Add minimal and functional NetBSD/amd64 gdbserver
Implement the following functionality: create_inferior,
post_create_inferior, attach, kill, detach, mourn, join, thread_alive,
resume, wait, fetch_registers, store_registers, read_memory, write_memory,
request_interrupt, supports_read_auxv, read_auxv,
supports_hardware_single_step, sw_breakpoint_from_kind,
supports_z_point_type, insert_point, remove_point,
stopped_by_sw_breakpoint, supports_qxfer_siginfo, qxfer_siginfo,
supports_stopped_by_sw_breakpoint, supports_non_stop,
supports_multi_process, supports_fork_events, supports_vfork_events,
supports_exec_events, supports_disable_randomization,
supports_qxfer_libraries_svr4, qxfer_libraries_svr4,
supports_pid_to_exec_file, pid_to_exec_file, thread_name,
supports_catch_syscall.
The only CPU architecture supported: x86_64.
Implement only support for hardware assisted single step and
software breakpoint.
Implement support only for regular X86 registers, thus no FPU.
gdbserver/ChangeLog:
* netbsd-low.cc: Add.
* netbsd-low.h: Likewise.
* netbsd-amd64-low.cc: Likewise.
* Makefile.in (SFILES): Register "netbsd-low.cc", "netbsd-low.h",
"netbsd-amd64-low.cc".
* configure.srv: Add x86_64-*-netbsd*.
This commit is contained in:
Kamil Rytarowski
parent
cf4ac4be12
commit
62ba50486f
@ -1,3 +1,12 @@
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2020-09-10 Kamil Rytarowski <n54@gmx.com>
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* netbsd-low.cc: Add.
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* netbsd-low.h: Likewise.
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* netbsd-amd64-low.cc: Likewise.
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* Makefile.in (SFILES): Register "netbsd-low.cc", "netbsd-low.h",
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"netbsd-amd64-low.cc".
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* configure.srv: Add x86_64-*-netbsd*.
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2020-08-13 Simon Marchi <simon.marchi@polymtl.ca>
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* server.cc (captured_main): Accept multiple `--selftest=`
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@ -193,6 +193,9 @@ SFILES = \
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$(srcdir)/linux-x86-low.cc \
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$(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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$(srcdir)/netbsd-low.cc \
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$(srcdir)/netbsd-low.h \
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$(srcdir)/proc-service.cc \
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$(srcdir)/proc-service.list \
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$(srcdir)/regcache.cc \
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@ -349,6 +349,12 @@ case "${gdbserver_host}" in
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srv_tgtobj="${srv_tgtobj} nat/windows-nat.o"
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srv_tgtobj="${srv_tgtobj} arch/amd64.o arch/i386.o"
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;;
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x86_64-*-netbsd*) srv_regobj=""
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srv_tgtobj="netbsd-low.o netbsd-amd64-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="${srv_tgtobj} arch/amd64.o"
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;;
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xtensa*-*-linux*) srv_regobj=reg-xtensa.o
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srv_tgtobj="$srv_linux_obj linux-xtensa-low.o"
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187
gdbserver/netbsd-amd64-low.cc
Normal file
187
gdbserver/netbsd-amd64-low.cc
Normal file
@ -0,0 +1,187 @@
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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/amd64.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_x86_64_gdb_regnum
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{
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AMD64_RAX_REGNUM, /* %rax */
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AMD64_RBX_REGNUM, /* %rbx */
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AMD64_RCX_REGNUM, /* %rcx */
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AMD64_RDX_REGNUM, /* %rdx */
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AMD64_RSI_REGNUM, /* %rsi */
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AMD64_RDI_REGNUM, /* %rdi */
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AMD64_RBP_REGNUM, /* %rbp */
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AMD64_RSP_REGNUM, /* %rsp */
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AMD64_R8_REGNUM, /* %r8 */
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AMD64_R9_REGNUM, /* %r9 */
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AMD64_R10_REGNUM, /* %r10 */
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AMD64_R11_REGNUM, /* %r11 */
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AMD64_R12_REGNUM, /* %r12 */
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AMD64_R13_REGNUM, /* %r13 */
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AMD64_R14_REGNUM, /* %r14 */
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AMD64_R15_REGNUM, /* %r15 */
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AMD64_RIP_REGNUM, /* %rip */
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AMD64_EFLAGS_REGNUM, /* %eflags */
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AMD64_CS_REGNUM, /* %cs */
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AMD64_SS_REGNUM, /* %ss */
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AMD64_DS_REGNUM, /* %ds */
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AMD64_ES_REGNUM, /* %es */
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AMD64_FS_REGNUM, /* %fs */
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AMD64_GS_REGNUM, /* %gs */
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AMD64_ST0_REGNUM = 24, /* %st0 */
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AMD64_ST1_REGNUM, /* %st1 */
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AMD64_FCTRL_REGNUM = AMD64_ST0_REGNUM + 8,
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AMD64_FSTAT_REGNUM = AMD64_ST0_REGNUM + 9,
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AMD64_FTAG_REGNUM = AMD64_ST0_REGNUM + 10,
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AMD64_XMM0_REGNUM = 40, /* %xmm0 */
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AMD64_XMM1_REGNUM, /* %xmm1 */
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AMD64_MXCSR_REGNUM = AMD64_XMM0_REGNUM + 16,
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AMD64_YMM0H_REGNUM, /* %ymm0h */
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AMD64_YMM15H_REGNUM = AMD64_YMM0H_REGNUM + 15,
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AMD64_BND0R_REGNUM = AMD64_YMM15H_REGNUM + 1,
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AMD64_BND3R_REGNUM = AMD64_BND0R_REGNUM + 3,
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AMD64_BNDCFGU_REGNUM,
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AMD64_BNDSTATUS_REGNUM,
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AMD64_XMM16_REGNUM,
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AMD64_XMM31_REGNUM = AMD64_XMM16_REGNUM + 15,
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AMD64_YMM16H_REGNUM,
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AMD64_YMM31H_REGNUM = AMD64_YMM16H_REGNUM + 15,
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AMD64_K0_REGNUM,
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AMD64_K7_REGNUM = AMD64_K0_REGNUM + 7,
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AMD64_ZMM0H_REGNUM,
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AMD64_ZMM31H_REGNUM = AMD64_ZMM0H_REGNUM + 31,
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AMD64_PKRU_REGNUM,
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AMD64_FSBASE_REGNUM,
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AMD64_GSBASE_REGNUM
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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_x86_64_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_x86_64_collect_gp(regnum, fld) do { \
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collect_register (regcache, regnum, &r->regs[_REG_##fld]); \
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} while (0)
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netbsd_x86_64_collect_gp (AMD64_RAX_REGNUM, RAX);
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netbsd_x86_64_collect_gp (AMD64_RBX_REGNUM, RBX);
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netbsd_x86_64_collect_gp (AMD64_RCX_REGNUM, RCX);
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netbsd_x86_64_collect_gp (AMD64_RDX_REGNUM, RDX);
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netbsd_x86_64_collect_gp (AMD64_RSI_REGNUM, RSI);
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netbsd_x86_64_collect_gp (AMD64_RDI_REGNUM, RDI);
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netbsd_x86_64_collect_gp (AMD64_RBP_REGNUM, RBP);
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netbsd_x86_64_collect_gp (AMD64_RSP_REGNUM, RSP);
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netbsd_x86_64_collect_gp (AMD64_R8_REGNUM, R8);
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netbsd_x86_64_collect_gp (AMD64_R9_REGNUM, R9);
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netbsd_x86_64_collect_gp (AMD64_R10_REGNUM, R10);
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netbsd_x86_64_collect_gp (AMD64_R11_REGNUM, R11);
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netbsd_x86_64_collect_gp (AMD64_R12_REGNUM, R12);
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netbsd_x86_64_collect_gp (AMD64_R13_REGNUM, R13);
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netbsd_x86_64_collect_gp (AMD64_R14_REGNUM, R14);
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netbsd_x86_64_collect_gp (AMD64_R15_REGNUM, R15);
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netbsd_x86_64_collect_gp (AMD64_RIP_REGNUM, RIP);
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netbsd_x86_64_collect_gp (AMD64_EFLAGS_REGNUM, RFLAGS);
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netbsd_x86_64_collect_gp (AMD64_CS_REGNUM, CS);
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netbsd_x86_64_collect_gp (AMD64_SS_REGNUM, SS);
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netbsd_x86_64_collect_gp (AMD64_DS_REGNUM, DS);
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netbsd_x86_64_collect_gp (AMD64_ES_REGNUM, ES);
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netbsd_x86_64_collect_gp (AMD64_FS_REGNUM, FS);
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netbsd_x86_64_collect_gp (AMD64_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_x86_64_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_x86_64_supply_gp(regnum, fld) do { \
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supply_register (regcache, regnum, &r->regs[_REG_##fld]); \
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} while(0)
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netbsd_x86_64_supply_gp (AMD64_RAX_REGNUM, RAX);
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netbsd_x86_64_supply_gp (AMD64_RBX_REGNUM, RBX);
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netbsd_x86_64_supply_gp (AMD64_RCX_REGNUM, RCX);
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netbsd_x86_64_supply_gp (AMD64_RDX_REGNUM, RDX);
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netbsd_x86_64_supply_gp (AMD64_RSI_REGNUM, RSI);
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netbsd_x86_64_supply_gp (AMD64_RDI_REGNUM, RDI);
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netbsd_x86_64_supply_gp (AMD64_RBP_REGNUM, RBP);
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netbsd_x86_64_supply_gp (AMD64_RSP_REGNUM, RSP);
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netbsd_x86_64_supply_gp (AMD64_R8_REGNUM, R8);
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netbsd_x86_64_supply_gp (AMD64_R9_REGNUM, R9);
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netbsd_x86_64_supply_gp (AMD64_R10_REGNUM, R10);
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netbsd_x86_64_supply_gp (AMD64_R11_REGNUM, R11);
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netbsd_x86_64_supply_gp (AMD64_R12_REGNUM, R12);
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netbsd_x86_64_supply_gp (AMD64_R13_REGNUM, R13);
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netbsd_x86_64_supply_gp (AMD64_R14_REGNUM, R14);
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netbsd_x86_64_supply_gp (AMD64_R15_REGNUM, R15);
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netbsd_x86_64_supply_gp (AMD64_RIP_REGNUM, RIP);
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netbsd_x86_64_supply_gp (AMD64_EFLAGS_REGNUM, RFLAGS);
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netbsd_x86_64_supply_gp (AMD64_CS_REGNUM, CS);
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netbsd_x86_64_supply_gp (AMD64_SS_REGNUM, SS);
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netbsd_x86_64_supply_gp (AMD64_DS_REGNUM, DS);
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netbsd_x86_64_supply_gp (AMD64_ES_REGNUM, ES);
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netbsd_x86_64_supply_gp (AMD64_FS_REGNUM, FS);
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netbsd_x86_64_supply_gp (AMD64_GS_REGNUM, GS);
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}
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/* Implements the netbsd_target_ops.arch_setup routine. */
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static void
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netbsd_x86_64_arch_setup (void)
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{
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struct target_desc *tdesc
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= amd64_create_target_description (X86_XSTATE_SSE_MASK, false, false, false);
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init_target_desc (tdesc, amd64_expedite_regs);
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netbsd_tdesc = tdesc;
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}
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/* Description of all the x86-netbsd register sets. */
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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_x86_64_fill_gregset, netbsd_x86_64_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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/* The netbsd_target_ops vector for x86-netbsd. */
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struct netbsd_target_ops the_low_target =
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{
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netbsd_x86_64_arch_setup,
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};
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1327
gdbserver/netbsd-low.cc
Normal file
1327
gdbserver/netbsd-low.cc
Normal file
File diff suppressed because it is too large
Load Diff
154
gdbserver/netbsd-low.h
Normal file
154
gdbserver/netbsd-low.h
Normal file
@ -0,0 +1,154 @@
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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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#ifndef GDBSERVER_NETBSD_LOW_H
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#define GDBSERVER_NETBSD_LOW_H
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struct regcache;
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struct target_desc;
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/* Some information relative to a given register set. */
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struct netbsd_regset_info
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{
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/* The ptrace request needed to get/set registers of this set. */
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int get_request, set_request;
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/* The size of the register set. */
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int size;
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/* Fill the buffer BUF from the contents of the given REGCACHE. */
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void (*fill_function) (struct regcache *regcache, char *buf);
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/* Store the register value in BUF in the given REGCACHE. */
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void (*store_function) (struct regcache *regcache, const char *buf);
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};
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/* A list of regsets for the target being debugged, terminated by an entry
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where the size is negative.
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This list should be created by the target-specific code. */
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extern struct netbsd_regset_info netbsd_target_regsets[];
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/* The target-specific operations for NetBSD support. */
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struct netbsd_target_ops
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{
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/* Architecture-specific setup. */
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void (*arch_setup) ();
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};
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/* Target ops definitions for a NetBSD target. */
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class netbsd_process_target : public process_stratum_target
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{
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public:
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int create_inferior (const char *program,
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const std::vector<char *> &program_args) override;
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void post_create_inferior () override;
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int attach (unsigned long pid) override;
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int kill (process_info *proc) override;
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int detach (process_info *proc) override;
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void mourn (process_info *proc) override;
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void join (int pid) override;
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bool thread_alive (ptid_t pid) override;
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void resume (thread_resume *resume_info, size_t n) override;
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ptid_t wait (ptid_t ptid, target_waitstatus *status,
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int options) override;
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void fetch_registers (regcache *regcache, int regno) override;
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void store_registers (regcache *regcache, int regno) override;
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int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
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int len) override;
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int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
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int len) override;
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void request_interrupt () override;
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bool supports_read_auxv () override;
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int read_auxv (CORE_ADDR offset, unsigned char *myaddr,
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unsigned int len) override;
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bool supports_hardware_single_step () override;
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const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
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bool supports_z_point_type (char z_type) override;
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int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
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int size, struct raw_breakpoint *bp) override;
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int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
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int size, struct raw_breakpoint *bp) override;
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bool stopped_by_sw_breakpoint () override;
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bool supports_qxfer_siginfo () override;
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int qxfer_siginfo (const char *annex, unsigned char *readbuf,
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unsigned const char *writebuf, CORE_ADDR offset,
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int len) override;
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bool supports_stopped_by_sw_breakpoint () override;
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bool supports_non_stop () override;
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bool supports_multi_process () override;
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bool supports_fork_events () override;
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bool supports_vfork_events () override;
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bool supports_exec_events () override;
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bool supports_disable_randomization () override;
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bool supports_qxfer_libraries_svr4 () override;
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int qxfer_libraries_svr4 (const char*, unsigned char*, const unsigned char*,
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CORE_ADDR, int) override;
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bool supports_pid_to_exec_file () override;
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char *pid_to_exec_file (int pid) override;
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const char *thread_name (ptid_t thread) override;
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bool supports_catch_syscall () override;
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};
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/* The inferior's target description. This is a global because the
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NetBSD ports support neither bi-arch nor multi-process. */
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extern struct netbsd_target_ops the_low_target;
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/* XXX: multilib */
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extern const struct target_desc *netbsd_tdesc;
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#endif /* GDBSERVER_NETBSD_LOW_H */
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