1 /* -----------------------------------------------------------------------
2 aix.S - Copyright (c) 2002 Free Software Foundation, Inc.
3 based on darwin.S by John Hornkvist
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, EXPRESS
19 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24 OTHER DEALINGS IN THE SOFTWARE.
25 ----------------------------------------------------------------------- */
83 #include <fficonfig.h>
85 #define JUMPTARGET(name) name
97 .csect ffi_call_AIX[DS]
99 .long .ffi_call_AIX, TOC[tc0], 0
102 mr r12,r8 // We only need r12 until the call, so it doesn't have to be saved...
103 /* Save the old stack pointer as AP. */
106 /* Allocate the stack space we need. */
109 /* Save registers we use. */
120 /* Save arguments over call... */
121 mr r31,r5 /* flags, */
122 mr r30,r6 /* rvalue, */
123 mr r29,r7 /* function address, */
124 mr r28,r8 /* our AP. */
126 /* Call ffi_prep_args. */
132 mtctr r12 // r12 holds address of _ffi_prep_args
136 /* Now do the call. */
138 /* Set up cr1 with bits 4-7 of the flags. */
143 /* Load all those argument registers. */
144 // We have set up a nice stack frame, just load it into registers.
156 /* Load all the FP registers. */
158 lfd f1,-16-(13*8)(r28)
159 lfd f2,-16-(12*8)(r28)
160 lfd f3,-16-(11*8)(r28)
161 lfd f4,-16-(10*8)(r28)
163 lfd f5,-16-(9*8)(r28)
164 lfd f6,-16-(8*8)(r28)
165 lfd f7,-16-(7*8)(r28)
166 lfd f8,-16-(6*8)(r28)
168 lfd f9,-16-(5*8)(r28)
169 lfd f10,-16-(4*8)(r28)
170 lfd f11,-16-(3*8)(r28)
171 lfd f12,-16-(2*8)(r28)
173 lfd f13,-16-(1*8)(r28)
180 /* Now, deal with the return value. */
183 bt 30,L(done_return_value)
184 bt 29,L(fp_return_value)
186 bf 28,L(done_return_value)
189 /* Fall through... */
191 L(done_return_value):
192 /* Restore the registers we used and return. */
203 bf 28,L(float_return_value)
205 b L(done_return_value)
206 L(float_return_value):
208 b L(done_return_value)
210 .byte 0,0,0,1,128,4,0,0
215 .globl ffi_call_DARWIN
216 .globl .ffi_call_DARWIN
217 .csect ffi_call_DARWIN[DS]
219 .long .ffi_call_DARWIN, TOC[tc0], 0
224 .byte 0,0,0,0,0,0,0,0
225 //END(ffi_call_DARWIN)