forked from Imagelibrary/binutils-gdb
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.
145 lines
3.7 KiB
C
145 lines
3.7 KiB
C
/* This test program is part of GDB, the GNU debugger.
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Copyright 2011-2024 Free Software Foundation, Inc.
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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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/* Simulate loading of JIT code. */
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#include <elf.h>
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#include <link.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "jit-protocol.h"
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#include "jit-elf-util.h"
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static void
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usage (void)
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{
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fprintf (stderr, "Usage: jit-elf-main libraries...\n");
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exit (1);
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}
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/* Defined by the .exp file if testing attach. */
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#ifndef ATTACH
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#define ATTACH 0
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#endif
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#ifndef MAIN
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#define MAIN main
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#endif
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/* Must be defined by .exp file when compiling to know
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what address to map the ELF binary to. */
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#ifndef LOAD_ADDRESS
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#error "Must define LOAD_ADDRESS"
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#endif
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#ifndef LOAD_INCREMENT
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#error "Must define LOAD_INCREMENT"
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#endif
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/* Used to spin waiting for GDB. */
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volatile int wait_for_gdb = ATTACH;
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#define WAIT_FOR_GDB do {} while (wait_for_gdb)
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/* The current process's PID. GDB retrieves this. */
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int mypid;
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int
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MAIN (int argc, char *argv[])
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{
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int i;
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alarm (300);
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/* Used as backing storage for GDB to populate argv. */
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char *fake_argv[10];
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mypid = getpid ();
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/* gdb break here 0 */
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if (argc < 2)
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{
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usage ();
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exit (1);
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}
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for (i = 1; i < argc; ++i)
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{
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size_t obj_size;
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void *load_addr = (void *) (size_t) (LOAD_ADDRESS + (i - 1) * LOAD_INCREMENT);
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printf ("Loading %s as JIT at %p\n", argv[i], load_addr);
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void *addr = load_elf (argv[i], &obj_size, load_addr);
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char name[32];
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sprintf (name, "jit_function_%04d", i);
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int (*jit_function) (void) = (int (*) (void)) load_symbol (addr, name);
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/* Link entry at the end of the list. */
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struct jit_code_entry *const entry = calloc (1, sizeof (*entry));
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entry->symfile_addr = (const char *)addr;
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entry->symfile_size = obj_size;
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entry->prev_entry = __jit_debug_descriptor.relevant_entry;
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__jit_debug_descriptor.relevant_entry = entry;
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if (entry->prev_entry != NULL)
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entry->prev_entry->next_entry = entry;
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else
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__jit_debug_descriptor.first_entry = entry;
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/* Notify GDB. */
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__jit_debug_descriptor.action_flag = JIT_REGISTER;
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__jit_debug_register_code ();
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if (jit_function () != 42)
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{
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fprintf (stderr, "unexpected return value\n");
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exit (1);
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}
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}
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WAIT_FOR_GDB; i = 0; /* gdb break here 1 */
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/* Now unregister them all in reverse order. */
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while (__jit_debug_descriptor.relevant_entry != NULL)
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{
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struct jit_code_entry *const entry =
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__jit_debug_descriptor.relevant_entry;
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struct jit_code_entry *const prev_entry = entry->prev_entry;
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if (prev_entry != NULL)
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{
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prev_entry->next_entry = NULL;
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entry->prev_entry = NULL;
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}
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else
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__jit_debug_descriptor.first_entry = NULL;
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/* Notify GDB. */
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__jit_debug_descriptor.action_flag = JIT_UNREGISTER;
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__jit_debug_register_code ();
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__jit_debug_descriptor.relevant_entry = prev_entry;
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free (entry);
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}
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WAIT_FOR_GDB; return 0; /* gdb break here 2 */
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}
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