diff options
Diffstat (limited to 'gdb/ptx4-nat.c')
| -rw-r--r-- | gdb/ptx4-nat.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/gdb/ptx4-nat.c b/gdb/ptx4-nat.c new file mode 100644 index 0000000..564b799 --- /dev/null +++ b/gdb/ptx4-nat.c @@ -0,0 +1,209 @@ +/* Native-dependent code for ptx 4.0 + Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "defs.h" +#include "inferior.h" +#include "gdbcore.h" +#include <sys/procfs.h> +#include <sys/ptrace.h> +#include <sys/param.h> +#include <fcntl.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 (gregsetp) + 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 (gregsetp, regno) + gregset_t *gregsetp; + int regno; +{ + int regi; + extern char registers[]; + + for (regi = 0 ; regi < NUM_REGS ; regi++) + { + if ((regno == -1) || (regno == regi)) + { + (*gregsetp)[regi] = *(greg_t *)®isters[REGISTER_BYTE (regi)]; + } + } +} + +#if defined (FP0_REGNUM) + +/* 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 (fpregsetp) + 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 (fpregsetp, regno) + fpregset_t *fpregsetp; + int regno; +{ + int regi; + char *to; + char *from; + extern char registers[]; + + /* FIXME: see m68k-tdep.c for an example, for the m68k. */ +} + +#endif /* defined (FP0_REGNUM) */ + +/* + * 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(func) + int (*func) PARAMS ((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, inferior_pid, &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, inferior_pid, 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; +} |