diff options
Diffstat (limited to 'gdb/testsuite/gdb.python/py-jit.c')
-rw-r--r-- | gdb/testsuite/gdb.python/py-jit.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.python/py-jit.c b/gdb/testsuite/gdb.python/py-jit.c new file mode 100644 index 0000000..1a52f82 --- /dev/null +++ b/gdb/testsuite/gdb.python/py-jit.c @@ -0,0 +1,56 @@ +/* Copyright (C) 2022-2022 Free Software Foundation, 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 <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <unistd.h> + +#include <sys/mman.h> + +/* "JIT-ed" function, with the prototype `long (long, long)`. */ +static const unsigned char jit_function_add_code[] = { + 0x48, 0x01, 0xfe, /* add %rdi,%rsi */ + 0x48, 0x89, 0xf0, /* mov %rsi,%rax */ + 0xc3, /* retq */ +}; + +void jit_register_code (char * name, uintptr_t code, size_t size) +{ + +} + +int +main (int argc, char **argv) +{ + void *code = mmap (NULL, getpagesize (), PROT_WRITE | PROT_EXEC, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + assert (code != MAP_FAILED); + + /* "Compile" jit_function_add. */ + memcpy (code, jit_function_add_code, + sizeof (jit_function_add_code)); + + jit_register_code("jit_function_add", (uintptr_t)code, sizeof (jit_function_add_code)); + + assert (((long (*)(long, long))code)(1,5) == 6); /* breakpoint 1 line */ + + + return 0; +} |