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732 |
jeremybenn |
/* -----------------------------------------------------------------------
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sysv.S - Copyright (c) 1996, 1998, 2001-2003, 2005, 2008, 2010 Red Hat, Inc.
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X86 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,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#ifndef __x86_64__
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#define LIBFFI_ASM
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#include
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#include
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.text
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.globl ffi_prep_args
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.align 4
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.globl ffi_call_SYSV
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.type ffi_call_SYSV,@function
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ffi_call_SYSV:
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.LFB1:
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pushl %ebp
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.LCFI0:
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movl %esp,%ebp
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.LCFI1:
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/* Make room for all of the new args. */
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movl 16(%ebp),%ecx
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subl %ecx,%esp
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/* Align the stack pointer to 16-bytes */
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andl $0xfffffff0, %esp
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movl %esp,%eax
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/* Place all of the ffi_prep_args in position */
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pushl 12(%ebp)
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pushl %eax
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call *8(%ebp)
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/* Return stack to previous state and call the function */
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addl $8,%esp
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call *28(%ebp)
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/* Load %ecx with the return type code */
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movl 20(%ebp),%ecx
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/* Protect %esi. We're going to pop it in the epilogue. */
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pushl %esi
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/* If the return value pointer is NULL, assume no return value. */
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cmpl $0,24(%ebp)
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jne 0f
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/* Even if there is no space for the return value, we are
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obliged to handle floating-point values. */
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cmpl $FFI_TYPE_FLOAT,%ecx
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jne noretval
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fstp %st(0)
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jmp epilogue
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0:
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call 1f
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.Lstore_table:
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.long noretval-.Lstore_table /* FFI_TYPE_VOID */
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.long retint-.Lstore_table /* FFI_TYPE_INT */
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.long retfloat-.Lstore_table /* FFI_TYPE_FLOAT */
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.long retdouble-.Lstore_table /* FFI_TYPE_DOUBLE */
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.long retlongdouble-.Lstore_table /* FFI_TYPE_LONGDOUBLE */
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.long retuint8-.Lstore_table /* FFI_TYPE_UINT8 */
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.long retsint8-.Lstore_table /* FFI_TYPE_SINT8 */
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.long retuint16-.Lstore_table /* FFI_TYPE_UINT16 */
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.long retsint16-.Lstore_table /* FFI_TYPE_SINT16 */
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.long retint-.Lstore_table /* FFI_TYPE_UINT32 */
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.long retint-.Lstore_table /* FFI_TYPE_SINT32 */
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.long retint64-.Lstore_table /* FFI_TYPE_UINT64 */
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.long retint64-.Lstore_table /* FFI_TYPE_SINT64 */
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.long retstruct-.Lstore_table /* FFI_TYPE_STRUCT */
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.long retint-.Lstore_table /* FFI_TYPE_POINTER */
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1:
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pop %esi
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add (%esi, %ecx, 4), %esi
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jmp *%esi
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/* Sign/zero extend as appropriate. */
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retsint8:
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movsbl %al, %eax
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jmp retint
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retsint16:
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movswl %ax, %eax
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jmp retint
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retuint8:
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movzbl %al, %eax
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jmp retint
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retuint16:
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movzwl %ax, %eax
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jmp retint
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retfloat:
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/* Load %ecx with the pointer to storage for the return value */
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movl 24(%ebp),%ecx
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fstps (%ecx)
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jmp epilogue
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retdouble:
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/* Load %ecx with the pointer to storage for the return value */
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movl 24(%ebp),%ecx
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fstpl (%ecx)
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jmp epilogue
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retlongdouble:
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/* Load %ecx with the pointer to storage for the return value */
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movl 24(%ebp),%ecx
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fstpt (%ecx)
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jmp epilogue
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retint64:
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/* Load %ecx with the pointer to storage for the return value */
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movl 24(%ebp),%ecx
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movl %eax,0(%ecx)
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| 148 |
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movl %edx,4(%ecx)
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jmp epilogue
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retint:
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/* Load %ecx with the pointer to storage for the return value */
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movl 24(%ebp),%ecx
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movl %eax,0(%ecx)
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retstruct:
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/* Nothing to do! */
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noretval:
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epilogue:
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popl %esi
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movl %ebp,%esp
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popl %ebp
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ret
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.LFE1:
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.ffi_call_SYSV_end:
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.size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
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.align 4
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FFI_HIDDEN (ffi_closure_SYSV)
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.globl ffi_closure_SYSV
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.type ffi_closure_SYSV, @function
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| 173 |
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| 174 |
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ffi_closure_SYSV:
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.LFB2:
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| 176 |
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pushl %ebp
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.LCFI2:
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movl %esp, %ebp
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.LCFI3:
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subl $40, %esp
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leal -24(%ebp), %edx
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movl %edx, -12(%ebp) /* resp */
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leal 8(%ebp), %edx
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movl %edx, 4(%esp) /* args = __builtin_dwarf_cfa () */
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leal -12(%ebp), %edx
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movl %edx, (%esp) /* &resp */
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#if defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE || !defined __PIC__
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call ffi_closure_SYSV_inner
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#else
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movl %ebx, 8(%esp)
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.LCFI7:
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call 1f
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1: popl %ebx
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addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
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call ffi_closure_SYSV_inner@PLT
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movl 8(%esp), %ebx
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#endif
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movl -12(%ebp), %ecx
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cmpl $FFI_TYPE_INT, %eax
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je .Lcls_retint
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/* Handle FFI_TYPE_UINT8, FFI_TYPE_SINT8, FFI_TYPE_UINT16,
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| 203 |
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FFI_TYPE_SINT16, FFI_TYPE_UINT32, FFI_TYPE_SINT32. */
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cmpl $FFI_TYPE_UINT64, %eax
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jge 0f
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cmpl $FFI_TYPE_UINT8, %eax
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jge .Lcls_retint
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| 209 |
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0: cmpl $FFI_TYPE_FLOAT, %eax
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je .Lcls_retfloat
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cmpl $FFI_TYPE_DOUBLE, %eax
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| 212 |
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je .Lcls_retdouble
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cmpl $FFI_TYPE_LONGDOUBLE, %eax
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je .Lcls_retldouble
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cmpl $FFI_TYPE_SINT64, %eax
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je .Lcls_retllong
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cmpl $FFI_TYPE_STRUCT, %eax
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| 218 |
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je .Lcls_retstruct
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| 219 |
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.Lcls_epilogue:
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| 220 |
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movl %ebp, %esp
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| 221 |
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popl %ebp
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| 222 |
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ret
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| 223 |
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.Lcls_retint:
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| 224 |
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movl (%ecx), %eax
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| 225 |
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jmp .Lcls_epilogue
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| 226 |
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.Lcls_retfloat:
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| 227 |
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flds (%ecx)
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| 228 |
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jmp .Lcls_epilogue
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| 229 |
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.Lcls_retdouble:
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| 230 |
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fldl (%ecx)
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| 231 |
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jmp .Lcls_epilogue
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| 232 |
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.Lcls_retldouble:
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| 233 |
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fldt (%ecx)
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| 234 |
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jmp .Lcls_epilogue
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| 235 |
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.Lcls_retllong:
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| 236 |
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movl (%ecx), %eax
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| 237 |
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movl 4(%ecx), %edx
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| 238 |
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jmp .Lcls_epilogue
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| 239 |
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.Lcls_retstruct:
|
| 240 |
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movl %ebp, %esp
|
| 241 |
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popl %ebp
|
| 242 |
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ret $4
|
| 243 |
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.LFE2:
|
| 244 |
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.size ffi_closure_SYSV, .-ffi_closure_SYSV
|
| 245 |
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|
| 246 |
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#if !FFI_NO_RAW_API
|
| 247 |
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|
| 248 |
|
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/* Precalculate for e.g. the Solaris 10/x86 assembler. */
|
| 249 |
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#if FFI_TRAMPOLINE_SIZE == 10
|
| 250 |
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#define RAW_CLOSURE_CIF_OFFSET 12
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| 251 |
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#define RAW_CLOSURE_FUN_OFFSET 16
|
| 252 |
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#define RAW_CLOSURE_USER_DATA_OFFSET 20
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| 253 |
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#elif FFI_TRAMPOLINE_SIZE == 24
|
| 254 |
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#define RAW_CLOSURE_CIF_OFFSET 24
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| 255 |
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#define RAW_CLOSURE_FUN_OFFSET 28
|
| 256 |
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#define RAW_CLOSURE_USER_DATA_OFFSET 32
|
| 257 |
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#else
|
| 258 |
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#define RAW_CLOSURE_CIF_OFFSET ((FFI_TRAMPOLINE_SIZE + 3) & ~3)
|
| 259 |
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#define RAW_CLOSURE_FUN_OFFSET (RAW_CLOSURE_CIF_OFFSET + 4)
|
| 260 |
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#define RAW_CLOSURE_USER_DATA_OFFSET (RAW_CLOSURE_FUN_OFFSET + 4)
|
| 261 |
|
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#endif
|
| 262 |
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#define CIF_FLAGS_OFFSET 20
|
| 263 |
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|
| 264 |
|
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.align 4
|
| 265 |
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FFI_HIDDEN (ffi_closure_raw_SYSV)
|
| 266 |
|
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.globl ffi_closure_raw_SYSV
|
| 267 |
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.type ffi_closure_raw_SYSV, @function
|
| 268 |
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|
| 269 |
|
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ffi_closure_raw_SYSV:
|
| 270 |
|
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.LFB3:
|
| 271 |
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pushl %ebp
|
| 272 |
|
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.LCFI4:
|
| 273 |
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movl %esp, %ebp
|
| 274 |
|
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.LCFI5:
|
| 275 |
|
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pushl %esi
|
| 276 |
|
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.LCFI6:
|
| 277 |
|
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subl $36, %esp
|
| 278 |
|
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movl RAW_CLOSURE_CIF_OFFSET(%eax), %esi /* closure->cif */
|
| 279 |
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movl RAW_CLOSURE_USER_DATA_OFFSET(%eax), %edx /* closure->user_data */
|
| 280 |
|
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movl %edx, 12(%esp) /* user_data */
|
| 281 |
|
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leal 8(%ebp), %edx /* __builtin_dwarf_cfa () */
|
| 282 |
|
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movl %edx, 8(%esp) /* raw_args */
|
| 283 |
|
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leal -24(%ebp), %edx
|
| 284 |
|
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movl %edx, 4(%esp) /* &res */
|
| 285 |
|
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movl %esi, (%esp) /* cif */
|
| 286 |
|
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call *RAW_CLOSURE_FUN_OFFSET(%eax) /* closure->fun */
|
| 287 |
|
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movl CIF_FLAGS_OFFSET(%esi), %eax /* rtype */
|
| 288 |
|
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cmpl $FFI_TYPE_INT, %eax
|
| 289 |
|
|
je .Lrcls_retint
|
| 290 |
|
|
|
| 291 |
|
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/* Handle FFI_TYPE_UINT8, FFI_TYPE_SINT8, FFI_TYPE_UINT16,
|
| 292 |
|
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FFI_TYPE_SINT16, FFI_TYPE_UINT32, FFI_TYPE_SINT32. */
|
| 293 |
|
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cmpl $FFI_TYPE_UINT64, %eax
|
| 294 |
|
|
jge 0f
|
| 295 |
|
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cmpl $FFI_TYPE_UINT8, %eax
|
| 296 |
|
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jge .Lrcls_retint
|
| 297 |
|
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0:
|
| 298 |
|
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cmpl $FFI_TYPE_FLOAT, %eax
|
| 299 |
|
|
je .Lrcls_retfloat
|
| 300 |
|
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cmpl $FFI_TYPE_DOUBLE, %eax
|
| 301 |
|
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je .Lrcls_retdouble
|
| 302 |
|
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cmpl $FFI_TYPE_LONGDOUBLE, %eax
|
| 303 |
|
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je .Lrcls_retldouble
|
| 304 |
|
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cmpl $FFI_TYPE_SINT64, %eax
|
| 305 |
|
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je .Lrcls_retllong
|
| 306 |
|
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.Lrcls_epilogue:
|
| 307 |
|
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addl $36, %esp
|
| 308 |
|
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popl %esi
|
| 309 |
|
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popl %ebp
|
| 310 |
|
|
ret
|
| 311 |
|
|
.Lrcls_retint:
|
| 312 |
|
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movl -24(%ebp), %eax
|
| 313 |
|
|
jmp .Lrcls_epilogue
|
| 314 |
|
|
.Lrcls_retfloat:
|
| 315 |
|
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flds -24(%ebp)
|
| 316 |
|
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jmp .Lrcls_epilogue
|
| 317 |
|
|
.Lrcls_retdouble:
|
| 318 |
|
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fldl -24(%ebp)
|
| 319 |
|
|
jmp .Lrcls_epilogue
|
| 320 |
|
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.Lrcls_retldouble:
|
| 321 |
|
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fldt -24(%ebp)
|
| 322 |
|
|
jmp .Lrcls_epilogue
|
| 323 |
|
|
.Lrcls_retllong:
|
| 324 |
|
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movl -24(%ebp), %eax
|
| 325 |
|
|
movl -20(%ebp), %edx
|
| 326 |
|
|
jmp .Lrcls_epilogue
|
| 327 |
|
|
.LFE3:
|
| 328 |
|
|
.size ffi_closure_raw_SYSV, .-ffi_closure_raw_SYSV
|
| 329 |
|
|
#endif
|
| 330 |
|
|
|
| 331 |
|
|
#if defined __PIC__
|
| 332 |
|
|
# if defined __sun__ && defined __svr4__
|
| 333 |
|
|
/* 32-bit Solaris 2/x86 uses datarel encoding for PIC. GNU ld before 2.22
|
| 334 |
|
|
doesn't correctly sort .eh_frame_hdr with mixed encodings, so match this. */
|
| 335 |
|
|
# define FDE_ENCODING 0x30 /* datarel */
|
| 336 |
|
|
# define FDE_ENCODE(X) X@GOTOFF
|
| 337 |
|
|
# else
|
| 338 |
|
|
# define FDE_ENCODING 0x1b /* pcrel sdata4 */
|
| 339 |
|
|
# if defined HAVE_AS_X86_PCREL
|
| 340 |
|
|
# define FDE_ENCODE(X) X-.
|
| 341 |
|
|
# else
|
| 342 |
|
|
# define FDE_ENCODE(X) X@rel
|
| 343 |
|
|
# endif
|
| 344 |
|
|
# endif
|
| 345 |
|
|
#else
|
| 346 |
|
|
# define FDE_ENCODING 0 /* absolute */
|
| 347 |
|
|
# define FDE_ENCODE(X) X
|
| 348 |
|
|
#endif
|
| 349 |
|
|
|
| 350 |
|
|
.section .eh_frame,EH_FRAME_FLAGS,@progbits
|
| 351 |
|
|
.Lframe1:
|
| 352 |
|
|
.long .LECIE1-.LSCIE1 /* Length of Common Information Entry */
|
| 353 |
|
|
.LSCIE1:
|
| 354 |
|
|
.long 0x0 /* CIE Identifier Tag */
|
| 355 |
|
|
.byte 0x1 /* CIE Version */
|
| 356 |
|
|
#ifdef HAVE_AS_ASCII_PSEUDO_OP
|
| 357 |
|
|
#ifdef __PIC__
|
| 358 |
|
|
.ascii "zR\0" /* CIE Augmentation */
|
| 359 |
|
|
#else
|
| 360 |
|
|
.ascii "\0" /* CIE Augmentation */
|
| 361 |
|
|
#endif
|
| 362 |
|
|
#elif defined HAVE_AS_STRING_PSEUDO_OP
|
| 363 |
|
|
#ifdef __PIC__
|
| 364 |
|
|
.string "zR" /* CIE Augmentation */
|
| 365 |
|
|
#else
|
| 366 |
|
|
.string "" /* CIE Augmentation */
|
| 367 |
|
|
#endif
|
| 368 |
|
|
#else
|
| 369 |
|
|
#error missing .ascii/.string
|
| 370 |
|
|
#endif
|
| 371 |
|
|
.byte 0x1 /* .uleb128 0x1; CIE Code Alignment Factor */
|
| 372 |
|
|
.byte 0x7c /* .sleb128 -4; CIE Data Alignment Factor */
|
| 373 |
|
|
.byte 0x8 /* CIE RA Column */
|
| 374 |
|
|
#ifdef __PIC__
|
| 375 |
|
|
.byte 0x1 /* .uleb128 0x1; Augmentation size */
|
| 376 |
|
|
.byte FDE_ENCODING
|
| 377 |
|
|
#endif
|
| 378 |
|
|
.byte 0xc /* DW_CFA_def_cfa */
|
| 379 |
|
|
.byte 0x4 /* .uleb128 0x4 */
|
| 380 |
|
|
.byte 0x4 /* .uleb128 0x4 */
|
| 381 |
|
|
.byte 0x88 /* DW_CFA_offset, column 0x8 */
|
| 382 |
|
|
.byte 0x1 /* .uleb128 0x1 */
|
| 383 |
|
|
.align 4
|
| 384 |
|
|
.LECIE1:
|
| 385 |
|
|
.LSFDE1:
|
| 386 |
|
|
.long .LEFDE1-.LASFDE1 /* FDE Length */
|
| 387 |
|
|
.LASFDE1:
|
| 388 |
|
|
.long .LASFDE1-.Lframe1 /* FDE CIE offset */
|
| 389 |
|
|
.long FDE_ENCODE(.LFB1) /* FDE initial location */
|
| 390 |
|
|
.long .LFE1-.LFB1 /* FDE address range */
|
| 391 |
|
|
#ifdef __PIC__
|
| 392 |
|
|
.byte 0x0 /* .uleb128 0x0; Augmentation size */
|
| 393 |
|
|
#endif
|
| 394 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 395 |
|
|
.long .LCFI0-.LFB1
|
| 396 |
|
|
.byte 0xe /* DW_CFA_def_cfa_offset */
|
| 397 |
|
|
.byte 0x8 /* .uleb128 0x8 */
|
| 398 |
|
|
.byte 0x85 /* DW_CFA_offset, column 0x5 */
|
| 399 |
|
|
.byte 0x2 /* .uleb128 0x2 */
|
| 400 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 401 |
|
|
.long .LCFI1-.LCFI0
|
| 402 |
|
|
.byte 0xd /* DW_CFA_def_cfa_register */
|
| 403 |
|
|
.byte 0x5 /* .uleb128 0x5 */
|
| 404 |
|
|
.align 4
|
| 405 |
|
|
.LEFDE1:
|
| 406 |
|
|
.LSFDE2:
|
| 407 |
|
|
.long .LEFDE2-.LASFDE2 /* FDE Length */
|
| 408 |
|
|
.LASFDE2:
|
| 409 |
|
|
.long .LASFDE2-.Lframe1 /* FDE CIE offset */
|
| 410 |
|
|
.long FDE_ENCODE(.LFB2) /* FDE initial location */
|
| 411 |
|
|
.long .LFE2-.LFB2 /* FDE address range */
|
| 412 |
|
|
#ifdef __PIC__
|
| 413 |
|
|
.byte 0x0 /* .uleb128 0x0; Augmentation size */
|
| 414 |
|
|
#endif
|
| 415 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 416 |
|
|
.long .LCFI2-.LFB2
|
| 417 |
|
|
.byte 0xe /* DW_CFA_def_cfa_offset */
|
| 418 |
|
|
.byte 0x8 /* .uleb128 0x8 */
|
| 419 |
|
|
.byte 0x85 /* DW_CFA_offset, column 0x5 */
|
| 420 |
|
|
.byte 0x2 /* .uleb128 0x2 */
|
| 421 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 422 |
|
|
.long .LCFI3-.LCFI2
|
| 423 |
|
|
.byte 0xd /* DW_CFA_def_cfa_register */
|
| 424 |
|
|
.byte 0x5 /* .uleb128 0x5 */
|
| 425 |
|
|
#if !defined HAVE_HIDDEN_VISIBILITY_ATTRIBUTE && defined __PIC__
|
| 426 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 427 |
|
|
.long .LCFI7-.LCFI3
|
| 428 |
|
|
.byte 0x83 /* DW_CFA_offset, column 0x3 */
|
| 429 |
|
|
.byte 0xa /* .uleb128 0xa */
|
| 430 |
|
|
#endif
|
| 431 |
|
|
.align 4
|
| 432 |
|
|
.LEFDE2:
|
| 433 |
|
|
|
| 434 |
|
|
#if !FFI_NO_RAW_API
|
| 435 |
|
|
|
| 436 |
|
|
.LSFDE3:
|
| 437 |
|
|
.long .LEFDE3-.LASFDE3 /* FDE Length */
|
| 438 |
|
|
.LASFDE3:
|
| 439 |
|
|
.long .LASFDE3-.Lframe1 /* FDE CIE offset */
|
| 440 |
|
|
.long FDE_ENCODE(.LFB3) /* FDE initial location */
|
| 441 |
|
|
.long .LFE3-.LFB3 /* FDE address range */
|
| 442 |
|
|
#ifdef __PIC__
|
| 443 |
|
|
.byte 0x0 /* .uleb128 0x0; Augmentation size */
|
| 444 |
|
|
#endif
|
| 445 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 446 |
|
|
.long .LCFI4-.LFB3
|
| 447 |
|
|
.byte 0xe /* DW_CFA_def_cfa_offset */
|
| 448 |
|
|
.byte 0x8 /* .uleb128 0x8 */
|
| 449 |
|
|
.byte 0x85 /* DW_CFA_offset, column 0x5 */
|
| 450 |
|
|
.byte 0x2 /* .uleb128 0x2 */
|
| 451 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 452 |
|
|
.long .LCFI5-.LCFI4
|
| 453 |
|
|
.byte 0xd /* DW_CFA_def_cfa_register */
|
| 454 |
|
|
.byte 0x5 /* .uleb128 0x5 */
|
| 455 |
|
|
.byte 0x4 /* DW_CFA_advance_loc4 */
|
| 456 |
|
|
.long .LCFI6-.LCFI5
|
| 457 |
|
|
.byte 0x86 /* DW_CFA_offset, column 0x6 */
|
| 458 |
|
|
.byte 0x3 /* .uleb128 0x3 */
|
| 459 |
|
|
.align 4
|
| 460 |
|
|
.LEFDE3:
|
| 461 |
|
|
|
| 462 |
|
|
#endif
|
| 463 |
|
|
|
| 464 |
|
|
#endif /* ifndef __x86_64__ */
|
| 465 |
|
|
|
| 466 |
|
|
#if defined __ELF__ && defined __linux__
|
| 467 |
|
|
.section .note.GNU-stack,"",@progbits
|
| 468 |
|
|
#endif
|
