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fixes to writing to memory on linux

develop
Petr Mrázek 2009-10-29 19:22:12 +00:00
parent f79076054d
commit 851e105556
2 changed files with 22 additions and 3 deletions
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10
library/LinuxMemAccess-memfiles.h
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@ -110,8 +110,12 @@ inline
void MwriteWord (uint32_t offset, uint16_t data) void MwriteWord (uint32_t offset, uint16_t data)
{ {
uint32_t orig = MreadDWord(offset); uint32_t orig = MreadDWord(offset);
orig &= 0xFFFF0000;
orig |= data;
/*
orig |= 0x0000FFFF; orig |= 0x0000FFFF;
orig &= data; orig &= data;
*/
ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig); ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig);
} }
@ -119,8 +123,12 @@ inline
void MwriteByte (uint32_t offset, uint8_t data) void MwriteByte (uint32_t offset, uint8_t data)
{ {
uint32_t orig = MreadDWord(offset); uint32_t orig = MreadDWord(offset);
orig &= 0xFFFFFF00;
orig |= data;
/*
orig |= 0x000000FF; orig |= 0x000000FF;
orig &= data; orig &= data;
*/
ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig); ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig);
} }
@ -168,7 +176,7 @@ const std::string MreadCString (uint32_t offset)
r = MreadByte(offset+counter); r = MreadByte(offset+counter);
temp_c[counter] = r; temp_c[counter] = r;
counter++; counter++;
} while (r); } while (r && counter < 255);
temp_c[counter] = 0; temp_c[counter] = 0;
temp = temp_c; temp = temp_c;
return temp; return temp;

15
library/LinuxMemAccess-ptrace.h
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@ -94,6 +94,9 @@ bool Mread ( uint32_t offset, uint32_t size, uint8_t *target)
return true; return true;
} }
/*
* WRITING
*/
inline inline
void MwriteDWord (uint32_t offset, uint32_t data) void MwriteDWord (uint32_t offset, uint32_t data)
@ -106,8 +109,12 @@ inline
void MwriteWord (uint32_t offset, uint16_t data) void MwriteWord (uint32_t offset, uint16_t data)
{ {
uint32_t orig = MreadDWord(offset); uint32_t orig = MreadDWord(offset);
orig &= 0xFFFF0000;
orig |= data;
/*
orig |= 0x0000FFFF; orig |= 0x0000FFFF;
orig &= data; orig &= data;
*/
ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig); ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig);
} }
@ -115,8 +122,12 @@ inline
void MwriteByte (uint32_t offset, uint8_t data) void MwriteByte (uint32_t offset, uint8_t data)
{ {
uint32_t orig = MreadDWord(offset); uint32_t orig = MreadDWord(offset);
orig &= 0xFFFFFF00;
orig |= data;
/*
orig |= 0x000000FF; orig |= 0x000000FF;
orig &= data; orig &= data;
*/
ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig); ptrace(PTRACE_POKEDATA,g_ProcessHandle, offset, orig);
} }
@ -164,8 +175,8 @@ const std::string MreadCString (uint32_t offset)
r = MreadByte(offset+counter); r = MreadByte(offset+counter);
temp_c[counter] = r; temp_c[counter] = r;
counter++; counter++;
} while (r); } while (r && counter < 255);
temp_c[counter] = 0; temp_c[counter] = 0;
temp = temp_c; temp = temp_c;
return temp; return temp;
} }