2 * X86 code generator for TCC
4 * Copyright (c) 2001-2004 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 /* number of available registers */
24 /* a register can belong to several classes. The classes must be
25 sorted from more general to more precise (see gv2() code which does
26 assumptions on it). */
27 #define RC_INT 0x0001 /* generic integer register */
28 #define RC_FLOAT 0x0002 /* generic float register */
33 #define RC_IRET RC_EAX /* function return: integer register */
34 #define RC_LRET RC_EDX /* function return: second integer register */
35 #define RC_FRET RC_ST0 /* function return: float register */
37 /* pretty names for the registers */
45 const int reg_classes
[NB_REGS
] = {
46 /* eax */ RC_INT
| RC_EAX
,
47 /* ecx */ RC_INT
| RC_ECX
,
48 /* edx */ RC_INT
| RC_EDX
,
49 /* st0 */ RC_FLOAT
| RC_ST0
,
52 /* return registers for function */
53 #define REG_IRET TREG_EAX /* single word int return register */
54 #define REG_LRET TREG_EDX /* second word return register (for long long) */
55 #define REG_FRET TREG_ST0 /* float return register */
57 /* defined if function parameters must be evaluated in reverse order */
58 #define INVERT_FUNC_PARAMS
60 /* defined if structures are passed as pointers. Otherwise structures
61 are directly pushed on stack. */
62 //#define FUNC_STRUCT_PARAM_AS_PTR
64 /* pointer size, in bytes */
67 /* long double size and alignment, in bytes */
68 #define LDOUBLE_SIZE 12
69 #define LDOUBLE_ALIGN 4
70 /* maximum alignment (for aligned attribute support) */
73 /******************************************************/
76 #define EM_TCC_TARGET EM_386
78 /* relocation type for 32 bit data relocation */
79 #define R_DATA_32 R_386_32
80 #define R_DATA_PTR R_386_32
81 #define R_JMP_SLOT R_386_JMP_SLOT
82 #define R_COPY R_386_COPY
84 #define ELF_START_ADDR 0x08048000
85 #define ELF_PAGE_SIZE 0x1000
87 /******************************************************/
89 static unsigned long func_sub_sp_offset
;
90 static int func_ret_sub
;
91 #ifdef CONFIG_TCC_BCHECK
92 static unsigned long func_bound_offset
;
95 /* XXX: make it faster ? */
100 if (ind1
> cur_text_section
->data_allocated
)
101 section_realloc(cur_text_section
, ind1
);
102 cur_text_section
->data
[ind
] = c
;
106 void o(unsigned int c
)
128 /* output a symbol and patch all calls to it */
129 void gsym_addr(int t
, int a
)
133 ptr
= (int *)(cur_text_section
->data
+ t
);
134 n
= *ptr
; /* next value */
145 /* psym is used to put an instruction with a data field which is a
146 reference to a symbol. It is in fact the same as oad ! */
149 /* instruction + 4 bytes data. Return the address of the data */
150 static int oad(int c
, int s
)
156 if (ind1
> cur_text_section
->data_allocated
)
157 section_realloc(cur_text_section
, ind1
);
158 *(int *)(cur_text_section
->data
+ ind
) = s
;
164 /* output constant with relocation if 'r & VT_SYM' is true */
165 static void gen_addr32(int r
, Sym
*sym
, int c
)
168 greloc(cur_text_section
, sym
, ind
, R_386_32
);
172 static void gen_addrpc32(int r
, Sym
*sym
, int c
)
175 greloc(cur_text_section
, sym
, ind
, R_386_PC32
);
179 /* generate a modrm reference. 'op_reg' contains the addtionnal 3
181 static void gen_modrm(int op_reg
, int r
, Sym
*sym
, int c
)
183 op_reg
= op_reg
<< 3;
184 if ((r
& VT_VALMASK
) == VT_CONST
) {
185 /* constant memory reference */
187 gen_addr32(r
, sym
, c
);
188 } else if ((r
& VT_VALMASK
) == VT_LOCAL
) {
189 /* currently, we use only ebp as base */
191 /* short reference */
195 oad(0x85 | op_reg
, c
);
198 g(0x00 | op_reg
| (r
& VT_VALMASK
));
202 /* load 'r' from value 'sv' */
203 void load(int r
, SValue
*sv
)
205 int v
, t
, ft
, fc
, fr
;
209 if (pe_dllimport(r
, sv
, load
))
218 if (v
== VT_LLOCAL
) {
220 v1
.r
= VT_LOCAL
| VT_LVAL
;
225 if ((ft
& VT_BTYPE
) == VT_FLOAT
) {
228 } else if ((ft
& VT_BTYPE
) == VT_DOUBLE
) {
231 } else if ((ft
& VT_BTYPE
) == VT_LDOUBLE
) {
234 } else if ((ft
& VT_TYPE
) == VT_BYTE
) {
235 o(0xbe0f); /* movsbl */
236 } else if ((ft
& VT_TYPE
) == (VT_BYTE
| VT_UNSIGNED
)) {
237 o(0xb60f); /* movzbl */
238 } else if ((ft
& VT_TYPE
) == VT_SHORT
) {
239 o(0xbf0f); /* movswl */
240 } else if ((ft
& VT_TYPE
) == (VT_SHORT
| VT_UNSIGNED
)) {
241 o(0xb70f); /* movzwl */
245 gen_modrm(r
, fr
, sv
->sym
, fc
);
248 o(0xb8 + r
); /* mov $xx, r */
249 gen_addr32(fr
, sv
->sym
, fc
);
250 } else if (v
== VT_LOCAL
) {
251 o(0x8d); /* lea xxx(%ebp), r */
252 gen_modrm(r
, VT_LOCAL
, sv
->sym
, fc
);
253 } else if (v
== VT_CMP
) {
254 oad(0xb8 + r
, 0); /* mov $0, r */
255 o(0x0f); /* setxx %br */
258 } else if (v
== VT_JMP
|| v
== VT_JMPI
) {
260 oad(0xb8 + r
, t
); /* mov $1, r */
261 o(0x05eb); /* jmp after */
263 oad(0xb8 + r
, t
^ 1); /* mov $0, r */
266 o(0xc0 + r
+ v
* 8); /* mov v, r */
271 /* store register 'r' in lvalue 'v' */
272 void store(int r
, SValue
*v
)
277 if (pe_dllimport(r
, v
, store
))
282 fr
= v
->r
& VT_VALMASK
;
284 /* XXX: incorrect if float reg to reg */
285 if (bt
== VT_FLOAT
) {
288 } else if (bt
== VT_DOUBLE
) {
291 } else if (bt
== VT_LDOUBLE
) {
292 o(0xc0d9); /* fld %st(0) */
298 if (bt
== VT_BYTE
|| bt
== VT_BOOL
)
303 if (fr
== VT_CONST
||
306 gen_modrm(r
, v
->r
, v
->sym
, fc
);
307 } else if (fr
!= r
) {
308 o(0xc0 + fr
+ r
* 8); /* mov r, fr */
312 static void gadd_sp(int val
)
314 if (val
== (char)val
) {
318 oad(0xc481, val
); /* add $xxx, %esp */
322 /* 'is_jmp' is '1' if it is a jump */
323 static void gcall_or_jmp(int is_jmp
)
326 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
328 if (vtop
->r
& VT_SYM
) {
329 /* relocation case */
330 greloc(cur_text_section
, vtop
->sym
,
331 ind
+ 1, R_386_PC32
);
333 /* put an empty PC32 relocation */
334 put_elf_reloc(symtab_section
, cur_text_section
,
335 ind
+ 1, R_386_PC32
, 0);
337 oad(0xe8 + is_jmp
, vtop
->c
.ul
- 4); /* call/jmp im */
339 /* otherwise, indirect call */
341 o(0xff); /* call/jmp *r */
342 o(0xd0 + r
+ (is_jmp
<< 4));
346 static uint8_t fastcall_regs
[3] = { TREG_EAX
, TREG_EDX
, TREG_ECX
};
347 static uint8_t fastcallw_regs
[2] = { TREG_ECX
, TREG_EDX
};
349 /* Generate function call. The function address is pushed first, then
350 all the parameters in call order. This functions pops all the
351 parameters and the function address. */
352 void gfunc_call(int nb_args
)
354 int size
, align
, r
, args_size
, i
, func_call
;
358 for(i
= 0;i
< nb_args
; i
++) {
359 if ((vtop
->type
.t
& VT_BTYPE
) == VT_STRUCT
) {
360 size
= type_size(&vtop
->type
, &align
);
361 /* align to stack align size */
362 size
= (size
+ 3) & ~3;
363 /* allocate the necessary size on stack */
364 oad(0xec81, size
); /* sub $xxx, %esp */
365 /* generate structure store */
367 o(0x89); /* mov %esp, r */
369 vset(&vtop
->type
, r
| VT_LVAL
, 0);
373 } else if (is_float(vtop
->type
.t
)) {
374 gv(RC_FLOAT
); /* only one float register */
375 if ((vtop
->type
.t
& VT_BTYPE
) == VT_FLOAT
)
377 else if ((vtop
->type
.t
& VT_BTYPE
) == VT_DOUBLE
)
381 oad(0xec81, size
); /* sub $xxx, %esp */
385 o(0x5cd9 + size
- 4); /* fstp[s|l] 0(%esp) */
390 /* simple type (currently always same size) */
391 /* XXX: implicit cast ? */
393 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
) {
395 o(0x50 + vtop
->r2
); /* push r */
399 o(0x50 + r
); /* push r */
404 save_regs(0); /* save used temporary registers */
405 func_sym
= vtop
->type
.ref
;
406 func_call
= FUNC_CALL(func_sym
->r
);
408 if ((func_call
>= FUNC_FASTCALL1
&& func_call
<= FUNC_FASTCALL3
) ||
409 func_call
== FUNC_FASTCALLW
) {
410 int fastcall_nb_regs
;
411 uint8_t *fastcall_regs_ptr
;
412 if (func_call
== FUNC_FASTCALLW
) {
413 fastcall_regs_ptr
= fastcallw_regs
;
414 fastcall_nb_regs
= 2;
416 fastcall_regs_ptr
= fastcall_regs
;
417 fastcall_nb_regs
= func_call
- FUNC_FASTCALL1
+ 1;
419 for(i
= 0;i
< fastcall_nb_regs
; i
++) {
422 o(0x58 + fastcall_regs_ptr
[i
]); /* pop r */
423 /* XXX: incorrect for struct/floats */
430 if ((func_sym
->type
.t
& VT_BTYPE
) == VT_STRUCT
)
433 if (args_size
&& func_call
!= FUNC_STDCALL
)
439 #define FUNC_PROLOG_SIZE 10
441 #define FUNC_PROLOG_SIZE 9
444 /* generate function prolog of type 't' */
445 void gfunc_prolog(CType
*func_type
)
447 int addr
, align
, size
, func_call
, fastcall_nb_regs
;
448 int param_index
, param_addr
;
449 uint8_t *fastcall_regs_ptr
;
453 sym
= func_type
->ref
;
454 func_call
= FUNC_CALL(sym
->r
);
459 if (func_call
>= FUNC_FASTCALL1
&& func_call
<= FUNC_FASTCALL3
) {
460 fastcall_nb_regs
= func_call
- FUNC_FASTCALL1
+ 1;
461 fastcall_regs_ptr
= fastcall_regs
;
462 } else if (func_call
== FUNC_FASTCALLW
) {
463 fastcall_nb_regs
= 2;
464 fastcall_regs_ptr
= fastcallw_regs
;
466 fastcall_nb_regs
= 0;
467 fastcall_regs_ptr
= NULL
;
471 ind
+= FUNC_PROLOG_SIZE
;
472 func_sub_sp_offset
= ind
;
473 /* if the function returns a structure, then add an
474 implicit pointer parameter */
476 if ((func_vt
.t
& VT_BTYPE
) == VT_STRUCT
) {
477 /* XXX: fastcall case ? */
482 /* define parameters */
483 while ((sym
= sym
->next
) != NULL
) {
485 size
= type_size(type
, &align
);
486 size
= (size
+ 3) & ~3;
487 #ifdef FUNC_STRUCT_PARAM_AS_PTR
488 /* structs are passed as pointer */
489 if ((type
->t
& VT_BTYPE
) == VT_STRUCT
) {
493 if (param_index
< fastcall_nb_regs
) {
494 /* save FASTCALL register */
497 gen_modrm(fastcall_regs_ptr
[param_index
], VT_LOCAL
, NULL
, loc
);
503 sym_push(sym
->v
& ~SYM_FIELD
, type
,
504 VT_LOCAL
| lvalue_type(type
->t
), param_addr
);
508 /* pascal type call ? */
509 if (func_call
== FUNC_STDCALL
)
510 func_ret_sub
= addr
- 8;
516 #ifdef CONFIG_TCC_BCHECK
517 /* leave some room for bound checking code */
518 if (tcc_state
->do_bounds_check
) {
519 oad(0xb8, 0); /* lbound section pointer */
520 oad(0xb8, 0); /* call to function */
521 func_bound_offset
= lbounds_section
->data_offset
;
526 /* generate function epilog */
527 void gfunc_epilog(void)
531 #ifdef CONFIG_TCC_BCHECK
532 if (tcc_state
->do_bounds_check
533 && func_bound_offset
!= lbounds_section
->data_offset
) {
537 /* add end of table info */
538 bounds_ptr
= section_ptr_add(lbounds_section
, sizeof(int));
540 /* generate bound local allocation */
542 ind
= func_sub_sp_offset
;
543 sym_data
= get_sym_ref(&char_pointer_type
, lbounds_section
,
544 func_bound_offset
, lbounds_section
->data_offset
);
545 greloc(cur_text_section
, sym_data
,
547 oad(0xb8, 0); /* mov %eax, xxx */
548 sym
= external_global_sym(TOK___bound_local_new
, &func_old_type
, 0);
549 greloc(cur_text_section
, sym
,
550 ind
+ 1, R_386_PC32
);
553 /* generate bound check local freeing */
554 o(0x5250); /* save returned value, if any */
555 greloc(cur_text_section
, sym_data
,
557 oad(0xb8, 0); /* mov %eax, xxx */
558 sym
= external_global_sym(TOK___bound_local_delete
, &func_old_type
, 0);
559 greloc(cur_text_section
, sym
,
560 ind
+ 1, R_386_PC32
);
562 o(0x585a); /* restore returned value, if any */
566 if (func_ret_sub
== 0) {
571 g(func_ret_sub
>> 8);
573 /* align local size to word & save local variables */
577 ind
= func_sub_sp_offset
- FUNC_PROLOG_SIZE
;
580 Sym
*sym
= external_global_sym(TOK___chkstk
, &func_old_type
, 0);
581 oad(0xb8, v
); /* mov stacksize, %eax */
582 oad(0xe8, -4); /* call __chkstk, (does the stackframe too) */
583 greloc(cur_text_section
, sym
, ind
-4, R_386_PC32
);
587 o(0xe58955); /* push %ebp, mov %esp, %ebp */
588 o(0xec81); /* sub esp, stacksize */
590 #if FUNC_PROLOG_SIZE == 10
591 o(0x90); /* adjust to FUNC_PROLOG_SIZE */
597 /* generate a jump to a label */
600 return psym(0xe9, t
);
603 /* generate a jump to a fixed address */
604 void gjmp_addr(int a
)
612 oad(0xe9, a
- ind
- 5);
616 /* generate a test. set 'inv' to invert test. Stack entry is popped */
617 int gtst(int inv
, int t
)
621 v
= vtop
->r
& VT_VALMASK
;
623 /* fast case : can jump directly since flags are set */
625 t
= psym((vtop
->c
.i
- 16) ^ inv
, t
);
626 } else if (v
== VT_JMP
|| v
== VT_JMPI
) {
627 /* && or || optimization */
628 if ((v
& 1) == inv
) {
629 /* insert vtop->c jump list in t */
632 p
= (int *)(cur_text_section
->data
+ *p
);
640 if (is_float(vtop
->type
.t
) ||
641 (vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
) {
645 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
646 /* constant jmp optimization */
647 if ((vtop
->c
.i
!= 0) != inv
)
654 t
= psym(0x85 ^ inv
, t
);
661 /* generate an integer binary operation */
668 case TOK_ADDC1
: /* add with carry generation */
671 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
678 /* XXX: generate inc and dec for smaller code ? */
680 o(0xc0 | (opc
<< 3) | r
);
684 oad(0xc0 | (opc
<< 3) | r
, c
);
690 o((opc
<< 3) | 0x01);
691 o(0xc0 + r
+ fr
* 8);
694 if (op
>= TOK_ULT
&& op
<= TOK_GT
) {
700 case TOK_SUBC1
: /* sub with carry generation */
703 case TOK_ADDC2
: /* add with carry use */
706 case TOK_SUBC2
: /* sub with carry use */
723 o(0xaf0f); /* imul fr, r */
724 o(0xc0 + fr
+ r
* 8);
735 opc
= 0xc0 | (opc
<< 3);
736 if ((vtop
->r
& (VT_VALMASK
| VT_LVAL
| VT_SYM
)) == VT_CONST
) {
741 c
= vtop
->c
.i
& 0x1f;
742 o(0xc1); /* shl/shr/sar $xxx, r */
746 /* we generate the shift in ecx */
749 o(0xd3); /* shl/shr/sar %cl, r */
760 /* first operand must be in eax */
761 /* XXX: need better constraint for second operand */
767 if (op
== TOK_UMULL
) {
768 o(0xf7); /* mul fr */
773 if (op
== TOK_UDIV
|| op
== TOK_UMOD
) {
774 o(0xf7d231); /* xor %edx, %edx, div fr, %eax */
777 o(0xf799); /* cltd, idiv fr, %eax */
780 if (op
== '%' || op
== TOK_UMOD
)
793 /* generate a floating point operation 'v = t1 op t2' instruction. The
794 two operands are guaranted to have the same floating point type */
795 /* XXX: need to use ST1 too */
798 int a
, ft
, fc
, swapped
, r
;
800 /* convert constants to memory references */
801 if ((vtop
[-1].r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
) {
806 if ((vtop
[0].r
& (VT_VALMASK
| VT_LVAL
)) == VT_CONST
)
809 /* must put at least one value in the floating point register */
810 if ((vtop
[-1].r
& VT_LVAL
) &&
811 (vtop
[0].r
& VT_LVAL
)) {
817 /* swap the stack if needed so that t1 is the register and t2 is
818 the memory reference */
819 if (vtop
[-1].r
& VT_LVAL
) {
823 if (op
>= TOK_ULT
&& op
<= TOK_GT
) {
824 /* load on stack second operand */
825 load(TREG_ST0
, vtop
);
826 save_reg(TREG_EAX
); /* eax is used by FP comparison code */
827 if (op
== TOK_GE
|| op
== TOK_GT
)
829 else if (op
== TOK_EQ
|| op
== TOK_NE
)
832 o(0xc9d9); /* fxch %st(1) */
833 o(0xe9da); /* fucompp */
834 o(0xe0df); /* fnstsw %ax */
836 o(0x45e480); /* and $0x45, %ah */
837 o(0x40fC80); /* cmp $0x40, %ah */
838 } else if (op
== TOK_NE
) {
839 o(0x45e480); /* and $0x45, %ah */
840 o(0x40f480); /* xor $0x40, %ah */
842 } else if (op
== TOK_GE
|| op
== TOK_LE
) {
843 o(0x05c4f6); /* test $0x05, %ah */
846 o(0x45c4f6); /* test $0x45, %ah */
853 /* no memory reference possible for long double operations */
854 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LDOUBLE
) {
855 load(TREG_ST0
, vtop
);
880 if ((ft
& VT_BTYPE
) == VT_LDOUBLE
) {
881 o(0xde); /* fxxxp %st, %st(1) */
884 /* if saved lvalue, then we must reload it */
886 if ((r
& VT_VALMASK
) == VT_LLOCAL
) {
890 v1
.r
= VT_LOCAL
| VT_LVAL
;
896 if ((ft
& VT_BTYPE
) == VT_DOUBLE
)
900 gen_modrm(a
, r
, vtop
->sym
, fc
);
906 /* convert integers to fp 't' type. Must handle 'int', 'unsigned int'
907 and 'long long' cases. */
908 void gen_cvt_itof(int t
)
912 if ((vtop
->type
.t
& VT_BTYPE
) == VT_LLONG
) {
913 /* signed long long to float/double/long double (unsigned case
914 is handled generically) */
915 o(0x50 + vtop
->r2
); /* push r2 */
916 o(0x50 + (vtop
->r
& VT_VALMASK
)); /* push r */
917 o(0x242cdf); /* fildll (%esp) */
918 o(0x08c483); /* add $8, %esp */
919 } else if ((vtop
->type
.t
& (VT_BTYPE
| VT_UNSIGNED
)) ==
920 (VT_INT
| VT_UNSIGNED
)) {
921 /* unsigned int to float/double/long double */
922 o(0x6a); /* push $0 */
924 o(0x50 + (vtop
->r
& VT_VALMASK
)); /* push r */
925 o(0x242cdf); /* fildll (%esp) */
926 o(0x08c483); /* add $8, %esp */
928 /* int to float/double/long double */
929 o(0x50 + (vtop
->r
& VT_VALMASK
)); /* push r */
930 o(0x2404db); /* fildl (%esp) */
931 o(0x04c483); /* add $4, %esp */
936 /* convert fp to int 't' type */
937 /* XXX: handle long long case */
938 void gen_cvt_ftoi(int t
)
944 ushort_type
.t
= VT_SHORT
| VT_UNSIGNED
;
953 o(0x2dd9); /* ldcw xxx */
954 sym
= external_global_sym(TOK___tcc_int_fpu_control
,
955 &ushort_type
, VT_LVAL
);
956 greloc(cur_text_section
, sym
,
960 oad(0xec81, size
); /* sub $xxx, %esp */
962 o(0x1cdb); /* fistpl */
964 o(0x3cdf); /* fistpll */
966 o(0x2dd9); /* ldcw xxx */
967 sym
= external_global_sym(TOK___tcc_fpu_control
,
968 &ushort_type
, VT_LVAL
);
969 greloc(cur_text_section
, sym
,
974 o(0x58 + r
); /* pop r */
977 vtop
->r
= r
; /* mark reg as used */
978 r2
= get_reg(RC_INT
);
979 o(0x58 + r2
); /* pop r2 */
982 o(0x04c483); /* add $4, %esp */
988 /* convert from one floating point type to another */
989 void gen_cvt_ftof(int t
)
991 /* all we have to do on i386 is to put the float in a register */
995 /* computed goto support */
1002 /* bound check support functions */
1003 #ifdef CONFIG_TCC_BCHECK
1005 /* generate a bounded pointer addition */
1006 void gen_bounded_ptr_add(void)
1010 /* prepare fast i386 function call (args in eax and edx) */
1011 gv2(RC_EAX
, RC_EDX
);
1012 /* save all temporary registers */
1015 /* do a fast function call */
1016 sym
= external_global_sym(TOK___bound_ptr_add
, &func_old_type
, 0);
1017 greloc(cur_text_section
, sym
,
1018 ind
+ 1, R_386_PC32
);
1020 /* returned pointer is in eax */
1022 vtop
->r
= TREG_EAX
| VT_BOUNDED
;
1023 /* address of bounding function call point */
1024 vtop
->c
.ul
= (cur_text_section
->reloc
->data_offset
- sizeof(Elf32_Rel
));
1027 /* patch pointer addition in vtop so that pointer dereferencing is
1029 void gen_bounded_ptr_deref(void)
1037 /* XXX: put that code in generic part of tcc */
1038 if (!is_float(vtop
->type
.t
)) {
1039 if (vtop
->r
& VT_LVAL_BYTE
)
1041 else if (vtop
->r
& VT_LVAL_SHORT
)
1045 size
= type_size(&vtop
->type
, &align
);
1047 case 1: func
= TOK___bound_ptr_indir1
; break;
1048 case 2: func
= TOK___bound_ptr_indir2
; break;
1049 case 4: func
= TOK___bound_ptr_indir4
; break;
1050 case 8: func
= TOK___bound_ptr_indir8
; break;
1051 case 12: func
= TOK___bound_ptr_indir12
; break;
1052 case 16: func
= TOK___bound_ptr_indir16
; break;
1054 error("unhandled size when derefencing bounded pointer");
1059 /* patch relocation */
1060 /* XXX: find a better solution ? */
1061 rel
= (Elf32_Rel
*)(cur_text_section
->reloc
->data
+ vtop
->c
.ul
);
1062 sym
= external_global_sym(func
, &func_old_type
, 0);
1064 put_extern_sym(sym
, NULL
, 0, 0);
1065 rel
->r_info
= ELF32_R_INFO(sym
->c
, ELF32_R_TYPE(rel
->r_info
));
1069 /* end of X86 code generator */
1070 /*************************************************************/