/* -----------------------------------------------------------------------
osf.S - Copyright (c) 1998, 2001, 2007, 2008 Red Hat
Alpha/OSF Foreign Function Interface
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 AUTHORS OR COPYRIGHT
HOLDERS 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
#include <fficonfig.h>
#include <ffi.h>
.arch ev6
.text
/* ffi_call_osf (void *args, unsigned long bytes, unsigned flags,
void *raddr, void (*fnaddr)(void));
Bit o trickiness here -- ARGS+BYTES is the base of the stack frame
for this function. This has been allocated by ffi_call. We also
deallocate some of the stack that has been alloca'd. */
.align 3
.globl ffi_call_osf
.ent ffi_call_osf
FFI_HIDDEN(ffi_call_osf)
ffi_call_osf:
.frame $15, 32, $26, 0
.mask 0x4008000, -32
$LFB1:
addq $16,$17,$1
mov $16, $30
stq $26, 0($1)
stq $15, 8($1)
stq $18, 16($1)
mov $1, $15
$LCFI1:
.prologue 0
stq $19, 24($1)
mov $20, $27
# Load up all of the (potential) argument registers.
ldq $16, 0($30)
ldt $f16, 0($30)
ldt $f17, 8($30)
ldq $17, 8($30)
ldt $f18, 16($30)
ldq $18, 16($30)
ldt $f19, 24($30)
ldq $19, 24($30)
ldt $f20, 32($30)
ldq $20, 32($30)
ldt $f21, 40($30)
ldq $21, 40($30)
# Deallocate the register argument area.
lda $30, 48($30)
jsr $26, ($27), 0
ldgp $29, 0($26)
# If the return value pointer is NULL, assume no return value.
ldq $19, 24($15)
ldq $18, 16($15)
ldq $26, 0($15)
$LCFI2:
beq $19, $noretval
# Store the return value out in the proper type.
cmpeq $18, FFI_TYPE_INT, $1
bne $1, $retint
cmpeq $18, FFI_TYPE_FLOAT, $2
bne $2, $retfloat
cmpeq $18, FFI_TYPE_DOUBLE, $3
bne $3, $retdouble
.align 3
$noretval:
ldq $15, 8($15)
ret
.align 4
$retint:
stq $0, 0($19)
nop
ldq $15, 8($15)
ret
.align 4
$retfloat:
sts $f0, 0($19)
nop
ldq $15, 8($15)
ret
.align 4
$retdouble:
stt $f0, 0($19)
nop
ldq $15, 8($15)
ret
$LFE1:
.end ffi_call_osf
/* ffi_closure_osf(...)
Receives the closure argument in $1. */
.align 3
.globl ffi_closure_osf
.ent ffi_closure_osf
FFI_HIDDEN(ffi_closure_osf)
ffi_closure_osf:
.frame $30, 16*8, $26, 0
.mask 0x4000000, -16*8
$LFB2:
ldgp $29, 0($27)
subq $30, 16*8, $30
$LCFI5:
stq $26, 0($30)
$LCFI6:
.prologue 1
# Store all of the potential argument registers in va_list format.
stt $f16, 4*8($30)
stt $f17, 5*8($30)
stt $f18, 6*8($30)
stt $f19, 7*8($30)
stt $f20, 8*8($30)
stt $f21, 9*8($30)
stq $16, 10*8($30)
stq $17, 11*8($30)
stq $18, 12*8($30)
stq $19, 13*8($30)
stq $20, 14*8($30)
stq $21, 15*8($30)
# Call ffi_closure_osf_inner to do the bulk of the work.
mov $1, $16
lda $17, 2*8($30)
lda $18, 10*8($30)
jsr $26, ffi_closure_osf_inner
ldgp $29, 0($26)
ldq $26, 0($30)
# Load up the return value in the proper type.
lda $1, $load_table
s4addq $0, $1, $1
ldl $1, 0($1)
addq $1, $29, $1
jmp $31, ($1), $load_32
.align 4
$load_none:
addq $30, 16*8, $30
ret
.align 4
$load_float:
lds $f0, 16($30)
nop
addq $30, 16*8, $30
ret
.align 4
$load_double:
ldt $f0, 16($30)
nop
addq $30, 16*8, $30
ret
.align 4
$load_u8:
#ifdef __alpha_bwx__
ldbu $0, 16($30)
nop
#else
ldq $0, 16($30)
and $0, 255, $0
#endif
addq $30, 16*8, $30
ret
.align 4
$load_s8:
#ifdef __alpha_bwx__
ldbu $0, 16($30)
sextb $0, $0
#else
ldq $0, 16($30)
sll $0, 56, $0
sra $0, 56, $0
#endif
addq $30, 16*8, $30
ret
.align 4
$load_u16:
#ifdef __alpha_bwx__
ldwu $0, 16($30)
nop
#else
ldq $0, 16($30)
zapnot $0, 3, $0
#endif
addq $30, 16*8, $30
ret
.align 4
$load_s16:
#ifdef __alpha_bwx__
ldwu $0, 16($30)
sextw $0, $0
#else
ldq $0, 16($30)
sll $0, 48, $0
sra $0, 48, $0
#endif
addq $30, 16*8, $30
ret
.align 4
$load_32:
ldl $0, 16($30)
nop
addq $30, 16*8, $30
ret
.align 4
$load_64:
ldq $0, 16($30)
nop
addq $30, 16*8, $30
ret
$LFE2:
.end ffi_closure_osf
#ifdef __ELF__
.section .rodata
#else
.rdata
#endif
$load_table:
.gprel32 $load_none # FFI_TYPE_VOID
.gprel32 $load_32 # FFI_TYPE_INT
.gprel32 $load_float # FFI_TYPE_FLOAT
.gprel32 $load_double # FFI_TYPE_DOUBLE
.gprel32 $load_none # FFI_TYPE_LONGDOUBLE
.gprel32 $load_u8 # FFI_TYPE_UINT8
.gprel32 $load_s8 # FFI_TYPE_SINT8
.gprel32 $load_u16 # FFI_TYPE_UINT16
.gprel32 $load_s16 # FFI_TYPE_SINT16
.gprel32 $load_32 # FFI_TYPE_UINT32
.gprel32 $load_32 # FFI_TYPE_SINT32
.gprel32 $load_64 # FFI_TYPE_UINT64
.gprel32 $load_64 # FFI_TYPE_SINT64
.gprel32 $load_none # FFI_TYPE_STRUCT
.gprel32 $load_64 # FFI_TYPE_POINTER
/* Assert that the table above is in sync with ffi.h. */
#if FFI_TYPE_FLOAT != 2 \
|| FFI_TYPE_DOUBLE != 3 \
|| FFI_TYPE_UINT8 != 5 \
|| FFI_TYPE_SINT8 != 6 \
|| FFI_TYPE_UINT16 != 7 \
|| FFI_TYPE_SINT16 != 8 \
|| FFI_TYPE_UINT32 != 9 \
|| FFI_TYPE_SINT32 != 10 \
|| FFI_TYPE_UINT64 != 11 \
|| FFI_TYPE_SINT64 != 12 \
|| FFI_TYPE_STRUCT != 13 \
|| FFI_TYPE_POINTER != 14 \
|| FFI_TYPE_LAST != 14
#error "osf.S out of sync with ffi.h"
#endif
#ifdef __ELF__
.section .eh_frame,EH_FRAME_FLAGS,@progbits
__FRAME_BEGIN__:
.4byte $LECIE1-$LSCIE1 # Length of Common Information Entry
$LSCIE1:
.4byte 0x0 # CIE Identifier Tag
.byte 0x1 # CIE Version
.ascii "zR\0" # CIE Augmentation
.byte 0x1 # uleb128 0x1; CIE Code Alignment Factor
.byte 0x78 # sleb128 -8; CIE Data Alignment Factor
.byte 26 # CIE RA Column
.byte 0x1 # uleb128 0x1; Augmentation size
.byte 0x1b # FDE Encoding (pcrel sdata4)
.byte 0xc # DW_CFA_def_cfa
.byte 30 # uleb128 column 30
.byte 0 # uleb128 offset 0
.align 3
$LECIE1:
$LSFDE1:
.4byte $LEFDE1-$LASFDE1 # FDE Length
$LASFDE1:
.4byte $LASFDE1-__FRAME_BEGIN__ # FDE CIE offset
.4byte $LFB1-. # FDE initial location
.4byte $LFE1-$LFB1 # FDE address range
.byte 0x0 # uleb128 0x0; Augmentation size
.byte 0x4 # DW_CFA_advance_loc4
.4byte $LCFI1-$LFB1
.byte 0x9a # DW_CFA_offset, column 26
.byte 4 # uleb128 4*-8
.byte 0x8f # DW_CFA_offset, column 15
.byte 0x3 # uleb128 3*-8
.byte 0xc # DW_CFA_def_cfa
.byte 15 # uleb128 column 15
.byte 32 # uleb128 offset 32
.byte 0x4 # DW_CFA_advance_loc4
.4byte $LCFI2-$LCFI1
.byte 0xda # DW_CFA_restore, column 26
.align 3
$LEFDE1:
$LSFDE3:
.4byte $LEFDE3-$LASFDE3 # FDE Length
$LASFDE3:
.4byte $LASFDE3-__FRAME_BEGIN__ # FDE CIE offset
.4byte $LFB2-. # FDE initial location
.4byte $LFE2-$LFB2 # FDE address range
.byte 0x0 # uleb128 0x0; Augmentation size
.byte 0x4 # DW_CFA_advance_loc4
.4byte $LCFI5-$LFB2
.byte 0xe # DW_CFA_def_cfa_offset
.byte 0x80,0x1 # uleb128 128
.byte 0x4 # DW_CFA_advance_loc4
.4byte $LCFI6-$LCFI5
.byte 0x9a # DW_CFA_offset, column 26
.byte 16 # uleb128 offset 16*-8
.align 3
$LEFDE3:
#ifdef __linux__
.section .note.GNU-stack,"",@progbits
#endif
#endif
