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63 lines
2.6 KiB
C
63 lines
2.6 KiB
C
#include <stdint.h>
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#include <string.h>
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#include "patcher.h"
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//***********************************************************************
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//* Поиск сигнатуры и наложение патча
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//***********************************************************************
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uint32_t patch(struct defpatch fp, uint8_t* buf, uint32_t fsize) {
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// накладываемый патч - mov r0,#0
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const char nop0[4]={0, 0, 0xa0, 0xe3};
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uint32_t i;
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for(i=8;i<(fsize-60);i+=4) {
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if (memcmp(buf+i,fp.sig, fp.sigsize) == 0) {
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// найдена сигнатура - накладываем патч и уходим
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memcpy(buf+i+fp.sigsize+fp.poffset,nop0,4);
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return i;
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}
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}
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// сигнатрура не найдена
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return 0;
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}
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//**********************************************
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// Описатели патчей
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//**********************************************
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const char sigburn_v7r11[]={
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0x00, 0x00, 0x50, 0xE3, 0x70, 0x80, 0xBD, 0x08, 0x00, 0x30, 0xA0, 0xE3,
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0x4E, 0x26, 0x04, 0xE3, 0xE0, 0x3F, 0x44, 0xE3, 0x55, 0x22, 0x44, 0xE3,
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0x4C, 0x01, 0x9F, 0xE5, 0x4E, 0xC6, 0x04, 0xE3, 0x48, 0x41, 0x9F, 0xE5,
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0x02, 0x10, 0xA0, 0xE1, 0x4C, 0xC4, 0x44, 0xE3, 0x5C, 0x23, 0x83, 0xE5,
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0x00, 0x00, 0x8F, 0xE0, 0x40, 0xC3, 0x83, 0xE5};
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const char sigburn_v7r2[]={
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0x00, 0x30, 0xA0, 0xE3, 0x9A, 0x3F, 0x07, 0xEE, 0xFF, 0x2F, 0x0F, 0xE3,
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0xE1, 0x2F, 0x44, 0xE3, 0x07, 0x30, 0x02, 0xE5, 0x9A, 0x3F, 0x07, 0xEE,
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0x00, 0x40, 0xA0, 0xE3, 0xE0, 0x4F, 0x44, 0xE3, 0x4E, 0x36, 0x04, 0xE3,
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0x4C, 0x34, 0x44, 0xE3, 0x30, 0x33, 0x84, 0xE5};
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const char sigburn_v7r1[]={
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0x3D, 0xE2, 0xE0, 0xE3, 0x00, 0xE0, 0x9E, 0xE5, 0x5C, 0xC3, 0x9F, 0xE5,
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0x0C, 0x00, 0x5E, 0xE1, 0x00, 0x00, 0x00, 0x0A};
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const char sigbad[]={0x04, 0x10, 0x8D, 0xE2, 0x04, 0x00, 0xA0, 0xE1};
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struct defpatch patch_v7r11={sigburn_v7r11, sizeof(sigburn_v7r11), 4};
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struct defpatch patch_v7r2={sigburn_v7r2, sizeof(sigburn_v7r2), 16};
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struct defpatch patch_v7r1={sigburn_v7r1, sizeof(sigburn_v7r1), 0};
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struct defpatch patch_erasebad={sigbad, sizeof(sigbad), 0};
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//****************************************************
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//* Процедуры патча под разные чипсеты и задачи
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//****************************************************
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uint32_t pv7r2 (uint8_t* buf, uint32_t fsize) { return patch(patch_v7r2, buf, fsize); }
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uint32_t pv7r11 (uint8_t* buf, uint32_t fsize) { return patch(patch_v7r11, buf, fsize); }
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uint32_t pv7r1 (uint8_t* buf, uint32_t fsize) { return patch(patch_v7r1, buf, fsize); }
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uint32_t perasebad (uint8_t* buf, uint32_t fsize) { return patch(patch_erasebad, buf, fsize); }
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