b68b1b58d6
The syscall literal names are not stable on NetBSD and can change once a syscall is versioned. Thus these names are internal to the system and in GDB mostly descriptive, not intended to be a stable interface with fixed names across GDB and NetBSD versions to track certain syscalls. gdb/ChangeLog: * nbsd-tdep.c: Include "xml-syscall.h". (nbsd_init_abi): Call `set_xml_syscall_file_name'.
477 lines
11 KiB
C
477 lines
11 KiB
C
/* Common target-dependent code for NetBSD systems.
|
|
|
|
Copyright (C) 2002-2020 Free Software Foundation, Inc.
|
|
|
|
Contributed by Wasabi Systems, 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 "defs.h"
|
|
#include "auxv.h"
|
|
#include "solib-svr4.h"
|
|
#include "nbsd-tdep.h"
|
|
#include "gdbarch.h"
|
|
#include "objfiles.h"
|
|
#include "xml-syscall.h"
|
|
|
|
/* Flags in the 'kve_protection' field in struct kinfo_vmentry. These
|
|
match the KVME_PROT_* constants in <sys/sysctl.h>. */
|
|
|
|
#define KINFO_VME_PROT_READ 0x00000001
|
|
#define KINFO_VME_PROT_WRITE 0x00000002
|
|
#define KINFO_VME_PROT_EXEC 0x00000004
|
|
|
|
/* Flags in the 'kve_flags' field in struct kinfo_vmentry. These
|
|
match the KVME_FLAG_* constants in <sys/sysctl.h>. */
|
|
|
|
#define KINFO_VME_FLAG_COW 0x00000001
|
|
#define KINFO_VME_FLAG_NEEDS_COPY 0x00000002
|
|
#define KINFO_VME_FLAG_NOCOREDUMP 0x00000004
|
|
#define KINFO_VME_FLAG_PAGEABLE 0x00000008
|
|
#define KINFO_VME_FLAG_GROWS_UP 0x00000010
|
|
#define KINFO_VME_FLAG_GROWS_DOWN 0x00000020
|
|
|
|
/* FIXME: kettenis/20060115: We should really eliminate the next two
|
|
functions completely. */
|
|
|
|
struct link_map_offsets *
|
|
nbsd_ilp32_solib_svr4_fetch_link_map_offsets (void)
|
|
{
|
|
return svr4_ilp32_fetch_link_map_offsets ();
|
|
}
|
|
|
|
struct link_map_offsets *
|
|
nbsd_lp64_solib_svr4_fetch_link_map_offsets (void)
|
|
{
|
|
return svr4_lp64_fetch_link_map_offsets ();
|
|
}
|
|
|
|
int
|
|
nbsd_pc_in_sigtramp (CORE_ADDR pc, const char *func_name)
|
|
{
|
|
/* Check for libc-provided signal trampoline. All such trampolines
|
|
have function names which begin with "__sigtramp". */
|
|
|
|
return (func_name != NULL
|
|
&& startswith (func_name, "__sigtramp"));
|
|
}
|
|
|
|
/* This enum is derived from NETBSD's <sys/signal.h>. */
|
|
|
|
enum
|
|
{
|
|
NBSD_SIGHUP = 1,
|
|
NBSD_SIGINT = 2,
|
|
NBSD_SIGQUIT = 3,
|
|
NBSD_SIGILL = 4,
|
|
NBSD_SIGTRAP = 5,
|
|
NBSD_SIGABRT = 6,
|
|
NBSD_SIGEMT = 7,
|
|
NBSD_SIGFPE = 8,
|
|
NBSD_SIGKILL = 9,
|
|
NBSD_SIGBUS = 10,
|
|
NBSD_SIGSEGV = 11,
|
|
NBSD_SIGSYS = 12,
|
|
NBSD_SIGPIPE = 13,
|
|
NBSD_SIGALRM = 14,
|
|
NBSD_SIGTERM = 15,
|
|
NBSD_SIGURG = 16,
|
|
NBSD_SIGSTOP = 17,
|
|
NBSD_SIGTSTP = 18,
|
|
NBSD_SIGCONT = 19,
|
|
NBSD_SIGCHLD = 20,
|
|
NBSD_SIGTTIN = 21,
|
|
NBSD_SIGTTOU = 22,
|
|
NBSD_SIGIO = 23,
|
|
NBSD_SIGXCPU = 24,
|
|
NBSD_SIGXFSZ = 25,
|
|
NBSD_SIGVTALRM = 26,
|
|
NBSD_SIGPROF = 27,
|
|
NBSD_SIGWINCH = 28,
|
|
NBSD_SIGINFO = 29,
|
|
NBSD_SIGUSR1 = 30,
|
|
NBSD_SIGUSR2 = 31,
|
|
NBSD_SIGPWR = 32,
|
|
NBSD_SIGRTMIN = 33,
|
|
NBSD_SIGRTMAX = 63,
|
|
};
|
|
|
|
/* Implement the "gdb_signal_from_target" gdbarch method. */
|
|
|
|
static enum gdb_signal
|
|
nbsd_gdb_signal_from_target (struct gdbarch *gdbarch, int signal)
|
|
{
|
|
switch (signal)
|
|
{
|
|
case 0:
|
|
return GDB_SIGNAL_0;
|
|
|
|
case NBSD_SIGHUP:
|
|
return GDB_SIGNAL_HUP;
|
|
|
|
case NBSD_SIGINT:
|
|
return GDB_SIGNAL_INT;
|
|
|
|
case NBSD_SIGQUIT:
|
|
return GDB_SIGNAL_QUIT;
|
|
|
|
case NBSD_SIGILL:
|
|
return GDB_SIGNAL_ILL;
|
|
|
|
case NBSD_SIGTRAP:
|
|
return GDB_SIGNAL_TRAP;
|
|
|
|
case NBSD_SIGABRT:
|
|
return GDB_SIGNAL_ABRT;
|
|
|
|
case NBSD_SIGEMT:
|
|
return GDB_SIGNAL_EMT;
|
|
|
|
case NBSD_SIGFPE:
|
|
return GDB_SIGNAL_FPE;
|
|
|
|
case NBSD_SIGKILL:
|
|
return GDB_SIGNAL_KILL;
|
|
|
|
case NBSD_SIGBUS:
|
|
return GDB_SIGNAL_BUS;
|
|
|
|
case NBSD_SIGSEGV:
|
|
return GDB_SIGNAL_SEGV;
|
|
|
|
case NBSD_SIGSYS:
|
|
return GDB_SIGNAL_SYS;
|
|
|
|
case NBSD_SIGPIPE:
|
|
return GDB_SIGNAL_PIPE;
|
|
|
|
case NBSD_SIGALRM:
|
|
return GDB_SIGNAL_ALRM;
|
|
|
|
case NBSD_SIGTERM:
|
|
return GDB_SIGNAL_TERM;
|
|
|
|
case NBSD_SIGURG:
|
|
return GDB_SIGNAL_URG;
|
|
|
|
case NBSD_SIGSTOP:
|
|
return GDB_SIGNAL_STOP;
|
|
|
|
case NBSD_SIGTSTP:
|
|
return GDB_SIGNAL_TSTP;
|
|
|
|
case NBSD_SIGCONT:
|
|
return GDB_SIGNAL_CONT;
|
|
|
|
case NBSD_SIGCHLD:
|
|
return GDB_SIGNAL_CHLD;
|
|
|
|
case NBSD_SIGTTIN:
|
|
return GDB_SIGNAL_TTIN;
|
|
|
|
case NBSD_SIGTTOU:
|
|
return GDB_SIGNAL_TTOU;
|
|
|
|
case NBSD_SIGIO:
|
|
return GDB_SIGNAL_IO;
|
|
|
|
case NBSD_SIGXCPU:
|
|
return GDB_SIGNAL_XCPU;
|
|
|
|
case NBSD_SIGXFSZ:
|
|
return GDB_SIGNAL_XFSZ;
|
|
|
|
case NBSD_SIGVTALRM:
|
|
return GDB_SIGNAL_VTALRM;
|
|
|
|
case NBSD_SIGPROF:
|
|
return GDB_SIGNAL_PROF;
|
|
|
|
case NBSD_SIGWINCH:
|
|
return GDB_SIGNAL_WINCH;
|
|
|
|
case NBSD_SIGINFO:
|
|
return GDB_SIGNAL_INFO;
|
|
|
|
case NBSD_SIGUSR1:
|
|
return GDB_SIGNAL_USR1;
|
|
|
|
case NBSD_SIGUSR2:
|
|
return GDB_SIGNAL_USR2;
|
|
|
|
case NBSD_SIGPWR:
|
|
return GDB_SIGNAL_PWR;
|
|
|
|
/* SIGRTMIN and SIGRTMAX are not continuous in <gdb/signals.def>,
|
|
therefore we have to handle them here. */
|
|
case NBSD_SIGRTMIN:
|
|
return GDB_SIGNAL_REALTIME_33;
|
|
|
|
case NBSD_SIGRTMAX:
|
|
return GDB_SIGNAL_REALTIME_63;
|
|
}
|
|
|
|
if (signal >= NBSD_SIGRTMIN + 1 && signal <= NBSD_SIGRTMAX - 1)
|
|
{
|
|
int offset = signal - NBSD_SIGRTMIN + 1;
|
|
|
|
return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_34 + offset);
|
|
}
|
|
|
|
return GDB_SIGNAL_UNKNOWN;
|
|
}
|
|
|
|
/* Implement the "gdb_signal_to_target" gdbarch method. */
|
|
|
|
static int
|
|
nbsd_gdb_signal_to_target (struct gdbarch *gdbarch,
|
|
enum gdb_signal signal)
|
|
{
|
|
switch (signal)
|
|
{
|
|
case GDB_SIGNAL_0:
|
|
return 0;
|
|
|
|
case GDB_SIGNAL_HUP:
|
|
return NBSD_SIGHUP;
|
|
|
|
case GDB_SIGNAL_INT:
|
|
return NBSD_SIGINT;
|
|
|
|
case GDB_SIGNAL_QUIT:
|
|
return NBSD_SIGQUIT;
|
|
|
|
case GDB_SIGNAL_ILL:
|
|
return NBSD_SIGILL;
|
|
|
|
case GDB_SIGNAL_TRAP:
|
|
return NBSD_SIGTRAP;
|
|
|
|
case GDB_SIGNAL_ABRT:
|
|
return NBSD_SIGABRT;
|
|
|
|
case GDB_SIGNAL_EMT:
|
|
return NBSD_SIGEMT;
|
|
|
|
case GDB_SIGNAL_FPE:
|
|
return NBSD_SIGFPE;
|
|
|
|
case GDB_SIGNAL_KILL:
|
|
return NBSD_SIGKILL;
|
|
|
|
case GDB_SIGNAL_BUS:
|
|
return NBSD_SIGBUS;
|
|
|
|
case GDB_SIGNAL_SEGV:
|
|
return NBSD_SIGSEGV;
|
|
|
|
case GDB_SIGNAL_SYS:
|
|
return NBSD_SIGSYS;
|
|
|
|
case GDB_SIGNAL_PIPE:
|
|
return NBSD_SIGPIPE;
|
|
|
|
case GDB_SIGNAL_ALRM:
|
|
return NBSD_SIGALRM;
|
|
|
|
case GDB_SIGNAL_TERM:
|
|
return NBSD_SIGTERM;
|
|
|
|
case GDB_SIGNAL_URG:
|
|
return NBSD_SIGSTOP;
|
|
|
|
case GDB_SIGNAL_TSTP:
|
|
return NBSD_SIGTSTP;
|
|
|
|
case GDB_SIGNAL_CONT:
|
|
return NBSD_SIGCONT;
|
|
|
|
case GDB_SIGNAL_CHLD:
|
|
return NBSD_SIGCHLD;
|
|
|
|
case GDB_SIGNAL_TTIN:
|
|
return NBSD_SIGTTIN;
|
|
|
|
case GDB_SIGNAL_TTOU:
|
|
return NBSD_SIGTTOU;
|
|
|
|
case GDB_SIGNAL_IO:
|
|
return NBSD_SIGIO;
|
|
|
|
case GDB_SIGNAL_XCPU:
|
|
return NBSD_SIGXCPU;
|
|
|
|
case GDB_SIGNAL_XFSZ:
|
|
return NBSD_SIGXFSZ;
|
|
|
|
case GDB_SIGNAL_VTALRM:
|
|
return NBSD_SIGVTALRM;
|
|
|
|
case GDB_SIGNAL_PROF:
|
|
return NBSD_SIGPROF;
|
|
|
|
case GDB_SIGNAL_WINCH:
|
|
return NBSD_SIGWINCH;
|
|
|
|
case GDB_SIGNAL_INFO:
|
|
return NBSD_SIGINFO;
|
|
|
|
case GDB_SIGNAL_USR1:
|
|
return NBSD_SIGUSR1;
|
|
|
|
case GDB_SIGNAL_USR2:
|
|
return NBSD_SIGUSR2;
|
|
|
|
case GDB_SIGNAL_PWR:
|
|
return NBSD_SIGPWR;
|
|
|
|
/* GDB_SIGNAL_REALTIME_33 is not continuous in <gdb/signals.def>,
|
|
therefore we have to handle it here. */
|
|
case GDB_SIGNAL_REALTIME_33:
|
|
return NBSD_SIGRTMIN;
|
|
|
|
/* Same comment applies to _64. */
|
|
case GDB_SIGNAL_REALTIME_63:
|
|
return NBSD_SIGRTMAX;
|
|
}
|
|
|
|
if (signal >= GDB_SIGNAL_REALTIME_34
|
|
&& signal <= GDB_SIGNAL_REALTIME_62)
|
|
{
|
|
int offset = signal - GDB_SIGNAL_REALTIME_32;
|
|
|
|
return NBSD_SIGRTMIN + 1 + offset;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* Shared library resolver handling. */
|
|
|
|
static CORE_ADDR
|
|
nbsd_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
|
|
{
|
|
struct bound_minimal_symbol msym;
|
|
|
|
msym = lookup_minimal_symbol ("_rtld_bind_start", NULL, NULL);
|
|
if (msym.minsym && BMSYMBOL_VALUE_ADDRESS (msym) == pc)
|
|
return frame_unwind_caller_pc (get_current_frame ());
|
|
else
|
|
return find_solib_trampoline_target (get_current_frame (), pc);
|
|
}
|
|
|
|
/* See nbsd-tdep.h. */
|
|
|
|
void
|
|
nbsd_info_proc_mappings_header (int addr_bit)
|
|
{
|
|
printf_filtered (_("Mapped address spaces:\n\n"));
|
|
if (addr_bit == 64)
|
|
{
|
|
printf_filtered (" %18s %18s %10s %10s %9s %s\n",
|
|
"Start Addr",
|
|
" End Addr",
|
|
" Size", " Offset", "Flags ", "File");
|
|
}
|
|
else
|
|
{
|
|
printf_filtered ("\t%10s %10s %10s %10s %9s %s\n",
|
|
"Start Addr",
|
|
" End Addr",
|
|
" Size", " Offset", "Flags ", "File");
|
|
}
|
|
}
|
|
|
|
/* Helper function to generate mappings flags for a single VM map
|
|
entry in 'info proc mappings'. */
|
|
|
|
static const char *
|
|
nbsd_vm_map_entry_flags (int kve_flags, int kve_protection)
|
|
{
|
|
static char vm_flags[9];
|
|
|
|
vm_flags[0] = (kve_protection & KINFO_VME_PROT_READ) ? 'r' : '-';
|
|
vm_flags[1] = (kve_protection & KINFO_VME_PROT_WRITE) ? 'w' : '-';
|
|
vm_flags[2] = (kve_protection & KINFO_VME_PROT_EXEC) ? 'x' : '-';
|
|
vm_flags[3] = ' ';
|
|
vm_flags[4] = (kve_flags & KINFO_VME_FLAG_COW) ? 'C' : '-';
|
|
vm_flags[5] = (kve_flags & KINFO_VME_FLAG_NEEDS_COPY) ? 'N' : '-';
|
|
vm_flags[6] = (kve_flags & KINFO_VME_FLAG_PAGEABLE) ? 'P' : '-';
|
|
vm_flags[7] = (kve_flags & KINFO_VME_FLAG_GROWS_UP) ? 'U'
|
|
: (kve_flags & KINFO_VME_FLAG_GROWS_DOWN) ? 'D' : '-';
|
|
vm_flags[8] = '\0';
|
|
|
|
return vm_flags;
|
|
}
|
|
|
|
void
|
|
nbsd_info_proc_mappings_entry (int addr_bit, ULONGEST kve_start,
|
|
ULONGEST kve_end, ULONGEST kve_offset,
|
|
int kve_flags, int kve_protection,
|
|
const char *kve_path)
|
|
{
|
|
if (addr_bit == 64)
|
|
{
|
|
printf_filtered (" %18s %18s %10s %10s %9s %s\n",
|
|
hex_string (kve_start),
|
|
hex_string (kve_end),
|
|
hex_string (kve_end - kve_start),
|
|
hex_string (kve_offset),
|
|
nbsd_vm_map_entry_flags (kve_flags, kve_protection),
|
|
kve_path);
|
|
}
|
|
else
|
|
{
|
|
printf_filtered ("\t%10s %10s %10s %10s %9s %s\n",
|
|
hex_string (kve_start),
|
|
hex_string (kve_end),
|
|
hex_string (kve_end - kve_start),
|
|
hex_string (kve_offset),
|
|
nbsd_vm_map_entry_flags (kve_flags, kve_protection),
|
|
kve_path);
|
|
}
|
|
}
|
|
|
|
/* Implement the "get_syscall_number" gdbarch method. */
|
|
|
|
static LONGEST
|
|
nbsd_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread)
|
|
{
|
|
|
|
/* NetBSD doesn't use gdbarch_get_syscall_number since NetBSD
|
|
native targets fetch the system call number from the
|
|
'si_sysnum' member of siginfo_t in nbsd_nat_target::wait.
|
|
However, system call catching requires this function to be
|
|
set. */
|
|
|
|
internal_error (__FILE__, __LINE__, _("nbsd_get_sycall_number called"));
|
|
}
|
|
|
|
/* See nbsd-tdep.h. */
|
|
|
|
void
|
|
nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
set_gdbarch_gdb_signal_from_target (gdbarch, nbsd_gdb_signal_from_target);
|
|
set_gdbarch_gdb_signal_to_target (gdbarch, nbsd_gdb_signal_to_target);
|
|
set_gdbarch_skip_solib_resolver (gdbarch, nbsd_skip_solib_resolver);
|
|
set_gdbarch_auxv_parse (gdbarch, svr4_auxv_parse);
|
|
|
|
/* `catch syscall' */
|
|
set_xml_syscall_file_name (gdbarch, "syscalls/netbsd.xml");
|
|
set_gdbarch_get_syscall_number (gdbarch, nbsd_get_syscall_number);
|
|
}
|