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Diffstat (limited to 'libffi.old/src/x86/sysv.S')
| -rw-r--r-- | libffi.old/src/x86/sysv.S | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/libffi.old/src/x86/sysv.S b/libffi.old/src/x86/sysv.S new file mode 100644 index 0000000..53a4c2b --- /dev/null +++ b/libffi.old/src/x86/sysv.S @@ -0,0 +1,184 @@ +/* ----------------------------------------------------------------------- + sysv.S - Copyright (c) 1996, 1998, 2001, 2002, 2003 Red Hat, Inc. + + X86 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. + ----------------------------------------------------------------------- */ + +#ifndef __x86_64__ + +#define LIBFFI_ASM +#include <fficonfig.h> +#include <ffi.h> + +.text + +.globl ffi_prep_args + + .align 4 +.globl ffi_call_SYSV + .type ffi_call_SYSV,@function + +ffi_call_SYSV: +.LFB1: + pushl %ebp +.LCFI0: + movl %esp,%ebp +.LCFI1: + /* Make room for all of the new args. */ + movl 16(%ebp),%ecx + subl %ecx,%esp + + movl %esp,%eax + + /* Place all of the ffi_prep_args in position */ + pushl 12(%ebp) + pushl %eax + call *8(%ebp) + + /* Return stack to previous state and call the function */ + addl $8,%esp + + call *28(%ebp) + + /* Remove the space we pushed for the args */ + movl 16(%ebp),%ecx + addl %ecx,%esp + + /* Load %ecx with the return type code */ + movl 20(%ebp),%ecx + + /* If the return value pointer is NULL, assume no return value. */ + cmpl $0,24(%ebp) + jne retint + + /* Even if there is no space for the return value, we are + obliged to handle floating-point values. */ + cmpl $FFI_TYPE_FLOAT,%ecx + jne noretval + fstp %st(0) + + jmp epilogue + +retint: + cmpl $FFI_TYPE_INT,%ecx + jne retfloat + /* Load %ecx with the pointer to storage for the return value */ + movl 24(%ebp),%ecx + movl %eax,0(%ecx) + jmp epilogue + +retfloat: + cmpl $FFI_TYPE_FLOAT,%ecx + jne retdouble + /* Load %ecx with the pointer to storage for the return value */ + movl 24(%ebp),%ecx + fstps (%ecx) + jmp epilogue + +retdouble: + cmpl $FFI_TYPE_DOUBLE,%ecx + jne retlongdouble + /* Load %ecx with the pointer to storage for the return value */ + movl 24(%ebp),%ecx + fstpl (%ecx) + jmp epilogue + +retlongdouble: + cmpl $FFI_TYPE_LONGDOUBLE,%ecx + jne retint64 + /* Load %ecx with the pointer to storage for the return value */ + movl 24(%ebp),%ecx + fstpt (%ecx) + jmp epilogue + +retint64: + cmpl $FFI_TYPE_SINT64,%ecx + jne retstruct + /* Load %ecx with the pointer to storage for the return value */ + movl 24(%ebp),%ecx + movl %eax,0(%ecx) + movl %edx,4(%ecx) + +retstruct: + /* Nothing to do! */ + +noretval: +epilogue: + movl %ebp,%esp + popl %ebp + ret +.LFE1: +.ffi_call_SYSV_end: + .size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV + + .section .eh_frame,EH_FRAME_FLAGS,@progbits +.Lframe1: + .long .LECIE1-.LSCIE1 /* Length of Common Information Entry */ +.LSCIE1: + .long 0x0 /* CIE Identifier Tag */ + .byte 0x1 /* CIE Version */ +#ifdef __PIC__ + .ascii "zR\0" /* CIE Augmentation */ +#else + .ascii "\0" /* CIE Augmentation */ +#endif + .byte 0x1 /* .uleb128 0x1; CIE Code Alignment Factor */ + .byte 0x7c /* .sleb128 -4; CIE Data Alignment Factor */ + .byte 0x8 /* CIE RA Column */ +#ifdef __PIC__ + .byte 0x1 /* .uleb128 0x1; Augmentation size */ + .byte 0x1b /* FDE Encoding (pcrel sdata4) */ +#endif + .byte 0xc /* DW_CFA_def_cfa */ + .byte 0x4 /* .uleb128 0x4 */ + .byte 0x4 /* .uleb128 0x4 */ + .byte 0x88 /* DW_CFA_offset, column 0x8 */ + .byte 0x1 /* .uleb128 0x1 */ + .align 4 +.LECIE1: +.LSFDE1: + .long .LEFDE1-.LASFDE1 /* FDE Length */ +.LASFDE1: + .long .LASFDE1-.Lframe1 /* FDE CIE offset */ +#ifdef __PIC__ + .long .LFB1-. /* FDE initial location */ +#else + .long .LFB1 /* FDE initial location */ +#endif + .long .LFE1-.LFB1 /* FDE address range */ +#ifdef __PIC__ + .byte 0x0 /* .uleb128 0x0; Augmentation size */ +#endif + .byte 0x4 /* DW_CFA_advance_loc4 */ + .long .LCFI0-.LFB1 + .byte 0xe /* DW_CFA_def_cfa_offset */ + .byte 0x8 /* .uleb128 0x8 */ + .byte 0x85 /* DW_CFA_offset, column 0x5 */ + .byte 0x2 /* .uleb128 0x2 */ + .byte 0x4 /* DW_CFA_advance_loc4 */ + .long .LCFI1-.LCFI0 + .byte 0xd /* DW_CFA_def_cfa_register */ + .byte 0x5 /* .uleb128 0x5 */ + .align 4 +.LEFDE1: + +#endif /* ifndef __x86_64__ */ |