1 /* -----------------------------------------------------------------------
2 v8.S - Copyright (c) 1996, 1997, 2003, 2004 Red Hat, Inc.
4 SPARC 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>
30 #define STACKFRAME 96 /* Minimum stack framesize for SPARC */
31 #define ARGS (64+4) /* Offset of register area in frame */
41 save %sp, -STACKFRAME, %sp
44 sub %sp, %i2, %sp ! alloca() space in stack for frame to set up
45 add %sp, STACKFRAME, %l0 ! %l0 has start of
48 mov %l0, %o0 ! call routine to set up frame
50 mov %i1, %o1 ! (delay)
52 ld [%l0+ARGS], %o0 ! call foreign function
59 mov %l0, %sp ! (delay) switch to frame
60 nop ! STRUCT returning functions skip 12 instead of 8 bytes
62 ! If the return value pointer is NULL, assume no return value.
69 st %o0, [%i4] ! (delay)
71 cmp %i3, FFI_TYPE_FLOAT
73 st %f0, [%i4+0] ! (delay)
75 cmp %i3, FFI_TYPE_SINT64
78 cmp %i3, FFI_TYPE_DOUBLE
96 .size ffi_call_v8,.ffi_call_v8_end-ffi_call_v8
100 #define STACKFRAME 104 /* 16*4 register window +
102 6*4 args backing store +
105 /* ffi_closure_v8(...)
107 Receives the closure argument in %g2. */
111 .globl ffi_closure_v8
114 #ifdef HAVE_AS_REGISTER_PSEUDO_OP
115 .register %g2, #scratch
118 ! Reserve frame space for all arguments in case
119 ! we need to align them on a 8-byte boundary.
120 ld [%g2+FFI_TRAMPOLINE_SIZE], %g1
123 add %g1, STACKFRAME, %g1
124 ! %g1 == STACKFRAME + 8*nargs
129 ! Store all of the potential argument registers in va_list format.
137 ! Call ffi_closure_sparc_inner to do the bulk of the work.
141 call ffi_closure_sparc_inner_v8
144 ! Load up the return value in the proper type.
145 ! See ffi_prep_cif_machdep for the list of cases.
146 cmp %o0, FFI_TYPE_VOID
149 cmp %o0, FFI_TYPE_INT
152 cmp %o0, FFI_TYPE_FLOAT
156 cmp %o0, FFI_TYPE_DOUBLE
160 #if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
161 cmp %o0, FFI_TYPE_LONGDOUBLE
165 cmp %o0, FFI_TYPE_STRUCT
185 .size ffi_closure_v8,.ffi_closure_v8_end-ffi_closure_v8
190 #define uanword uaxword
194 #define uanword uaword
197 #ifdef HAVE_RO_EH_FRAME
198 .section ".eh_frame",#alloc
200 .section ".eh_frame",#alloc,#write
203 .uaword .LLECIE1-.LLSCIE1 ! Length of Common Information Entry
205 .uaword 0x0 ! CIE Identifier Tag
206 .byte 0x1 ! CIE Version
207 .ascii "zR\0" ! CIE Augmentation
208 .byte 0x1 ! uleb128 0x1; CIE Code Alignment Factor
209 .byte 0x80-WS ! sleb128 -WS; CIE Data Alignment Factor
210 .byte 0xf ! CIE RA Column
211 .byte 0x1 ! uleb128 0x1; Augmentation size
212 #ifdef HAVE_AS_SPARC_UA_PCREL
213 .byte 0x1b ! FDE Encoding (pcrel sdata4)
215 .byte 0x50 ! FDE Encoding (aligned absolute)
217 .byte 0xc ! DW_CFA_def_cfa
218 .byte 0xe ! uleb128 0xe
219 .byte 0x0 ! uleb128 0x0
223 .uaword .LLEFDE1-.LLASFDE1 ! FDE Length
225 .uaword .LLASFDE1-.LLframe1 ! FDE CIE offset
226 #ifdef HAVE_AS_SPARC_UA_PCREL
227 .uaword %r_disp32(.LLFB1)
228 .uaword .LLFE1-.LLFB1 ! FDE address range
232 .uanword .LLFE1-.LLFB1 ! FDE address range
234 .byte 0x0 ! uleb128 0x0; Augmentation size
235 .byte 0x4 ! DW_CFA_advance_loc4
236 .uaword .LLCFI0-.LLFB1
237 .byte 0xd ! DW_CFA_def_cfa_register
238 .byte 0x1e ! uleb128 0x1e
239 .byte 0x2d ! DW_CFA_GNU_window_save
240 .byte 0x9 ! DW_CFA_register
241 .byte 0xf ! uleb128 0xf
242 .byte 0x1f ! uleb128 0x1f
246 .uaword .LLEFDE2-.LLASFDE2 ! FDE Length
248 .uaword .LLASFDE2-.LLframe1 ! FDE CIE offset
249 #ifdef HAVE_AS_SPARC_UA_PCREL
250 .uaword %r_disp32(.LLFB2)
251 .uaword .LLFE2-.LLFB2 ! FDE address range
255 .uanword .LLFE2-.LLFB2 ! FDE address range
257 .byte 0x0 ! uleb128 0x0; Augmentation size
258 .byte 0x4 ! DW_CFA_advance_loc4
259 .uaword .LLCFI1-.LLFB2
260 .byte 0xd ! DW_CFA_def_cfa_register
261 .byte 0x1e ! uleb128 0x1e
262 .byte 0x2d ! DW_CFA_GNU_window_save
263 .byte 0x9 ! DW_CFA_register
264 .byte 0xf ! uleb128 0xf
265 .byte 0x1f ! uleb128 0x1f
269 #if defined __ELF__ && defined __linux__
270 .section .note.GNU-stack,"",@progbits