| /* Target-dependent code for GNU/Linux UltraSPARC. |
| |
| Copyright (C) 2003, 2004, 2005 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., 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| #include "defs.h" |
| #include "frame.h" |
| #include "frame-unwind.h" |
| #include "gdbarch.h" |
| #include "osabi.h" |
| #include "solib-svr4.h" |
| #include "symtab.h" |
| #include "trad-frame.h" |
| #include "tramp-frame.h" |
| |
| #include "sparc64-tdep.h" |
| |
| /* Signal trampoline support. */ |
| |
| static void sparc64_linux_sigframe_init (const struct tramp_frame *self, |
| struct frame_info *next_frame, |
| struct trad_frame_cache *this_cache, |
| CORE_ADDR func); |
| |
| /* See sparc-linux-tdep.c for details. Note that 64-bit binaries only |
| use RT signals. */ |
| |
| static const struct tramp_frame sparc64_linux_rt_sigframe = |
| { |
| SIGTRAMP_FRAME, |
| 4, |
| { |
| { 0x82102065, -1 }, /* mov __NR_rt_sigreturn, %g1 */ |
| { 0x91d0206d, -1 }, /* ta 0x6d */ |
| { TRAMP_SENTINEL_INSN, -1 } |
| }, |
| sparc64_linux_sigframe_init |
| }; |
| |
| static void |
| sparc64_linux_sigframe_init (const struct tramp_frame *self, |
| struct frame_info *next_frame, |
| struct trad_frame_cache *this_cache, |
| CORE_ADDR func) |
| { |
| CORE_ADDR base, addr; |
| int regnum; |
| |
| base = frame_unwind_register_unsigned (next_frame, SPARC_O1_REGNUM); |
| base += 128; |
| |
| /* Offsets from <bits/sigcontext.h>. */ |
| |
| /* Since %g0 is always zero, keep the identity encoding. */ |
| addr = base + 8; |
| for (regnum = SPARC_G1_REGNUM; regnum <= SPARC_O7_REGNUM; regnum++) |
| { |
| trad_frame_set_reg_addr (this_cache, regnum, addr); |
| addr += 8; |
| } |
| |
| trad_frame_set_reg_addr (this_cache, SPARC64_STATE_REGNUM, addr + 0); |
| trad_frame_set_reg_addr (this_cache, SPARC64_PC_REGNUM, addr + 8); |
| trad_frame_set_reg_addr (this_cache, SPARC64_NPC_REGNUM, addr + 16); |
| trad_frame_set_reg_addr (this_cache, SPARC64_Y_REGNUM, addr + 24); |
| trad_frame_set_reg_addr (this_cache, SPARC64_FPRS_REGNUM, addr + 28); |
| |
| addr = frame_unwind_register_unsigned (next_frame, SPARC_SP_REGNUM); |
| if (addr & 1) |
| addr += BIAS; |
| |
| base = addr; |
| for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++) |
| { |
| trad_frame_set_reg_addr (this_cache, regnum, addr); |
| addr += 8; |
| } |
| trad_frame_set_id (this_cache, frame_id_build (base, func)); |
| } |
| |
| |
| static void |
| sparc64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| { |
| struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| |
| tramp_frame_prepend_unwinder (gdbarch, &sparc64_linux_rt_sigframe); |
| |
| sparc64_init_abi (info, gdbarch); |
| |
| /* GNU/Linux has SVR4-style shared libraries... */ |
| set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); |
| set_solib_svr4_fetch_link_map_offsets |
| (gdbarch, svr4_lp64_fetch_link_map_offsets); |
| |
| /* ...which means that we need some special handling when doing |
| prologue analysis. */ |
| tdep->plt_entry_size = 16; |
| |
| /* Enable TLS support. */ |
| set_gdbarch_fetch_tls_load_module_address (gdbarch, |
| svr4_fetch_objfile_link_map); |
| } |
| |
| |
| /* Provide a prototype to silence -Wmissing-prototypes. */ |
| extern void _initialize_sparc64_linux_tdep (void); |
| |
| void |
| _initialize_sparc64_linux_tdep (void) |
| { |
| gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9, |
| GDB_OSABI_LINUX, sparc64_linux_init_abi); |
| } |