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|
/* -----------------------------------------------------------------------
sysv.S - Copyright (c) 2002, 2003, 2004, 2006, 2008 Kaz Kojima
SuperH 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 CYGNUS SOLUTIONS 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>
#ifdef HAVE_MACHINE_ASM_H
#include <machine/asm.h>
#else
/* XXX these lose for some platforms, I'm sure. */
#define CNAME(x) x
#define ENTRY(x) .globl CNAME(x); .type CNAME(x),%function; CNAME(x):
#endif
#if defined(__HITACHI__)
#define STRUCT_VALUE_ADDRESS_WITH_ARG 1
#else
#define STRUCT_VALUE_ADDRESS_WITH_ARG 0
#endif
.text
# r4: ffi_prep_args
# r5: &ecif
# r6: bytes
# r7: flags
# sp+0: rvalue
# sp+4: fn
# This assumes we are using gas.
ENTRY(ffi_call_SYSV)
# Save registers
.LFB1:
mov.l r8,@-r15
.LCFI0:
mov.l r9,@-r15
.LCFI1:
mov.l r10,@-r15
.LCFI2:
mov.l r12,@-r15
.LCFI3:
mov.l r14,@-r15
.LCFI4:
sts.l pr,@-r15
.LCFI5:
mov r15,r14
.LCFI6:
#if defined(__SH4__)
mov r6,r8
mov r7,r9
sub r6,r15
add #-16,r15
mov #~7,r0
and r0,r15
mov r4,r0
jsr @r0
mov r15,r4
mov r9,r1
shlr8 r9
shlr8 r9
shlr8 r9
mov #FFI_TYPE_STRUCT,r2
cmp/eq r2,r9
bf 1f
#if STRUCT_VALUE_ADDRESS_WITH_ARG
mov.l @r15+,r4
bra 2f
mov #5,r2
#else
mov.l @r15+,r10
#endif
1:
mov #4,r2
2:
mov #4,r3
L_pass:
cmp/pl r8
bf L_call_it
mov r1,r0
and #3,r0
L_pass_d:
cmp/eq #FFI_TYPE_DOUBLE,r0
bf L_pass_f
mov r3,r0
and #1,r0
tst r0,r0
bt 1f
add #1,r3
1:
mov #12,r0
cmp/hs r0,r3
bt/s 3f
shlr2 r1
bsr L_pop_d
nop
3:
add #2,r3
bra L_pass
add #-8,r8
L_pop_d:
mov r3,r0
add r0,r0
add r3,r0
add #-12,r0
braf r0
nop
#ifdef __LITTLE_ENDIAN__
fmov.s @r15+,fr5
rts
fmov.s @r15+,fr4
fmov.s @r15+,fr7
rts
fmov.s @r15+,fr6
fmov.s @r15+,fr9
rts
fmov.s @r15+,fr8
fmov.s @r15+,fr11
rts
fmov.s @r15+,fr10
#else
fmov.s @r15+,fr4
rts
fmov.s @r15+,fr5
fmov.s @r15+,fr6
rts
fmov.s @r15+,fr7
fmov.s @r15+,fr8
rts
fmov.s @r15+,fr9
fmov.s @r15+,fr10
rts
fmov.s @r15+,fr11
#endif
L_pass_f:
cmp/eq #FFI_TYPE_FLOAT,r0
bf L_pass_i
mov #12,r0
cmp/hs r0,r3
bt/s 2f
shlr2 r1
bsr L_pop_f
nop
2:
add #1,r3
bra L_pass
add #-4,r8
L_pop_f:
mov r3,r0
shll2 r0
add #-16,r0
braf r0
nop
#ifdef __LITTLE_ENDIAN__
rts
fmov.s @r15+,fr5
rts
fmov.s @r15+,fr4
rts
fmov.s @r15+,fr7
rts
fmov.s @r15+,fr6
rts
fmov.s @r15+,fr9
rts
fmov.s @r15+,fr8
rts
fmov.s @r15+,fr11
rts
fmov.s @r15+,fr10
#else
rts
fmov.s @r15+,fr4
rts
fmov.s @r15+,fr5
rts
fmov.s @r15+,fr6
rts
fmov.s @r15+,fr7
rts
fmov.s @r15+,fr8
rts
fmov.s @r15+,fr9
rts
fmov.s @r15+,fr10
rts
fmov.s @r15+,fr11
#endif
L_pass_i:
cmp/eq #FFI_TYPE_INT,r0
bf L_call_it
mov #8,r0
cmp/hs r0,r2
bt/s 2f
shlr2 r1
bsr L_pop_i
nop
2:
add #1,r2
bra L_pass
add #-4,r8
L_pop_i:
mov r2,r0
shll2 r0
add #-16,r0
braf r0
nop
rts
mov.l @r15+,r4
rts
mov.l @r15+,r5
rts
mov.l @r15+,r6
rts
mov.l @r15+,r7
L_call_it:
# call function
#if (! STRUCT_VALUE_ADDRESS_WITH_ARG)
mov r10, r2
#endif
mov.l @(28,r14),r1
jsr @r1
nop
L_ret_d:
mov #FFI_TYPE_DOUBLE,r2
cmp/eq r2,r9
bf L_ret_ll
mov.l @(24,r14),r1
#ifdef __LITTLE_ENDIAN__
fmov.s fr1,@r1
add #4,r1
bra L_epilogue
fmov.s fr0,@r1
#else
fmov.s fr0,@r1
add #4,r1
bra L_epilogue
fmov.s fr1,@r1
#endif
L_ret_ll:
mov #FFI_TYPE_SINT64,r2
cmp/eq r2,r9
bt/s 1f
mov #FFI_TYPE_UINT64,r2
cmp/eq r2,r9
bf L_ret_f
1:
mov.l @(24,r14),r2
mov.l r0,@r2
bra L_epilogue
mov.l r1,@(4,r2)
L_ret_f:
mov #FFI_TYPE_FLOAT,r2
cmp/eq r2,r9
bf L_ret_i
mov.l @(24,r14),r1
bra L_epilogue
fmov.s fr0,@r1
L_ret_i:
mov #FFI_TYPE_INT,r2
cmp/eq r2,r9
bf L_epilogue
mov.l @(24,r14),r1
bra L_epilogue
mov.l r0,@r1
L_epilogue:
# Remove the space we pushed for the args
mov r14,r15
lds.l @r15+,pr
mov.l @r15+,r14
mov.l @r15+,r12
mov.l @r15+,r10
mov.l @r15+,r9
rts
mov.l @r15+,r8
#else
mov r6,r8
mov r7,r9
sub r6,r15
add #-16,r15
mov #~7,r0
and r0,r15
mov r4,r0
jsr @r0
mov r15,r4
mov r9,r3
shlr8 r9
shlr8 r9
shlr8 r9
mov #FFI_TYPE_STRUCT,r2
cmp/eq r2,r9
bf 1f
#if STRUCT_VALUE_ADDRESS_WITH_ARG
mov.l @r15+,r4
bra 2f
mov #5,r2
#else
mov.l @r15+,r10
#endif
1:
mov #4,r2
2:
L_pass:
cmp/pl r8
bf L_call_it
mov r3,r0
and #3,r0
L_pass_d:
cmp/eq #FFI_TYPE_DOUBLE,r0
bf L_pass_i
mov r15,r0
and #7,r0
tst r0,r0
bt 1f
add #4,r15
1:
mov #8,r0
cmp/hs r0,r2
bt/s 2f
shlr2 r3
bsr L_pop_d
nop
2:
add #2,r2
bra L_pass
add #-8,r8
L_pop_d:
mov r2,r0
add r0,r0
add r2,r0
add #-12,r0
add r0,r0
braf r0
nop
mov.l @r15+,r4
rts
mov.l @r15+,r5
mov.l @r15+,r5
rts
mov.l @r15+,r6
mov.l @r15+,r6
rts
mov.l @r15+,r7
rts
mov.l @r15+,r7
L_pass_i:
cmp/eq #FFI_TYPE_INT,r0
bf L_call_it
mov #8,r0
cmp/hs r0,r2
bt/s 2f
shlr2 r3
bsr L_pop_i
nop
2:
add #1,r2
bra L_pass
add #-4,r8
L_pop_i:
mov r2,r0
shll2 r0
add #-16,r0
braf r0
nop
rts
mov.l @r15+,r4
rts
mov.l @r15+,r5
rts
mov.l @r15+,r6
rts
mov.l @r15+,r7
L_call_it:
# call function
#if (! STRUCT_VALUE_ADDRESS_WITH_ARG)
mov r10, r2
#endif
mov.l @(28,r14),r1
jsr @r1
nop
L_ret_d:
mov #FFI_TYPE_DOUBLE,r2
cmp/eq r2,r9
bf L_ret_ll
mov.l @(24,r14),r2
mov.l r0,@r2
bra L_epilogue
mov.l r1,@(4,r2)
L_ret_ll:
mov #FFI_TYPE_SINT64,r2
cmp/eq r2,r9
bt/s 1f
mov #FFI_TYPE_UINT64,r2
cmp/eq r2,r9
bf L_ret_i
1:
mov.l @(24,r14),r2
mov.l r0,@r2
bra L_epilogue
mov.l r1,@(4,r2)
L_ret_i:
mov #FFI_TYPE_FLOAT,r2
cmp/eq r2,r9
bt 1f
mov #FFI_TYPE_INT,r2
cmp/eq r2,r9
bf L_epilogue
1:
mov.l @(24,r14),r1
bra L_epilogue
mov.l r0,@r1
L_epilogue:
# Remove the space we pushed for the args
mov r14,r15
lds.l @r15+,pr
mov.l @r15+,r14
mov.l @r15+,r12
mov.l @r15+,r10
mov.l @r15+,r9
rts
mov.l @r15+,r8
#endif
.LFE1:
.ffi_call_SYSV_end:
.size CNAME(ffi_call_SYSV),.ffi_call_SYSV_end-CNAME(ffi_call_SYSV)
.globl ffi_closure_helper_SYSV
ENTRY(ffi_closure_SYSV)
.LFB2:
mov.l r7,@-r15
.LCFI7:
mov.l r6,@-r15
.LCFI8:
mov.l r5,@-r15
.LCFI9:
mov.l r4,@-r15
.LCFIA:
mov.l r14,@-r15
.LCFIB:
sts.l pr,@-r15
/* Stack layout:
xx bytes (on stack parameters)
16 bytes (register parameters)
4 bytes (saved frame pointer)
4 bytes (saved return address)
32 bytes (floating register parameters, SH-4 only)
8 bytes (result)
4 bytes (pad)
4 bytes (5th arg)
<- new stack pointer
*/
.LCFIC:
#if defined(__SH4__)
add #-48,r15
#else
add #-16,r15
#endif
.LCFID:
mov r15,r14
.LCFIE:
#if defined(__SH4__)
mov r14,r1
add #48,r1
#ifdef __LITTLE_ENDIAN__
fmov.s fr10,@-r1
fmov.s fr11,@-r1
fmov.s fr8,@-r1
fmov.s fr9,@-r1
fmov.s fr6,@-r1
fmov.s fr7,@-r1
fmov.s fr4,@-r1
fmov.s fr5,@-r1
#else
fmov.s fr11,@-r1
fmov.s fr10,@-r1
fmov.s fr9,@-r1
fmov.s fr8,@-r1
fmov.s fr7,@-r1
fmov.s fr6,@-r1
fmov.s fr5,@-r1
fmov.s fr4,@-r1
#endif
mov r1,r7
mov r14,r6
add #56,r6
#else
mov r14,r6
add #24,r6
#endif
bt/s 10f
mov r2, r5
mov r14,r1
add #8,r1
mov r1,r5
10:
mov r14,r1
#if defined(__SH4__)
add #72,r1
#else
add #40,r1
#endif
mov.l r1,@r14
#ifdef PIC
mov.l L_got,r1
mova L_got,r0
add r0,r1
mov.l L_helper,r0
add r1,r0
#else
mov.l L_helper,r0
#endif
jsr @r0
mov r3,r4
shll r0
mov r0,r1
mova L_table,r0
add r1,r0
mov.w @r0,r0
mov r14,r2
braf r0
add #8,r2
0:
.align 2
#ifdef PIC
L_got:
.long _GLOBAL_OFFSET_TABLE_
L_helper:
.long ffi_closure_helper_SYSV@GOTOFF
#else
L_helper:
.long ffi_closure_helper_SYSV
#endif
L_table:
.short L_case_v - 0b /* FFI_TYPE_VOID */
.short L_case_i - 0b /* FFI_TYPE_INT */
#if defined(__SH4__)
.short L_case_f - 0b /* FFI_TYPE_FLOAT */
.short L_case_d - 0b /* FFI_TYPE_DOUBLE */
.short L_case_d - 0b /* FFI_TYPE_LONGDOUBLE */
#else
.short L_case_i - 0b /* FFI_TYPE_FLOAT */
.short L_case_ll - 0b /* FFI_TYPE_DOUBLE */
.short L_case_ll - 0b /* FFI_TYPE_LONGDOUBLE */
#endif
.short L_case_uq - 0b /* FFI_TYPE_UINT8 */
.short L_case_q - 0b /* FFI_TYPE_SINT8 */
.short L_case_uh - 0b /* FFI_TYPE_UINT16 */
.short L_case_h - 0b /* FFI_TYPE_SINT16 */
.short L_case_i - 0b /* FFI_TYPE_UINT32 */
.short L_case_i - 0b /* FFI_TYPE_SINT32 */
.short L_case_ll - 0b /* FFI_TYPE_UINT64 */
.short L_case_ll - 0b /* FFI_TYPE_SINT64 */
.short L_case_v - 0b /* FFI_TYPE_STRUCT */
.short L_case_i - 0b /* FFI_TYPE_POINTER */
#if defined(__SH4__)
L_case_d:
#ifdef __LITTLE_ENDIAN__
fmov.s @r2+,fr1
bra L_case_v
fmov.s @r2,fr0
#else
fmov.s @r2+,fr0
bra L_case_v
fmov.s @r2,fr1
#endif
L_case_f:
bra L_case_v
fmov.s @r2,fr0
#endif
L_case_ll:
mov.l @r2+,r0
bra L_case_v
mov.l @r2,r1
L_case_i:
bra L_case_v
mov.l @r2,r0
L_case_q:
#ifdef __LITTLE_ENDIAN__
#else
add #3,r2
#endif
bra L_case_v
mov.b @r2,r0
L_case_uq:
#ifdef __LITTLE_ENDIAN__
#else
add #3,r2
#endif
mov.b @r2,r0
bra L_case_v
extu.b r0,r0
L_case_h:
#ifdef __LITTLE_ENDIAN__
#else
add #2,r2
#endif
bra L_case_v
mov.w @r2,r0
L_case_uh:
#ifdef __LITTLE_ENDIAN__
#else
add #2,r2
#endif
mov.w @r2,r0
extu.w r0,r0
/* fall through */
L_case_v:
#if defined(__SH4__)
add #48,r15
#else
add #16,r15
#endif
lds.l @r15+,pr
mov.l @r15+,r14
rts
add #16,r15
.LFE2:
.ffi_closure_SYSV_end:
.size CNAME(ffi_closure_SYSV),.ffi_closure_SYSV_end-CNAME(ffi_closure_SYSV)
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif
.section ".eh_frame","aw",@progbits
__FRAME_BEGIN__:
.4byte .LECIE1-.LSCIE1 /* Length of Common Information Entry */
.LSCIE1:
.4byte 0x0 /* CIE Identifier Tag */
.byte 0x1 /* CIE Version */
#ifdef PIC
.ascii "zR\0" /* CIE Augmentation */
#else
.byte 0x0 /* CIE Augmentation */
#endif
.byte 0x1 /* uleb128 0x1; CIE Code Alignment Factor */
.byte 0x7c /* sleb128 -4; CIE Data Alignment Factor */
.byte 0x11 /* CIE RA Column */
#ifdef PIC
.uleb128 0x1 /* Augmentation size */
.byte 0x10 /* FDE Encoding (pcrel) */
#endif
.byte 0xc /* DW_CFA_def_cfa */
.byte 0xf /* uleb128 0xf */
.byte 0x0 /* uleb128 0x0 */
.align 2
.LECIE1:
.LSFDE1:
.4byte .LEFDE1-.LASFDE1 /* FDE Length */
.LASFDE1:
.4byte .LASFDE1-__FRAME_BEGIN__ /* FDE CIE offset */
#ifdef PIC
.4byte .LFB1-. /* FDE initial location */
#else
.4byte .LFB1 /* FDE initial location */
#endif
.4byte .LFE1-.LFB1 /* FDE address range */
#ifdef PIC
.uleb128 0x0 /* Augmentation size */
#endif
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI0-.LFB1
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x4 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI1-.LCFI0
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x8 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI2-.LCFI1
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0xc /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI3-.LCFI2
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x10 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI4-.LCFI3
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x14 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI5-.LCFI4
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x18 /* uleb128 0x4 */
.byte 0x91 /* DW_CFA_offset, column 0x11 */
.byte 0x6 /* uleb128 0x6 */
.byte 0x8e /* DW_CFA_offset, column 0xe */
.byte 0x5 /* uleb128 0x5 */
.byte 0x8c /* DW_CFA_offset, column 0xc */
.byte 0x4 /* uleb128 0x4 */
.byte 0x8a /* DW_CFA_offset, column 0xa */
.byte 0x3 /* uleb128 0x3 */
.byte 0x89 /* DW_CFA_offset, column 0x9 */
.byte 0x2 /* uleb128 0x2 */
.byte 0x88 /* DW_CFA_offset, column 0x8 */
.byte 0x1 /* uleb128 0x1 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI6-.LCFI5
.byte 0xd /* DW_CFA_def_cfa_register */
.byte 0xe /* uleb128 0xe */
.align 2
.LEFDE1:
.LSFDE3:
.4byte .LEFDE3-.LASFDE3 /* FDE Length */
.LASFDE3:
.4byte .LASFDE3-__FRAME_BEGIN__ /* FDE CIE offset */
#ifdef PIC
.4byte .LFB2-. /* FDE initial location */
#else
.4byte .LFB2 /* FDE initial location */
#endif
.4byte .LFE2-.LFB2 /* FDE address range */
#ifdef PIC
.uleb128 0x0 /* Augmentation size */
#endif
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI7-.LFB2
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x4 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI8-.LCFI7
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x8 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI9-.LCFI8
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0xc /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFIA-.LCFI9
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x10 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFIB-.LCFIA
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x14 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFIC-.LCFIB
.byte 0xe /* DW_CFA_def_cfa_offset */
.byte 0x18 /* uleb128 0x4 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFID-.LCFIC
.byte 0xe /* DW_CFA_def_cfa_offset */
#if defined(__SH4__)
.byte 24+48 /* uleb128 24+48 */
#else
.byte 24+16 /* uleb128 24+16 */
#endif
.byte 0x91 /* DW_CFA_offset, column 0x11 */
.byte 0x6 /* uleb128 0x6 */
.byte 0x8e /* DW_CFA_offset, column 0xe */
.byte 0x5 /* uleb128 0x5 */
.byte 0x84 /* DW_CFA_offset, column 0x4 */
.byte 0x4 /* uleb128 0x4 */
.byte 0x85 /* DW_CFA_offset, column 0x5 */
.byte 0x3 /* uleb128 0x3 */
.byte 0x86 /* DW_CFA_offset, column 0x6 */
.byte 0x2 /* uleb128 0x2 */
.byte 0x87 /* DW_CFA_offset, column 0x7 */
.byte 0x1 /* uleb128 0x1 */
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFIE-.LCFID
.byte 0xd /* DW_CFA_def_cfa_register */
.byte 0xe /* uleb128 0xe */
.align 2
.LEFDE3:
|
