1 /* -----------------------------------------------------------------------
2 osf.S - Copyright (c) 1998, 2001 Red Hat
4 Alpha/OSF Foreign Function Interface
6 $Id: osf.S,v 1.1.1.1 1998/11/29 16:48:16 green Exp $
8 Permission is hereby granted, free of charge, to any person obtaining
9 a copy of this software and associated documentation files (the
10 ``Software''), to deal in the Software without restriction, including
11 without limitation the rights to use, copy, modify, merge, publish,
12 distribute, sublicense, and/or sell copies of the Software, and to
13 permit persons to whom the Software is furnished to do so, subject to
14 the following conditions:
16 The above copyright notice and this permission notice shall be included
17 in all copies or substantial portions of the Software.
19 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 OTHER DEALINGS IN THE SOFTWARE.
26 ----------------------------------------------------------------------- */
29 #include <fficonfig.h>
35 /* ffi_call_osf (void *args, unsigned long bytes, unsigned flags,
36 void *raddr, void (*fnaddr)());
38 Bit o trickiness here -- ARGS+BYTES is the base of the stack frame
39 for this function. This has been allocated by ffi_call. We also
40 deallocate some of the stack that has been alloca'd. */
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
133 .frame $30, 16*8, $26, 0
134 .mask 0x4000000, -16*8
143 # Store all of the potential argument registers in va_list format.
157 # Call ffi_closure_osf_inner to do the bulk of the work.
161 jsr $26, ffi_closure_osf_inner
165 # Load up the return value in the proper type.
170 jmp $31, ($1), $load_32
264 .gprel32 $load_none # FFI_TYPE_VOID
265 .gprel32 $load_32 # FFI_TYPE_INT
266 .gprel32 $load_float # FFI_TYPE_FLOAT
267 .gprel32 $load_double # FFI_TYPE_DOUBLE
268 .gprel32 $load_double # FFI_TYPE_LONGDOUBLE
269 .gprel32 $load_u8 # FFI_TYPE_UINT8
270 .gprel32 $load_s8 # FFI_TYPE_SINT8
271 .gprel32 $load_u16 # FFI_TYPE_UINT16
272 .gprel32 $load_s16 # FFI_TYPE_SINT16
273 .gprel32 $load_32 # FFI_TYPE_UINT32
274 .gprel32 $load_32 # FFI_TYPE_SINT32
275 .gprel32 $load_64 # FFI_TYPE_UINT64
276 .gprel32 $load_64 # FFI_TYPE_SINT64
277 .gprel32 $load_none # FFI_TYPE_STRUCT
278 .gprel32 $load_64 # FFI_TYPE_POINTER
280 /* Assert that the table above is in sync with ffi.h. */
282 #if FFI_TYPE_FLOAT != 2 \
283 || FFI_TYPE_DOUBLE != 3 \
284 || FFI_TYPE_UINT8 != 5 \
285 || FFI_TYPE_SINT8 != 6 \
286 || FFI_TYPE_UINT16 != 7 \
287 || FFI_TYPE_SINT16 != 8 \
288 || FFI_TYPE_UINT32 != 9 \
289 || FFI_TYPE_SINT32 != 10 \
290 || FFI_TYPE_UINT64 != 11 \
291 || FFI_TYPE_SINT64 != 12 \
292 || FFI_TYPE_STRUCT != 13 \
293 || FFI_TYPE_POINTER != 14 \
294 || FFI_TYPE_LAST != 14
295 #error "osf.S out of sync with ffi.h"
299 .section .eh_frame,EH_FRAME_FLAGS,@progbits
301 .4byte $LECIE1-$LSCIE1 # Length of Common Information Entry
303 .4byte 0x0 # CIE Identifier Tag
304 .byte 0x1 # CIE Version
305 .ascii "zR\0" # CIE Augmentation
306 .byte 0x1 # uleb128 0x1; CIE Code Alignment Factor
307 .byte 0x78 # sleb128 -8; CIE Data Alignment Factor
308 .byte 26 # CIE RA Column
309 .byte 0x1 # uleb128 0x1; Augmentation size
310 .byte 0x1b # FDE Encoding (pcrel sdata4)
311 .byte 0xc # DW_CFA_def_cfa
312 .byte 30 # uleb128 column 30
313 .byte 0 # uleb128 offset 0
317 .4byte $LEFDE1-$LASFDE1 # FDE Length
319 .4byte $LASFDE1-__FRAME_BEGIN__ # FDE CIE offset
320 .4byte $LFB1-. # FDE initial location
321 .4byte $LFE1-$LFB1 # FDE address range
322 .byte 0x0 # uleb128 0x0; Augmentation size
324 .byte 0x4 # DW_CFA_advance_loc4
326 .byte 0x9a # DW_CFA_offset, column 26
327 .byte 4 # uleb128 4*-8
328 .byte 0x8f # DW_CFA_offset, column 15
329 .byte 0x3 # uleb128 3*-8
330 .byte 0xc # DW_CFA_def_cfa
331 .byte 15 # uleb128 column 15
332 .byte 32 # uleb128 offset 32
334 .byte 0x4 # DW_CFA_advance_loc4
336 .byte 0xda # DW_CFA_restore, column 26
341 .4byte $LEFDE3-$LASFDE3 # FDE Length
343 .4byte $LASFDE3-__FRAME_BEGIN__ # FDE CIE offset
344 .4byte $LFB2-. # FDE initial location
345 .4byte $LFE2-$LFB2 # FDE address range
346 .byte 0x0 # uleb128 0x0; Augmentation size
348 .byte 0x4 # DW_CFA_advance_loc4
350 .byte 0xe # DW_CFA_def_cfa_offset
351 .byte 0x80,0x1 # uleb128 128
353 .byte 0x4 # DW_CFA_advance_loc4
355 .byte 0x9a # DW_CFA_offset, column 26
356 .byte 16 # uleb128 offset 16*-8