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4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/* This test program is part of GDB, the GNU debugger.
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Copyright 2011-2022 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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/* 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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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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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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i = 0; /* break before fork */
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fork ();
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i = 0; /* break after fork */
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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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return 0; /* break before return */
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}
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