mirror of
https://sourceware.org/git/binutils-gdb.git
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1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
118 lines
4.0 KiB
C
118 lines
4.0 KiB
C
/* Target-dependent code for Solaris.
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Copyright (C) 2006-2024 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 "defs.h"
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#include "frame.h"
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#include "symtab.h"
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#include "inferior.h"
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#include "objfiles.h"
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#include "sol2-tdep.h"
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/* The Solaris signal trampolines reside in libc. For normal signals,
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the function `sigacthandler' is used. This signal trampoline will
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call the signal handler using the System V calling convention,
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where the third argument is a pointer to an instance of
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`ucontext_t', which has a member `uc_mcontext' that contains the
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saved registers. Incidentally, the kernel passes the `ucontext_t'
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pointer as the third argument of the signal trampoline too, and
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`sigacthandler' simply passes it on. However, if you link your
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program with "-L/usr/ucblib -R/usr/ucblib -lucb", the function
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`ucbsigvechandler' will be used, which invokes the using the BSD
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convention, where the third argument is a pointer to an instance of
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`struct sigcontext'. It is the `ucbsigvechandler' function that
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converts the `ucontext_t' to a `sigcontext', and back. Unless the
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signal handler modifies the `struct sigcontext' we can safely
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ignore this. */
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static int
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sol2_pc_in_sigtramp (CORE_ADDR pc, const char *name)
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{
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return (name && (strcmp (name, "sigacthandler") == 0
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|| strcmp (name, "ucbsigvechandler") == 0
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|| strcmp (name, "__sighndlr") == 0));
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}
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/* Return whether THIS_FRAME corresponds to a Solaris sigtramp routine. */
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int
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sol2_sigtramp_p (frame_info_ptr this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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const char *name;
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find_pc_partial_function (pc, &name, NULL, NULL);
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return sol2_pc_in_sigtramp (pc, name);
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}
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static CORE_ADDR
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sol2_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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struct bound_minimal_symbol msym;
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msym = lookup_minimal_symbol("elf_bndr", NULL, NULL);
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if (msym.minsym && msym.value_address () == pc)
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return frame_unwind_caller_pc (get_current_frame ());
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return 0;
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}
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/* This is how we want PTIDs from Solaris core files to be printed. */
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static std::string
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sol2_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
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{
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struct inferior *inf;
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int pid;
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/* Check whether we're printing an LWP (gdb thread) or a process. */
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pid = ptid.lwp ();
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if (pid != 0)
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{
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/* A thread. */
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return string_printf ("LWP %ld", ptid.lwp ());
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}
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/* GDB didn't use to put a NT_PSTATUS note in Solaris cores. If
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that's missing, then we're dealing with a fake PID corelow.c made up. */
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inf = find_inferior_ptid (current_inferior ()->process_target (), ptid);
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if (inf == NULL || inf->fake_pid_p)
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return "<core>";
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/* Not fake; print as usual. */
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return normal_pid_to_str (ptid);
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}
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/* To be called from GDB_OSABI_SOLARIS handlers. */
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void
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sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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/* The Sun compilers (Sun ONE Studio, Forte Developer, Sun WorkShop, SunPRO)
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compiler puts out 0 instead of the address in N_SO stabs. Starting with
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SunPRO 3.0, the compiler does this for N_FUN stabs too. */
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set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
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/* Solaris uses SVR4-style shared libraries. */
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set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
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/* How to print LWP PTIDs from core files. */
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set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
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}
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