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/* -----------------------------------------------------------------------
darwin_closure.S - Copyright (c) 2002, 2003, 2004, Free Software Foundation,
Inc. based on ppc_closure.S
PowerPC Assembly glue.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
#define LIBFFI_ASM
#define L(x) x
#if defined(__ppc64__)
#define MODE_CHOICE(x, y) y
#else
#define MODE_CHOICE(x, y) x
#endif
#define lgu MODE_CHOICE(lwzu, ldu)
#define g_long MODE_CHOICE(long, quad) /* usage is ".g_long" */
#define LOG2_GPR_BYTES MODE_CHOICE(2,3) /* log2(GPR_BYTES) */
.file "darwin_closure.S"
.text
.align LOG2_GPR_BYTES
.globl _ffi_closure_ASM
.text
.align LOG2_GPR_BYTES
_ffi_closure_ASM:
LFB1:
mflr r0 /* extract return address */
stw r0,8(r1) /* save the return address */
LCFI0:
/* 24 Bytes (Linkage Area)
32 Bytes (outgoing parameter area, always reserved)
104 Bytes (13*8 from FPR)
16 Bytes (result)
176 Bytes */
stwu r1,-176(r1) /* skip over caller save area
keep stack aligned to 16. */
LCFI1:
/* We want to build up an area for the parameters passed
in registers. (both floating point and integer) */
/* We store gpr 3 to gpr 10 (aligned to 4)
in the parents outgoing area. */
stw r3,200(r1)
stw r4,204(r1)
stw r5,208(r1)
stw r6,212(r1)
stw r7,216(r1)
stw r8,220(r1)
stw r9,224(r1)
stw r10,228(r1)
/* We save fpr 1 to fpr 13. (aligned to 8) */
stfd f1,56(r1)
stfd f2,64(r1)
stfd f3,72(r1)
stfd f4,80(r1)
stfd f5,88(r1)
stfd f6,96(r1)
stfd f7,104(r1)
stfd f8,112(r1)
stfd f9,120(r1)
stfd f10,128(r1)
stfd f11,136(r1)
stfd f12,144(r1)
stfd f13,152(r1)
/* Set up registers for the routine that actually does the work
get the context pointer from the trampoline. */
mr r3,r11
/* Now load up the pointer to the result storage. */
addi r4,r1,160
/* Now load up the pointer to the saved gpr registers. */
addi r5,r1,200
/* Now load up the pointer to the saved fpr registers. */
addi r6,r1,56
/* Make the call. */
bl Lffi_closure_helper_DARWIN$stub
/* Now r3 contains the return type
so use it to look up in a table
so we know how to deal with each type. */
/* Look up the proper starting point in table
by using return type as offset. */
addi r5,r1,160 /* Get pointer to results area. */
bl Lget_ret_type0_addr /* Get pointer to Lret_type0 into LR. */
mflr r4 /* Move to r4. */
slwi r3,r3,4 /* Now multiply return type by 16. */
add r3,r3,r4 /* Add contents of table to table address. */
mtctr r3
bctr /* Jump to it. */
LFE1:
/* Each of the ret_typeX code fragments has to be exactly 16 bytes long
(4 instructions). For cache effectiveness we align to a 16 byte boundary
first. */
.align 4
nop
nop
nop
Lget_ret_type0_addr:
blrl
/* case FFI_TYPE_VOID */
Lret_type0:
b Lfinish
nop
nop
nop
/* case FFI_TYPE_INT */
Lret_type1:
lwz r3,0(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_FLOAT */
Lret_type2:
lfs f1,0(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_DOUBLE */
Lret_type3:
lfd f1,0(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_LONGDOUBLE */
Lret_type4:
lfd f1,0(r5)
lfd f2,8(r5)
b Lfinish
nop
/* case FFI_TYPE_UINT8 */
Lret_type5:
lbz r3,3(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_SINT8 */
Lret_type6:
lbz r3,3(r5)
extsb r3,r3
b Lfinish
nop
/* case FFI_TYPE_UINT16 */
Lret_type7:
lhz r3,2(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_SINT16 */
Lret_type8:
lha r3,2(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_UINT32 */
Lret_type9:
lwz r3,0(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_SINT32 */
Lret_type10:
lwz r3,0(r5)
b Lfinish
nop
nop
/* case FFI_TYPE_UINT64 */
Lret_type11:
lwz r3,0(r5)
lwz r4,4(r5)
b Lfinish
nop
/* case FFI_TYPE_SINT64 */
Lret_type12:
lwz r3,0(r5)
lwz r4,4(r5)
b Lfinish
nop
/* case FFI_TYPE_STRUCT */
Lret_type13:
b Lfinish
nop
nop
nop
/* case FFI_TYPE_POINTER */
Lret_type14:
lwz r3,0(r5)
b Lfinish
nop
nop
/* case done */
Lfinish:
addi r1,r1,176 /* Restore stack pointer. */
lwz r0,8(r1) /* Get return address. */
mtlr r0 /* Reset link register. */
blr
/* END(ffi_closure_ASM) */
.data
.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
EH_frame1:
.set L$set$0,LECIE1-LSCIE1
.long L$set$0 ; Length of Common Information Entry
LSCIE1:
.long 0x0 ; CIE Identifier Tag
.byte 0x1 ; CIE Version
.ascii "zR\0" ; CIE Augmentation
.byte 0x1 ; uleb128 0x1; CIE Code Alignment Factor
.byte 0x7c ; sleb128 -4; CIE Data Alignment Factor
.byte 0x41 ; CIE RA Column
.byte 0x1 ; uleb128 0x1; Augmentation size
.byte 0x90 ; FDE Encoding (indirect pcrel)
.byte 0xc ; DW_CFA_def_cfa
.byte 0x1 ; uleb128 0x1
.byte 0x0 ; uleb128 0x0
.align LOG2_GPR_BYTES
LECIE1:
.globl _ffi_closure_ASM.eh
_ffi_closure_ASM.eh:
LSFDE1:
.set L$set$1,LEFDE1-LASFDE1
.long L$set$1 ; FDE Length
LASFDE1:
.long LASFDE1-EH_frame1 ; FDE CIE offset
.g_long LLFB1$non_lazy_ptr-. ; FDE initial location
.set L$set$3,LFE1-LFB1
.g_long L$set$3 ; FDE address range
.byte 0x0 ; uleb128 0x0; Augmentation size
.byte 0x4 ; DW_CFA_advance_loc4
.set L$set$3,LCFI1-LCFI0
.long L$set$3
.byte 0xe ; DW_CFA_def_cfa_offset
.byte 176,1 ; uleb128 176
.byte 0x4 ; DW_CFA_advance_loc4
.set L$set$4,LCFI0-LFB1
.long L$set$4
.byte 0x11 ; DW_CFA_offset_extended_sf
.byte 0x41 ; uleb128 0x41
.byte 0x7e ; sleb128 -2
.align LOG2_GPR_BYTES
LEFDE1:
.data
.align LOG2_GPR_BYTES
LDFCM0:
.section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
.align LOG2_GPR_BYTES
Lffi_closure_helper_DARWIN$stub:
#if 1
.indirect_symbol _ffi_closure_helper_DARWIN
mflr r0
bcl 20,31,LO$ffi_closure_helper_DARWIN
LO$ffi_closure_helper_DARWIN:
mflr r11
addis r11,r11,ha16(L_ffi_closure_helper_DARWIN$lazy_ptr - LO$ffi_closure_helper_DARWIN)
mtlr r0
lgu r12,lo16(L_ffi_closure_helper_DARWIN$lazy_ptr - LO$ffi_closure_helper_DARWIN)(r11)
mtctr r12
bctr
.lazy_symbol_pointer
L_ffi_closure_helper_DARWIN$lazy_ptr:
.indirect_symbol _ffi_closure_helper_DARWIN
.g_long dyld_stub_binding_helper
#endif
.data
.align LOG2_GPR_BYTES
LLFB1$non_lazy_ptr:
.g_long LFB1
|
