From ac57e32a0222a3f18e138f0a358d1d01921be3a0 Mon Sep 17 00:00:00 2001 From: Aryadev Chavali Date: Mon, 23 Oct 2023 04:24:28 +0100 Subject: Added lib folder for general stuff, introduced as target to Makefile --- lib/base.h | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 lib/base.h (limited to 'lib/base.h') diff --git a/lib/base.h b/lib/base.h new file mode 100644 index 0000000..dbeec80 --- /dev/null +++ b/lib/base.h @@ -0,0 +1,70 @@ +/* Copyright (C) 2023 Aryadev Chavali + + * You may distribute and modify this code under the terms of the GPLv2 + * license. You should have received a copy of the GPLv2 license with + * this file. If not, please write to: aryadev@aryadevchavali.com. + + * Created: 2023-10-15 + * Author: Aryadev Chavali + * Description: Basic types and routines + */ + +#ifndef BASE_H +#define BASE_H + +#include + +#define ARR_SIZE(xs) (sizeof(xs) / sizeof(xs[0])) +#define MAX(a, b) ((a) > (b) ? (a) : (b)) +#define MIN(a, b) ((a) > (b) ? (b) : (a)) + +// Flags +#ifndef VERBOSE +#define VERBOSE 0 +#endif + +typedef uint64_t u64; +typedef uint32_t u32; +typedef int32_t i32; +typedef int64_t i64; +typedef float f32; +typedef double f64; + +typedef uint8_t byte; +typedef u32 hword; +typedef u64 word; + +typedef union +{ + byte as_byte; + hword as_hword; + word as_word; +} data_t; + +typedef enum +{ + DATA_TYPE_NIL = 0, + DATA_TYPE_BYTE, + DATA_TYPE_HWORD, + DATA_TYPE_WORD, +} data_type_t; + +#define DBYTE(BYTE) ((data_t){.as_byte = (BYTE)}) +#define DHWORD(HWORD) ((data_t){.as_hword = (HWORD)}) +#define DWORD(WORD) ((data_t){.as_word = (WORD)}) + +#define HWORD_SIZE sizeof(hword) +#define WORD_SIZE sizeof(word) + +// Macros to extract the nth byte or nth hword from a word +#define WORD_NTH_BYTE(WORD, N) (((WORD) >> ((N)*8)) & 0xff) +#define WORD_NTH_HWORD(WORD, N) (((WORD) >> ((N)*2)) & 0xFFFFFFFF) + +// Assume array contains 4 bytes. +hword convert_bytes_to_hword(byte *); +void convert_hword_to_bytes(hword, byte *); +// Assume array contains 8 bytes. +word convert_bytes_to_word(byte *); +void convert_word_to_bytes(word, byte *); + +#endif -- cgit v1.2.3-13-gbd6f