#include <llvm/Target/TargetMachine.h>
#include <llvm/Target/TargetInstrInfo.h>
#include <llvm/Support/raw_ostream.h>
+#include <llvm/Support/Format.h>
+
+#if HAVE_LLVM >= 0x0306
+#include <llvm/Target/TargetSubtargetInfo.h>
+#else
#include <llvm/Support/MemoryObject.h>
+#endif
-#if HAVE_LLVM >= 0x0300
#include <llvm/Support/TargetRegistry.h>
-#include <llvm/Support/TargetSelect.h>
-#else /* HAVE_LLVM < 0x0300 */
-#include <llvm/Target/TargetRegistry.h>
-#include <llvm/Target/TargetSelect.h>
-#endif /* HAVE_LLVM < 0x0300 */
+#include <llvm/MC/MCSubtargetInfo.h>
-#if HAVE_LLVM >= 0x0209
#include <llvm/Support/Host.h>
-#else /* HAVE_LLVM < 0x0209 */
-#include <llvm/System/Host.h>
-#endif /* HAVE_LLVM < 0x0209 */
-#if HAVE_LLVM >= 0x0207
+#include <llvm/IR/Module.h>
+
#include <llvm/MC/MCDisassembler.h>
#include <llvm/MC/MCAsmInfo.h>
#include <llvm/MC/MCInst.h>
#include <llvm/MC/MCInstPrinter.h>
-#endif /* HAVE_LLVM >= 0x0207 */
+#include <llvm/MC/MCRegisterInfo.h>
+
+#if HAVE_LLVM >= 0x0305
+#define OwningPtr std::unique_ptr
+#else
+#include <llvm/ADT/OwningPtr.h>
+#endif
+
+#if HAVE_LLVM >= 0x0305
+#include <llvm/MC/MCContext.h>
+#endif
#include "util/u_math.h"
#include "util/u_debug.h"
#include "lp_bld_debug.h"
+#ifdef __linux__
+#include <sys/stat.h>
+#include <fcntl.h>
+#endif
+
/**
class raw_debug_ostream :
public llvm::raw_ostream
{
+private:
uint64_t pos;
+public:
+ raw_debug_ostream() : pos(0) { }
+
void write_impl(const char *Ptr, size_t Size);
- uint64_t current_pos() { return pos; }
- uint64_t current_pos() const { return pos; }
-#if HAVE_LLVM >= 0x207
- uint64_t preferred_buffer_size() { return 512; }
-#else
- size_t preferred_buffer_size() { return 512; }
-#endif
+ uint64_t current_pos() const { return pos; }
+ size_t preferred_buffer_size() const { return 512; }
};
}
+extern "C" const char *
+lp_get_module_id(LLVMModuleRef module)
+{
+ return llvm::unwrap(module)->getModuleIdentifier().c_str();
+}
+
+
/**
* Same as LLVMDumpValue, but through our debugging channels.
*/
}
-#if HAVE_LLVM >= 0x0207
+#if HAVE_LLVM < 0x0306
+
/*
* MemoryObject wrapper around a buffer of memory, to be used by MC
* disassembler.
return 0;
}
};
-#endif /* HAVE_LLVM >= 0x0207 */
+
+#endif /* HAVE_LLVM < 0x0306 */
/*
* - http://blog.llvm.org/2010/01/x86-disassembler.html
* - http://blog.llvm.org/2010/04/intro-to-llvm-mc-project.html
*/
-extern "C" void
-lp_disassemble(const void* func)
+static size_t
+disassemble(const void* func, llvm::raw_ostream & Out)
{
-#if HAVE_LLVM >= 0x0207
using namespace llvm;
const uint8_t *bytes = (const uint8_t *)func;
/*
* Limit disassembly to this extent
*/
- const uint64_t extent = 0x10000;
+ const uint64_t extent = 96 * 1024;
uint64_t max_pc = 0;
* Initialize all used objects.
*/
-#if HAVE_LLVM >= 0x0301
std::string Triple = sys::getDefaultTargetTriple();
-#else
- std::string Triple = sys::getHostTriple();
-#endif
std::string Error;
const Target *T = TargetRegistry::lookupTarget(Triple, Error);
-#if HAVE_LLVM >= 0x0208
- InitializeNativeTargetAsmPrinter();
-#elif LLVM_NATIVE_ARCH == X86Target
- LLVMInitializeX86AsmPrinter();
-#elif LLVM_NATIVE_ARCH == ARMTarget
- LLVMInitializeARMAsmPrinter();
-#endif
-
-#if (LLVM_NATIVE_ARCH == X86 || LLVM_NATIVE_ARCH == X86Target)
- LLVMInitializeX86Disassembler();
-#elif (LLVM_NATIVE_ARCH == ARM || LLVM_NATIVE_ARCH == ARMTarget)
- LLVMInitializeARMDisassembler();
-#endif
-
-#if HAVE_LLVM >= 0x0300
- OwningPtr<const MCAsmInfo> AsmInfo(T->createMCAsmInfo(Triple));
+#if HAVE_LLVM >= 0x0304
+ OwningPtr<const MCAsmInfo> AsmInfo(T->createMCAsmInfo(*T->createMCRegInfo(Triple), Triple));
#else
- OwningPtr<const MCAsmInfo> AsmInfo(T->createAsmInfo(Triple));
+ OwningPtr<const MCAsmInfo> AsmInfo(T->createMCAsmInfo(Triple));
#endif
if (!AsmInfo) {
- debug_printf("error: no assembly info for target %s\n", Triple.c_str());
- return;
+ Out << "error: no assembly info for target " << Triple << "\n";
+ Out.flush();
+ return 0;
}
-#if HAVE_LLVM >= 0x0300
- const MCSubtargetInfo *STI = T->createMCSubtargetInfo(Triple, sys::getHostCPUName(), "");
- OwningPtr<const MCDisassembler> DisAsm(T->createMCDisassembler(*STI));
-#else
- OwningPtr<const MCDisassembler> DisAsm(T->createMCDisassembler());
-#endif
- if (!DisAsm) {
- debug_printf("error: no disassembler for target %s\n", Triple.c_str());
- return;
+ unsigned int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
+
+ OwningPtr<const MCRegisterInfo> MRI(T->createMCRegInfo(Triple));
+ if (!MRI) {
+ Out << "error: no register info for target " << Triple.c_str() << "\n";
+ Out.flush();
+ return 0;
}
- raw_debug_ostream Out;
+ OwningPtr<const MCInstrInfo> MII(T->createMCInstrInfo());
+ if (!MII) {
+ Out << "error: no instruction info for target " << Triple.c_str() << "\n";
+ Out.flush();
+ return 0;
+ }
-#if HAVE_LLVM >= 0x0300
- unsigned int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
+#if HAVE_LLVM >= 0x0305
+ OwningPtr<const MCSubtargetInfo> STI(T->createMCSubtargetInfo(Triple, sys::getHostCPUName(), ""));
+ OwningPtr<MCContext> MCCtx(new MCContext(AsmInfo.get(), MRI.get(), 0));
+ OwningPtr<const MCDisassembler> DisAsm(T->createMCDisassembler(*STI, *MCCtx));
#else
- int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
+ OwningPtr<const MCSubtargetInfo> STI(T->createMCSubtargetInfo(Triple, sys::getHostCPUName(), ""));
+ OwningPtr<const MCDisassembler> DisAsm(T->createMCDisassembler(*STI));
#endif
+ if (!DisAsm) {
+ Out << "error: no disassembler for target " << Triple << "\n";
+ Out.flush();
+ return 0;
+ }
-#if HAVE_LLVM >= 0x0300
- OwningPtr<MCInstPrinter> Printer(
- T->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *STI));
-#elif HAVE_LLVM >= 0x0208
+
+#if HAVE_LLVM >= 0x0307
OwningPtr<MCInstPrinter> Printer(
- T->createMCInstPrinter(AsmPrinterVariant, *AsmInfo));
+ T->createMCInstPrinter(llvm::Triple(Triple), AsmPrinterVariant, *AsmInfo, *MII, *MRI));
#else
OwningPtr<MCInstPrinter> Printer(
- T->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, Out));
+ T->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *MII, *MRI, *STI));
#endif
if (!Printer) {
- debug_printf("error: no instruction printer for target %s\n", Triple.c_str());
- return;
+ Out << "error: no instruction printer for target " << Triple.c_str() << "\n";
+ Out.flush();
+ return 0;
}
-#if HAVE_LLVM >= 0x0301
TargetOptions options;
-#if defined(DEBUG)
+#if defined(DEBUG) && HAVE_LLVM < 0x0307
options.JITEmitDebugInfo = true;
#endif
#if defined(PIPE_ARCH_X86)
#if defined(DEBUG) || defined(PROFILE)
options.NoFramePointerElim = true;
#endif
- TargetMachine *TM = T->createTargetMachine(Triple, sys::getHostCPUName(), "", options);
-#elif HAVE_LLVM == 0x0300
- TargetMachine *TM = T->createTargetMachine(Triple, sys::getHostCPUName(), "");
-#else
- TargetMachine *TM = T->createTargetMachine(Triple, "");
-#endif
-
- const TargetInstrInfo *TII = TM->getInstrInfo();
+ OwningPtr<TargetMachine> TM(T->createTargetMachine(Triple, sys::getHostCPUName(), "", options));
/*
* Wrap the data in a MemoryObject
*/
+#if HAVE_LLVM >= 0x0306
+ ArrayRef<uint8_t> memoryObject((const uint8_t *)bytes, extent);
+#else
BufferMemoryObject memoryObject((const uint8_t *)bytes, extent);
+#endif
uint64_t pc;
pc = 0;
* so that between runs.
*/
- debug_printf("%6lu:\t", (unsigned long)pc);
+ Out << llvm::format("%6lu:\t", (unsigned long)pc);
if (!DisAsm->getInstruction(Inst, Size, memoryObject,
pc,
-#if HAVE_LLVM >= 0x0300
nulls(), nulls())) {
-#else
- nulls())) {
-#endif
- debug_printf("invalid\n");
+ Out << "invalid";
pc += 1;
}
if (0) {
unsigned i;
for (i = 0; i < Size; ++i) {
- debug_printf("%02x ", ((const uint8_t*)bytes)[pc + i]);
+ Out << llvm::format("%02x ", ((const uint8_t*)bytes)[pc + i]);
}
for (; i < 16; ++i) {
- debug_printf(" ");
+ Out << " ";
}
}
/*
* Print the instruction.
*/
-
-#if HAVE_LLVM >= 0x0300
- Printer->printInst(&Inst, Out, "");
-#elif HAVE_LLVM >= 0x208
- Printer->printInst(&Inst, Out);
+#if HAVE_LLVM >= 0x0307
+ Printer->printInst(&Inst, Out, "", *STI);
#else
- Printer->printInst(&Inst);
+ Printer->printInst(&Inst, Out, "");
#endif
- Out.flush();
/*
* Advance.
pc += Size;
-#if HAVE_LLVM >= 0x0300
- const MCInstrDesc &TID = TII->get(Inst.getOpcode());
-#else
- const TargetInstrDesc &TID = TII->get(Inst.getOpcode());
-#endif
+ const MCInstrDesc &TID = MII->get(Inst.getOpcode());
/*
* Keep track of forward jumps to a nearby address.
* Output the address relative to the function start, given
* that MC will print the addresses relative the current pc.
*/
- debug_printf("\t\t; %lu", (unsigned long)jump);
+ Out << "\t\t; " << jump;
/*
* Ignore far jumps given it could be actually a tail return to
}
}
- debug_printf("\n");
+ Out << "\n";
/*
* Stop disassembling on return statements, if there is no record of a
break;
}
}
+
+ if (pc >= extent) {
+ Out << "disassembly larger than " << extent << "bytes, aborting\n";
+ break;
+ }
}
+ Out << "\n";
+ Out.flush();
+
/*
* Print GDB command, useful to verify output.
*/
-
if (0) {
- debug_printf("disassemble %p %p\n", bytes, bytes + pc);
+ _debug_printf("disassemble %p %p\n", bytes, bytes + pc);
}
- debug_printf("\n");
-#else /* HAVE_LLVM < 0x0207 */
+ return pc;
+}
+
+
+extern "C" void
+lp_disassemble(LLVMValueRef func, const void *code) {
+ raw_debug_ostream Out;
+ Out << LLVMGetValueName(func) << ":\n";
+ disassemble(code, Out);
+}
+
+
+/*
+ * Linux perf profiler integration.
+ *
+ * See also:
+ * - http://penberg.blogspot.co.uk/2009/06/jato-has-profiler.html
+ * - https://github.com/penberg/jato/commit/73ad86847329d99d51b386f5aba692580d1f8fdc
+ * - http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=80d496be89ed7dede5abee5c057634e80a31c82d
+ */
+extern "C" void
+lp_profile(LLVMValueRef func, const void *code)
+{
+#if defined(__linux__) && (defined(DEBUG) || defined(PROFILE))
+ static boolean first_time = TRUE;
+ static FILE *perf_map_file = NULL;
+ static int perf_asm_fd = -1;
+ if (first_time) {
+ /*
+ * We rely on the disassembler for determining a function's size, but
+ * the disassembly is a leaky and slow operation, so avoid running
+ * this except when running inside linux perf, which can be inferred
+ * by the PERF_BUILDID_DIR environment variable.
+ */
+ if (getenv("PERF_BUILDID_DIR")) {
+ pid_t pid = getpid();
+ char filename[256];
+ util_snprintf(filename, sizeof filename, "/tmp/perf-%llu.map", (unsigned long long)pid);
+ perf_map_file = fopen(filename, "wt");
+ util_snprintf(filename, sizeof filename, "/tmp/perf-%llu.map.asm", (unsigned long long)pid);
+ mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
+ perf_asm_fd = open(filename, O_WRONLY | O_CREAT, mode);
+ }
+ first_time = FALSE;
+ }
+ if (perf_map_file) {
+ const char *symbol = LLVMGetValueName(func);
+ unsigned long addr = (uintptr_t)code;
+ llvm::raw_fd_ostream Out(perf_asm_fd, false);
+ Out << symbol << ":\n";
+ unsigned long size = disassemble(code, Out);
+ fprintf(perf_map_file, "%lx %lx %s\n", addr, size, symbol);
+ fflush(perf_map_file);
+ }
+#else
(void)func;
-#endif /* HAVE_LLVM < 0x0207 */
+ (void)code;
+#endif
}
+
projects / mesa.git / blobdiff