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author | Kamil Rytarowski <n54@gmx.com> | 2020-10-06 18:10:26 +0200 |
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committer | Kamil Rytarowski <n54@gmx.com> | 2020-10-07 14:39:59 +0200 |
commit | 8e1d09292902cff8325b08a64fa5a918c7f9aa4f (patch) | |
tree | 7b8fbc5a7dcd9609b729aeef5d60207192052c83 /gdbserver/netbsd-aarch64-low.cc | |
parent | 64c03bdb6ed0b1b44ebe6f9f151fde3af83bdf38 (diff) | |
download | gdb-8e1d09292902cff8325b08a64fa5a918c7f9aa4f.zip gdb-8e1d09292902cff8325b08a64fa5a918c7f9aa4f.tar.gz gdb-8e1d09292902cff8325b08a64fa5a918c7f9aa4f.tar.bz2 |
Add NetBSD/aarch64 gdbserver support
The support is on par with NetBSD/amd64, thus GPR works,
single step and software breakpoint are operational, and the
SVR4 r_debug integration is functional.
gdbserver/ChangeLog:
* netbsd-aarch64-low.cc: Add.
* Makefile.in (SFILES): Register "netbsd-aarch64-low.c".
* configure.srv: Add aarch64*-*-netbsd*.
Diffstat (limited to 'gdbserver/netbsd-aarch64-low.cc')
-rw-r--r-- | gdbserver/netbsd-aarch64-low.cc | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/gdbserver/netbsd-aarch64-low.cc b/gdbserver/netbsd-aarch64-low.cc new file mode 100644 index 0000000..ca76119 --- /dev/null +++ b/gdbserver/netbsd-aarch64-low.cc @@ -0,0 +1,113 @@ +/* Copyright (C) 2020 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 <http://www.gnu.org/licenses/>. */ + +#include <sys/types.h> +#include <sys/ptrace.h> +#include <limits.h> + +#include "server.h" +#include "netbsd-low.h" +#include "arch/aarch64.h" +#include "arch/aarch64-insn.h" +#include "tdesc.h" + +/* The fill_function for the general-purpose register set. */ + +static void +netbsd_aarch64_fill_gregset (struct regcache *regcache, char *buf) +{ + struct reg *r = (struct reg *) buf; + +#define netbsd_aarch64_collect_gp(regnum, fld) do { \ + collect_register (regcache, regnum, &r->fld); \ + } while (0) + + for (size_t i = 0; i < ARRAY_SIZE (r->r_reg); i++) + netbsd_aarch64_collect_gp (AARCH64_X0_REGNUM + i, r_reg[i]); + + netbsd_aarch64_collect_gp (AARCH64_SP_REGNUM, r_sp); + netbsd_aarch64_collect_gp (AARCH64_PC_REGNUM, r_pc); +} + +/* The store_function for the general-purpose register set. */ + +static void +netbsd_aarch64_store_gregset (struct regcache *regcache, const char *buf) +{ + struct reg *r = (struct reg *) buf; + +#define netbsd_aarch64_supply_gp(regnum, fld) do { \ + supply_register (regcache, regnum, &r->fld); \ + } while(0) + + for (size_t i = 0; i < ARRAY_SIZE (r->r_reg); i++) + netbsd_aarch64_supply_gp (AARCH64_X0_REGNUM + i, r_reg[i]); + + netbsd_aarch64_supply_gp (AARCH64_SP_REGNUM, r_sp); + netbsd_aarch64_supply_gp (AARCH64_PC_REGNUM, r_pc); +} + +/* Description of all the aarch64-netbsd register sets. */ + +static const struct netbsd_regset_info netbsd_target_regsets[] = +{ + /* General Purpose Registers. */ + {PT_GETREGS, PT_SETREGS, sizeof (struct reg), + netbsd_aarch64_fill_gregset, netbsd_aarch64_store_gregset}, + /* End of list marker. */ + {0, 0, -1, NULL, NULL } +}; + +/* NetBSD target op definitions for the aarch64 architecture. */ + +class netbsd_aarch64_target : public netbsd_process_target +{ +protected: + const netbsd_regset_info *get_regs_info () override; + + void low_arch_setup () override; +}; + +/* Return the information to access registers. */ + +const netbsd_regset_info * +netbsd_aarch64_target::get_regs_info () +{ + return netbsd_target_regsets; +} + +/* Architecture-specific setup for the current process. */ + +void +netbsd_aarch64_target::low_arch_setup () +{ + target_desc *tdesc + = aarch64_create_target_description (0, false); + + static const char *expedite_regs_aarch64[] = { "x29", "sp", "pc", NULL }; + init_target_desc (tdesc, expedite_regs_aarch64); + + current_process ()->tdesc = tdesc; +} + +/* The singleton target ops object. */ + +static netbsd_aarch64_target the_netbsd_aarch64_target; + +/* The NetBSD target ops object. */ + +netbsd_process_target *the_netbsd_target = &the_netbsd_aarch64_target; |