| 1 |
14 |
jlechner |
/* -----------------------------------------------------------------------
|
| 2 |
|
|
darwin.S - Copyright (c) 2000 John Hornkvist
|
| 3 |
|
|
Copyright (c) 2004 Free Software Foundation, Inc.
|
| 4 |
|
|
|
| 5 |
|
|
PowerPC Assembly glue.
|
| 6 |
|
|
|
| 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:
|
| 14 |
|
|
|
| 15 |
|
|
The above copyright notice and this permission notice shall be included
|
| 16 |
|
|
in all copies or substantial portions of the Software.
|
| 17 |
|
|
|
| 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 |
|
|
----------------------------------------------------------------------- */
|
| 26 |
|
|
|
| 27 |
|
|
#if defined(__ppc64__)
|
| 28 |
|
|
#define MODE_CHOICE(x, y) y
|
| 29 |
|
|
#else
|
| 30 |
|
|
#define MODE_CHOICE(x, y) x
|
| 31 |
|
|
#endif
|
| 32 |
|
|
|
| 33 |
|
|
#define g_long MODE_CHOICE(long, quad) /* usage is ".g_long" */
|
| 34 |
|
|
|
| 35 |
|
|
#define LOG2_GPR_BYTES MODE_CHOICE(2,3) /* log2(GPR_BYTES) */
|
| 36 |
|
|
|
| 37 |
|
|
#define LIBFFI_ASM
|
| 38 |
|
|
#include
|
| 39 |
|
|
#include
|
| 40 |
|
|
#define JUMPTARGET(name) name
|
| 41 |
|
|
#define L(x) x
|
| 42 |
|
|
.text
|
| 43 |
|
|
.align 2
|
| 44 |
|
|
.globl _ffi_prep_args
|
| 45 |
|
|
|
| 46 |
|
|
.text
|
| 47 |
|
|
.align 2
|
| 48 |
|
|
.globl _ffi_call_DARWIN
|
| 49 |
|
|
.text
|
| 50 |
|
|
.align 2
|
| 51 |
|
|
_ffi_call_DARWIN:
|
| 52 |
|
|
LFB0:
|
| 53 |
|
|
mr r12,r8 /* We only need r12 until the call,
|
| 54 |
|
|
so it doesn't have to be saved. */
|
| 55 |
|
|
LFB1:
|
| 56 |
|
|
/* Save the old stack pointer as AP. */
|
| 57 |
|
|
mr r8,r1
|
| 58 |
|
|
LCFI0:
|
| 59 |
|
|
/* Allocate the stack space we need. */
|
| 60 |
|
|
stwux r1,r1,r4
|
| 61 |
|
|
|
| 62 |
|
|
/* Save registers we use. */
|
| 63 |
|
|
mflr r9
|
| 64 |
|
|
|
| 65 |
|
|
stw r28,-16(r8)
|
| 66 |
|
|
stw r29,-12(r8)
|
| 67 |
|
|
stw r30,-8(r8)
|
| 68 |
|
|
stw r31,-4(r8)
|
| 69 |
|
|
|
| 70 |
|
|
stw r9,8(r8)
|
| 71 |
|
|
stw r2,20(r1)
|
| 72 |
|
|
LCFI1:
|
| 73 |
|
|
|
| 74 |
|
|
/* Save arguments over call. */
|
| 75 |
|
|
mr r31,r5 /* flags, */
|
| 76 |
|
|
mr r30,r6 /* rvalue, */
|
| 77 |
|
|
mr r29,r7 /* function address, */
|
| 78 |
|
|
mr r28,r8 /* our AP. */
|
| 79 |
|
|
LCFI2:
|
| 80 |
|
|
/* Call ffi_prep_args. */
|
| 81 |
|
|
mr r4,r1
|
| 82 |
|
|
li r9,0
|
| 83 |
|
|
|
| 84 |
|
|
mtctr r12 /* r12 holds address of _ffi_prep_args. */
|
| 85 |
|
|
bctrl
|
| 86 |
|
|
lwz r2,20(r1)
|
| 87 |
|
|
|
| 88 |
|
|
/* Now do the call.
|
| 89 |
|
|
Set up cr1 with bits 4-7 of the flags. */
|
| 90 |
|
|
mtcrf 0x40,r31
|
| 91 |
|
|
/* Get the address to call into CTR. */
|
| 92 |
|
|
mtctr r29
|
| 93 |
|
|
/* Load all those argument registers.
|
| 94 |
|
|
We have set up a nice stack frame, just load it into registers. */
|
| 95 |
|
|
lwz r3,20+(1*4)(r1)
|
| 96 |
|
|
lwz r4,20+(2*4)(r1)
|
| 97 |
|
|
lwz r5,20+(3*4)(r1)
|
| 98 |
|
|
lwz r6,20+(4*4)(r1)
|
| 99 |
|
|
nop
|
| 100 |
|
|
lwz r7,20+(5*4)(r1)
|
| 101 |
|
|
lwz r8,20+(6*4)(r1)
|
| 102 |
|
|
lwz r9,20+(7*4)(r1)
|
| 103 |
|
|
lwz r10,20+(8*4)(r1)
|
| 104 |
|
|
|
| 105 |
|
|
L1:
|
| 106 |
|
|
/* Load all the FP registers. */
|
| 107 |
|
|
bf 6,L2 /* No floats to load. */
|
| 108 |
|
|
lfd f1,-16-(13*8)(r28)
|
| 109 |
|
|
lfd f2,-16-(12*8)(r28)
|
| 110 |
|
|
lfd f3,-16-(11*8)(r28)
|
| 111 |
|
|
lfd f4,-16-(10*8)(r28)
|
| 112 |
|
|
nop
|
| 113 |
|
|
lfd f5,-16-(9*8)(r28)
|
| 114 |
|
|
lfd f6,-16-(8*8)(r28)
|
| 115 |
|
|
lfd f7,-16-(7*8)(r28)
|
| 116 |
|
|
lfd f8,-16-(6*8)(r28)
|
| 117 |
|
|
nop
|
| 118 |
|
|
lfd f9,-16-(5*8)(r28)
|
| 119 |
|
|
lfd f10,-16-(4*8)(r28)
|
| 120 |
|
|
lfd f11,-16-(3*8)(r28)
|
| 121 |
|
|
lfd f12,-16-(2*8)(r28)
|
| 122 |
|
|
nop
|
| 123 |
|
|
lfd f13,-16-(1*8)(r28)
|
| 124 |
|
|
|
| 125 |
|
|
L2:
|
| 126 |
|
|
mr r12,r29 /* Put the target address in r12 as specified. */
|
| 127 |
|
|
mtctr r12
|
| 128 |
|
|
nop
|
| 129 |
|
|
nop
|
| 130 |
|
|
/* Make the call. */
|
| 131 |
|
|
bctrl
|
| 132 |
|
|
|
| 133 |
|
|
/* Now, deal with the return value. */
|
| 134 |
|
|
mtcrf 0x01,r31
|
| 135 |
|
|
|
| 136 |
|
|
bt 30,L(done_return_value)
|
| 137 |
|
|
bt 29,L(fp_return_value)
|
| 138 |
|
|
stw r3,0(r30)
|
| 139 |
|
|
bf 28,L(done_return_value)
|
| 140 |
|
|
stw r4,4(r30)
|
| 141 |
|
|
|
| 142 |
|
|
/* Fall through. */
|
| 143 |
|
|
|
| 144 |
|
|
L(done_return_value):
|
| 145 |
|
|
/* Restore the registers we used and return. */
|
| 146 |
|
|
lwz r9,8(r28)
|
| 147 |
|
|
lwz r31,-4(r28)
|
| 148 |
|
|
mtlr r9
|
| 149 |
|
|
lwz r30,-8(r28)
|
| 150 |
|
|
lwz r29,-12(r28)
|
| 151 |
|
|
lwz r28,-16(r28)
|
| 152 |
|
|
lwz r1,0(r1)
|
| 153 |
|
|
blr
|
| 154 |
|
|
|
| 155 |
|
|
L(fp_return_value):
|
| 156 |
|
|
/* Do we have long double to store? */
|
| 157 |
|
|
bf 31,L(fd_return_value)
|
| 158 |
|
|
stfd f1,0(r30)
|
| 159 |
|
|
stfd f2,8(r30)
|
| 160 |
|
|
b L(done_return_value)
|
| 161 |
|
|
|
| 162 |
|
|
L(fd_return_value):
|
| 163 |
|
|
/* Do we have double to store? */
|
| 164 |
|
|
bf 28,L(float_return_value)
|
| 165 |
|
|
stfd f1,0(r30)
|
| 166 |
|
|
b L(done_return_value)
|
| 167 |
|
|
|
| 168 |
|
|
L(float_return_value):
|
| 169 |
|
|
/* We only have a float to store. */
|
| 170 |
|
|
stfs f1,0(r30)
|
| 171 |
|
|
b L(done_return_value)
|
| 172 |
|
|
|
| 173 |
|
|
LFE1:
|
| 174 |
|
|
/* END(_ffi_call_DARWIN) */
|
| 175 |
|
|
|
| 176 |
|
|
/* Provide a null definition of _ffi_call_AIX. */
|
| 177 |
|
|
.text
|
| 178 |
|
|
.align 2
|
| 179 |
|
|
.globl _ffi_call_AIX
|
| 180 |
|
|
.text
|
| 181 |
|
|
.align 2
|
| 182 |
|
|
_ffi_call_AIX:
|
| 183 |
|
|
blr
|
| 184 |
|
|
/* END(_ffi_call_AIX) */
|
| 185 |
|
|
|
| 186 |
|
|
.data
|
| 187 |
|
|
.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms
|
| 188 |
|
|
EH_frame1:
|
| 189 |
|
|
.set L$set$0,LECIE1-LSCIE1
|
| 190 |
|
|
.long L$set$0 ; Length of Common Information Entry
|
| 191 |
|
|
LSCIE1:
|
| 192 |
|
|
.long 0x0 ; CIE Identifier Tag
|
| 193 |
|
|
.byte 0x1 ; CIE Version
|
| 194 |
|
|
.ascii "zR\0" ; CIE Augmentation
|
| 195 |
|
|
.byte 0x1 ; uleb128 0x1; CIE Code Alignment Factor
|
| 196 |
|
|
.byte 0x7c ; sleb128 -4; CIE Data Alignment Factor
|
| 197 |
|
|
.byte 0x41 ; CIE RA Column
|
| 198 |
|
|
.byte 0x1 ; uleb128 0x1; Augmentation size
|
| 199 |
|
|
.byte 0x90 ; FDE Encoding (indirect pcrel)
|
| 200 |
|
|
.byte 0xc ; DW_CFA_def_cfa
|
| 201 |
|
|
.byte 0x1 ; uleb128 0x1
|
| 202 |
|
|
.byte 0x0 ; uleb128 0x0
|
| 203 |
|
|
.align LOG2_GPR_BYTES
|
| 204 |
|
|
LECIE1:
|
| 205 |
|
|
.globl _ffi_call_DARWIN.eh
|
| 206 |
|
|
_ffi_call_DARWIN.eh:
|
| 207 |
|
|
LSFDE1:
|
| 208 |
|
|
.set L$set$1,LEFDE1-LASFDE1
|
| 209 |
|
|
.long L$set$1 ; FDE Length
|
| 210 |
|
|
LASFDE1:
|
| 211 |
|
|
.long LASFDE1-EH_frame1 ; FDE CIE offset
|
| 212 |
|
|
.g_long LLFB0$non_lazy_ptr-. ; FDE initial location
|
| 213 |
|
|
.set L$set$3,LFE1-LFB0
|
| 214 |
|
|
.g_long L$set$3 ; FDE address range
|
| 215 |
|
|
.byte 0x0 ; uleb128 0x0; Augmentation size
|
| 216 |
|
|
.byte 0x4 ; DW_CFA_advance_loc4
|
| 217 |
|
|
.set L$set$4,LCFI0-LFB1
|
| 218 |
|
|
.long L$set$4
|
| 219 |
|
|
.byte 0xd ; DW_CFA_def_cfa_register
|
| 220 |
|
|
.byte 0x08 ; uleb128 0x08
|
| 221 |
|
|
.byte 0x4 ; DW_CFA_advance_loc4
|
| 222 |
|
|
.set L$set$5,LCFI1-LCFI0
|
| 223 |
|
|
.long L$set$5
|
| 224 |
|
|
.byte 0x11 ; DW_CFA_offset_extended_sf
|
| 225 |
|
|
.byte 0x41 ; uleb128 0x41
|
| 226 |
|
|
.byte 0x7e ; sleb128 -2
|
| 227 |
|
|
.byte 0x9f ; DW_CFA_offset, column 0x1f
|
| 228 |
|
|
.byte 0x1 ; uleb128 0x1
|
| 229 |
|
|
.byte 0x9e ; DW_CFA_offset, column 0x1e
|
| 230 |
|
|
.byte 0x2 ; uleb128 0x2
|
| 231 |
|
|
.byte 0x9d ; DW_CFA_offset, column 0x1d
|
| 232 |
|
|
.byte 0x3 ; uleb128 0x3
|
| 233 |
|
|
.byte 0x9c ; DW_CFA_offset, column 0x1c
|
| 234 |
|
|
.byte 0x4 ; uleb128 0x4
|
| 235 |
|
|
.byte 0x4 ; DW_CFA_advance_loc4
|
| 236 |
|
|
.set L$set$6,LCFI2-LCFI1
|
| 237 |
|
|
.long L$set$6
|
| 238 |
|
|
.byte 0xd ; DW_CFA_def_cfa_register
|
| 239 |
|
|
.byte 0x1c ; uleb128 0x1c
|
| 240 |
|
|
.align LOG2_GPR_BYTES
|
| 241 |
|
|
LEFDE1:
|
| 242 |
|
|
.data
|
| 243 |
|
|
.align LOG2_GPR_BYTES
|
| 244 |
|
|
LLFB0$non_lazy_ptr:
|
| 245 |
|
|
.g_long LFB0
|
