Pulled in libffi from gcc trunk.
Fixed build and install for standalone use.
This commit is contained in:
tromey
267
libffi/src/sparc/v8.S
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267
libffi/src/sparc/v8.S
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/* -----------------------------------------------------------------------
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v8.S - Copyright (c) 1996, 1997, 2003, 2004 Red Hat, Inc.
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SPARC Foreign Function Interface
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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``Software''), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#define LIBFFI_ASM
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#include <fficonfig.h>
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#include <ffi.h>
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#define STACKFRAME 96 /* Minimum stack framesize for SPARC */
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#define ARGS (64+4) /* Offset of register area in frame */
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.text
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.align 8
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.globl ffi_call_v8
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.globl _ffi_call_v8
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ffi_call_v8:
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_ffi_call_v8:
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.LLFB1:
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save %sp, -STACKFRAME, %sp
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.LLCFI0:
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sub %sp, %i2, %sp ! alloca() space in stack for frame to set up
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add %sp, STACKFRAME, %l0 ! %l0 has start of
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! frame to set up
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mov %l0, %o0 ! call routine to set up frame
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call %i0
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mov %i1, %o1 ! (delay)
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ld [%l0+ARGS], %o0 ! call foreign function
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ld [%l0+ARGS+4], %o1
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ld [%l0+ARGS+8], %o2
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ld [%l0+ARGS+12], %o3
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ld [%l0+ARGS+16], %o4
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ld [%l0+ARGS+20], %o5
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call %i5
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mov %l0, %sp ! (delay) switch to frame
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nop ! STRUCT returning functions skip 12 instead of 8 bytes
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! If the return value pointer is NULL, assume no return value.
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tst %i4
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bz done
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nop
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cmp %i3, FFI_TYPE_INT
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be,a done
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st %o0, [%i4] ! (delay)
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cmp %i3, FFI_TYPE_FLOAT
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be,a done
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st %f0, [%i4+0] ! (delay)
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cmp %i3, FFI_TYPE_SINT64
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be longlong
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cmp %i3, FFI_TYPE_DOUBLE
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bne done
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nop
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st %f0, [%i4+0]
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st %f1, [%i4+4]
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done:
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ret
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restore
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longlong:
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st %o0, [%i4+0]
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st %o1, [%i4+4]
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ret
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restore
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.LLFE1:
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.ffi_call_v8_end:
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.size ffi_call_v8,.ffi_call_v8_end-ffi_call_v8
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#undef STACKFRAME
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#define STACKFRAME 104 /* 16*4 register window +
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1*4 struct return +
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6*4 args backing store +
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3*4 locals */
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/* ffi_closure_v8(...)
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Receives the closure argument in %g2. */
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.text
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.align 8
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.globl ffi_closure_v8
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ffi_closure_v8:
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#ifdef HAVE_AS_REGISTER_PSEUDO_OP
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.register %g2, #scratch
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#endif
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.LLFB2:
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! Reserve frame space for all arguments in case
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! we need to align them on a 8-byte boundary.
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ld [%g2+FFI_TRAMPOLINE_SIZE], %g1
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ld [%g1+4], %g1
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sll %g1, 3, %g1
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add %g1, STACKFRAME, %g1
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! %g1 == STACKFRAME + 8*nargs
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neg %g1
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save %sp, %g1, %sp
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.LLCFI1:
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! Store all of the potential argument registers in va_list format.
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st %i0, [%fp+68+0]
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st %i1, [%fp+68+4]
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st %i2, [%fp+68+8]
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st %i3, [%fp+68+12]
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st %i4, [%fp+68+16]
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st %i5, [%fp+68+20]
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! Call ffi_closure_sparc_inner to do the bulk of the work.
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mov %g2, %o0
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add %fp, -8, %o1
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add %fp, 64, %o2
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call ffi_closure_sparc_inner_v8
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add %fp, -16, %o3
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! Load up the return value in the proper type.
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! See ffi_prep_cif_machdep for the list of cases.
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cmp %o0, FFI_TYPE_VOID
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be done1
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cmp %o0, FFI_TYPE_INT
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be integer
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cmp %o0, FFI_TYPE_FLOAT
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be,a done1
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ld [%fp-8], %f0
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cmp %o0, FFI_TYPE_DOUBLE
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be,a done1
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ldd [%fp-8], %f0
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#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
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cmp %o0, FFI_TYPE_LONGDOUBLE
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be done2
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#endif
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cmp %o0, FFI_TYPE_STRUCT
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be done2
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! FFI_TYPE_SINT64
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! FFI_TYPE_UINT64
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ld [%fp-4], %i1
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integer:
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ld [%fp-8], %i0
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done1:
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jmp %i7+8
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restore
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done2:
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! Skip 'unimp'.
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jmp %i7+12
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restore
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.LLFE2:
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.ffi_closure_v8_end:
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.size ffi_closure_v8,.ffi_closure_v8_end-ffi_closure_v8
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#ifdef SPARC64
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#define WS 8
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#define nword xword
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#define uanword uaxword
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#else
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#define WS 4
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#define nword long
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#define uanword uaword
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#endif
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#ifdef HAVE_RO_EH_FRAME
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.section ".eh_frame",#alloc
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#else
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.section ".eh_frame",#alloc,#write
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#endif
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.LLframe1:
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.uaword .LLECIE1-.LLSCIE1 ! Length of Common Information Entry
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.LLSCIE1:
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.uaword 0x0 ! CIE Identifier Tag
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.byte 0x1 ! CIE Version
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.ascii "zR\0" ! CIE Augmentation
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.byte 0x1 ! uleb128 0x1; CIE Code Alignment Factor
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.byte 0x80-WS ! sleb128 -WS; CIE Data Alignment Factor
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.byte 0xf ! CIE RA Column
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.byte 0x1 ! uleb128 0x1; Augmentation size
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#ifdef HAVE_AS_SPARC_UA_PCREL
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.byte 0x1b ! FDE Encoding (pcrel sdata4)
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#else
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.byte 0x50 ! FDE Encoding (aligned absolute)
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#endif
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.byte 0xc ! DW_CFA_def_cfa
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.byte 0xe ! uleb128 0xe
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.byte 0x0 ! uleb128 0x0
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.align WS
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.LLECIE1:
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.LLSFDE1:
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.uaword .LLEFDE1-.LLASFDE1 ! FDE Length
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.LLASFDE1:
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.uaword .LLASFDE1-.LLframe1 ! FDE CIE offset
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#ifdef HAVE_AS_SPARC_UA_PCREL
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.uaword %r_disp32(.LLFB1)
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.uaword .LLFE1-.LLFB1 ! FDE address range
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#else
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.align WS
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.nword .LLFB1
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.uanword .LLFE1-.LLFB1 ! FDE address range
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#endif
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.byte 0x0 ! uleb128 0x0; Augmentation size
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.byte 0x4 ! DW_CFA_advance_loc4
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.uaword .LLCFI0-.LLFB1
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.byte 0xd ! DW_CFA_def_cfa_register
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.byte 0x1e ! uleb128 0x1e
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.byte 0x2d ! DW_CFA_GNU_window_save
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.byte 0x9 ! DW_CFA_register
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.byte 0xf ! uleb128 0xf
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.byte 0x1f ! uleb128 0x1f
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.align WS
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.LLEFDE1:
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.LLSFDE2:
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.uaword .LLEFDE2-.LLASFDE2 ! FDE Length
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.LLASFDE2:
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.uaword .LLASFDE2-.LLframe1 ! FDE CIE offset
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#ifdef HAVE_AS_SPARC_UA_PCREL
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.uaword %r_disp32(.LLFB2)
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.uaword .LLFE2-.LLFB2 ! FDE address range
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#else
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.align WS
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.nword .LLFB2
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.uanword .LLFE2-.LLFB2 ! FDE address range
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#endif
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.byte 0x0 ! uleb128 0x0; Augmentation size
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.byte 0x4 ! DW_CFA_advance_loc4
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.uaword .LLCFI1-.LLFB2
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.byte 0xd ! DW_CFA_def_cfa_register
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.byte 0x1e ! uleb128 0x1e
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.byte 0x2d ! DW_CFA_GNU_window_save
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.byte 0x9 ! DW_CFA_register
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.byte 0xf ! uleb128 0xf
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.byte 0x1f ! uleb128 0x1f
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.align WS
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.LLEFDE2:
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