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tccgen.c: move 'alloca_used' complication to *-gen files
related to commit 8370bc03a1
This commit is contained in:
grischka
parent
8de7c092f0
commit
5bc1720776
13
i386-gen.c
13
i386-gen.c
@ -97,6 +97,7 @@ static int func_ret_sub;
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#ifdef CONFIG_TCC_BCHECK
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static addr_t func_bound_offset;
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static unsigned long func_bound_ind;
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static int func_bound_alloca_used;
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static void gen_bounds_prolog(void);
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static void gen_bounds_epilog(void);
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#endif
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@ -357,6 +358,10 @@ static void gcall_or_jmp(int is_jmp)
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/* constant and relocation case */
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greloc(cur_text_section, vtop->sym, ind + 1, R_386_PC32);
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oad(0xe8 + is_jmp, vtop->c.i - 4); /* call/jmp im */
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#ifdef CONFIG_TCC_BCHECK
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if (tcc_state->do_bounds_check && vtop->sym->v == TOK_alloca)
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func_bound_alloca_used = 1;
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#endif
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} else {
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/* otherwise, indirect call */
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r = gv(RC_INT);
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@ -588,9 +593,7 @@ ST_FUNC void gfunc_epilog(void)
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addr_t v, saved_ind;
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#ifdef CONFIG_TCC_BCHECK
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if (tcc_state->do_bounds_check &&
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(func_bound_offset != lbounds_section->data_offset ||
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tcc_state->alloca_vla_used))
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if (tcc_state->do_bounds_check)
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gen_bounds_epilog();
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#endif
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@ -1068,6 +1071,7 @@ static void gen_bounds_prolog(void)
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/* leave some room for bound checking code */
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func_bound_offset = lbounds_section->data_offset;
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func_bound_ind = ind;
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func_bound_alloca_used = 0;
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oad(0xb8, 0); /* lbound section pointer */
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oad(0xb8, 0); /* call to function */
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}
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@ -1078,6 +1082,9 @@ static void gen_bounds_epilog(void)
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addr_t *bounds_ptr;
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Sym *sym_data;
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if (func_bound_offset == lbounds_section->data_offset && !func_bound_alloca_used)
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return;
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/* add end of table info */
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bounds_ptr = section_ptr_add(lbounds_section, sizeof(addr_t));
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*bounds_ptr = 0;
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1
tcc.h
1
tcc.h
@ -838,7 +838,6 @@ struct TCCState {
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/* bound check related sections */
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Section *bounds_section; /* contains global data bound description */
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Section *lbounds_section; /* contains local data bound description */
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int alloca_vla_used;
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#endif
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/* symbol sections */
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Section *symtab_section;
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11
tccgen.c
11
tccgen.c
@ -5914,11 +5914,6 @@ special_math_val:
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Sym *sa;
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int nb_args, ret_nregs, ret_align, regsize, variadic;
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#ifdef CONFIG_TCC_BCHECK
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tcc_state->alloca_vla_used |= tcc_state->do_bounds_check &&
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(vtop->r & VT_SYM) &&
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vtop->sym->v == TOK_alloca;
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#endif
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/* function call */
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if ((vtop->type.t & VT_BTYPE) != VT_FUNC) {
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/* pointer test (no array accepted) */
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@ -7913,9 +7908,6 @@ static void decl_initializer_alloc(CType *type, AttributeDef *ad, int r,
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gen_vla_sp_save(addr);
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cur_scope->vla.loc = addr;
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cur_scope->vla.num++;
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#ifdef CONFIG_TCC_BCHECK
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tcc_state->alloca_vla_used |= bcheck;
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#endif
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} else if (has_init) {
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size_t oldreloc_offset = 0;
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if (sec && sec->reloc)
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@ -7948,9 +7940,6 @@ static void gen_function(Sym *sym)
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cur_scope = root_scope = &f;
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nocode_wanted = 0;
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#ifdef CONFIG_TCC_BCHECK
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tcc_state->alloca_vla_used = 0;
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#endif
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ind = cur_text_section->data_offset;
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if (sym->a.aligned) {
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size_t newoff = section_add(cur_text_section, 0,
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31
x86_64-gen.c
31
x86_64-gen.c
@ -146,6 +146,16 @@ ST_DATA const int reg_classes[NB_REGS] = {
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static unsigned long func_sub_sp_offset;
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static int func_ret_sub;
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#if defined(CONFIG_TCC_BCHECK)
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static addr_t func_bound_offset;
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static unsigned long func_bound_ind;
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static int func_bound_alloca_used;
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#endif
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#ifdef TCC_TARGET_PE
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static int func_scratch, func_alloca;
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#endif
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/* XXX: make it faster ? */
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ST_FUNC void g(int c)
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{
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@ -626,6 +636,10 @@ static void gcall_or_jmp(int is_jmp)
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greloca(cur_text_section, vtop->sym, ind + 1, R_X86_64_PLT32, (int)(vtop->c.i-4));
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#endif
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oad(0xe8 + is_jmp, 0); /* call/jmp im */
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#ifdef CONFIG_TCC_BCHECK
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if (tcc_state->do_bounds_check && vtop->sym->v == TOK_alloca)
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func_bound_alloca_used = 1;
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#endif
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} else {
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/* otherwise, indirect call */
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r = TREG_R11;
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@ -637,8 +651,6 @@ static void gcall_or_jmp(int is_jmp)
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}
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#if defined(CONFIG_TCC_BCHECK)
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static addr_t func_bound_offset;
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static unsigned long func_bound_ind;
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static void gen_bounds_call(int v)
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{
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@ -713,6 +725,7 @@ static void gen_bounds_prolog(void)
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/* leave some room for bound checking code */
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func_bound_offset = lbounds_section->data_offset;
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func_bound_ind = ind;
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func_bound_alloca_used = 0;
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o(0xb848 + TREG_FASTCALL_1 * 0x100); /*lbound section pointer */
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gen_le64 (0);
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oad(0xb8, 0); /* call to function */
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@ -724,6 +737,9 @@ static void gen_bounds_epilog(void)
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addr_t *bounds_ptr;
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Sym *sym_data;
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if (func_bound_offset == lbounds_section->data_offset && !func_bound_alloca_used)
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return;
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/* add end of table info */
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bounds_ptr = section_ptr_add(lbounds_section, sizeof(addr_t));
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*bounds_ptr = 0;
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@ -750,8 +766,6 @@ static void gen_bounds_epilog(void)
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#ifdef TCC_TARGET_PE
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static int func_scratch, func_alloca;
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#define REGN 4
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static const uint8_t arg_regs[REGN] = {
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TREG_RCX, TREG_RDX, TREG_R8, TREG_R9
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@ -948,7 +962,6 @@ void gfunc_call(int nb_args)
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if (tcc_state->do_bounds_check)
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gen_bounds_call(TOK___bound_alloca_nr); /* new region */
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#endif
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}
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vtop--;
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}
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@ -1041,9 +1054,7 @@ void gfunc_epilog(void)
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loc = (loc & -16) - func_scratch;
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#ifdef CONFIG_TCC_BCHECK
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if (tcc_state->do_bounds_check &&
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(func_bound_offset != lbounds_section->data_offset ||
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tcc_state->alloca_vla_used))
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if (tcc_state->do_bounds_check)
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gen_bounds_epilog();
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#endif
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@ -1623,9 +1634,7 @@ void gfunc_epilog(void)
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int v, saved_ind;
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#ifdef CONFIG_TCC_BCHECK
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if (tcc_state->do_bounds_check &&
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(func_bound_offset != lbounds_section->data_offset ||
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tcc_state->alloca_vla_used))
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if (tcc_state->do_bounds_check)
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gen_bounds_epilog();
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#endif
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o(0xc9); /* leave */
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