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https://github.com/bminor/binutils-gdb.git
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Add NetBSD/i386 gdbserver support
The support is on part with NetBSD/amd64, thus GPR works, single step and software breakpoint are operational, and the SVR4 r_debug integration is functional. gdbserver/ChangeLog: * netbsd-i386-low.cc: Add. * Makefile.in (SFILES): Register "netbsd-i386-low.c". * configure.srv: Add i[34567]86-*-netbsd*.
This commit is contained in:
Kamil Rytarowski
@@ -1,3 +1,9 @@
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2020-10-01 Kamil Rytarowski <n54@gmx.com>
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* netbsd-i386-low.cc: Add.
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* Makefile.in (SFILES): Register "netbsd-i386-low.c".
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* configure.srv: Add i[34567]86-*-netbsd*.
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2020-10-01 Kamil Rytarowski <n54@gmx.com>
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* netbsd-amd64-low.cc (netbsd_x86_64_arch_setup): Remove.
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@@ -194,6 +194,7 @@ SFILES = \
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$(srcdir)/linux-xtensa-low.cc \
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$(srcdir)/mem-break.cc \
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$(srcdir)/netbsd-amd64-low.cc \
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$(srcdir)/netbsd-i386-low.cc \
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$(srcdir)/netbsd-low.cc \
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$(srcdir)/netbsd-low.h \
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$(srcdir)/proc-service.cc \
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@@ -101,6 +101,12 @@ case "${gdbserver_host}" in
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srv_tgtobj="${srv_tgtobj} arch/i386.o"
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srv_mingw=yes
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;;
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i[34567]86-*-netbsd*) srv_regobj=""
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srv_tgtobj="netbsd-low.o netbsd-i386-low.o fork-child.o"
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srv_tgtobj="${srv_tgtobj} nat/fork-inferior.o"
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srv_tgtobj="${srv_tgtobj} nat/netbsd-nat.o"
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srv_tgtobj="${srv_tgtobj} arch/i386.o"
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;;
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ia64-*-linux*) srv_regobj=reg-ia64.o
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srv_tgtobj="$srv_linux_obj linux-ia64-low.o"
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srv_linux_usrregs=yes
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157
gdbserver/netbsd-i386-low.cc
Normal file
157
gdbserver/netbsd-i386-low.cc
Normal file
@@ -0,0 +1,157 @@
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/* Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <limits.h>
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#include "server.h"
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#include "netbsd-low.h"
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#include "gdbsupport/x86-xstate.h"
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#include "arch/i386.h"
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#include "x86-tdesc.h"
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#include "tdesc.h"
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/* The index of various registers inside the regcache. */
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enum netbsd_i386_gdb_regnum
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{
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I386_EAX_REGNUM, /* %eax */
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I386_ECX_REGNUM, /* %ecx */
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I386_EDX_REGNUM, /* %edx */
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I386_EBX_REGNUM, /* %ebx */
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I386_ESP_REGNUM, /* %esp */
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I386_EBP_REGNUM, /* %ebp */
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I386_ESI_REGNUM, /* %esi */
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I386_EDI_REGNUM, /* %edi */
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I386_EIP_REGNUM, /* %eip */
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I386_EFLAGS_REGNUM, /* %eflags */
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I386_CS_REGNUM, /* %cs */
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I386_SS_REGNUM, /* %ss */
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I386_DS_REGNUM, /* %ds */
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I386_ES_REGNUM, /* %es */
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I386_FS_REGNUM, /* %fs */
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I386_GS_REGNUM, /* %gs */
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I386_ST0_REGNUM /* %st(0) */
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};
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/* The fill_function for the general-purpose register set. */
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static void
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netbsd_i386_fill_gregset (struct regcache *regcache, char *buf)
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{
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struct reg *r = (struct reg *) buf;
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#define netbsd_i386_collect_gp(regnum, fld) do { \
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collect_register (regcache, regnum, &r->r_##fld); \
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} while (0)
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netbsd_i386_collect_gp (I386_EAX_REGNUM, eax);
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netbsd_i386_collect_gp (I386_EBX_REGNUM, ebx);
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netbsd_i386_collect_gp (I386_ECX_REGNUM, ecx);
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netbsd_i386_collect_gp (I386_EDX_REGNUM, edx);
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netbsd_i386_collect_gp (I386_ESP_REGNUM, esp);
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netbsd_i386_collect_gp (I386_EBP_REGNUM, ebp);
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netbsd_i386_collect_gp (I386_ESI_REGNUM, esi);
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netbsd_i386_collect_gp (I386_EDI_REGNUM, edi);
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netbsd_i386_collect_gp (I386_EIP_REGNUM, eip);
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netbsd_i386_collect_gp (I386_EFLAGS_REGNUM, eflags);
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netbsd_i386_collect_gp (I386_CS_REGNUM, cs);
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netbsd_i386_collect_gp (I386_SS_REGNUM, ss);
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netbsd_i386_collect_gp (I386_DS_REGNUM, ds);
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netbsd_i386_collect_gp (I386_ES_REGNUM, es);
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netbsd_i386_collect_gp (I386_FS_REGNUM, fs);
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netbsd_i386_collect_gp (I386_GS_REGNUM, gs);
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}
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/* The store_function for the general-purpose register set. */
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static void
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netbsd_i386_store_gregset (struct regcache *regcache, const char *buf)
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{
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struct reg *r = (struct reg *) buf;
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#define netbsd_i386_supply_gp(regnum, fld) do { \
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supply_register (regcache, regnum, &r->r_##fld); \
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} while(0)
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netbsd_i386_supply_gp (I386_EAX_REGNUM, eax);
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netbsd_i386_supply_gp (I386_EBX_REGNUM, ebx);
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netbsd_i386_supply_gp (I386_ECX_REGNUM, ecx);
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netbsd_i386_supply_gp (I386_EDX_REGNUM, edx);
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netbsd_i386_supply_gp (I386_ESP_REGNUM, esp);
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netbsd_i386_supply_gp (I386_EBP_REGNUM, ebp);
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netbsd_i386_supply_gp (I386_ESI_REGNUM, esi);
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netbsd_i386_supply_gp (I386_EDI_REGNUM, edi);
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netbsd_i386_supply_gp (I386_EIP_REGNUM, eip);
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netbsd_i386_supply_gp (I386_EFLAGS_REGNUM, eflags);
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netbsd_i386_supply_gp (I386_CS_REGNUM, cs);
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netbsd_i386_supply_gp (I386_SS_REGNUM, ss);
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netbsd_i386_supply_gp (I386_DS_REGNUM, ds);
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netbsd_i386_supply_gp (I386_ES_REGNUM, es);
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netbsd_i386_supply_gp (I386_FS_REGNUM, fs);
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netbsd_i386_supply_gp (I386_GS_REGNUM, gs);
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}
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/* Description of all the x86-netbsd register sets. */
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static const struct netbsd_regset_info netbsd_target_regsets[] =
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{
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/* General Purpose Registers. */
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{PT_GETREGS, PT_SETREGS, sizeof (struct reg),
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netbsd_i386_fill_gregset, netbsd_i386_store_gregset},
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/* End of list marker. */
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{0, 0, -1, NULL, NULL }
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};
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/* NetBSD target op definitions for the amd64 architecture. */
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class netbsd_i386_target : public netbsd_process_target
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{
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public:
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const netbsd_regset_info *get_regs_info () override;
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void low_arch_setup () override;
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};
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const netbsd_regset_info *
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netbsd_i386_target::get_regs_info ()
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{
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return netbsd_target_regsets;
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}
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/* Initialize the target description for the architecture of the
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inferior. */
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void
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netbsd_i386_target::low_arch_setup ()
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{
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target_desc *tdesc
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= i386_create_target_description (X86_XSTATE_SSE_MASK, false, false);
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init_target_desc (tdesc, i386_expedite_regs);
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current_process ()->tdesc = tdesc;
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}
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/* The singleton target ops object. */
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static netbsd_i386_target the_netbsd_i386_target;
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/* The NetBSD target ops object. */
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netbsd_process_target *the_netbsd_target = &the_netbsd_i386_target;
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