they match, we assume that we've got the
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* .interp file. If they match, we assume that we've got the
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* right one.
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* right one.
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*/
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*/
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/*
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/*
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* TODO: for attach, use XPT_OPENT to get the executable, in
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* TODO: for attach, use XPT_OPENT to get the executable, in
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* case we're attached without knowning the executable's
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* case we're attached without knowning the executable's
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* filename.
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* filename.
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*/
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*/
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#ifdef VERBOSE_DEBUG
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#ifdef VERBOSE_DEBUG
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printf ("proc_iter\n");
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printf ("proc_iter\n");
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#endif
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#endif
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interp_sec = bfd_get_section_by_name (exec_bfd, ".interp");
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interp_sec = bfd_get_section_by_name (exec_bfd, ".interp");
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if (!interp_sec)
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if (!interp_sec)
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{
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{
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return 0;
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return 0;
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}
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}
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size = bfd_section_size (exec_bfd, interp_sec);
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size = bfd_section_size (exec_bfd, interp_sec);
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interp_content = alloca (size);
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interp_content = alloca (size);
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if (0 == bfd_get_section_contents (exec_bfd, interp_sec,
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if (0 == bfd_get_section_contents (exec_bfd, interp_sec,
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interp_content, (file_ptr) 0, size))
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interp_content, (file_ptr) 0, size))
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{
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{
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return 0;
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return 0;
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}
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}
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#ifdef VERBOSE_DEBUG
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#ifdef VERBOSE_DEBUG
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printf ("proc_iter: \"%s\"\n", interp_content);
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printf ("proc_iter: \"%s\"\n", interp_content);
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#endif
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#endif
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interp_fd = open (interp_content, O_RDONLY, 0);
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interp_fd = open (interp_content, O_RDONLY, 0);
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if (-1 == interp_fd)
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if (-1 == interp_fd)
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{
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{
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return 0;
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return 0;
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}
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}
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curseg = 0;
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curseg = 0;
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while (1)
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while (1)
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{
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{
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rv = ptrace (PT_NEXT_VSEG, inferior_pid, &pv, curseg);
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rv = ptrace (PT_NEXT_VSEG, inferior_pid, &pv, curseg);
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#ifdef VERBOSE_DEBUG
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#ifdef VERBOSE_DEBUG
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printf ("PT_NEXT_VSEG: rv %d errno %d\n", rv, errno);
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printf ("PT_NEXT_VSEG: rv %d errno %d\n", rv, errno);
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#endif
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#endif
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if (-1 == rv)
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if (-1 == rv)
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break;
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break;
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if (0 == rv)
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if (0 == rv)
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break;
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break;
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#ifdef VERBOSE_DEBUG
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#ifdef VERBOSE_DEBUG
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printf ("pv.pv_start 0x%x pv_size 0x%x pv_prot 0x%x\n",
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printf ("pv.pv_start 0x%x pv_size 0x%x pv_prot 0x%x\n",
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pv.pv_start, pv.pv_size, pv.pv_prot);
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pv.pv_start, pv.pv_size, pv.pv_prot);
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#endif
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#endif
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curseg = pv.pv_start + pv.pv_size;
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curseg = pv.pv_start + pv.pv_size;
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rv = lseek (interp_fd, 0, SEEK_SET);
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rv = lseek (interp_fd, 0, SEEK_SET);
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if (-1 == rv)
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if (-1 == rv)
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{
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{
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perror ("lseek");
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perror ("lseek");
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close (interp_fd);
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close (interp_fd);
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return 0;
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return 0;
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}
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}
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for (memptr = pv.pv_start; memptr < pv.pv_start + pv.pv_size;
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for (memptr = pv.pv_start; memptr < pv.pv_start + pv.pv_size;
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memptr += NBPG)
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memptr += NBPG)
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{
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{
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#ifdef VERBOSE_DEBUG
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#ifdef VERBOSE_DEBUG
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printf ("memptr 0x%x\n", memptr);
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printf ("memptr 0x%x\n", memptr);
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#endif
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#endif
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rv = read (interp_fd, buf1, NBPG);
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rv = read (interp_fd, buf1, NBPG);
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if (-1 == rv)
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if (-1 == rv)
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{
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{
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perror ("read");
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perror ("read");
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close (interp_fd);
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close (interp_fd);
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return 0;
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return 0;
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}
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}
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rv = ptrace (PT_RDATA_PAGE, inferior_pid, buf2,
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rv = ptrace (PT_RDATA_PAGE, inferior_pid, buf2,
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memptr);
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memptr);
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if (-1 == rv)
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if (-1 == rv)
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{
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{
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perror ("ptrace");
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perror ("ptrace");
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close (interp_fd);
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close (interp_fd);
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return 0;
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return 0;
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}
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}
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cmperr = memcmp (buf1, buf2, NBPG);
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cmperr = memcmp (buf1, buf2, NBPG);
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if (cmperr)
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if (cmperr)
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break;
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break;
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}
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}
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if (0 == cmperr)
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if (0 == cmperr)
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{
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{
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/* this is it */
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/* this is it */
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funcstat = (*func) (interp_fd, pv.pv_start);
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funcstat = (*func) (interp_fd, pv.pv_start);
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break;
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break;
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}
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}
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}
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}
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close (interp_fd);
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close (interp_fd);
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return 0;
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return 0;
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}
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}
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