X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fptx4-nat.c;h=1798b509f3026a03700f7a53704532bf32d06d56;hb=3bcbaac54041e1226ae28cf918d4f5daf1a899af;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=75d6585923cc61c0f3dd8012708b05ad206471bd;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/ptx4-nat.c b/gdb/ptx4-nat.c index e69de29bb2..1798b509f3 100644 --- a/gdb/ptx4-nat.c +++ b/gdb/ptx4-nat.c @@ -0,0 +1,211 @@ +/* Native-dependent code for ptx 4.0 + Copyright 1988, 1989, 1991, 1992, 1994, 1999, 2000, 2001 + 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 "inferior.h" +#include "gdbcore.h" +#include "regcache.h" +#include +#include +#include +#include + +/* Prototypes for supply_gregset etc. */ +#include "gregset.h" + +/* Given a pointer to a general register set in /proc format (gregset_t *), + unpack the register contents and supply them as gdb's idea of the current + register values. */ + +void +supply_gregset (gregset_t *gregsetp) +{ + supply_register (EAX_REGNUM, (char *) &(*gregsetp)[EAX]); + supply_register (EDX_REGNUM, (char *) &(*gregsetp)[EDX]); + supply_register (ECX_REGNUM, (char *) &(*gregsetp)[ECX]); + supply_register (EBX_REGNUM, (char *) &(*gregsetp)[EBX]); + supply_register (ESI_REGNUM, (char *) &(*gregsetp)[ESI]); + supply_register (EDI_REGNUM, (char *) &(*gregsetp)[EDI]); + supply_register (ESP_REGNUM, (char *) &(*gregsetp)[UESP]); + supply_register (EBP_REGNUM, (char *) &(*gregsetp)[EBP]); + supply_register (EIP_REGNUM, (char *) &(*gregsetp)[EIP]); + supply_register (EFLAGS_REGNUM, (char *) &(*gregsetp)[EFL]); +} + +void +fill_gregset (gregset_t *gregsetp, int regno) +{ + int regi; + + for (regi = 0; regi < NUM_REGS; regi++) + { + if ((regno == -1) || (regno == regi)) + { + (*gregsetp)[regi] = *(greg_t *) & deprecated_registers[REGISTER_BYTE (regi)]; + } + } +} + +/* 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) +{ + supply_fpu_registers ((struct fpusave *) &fpregsetp->fp_reg_set); + supply_fpa_registers ((struct fpasave *) &fpregsetp->f_wregs); +} + +/* Given a pointer to a floating point register set in /proc format + (fpregset_t *), update the register specified by REGNO from gdb's idea + of the current floating point register set. If REGNO is -1, update + them all. */ + +void +fill_fpregset (fpregset_t *fpregsetp, int regno) +{ + int regi; + char *to; + char *from; + + /* FIXME: see m68k-tdep.c for an example, for the m68k. */ +} + +/* + * This doesn't quite do the same thing as the procfs.c version, but give + * it the same name so we don't have to put an ifdef in solib.c. + */ +/* this could use elf_interpreter() from elfread.c */ +int +proc_iterate_over_mappings (int (*func) (int, CORE_ADDR)) +{ + vaddr_t curseg, memptr; + pt_vseg_t pv; + int rv, cmperr; + sec_ptr interp_sec; + char *interp_content; + int interp_fd, funcstat; + unsigned int size; + char buf1[NBPG], buf2[NBPG]; + + /* + * The following is really vile. We can get the name of the + * shared library from the exec_bfd, and we can get a list of + * each virtual memory segment, but there is no simple way to + * find the mapped segment from the shared library (ala + * procfs's PIOCOPENMEM). As a pretty nasty kludge, we + * compare the virtual memory segment to the contents of the + * .interp file. If they match, we assume that we've got the + * right one. + */ + + /* + * TODO: for attach, use XPT_OPENT to get the executable, in + * case we're attached without knowning the executable's + * filename. + */ + +#ifdef VERBOSE_DEBUG + printf ("proc_iter\n"); +#endif + interp_sec = bfd_get_section_by_name (exec_bfd, ".interp"); + if (!interp_sec) + { + return 0; + } + + size = bfd_section_size (exec_bfd, interp_sec); + interp_content = alloca (size); + if (0 == bfd_get_section_contents (exec_bfd, interp_sec, + interp_content, (file_ptr) 0, size)) + { + return 0; + } + +#ifdef VERBOSE_DEBUG + printf ("proc_iter: \"%s\"\n", interp_content); +#endif + interp_fd = open (interp_content, O_RDONLY, 0); + if (-1 == interp_fd) + { + return 0; + } + + curseg = 0; + while (1) + { + rv = ptrace (PT_NEXT_VSEG, PIDGET (inferior_ptid), &pv, curseg); +#ifdef VERBOSE_DEBUG + printf ("PT_NEXT_VSEG: rv %d errno %d\n", rv, errno); +#endif + if (-1 == rv) + break; + if (0 == rv) + break; +#ifdef VERBOSE_DEBUG + printf ("pv.pv_start 0x%x pv_size 0x%x pv_prot 0x%x\n", + pv.pv_start, pv.pv_size, pv.pv_prot); +#endif + curseg = pv.pv_start + pv.pv_size; + + rv = lseek (interp_fd, 0, SEEK_SET); + if (-1 == rv) + { + perror ("lseek"); + close (interp_fd); + return 0; + } + for (memptr = pv.pv_start; memptr < pv.pv_start + pv.pv_size; + memptr += NBPG) + { +#ifdef VERBOSE_DEBUG + printf ("memptr 0x%x\n", memptr); +#endif + rv = read (interp_fd, buf1, NBPG); + if (-1 == rv) + { + perror ("read"); + close (interp_fd); + return 0; + } + rv = ptrace (PT_RDATA_PAGE, PIDGET (inferior_ptid), buf2, + memptr); + if (-1 == rv) + { + perror ("ptrace"); + close (interp_fd); + return 0; + } + cmperr = memcmp (buf1, buf2, NBPG); + if (cmperr) + break; + } + if (0 == cmperr) + { + /* this is it */ + funcstat = (*func) (interp_fd, pv.pv_start); + break; + } + } + close (interp_fd); + return 0; +}