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https://github.com/86Box/probing-tools.git
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74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box Probing Tools distribution.
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*
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* Common library for C-based tools.
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*
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*
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*
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* Authors: RichardG, <richardg867@gmail.com>
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*
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* Copyright 2021 RichardG.
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*
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*/
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#ifdef __POSIX_UEFI__
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# include <uefi.h>
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#else
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# include <string.h>
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#endif
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#include "clib_std.h"
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/* String functions. */
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int
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parse_hex_u8(char *val, uint8_t *dest)
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{
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uint32_t dest32;
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int ret = parse_hex_u32(val, &dest32);
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*dest = dest32;
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return ret;
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}
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int
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parse_hex_u16(char *val, uint16_t *dest)
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{
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uint32_t dest32;
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int ret = parse_hex_u32(val, &dest32);
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*dest = dest32;
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return ret;
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}
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int
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parse_hex_u32(char *val, uint32_t *dest)
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{
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int i, len = strlen(val);
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uint8_t digit;
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*dest = 0;
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for (i = 0; i < len; i++) {
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if ((val[i] >= 0x30) && (val[i] <= 0x39))
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digit = val[i] - 0x30;
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else if ((val[i] >= 0x41) && (val[i] <= 0x46))
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digit = val[i] - 0x37;
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else if ((val[i] >= 0x61) && (val[i] <= 0x66))
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digit = val[i] - 0x57;
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else
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return 0;
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*dest = (*dest << 4) | digit;
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}
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return 1;
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}
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/* Comparator functions. */
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int
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comp_ui8(const void *elem1, const void *elem2)
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{
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uint8_t a = *((uint8_t *) elem1);
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uint8_t b = *((uint8_t *) elem2);
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return ((a < b) ? -1 : ((a > b) ? 1 : 0));
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}
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