1 /* -----------------------------------------------------------------------
2 sysv.S - Copyright (c) 2013 The Written Word, Inc.
3 - Copyright (c) 1996,1998,2001-2003,2005,2008,2010 Red Hat, Inc.
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. */
52 /* Align the stack pointer to 16-bytes */
53 andl $0xfffffff0, %esp
57 /* Place all of the ffi_prep_args in position */
62 /* Return stack to previous state and call the function */
67 /* Load %ecx with the return type code */
70 /* Protect %esi. We're going to pop it in the epilogue. */
73 /* If the return value pointer is NULL, assume no return value. */
77 /* Even if there is no space for the return value, we are
78 obliged to handle floating-point values. */
79 cmpl $FFI_TYPE_FLOAT,%ecx
89 .long noretval-.Lstore_table /* FFI_TYPE_VOID */
90 .long retint-.Lstore_table /* FFI_TYPE_INT */
91 .long retfloat-.Lstore_table /* FFI_TYPE_FLOAT */
92 .long retdouble-.Lstore_table /* FFI_TYPE_DOUBLE */
93 .long retlongdouble-.Lstore_table /* FFI_TYPE_LONGDOUBLE */
94 .long retuint8-.Lstore_table /* FFI_TYPE_UINT8 */
95 .long retsint8-.Lstore_table /* FFI_TYPE_SINT8 */
96 .long retuint16-.Lstore_table /* FFI_TYPE_UINT16 */
97 .long retsint16-.Lstore_table /* FFI_TYPE_SINT16 */
98 .long retint-.Lstore_table /* FFI_TYPE_UINT32 */
99 .long retint-.Lstore_table /* FFI_TYPE_SINT32 */
100 .long retint64-.Lstore_table /* FFI_TYPE_UINT64 */
101 .long retint64-.Lstore_table /* FFI_TYPE_SINT64 */
102 .long retstruct-.Lstore_table /* FFI_TYPE_STRUCT */
103 .long retint-.Lstore_table /* FFI_TYPE_POINTER */
107 add (%esi, %ecx, 4), %esi
110 /* Sign/zero extend as appropriate. */
128 /* Load %ecx with the pointer to storage for the return value */
134 /* Load %ecx with the pointer to storage for the return value */
140 /* Load %ecx with the pointer to storage for the return value */
146 /* Load %ecx with the pointer to storage for the return value */
153 /* Load %ecx with the pointer to storage for the return value */
168 .size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
171 FFI_HIDDEN (ffi_closure_SYSV)
172 .globl ffi_closure_SYSV
173 .type ffi_closure_SYSV, @function
183 movl %edx, -12(%ebp) /* resp */
186 /* The SUNPRO compiler doesn't support GCC's regparm function
187 attribute, so we have to pass all three arguments to
188 ffi_closure_SYSV_inner on the stack. */
189 movl %edx, 8(%esp) /* args = __builtin_dwarf_cfa () */
191 movl %edx, 4(%esp) /* &resp */
192 movl %eax, (%esp) /* closure */
194 movl %edx, 4(%esp) /* args = __builtin_dwarf_cfa () */
196 movl %edx, (%esp) /* &resp */
198 #if defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE || !defined __PIC__
199 call ffi_closure_SYSV_inner
205 addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
206 call ffi_closure_SYSV_inner@PLT
210 cmpl $FFI_TYPE_INT, %eax
213 /* Handle FFI_TYPE_UINT8, FFI_TYPE_SINT8, FFI_TYPE_UINT16,
214 FFI_TYPE_SINT16, FFI_TYPE_UINT32, FFI_TYPE_SINT32. */
215 cmpl $FFI_TYPE_UINT64, %eax
217 cmpl $FFI_TYPE_UINT8, %eax
220 0: cmpl $FFI_TYPE_FLOAT, %eax
222 cmpl $FFI_TYPE_DOUBLE, %eax
224 cmpl $FFI_TYPE_LONGDOUBLE, %eax
226 cmpl $FFI_TYPE_SINT64, %eax
228 cmpl $FFI_TYPE_STRUCT, %eax
255 .size ffi_closure_SYSV, .-ffi_closure_SYSV
259 /* Precalculate for e.g. the Solaris 10/x86 assembler. */
260 #if FFI_TRAMPOLINE_SIZE == 10
261 #define RAW_CLOSURE_CIF_OFFSET 12
262 #define RAW_CLOSURE_FUN_OFFSET 16
263 #define RAW_CLOSURE_USER_DATA_OFFSET 20
264 #elif FFI_TRAMPOLINE_SIZE == 24
265 #define RAW_CLOSURE_CIF_OFFSET 24
266 #define RAW_CLOSURE_FUN_OFFSET 28
267 #define RAW_CLOSURE_USER_DATA_OFFSET 32
269 #define RAW_CLOSURE_CIF_OFFSET ((FFI_TRAMPOLINE_SIZE + 3) & ~3)
270 #define RAW_CLOSURE_FUN_OFFSET (RAW_CLOSURE_CIF_OFFSET + 4)
271 #define RAW_CLOSURE_USER_DATA_OFFSET (RAW_CLOSURE_FUN_OFFSET + 4)
273 #define CIF_FLAGS_OFFSET 20
276 FFI_HIDDEN (ffi_closure_raw_SYSV)
277 .globl ffi_closure_raw_SYSV
278 .type ffi_closure_raw_SYSV, @function
280 ffi_closure_raw_SYSV:
289 movl RAW_CLOSURE_CIF_OFFSET(%eax), %esi /* closure->cif */
290 movl RAW_CLOSURE_USER_DATA_OFFSET(%eax), %edx /* closure->user_data */
291 movl %edx, 12(%esp) /* user_data */
292 leal 8(%ebp), %edx /* __builtin_dwarf_cfa () */
293 movl %edx, 8(%esp) /* raw_args */
295 movl %edx, 4(%esp) /* &res */
296 movl %esi, (%esp) /* cif */
297 call *RAW_CLOSURE_FUN_OFFSET(%eax) /* closure->fun */
298 movl CIF_FLAGS_OFFSET(%esi), %eax /* rtype */
299 cmpl $FFI_TYPE_INT, %eax
302 /* Handle FFI_TYPE_UINT8, FFI_TYPE_SINT8, FFI_TYPE_UINT16,
303 FFI_TYPE_SINT16, FFI_TYPE_UINT32, FFI_TYPE_SINT32. */
304 cmpl $FFI_TYPE_UINT64, %eax
306 cmpl $FFI_TYPE_UINT8, %eax
309 cmpl $FFI_TYPE_FLOAT, %eax
311 cmpl $FFI_TYPE_DOUBLE, %eax
313 cmpl $FFI_TYPE_LONGDOUBLE, %eax
315 cmpl $FFI_TYPE_SINT64, %eax
339 .size ffi_closure_raw_SYSV, .-ffi_closure_raw_SYSV
343 /* Only emit dwarf unwind info when building with GNU toolchain. */
346 # if defined __sun__ && defined __svr4__
347 /* 32-bit Solaris 2/x86 uses datarel encoding for PIC. GNU ld before 2.22
348 doesn't correctly sort .eh_frame_hdr with mixed encodings, so match this. */
349 # define FDE_ENCODING 0x30 /* datarel */
350 # define FDE_ENCODE(X) X@GOTOFF
352 # define FDE_ENCODING 0x1b /* pcrel sdata4 */
353 # if defined HAVE_AS_X86_PCREL
354 # define FDE_ENCODE(X) X-.
356 # define FDE_ENCODE(X) X@rel
360 # define FDE_ENCODING 0 /* absolute */
361 # define FDE_ENCODE(X) X
364 .section .eh_frame,EH_FRAME_FLAGS,@progbits
366 .long .LECIE1-.LSCIE1 /* Length of Common Information Entry */
368 .long 0x0 /* CIE Identifier Tag */
369 .byte 0x1 /* CIE Version */
370 #ifdef HAVE_AS_ASCII_PSEUDO_OP
372 .ascii "zR\0" /* CIE Augmentation */
374 .ascii "\0" /* CIE Augmentation */
376 #elif defined HAVE_AS_STRING_PSEUDO_OP
378 .string "zR" /* CIE Augmentation */
380 .string "" /* CIE Augmentation */
383 #error missing .ascii/.string
385 .byte 0x1 /* .uleb128 0x1; CIE Code Alignment Factor */
386 .byte 0x7c /* .sleb128 -4; CIE Data Alignment Factor */
387 .byte 0x8 /* CIE RA Column */
389 .byte 0x1 /* .uleb128 0x1; Augmentation size */
392 .byte 0xc /* DW_CFA_def_cfa */
393 .byte 0x4 /* .uleb128 0x4 */
394 .byte 0x4 /* .uleb128 0x4 */
395 .byte 0x88 /* DW_CFA_offset, column 0x8 */
396 .byte 0x1 /* .uleb128 0x1 */
400 .long .LEFDE1-.LASFDE1 /* FDE Length */
402 .long .LASFDE1-.Lframe1 /* FDE CIE offset */
403 .long FDE_ENCODE(.LFB1) /* FDE initial location */
404 .long .LFE1-.LFB1 /* FDE address range */
406 .byte 0x0 /* .uleb128 0x0; Augmentation size */
408 .byte 0x4 /* DW_CFA_advance_loc4 */
410 .byte 0xe /* DW_CFA_def_cfa_offset */
411 .byte 0x8 /* .uleb128 0x8 */
412 .byte 0x85 /* DW_CFA_offset, column 0x5 */
413 .byte 0x2 /* .uleb128 0x2 */
414 .byte 0x4 /* DW_CFA_advance_loc4 */
416 .byte 0xd /* DW_CFA_def_cfa_register */
417 .byte 0x5 /* .uleb128 0x5 */
421 .long .LEFDE2-.LASFDE2 /* FDE Length */
423 .long .LASFDE2-.Lframe1 /* FDE CIE offset */
424 .long FDE_ENCODE(.LFB2) /* FDE initial location */
425 .long .LFE2-.LFB2 /* FDE address range */
427 .byte 0x0 /* .uleb128 0x0; Augmentation size */
429 .byte 0x4 /* DW_CFA_advance_loc4 */
431 .byte 0xe /* DW_CFA_def_cfa_offset */
432 .byte 0x8 /* .uleb128 0x8 */
433 .byte 0x85 /* DW_CFA_offset, column 0x5 */
434 .byte 0x2 /* .uleb128 0x2 */
435 .byte 0x4 /* DW_CFA_advance_loc4 */
437 .byte 0xd /* DW_CFA_def_cfa_register */
438 .byte 0x5 /* .uleb128 0x5 */
439 #if !defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE && defined __PIC__
440 .byte 0x4 /* DW_CFA_advance_loc4 */
442 .byte 0x83 /* DW_CFA_offset, column 0x3 */
443 .byte 0xa /* .uleb128 0xa */
451 .long .LEFDE3-.LASFDE3 /* FDE Length */
453 .long .LASFDE3-.Lframe1 /* FDE CIE offset */
454 .long FDE_ENCODE(.LFB3) /* FDE initial location */
455 .long .LFE3-.LFB3 /* FDE address range */
457 .byte 0x0 /* .uleb128 0x0; Augmentation size */
459 .byte 0x4 /* DW_CFA_advance_loc4 */
461 .byte 0xe /* DW_CFA_def_cfa_offset */
462 .byte 0x8 /* .uleb128 0x8 */
463 .byte 0x85 /* DW_CFA_offset, column 0x5 */
464 .byte 0x2 /* .uleb128 0x2 */
465 .byte 0x4 /* DW_CFA_advance_loc4 */
467 .byte 0xd /* DW_CFA_def_cfa_register */
468 .byte 0x5 /* .uleb128 0x5 */
469 .byte 0x4 /* DW_CFA_advance_loc4 */
471 .byte 0x86 /* DW_CFA_offset, column 0x6 */
472 .byte 0x3 /* .uleb128 0x3 */
479 #endif /* ifndef __x86_64__ */
481 #if defined __ELF__ && defined __linux__
482 .section .note.GNU-stack,"",@progbits