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in fault_handler -> ../../core/linux/common.cpp : 99
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-------------------------------------------------------------------------------------------------
core/linux/common.cpp
-------------------------------------------------------------------------------------------------
#if !defined(TARGET_NO_EXCEPTIONS)
bool ngen_Rewrite(unat& addr,unat retadr,unat acc);
u32* ngen_readm_fail_v2(u32* ptr,u32* regs,u32 saddr);
bool VramLockedWrite(u8* address);
bool BM_LockedWrite(u8* address);
#if HOST_OS == OS_DARWIN
void sigill_handler(int sn, siginfo_t * si, void *segfault_ctx) {
rei_host_context_t ctx;
context_from_segfault(&ctx, segfault_ctx);
unat pc = (unat)ctx.pc;
bool dyna_cde = (pc>(unat)CodeCache) && (pc<(unat)(CodeCache + CODE_SIZE));
printf("SIGILL @ %08X, fault_handler+0x%08X ... %08X -> was not in vram, %d\n", pc, pc - (unat)sigill_handler, (unat)si->si_addr, dyna_cde);
printf("Entering infiniloop");
for (;;);
printf("PC is used here %08X\n", pc);
}
#endif
#if !defined(TARGET_NO_EXCEPTIONS)
void fault_handler (int sn, siginfo_t * si, void *segfault_ctx)
{
rei_host_context_t ctx;
context_from_segfault(&ctx, segfault_ctx);
bool dyna_cde = ((unat)ctx.pc>(unat)CodeCache) && ((unat)ctx.pc<(unat)(CodeCache + CODE_SIZE));
//ucontext_t* ctx=(ucontext_t*)ctxr;
//printf("mprot hit @ ptr 0x%08X @@ code: %08X, %d\n",si->si_addr,ctx->uc_mcontext.arm_pc,dyna_cde);
if (VramLockedWrite((u8*)si->si_addr) || BM_LockedWrite((u8*)si->si_addr))
return;
#if FEAT_SHREC == DYNAREC_JIT
#if HOST_CPU==CPU_ARM
else if (dyna_cde)
{
ctx.pc = (u32)ngen_readm_fail_v2((u32*)ctx.pc, ctx.r, (unat)si->si_addr);
context_to_segfault(&ctx, segfault_ctx);
}
#elif HOST_CPU==CPU_X86
else if (ngen_Rewrite((unat&)ctx.pc, *(unat*)ctx.esp, ctx.eax))
{
//remove the call from call stack
ctx.esp += 4;
//restore the addr from eax to ecx so it's valid again
ctx.ecx = ctx.eax;
context_to_segfault(&ctx, segfault_ctx);
}
#elif HOST_CPU == CPU_X64
//x64 has no rewrite support
#else
#error JIT: Not supported arch
#endif
#endif
else
{
printf("SIGSEGV @ %p (fault_handler+0x%p) ... %p -> was not in vram\n", ctx.pc, ctx.pc - (unat)fault_handler, si->si_addr);
die("segfault");
signal(SIGSEGV, SIG_DFL);
}
}
#endif
-------------------------------------------------------------------------------------------------
Error on : VramLockedWrite (video-ram - 8MB) || BM_LockedWrite (motherboard-ram - 16MB)
-------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------
core/hw/mem/_vmem.cpp
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bool BM_LockedWrite(u8* address)
{
if (!_nvmem_enabled())
return false;
#if FEAT_SHREC != DYNAREC_NONE
u32 addr=address-(u8*)p_sh4rcb->fpcb;
address=(u8*)p_sh4rcb->fpcb+ (addr&~PAGE_MASK);
if (addr<sizeof(p_sh4rcb->fpcb))
{
//printf("Allocated %d PAGES [%08X]\n",++pagecnt,addr);
#if HOST_OS==OS_WINDOWS
verify(VirtualAlloc(address,PAGE_SIZE,MEM_COMMIT,PAGE_READWRITE));
#else
mprotect (address, PAGE_SIZE, PROT_READ | PROT_WRITE);
#endif
bm_vmem_pagefill((void**)address,PAGE_SIZE);
return true;
}
#else
die("BM_LockedWrite and NO REC");
#endif
return false;
}
-------------------------------------------------------------------------------------------------
core/rend/TexCache.cpp
-------------------------------------------------------------------------------------------------
bool VramLockedWrite(u8* address)
{
size_t offset=address-vram.data;
if (offset<VRAM_SIZE)
{
size_t addr_hash = offset/PAGE_SIZE;
vector<vram_block*>* list=&VramLocks[addr_hash];
{
vramlist_lock.Lock();
for (size_t i=0;i<list->size();i++)
{
if ((*list)[i])
{
libPvr_LockedBlockWrite((*list)[i],(u32)offset);
if ((*list)[i])
{
msgboxf("Error : pvr is supposed to remove lock",MBX_OK);
dbgbreak;
}
}
}
list->clear();
vram.UnLockRegion((u32)offset&(~(PAGE_SIZE-1)),PAGE_SIZE);
//TODO: Fix this for 32M wrap as well
if (_nvmem_enabled() && VRAM_SIZE == 0x800000) {
vram.UnLockRegion((u32)offset&(~(PAGE_SIZE-1)) + VRAM_SIZE,PAGE_SIZE);
}
vramlist_lock.Unlock();
}
return true;
}
else
return false;
}
-------------------------------------------------------------------------------------------------
core/rend/TexCache.h
-------------------------------------------------------------------------------------------------
void vram_LockedWrite(u32 offset64);
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core/stdclass.cpp
-------------------------------------------------------------------------------------------------
bool VramLockedWrite(u8* address);
bool RamLockedWrite(u8* address,u32* sp);
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