1 /* -----------------------------------------------------------------------
2 sysv.S - Copyright (c) 1996, 1998, 2001, 2002, 2003, 2005, 2008
5 X86 Foreign Function Interface
7 Permission is hereby granted, free of charge, to any person obtaining
8 a copy of this software and associated documentation files (the
9 ``Software''), to deal in the Software without restriction, including
10 without limitation the rights to use, copy, modify, merge, publish,
11 distribute, sublicense, and/or sell copies of the Software, and to
12 permit persons to whom the Software is furnished to do so, subject to
13 the following conditions:
15 The above copyright notice and this permission notice shall be included
16 in all copies or substantial portions of the Software.
18 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
22 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
23 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 DEALINGS IN THE SOFTWARE.
26 ----------------------------------------------------------------------- */
31 #include <fficonfig.h>
40 .type ffi_call_SYSV,@function
48 /* Make room for all of the new args. */
54 /* Place all of the ffi_prep_args in position */
59 /* Return stack to previous state and call the function */
64 /* Load %ecx with the return type code */
67 /* Protect %esi. We're going to pop it in the epilogue. */
70 /* If the return value pointer is NULL, assume no return value. */
74 /* Even if there is no space for the return value, we are
75 obliged to handle floating-point values. */
76 cmpl $FFI_TYPE_FLOAT,%ecx
86 .long noretval-.Lstore_table /* FFI_TYPE_VOID */
87 .long retint-.Lstore_table /* FFI_TYPE_INT */
88 .long retfloat-.Lstore_table /* FFI_TYPE_FLOAT */
89 .long retdouble-.Lstore_table /* FFI_TYPE_DOUBLE */
90 .long retlongdouble-.Lstore_table /* FFI_TYPE_LONGDOUBLE */
91 .long retuint8-.Lstore_table /* FFI_TYPE_UINT8 */
92 .long retsint8-.Lstore_table /* FFI_TYPE_SINT8 */
93 .long retuint16-.Lstore_table /* FFI_TYPE_UINT16 */
94 .long retsint16-.Lstore_table /* FFI_TYPE_SINT16 */
95 .long retint-.Lstore_table /* FFI_TYPE_UINT32 */
96 .long retint-.Lstore_table /* FFI_TYPE_SINT32 */
97 .long retint64-.Lstore_table /* FFI_TYPE_UINT64 */
98 .long retint64-.Lstore_table /* FFI_TYPE_SINT64 */
99 .long retstruct-.Lstore_table /* FFI_TYPE_STRUCT */
100 .long retint-.Lstore_table /* FFI_TYPE_POINTER */
104 add (%esi, %ecx, 4), %esi
107 /* Sign/zero extend as appropriate. */
125 /* Load %ecx with the pointer to storage for the return value */
131 /* Load %ecx with the pointer to storage for the return value */
137 /* Load %ecx with the pointer to storage for the return value */
143 /* Load %ecx with the pointer to storage for the return value */
150 /* Load %ecx with the pointer to storage for the return value */
165 .size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
168 FFI_HIDDEN (ffi_closure_SYSV)
169 .globl ffi_closure_SYSV
170 .type ffi_closure_SYSV, @function
180 movl %edx, -12(%ebp) /* resp */
182 movl %edx, 4(%esp) /* args = __builtin_dwarf_cfa () */
184 movl %edx, (%esp) /* &resp */
185 #if defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE || !defined __PIC__
186 call ffi_closure_SYSV_inner
192 addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
193 call ffi_closure_SYSV_inner@PLT
197 cmpl $FFI_TYPE_INT, %eax
200 /* Handle FFI_TYPE_UINT8, FFI_TYPE_SINT8, FFI_TYPE_UINT16,
201 FFI_TYPE_SINT16, FFI_TYPE_UINT32, FFI_TYPE_SINT32. */
202 cmpl $FFI_TYPE_UINT64, %eax
204 cmpl $FFI_TYPE_UINT8, %eax
207 0: cmpl $FFI_TYPE_FLOAT, %eax
209 cmpl $FFI_TYPE_DOUBLE, %eax
211 cmpl $FFI_TYPE_LONGDOUBLE, %eax
213 cmpl $FFI_TYPE_SINT64, %eax
215 cmpl $FFI_TYPE_STRUCT, %eax
242 .size ffi_closure_SYSV, .-ffi_closure_SYSV
246 /* Precalculate for e.g. the Solaris 10/x86 assembler. */
247 #if FFI_TRAMPOLINE_SIZE == 10
248 #define RAW_CLOSURE_CIF_OFFSET 12
249 #define RAW_CLOSURE_FUN_OFFSET 16
250 #define RAW_CLOSURE_USER_DATA_OFFSET 20
251 #elif FFI_TRAMPOLINE_SIZE == 24
252 #define RAW_CLOSURE_CIF_OFFSET 24
253 #define RAW_CLOSURE_FUN_OFFSET 28
254 #define RAW_CLOSURE_USER_DATA_OFFSET 32
256 #define RAW_CLOSURE_CIF_OFFSET ((FFI_TRAMPOLINE_SIZE + 3) & ~3)
257 #define RAW_CLOSURE_FUN_OFFSET (RAW_CLOSURE_CIF_OFFSET + 4)
258 #define RAW_CLOSURE_USER_DATA_OFFSET (RAW_CLOSURE_FUN_OFFSET + 4)
260 #define CIF_FLAGS_OFFSET 20
263 FFI_HIDDEN (ffi_closure_raw_SYSV)
264 .globl ffi_closure_raw_SYSV
265 .type ffi_closure_raw_SYSV, @function
267 ffi_closure_raw_SYSV:
276 movl RAW_CLOSURE_CIF_OFFSET(%eax), %esi /* closure->cif */
277 movl RAW_CLOSURE_USER_DATA_OFFSET(%eax), %edx /* closure->user_data */
278 movl %edx, 12(%esp) /* user_data */
279 leal 8(%ebp), %edx /* __builtin_dwarf_cfa () */
280 movl %edx, 8(%esp) /* raw_args */
282 movl %edx, 4(%esp) /* &res */
283 movl %esi, (%esp) /* cif */
284 call *RAW_CLOSURE_FUN_OFFSET(%eax) /* closure->fun */
285 movl CIF_FLAGS_OFFSET(%esi), %eax /* rtype */
286 cmpl $FFI_TYPE_INT, %eax
289 /* Handle FFI_TYPE_UINT8, FFI_TYPE_SINT8, FFI_TYPE_UINT16,
290 FFI_TYPE_SINT16, FFI_TYPE_UINT32, FFI_TYPE_SINT32. */
291 cmpl $FFI_TYPE_UINT64, %eax
293 cmpl $FFI_TYPE_UINT8, %eax
296 cmpl $FFI_TYPE_FLOAT, %eax
298 cmpl $FFI_TYPE_DOUBLE, %eax
300 cmpl $FFI_TYPE_LONGDOUBLE, %eax
302 cmpl $FFI_TYPE_SINT64, %eax
326 .size ffi_closure_raw_SYSV, .-ffi_closure_raw_SYSV
329 .section .eh_frame,EH_FRAME_FLAGS,@progbits
331 .long .LECIE1-.LSCIE1 /* Length of Common Information Entry */
333 .long 0x0 /* CIE Identifier Tag */
334 .byte 0x1 /* CIE Version */
336 .ascii "zR\0" /* CIE Augmentation */
338 .ascii "\0" /* CIE Augmentation */
340 .byte 0x1 /* .uleb128 0x1; CIE Code Alignment Factor */
341 .byte 0x7c /* .sleb128 -4; CIE Data Alignment Factor */
342 .byte 0x8 /* CIE RA Column */
344 .byte 0x1 /* .uleb128 0x1; Augmentation size */
345 .byte 0x1b /* FDE Encoding (pcrel sdata4) */
347 .byte 0xc /* DW_CFA_def_cfa */
348 .byte 0x4 /* .uleb128 0x4 */
349 .byte 0x4 /* .uleb128 0x4 */
350 .byte 0x88 /* DW_CFA_offset, column 0x8 */
351 .byte 0x1 /* .uleb128 0x1 */
355 .long .LEFDE1-.LASFDE1 /* FDE Length */
357 .long .LASFDE1-.Lframe1 /* FDE CIE offset */
358 #if defined __PIC__ && defined HAVE_AS_X86_PCREL
359 .long .LFB1-. /* FDE initial location */
360 #elif defined __PIC__
365 .long .LFE1-.LFB1 /* FDE address range */
367 .byte 0x0 /* .uleb128 0x0; Augmentation size */
369 .byte 0x4 /* DW_CFA_advance_loc4 */
371 .byte 0xe /* DW_CFA_def_cfa_offset */
372 .byte 0x8 /* .uleb128 0x8 */
373 .byte 0x85 /* DW_CFA_offset, column 0x5 */
374 .byte 0x2 /* .uleb128 0x2 */
375 .byte 0x4 /* DW_CFA_advance_loc4 */
377 .byte 0xd /* DW_CFA_def_cfa_register */
378 .byte 0x5 /* .uleb128 0x5 */
382 .long .LEFDE2-.LASFDE2 /* FDE Length */
384 .long .LASFDE2-.Lframe1 /* FDE CIE offset */
385 #if defined __PIC__ && defined HAVE_AS_X86_PCREL
386 .long .LFB2-. /* FDE initial location */
387 #elif defined __PIC__
392 .long .LFE2-.LFB2 /* FDE address range */
394 .byte 0x0 /* .uleb128 0x0; Augmentation size */
396 .byte 0x4 /* DW_CFA_advance_loc4 */
398 .byte 0xe /* DW_CFA_def_cfa_offset */
399 .byte 0x8 /* .uleb128 0x8 */
400 .byte 0x85 /* DW_CFA_offset, column 0x5 */
401 .byte 0x2 /* .uleb128 0x2 */
402 .byte 0x4 /* DW_CFA_advance_loc4 */
404 .byte 0xd /* DW_CFA_def_cfa_register */
405 .byte 0x5 /* .uleb128 0x5 */
406 #if !defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE && defined __PIC__
407 .byte 0x4 /* DW_CFA_advance_loc4 */
409 .byte 0x83 /* DW_CFA_offset, column 0x3 */
410 .byte 0xa /* .uleb128 0xa */
418 .long .LEFDE3-.LASFDE3 /* FDE Length */
420 .long .LASFDE3-.Lframe1 /* FDE CIE offset */
421 #if defined __PIC__ && defined HAVE_AS_X86_PCREL
422 .long .LFB3-. /* FDE initial location */
423 #elif defined __PIC__
428 .long .LFE3-.LFB3 /* FDE address range */
430 .byte 0x0 /* .uleb128 0x0; Augmentation size */
432 .byte 0x4 /* DW_CFA_advance_loc4 */
434 .byte 0xe /* DW_CFA_def_cfa_offset */
435 .byte 0x8 /* .uleb128 0x8 */
436 .byte 0x85 /* DW_CFA_offset, column 0x5 */
437 .byte 0x2 /* .uleb128 0x2 */
438 .byte 0x4 /* DW_CFA_advance_loc4 */
440 .byte 0xd /* DW_CFA_def_cfa_register */
441 .byte 0x5 /* .uleb128 0x5 */
442 .byte 0x4 /* DW_CFA_advance_loc4 */
444 .byte 0x86 /* DW_CFA_offset, column 0x6 */
445 .byte 0x3 /* .uleb128 0x3 */
451 #endif /* ifndef __x86_64__ */
453 #if defined __ELF__ && defined __linux__
454 .section .note.GNU-stack,"",@progbits