/* -----------------------------------------------------------------------
darwin.S - Copyright (c) 2000 John Hornkvist
Copyright (c) 2004 Free Software Foundation, Inc.
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.
----------------------------------------------------------------------- */
#if defined(__ppc64__)
#define MODE_CHOICE(x, y) y
#else
#define MODE_CHOICE(x, y) x
#endif
#define g_long MODE_CHOICE(long, quad) /* usage is ".g_long" */
#define LOG2_GPR_BYTES MODE_CHOICE(2,3) /* log2(GPR_BYTES) */
#define LIBFFI_ASM
#include <fficonfig.h>
#include <ffi.h>
#define JUMPTARGET(name) name
#define L(x) x
.text
.align 2
.globl _ffi_prep_args
.text
.align 2
.globl _ffi_call_DARWIN
.text
.align 2
_ffi_call_DARWIN:
LFB0:
mr r12,r8 /* We only need r12 until the call,
so it doesn't have to be saved. */
LFB1:
/* Save the old stack pointer as AP. */
mr r8,r1
LCFI0:
/* Allocate the stack space we need. */
stwux r1,r1,r4
/* Save registers we use. */
mflr r9
stw r28,-16(r8)
stw r29,-12(r8)
stw r30,-8(r8)
stw r31,-4(r8)
stw r9,8(r8)
stw r2,20(r1)
LCFI1:
/* Save arguments over call. */
mr r31,r5 /* flags, */
mr r30,r6 /* rvalue, */
mr r29,r7 /* function address, */
mr r28,r8 /* our AP. */
LCFI2:
/* Call ffi_prep_args. */
mr r4,r1
li r9,0
mtctr r12 /* r12 holds address of _ffi_prep_args. */
bctrl
lwz r2,20(r1)
/* Now do the call.
Set up cr1 with bits 4-7 of the flags. */
mtcrf 0x40,r31
/* Get the address to call into CTR. */
mtctr r29
/* Load all those argument registers.
We have set up a nice stack frame, just load it into registers. */
lwz r3,20+(1*4)(r1)
lwz r4,20+(2*4)(r1)
lwz r5,20+(3*4)(r1)
lwz r6,20+(4*4)(r1)
nop
lwz r7,20+(5*4)(r1)
lwz r8,20+(6*4)(r1)
lwz r9,20+(7*4)(r1)
lwz r10,20+(8*4)(r1)
L1:
/* Load all the FP registers. */
bf 6,L2 /* No floats to load. */
lfd f1,-16-(13*8)(r28)
lfd f2,-16-(12*8)(r28)
lfd f3,-16-(11*8)(r28)
lfd f4,-16-(10*8)(r28)
nop
lfd f5,-16-(9*8)(r28)
lfd f6,-16-(8*8)(r28)
lfd f7,-16-(7*8)(r28)
lfd f8,-16-(6*8)(r28)
nop
lfd f9,-16-(5*8)(r28)
lfd f10,-16-(4*8)(r28)
lfd f11,-16-(3*8)(r28)
lfd f12,-16-(2*8)(r28)
nop
lfd f13,-16-(1*8)(r28)
L2:
mr r12,r29 /* Put the target address in r12 as specified. */
mtctr r12
nop
nop
/* Make the call. */
bctrl
/* Now, deal with the return value. */
mtcrf 0x01,r31
bt 30,L(done_return_value)
bt 29,L(fp_return_value)
stw r3,0(r30)
bf 28,L(done_return_value)
stw r4,4(r30)
/* Fall through. */
L(done_return_value):
/* Restore the registers we used and return. */
lwz r9,8(r28)
lwz r31,-4(r28)
mtlr r9
lwz r30,-8(r28)
lwz r29,-12(r28)
lwz r28,-16(r28)
lwz r1,0(r1)
blr
L(fp_return_value):
/* Do we have long double to store? */
bf 31,L(fd_return_value)
stfd f1,0(r30)
stfd f2,8(r30)
b L(done_return_value)
L(fd_return_value):
/* Do we have double to store? */
bf 28,L(float_return_value)
stfd f1,0(r30)
b L(done_return_value)
L(float_return_value):
/* We only have a float to store. */
stfs f1,0(r30)
b L(done_return_value)
LFE1:
/* END(_ffi_call_DARWIN) */
/* Provide a null definition of _ffi_call_AIX. */
.text
.align 2
.globl _ffi_call_AIX
.text
.align 2
_ffi_call_AIX:
blr
/* END(_ffi_call_AIX) */
.data
.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms
EH_frame1:
.set L$set$0,LECIE1-LSCIE1
.long L$set$0 ; Length of Common Information Entry
LSCIE1:
.long 0x0 ; CIE Identifier Tag
.byte 0x1 ; CIE Version
.ascii "zR\0" ; CIE Augmentation
.byte 0x1 ; uleb128 0x1; CIE Code Alignment Factor
.byte 0x7c ; sleb128 -4; CIE Data Alignment Factor
.byte 0x41 ; CIE RA Column
.byte 0x1 ; uleb128 0x1; Augmentation size
.byte 0x90 ; FDE Encoding (indirect pcrel)
.byte 0xc ; DW_CFA_def_cfa
.byte 0x1 ; uleb128 0x1
.byte 0x0 ; uleb128 0x0
.align LOG2_GPR_BYTES
LECIE1:
.globl _ffi_call_DARWIN.eh
_ffi_call_DARWIN.eh:
LSFDE1:
.set L$set$1,LEFDE1-LASFDE1
.long L$set$1 ; FDE Length
LASFDE1:
.long LASFDE1-EH_frame1 ; FDE CIE offset
.g_long LLFB0$non_lazy_ptr-. ; FDE initial location
.set L$set$3,LFE1-LFB0
.g_long L$set$3 ; FDE address range
.byte 0x0 ; uleb128 0x0; Augmentation size
.byte 0x4 ; DW_CFA_advance_loc4
.set L$set$4,LCFI0-LFB1
.long L$set$4
.byte 0xd ; DW_CFA_def_cfa_register
.byte 0x08 ; uleb128 0x08
.byte 0x4 ; DW_CFA_advance_loc4
.set L$set$5,LCFI1-LCFI0
.long L$set$5
.byte 0x11 ; DW_CFA_offset_extended_sf
.byte 0x41 ; uleb128 0x41
.byte 0x7e ; sleb128 -2
.byte 0x9f ; DW_CFA_offset, column 0x1f
.byte 0x1 ; uleb128 0x1
.byte 0x9e ; DW_CFA_offset, column 0x1e
.byte 0x2 ; uleb128 0x2
.byte 0x9d ; DW_CFA_offset, column 0x1d
.byte 0x3 ; uleb128 0x3
.byte 0x9c ; DW_CFA_offset, column 0x1c
.byte 0x4 ; uleb128 0x4
.byte 0x4 ; DW_CFA_advance_loc4
.set L$set$6,LCFI2-LCFI1
.long L$set$6
.byte 0xd ; DW_CFA_def_cfa_register
.byte 0x1c ; uleb128 0x1c
.align LOG2_GPR_BYTES
LEFDE1:
.data
.align LOG2_GPR_BYTES
LLFB0$non_lazy_ptr:
.g_long LFB0
