From 65662cdeabed6659ae3081b67595b8099769bde2 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Wed, 30 May 2012 19:41:34 +0000 Subject: [PATCH] 2012-05-30 Jeff Kenton * configure.host (gdb_host_cpu): Handle tilegx*. (gdb_host): Handle tilegx-*-linux*. * tilegx-linux-nat.c: New file. * config/tilegx/linux.mh: New file. --- gdb/ChangeLog | 7 ++ gdb/config/tilegx/linux.mh | 12 +++ gdb/configure.host | 3 + gdb/tilegx-linux-nat.c | 187 +++++++++++++++++++++++++++++++++++++ 4 files changed, 209 insertions(+) create mode 100644 gdb/config/tilegx/linux.mh create mode 100644 gdb/tilegx-linux-nat.c diff --git a/gdb/ChangeLog b/gdb/ChangeLog index fac4c9b7a56..8a1b27ee4a9 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,10 @@ +2012-05-30 Jeff Kenton + + * configure.host (gdb_host_cpu): Handle tilegx*. + (gdb_host): Handle tilegx-*-linux*. + * tilegx-linux-nat.c: New file. + * config/tilegx/linux.mh: New file. + 2012-05-30 Jeff Kenton * Makefile.in (ALL_TARGET_OBJS): Add tilegx-tdep.o and diff --git a/gdb/config/tilegx/linux.mh b/gdb/config/tilegx/linux.mh new file mode 100644 index 00000000000..56ef694b1f3 --- /dev/null +++ b/gdb/config/tilegx/linux.mh @@ -0,0 +1,12 @@ +# Host: Tilera TILE-Gx running GNU/Linux. + +NAT_FILE= config/nm-linux.h +NATDEPFILES= inf-ptrace.o fork-child.o \ + tilegx-linux-nat.o \ + proc-service.o linux-thread-db.o \ + linux-nat.o linux-osdata.o linux-fork.o \ + linux-procfs.o linux-ptrace.o + +# The dynamically loaded libthread_db needs access to symbols in the +# gdb executable. +LOADLIBES = -ldl $(RDYNAMIC) diff --git a/gdb/configure.host b/gdb/configure.host index 531f4587c0d..7dc35e19a6d 100644 --- a/gdb/configure.host +++ b/gdb/configure.host @@ -50,6 +50,7 @@ powerpc* | rs6000) gdb_host_cpu=powerpc ;; sparcv9 | sparc64) gdb_host_cpu=sparc ;; s390*) gdb_host_cpu=s390 ;; sh*) gdb_host_cpu=sh ;; +tilegx*) gdb_host_cpu=tilegx ;; x86_64*) gdb_host_cpu=i386 ;; m32r*) gdb_host_cpu=m32r ;; xtensa*) gdb_host_cpu=xtensa ;; @@ -159,6 +160,8 @@ sparc-*-solaris2* | sparcv9-*-solaris2* | sparc64-*-solaris2*) gdb_host=sol2 ;; +tilegx-*-linux*) gdb_host=linux ;; + vax-*-bsd*) gdb_host=vax ;; vax-*-netbsdelf* | vax-*-knetbsd*-gnu) gdb_host=nbsdelf ;; diff --git a/gdb/tilegx-linux-nat.c b/gdb/tilegx-linux-nat.c new file mode 100644 index 00000000000..23acba5c62c --- /dev/null +++ b/gdb/tilegx-linux-nat.c @@ -0,0 +1,187 @@ +/* Native-dependent code for GNU/Linux TILE-Gx. + + Copyright (C) 2012 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 3 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, see . */ + +#include "defs.h" +#include "inferior.h" +#include "gdbcore.h" +#include "regcache.h" +#include "linux-nat.h" + +#include + +#include "gdb_assert.h" +#include "gdb_string.h" + +#include + +#include "gdb_proc_service.h" +#include + +/* Prototypes for supply_gregset etc. */ +#include "gregset.h" + +/* Defines ps_err_e, struct ps_prochandle. */ +#include "gdb_proc_service.h" + +/* The register sets used in GNU/Linux ELF core-dumps are identical to + the register sets in `struct user' that is used for a.out + core-dumps, and is also used by `ptrace'. The corresponding types + are `elf_gregset_t' for the general-purpose registers (with + `elf_greg_t' the type of a single GP register) and `elf_fpregset_t' + for the floating-point registers. + + Those types used to be available under the names `gregset_t' and + `fpregset_t' too, and this file used those names in the past. But + those names are now used for the register sets used in the + `mcontext_t' type, and have a different size and layout. */ + +/* Mapping between the general-purpose registers in `struct user' + format and GDB's register array layout. Note that we map the + first 56 registers (0 thru 55) one-to-one. GDB maps the pc to + slot 64, but ptrace returns it in slot 56. */ +static const int regmap[] = +{ + 0, 1, 2, 3, 4, 5, 6, 7, + 8, 9, 10, 11, 12, 13, 14, 15, + 16, 17, 18, 19, 20, 21, 22, 23, + 24, 25, 26, 27, 28, 29, 30, 31, + 32, 33, 34, 35, 36, 37, 38, 39, + 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, + -1, -1, -1, -1, -1, -1, -1, -1, + 56 +}; + +/* Transfering the general-purpose registers between GDB, inferiors + and core files. */ + +/* Fill GDB's register array with the general-purpose register values + in *GREGSETP. */ + +void +supply_gregset (struct regcache* regcache, + const elf_gregset_t *gregsetp) +{ + elf_greg_t *regp = (elf_greg_t *) gregsetp; + int i; + + for (i = 0; i < sizeof (regmap) / sizeof (regmap[0]); i++) + if (regmap[i] >= 0) + regcache_raw_supply (regcache, i, regp + regmap[i]); +} + +/* Fill registers in *GREGSETPS with the values in GDB's + register array. */ + +void +fill_gregset (const struct regcache* regcache, + elf_gregset_t *gregsetp, int regno) +{ + elf_greg_t *regp = (elf_greg_t *) gregsetp; + int i; + + for (i = 0; i < sizeof (regmap) / sizeof (regmap[0]); i++) + if (regmap[i] >= 0) + regcache_raw_collect (regcache, i, regp + regmap[i]); +} + +/* Transfering floating-point registers between GDB, inferiors and cores. */ + +/* Fill GDB's register array with the floating-point register values in + *FPREGSETP. */ + +void +supply_fpregset (struct regcache *regcache, + const elf_fpregset_t *fpregsetp) +{ + /* NOTE: There are no floating-point registers for TILE-Gx. */ +} + +/* Fill register REGNO (if it is a floating-point register) in + *FPREGSETP with the value in GDB's register array. If REGNO is -1, + do this for all registers. */ + +void +fill_fpregset (const struct regcache *regcache, + elf_fpregset_t *fpregsetp, int regno) +{ + /* NOTE: There are no floating-point registers for TILE-Gx. */ +} + +/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this + for all registers. */ + +static void +fetch_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + elf_gregset_t regs; + int tid; + + tid = ptid_get_lwp (inferior_ptid); + if (tid == 0) + tid = ptid_get_pid (inferior_ptid); + + if (ptrace (PTRACE_GETREGS, tid, 0, (PTRACE_TYPE_ARG3) ®s) < 0) + perror_with_name (_("Couldn't get registers")); + + supply_gregset (regcache, (const elf_gregset_t *)®s); +} + +/* Store register REGNUM back into the inferior. If REGNUM is -1, do + this for all registers. */ + +static void +store_inferior_registers (struct target_ops *ops, + struct regcache *regcache, int regnum) +{ + elf_gregset_t regs; + int tid; + + tid = ptid_get_lwp (inferior_ptid); + if (tid == 0) + tid = ptid_get_pid (inferior_ptid); + + if (ptrace (PTRACE_GETREGS, tid, 0, (PTRACE_TYPE_ARG3) ®s) < 0) + perror_with_name (_("Couldn't get registers")); + + fill_gregset (regcache, ®s, regnum); + + if (ptrace (PTRACE_SETREGS, tid, 0, (PTRACE_TYPE_ARG3) ®s) < 0) + perror_with_name (_("Couldn't write registers")); +} + + +extern initialize_file_ftype _initialize_tile_linux_nat; + +void +_initialize_tile_linux_nat (void) +{ + struct target_ops *t; + + /* Fill in the generic GNU/Linux methods. */ + t = linux_target (); + + /* Add our register access methods. */ + t->to_fetch_registers = fetch_inferior_registers; + t->to_store_registers = store_inferior_registers; + + /* Register the target. */ + linux_nat_add_target (t); +} -- 2.30.2