From cced5e27e61ec91c00eecd61b48096f7e49b7141 Mon Sep 17 00:00:00 2001 From: Mark Kettenis Date: Sat, 18 Oct 2003 18:41:22 +0000 Subject: Add NetBSD/amd64 native configuration: * x86-64-tdep.h (amd64nbsd_r_reg_offset): Add extern declarations. * amd64nbsd-tdep.c: New file. * amd64nbsd-nat.c: New file. * amd64bsd-nat.c: New file. * config/i386/nbsd64.mh: New file. * config/i386/nbsd64.mt: New file. * configure.host: Add x86_64-*-netbsd*. * configure.tgt: Add x86_64-*-netbsd*. * Makefile.in (amd64bsd-nat.o, amd64nbsd-nat.o, amd64nbsd-tdep.o): New targets. * NEWS (New native configurations): Mention NetBSD/amd64. --- gdb/amd64nbsd-tdep.c | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 gdb/amd64nbsd-tdep.c (limited to 'gdb/amd64nbsd-tdep.c') diff --git a/gdb/amd64nbsd-tdep.c b/gdb/amd64nbsd-tdep.c new file mode 100644 index 0000000..5500ed1 --- /dev/null +++ b/gdb/amd64nbsd-tdep.c @@ -0,0 +1,129 @@ +/* Target-dependent code for NetBSD/amd64. + + Copyright 2003 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 "arch-utils.h" +#include "frame.h" +#include "gdbcore.h" +#include "osabi.h" + +#include "gdb_assert.h" + +#include "nbsd-tdep.h" +#include "x86-64-tdep.h" + +/* Support for signal handlers. */ + +/* Assuming NEXT_FRAME is for a frame following a BSD sigtramp + routine, return the address of the associated sigcontext structure. */ + +static CORE_ADDR +amd64nbsd_sigcontext_addr (struct frame_info *next_frame) +{ + CORE_ADDR sp; + + /* The stack pointer points at `struct sigcontext' upon entry of a + signal trampoline. */ + sp = frame_unwind_register_unsigned (next_frame, X86_64_RSP_REGNUM); + return sp; +} + +/* NetBSD 2.0 or later. */ + +/* Mapping between the general-purpose registers in `struct reg' + format and GDB's register cache layout. */ + +/* From . */ +int amd64nbsd_r_reg_offset[] = +{ + 14 * 8, /* %rax */ + 13 * 8, /* %rbx */ + 3 * 8, /* %rcx */ + 2 * 8, /* %rdx */ + 1 * 8, /* %rsi */ + 0 * 8, /* %rdi */ + 12 * 8, /* %rbp */ + 24 * 8, /* %rsp */ + 4 * 8, /* %r8 .. */ + 5 * 8, + 6 * 8, + 7 * 8, + 8 * 8, + 9 * 8, + 10 * 8, + 11 * 8, /* ... %r15 */ + 21 * 8, /* %rip */ + 23 * 8, /* %eflags */ + 18 * 8, /* %ds */ + 17 * 8, /* %es */ + 16 * 8, /* %fs */ + 15 * 8 /* %gs */ +}; + +static void +amd64nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + int *sc_reg_offset; + int i; + + /* Initialize general-purpose register set details first. */ + tdep->gregset_reg_offset = amd64nbsd_r_reg_offset; + tdep->gregset_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset); + tdep->sizeof_gregset = 26 * 8; + + x86_64_init_abi (info, gdbarch); + + tdep->jb_pc_offset = 7 * 8; + + /* NetBSD has its own convention for signal trampolines. */ + set_gdbarch_pc_in_sigtramp (gdbarch, nbsd_pc_in_sigtramp); + + /* Initialize the array with register offsets in `struct + sigcontext'. This `struct sigcontext' has an sc_mcontext member + at offset 32, and in we have an explicit comment + saying that `struct reg' is the same as mcontext.__gregs. */ + tdep->sc_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset); + tdep->sc_reg_offset = XCALLOC (tdep->sc_num_regs, int); + for (i = 0; i < tdep->sc_num_regs; i++) + { + if (amd64nbsd_r_reg_offset[i] < 0) + tdep->sc_reg_offset[i] = -1; + else + tdep->sc_reg_offset[i] = 32 + amd64nbsd_r_reg_offset[i]; + } + + tdep->sigcontext_addr = amd64nbsd_sigcontext_addr; +} + + +/* Provide a prototype to silence -Wmissing-prototypes. */ +void _initialize_amd64nbsd_tdep (void); + +void +_initialize_amd64nbsd_ndep (void) +{ + /* The NetBSD/amd64 native dependent code makes this assumption. */ + gdb_assert (ARRAY_SIZE (amd64nbsd_r_reg_offset) == X86_64_NUM_GREGS); + + gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, + GDB_OSABI_NETBSD_ELF, amd64nbsd_init_abi); +} -- cgit v1.1