| /* 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; |
| |
| 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; |
| |
| /* 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; |
| } |