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163
PORTING/MALLOC/malloc.c
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163
PORTING/MALLOC/malloc.c
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#include "malloc.h"
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//////////////////////////////////////////////////////////////////////////////////
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB>ѧϰʹ<CFB0>ã<EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><C9A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κ<EFBFBD><CEBA><EFBFBD>;
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//ALIENTEK STM32<33><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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//<2F><><EFBFBD><EFBFBD>ԭ<EFBFBD><D4AD>@ALIENTEK
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̳:www.openedv.com
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:2016/1/13
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//<2F>汾<EFBFBD><E6B1BE>V1.0
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//<2F><>Ȩ<EFBFBD><C8A8><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؾ<EFBFBD><D8BE><EFBFBD>
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//Copyright(C) <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿƼ<D3BF><C6BC><EFBFBD><EFBFBD><EFBFBD>˾ 2014-2024
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//All rights reserved
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//////////////////////////////////////////////////////////////////////////////////
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//<2F>ڴ<EFBFBD><DAB4><EFBFBD>(32<33>ֽڶ<D6BD><DAB6><EFBFBD>) //<2F>ڲ<EFBFBD>SRAM<41>ڴ<EFBFBD><DAB4><EFBFBD>
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__align(32) u8 mem2base[MEM2_MAX_SIZE] __attribute__((at(0XC01F4000))); //<2F>ⲿSDRAM<41>ڴ<EFBFBD><DAB4><EFBFBD>,ǰ<><C7B0>2M<32><4D>LTDC<44><43><EFBFBD><EFBFBD>(1280*800*2)
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//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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u32 mem2mapbase[MEM2_ALLOC_TABLE_SIZE] __attribute__((at(0XC01F4000+MEM2_MAX_SIZE))); //<2F>ⲿSRAM<41>ڴ<EFBFBD><DAB4><EFBFBD>MAP
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//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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const u32 memtblsize[SRAMBANK]={MEM2_ALLOC_TABLE_SIZE}; //<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
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const u32 memblksize[SRAMBANK]={MEM2_BLOCK_SIZE}; //<2F>ڴ<EFBFBD><DAB4>ֿ<EFBFBD><D6BF><EFBFBD>С
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const u32 memsize[SRAMBANK]={MEM2_MAX_SIZE}; //<2F>ڴ<EFBFBD><DAB4>ܴ<EFBFBD>С
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//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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struct _m_mallco_dev mallco_dev=
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{
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my_mem_init, //<2F>ڴ<EFBFBD><DAB4><EFBFBD>ʼ<EFBFBD><CABC>
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my_mem_perused, //<2F>ڴ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD>
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mem2base, //<2F>ڴ<EFBFBD><DAB4><EFBFBD>
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mem2mapbase, //<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>״̬<D7B4><CCAC>
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0, //<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
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};
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//<2F><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>
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//*des:Ŀ<>ĵ<EFBFBD>ַ
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//*src:Դ<><D4B4>ַ
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//n:<3A><>Ҫ<EFBFBD><D2AA><EFBFBD>Ƶ<EFBFBD><C6B5>ڴ泤<DAB4><E6B3A4>(<28>ֽ<EFBFBD>Ϊ<EFBFBD><CEAA>λ)
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void mymemcpy(void *des,void *src,u32 n)
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{
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u8 *xdes=des;
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u8 *xsrc=src;
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while(n--)*xdes++=*xsrc++;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>
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//*s:<3A>ڴ<EFBFBD><DAB4><EFBFBD>ַ
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//c :Ҫ<><D2AA><EFBFBD>õ<EFBFBD>ֵ
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//count:<3A><>Ҫ<EFBFBD><D2AA><EFBFBD>õ<EFBFBD><C3B5>ڴ<EFBFBD><DAB4><EFBFBD>С(<28>ֽ<EFBFBD>Ϊ<EFBFBD><CEAA>λ)
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void mymemset(void *s,u8 c,u32 count)
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{
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u8 *xs = s;
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while(count--)*xs++=c;
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}
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//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>
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//memx:<3A><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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void my_mem_init(u8 memx)
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{
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mymemset(mallco_dev.memmap[memx],0,memtblsize[memx]*4); //<2F>ڴ<EFBFBD>״̬<D7B4><CCAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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mallco_dev.memrdy[memx]=1; //<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>OK
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}
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//<2F><>ȡ<EFBFBD>ڴ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD>
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//memx:<3A><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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//<2F><><EFBFBD><EFBFBD>ֵ:ʹ<><CAB9><EFBFBD><EFBFBD>(<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>10<31><30>,0~1000,<2C><><EFBFBD><EFBFBD>0.0%~100.0%)
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u16 my_mem_perused(u8 memx)
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{
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u32 used=0;
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u32 i;
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for(i=0;i<memtblsize[memx];i++)
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{
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if(mallco_dev.memmap[memx][i])used++;
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}
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return (used*1000)/(memtblsize[memx]);
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}
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//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>(<28>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD>)
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//memx:<3A><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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//size:Ҫ<><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>С(<28>ֽ<EFBFBD>)
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//<2F><><EFBFBD><EFBFBD>ֵ:0XFFFFFFFF,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;<3B><><EFBFBD><EFBFBD>,<2C>ڴ<EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
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u32 my_mem_malloc(u8 memx,u32 size)
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{
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signed long offset=0;
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u32 nmemb; //<2F><>Ҫ<EFBFBD><D2AA><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>
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u32 cmemb=0;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>
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u32 i;
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if(!mallco_dev.memrdy[memx])mallco_dev.init(memx);//δ<><CEB4>ʼ<EFBFBD><CABC>,<2C><>ִ<EFBFBD>г<EFBFBD>ʼ<EFBFBD><CABC>
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if(size==0)return 0XFFFFFFFF;//<2F><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>
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nmemb=size/memblksize[memx]; //<2F><>ȡ<EFBFBD><C8A1>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>
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if(size%memblksize[memx])nmemb++;
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for(offset=memtblsize[memx]-1;offset>=0;offset--)//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{
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if(!mallco_dev.memmap[memx][offset])cmemb++;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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else cmemb=0; //<2F><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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if(cmemb==nmemb) //<2F>ҵ<EFBFBD><D2B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>nmemb<6D><62><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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{
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for(i=0;i<nmemb;i++) //<2F><>ע<EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>ǿ<EFBFBD>
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{
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mallco_dev.memmap[memx][offset+i]=nmemb;
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}
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return (offset*memblksize[memx]);//<2F><><EFBFBD><EFBFBD>ƫ<EFBFBD>Ƶ<EFBFBD>ַ
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}
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}
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return 0XFFFFFFFF;//δ<>ҵ<EFBFBD><D2B5><EFBFBD><EFBFBD>Ϸ<EFBFBD><CFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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}
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//<2F>ͷ<EFBFBD><CDB7>ڴ<EFBFBD>(<28>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD>)
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//memx:<3A><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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//offset:<3A>ڴ<EFBFBD><DAB4><EFBFBD>ַƫ<D6B7><C6AB>
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//<2F><><EFBFBD><EFBFBD>ֵ:0,<2C>ͷųɹ<C5B3>;1,<2C>ͷ<EFBFBD>ʧ<EFBFBD><CAA7>;
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u8 my_mem_free(u8 memx,u32 offset)
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{
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int i;
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if(!mallco_dev.memrdy[memx])//δ<><CEB4>ʼ<EFBFBD><CABC>,<2C><>ִ<EFBFBD>г<EFBFBD>ʼ<EFBFBD><CABC>
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{
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mallco_dev.init(memx);
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return 1;//δ<><CEB4>ʼ<EFBFBD><CABC>
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}
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if(offset<memsize[memx])//ƫ<><C6AB><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>.
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{
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int index=offset/memblksize[memx]; //ƫ<><C6AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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int nmemb=mallco_dev.memmap[memx][index]; //<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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for(i=0;i<nmemb;i++) //<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{
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mallco_dev.memmap[memx][index+i]=0;
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}
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return 0;
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}else return 2;//ƫ<>Ƴ<EFBFBD><C6B3><EFBFBD><EFBFBD><EFBFBD>.
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}
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//<2F>ͷ<EFBFBD><CDB7>ڴ<EFBFBD>(<28>ⲿ<EFBFBD><E2B2BF><EFBFBD><EFBFBD>)
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//memx:<3A><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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//ptr:<3A>ڴ<EFBFBD><DAB4><EFBFBD>ַ
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void myfree(u8 memx,void *ptr)
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{
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u32 offset;
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if(ptr==NULL)return;//<2F><>ַΪ0.
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offset=(u32)ptr-(u32)mallco_dev.membase[memx];
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my_mem_free(memx,offset); //<2F>ͷ<EFBFBD><CDB7>ڴ<EFBFBD>
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>(<28>ⲿ<EFBFBD><E2B2BF><EFBFBD><EFBFBD>)
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//memx:<3A><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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//size:<3A>ڴ<EFBFBD><DAB4><EFBFBD>С(<28>ֽ<EFBFBD>)
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//<2F><><EFBFBD><EFBFBD>ֵ:<3A><><EFBFBD>䵽<EFBFBD><E4B5BD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>ַ.
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void *mymalloc(u8 memx,u32 size)
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{
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u32 offset;
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offset=my_mem_malloc(memx,size);
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if(offset==0XFFFFFFFF)return NULL;
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else return (void*)((u32)mallco_dev.membase[memx]+offset);
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}
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//<2F><><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD>ڴ<EFBFBD>(<28>ⲿ<EFBFBD><E2B2BF><EFBFBD><EFBFBD>)
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//memx:<3A><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
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//*ptr:<3A><><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>ַ
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//size:Ҫ<><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>С(<28>ֽ<EFBFBD>)
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//<2F><><EFBFBD><EFBFBD>ֵ:<3A>·<EFBFBD><C2B7>䵽<EFBFBD><E4B5BD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>ַ.
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void *myrealloc(u8 memx,void *ptr,u32 size)
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{
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u32 offset;
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offset=my_mem_malloc(memx,size);
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if(offset==0XFFFFFFFF)return NULL;
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else
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{
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mymemcpy((void*)((u32)mallco_dev.membase[memx]+offset),ptr,size); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD><EFBFBD>ڴ<EFBFBD>
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myfree(memx,ptr); //<2F>ͷž<CDB7><C5BE>ڴ<EFBFBD>
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return (void*)((u32)mallco_dev.membase[memx]+offset); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>ַ
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}
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}
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