/* ----------------------------------------------------------------------- v8.S - Copyright (c) 1996, 1997, 2003, 2004 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 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 #include #define STACKFRAME 96 /* Minimum stack framesize for SPARC */ #define ARGS (64+4) /* Offset of register area in frame */ .text .align 8 .globl ffi_call_v8 .globl _ffi_call_v8 ffi_call_v8: _ffi_call_v8: .LLFB1: save %sp, -STACKFRAME, %sp .LLCFI0: sub %sp, %i2, %sp ! alloca() space in stack for frame to set up add %sp, STACKFRAME, %l0 ! %l0 has start of ! frame to set up mov %l0, %o0 ! call routine to set up frame call %i0 mov %i1, %o1 ! (delay) ld [%l0+ARGS], %o0 ! call foreign function ld [%l0+ARGS+4], %o1 ld [%l0+ARGS+8], %o2 ld [%l0+ARGS+12], %o3 ld [%l0+ARGS+16], %o4 ld [%l0+ARGS+20], %o5 call %i5 mov %l0, %sp ! (delay) switch to frame nop ! STRUCT returning functions skip 12 instead of 8 bytes ! If the return value pointer is NULL, assume no return value. tst %i4 bz done nop cmp %i3, FFI_TYPE_INT be,a done st %o0, [%i4] ! (delay) cmp %i3, FFI_TYPE_FLOAT be,a done st %f0, [%i4+0] ! (delay) cmp %i3, FFI_TYPE_SINT64 be longlong cmp %i3, FFI_TYPE_DOUBLE bne done nop st %f0, [%i4+0] st %f1, [%i4+4] done: ret restore longlong: st %o0, [%i4+0] st %o1, [%i4+4] ret restore .LLFE1: .ffi_call_v8_end: .size ffi_call_v8,.ffi_call_v8_end-ffi_call_v8 #undef STACKFRAME #define STACKFRAME 104 /* 16*4 register window + 1*4 struct return + 6*4 args backing store + 3*4 locals */ /* ffi_closure_v8(...) Receives the closure argument in %g2. */ .text .align 8 .globl ffi_closure_v8 ffi_closure_v8: #ifdef HAVE_AS_REGISTER_PSEUDO_OP .register %g2, #scratch #endif .LLFB2: ! Reserve frame space for all arguments in case ! we need to align them on a 8-byte boundary. ld [%g2+FFI_TRAMPOLINE_SIZE], %g1 ld [%g1+4], %g1 sll %g1, 3, %g1 add %g1, STACKFRAME, %g1 ! %g1 == STACKFRAME + 8*nargs neg %g1 save %sp, %g1, %sp .LLCFI1: ! 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. mov %g2, %o0 add %fp, -8, %o1 add %fp, 64, %o2 call ffi_closure_sparc_inner_v8 add %fp, -16, %o3 ! Load up the return value in the proper type. ! See ffi_prep_cif_machdep for the list of cases. cmp %o0, FFI_TYPE_VOID be done1 cmp %o0, FFI_TYPE_INT be integer cmp %o0, FFI_TYPE_FLOAT be,a done1 ld [%fp-8], %f0 cmp %o0, FFI_TYPE_DOUBLE be,a done1 ldd [%fp-8], %f0 #if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE cmp %o0, FFI_TYPE_LONGDOUBLE be done2 #endif cmp %o0, FFI_TYPE_STRUCT be done2 ! FFI_TYPE_SINT64 ! FFI_TYPE_UINT64 ld [%fp-4], %i1 integer: ld [%fp-8], %i0 done1: jmp %i7+8 restore done2: ! Skip 'unimp'. jmp %i7+12 restore .LLFE2: .ffi_closure_v8_end: .size ffi_closure_v8,.ffi_closure_v8_end-ffi_closure_v8 #ifdef SPARC64 #define WS 8 #define nword xword #define uanword uaxword #else #define WS 4 #define nword long #define uanword uaword #endif #ifdef HAVE_RO_EH_FRAME .section ".eh_frame",#alloc #else .section ".eh_frame",#alloc,#write #endif .LLframe1: .uaword .LLECIE1-.LLSCIE1 ! Length of Common Information Entry .LLSCIE1: .uaword 0x0 ! CIE Identifier Tag .byte 0x1 ! CIE Version .ascii "zR\0" ! CIE Augmentation .byte 0x1 ! uleb128 0x1; CIE Code Alignment Factor .byte 0x80-WS ! sleb128 -WS; CIE Data Alignment Factor .byte 0xf ! CIE RA Column .byte 0x1 ! uleb128 0x1; Augmentation size #ifdef HAVE_AS_SPARC_UA_PCREL .byte 0x1b ! FDE Encoding (pcrel sdata4) #else .byte 0x50 ! FDE Encoding (aligned absolute) #endif .byte 0xc ! DW_CFA_def_cfa .byte 0xe ! uleb128 0xe .byte 0x0 ! uleb128 0x0 .align WS .LLECIE1: .LLSFDE1: .uaword .LLEFDE1-.LLASFDE1 ! FDE Length .LLASFDE1: .uaword .LLASFDE1-.LLframe1 ! FDE CIE offset #ifdef HAVE_AS_SPARC_UA_PCREL .uaword %r_disp32(.LLFB1) .uaword .LLFE1-.LLFB1 ! FDE address range #else .align WS .nword .LLFB1 .uanword .LLFE1-.LLFB1 ! FDE address range #endif .byte 0x0 ! uleb128 0x0; Augmentation size .byte 0x4 ! DW_CFA_advance_loc4 .uaword .LLCFI0-.LLFB1 .byte 0xd ! DW_CFA_def_cfa_register .byte 0x1e ! uleb128 0x1e .byte 0x2d ! DW_CFA_GNU_window_save .byte 0x9 ! DW_CFA_register .byte 0xf ! uleb128 0xf .byte 0x1f ! uleb128 0x1f .align WS .LLEFDE1: .LLSFDE2: .uaword .LLEFDE2-.LLASFDE2 ! FDE Length .LLASFDE2: .uaword .LLASFDE2-.LLframe1 ! FDE CIE offset #ifdef HAVE_AS_SPARC_UA_PCREL .uaword %r_disp32(.LLFB2) .uaword .LLFE2-.LLFB2 ! FDE address range #else .align WS .nword .LLFB2 .uanword .LLFE2-.LLFB2 ! FDE address range #endif .byte 0x0 ! uleb128 0x0; Augmentation size .byte 0x4 ! DW_CFA_advance_loc4 .uaword .LLCFI1-.LLFB2 .byte 0xd ! DW_CFA_def_cfa_register .byte 0x1e ! uleb128 0x1e .byte 0x2d ! DW_CFA_GNU_window_save .byte 0x9 ! DW_CFA_register .byte 0xf ! uleb128 0xf .byte 0x1f ! uleb128 0x1f .align WS .LLEFDE2: