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Implement strtok in SYSCLIB.

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This commit is contained in:
Jean-Philip Desjardins 2017-05-24 22:08:12 -04:00
parent 0af2355c52
commit 285cc21778
2 changed files with 46 additions and 0 deletions
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43
Source/iop/Iop_Sysclib.cpp
View File

@ -83,6 +83,9 @@ std::string CSysclib::GetFunctionName(unsigned int functionId) const
case 34:
return "strstr";
break;
case 35:
return "strtok";
break;
case 36:
return "strtol";
break;
@ -228,6 +231,12 @@ void CSysclib::Invoke(CMIPS& context, unsigned int functionId)
context.m_State.nGPR[CMIPS::A1].nV0
);
break;
case 35:
context.m_State.nGPR[CMIPS::V0].nD0 = __strtok(
context.m_State.nGPR[CMIPS::A0].nV0,
context.m_State.nGPR[CMIPS::A1].nV0
);
break;
case 36:
context.m_State.nGPR[CMIPS::V0].nD0 = static_cast<int32>(__strtol(
context.m_State.nGPR[CMIPS::A0].nV0,
@ -456,6 +465,40 @@ uint32 CSysclib::__strstr(uint32 str1Ptr, uint32 str2Ptr)
return str1Ptr + ptrDiff;
}
uint32 CSysclib::__strtok(uint32 sPtr, uint32 delimPtr)
{
auto delim = reinterpret_cast<const char*>(m_ram + delimPtr);
if(sPtr != 0)
{
m_strtok_prevSPtr = sPtr;
}
else if(m_strtok_prevSPtr == 0)
{
//If sPtr == 0 && prevSPtr == 0
return 0;
}
auto s = reinterpret_cast<char*>(m_ram + m_strtok_prevSPtr);
auto str = s + strspn(s, delim);
s = str + strcspn(str, delim);
if(s == str)
{
m_strtok_prevSPtr = 0;
return 0;
}
if(*s)
{
(*s) = 0;
m_strtok_prevSPtr = (reinterpret_cast<uint8*>(s) - m_ram) + 1;
}
else
{
m_strtok_prevSPtr = 0;
}
return reinterpret_cast<uint8*>(str) - m_ram;
}
uint32 CSysclib::__strcspn(uint32 str1Ptr, uint32 str2Ptr)
{
auto str1 = reinterpret_cast<const char*>(m_ram + str1Ptr);

3
Source/iop/Iop_Sysclib.h
View File

@ -52,12 +52,15 @@ namespace Iop
uint32 __strchr(uint32, uint32);
uint32 __strrchr(uint32, uint32);
uint32 __strstr(uint32, uint32);
uint32 __strtok(uint32, uint32);
uint32 __strcspn(uint32, uint32);
uint32 __strtol(uint32, uint32, uint32);
uint32 __wmemcopy(uint32, uint32, uint32);
uint32 __vsprintf(CMIPS&, uint32, uint32, uint32);
uint8* m_ram = nullptr;
uint8* m_spr = nullptr;
uint32 m_strtok_prevSPtr = 0;
CStdio& m_stdio;
};
}