From ade64f0e04453fd42382505da8c1cbf6300e75d4 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Wed, 30 May 2012 19:31:44 +0000 Subject: 2012-05-30 Jeff Kenton * Makefile.in (ALL_TARGET_OBJS): Add tilegx-tdep.o and tilegx-linux-tdep.o. (ALLDEPFILES): Add tilegx-linux-nat.c, tilegx-tdep.c and tilegx-linux-tdep.c. * configure.tgt: Handle tilegx-*-linux*. * tilegx-tdep.h: New file. * tilegx-tdep.c: New file. * tilegx-linux-tdep.c: New file. * regformats/reg-tilegx.dat: New file. --- gdb/tilegx-linux-tdep.c | 146 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 gdb/tilegx-linux-tdep.c (limited to 'gdb/tilegx-linux-tdep.c') diff --git a/gdb/tilegx-linux-tdep.c b/gdb/tilegx-linux-tdep.c new file mode 100644 index 0000000..c7c6d9c --- /dev/null +++ b/gdb/tilegx-linux-tdep.c @@ -0,0 +1,146 @@ +/* Target-dependent code for GNU/Linux on Tilera TILE-Gx processors. + + Copyright 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 "osabi.h" +#include "linux-tdep.h" +#include "glibc-tdep.h" +#include "solib-svr4.h" +#include "symtab.h" +#include "regcache.h" +#include "regset.h" +#include "tramp-frame.h" +#include "trad-frame.h" +#include "tilegx-tdep.h" + +/* Signal trampoline support. */ + +static void +tilegx_linux_sigframe_init (const struct tramp_frame *self, + struct frame_info *this_frame, + struct trad_frame_cache *this_cache, + CORE_ADDR func) +{ + CORE_ADDR pc = get_frame_register_unsigned (this_frame, 64); + CORE_ADDR sp = get_frame_register_unsigned (this_frame, 54); + CORE_ADDR base = sp + 16; + int i; + + for (i = 0; i < 56; i++) + trad_frame_set_reg_addr (this_cache, i, base + i * 8); + + trad_frame_set_reg_value (this_cache, 64, pc); + + /* Save a frame ID. */ + trad_frame_set_id (this_cache, frame_id_build (base, func)); +} + +static const struct tramp_frame tilegx_linux_rt_sigframe = +{ + SIGTRAMP_FRAME, + 8, + { + { 0x00045fe551483000, -1 }, /* { moveli r10, 139 } */ + { 0x286b180051485000, -1 }, /* { swint1 } */ + { TRAMP_SENTINEL_INSN, -1 } + }, + tilegx_linux_sigframe_init +}; + +/* Supply raw registers from REGCACHE to REGS. */ + +static void +tilegx_linux_supply_regset (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *regs, size_t len) +{ + struct gdbarch *arch = get_regcache_arch (regcache); + const char *ptr = regs; + int i; + + /* This logic must match that of struct pt_regs in "ptrace.h". */ + for (i = 0; i < TILEGX_NUM_EASY_REGS + 1; i++, ptr += tilegx_reg_size) + { + int gri = (i < TILEGX_NUM_EASY_REGS) ? i : TILEGX_PC_REGNUM; + + if (regnum == gri || regnum == -1) + regcache_raw_supply (regcache, gri, ptr); + } +} + +/* TILE-Gx Linux kernel register set. */ +static struct regset tilegx_linux_regset = +{ + NULL, + tilegx_linux_supply_regset +}; + +static const struct regset * +tilegx_regset_from_core_section (struct gdbarch *gdbarch, + const char *sect_name, + size_t sect_size) +{ + if (strcmp (sect_name, ".reg") == 0) + return &tilegx_linux_regset; + + return NULL; +} + +/* OS specific initialization of gdbarch. */ + +static void +tilegx_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) +{ + int arch_size = gdbarch_addr_bit (gdbarch); + + linux_init_abi (info, gdbarch); + + tramp_frame_prepend_unwinder (gdbarch, &tilegx_linux_rt_sigframe); + + set_gdbarch_regset_from_core_section (gdbarch, + tilegx_regset_from_core_section); + + /* GNU/Linux uses SVR4-style shared libraries. */ + if (arch_size == 32) + set_solib_svr4_fetch_link_map_offsets (gdbarch, + svr4_ilp32_fetch_link_map_offsets); + else + set_solib_svr4_fetch_link_map_offsets (gdbarch, + svr4_lp64_fetch_link_map_offsets); + + /* Enable TLS support. */ + set_gdbarch_fetch_tls_load_module_address (gdbarch, + svr4_fetch_objfile_link_map); + + /* Shared library handling. */ + set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); + set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver); + + set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type); +} + +/* Provide a prototype to silence -Wmissing-prototypes. */ +extern initialize_file_ftype _initialize_tilegx_linux_tdep; + +void +_initialize_tilegx_linux_tdep (void) +{ + gdbarch_register_osabi (bfd_arch_tilegx, bfd_mach_tilegx, GDB_OSABI_LINUX, + tilegx_linux_init_abi); +} -- cgit v1.1