FakePgmSpace.h

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/****
 * Sming Framework Project - Open Source framework for high efficiency native ESP8266 development.
 * Created 2015 by Skurydin Alexey
 * http://github.com/SmingHub/Sming
 * All files of the Sming Core are provided under the LGPL v3 license.
 *
 * FakePgmSpace.h - Support for reading flash memory
 *
 ****/

#pragma once

#include <esp_attr.h>
#include <sys/pgmspace.h>

#include "m_printf.h"
#include "c_types.h"

#ifdef __cplusplus
extern "C"
{
#endif

#define isFlashPtr(ptr) ((uint32_t)ptr >= 0x40200000)

#define IS_ALIGNED(_x) (((uint32_t)(_x)&3) == 0)

#define ALIGNUP(_n) (((_n) + 3) & ~3)

#define ALIGNDOWN(_n) ((_n) & ~3)

#define printf_P_heap(f_P, ...)                                                                                        \
    (__extension__({                                                                                                   \
        char* __localF = (char*)malloc(strlen_P(f_P) + 1);                                                             \
        strcpy_P(__localF, f_P);                                                                                       \
        int __result = os_printf_plus(__localF, ##__VA_ARGS__);                                                        \
        free(__localF);                                                                                                \
        __result;                                                                                                      \
    }))

#define printf_P_stack(f_P, ...)                                                                                       \
    (__extension__({                                                                                                   \
        char __localF[256];                                                                                            \
        strncpy_P(__localF, f_P, sizeof(__localF));                                                                    \
        __localF[sizeof(__localF) - 1] = '\0';                                                                         \
        m_printf(__localF, ##__VA_ARGS__);                                                                             \
    }))

#define printf_P printf_P_stack

#define PSTR_COUNTED(str)                                                                                              \
    (__extension__({                                                                                                   \
        static const char __pstr__[] PROGMEM = str;                                                                    \
        &__pstr__[0];                                                                                                  \
    }))

#define _F(str)                                                                                                        \
    (__extension__({                                                                                                   \
        DEFINE_PSTR_LOCAL(__pstr__, str);                                                                              \
        LOAD_PSTR(buf, __pstr__);                                                                                      \
        buf;                                                                                                           \
    }))


void* memcpy_aligned(void* dst, const void* src, unsigned len);

int memcmp_aligned(const void* ptr1, const void* ptr2, unsigned len);

#define DEFINE_PSTR(name, str) const char name[] PROGMEM_PSTR = str;

#define DEFINE_PSTR_LOCAL(name, str) static DEFINE_PSTR(name, str)

#define DECLARE_PSTR(name) extern const char name[] PROGMEM;

#define LOAD_PSTR(name, flash_str)                                                                                   \
    char name[ALIGNUP(sizeof(flash_str))] __attribute__((aligned(4)));                                               \
    memcpy_aligned(name, flash_str, sizeof(flash_str));

#define _FLOAD(pstr)                                                                                                  \
    (__extension__({                                                                                                   \
        LOAD_PSTR(_buf, pstr);                                                                                        \
        _buf;                                                                                                          \
    }))

#define PSTR_ARRAY(name, str)                                                                                          \
    DEFINE_PSTR_LOCAL(__pstr__##name, str);                                                                            \
    LOAD_PSTR(name, __pstr__##name)

#ifdef __cplusplus
}
#endif