93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/****************************************************************************
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Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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be copied by any method or incorporated into another program without
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the express written consent of Aerospace C.Power. This Information or any portion
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thereof remains the property of Aerospace C.Power. The Information contained herein
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is believed to be accurate and Aerospace C.Power assumes no responsibility or
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liability for its use in any way and conveys no license or title under
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any patent or copyright and makes no representation or warranty that this
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Information is free from patent or copyright infringement.
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****************************************************************************/
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/* os shim includes */
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#include "os_types.h"
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#include "os_mem.h"
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/* common includes */
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#include "iot_utils.h"
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static uint8_t *g_mem_bank_start;
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static uint32_t g_mem_bytes_rem;
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static uint8_t *g_current_mem_ptr;
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/* below functions should be implemented in c lib */
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extern void* memset(void* s, int32_t c, uint32_t size);
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extern void* memcpy(void* dest, const void* src, uint32_t size);
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extern void* memmove(void* dest, const void* src, uint32_t size);
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extern int32_t memcmp(const void *s1, const void *s2, size_t n);
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void os_mem_cpy(void *dst, const void *src, uint32_t len)
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{
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memcpy(dst, (void *)src, len);
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}
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void os_mem_move(void *dst, const void *src, uint32_t len)
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{
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memmove(dst, (void *)src, len);
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}
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int32_t os_mem_cmp(const void *dst, const void *src, uint32_t len)
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{
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return (int32_t)memcmp(dst, src, len);
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}
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void os_mem_set(void *ptr, uint8_t value, uint32_t len)
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{
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memset(ptr, value, len);
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}
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void os_mem_init(void *start_addr, uint32_t byte_len)
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{
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IOT_ASSERT(start_addr && byte_len > 4);
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g_mem_bank_start = start_addr;
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g_mem_bytes_rem = byte_len;
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g_current_mem_ptr = start_addr;
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}
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#if IOT_OS_MALLOC_DEBUG
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void *os_mem_malloc_debug(uint8_t *file, uint32_t line,
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module_id_t module_id, size_t size)
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#else
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void *os_mem_malloc(module_id_t module_id, size_t size)
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#endif
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{
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(void)module_id; // avoid warning. to be fixed.
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/* double word align */
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uint32_t size_dw = (size >> 2) + 1;
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uint32_t size_byte = size_dw << 2;
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void *buf = NULL;
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if (size_byte < g_mem_bytes_rem) {
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buf = g_current_mem_ptr;
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g_current_mem_ptr += size_byte;
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g_mem_bytes_rem -= size_byte;
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} else {
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IOT_ASSERT(0);
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}
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if (buf) {
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os_mem_set(buf, 0, size_byte);
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}
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return buf;
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}
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void os_mem_free(void *ptr)
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{
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(void)ptr;
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return;
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}
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