diff options
Diffstat (limited to 'runtime/ia32/vararg.S')
| -rw-r--r-- | runtime/ia32/vararg.S | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/runtime/ia32/vararg.S b/runtime/ia32/vararg.S new file mode 100644 index 0000000..ec55a45 --- /dev/null +++ b/runtime/ia32/vararg.S @@ -0,0 +1,69 @@ +// ***************************************************************** +// +// The Compcert verified compiler +// +// Xavier Leroy, INRIA Paris-Rocquencourt +// +// Copyright (c) 2013 Institut National de Recherche en Informatique et +// en Automatique. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// * Neither the name of the <organization> nor the +// names of its contributors may be used to endorse or promote products +// derived from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT +// HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +// ********************************************************************* + +// Helper functions for variadic functions <stdarg.h>. IA32 version + +#include "sysdeps.h" + +// typedef void * va_list; +// unsigned int __compcert_va_int32(va_list * ap); +// unsigned long long __compcert_va_int64(va_list * ap); +// double __compcert_va_float64(va_list * ap); + +FUNCTION(__compcert_va_int32) + movl 4(%esp), %ecx // %ecx = ap parameter + movl 0(%ecx), %edx // %edx = current argument pointer + movl 0(%edx), %eax // load the int32 value there + addl $4, %edx // increment argument pointer by 4 + movl %edx, 0(%ecx) + ret +ENDFUNCTION(__compcert_va_int32) + +FUNCTION(__compcert_va_int64) + movl 4(%esp), %ecx // %ecx = ap parameter + movl 0(%ecx), %edx // %edx = current argument pointer + movl 0(%edx), %eax // load the int64 value there + movl 4(%edx), %edx + addl $8, 0(%ecx) // increment argument pointer by 8 + ret +ENDFUNCTION(__compcert_va_int64) + +FUNCTION(__compcert_va_float64) + movl 4(%esp), %ecx // %ecx = ap parameter + movl 0(%ecx), %edx // %edx = current argument pointer + fldl 0(%edx) // load the float64 value there + addl $8, %edx // increment argument pointer by 8 + movl %edx, 0(%ecx) + ret +ENDFUNCTION(__compcert_va_float64) |