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/* ----------------------------------------------------------------------- *
*
* Copyright 1996-2016 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for
* the specific copyright holders.
*
* 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.
*
* 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 THE COPYRIGHT OWNER OR
* CONTRIBUTORS 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.
*
* ----------------------------------------------------------------------- */
/*
* rdstrnum.c
*
* This converts a NASM string to an integer, used when a string
* is used in an integer constant context. This is a binary conversion,
* not a conversion from a numeric constant in text form.
*/
#include "compiler.h"
#include "nasmlib.h"
#include "nasm.h"
int64_t readstrnum(char *str, int length, bool *warn)
{
int64_t charconst = 0;
int i;
*warn = false;
str += length;
if (globalbits == 64) {
for (i = 0; i < length; i++) {
if (charconst & UINT64_C(0xFF00000000000000))
*warn = true;
charconst &= ~UINT64_C(0xFF00000000000000);
charconst = (charconst << 8) + (uint8_t)*--str;
}
} else {
for (i = 0; i < length; i++) {
if (charconst & UINT32_C(0xFF000000))
*warn = true;
charconst &= ~UINT32_C(0xFF000000);
charconst = (charconst << 8) + (uint8_t)*--str;
}
}
return charconst;
}
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