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added runtime library - fixed more relocations

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This commit is contained in:
bellard
2002-07-22 23:37:39 +00:00
parent 3d902af1a9
commit 6cdecbe4e6
4 changed files with 678 additions and 132 deletions
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41
i386-gen.c
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@ -822,27 +822,33 @@ void gen_cvt_ftof(int t)
/* generate a bounded pointer addition */
void gen_bounded_ptr_add(void)
{
int addr;
Sym *sym;
/* prepare fast i386 function call (args in eax and edx) */
gv2(RC_EAX, RC_EDX);
/* save all temporary registers */
vtop -= 2;
save_regs(0);
/* do a fast function call */
addr = ind;
oad(0xe8, (int)__bound_ptr_add - ind - 5);
sym = external_sym(TOK___bound_ptr_add, func_old_type, 0);
greloc(cur_text_section, sym,
ind + 1 - (int)cur_text_section->data, R_386_PC32);
oad(0xe8, -4);
/* returned pointer is in eax */
vtop++;
vtop->r = REG_EAX | VT_BOUNDED;
vtop->c.ul = addr; /* address of bounding function call point */
/* address of bounding function call point */
vtop->c.ptr = (cur_text_section->reloc->data_ptr - sizeof(Elf32_Rel));
}
/* patch pointer addition in vtop so that pointer dereferencing is
also tested */
void gen_bounded_ptr_deref(void)
{
void *func;
int size, align, addr;
int func;
int size, align;
Elf32_Rel *rel;
Sym *sym;
size = 0;
/* XXX: put that code in generic part of tcc */
@ -855,20 +861,25 @@ void gen_bounded_ptr_deref(void)
if (!size)
size = type_size(vtop->t, &align);
switch(size) {
case 1: func = __bound_ptr_indir1; break;
case 2: func = __bound_ptr_indir2; break;
case 4: func = __bound_ptr_indir4; break;
case 8: func = __bound_ptr_indir8; break;
case 12: func = __bound_ptr_indir12; break;
case 16: func = __bound_ptr_indir16; break;
case 1: func = TOK___bound_ptr_indir1; break;
case 2: func = TOK___bound_ptr_indir2; break;
case 4: func = TOK___bound_ptr_indir4; break;
case 8: func = TOK___bound_ptr_indir8; break;
case 12: func = TOK___bound_ptr_indir12; break;
case 16: func = TOK___bound_ptr_indir16; break;
default:
error("unhandled size when derefencing bounded pointer");
func = NULL;
func = 0;
break;
}
addr = vtop->c.ul;
*(int *)(addr + 1) = (int)func - addr - 5;
/* patch relocation */
/* XXX: find a better solution ? */
rel = vtop->c.ptr;
sym = external_sym(func, func_old_type, 0);
if (!sym->c)
put_extern_sym(sym, NULL, 0);
rel->r_info = ELF32_R_INFO(sym->c, ELF32_R_TYPE(rel->r_info));
}
#endif