1 /* -----------------------------------------------------------------------
2 osf.S - Copyright (c) 1998, 2001, 2007 Red Hat
4 Alpha/OSF Foreign Function Interface
6 Permission is hereby granted, free of charge, to any person obtaining
7 a copy of this software and associated documentation files (the
8 ``Software''), to deal in the Software without restriction, including
9 without limitation the rights to use, copy, modify, merge, publish,
10 distribute, sublicense, and/or sell copies of the Software, and to
11 permit persons to whom the Software is furnished to do so, subject to
12 the following conditions:
14 The above copyright notice and this permission notice shall be included
15 in all copies or substantial portions of the Software.
17 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 OTHER DEALINGS IN THE SOFTWARE.
24 ----------------------------------------------------------------------- */
27 #include <fficonfig.h>
33 /* ffi_call_osf (void *args, unsigned long bytes, unsigned flags,
34 void *raddr, void (*fnaddr)());
36 Bit o trickiness here -- ARGS+BYTES is the base of the stack frame
37 for this function. This has been allocated by ffi_call. We also
38 deallocate some of the stack that has been alloca'd. */
43 FFI_HIDDEN(ffi_call_osf)
46 .frame $15, 32, $26, 0
61 # Load up all of the (potential) argument registers.
75 # Deallocate the register argument area.
81 # If the return value pointer is NULL, assume no return value.
88 # Store the return value out in the proper type.
89 cmpeq $18, FFI_TYPE_INT, $1
91 cmpeq $18, FFI_TYPE_FLOAT, $2
93 cmpeq $18, FFI_TYPE_DOUBLE, $3
125 /* ffi_closure_osf(...)
127 Receives the closure argument in $1. */
130 .globl ffi_closure_osf
132 FFI_HIDDEN(ffi_closure_osf)
135 .frame $30, 16*8, $26, 0
136 .mask 0x4000000, -16*8
145 # Store all of the potential argument registers in va_list format.
159 # Call ffi_closure_osf_inner to do the bulk of the work.
163 jsr $26, ffi_closure_osf_inner
167 # Load up the return value in the proper type.
172 jmp $31, ($1), $load_32
266 .gprel32 $load_none # FFI_TYPE_VOID
267 .gprel32 $load_32 # FFI_TYPE_INT
268 .gprel32 $load_float # FFI_TYPE_FLOAT
269 .gprel32 $load_double # FFI_TYPE_DOUBLE
270 .gprel32 $load_none # FFI_TYPE_LONGDOUBLE
271 .gprel32 $load_u8 # FFI_TYPE_UINT8
272 .gprel32 $load_s8 # FFI_TYPE_SINT8
273 .gprel32 $load_u16 # FFI_TYPE_UINT16
274 .gprel32 $load_s16 # FFI_TYPE_SINT16
275 .gprel32 $load_32 # FFI_TYPE_UINT32
276 .gprel32 $load_32 # FFI_TYPE_SINT32
277 .gprel32 $load_64 # FFI_TYPE_UINT64
278 .gprel32 $load_64 # FFI_TYPE_SINT64
279 .gprel32 $load_none # FFI_TYPE_STRUCT
280 .gprel32 $load_64 # FFI_TYPE_POINTER
282 /* Assert that the table above is in sync with ffi.h. */
284 #if FFI_TYPE_FLOAT != 2 \
285 || FFI_TYPE_DOUBLE != 3 \
286 || FFI_TYPE_UINT8 != 5 \
287 || FFI_TYPE_SINT8 != 6 \
288 || FFI_TYPE_UINT16 != 7 \
289 || FFI_TYPE_SINT16 != 8 \
290 || FFI_TYPE_UINT32 != 9 \
291 || FFI_TYPE_SINT32 != 10 \
292 || FFI_TYPE_UINT64 != 11 \
293 || FFI_TYPE_SINT64 != 12 \
294 || FFI_TYPE_STRUCT != 13 \
295 || FFI_TYPE_POINTER != 14 \
296 || FFI_TYPE_LAST != 14
297 #error "osf.S out of sync with ffi.h"
301 .section .eh_frame,EH_FRAME_FLAGS,@progbits
303 .4byte $LECIE1-$LSCIE1 # Length of Common Information Entry
305 .4byte 0x0 # CIE Identifier Tag
306 .byte 0x1 # CIE Version
307 .ascii "zR\0" # CIE Augmentation
308 .byte 0x1 # uleb128 0x1; CIE Code Alignment Factor
309 .byte 0x78 # sleb128 -8; CIE Data Alignment Factor
310 .byte 26 # CIE RA Column
311 .byte 0x1 # uleb128 0x1; Augmentation size
312 .byte 0x1b # FDE Encoding (pcrel sdata4)
313 .byte 0xc # DW_CFA_def_cfa
314 .byte 30 # uleb128 column 30
315 .byte 0 # uleb128 offset 0
319 .4byte $LEFDE1-$LASFDE1 # FDE Length
321 .4byte $LASFDE1-__FRAME_BEGIN__ # FDE CIE offset
322 .4byte $LFB1-. # FDE initial location
323 .4byte $LFE1-$LFB1 # FDE address range
324 .byte 0x0 # uleb128 0x0; Augmentation size
326 .byte 0x4 # DW_CFA_advance_loc4
328 .byte 0x9a # DW_CFA_offset, column 26
329 .byte 4 # uleb128 4*-8
330 .byte 0x8f # DW_CFA_offset, column 15
331 .byte 0x3 # uleb128 3*-8
332 .byte 0xc # DW_CFA_def_cfa
333 .byte 15 # uleb128 column 15
334 .byte 32 # uleb128 offset 32
336 .byte 0x4 # DW_CFA_advance_loc4
338 .byte 0xda # DW_CFA_restore, column 26
343 .4byte $LEFDE3-$LASFDE3 # FDE Length
345 .4byte $LASFDE3-__FRAME_BEGIN__ # FDE CIE offset
346 .4byte $LFB2-. # FDE initial location
347 .4byte $LFE2-$LFB2 # FDE address range
348 .byte 0x0 # uleb128 0x0; Augmentation size
350 .byte 0x4 # DW_CFA_advance_loc4
352 .byte 0xe # DW_CFA_def_cfa_offset
353 .byte 0x80,0x1 # uleb128 128
355 .byte 0x4 # DW_CFA_advance_loc4
357 .byte 0x9a # DW_CFA_offset, column 26
358 .byte 16 # uleb128 offset 16*-8