/* ———————————————————————–
unix.S - Copyright (c) 1998, 2008 Red Hat, Inc.
Copyright (c) 2000 Hewlett Packard Company
IA64/unix Foreign Function Interface
Primary author: Hans Boehm, HP Labs
Loosely modeled on Cygnus code for other platforms.
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 “ia64_flags.h”
.pred.safe_across_calls p1-p5,p16-p63
.text /* HPUX assembler needs to see these symbols, otherwise compilation
fails */
ifdef __hpux
.global memcpy .global ffi_closure_unix_inner
endif
/* int ffi_call_unix (struct ia64_args *stack, PTR64 rvalue,
void (*fn)(void), int flags);
*/
.align 16
.global ffi_call_unix
.proc ffi_call_unix
ffi_call_unix:
.prologue /* Bit o trickiness. We actually share a stack frame with ffi_call. Rely on the fact that ffi_call uses a vframe and don't bother tracking one here at all. */ .fframe 0 .save ar.pfs, r36 // loc0 alloc loc0 = ar.pfs, 4, 3, 8, 0 .save rp, loc1 mov loc1 = b0 .body add r16 = 16, in0 mov loc2 = gp mov r8 = in1 ;; /* Load up all of the argument registers. */ ldf.fill f8 = [in0], 32 ldf.fill f9 = [r16], 32 ;; ldf.fill f10 = [in0], 32 ldf.fill f11 = [r16], 32 ;; ldf.fill f12 = [in0], 32 ldf.fill f13 = [r16], 32 ;; ldf.fill f14 = [in0], 32 ldf.fill f15 = [r16], 24 ;; ld8 out0 = [in0], 16 ld8 out1 = [r16], 16 ;; ld8 out2 = [in0], 16 ld8 out3 = [r16], 16 ;; ld8 out4 = [in0], 16 ld8 out5 = [r16], 16 ;; ld8 out6 = [in0] ld8 out7 = [r16] ;; /* Deallocate the register save area from the stack frame. */ mov sp = in0 /* Call the target function. */ ld8 r16 = [in2], 8 ;; ld8 gp = [in2] mov b6 = r16 br.call.sptk.many b0 = b6 ;; /* Dispatch to handle return value. */ mov gp = loc2 zxt1 r16 = in3 ;; mov ar.pfs = loc0 addl r18 = @ltoffx(.Lst_table), gp ;; /* default assembler on HP-UX does not support LDXMOV */
ifdef __hpux
ld8 r18 = [r18]
else
ld8.mov r18 = [r18], .Lst_table
endif
mov b0 = loc1 ;; shladd r18 = r16, 3, r18 ;; ld8 r17 = [r18] shr in3 = in3, 8 ;; add r17 = r17, r18 ;; mov b6 = r17 br b6 ;;
.Lst_void:
br.ret.sptk.many b0 ;;
.Lst_uint8:
zxt1 r8 = r8 ;; st8 [in1] = r8 br.ret.sptk.many b0 ;;
.Lst_sint8:
sxt1 r8 = r8 ;; st8 [in1] = r8 br.ret.sptk.many b0 ;;
.Lst_uint16:
zxt2 r8 = r8 ;; st8 [in1] = r8 br.ret.sptk.many b0 ;;
.Lst_sint16:
sxt2 r8 = r8 ;; st8 [in1] = r8 br.ret.sptk.many b0 ;;
.Lst_uint32:
zxt4 r8 = r8 ;; st8 [in1] = r8 br.ret.sptk.many b0 ;;
.Lst_sint32:
sxt4 r8 = r8 ;; st8 [in1] = r8 br.ret.sptk.many b0 ;;
.Lst_int64:
st8 [in1] = r8 br.ret.sptk.many b0 ;;
.Lst_float:
stfs [in1] = f8 br.ret.sptk.many b0 ;;
.Lst_double:
stfd [in1] = f8 br.ret.sptk.many b0 ;;
.Lst_ldouble:
stfe [in1] = f8 br.ret.sptk.many b0 ;;
.Lst_small_struct:
cmp.lt p6, p0 = 8, in3 cmp.lt p7, p0 = 16, in3 cmp.lt p8, p0 = 24, in3 ;; add r16 = 8, sp add r17 = 16, sp add r18 = 24, sp ;; st8 [sp] = r8
(p6) st8 [r16] = r9
mov out0 = in1
(p7) st8 [r17] = r10 (p8) st8 [r18] = r11
mov out1 = sp mov out2 = in3 ;; // ia64 software calling convention requires // top 16 bytes of stack to be scratch space // PLT resolver uses that scratch space at // 'memcpy' symbol reolution time add sp = -16, sp br.call.sptk.many b0 = memcpy# ;; mov ar.pfs = loc0 mov b0 = loc1 mov gp = loc2 br.ret.sptk.many b0
.Lst_hfa_float:
add r16 = 4, in1 cmp.lt p6, p0 = 4, in3 ;; stfs [in1] = f8, 8
(p6) stfs [r16] = f9, 8
cmp.lt p7, p0 = 8, in3 cmp.lt p8, p0 = 12, in3 ;;
(p7) stfs [in1] = f10, 8 (p8) stfs [r16] = f11, 8
cmp.lt p9, p0 = 16, in3 cmp.lt p10, p0 = 20, in3 ;;
(p9) stfs [in1] = f12, 8 (p10) stfs [r16] = f13, 8
cmp.lt p6, p0 = 24, in3 cmp.lt p7, p0 = 28, in3 ;;
(p6) stfs [in1] = f14 (p7) stfs [r16] = f15
br.ret.sptk.many b0 ;;
.Lst_hfa_double:
add r16 = 8, in1 cmp.lt p6, p0 = 8, in3 ;; stfd [in1] = f8, 16
(p6) stfd [r16] = f9, 16
cmp.lt p7, p0 = 16, in3 cmp.lt p8, p0 = 24, in3 ;;
(p7) stfd [in1] = f10, 16 (p8) stfd [r16] = f11, 16
cmp.lt p9, p0 = 32, in3 cmp.lt p10, p0 = 40, in3 ;;
(p9) stfd [in1] = f12, 16 (p10) stfd [r16] = f13, 16
cmp.lt p6, p0 = 48, in3 cmp.lt p7, p0 = 56, in3 ;;
(p6) stfd [in1] = f14 (p7) stfd [r16] = f15
br.ret.sptk.many b0 ;;
.Lst_hfa_ldouble:
add r16 = 16, in1 cmp.lt p6, p0 = 16, in3 ;; stfe [in1] = f8, 32
(p6) stfe [r16] = f9, 32
cmp.lt p7, p0 = 32, in3 cmp.lt p8, p0 = 48, in3 ;;
(p7) stfe [in1] = f10, 32 (p8) stfe [r16] = f11, 32
cmp.lt p9, p0 = 64, in3 cmp.lt p10, p0 = 80, in3 ;;
(p9) stfe [in1] = f12, 32 (p10) stfe [r16] = f13, 32
cmp.lt p6, p0 = 96, in3 cmp.lt p7, p0 = 112, in3 ;;
(p6) stfe [in1] = f14 (p7) stfe [r16] = f15
br.ret.sptk.many b0 ;; .endp ffi_call_unix .align 16 .global ffi_closure_unix .proc ffi_closure_unix
define FRAME_SIZE (8*16 + 8*8 + 8*16)
ffi_closure_unix:
.prologue .save ar.pfs, r40 // loc0 alloc loc0 = ar.pfs, 8, 4, 4, 0 .fframe FRAME_SIZE add r12 = -FRAME_SIZE, r12 .save rp, loc1 mov loc1 = b0 .save ar.unat, loc2 mov loc2 = ar.unat .body /* Retrieve closure pointer and real gp. */
ifdef _ILP32
addp4 out0 = 0, gp addp4 gp = 16, gp
else
mov out0 = gp add gp = 16, gp
endif
;; ld8 gp = [gp] /* Spill all of the possible argument registers. */ add r16 = 16 + 8*16, sp add r17 = 16 + 8*16 + 16, sp ;; stf.spill [r16] = f8, 32 stf.spill [r17] = f9, 32 mov loc3 = gp ;; stf.spill [r16] = f10, 32 stf.spill [r17] = f11, 32 ;; stf.spill [r16] = f12, 32 stf.spill [r17] = f13, 32 ;; stf.spill [r16] = f14, 32 stf.spill [r17] = f15, 24 ;; .mem.offset 0, 0 st8.spill [r16] = in0, 16 .mem.offset 8, 0 st8.spill [r17] = in1, 16 add out1 = 16 + 8*16, sp ;; .mem.offset 0, 0 st8.spill [r16] = in2, 16 .mem.offset 8, 0 st8.spill [r17] = in3, 16 add out2 = 16, sp ;; .mem.offset 0, 0 st8.spill [r16] = in4, 16 .mem.offset 8, 0 st8.spill [r17] = in5, 16 mov out3 = r8 ;; .mem.offset 0, 0 st8.spill [r16] = in6 .mem.offset 8, 0 st8.spill [r17] = in7 /* Invoke ffi_closure_unix_inner for the hard work. */ br.call.sptk.many b0 = ffi_closure_unix_inner ;; /* Dispatch to handle return value. */ mov gp = loc3 zxt1 r16 = r8 ;; addl r18 = @ltoffx(.Lld_table), gp mov ar.pfs = loc0 ;;
ifdef __hpux
ld8 r18 = [r18]
else
ld8.mov r18 = [r18], .Lst_table
endif
mov b0 = loc1 ;; shladd r18 = r16, 3, r18 mov ar.unat = loc2 ;; ld8 r17 = [r18] shr r8 = r8, 8 ;; add r17 = r17, r18 add r16 = 16, sp ;; mov b6 = r17 br b6 ;; .label_state 1
.Lld_void:
.restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_int:
.body .copy_state 1 ld8 r8 = [r16] .restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_float:
.body .copy_state 1 ldfs f8 = [r16] .restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_double:
.body .copy_state 1 ldfd f8 = [r16] .restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_ldouble:
.body .copy_state 1 ldfe f8 = [r16] .restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_small_struct:
.body .copy_state 1 add r17 = 8, r16 cmp.lt p6, p0 = 8, r8 cmp.lt p7, p0 = 16, r8 cmp.lt p8, p0 = 24, r8 ;; ld8 r8 = [r16], 16
(p6) ld8 r9 = [r17], 16
;;
(p7) ld8 r10 = [r16] (p8) ld8 r11 = [r17]
.restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_hfa_float:
.body .copy_state 1 add r17 = 4, r16 cmp.lt p6, p0 = 4, r8 ;; ldfs f8 = [r16], 8
(p6) ldfs f9 = [r17], 8
cmp.lt p7, p0 = 8, r8 cmp.lt p8, p0 = 12, r8 ;;
(p7) ldfs f10 = [r16], 8 (p8) ldfs f11 = [r17], 8
cmp.lt p9, p0 = 16, r8 cmp.lt p10, p0 = 20, r8 ;;
(p9) ldfs f12 = [r16], 8 (p10) ldfs f13 = [r17], 8
cmp.lt p6, p0 = 24, r8 cmp.lt p7, p0 = 28, r8 ;;
(p6) ldfs f14 = [r16] (p7) ldfs f15 = [r17]
.restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_hfa_double:
.body .copy_state 1 add r17 = 8, r16 cmp.lt p6, p0 = 8, r8 ;; ldfd f8 = [r16], 16
(p6) ldfd f9 = [r17], 16
cmp.lt p7, p0 = 16, r8 cmp.lt p8, p0 = 24, r8 ;;
(p7) ldfd f10 = [r16], 16 (p8) ldfd f11 = [r17], 16
cmp.lt p9, p0 = 32, r8 cmp.lt p10, p0 = 40, r8 ;;
(p9) ldfd f12 = [r16], 16 (p10) ldfd f13 = [r17], 16
cmp.lt p6, p0 = 48, r8 cmp.lt p7, p0 = 56, r8 ;;
(p6) ldfd f14 = [r16] (p7) ldfd f15 = [r17]
.restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;;
.Lld_hfa_ldouble:
.body .copy_state 1 add r17 = 16, r16 cmp.lt p6, p0 = 16, r8 ;; ldfe f8 = [r16], 32
(p6) ldfe f9 = [r17], 32
cmp.lt p7, p0 = 32, r8 cmp.lt p8, p0 = 48, r8 ;;
(p7) ldfe f10 = [r16], 32 (p8) ldfe f11 = [r17], 32
cmp.lt p9, p0 = 64, r8 cmp.lt p10, p0 = 80, r8 ;;
(p9) ldfe f12 = [r16], 32 (p10) ldfe f13 = [r17], 32
cmp.lt p6, p0 = 96, r8 cmp.lt p7, p0 = 112, r8 ;;
(p6) ldfe f14 = [r16] (p7) ldfe f15 = [r17]
.restore sp add sp = FRAME_SIZE, sp br.ret.sptk.many b0 ;; .endp ffi_closure_unix
ifdef __hpux
.rodata
else
.section .rodata
endif
.align 8
.Lst_table:
data8 @pcrel(.Lst_void) // FFI_TYPE_VOID data8 @pcrel(.Lst_sint32) // FFI_TYPE_INT data8 @pcrel(.Lst_float) // FFI_TYPE_FLOAT data8 @pcrel(.Lst_double) // FFI_TYPE_DOUBLE data8 @pcrel(.Lst_ldouble) // FFI_TYPE_LONGDOUBLE data8 @pcrel(.Lst_uint8) // FFI_TYPE_UINT8 data8 @pcrel(.Lst_sint8) // FFI_TYPE_SINT8 data8 @pcrel(.Lst_uint16) // FFI_TYPE_UINT16 data8 @pcrel(.Lst_sint16) // FFI_TYPE_SINT16 data8 @pcrel(.Lst_uint32) // FFI_TYPE_UINT32 data8 @pcrel(.Lst_sint32) // FFI_TYPE_SINT32 data8 @pcrel(.Lst_int64) // FFI_TYPE_UINT64 data8 @pcrel(.Lst_int64) // FFI_TYPE_SINT64 data8 @pcrel(.Lst_void) // FFI_TYPE_STRUCT data8 @pcrel(.Lst_int64) // FFI_TYPE_POINTER data8 @pcrel(.Lst_void) // FFI_TYPE_COMPLEX (not implemented) data8 @pcrel(.Lst_small_struct) // FFI_IA64_TYPE_SMALL_STRUCT data8 @pcrel(.Lst_hfa_float) // FFI_IA64_TYPE_HFA_FLOAT data8 @pcrel(.Lst_hfa_double) // FFI_IA64_TYPE_HFA_DOUBLE data8 @pcrel(.Lst_hfa_ldouble) // FFI_IA64_TYPE_HFA_LDOUBLE
.Lld_table:
data8 @pcrel(.Lld_void) // FFI_TYPE_VOID data8 @pcrel(.Lld_int) // FFI_TYPE_INT data8 @pcrel(.Lld_float) // FFI_TYPE_FLOAT data8 @pcrel(.Lld_double) // FFI_TYPE_DOUBLE data8 @pcrel(.Lld_ldouble) // FFI_TYPE_LONGDOUBLE data8 @pcrel(.Lld_int) // FFI_TYPE_UINT8 data8 @pcrel(.Lld_int) // FFI_TYPE_SINT8 data8 @pcrel(.Lld_int) // FFI_TYPE_UINT16 data8 @pcrel(.Lld_int) // FFI_TYPE_SINT16 data8 @pcrel(.Lld_int) // FFI_TYPE_UINT32 data8 @pcrel(.Lld_int) // FFI_TYPE_SINT32 data8 @pcrel(.Lld_int) // FFI_TYPE_UINT64 data8 @pcrel(.Lld_int) // FFI_TYPE_SINT64 data8 @pcrel(.Lld_void) // FFI_TYPE_STRUCT data8 @pcrel(.Lld_int) // FFI_TYPE_POINTER data8 @pcrel(.Lld_void) // FFI_TYPE_COMPLEX (not implemented) data8 @pcrel(.Lld_small_struct) // FFI_IA64_TYPE_SMALL_STRUCT data8 @pcrel(.Lld_hfa_float) // FFI_IA64_TYPE_HFA_FLOAT data8 @pcrel(.Lld_hfa_double) // FFI_IA64_TYPE_HFA_DOUBLE data8 @pcrel(.Lld_hfa_ldouble) // FFI_IA64_TYPE_HFA_LDOUBLE
if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
endif