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win32: enable bounds checker & exception handler

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exception handler borrowed from k1w1. Thanks.
This commit is contained in:
grischka
2009-12-19 22:22:43 +01:00
parent 8bbde91f62
commit 7fa712e00c
11 changed files with 471 additions and 381 deletions
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79
tccelf.c
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@ -1186,50 +1186,59 @@ static void add_init_array_defines(TCCState *s1, const char *section_name)
s->sh_num, sym_end);
}
static void tcc_add_bcheck(TCCState *s1)
{
#ifdef CONFIG_TCC_BCHECK
unsigned long *ptr;
Section *init_section;
unsigned char *pinit;
int sym_index;
if (0 == s1->do_bounds_check)
return;
/* XXX: add an object file to do that */
ptr = section_ptr_add(bounds_section, sizeof(unsigned long));
*ptr = 0;
add_elf_sym(symtab_section, 0, 0,
ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
bounds_section->sh_num, "__bounds_start");
/* add bound check code */
#ifndef TCC_TARGET_PE
{
char buf[1024];
snprintf(buf, sizeof(buf), "%s/%s", s1->tcc_lib_path, "bcheck.o");
tcc_add_file(s1, buf);
}
#endif
#ifdef TCC_TARGET_I386
if (s1->output_type != TCC_OUTPUT_MEMORY) {
/* add 'call __bound_init()' in .init section */
init_section = find_section(s1, ".init");
pinit = section_ptr_add(init_section, 5);
pinit[0] = 0xe8;
put32(pinit + 1, -4);
sym_index = find_elf_sym(symtab_section, "__bound_init");
put_elf_reloc(symtab_section, init_section,
init_section->data_offset - 4, R_386_PC32, sym_index);
}
#endif
#endif
}
/* add tcc runtime libraries */
static void tcc_add_runtime(TCCState *s1)
{
#if defined(CONFIG_TCC_BCHECK) || !defined(CONFIG_USE_LIBGCC)
char buf[1024];
#endif
tcc_add_bcheck(s1);
#ifdef CONFIG_TCC_BCHECK
if (s1->do_bounds_check) {
unsigned long *ptr;
Section *init_section;
unsigned char *pinit;
int sym_index;
/* XXX: add an object file to do that */
ptr = section_ptr_add(bounds_section, sizeof(unsigned long));
*ptr = 0;
add_elf_sym(symtab_section, 0, 0,
ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
bounds_section->sh_num, "__bounds_start");
/* add bound check code */
snprintf(buf, sizeof(buf), "%s/%s", s1->tcc_lib_path, "bcheck.o");
tcc_add_file(s1, buf);
#ifdef TCC_TARGET_I386
if (s1->output_type != TCC_OUTPUT_MEMORY) {
/* add 'call __bound_init()' in .init section */
init_section = find_section(s1, ".init");
pinit = section_ptr_add(init_section, 5);
pinit[0] = 0xe8;
put32(pinit + 1, -4);
sym_index = find_elf_sym(symtab_section, "__bound_init");
put_elf_reloc(symtab_section, init_section,
init_section->data_offset - 4, R_386_PC32, sym_index);
}
#endif
}
#endif
/* add libc */
if (!s1->nostdlib) {
tcc_add_library(s1, "c");
#ifdef CONFIG_USE_LIBGCC
tcc_add_library(s1, "c");
tcc_add_file(s1, CONFIG_SYSROOT "/lib/libgcc_s.so.1");
#else
char buf[1024];
tcc_add_library(s1, "c");
snprintf(buf, sizeof(buf), "%s/%s", s1->tcc_lib_path, "libtcc1.a");
tcc_add_file(s1, buf);
#endif