+++ /dev/null
-/* 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"
-
-/* 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_gdbarch_get_syscall_number (gdbarch, nbsd_get_syscall_number);
-}
projects / thirdparty / binutils-gdb.git / blobdiff