/* ———————————————————————–
v8.S - Copyright (c) 2013 The Written Word, Inc.
Copyright (c) 1996, 1997, 2003, 2004, 2008 Red Hat, Inc.
SPARC 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> include “internal.h”
ifndef SPARC64
define C2(X, Y) X ## Y define C1(X, Y) C2(X, Y)
ifdef USER_LABEL_PREFIX # define C(Y) C1(USER_LABEL_PREFIX, Y) else # define C(Y) Y endif define L(Y) C1(.L, Y)
.text
ifndef __GNUC__
.align 8 .globl C(ffi_flush_icache) .type C(ffi_flush_icache),#function FFI_HIDDEN(C(ffi_flush_icache))
C(ffi_flush_icache): 1: iflush %o0
iflush %o+8 nop nop nop nop nop retl nop .size C(ffi_flush_icache), . - C(ffi_flush_icache)
endif
if defined(__sun__) && defined(svr4) # define E(INDEX) .align 16 else # define E(INDEX) .align 16; .org 2b + INDEX * 16 endif
.align 8 .globl C(ffi_call_v8) .type C(ffi_call_v8),#function FFI_HIDDEN(C(ffi_call_v8))
C(ffi_call_v8): .LUW0:
! Allocate a stack frame sized by ffi_call. save %sp, %o4, %sp
.LUW1:
mov %i0, %o0 ! copy cif add %sp, 64+32, %o1 ! load args area mov %i2, %o2 ! copy rvalue call C(ffi_prep_args_v8) mov %i3, %o3 ! copy avalue add %sp, 32, %sp ! deallocate prep frame and %o0, SPARC_FLAG_RET_MASK, %l0 ! save return type srl %o0, SPARC_SIZEMASK_SHIFT, %l1 ! save return size ld [%sp+64+4], %o0 ! load all argument registers ld [%sp+64+8], %o1 ld [%sp+64+12], %o2 ld [%sp+64+16], %o3 cmp %l0, SPARC_RET_STRUCT ! struct return needs an unimp 4 ld [%sp+64+20], %o4 be 8f ld [%sp+64+24], %o5 ! Call foreign function call %i1 mov %i5, %g2 ! load static chain
0: call 1f ! load pc in %o7
sll %l0, 4, %l0
1: add %o7, %l0, %o7 ! o7 = 0b + ret_type*16
jmp %o7+(2f-0b) nop ! Note that each entry is 4 insns, enforced by the E macro. .align 16
2: E(SPARC_RET_VOID)
ret restore
E(SPARC_RET_STRUCT)
unimp
E(SPARC_RET_UINT8)
and %o0, 0xff, %o0 st %o0, [%i2] ret restore
E(SPARC_RET_SINT8)
sll %o0, 24, %o0 b 7f sra %o0, 24, %o0
E(SPARC_RET_UINT16)
sll %o0, 16, %o0 b 7f srl %o0, 16, %o0
E(SPARC_RET_SINT16)
sll %o0, 16, %o0 b 7f sra %o0, 16, %o0
E(SPARC_RET_UINT32) 7: st %o0, [%i2]
ret restore
E(SP_V8_RET_CPLX16)
sth %o0, [%i2+2] b 9f srl %o0, 16, %o0
E(SPARC_RET_INT64)
st %o0, [%i2] st %o1, [%i2+4] ret restore
E(SPARC_RET_INT128)
std %o0, [%i2] std %o2, [%i2+8] ret restore
E(SPARC_RET_F_8)
st %f7, [%i2+7*4] nop st %f6, [%i2+6*4] nop
E(SPARC_RET_F_6)
st %f5, [%i2+5*4] nop st %f4, [%i2+4*4] nop
E(SPARC_RET_F_4)
st %f3, [%i2+3*4] nop st %f2, [%i2+2*4] nop
E(SPARC_RET_F_2)
st %f1, [%i2+4] st %f0, [%i2] ret restore
E(SP_V8_RET_CPLX8)
stb %o0, [%i2+1] b 0f srl %o0, 8, %o0
E(SPARC_RET_F_1)
st %f0, [%i2] ret restore .align 8
9: sth %o0, [%i2]
ret restore .align 8
0: stb %o0, [%i2]
ret restore ! Struct returning functions expect and skip the unimp here. ! To make it worse, conforming callees examine the unimp and ! make sure the low 12 bits of the unimp match the size of ! the struct being returned. .align 8
8: call 1f ! load pc in %o7
sll %l1, 2, %l0 ! size * 4
1: sll %l1, 4, %l1 ! size * 16
add %l0, %l1, %l0 ! size * 20 add %o7, %l0, %o7 ! o7 = 8b + size*20 jmp %o7+(2f-8b) mov %i5, %g2 ! load static chain
2:
/* The Sun assembler doesn’t understand .rept 0x1000. */ define rept1 \
call %i1; \ nop; \ unimp (. - 2b) / 20; \ ret; \ restore
define rept16 \
rept1; rept1; rept1; rept1; \ rept1; rept1; rept1; rept1; \ rept1; rept1; rept1; rept1; \ rept1; rept1; rept1; rept1
define rept256 \
rept16; rept16; rept16; rept16; \ rept16; rept16; rept16; rept16; \ rept16; rept16; rept16; rept16; \ rept16; rept16; rept16; rept16 rept256; rept256; rept256; rept256 rept256; rept256; rept256; rept256 rept256; rept256; rept256; rept256 rept256; rept256; rept256; rept256
.LUW2:
.size C(ffi_call_v8),. - C(ffi_call_v8)
/* 16*4 register window + 1*4 struct return + 6*4 args backing store
+ 8*4 return storage + 1*4 alignment. */
define STACKFRAME (16*4 + 4 + 6*4 + 8*4 + 4)
/* ffi_closure_v8(…)
Receives the closure argument in %g2. */
ifdef HAVE_AS_REGISTER_PSEUDO_OP
.register %g2, #scratch
endif
.align 8 .globl C(ffi_go_closure_v8) .type C(ffi_go_closure_v8),#function FFI_HIDDEN(C(ffi_go_closure_v8))
C(ffi_go_closure_v8): .LUW3:
save %sp, -STACKFRAME, %sp
.LUW4:
ld [%g2+4], %o0 ! load cif ld [%g2+8], %o1 ! load fun b 0f mov %g2, %o2 ! load user_data
.LUW5:
.size C(ffi_go_closure_v8), . - C(ffi_go_closure_v8) .align 8 .globl C(ffi_closure_v8) .type C(ffi_closure_v8),#function FFI_HIDDEN(C(ffi_closure_v8))
C(ffi_closure_v8): .LUW6:
save %sp, -STACKFRAME, %sp
.LUW7:
ld [%g2+FFI_TRAMPOLINE_SIZE], %o0 ! load cif ld [%g2+FFI_TRAMPOLINE_SIZE+4], %o1 ! load fun ld [%g2+FFI_TRAMPOLINE_SIZE+8], %o2 ! load user_data
0:
! Store all of the potential argument registers in va_list format. st %i0, [%fp+68+0] st %i1, [%fp+68+4] st %i2, [%fp+68+8] st %i3, [%fp+68+12] st %i4, [%fp+68+16] st %i5, [%fp+68+20] ! Call ffi_closure_sparc_inner to do the bulk of the work. add %fp, -8*4, %o3 call ffi_closure_sparc_inner_v8 add %fp, 64, %o4
0: call 1f
and %o0, SPARC_FLAG_RET_MASK, %o0
1: sll %o0, 4, %o0 ! o0 = o0 * 16
add %o7, %o0, %o7 ! o7 = 0b + o0*16 jmp %o7+(2f-0b) add %fp, -8*4, %i2 ! Note that each entry is 4 insns, enforced by the E macro. .align 16
2: E(SPARC_RET_VOID)
ret restore
E(SPARC_RET_STRUCT)
ld [%i2], %i0 jmp %i7+12 restore
E(SPARC_RET_UINT8)
ldub [%i2+3], %i0 ret restore
E(SPARC_RET_SINT8)
ldsb [%i2+3], %i0 ret restore
E(SPARC_RET_UINT16)
lduh [%i2+2], %i0 ret restore
E(SPARC_RET_SINT16)
ldsh [%i2+2], %i0 ret restore
E(SPARC_RET_UINT32)
ld [%i2], %i0 ret restore
E(SP_V8_RET_CPLX16)
ld [%i2], %i0 ret restore
E(SPARC_RET_INT64)
ldd [%i2], %i0 ret restore
E(SPARC_RET_INT128)
ldd [%i2], %i0 ldd [%i2+8], %i2 ret restore
E(SPARC_RET_F_8)
ld [%i2+7*4], %f7 nop ld [%i2+6*4], %f6 nop
E(SPARC_RET_F_6)
ld [%i2+5*4], %f5 nop ld [%i2+4*4], %f4 nop
E(SPARC_RET_F_4)
ld [%i2+3*4], %f3 nop ld [%i2+2*4], %f2 nop
E(SPARC_RET_F_2)
ldd [%i2], %f0 ret restore
E(SP_V8_RET_CPLX8)
lduh [%i2], %i0 ret restore
E(SPARC_RET_F_1)
ld [%i2], %f0 ret restore
.LUW8:
.size C(ffi_closure_v8), . - C(ffi_closure_v8)
ifdef HAVE_RO_EH_FRAME
.section ".eh_frame",#alloc
else
.section ".eh_frame",#alloc,#write
endif
ifdef HAVE_AS_SPARC_UA_PCREL # define FDE_ADDR(X) %r_disp32(X) else # define FDE_ADDR(X) X endif
.align 4
.LCIE:
.long .LECIE - .LSCIE ! CIE Length
.LSCIE:
.long 0 ! CIE Identifier Tag .byte 1 ! CIE Version .ascii "zR\0" ! CIE Augmentation .byte 4 ! CIE Code Alignment Factor .byte 0x7c ! CIE Data Alignment Factor .byte 15 ! CIE RA Column .byte 1 ! Augmentation size
ifdef HAVE_AS_SPARC_UA_PCREL
.byte 0x1b ! FDE Encoding (pcrel sdata4)
else
.byte 0x50 ! FDE Encoding (aligned absolute)
endif
.byte 0xc, 14, 0 ! DW_CFA_def_cfa, %o6, offset 0 .align 4
.LECIE:
.long .LEFDE1 - .LSFDE1 ! FDE Length
.LSFDE1:
.long .LSFDE1 - .LCIE ! FDE CIE offset .long FDE_ADDR(.LUW0) ! Initial location .long .LUW2 - .LUW0 ! Address range .byte 0 ! Augmentation size .byte 0x40+1 ! DW_CFA_advance_loc 4 .byte 0xd, 30 ! DW_CFA_def_cfa_register, %i6 .byte 0x2d ! DW_CFA_GNU_window_save .byte 0x9, 15, 31 ! DW_CFA_register, %o7, %i7 .align 4
.LEFDE1:
.long .LEFDE2 - .LSFDE2 ! FDE Length
.LSFDE2:
.long .LSFDE2 - .LCIE ! FDE CIE offset .long FDE_ADDR(.LUW3) ! Initial location .long .LUW5 - .LUW3 ! Address range .byte 0 ! Augmentation size .byte 0x40+1 ! DW_CFA_advance_loc 4 .byte 0xd, 30 ! DW_CFA_def_cfa_register, %i6 .byte 0x2d ! DW_CFA_GNU_window_save .byte 0x9, 15, 31 ! DW_CFA_register, %o7, %i7 .align 4
.LEFDE2:
.long .LEFDE3 - .LSFDE3 ! FDE Length
.LSFDE3:
.long .LSFDE3 - .LCIE ! FDE CIE offset .long FDE_ADDR(.LUW6) ! Initial location .long .LUW8 - .LUW6 ! Address range .byte 0 ! Augmentation size .byte 0x40+1 ! DW_CFA_advance_loc 4 .byte 0xd, 30 ! DW_CFA_def_cfa_register, %i6 .byte 0x2d ! DW_CFA_GNU_window_save .byte 0x9, 15, 31 ! DW_CFA_register, %o7, %i7 .align 4
.LEFDE3:
endif /* !SPARC64 */ if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
endif