338 lines
7.7 KiB
C++
338 lines
7.7 KiB
C++
#include "types.h"
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#include "cfg/cfg.h"
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#if HOST_OS==OS_LINUX || HOST_OS == OS_DARWIN
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#if HOST_OS == OS_DARWIN
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#define _XOPEN_SOURCE 1
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#define __USE_GNU 1
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#include <TargetConditionals.h>
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#endif
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#if !defined(TARGET_NACL32)
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#include <poll.h>
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#include <termios.h>
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#endif
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//#include <curses.h>
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#include <fcntl.h>
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#include <semaphore.h>
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#include <stdarg.h>
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#include <signal.h>
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#include <sys/param.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#if !defined(TARGET_BSD) && !defined(_ANDROID) && !defined(TARGET_IPHONE) && !defined(TARGET_NACL32) && !defined(TARGET_EMSCRIPTEN) && !defined(TARGET_OSX)
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#include <sys/personality.h>
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#include <dlfcn.h>
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#endif
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#include <unistd.h>
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#include "hw/sh4/dyna/blockmanager.h"
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#include "linux/context.h"
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#include "hw/sh4/dyna/ngen.h"
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#if !defined(TARGET_NO_EXCEPTIONS)
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bool ngen_Rewrite(unat& addr,unat retadr,unat acc);
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u32* ngen_readm_fail_v2(u32* ptr,u32* regs,u32 saddr);
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bool VramLockedWrite(u8* address);
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bool BM_LockedWrite(u8* address);
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#if HOST_OS == OS_DARWIN
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void sigill_handler(int sn, siginfo_t * si, void *segfault_ctx) {
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rei_host_context_t ctx;
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context_from_segfault(&ctx, segfault_ctx);
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unat pc = (unat)ctx.pc;
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bool dyna_cde = (pc>(unat)CodeCache) && (pc<(unat)(CodeCache + CODE_SIZE));
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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);
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printf("Entering infiniloop");
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for (;;);
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printf("PC is used here %08X\n", pc);
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}
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#endif
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#if !defined(TARGET_NO_EXCEPTIONS)
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void fault_handler (int sn, siginfo_t * si, void *segfault_ctx)
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{
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rei_host_context_t ctx;
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context_from_segfault(&ctx, segfault_ctx);
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bool dyna_cde = ((unat)ctx.pc>(unat)CodeCache) && ((unat)ctx.pc<(unat)(CodeCache + CODE_SIZE));
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//ucontext_t* ctx=(ucontext_t*)ctxr;
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//printf("mprot hit @ ptr 0x%08X @@ code: %08X, %d\n",si->si_addr,ctx->uc_mcontext.arm_pc,dyna_cde);
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if (VramLockedWrite((u8*)si->si_addr) || BM_LockedWrite((u8*)si->si_addr))
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return;
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#if FEAT_SHREC == DYNAREC_JIT
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#if HOST_CPU==CPU_ARM
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else if (dyna_cde)
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{
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ctx.pc = (u32)ngen_readm_fail_v2((u32*)ctx.pc, ctx.r, (unat)si->si_addr);
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context_to_segfault(&ctx, segfault_ctx);
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}
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#elif HOST_CPU==CPU_X86
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else if (ngen_Rewrite((unat&)ctx.pc, *(unat*)ctx.esp, ctx.eax))
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{
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//remove the call from call stack
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ctx.esp += 4;
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//restore the addr from eax to ecx so it's valid again
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ctx.ecx = ctx.eax;
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context_to_segfault(&ctx, segfault_ctx);
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}
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#elif HOST_CPU == CPU_X64
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//x64 has no rewrite support
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#else
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#error JIT: Not supported arch
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#endif
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#endif
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else
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{
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printf("SIGSEGV @ %u (fault_handler+0x%u) ... %p -> was not in vram\n", ctx.pc, ctx.pc - (unat)fault_handler, si->si_addr);
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die("segfault");
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signal(SIGSEGV, SIG_DFL);
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}
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}
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#endif
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#endif
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void install_fault_handler (void)
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{
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#if !defined(TARGET_NO_EXCEPTIONS)
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struct sigaction act, segv_oact;
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memset(&act, 0, sizeof(act));
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act.sa_sigaction = fault_handler;
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sigemptyset(&act.sa_mask);
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act.sa_flags = SA_SIGINFO;
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sigaction(SIGSEGV, &act, &segv_oact);
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#if HOST_OS == OS_DARWIN
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//this is broken on osx/ios/mach in general
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sigaction(SIGBUS, &act, &segv_oact);
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act.sa_sigaction = sigill_handler;
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sigaction(SIGILL, &act, &segv_oact);
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#endif
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#endif
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}
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#if !defined(TARGET_NO_THREADS)
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//Thread class
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cThread::cThread(ThreadEntryFP* function,void* prm)
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{
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Entry=function;
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param=prm;
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}
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void cThread::Start()
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{
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pthread_create( (pthread_t*)&hThread, NULL, Entry, param);
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}
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void cThread::WaitToEnd()
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{
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pthread_join((pthread_t)hThread,0);
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}
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//End thread class
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#endif
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//cResetEvent Calss
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cResetEvent::cResetEvent(bool State,bool Auto)
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{
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//sem_init((sem_t*)hEvent, 0, State?1:0);
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verify(State==false&&Auto==true);
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pthread_mutex_init(&mutx, NULL);
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pthread_cond_init(&cond, NULL);
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}
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cResetEvent::~cResetEvent()
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{
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//Destroy the event object ?
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}
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void cResetEvent::Set()//Signal
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{
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pthread_mutex_lock( &mutx );
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state=true;
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pthread_cond_signal( &cond);
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pthread_mutex_unlock( &mutx );
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}
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void cResetEvent::Reset()//reset
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{
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pthread_mutex_lock( &mutx );
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state=false;
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pthread_mutex_unlock( &mutx );
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}
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void cResetEvent::Wait(u32 msec)//Wait for signal , then reset
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{
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verify(false);
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}
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void cResetEvent::Wait()//Wait for signal , then reset
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{
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pthread_mutex_lock( &mutx );
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if (!state)
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{
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pthread_cond_wait( &cond, &mutx );
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}
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state=false;
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pthread_mutex_unlock( &mutx );
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}
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//End AutoResetEvent
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#include <errno.h>
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void VArray2::LockRegion(u32 offset,u32 size)
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{
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#if !defined(TARGET_NO_EXCEPTIONS)
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u32 inpage=offset & PAGE_MASK;
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u32 rv=mprotect (data+offset-inpage, size+inpage, PROT_READ );
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if (rv!=0)
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{
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printf("mprotect(%8s,%08X,R) failed: %d | %d\n",data+offset-inpage,size+inpage,rv,errno);
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die("mprotect failed ..\n");
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}
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#else
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printf("VA2: LockRegion\n");
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#endif
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}
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void print_mem_addr()
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{
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FILE *ifp, *ofp;
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char outputFilename[] = "/data/data/com.reicast.emulator/files/mem_alloc.txt";
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ifp = fopen("/proc/self/maps", "r");
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if (ifp == NULL) {
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fprintf(stderr, "Can't open input file /proc/self/maps!\n");
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exit(1);
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}
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ofp = fopen(outputFilename, "w");
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if (ofp == NULL) {
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fprintf(stderr, "Can't open output file %s!\n",
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outputFilename);
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#if HOST_OS == OS_LINUX
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ofp = stderr;
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#else
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exit(1);
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#endif
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}
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char line [ 512 ];
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while (fgets(line, sizeof line, ifp) != NULL) {
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fprintf(ofp, "%s", line);
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}
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fclose(ifp);
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if (ofp != stderr)
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fclose(ofp);
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}
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void VArray2::UnLockRegion(u32 offset,u32 size)
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{
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#if !defined(TARGET_NO_EXCEPTIONS)
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u32 inpage=offset & PAGE_MASK;
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u32 rv=mprotect (data+offset-inpage, size+inpage, PROT_READ | PROT_WRITE);
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if (rv!=0)
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{
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print_mem_addr();
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printf("mprotect(%8p,%08X,RW) failed: %d | %d\n",data+offset-inpage,size+inpage,rv,errno);
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die("mprotect failed ..\n");
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}
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#else
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printf("VA2: UnLockRegion\n");
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#endif
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}
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double os_GetSeconds()
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{
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timeval a;
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gettimeofday (&a,0);
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static u64 tvs_base=a.tv_sec;
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return a.tv_sec-tvs_base+a.tv_usec/1000000.0;
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}
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#if TARGET_IPHONE
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void os_DebugBreak() {
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__asm__("trap");
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}
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#elif HOST_OS != OS_LINUX
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void os_DebugBreak()
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{
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__builtin_trap();
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}
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#endif
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void enable_runfast()
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{
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#if HOST_CPU==CPU_ARM && !defined(ARMCC)
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static const unsigned int x = 0x04086060;
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static const unsigned int y = 0x03000000;
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int r;
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asm volatile (
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"fmrx %0, fpscr \n\t" //r0 = FPSCR
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"and %0, %0, %1 \n\t" //r0 = r0 & 0x04086060
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"orr %0, %0, %2 \n\t" //r0 = r0 | 0x03000000
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"fmxr fpscr, %0 \n\t" //FPSCR = r0
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: "=r"(r)
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: "r"(x), "r"(y)
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);
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printf("ARM VFP-Run Fast (NFP) enabled !\n");
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#endif
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}
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void linux_fix_personality() {
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#if !defined(TARGET_BSD) && !defined(_ANDROID) && !defined(TARGET_OS_MAC) && !defined(TARGET_NACL32) && !defined(TARGET_EMSCRIPTEN)
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printf("Personality: %08X\n", personality(0xFFFFFFFF));
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personality(~READ_IMPLIES_EXEC & personality(0xFFFFFFFF));
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printf("Updated personality: %08X\n", personality(0xFFFFFFFF));
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#endif
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}
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void linux_rpi2_init() {
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#if !defined(TARGET_BSD) && !defined(_ANDROID) && !defined(TARGET_NACL32) && !defined(TARGET_EMSCRIPTEN) && defined(TARGET_VIDEOCORE)
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void* handle;
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void (*rpi_bcm_init)(void);
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handle = dlopen("libbcm_host.so", RTLD_LAZY);
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if (handle) {
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printf("found libbcm_host\n");
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*(void**) (&rpi_bcm_init) = dlsym(handle, "bcm_host_init");
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if (rpi_bcm_init) {
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printf("rpi2: bcm_init\n");
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rpi_bcm_init();
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}
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}
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#endif
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}
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void common_linux_setup()
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{
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linux_fix_personality();
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linux_rpi2_init();
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enable_runfast();
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install_fault_handler();
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signal(SIGINT, exit);
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settings.profile.run_counts=0;
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printf("Linux paging: %ld %08X %08X\n",sysconf(_SC_PAGESIZE),PAGE_SIZE,PAGE_MASK);
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verify(PAGE_MASK==(sysconf(_SC_PAGESIZE)-1));
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}
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#endif
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