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sh2.cpp/sh4.cpp: Don't emit fast RAM accesses when the debugger is enabled [Phil Bennett]

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This commit is contained in:
Philip Bennett 2019-09-24 23:23:06 -07:00
parent 4af1e38970
commit 6e63799772
2 changed files with 100 additions and 94 deletions
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95
src/devices/cpu/sh/sh2.cpp
View File

@ -1058,61 +1058,64 @@ void sh2_device::static_generate_memory_accessor(int size, int iswrite, const ch
UML_LABEL(block, label++); // label:
for (auto & elem : m_fastram)
if ((machine().debug_flags & DEBUG_FLAG_ENABLED) == 0)
{
if (elem.base != nullptr && (!iswrite || !elem.readonly))
for (auto & elem : m_fastram)
{
void *fastbase = (uint8_t *)elem.base - elem.start;
uint32_t skip = label++;
if (elem.end != 0xffffffff)
if (elem.base != nullptr && (!iswrite || !elem.readonly))
{
UML_CMP(block, I0, elem.end); // cmp i0,end
UML_JMPc(block, COND_A, skip); // ja skip
}
if (elem.start != 0x00000000)
{
UML_CMP(block, I0, elem.start);// cmp i0,fastram_start
UML_JMPc(block, COND_B, skip); // jb skip
}
void *fastbase = (uint8_t *)elem.base - elem.start;
uint32_t skip = label++;
if (elem.end != 0xffffffff)
{
UML_CMP(block, I0, elem.end); // cmp i0,end
UML_JMPc(block, COND_A, skip); // ja skip
}
if (elem.start != 0x00000000)
{
UML_CMP(block, I0, elem.start);// cmp i0,fastram_start
UML_JMPc(block, COND_B, skip); // jb skip
}
if (!iswrite)
{
if (size == 1)
if (!iswrite)
{
UML_XOR(block, I0, I0, BYTE4_XOR_BE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_BYTE, SCALE_x1); // load i0,fastbase,i0,byte
if (size == 1)
{
UML_XOR(block, I0, I0, BYTE4_XOR_BE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_BYTE, SCALE_x1); // load i0,fastbase,i0,byte
}
else if (size == 2)
{
UML_XOR(block, I0, I0, WORD_XOR_BE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_WORD, SCALE_x1); // load i0,fastbase,i0,word_x1
}
else if (size == 4)
{
UML_LOAD(block, I0, fastbase, I0, SIZE_DWORD, SCALE_x1); // load i0,fastbase,i0,dword_x1
}
UML_RET(block); // ret
}
else if (size == 2)
else
{
UML_XOR(block, I0, I0, WORD_XOR_BE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_WORD, SCALE_x1); // load i0,fastbase,i0,word_x1
if (size == 1)
{
UML_XOR(block, I0, I0, BYTE4_XOR_BE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_BYTE, SCALE_x1);// store fastbase,i0,i1,byte
}
else if (size == 2)
{
UML_XOR(block, I0, I0, WORD_XOR_BE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_WORD, SCALE_x1);// store fastbase,i0,i1,word_x1
}
else if (size == 4)
{
UML_STORE(block, fastbase, I0, I1, SIZE_DWORD, SCALE_x1); // store fastbase,i0,i1,dword_x1
}
UML_RET(block); // ret
}
else if (size == 4)
{
UML_LOAD(block, I0, fastbase, I0, SIZE_DWORD, SCALE_x1); // load i0,fastbase,i0,dword_x1
}
UML_RET(block); // ret
}
else
{
if (size == 1)
{
UML_XOR(block, I0, I0, BYTE4_XOR_BE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_BYTE, SCALE_x1);// store fastbase,i0,i1,byte
}
else if (size == 2)
{
UML_XOR(block, I0, I0, WORD_XOR_BE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_WORD, SCALE_x1);// store fastbase,i0,i1,word_x1
}
else if (size == 4)
{
UML_STORE(block, fastbase, I0, I1, SIZE_DWORD, SCALE_x1); // store fastbase,i0,i1,dword_x1
}
UML_RET(block); // ret
}
UML_LABEL(block, skip); // skip:
UML_LABEL(block, skip); // skip:
}
}
}

99
src/devices/cpu/sh/sh4.cpp
View File

@ -2713,64 +2713,67 @@ void sh34_base_device::static_generate_memory_accessor(int size, int iswrite, co
UML_LABEL(block, label++); // label:
for (auto & elem : m_fastram)
if ((machine().debug_flags & DEBUG_FLAG_ENABLED) == 0)
{
if (elem.base != nullptr && (!iswrite || !elem.readonly))
for (auto & elem : m_fastram)
{
void *fastbase = (uint8_t *)elem.base - elem.start;
uint32_t skip = label++;
if (elem.end != 0xffffffff)
if (elem.base != nullptr && (!iswrite || !elem.readonly))
{
UML_CMP(block, I0, elem.end); // cmp i0,end
UML_JMPc(block, COND_A, skip); // ja skip
}
if (elem.start != 0x00000000)
{
UML_CMP(block, I0, elem.start);// cmp i0,fastram_start
UML_JMPc(block, COND_B, skip); // jb skip
}
void *fastbase = (uint8_t *)elem.base - elem.start;
uint32_t skip = label++;
if (elem.end != 0xffffffff)
{
UML_CMP(block, I0, elem.end); // cmp i0,end
UML_JMPc(block, COND_A, skip); // ja skip
}
if (elem.start != 0x00000000)
{
UML_CMP(block, I0, elem.start);// cmp i0,fastram_start
UML_JMPc(block, COND_B, skip); // jb skip
}
if (!iswrite)
{
if (size == 1)
{
UML_XOR(block, I0, I0, m_bigendian ? BYTE8_XOR_BE(0) : BYTE8_XOR_LE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_BYTE, SCALE_x1); // load i0,fastbase,i0,byte
}
else if (size == 2)
{
UML_XOR(block, I0, I0, m_bigendian ? WORD2_XOR_BE(0) : WORD2_XOR_LE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_WORD, SCALE_x1); // load i0,fastbase,i0,word_x1
}
else if (size == 4)
if (!iswrite)
{
if (size == 1)
{
UML_XOR(block, I0, I0, m_bigendian ? BYTE8_XOR_BE(0) : BYTE8_XOR_LE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_BYTE, SCALE_x1); // load i0,fastbase,i0,byte
}
else if (size == 2)
{
UML_XOR(block, I0, I0, m_bigendian ? WORD2_XOR_BE(0) : WORD2_XOR_LE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_WORD, SCALE_x1); // load i0,fastbase,i0,word_x1
}
else if (size == 4)
{
UML_XOR(block, I0, I0, m_bigendian ? DWORD_XOR_BE(0) : DWORD_XOR_LE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_DWORD, SCALE_x1); // load i0,fastbase,i0,dword_x1
UML_XOR(block, I0, I0, m_bigendian ? DWORD_XOR_BE(0) : DWORD_XOR_LE(0));
UML_LOAD(block, I0, fastbase, I0, SIZE_DWORD, SCALE_x1); // load i0,fastbase,i0,dword_x1
}
UML_RET(block); // ret
}
UML_RET(block); // ret
}
else
{
if (size == 1)
else
{
UML_XOR(block, I0, I0, m_bigendian ? BYTE8_XOR_BE(0) : BYTE8_XOR_LE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_BYTE, SCALE_x1);// store fastbase,i0,i1,byte
if (size == 1)
{
UML_XOR(block, I0, I0, m_bigendian ? BYTE8_XOR_BE(0) : BYTE8_XOR_LE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_BYTE, SCALE_x1);// store fastbase,i0,i1,byte
}
else if (size == 2)
{
UML_XOR(block, I0, I0, m_bigendian ? WORD2_XOR_BE(0) : WORD2_XOR_LE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_WORD, SCALE_x1);// store fastbase,i0,i1,word_x1
}
else if (size == 4)
{
UML_XOR(block, I0, I0, m_bigendian ? DWORD_XOR_BE(0) : DWORD_XOR_LE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_DWORD, SCALE_x1); // store fastbase,i0,i1,dword_x1
}
UML_RET(block); // ret
}
else if (size == 2)
{
UML_XOR(block, I0, I0, m_bigendian ? WORD2_XOR_BE(0) : WORD2_XOR_LE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_WORD, SCALE_x1);// store fastbase,i0,i1,word_x1
}
else if (size == 4)
{
UML_XOR(block, I0, I0, m_bigendian ? DWORD_XOR_BE(0) : DWORD_XOR_LE(0));
UML_STORE(block, fastbase, I0, I1, SIZE_DWORD, SCALE_x1); // store fastbase,i0,i1,dword_x1
}
UML_RET(block); // ret
}
UML_LABEL(block, skip); // skip:
UML_LABEL(block, skip); // skip:
}
}
}