mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2025-07-17 14:27:11 +02:00
Added the TCC compiler to the external folder and the associated projects.
This commit is contained in:
Sandu Liviu Catalin
772
external/TCC/tccrun.c
vendored
Normal file
772
external/TCC/tccrun.c
vendored
Normal file
@ -0,0 +1,772 @@
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/*
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* TCC - Tiny C Compiler - Support for -run switch
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*
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* Copyright (c) 2001-2004 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "tcc.h"
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/* only native compiler supports -run */
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#ifdef TCC_IS_NATIVE
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#ifdef CONFIG_TCC_BACKTRACE
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ST_DATA int rt_num_callers = 6;
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ST_DATA const char **rt_bound_error_msg;
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ST_DATA void *rt_prog_main;
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#endif
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#ifdef _WIN32
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#define ucontext_t CONTEXT
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#endif
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static void set_pages_executable(void *ptr, unsigned long length);
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static void set_exception_handler(void);
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static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level);
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static void rt_error(ucontext_t *uc, const char *fmt, ...);
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static int tcc_relocate_ex(TCCState *s1, void *ptr);
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#ifdef _WIN64
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static void win64_add_function_table(TCCState *s1);
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#endif
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/* ------------------------------------------------------------- */
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/* Do all relocations (needed before using tcc_get_symbol())
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Returns -1 on error. */
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LIBTCCAPI int tcc_relocate(TCCState *s1, void *ptr)
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{
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int ret;
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if (TCC_RELOCATE_AUTO != ptr)
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return tcc_relocate_ex(s1, ptr);
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ret = tcc_relocate_ex(s1, NULL);
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if (ret < 0)
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return ret;
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#ifdef HAVE_SELINUX
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{ /* Use mmap instead of malloc for Selinux. Ref:
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http://www.gnu.org/s/libc/manual/html_node/File-Size.html */
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char tmpfname[] = "/tmp/.tccrunXXXXXX";
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int fd = mkstemp (tmpfname);
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s1->mem_size = ret;
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unlink (tmpfname);
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ftruncate (fd, s1->mem_size);
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s1->write_mem = mmap (NULL, ret, PROT_READ|PROT_WRITE,
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MAP_SHARED, fd, 0);
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if (s1->write_mem == MAP_FAILED)
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tcc_error("/tmp not writeable");
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s1->runtime_mem = mmap (NULL, ret, PROT_READ|PROT_EXEC,
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MAP_SHARED, fd, 0);
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if (s1->runtime_mem == MAP_FAILED)
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tcc_error("/tmp not executable");
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ret = tcc_relocate_ex(s1, s1->write_mem);
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}
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#else
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s1->runtime_mem = tcc_malloc(ret);
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ret = tcc_relocate_ex(s1, s1->runtime_mem);
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#endif
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return ret;
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}
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/* launch the compiled program with the given arguments */
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LIBTCCAPI int tcc_run(TCCState *s1, int argc, char **argv)
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{
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int (*prog_main)(int, char **);
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int ret;
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if (tcc_relocate(s1, TCC_RELOCATE_AUTO) < 0)
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return -1;
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prog_main = tcc_get_symbol_err(s1, s1->runtime_main);
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#ifdef CONFIG_TCC_BACKTRACE
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if (s1->do_debug) {
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set_exception_handler();
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rt_prog_main = prog_main;
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}
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#endif
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#ifdef CONFIG_TCC_BCHECK
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if (s1->do_bounds_check) {
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void (*bound_init)(void);
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void (*bound_exit)(void);
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void (*bound_new_region)(void *p, addr_t size);
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int (*bound_delete_region)(void *p);
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int i;
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/* set error function */
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rt_bound_error_msg = tcc_get_symbol_err(s1, "__bound_error_msg");
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/* XXX: use .init section so that it also work in binary ? */
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bound_init = tcc_get_symbol_err(s1, "__bound_init");
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bound_exit = tcc_get_symbol_err(s1, "__bound_exit");
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bound_new_region = tcc_get_symbol_err(s1, "__bound_new_region");
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bound_delete_region = tcc_get_symbol_err(s1, "__bound_delete_region");
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bound_init();
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/* mark argv area as valid */
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bound_new_region(argv, argc*sizeof(argv[0]));
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for (i=0; i<argc; ++i)
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bound_new_region(argv[i], strlen(argv[i]));
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errno = 0; /* clean errno value */
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ret = (*prog_main)(argc, argv);
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/* unmark argv area */
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for (i=0; i<argc; ++i)
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bound_delete_region(argv[i]);
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bound_delete_region(argv);
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bound_exit();
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} else
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#endif
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{
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errno = 0; /* clean errno value */
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ret = (*prog_main)(argc, argv);
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}
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return ret;
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}
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/* relocate code. Return -1 on error, required size if ptr is NULL,
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otherwise copy code into buffer passed by the caller */
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static int tcc_relocate_ex(TCCState *s1, void *ptr)
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{
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Section *s;
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unsigned long offset, length;
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addr_t mem;
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int i;
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if (NULL == ptr) {
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s1->nb_errors = 0;
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#ifdef TCC_TARGET_PE
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pe_output_file(s1, NULL);
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#else
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tcc_add_runtime(s1);
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relocate_common_syms();
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tcc_add_linker_symbols(s1);
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build_got_entries(s1);
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#endif
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if (s1->nb_errors)
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return -1;
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}
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offset = 0, mem = (addr_t)ptr;
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for(i = 1; i < s1->nb_sections; i++) {
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s = s1->sections[i];
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if (0 == (s->sh_flags & SHF_ALLOC))
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continue;
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length = s->data_offset;
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s->sh_addr = mem ? (mem + offset + 15) & ~15 : 0;
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offset = (offset + length + 15) & ~15;
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}
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offset += 16;
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/* relocate symbols */
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relocate_syms(s1, 1);
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if (s1->nb_errors)
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return -1;
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if (0 == mem)
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return offset;
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/* relocate each section */
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for(i = 1; i < s1->nb_sections; i++) {
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s = s1->sections[i];
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if (s->reloc)
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relocate_section(s1, s);
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}
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relocate_plt(s1);
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for(i = 1; i < s1->nb_sections; i++) {
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s = s1->sections[i];
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if (0 == (s->sh_flags & SHF_ALLOC))
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continue;
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length = s->data_offset;
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// printf("%-12s %08lx %04x\n", s->name, s->sh_addr, length);
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ptr = (void*)s->sh_addr;
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if (NULL == s->data || s->sh_type == SHT_NOBITS)
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memset(ptr, 0, length);
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else
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memcpy(ptr, s->data, length);
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/* mark executable sections as executable in memory */
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if (s->sh_flags & SHF_EXECINSTR)
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set_pages_executable(ptr, length);
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}
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#ifdef _WIN64
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win64_add_function_table(s1);
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#endif
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return 0;
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}
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/* ------------------------------------------------------------- */
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/* allow to run code in memory */
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static void set_pages_executable(void *ptr, unsigned long length)
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{
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#ifdef _WIN32
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unsigned long old_protect;
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VirtualProtect(ptr, length, PAGE_EXECUTE_READWRITE, &old_protect);
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#else
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extern void __clear_cache(void *beginning, void *end);
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#ifndef PAGESIZE
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# define PAGESIZE 4096
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#endif
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addr_t start, end;
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start = (addr_t)ptr & ~(PAGESIZE - 1);
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end = (addr_t)ptr + length;
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end = (end + PAGESIZE - 1) & ~(PAGESIZE - 1);
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mprotect((void *)start, end - start, PROT_READ | PROT_WRITE | PROT_EXEC);
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__clear_cache(ptr, (char *)ptr + length);
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#endif
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}
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/* ------------------------------------------------------------- */
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#ifdef CONFIG_TCC_BACKTRACE
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ST_FUNC void tcc_set_num_callers(int n)
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{
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rt_num_callers = n;
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}
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/* print the position in the source file of PC value 'pc' by reading
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the stabs debug information */
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static addr_t rt_printline(addr_t wanted_pc, const char *msg)
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{
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char func_name[128], last_func_name[128];
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addr_t func_addr, last_pc, pc;
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const char *incl_files[INCLUDE_STACK_SIZE];
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int incl_index, len, last_line_num, i;
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const char *str, *p;
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Stab_Sym *stab_sym = NULL, *stab_sym_end, *sym;
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int stab_len = 0;
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char *stab_str = NULL;
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||||
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if (stab_section) {
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stab_len = stab_section->data_offset;
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stab_sym = (Stab_Sym *)stab_section->data;
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stab_str = (char *) stabstr_section->data;
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}
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func_name[0] = '\0';
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func_addr = 0;
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incl_index = 0;
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last_func_name[0] = '\0';
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last_pc = (addr_t)-1;
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last_line_num = 1;
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if (!stab_sym)
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goto no_stabs;
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||||
stab_sym_end = (Stab_Sym*)((char*)stab_sym + stab_len);
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||||
for (sym = stab_sym + 1; sym < stab_sym_end; ++sym) {
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||||
switch(sym->n_type) {
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||||
/* function start or end */
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||||
case N_FUN:
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||||
if (sym->n_strx == 0) {
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||||
/* we test if between last line and end of function */
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pc = sym->n_value + func_addr;
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||||
if (wanted_pc >= last_pc && wanted_pc < pc)
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||||
goto found;
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||||
func_name[0] = '\0';
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||||
func_addr = 0;
|
||||
} else {
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||||
str = stab_str + sym->n_strx;
|
||||
p = strchr(str, ':');
|
||||
if (!p) {
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||||
pstrcpy(func_name, sizeof(func_name), str);
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||||
} else {
|
||||
len = p - str;
|
||||
if (len > sizeof(func_name) - 1)
|
||||
len = sizeof(func_name) - 1;
|
||||
memcpy(func_name, str, len);
|
||||
func_name[len] = '\0';
|
||||
}
|
||||
func_addr = sym->n_value;
|
||||
}
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||||
break;
|
||||
/* line number info */
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||||
case N_SLINE:
|
||||
pc = sym->n_value + func_addr;
|
||||
if (wanted_pc >= last_pc && wanted_pc < pc)
|
||||
goto found;
|
||||
last_pc = pc;
|
||||
last_line_num = sym->n_desc;
|
||||
/* XXX: slow! */
|
||||
strcpy(last_func_name, func_name);
|
||||
break;
|
||||
/* include files */
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||||
case N_BINCL:
|
||||
str = stab_str + sym->n_strx;
|
||||
add_incl:
|
||||
if (incl_index < INCLUDE_STACK_SIZE) {
|
||||
incl_files[incl_index++] = str;
|
||||
}
|
||||
break;
|
||||
case N_EINCL:
|
||||
if (incl_index > 1)
|
||||
incl_index--;
|
||||
break;
|
||||
case N_SO:
|
||||
if (sym->n_strx == 0) {
|
||||
incl_index = 0; /* end of translation unit */
|
||||
} else {
|
||||
str = stab_str + sym->n_strx;
|
||||
/* do not add path */
|
||||
len = strlen(str);
|
||||
if (len > 0 && str[len - 1] != '/')
|
||||
goto add_incl;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
no_stabs:
|
||||
/* second pass: we try symtab symbols (no line number info) */
|
||||
incl_index = 0;
|
||||
if (symtab_section)
|
||||
{
|
||||
ElfW(Sym) *sym, *sym_end;
|
||||
int type;
|
||||
|
||||
sym_end = (ElfW(Sym) *)(symtab_section->data + symtab_section->data_offset);
|
||||
for(sym = (ElfW(Sym) *)symtab_section->data + 1;
|
||||
sym < sym_end;
|
||||
sym++) {
|
||||
type = ELFW(ST_TYPE)(sym->st_info);
|
||||
if (type == STT_FUNC || type == STT_GNU_IFUNC) {
|
||||
if (wanted_pc >= sym->st_value &&
|
||||
wanted_pc < sym->st_value + sym->st_size) {
|
||||
pstrcpy(last_func_name, sizeof(last_func_name),
|
||||
(char *) strtab_section->data + sym->st_name);
|
||||
func_addr = sym->st_value;
|
||||
goto found;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/* did not find any info: */
|
||||
fprintf(stderr, "%s %p ???\n", msg, (void*)wanted_pc);
|
||||
fflush(stderr);
|
||||
return 0;
|
||||
found:
|
||||
i = incl_index;
|
||||
if (i > 0)
|
||||
fprintf(stderr, "%s:%d: ", incl_files[--i], last_line_num);
|
||||
fprintf(stderr, "%s %p", msg, (void*)wanted_pc);
|
||||
if (last_func_name[0] != '\0')
|
||||
fprintf(stderr, " %s()", last_func_name);
|
||||
if (--i >= 0) {
|
||||
fprintf(stderr, " (included from ");
|
||||
for (;;) {
|
||||
fprintf(stderr, "%s", incl_files[i]);
|
||||
if (--i < 0)
|
||||
break;
|
||||
fprintf(stderr, ", ");
|
||||
}
|
||||
fprintf(stderr, ")");
|
||||
}
|
||||
fprintf(stderr, "\n");
|
||||
fflush(stderr);
|
||||
return func_addr;
|
||||
}
|
||||
|
||||
/* emit a run time error at position 'pc' */
|
||||
static void rt_error(ucontext_t *uc, const char *fmt, ...)
|
||||
{
|
||||
va_list ap;
|
||||
addr_t pc;
|
||||
int i;
|
||||
|
||||
fprintf(stderr, "Runtime error: ");
|
||||
va_start(ap, fmt);
|
||||
vfprintf(stderr, fmt, ap);
|
||||
va_end(ap);
|
||||
fprintf(stderr, "\n");
|
||||
|
||||
for(i=0;i<rt_num_callers;i++) {
|
||||
if (rt_get_caller_pc(&pc, uc, i) < 0)
|
||||
break;
|
||||
pc = rt_printline(pc, i ? "by" : "at");
|
||||
if (pc == (addr_t)rt_prog_main && pc)
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#ifndef _WIN32
|
||||
|
||||
/* signal handler for fatal errors */
|
||||
static void sig_error(int signum, siginfo_t *siginf, void *puc)
|
||||
{
|
||||
ucontext_t *uc = puc;
|
||||
|
||||
switch(signum) {
|
||||
case SIGFPE:
|
||||
switch(siginf->si_code) {
|
||||
case FPE_INTDIV:
|
||||
case FPE_FLTDIV:
|
||||
rt_error(uc, "division by zero");
|
||||
break;
|
||||
default:
|
||||
rt_error(uc, "floating point exception");
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case SIGBUS:
|
||||
case SIGSEGV:
|
||||
if (rt_bound_error_msg && *rt_bound_error_msg)
|
||||
rt_error(uc, *rt_bound_error_msg);
|
||||
else
|
||||
rt_error(uc, "dereferencing invalid pointer");
|
||||
break;
|
||||
case SIGILL:
|
||||
rt_error(uc, "illegal instruction");
|
||||
break;
|
||||
case SIGABRT:
|
||||
rt_error(uc, "abort() called");
|
||||
break;
|
||||
default:
|
||||
rt_error(uc, "caught signal %d", signum);
|
||||
break;
|
||||
}
|
||||
exit(255);
|
||||
}
|
||||
|
||||
#ifndef SA_SIGINFO
|
||||
# define SA_SIGINFO 0x00000004u
|
||||
#endif
|
||||
|
||||
/* Generate a stack backtrace when a CPU exception occurs. */
|
||||
static void set_exception_handler(void)
|
||||
{
|
||||
struct sigaction sigact;
|
||||
/* install TCC signal handlers to print debug info on fatal
|
||||
runtime errors */
|
||||
sigact.sa_flags = SA_SIGINFO | SA_RESETHAND;
|
||||
sigact.sa_sigaction = sig_error;
|
||||
sigemptyset(&sigact.sa_mask);
|
||||
sigaction(SIGFPE, &sigact, NULL);
|
||||
sigaction(SIGILL, &sigact, NULL);
|
||||
sigaction(SIGSEGV, &sigact, NULL);
|
||||
sigaction(SIGBUS, &sigact, NULL);
|
||||
sigaction(SIGABRT, &sigact, NULL);
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#ifdef __i386__
|
||||
|
||||
/* fix for glibc 2.1 */
|
||||
#ifndef REG_EIP
|
||||
#define REG_EIP EIP
|
||||
#define REG_EBP EBP
|
||||
#endif
|
||||
|
||||
/* return the PC at frame level 'level'. Return negative if not found */
|
||||
static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
|
||||
{
|
||||
addr_t fp;
|
||||
int i;
|
||||
|
||||
if (level == 0) {
|
||||
#if defined(__APPLE__)
|
||||
*paddr = uc->uc_mcontext->__ss.__eip;
|
||||
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
|
||||
*paddr = uc->uc_mcontext.mc_eip;
|
||||
#elif defined(__dietlibc__)
|
||||
*paddr = uc->uc_mcontext.eip;
|
||||
#elif defined(__NetBSD__)
|
||||
*paddr = uc->uc_mcontext.__gregs[_REG_EIP];
|
||||
#else
|
||||
*paddr = uc->uc_mcontext.gregs[REG_EIP];
|
||||
#endif
|
||||
return 0;
|
||||
} else {
|
||||
#if defined(__APPLE__)
|
||||
fp = uc->uc_mcontext->__ss.__ebp;
|
||||
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
|
||||
fp = uc->uc_mcontext.mc_ebp;
|
||||
#elif defined(__dietlibc__)
|
||||
fp = uc->uc_mcontext.ebp;
|
||||
#elif defined(__NetBSD__)
|
||||
fp = uc->uc_mcontext.__gregs[_REG_EBP];
|
||||
#else
|
||||
fp = uc->uc_mcontext.gregs[REG_EBP];
|
||||
#endif
|
||||
for(i=1;i<level;i++) {
|
||||
/* XXX: check address validity with program info */
|
||||
if (fp <= 0x1000 || fp >= 0xc0000000)
|
||||
return -1;
|
||||
fp = ((addr_t *)fp)[0];
|
||||
}
|
||||
*paddr = ((addr_t *)fp)[1];
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#elif defined(__x86_64__)
|
||||
|
||||
/* return the PC at frame level 'level'. Return negative if not found */
|
||||
static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
|
||||
{
|
||||
addr_t fp;
|
||||
int i;
|
||||
|
||||
if (level == 0) {
|
||||
/* XXX: only support linux */
|
||||
#if defined(__APPLE__)
|
||||
*paddr = uc->uc_mcontext->__ss.__rip;
|
||||
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
|
||||
*paddr = uc->uc_mcontext.mc_rip;
|
||||
#elif defined(__NetBSD__)
|
||||
*paddr = uc->uc_mcontext.__gregs[_REG_RIP];
|
||||
#else
|
||||
*paddr = uc->uc_mcontext.gregs[REG_RIP];
|
||||
#endif
|
||||
return 0;
|
||||
} else {
|
||||
#if defined(__APPLE__)
|
||||
fp = uc->uc_mcontext->__ss.__rbp;
|
||||
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
|
||||
fp = uc->uc_mcontext.mc_rbp;
|
||||
#elif defined(__NetBSD__)
|
||||
fp = uc->uc_mcontext.__gregs[_REG_RBP];
|
||||
#else
|
||||
fp = uc->uc_mcontext.gregs[REG_RBP];
|
||||
#endif
|
||||
for(i=1;i<level;i++) {
|
||||
/* XXX: check address validity with program info */
|
||||
if (fp <= 0x1000)
|
||||
return -1;
|
||||
fp = ((addr_t *)fp)[0];
|
||||
}
|
||||
*paddr = ((addr_t *)fp)[1];
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#elif defined(__arm__)
|
||||
|
||||
/* return the PC at frame level 'level'. Return negative if not found */
|
||||
static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
|
||||
{
|
||||
addr_t fp, sp;
|
||||
int i;
|
||||
|
||||
if (level == 0) {
|
||||
/* XXX: only supports linux */
|
||||
#if defined(__linux__)
|
||||
*paddr = uc->uc_mcontext.arm_pc;
|
||||
#else
|
||||
return -1;
|
||||
#endif
|
||||
return 0;
|
||||
} else {
|
||||
#if defined(__linux__)
|
||||
fp = uc->uc_mcontext.arm_fp;
|
||||
sp = uc->uc_mcontext.arm_sp;
|
||||
if (sp < 0x1000)
|
||||
sp = 0x1000;
|
||||
#else
|
||||
return -1;
|
||||
#endif
|
||||
/* XXX: specific to tinycc stack frames */
|
||||
if (fp < sp + 12 || fp & 3)
|
||||
return -1;
|
||||
for(i = 1; i < level; i++) {
|
||||
sp = ((addr_t *)fp)[-2];
|
||||
if (sp < fp || sp - fp > 16 || sp & 3)
|
||||
return -1;
|
||||
fp = ((addr_t *)fp)[-3];
|
||||
if (fp <= sp || fp - sp < 12 || fp & 3)
|
||||
return -1;
|
||||
}
|
||||
/* XXX: check address validity with program info */
|
||||
*paddr = ((addr_t *)fp)[-1];
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#elif defined(__aarch64__)
|
||||
|
||||
static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
|
||||
{
|
||||
if (level < 0)
|
||||
return -1;
|
||||
else if (level == 0) {
|
||||
*paddr = uc->uc_mcontext.pc;
|
||||
return 0;
|
||||
}
|
||||
else {
|
||||
addr_t *fp = (addr_t *)uc->uc_mcontext.regs[29];
|
||||
int i;
|
||||
for (i = 1; i < level; i++)
|
||||
fp = (addr_t *)fp[0];
|
||||
*paddr = fp[1];
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#else
|
||||
|
||||
#warning add arch specific rt_get_caller_pc()
|
||||
static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
#endif /* !__i386__ */
|
||||
|
||||
/* ------------------------------------------------------------- */
|
||||
#else /* WIN32 */
|
||||
|
||||
static long __stdcall cpu_exception_handler(EXCEPTION_POINTERS *ex_info)
|
||||
{
|
||||
EXCEPTION_RECORD *er = ex_info->ExceptionRecord;
|
||||
CONTEXT *uc = ex_info->ContextRecord;
|
||||
switch (er->ExceptionCode) {
|
||||
case EXCEPTION_ACCESS_VIOLATION:
|
||||
if (rt_bound_error_msg && *rt_bound_error_msg)
|
||||
rt_error(uc, *rt_bound_error_msg);
|
||||
else
|
||||
rt_error(uc, "access violation");
|
||||
break;
|
||||
case EXCEPTION_STACK_OVERFLOW:
|
||||
rt_error(uc, "stack overflow");
|
||||
break;
|
||||
case EXCEPTION_INT_DIVIDE_BY_ZERO:
|
||||
rt_error(uc, "division by zero");
|
||||
break;
|
||||
default:
|
||||
rt_error(uc, "exception caught");
|
||||
break;
|
||||
}
|
||||
return EXCEPTION_EXECUTE_HANDLER;
|
||||
}
|
||||
|
||||
/* Generate a stack backtrace when a CPU exception occurs. */
|
||||
static void set_exception_handler(void)
|
||||
{
|
||||
SetUnhandledExceptionFilter(cpu_exception_handler);
|
||||
}
|
||||
|
||||
#ifdef _WIN64
|
||||
static void win64_add_function_table(TCCState *s1)
|
||||
{
|
||||
RtlAddFunctionTable(
|
||||
(RUNTIME_FUNCTION*)s1->uw_pdata->sh_addr,
|
||||
s1->uw_pdata->data_offset / sizeof (RUNTIME_FUNCTION),
|
||||
text_section->sh_addr
|
||||
);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* return the PC at frame level 'level'. Return non zero if not found */
|
||||
static int rt_get_caller_pc(addr_t *paddr, CONTEXT *uc, int level)
|
||||
{
|
||||
addr_t fp, pc;
|
||||
int i;
|
||||
#ifdef _WIN64
|
||||
pc = uc->Rip;
|
||||
fp = uc->Rbp;
|
||||
#else
|
||||
pc = uc->Eip;
|
||||
fp = uc->Ebp;
|
||||
#endif
|
||||
if (level > 0) {
|
||||
for(i=1;i<level;i++) {
|
||||
/* XXX: check address validity with program info */
|
||||
if (fp <= 0x1000 || fp >= 0xc0000000)
|
||||
return -1;
|
||||
fp = ((addr_t*)fp)[0];
|
||||
}
|
||||
pc = ((addr_t*)fp)[1];
|
||||
}
|
||||
*paddr = pc;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* _WIN32 */
|
||||
#endif /* CONFIG_TCC_BACKTRACE */
|
||||
/* ------------------------------------------------------------- */
|
||||
#ifdef CONFIG_TCC_STATIC
|
||||
|
||||
/* dummy function for profiling */
|
||||
ST_FUNC void *dlopen(const char *filename, int flag)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
ST_FUNC void dlclose(void *p)
|
||||
{
|
||||
}
|
||||
|
||||
ST_FUNC const char *dlerror(void)
|
||||
{
|
||||
return "error";
|
||||
}
|
||||
|
||||
typedef struct TCCSyms {
|
||||
char *str;
|
||||
void *ptr;
|
||||
} TCCSyms;
|
||||
|
||||
|
||||
/* add the symbol you want here if no dynamic linking is done */
|
||||
static TCCSyms tcc_syms[] = {
|
||||
#if !defined(CONFIG_TCCBOOT)
|
||||
#define TCCSYM(a) { #a, &a, },
|
||||
TCCSYM(printf)
|
||||
TCCSYM(fprintf)
|
||||
TCCSYM(fopen)
|
||||
TCCSYM(fclose)
|
||||
#undef TCCSYM
|
||||
#endif
|
||||
{ NULL, NULL },
|
||||
};
|
||||
|
||||
ST_FUNC void *resolve_sym(TCCState *s1, const char *symbol)
|
||||
{
|
||||
TCCSyms *p;
|
||||
p = tcc_syms;
|
||||
while (p->str != NULL) {
|
||||
if (!strcmp(p->str, symbol))
|
||||
return p->ptr;
|
||||
p++;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#elif !defined(_WIN32)
|
||||
|
||||
ST_FUNC void *resolve_sym(TCCState *s1, const char *sym)
|
||||
{
|
||||
return dlsym(RTLD_DEFAULT, sym);
|
||||
}
|
||||
|
||||
#endif /* CONFIG_TCC_STATIC */
|
||||
#endif /* TCC_IS_NATIVE */
|
||||
/* ------------------------------------------------------------- */
|
||||
Reference in New Issue
Block a user