Adding upstream version 1.3.3.upstream/1.3.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 149 insertions, 0 deletions

diff --git a/decoder/source/trc_ret_stack.cpp b/decoder/source/trc_ret_stack.cpp
new file mode 100644
index 0000000..a56c6e6
--- /dev/null
+++ b/decoder/source/trc_ret_stack.cpp
@@ -0,0 +1,149 @@
+/*
+* \file       trc_ret_stack.cpp
+* \brief      OpenCSD : trace decoder return stack feature.
+*
+* \copyright  Copyright (c) 2017, ARM Limited. All Rights Reserved.
+*/
+
+/*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright notice,
+* this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright notice,
+* this list of conditions and the following disclaimer in the documentation
+* and/or other materials provided with the distribution.
+*
+* 3. Neither the name of the copyright holder nor the names of its contributors
+* may be used to endorse or promote products derived from this software without
+* specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' AND
+* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include "common/trc_ret_stack.h"
+
+#ifdef TRC_RET_STACK_DEBUG
+#include <sstream>
+#include <iostream>
+#include "common/trc_component.h"
+
+#define LOG_POP(A,O,I) LogOp("Pop",A,O,I)
+#define LOG_PUSH(A,O,I) LogOp("Push",A,O,I)
+#define LOG_FLUSH() LogOp("Flush",0,-1000,(const ocsd_isa)0)
+
+// uncomment for forced std::cout log, bypassing normal library debug logger.
+// useful perhaps when perf is decoding w/o printing.
+// #define FORCE_STD_COUT
+
+#else
+#define LOG_POP(A,O,I) 
+#define LOG_PUSH(A,O,I)
+#define LOG_FLUSH()
+#endif
+
+TrcAddrReturnStack::TrcAddrReturnStack() :
+    m_active(false),
+    m_pop_pending(false),
+    head_idx(0),
+    num_entries(0)
+{
+#ifdef TRC_RET_STACK_DEBUG
+    m_p_debug_logger = 0;
+#endif
+}
+
+void TrcAddrReturnStack::push(const ocsd_vaddr_t addr, const ocsd_isa isa)
+{
+    if (is_active())
+    {
+        head_idx++;
+        head_idx &= 0xF;
+        m_stack[head_idx].ret_addr = addr;
+        m_stack[head_idx].ret_isa = isa;
+        num_entries++;
+        if (num_entries > 16)
+            num_entries = 16;
+        LOG_PUSH(addr,0,isa);
+        m_pop_pending = false; 
+    }
+}
+
+ocsd_vaddr_t TrcAddrReturnStack::pop(ocsd_isa &isa)
+{
+    ocsd_vaddr_t addr = (ocsd_vaddr_t)-1;
+    if (is_active())
+    {
+        if (num_entries > 0)
+        {
+            addr = m_stack[head_idx].ret_addr;
+            isa = m_stack[head_idx].ret_isa;
+            head_idx--;
+            head_idx &= 0xF;
+        }
+        num_entries--;
+        LOG_POP(addr,1,isa);
+        m_pop_pending = false;
+    }
+    return addr;
+}
+
+
+void  TrcAddrReturnStack::flush()
+{
+    num_entries = 0;
+    m_pop_pending = false;
+    LOG_FLUSH();
+}
+
+#ifdef TRC_RET_STACK_DEBUG
+void TrcAddrReturnStack::LogOp(const char * pszOpString, ocsd_vaddr_t addr, int head_off, ocsd_isa isa)
+{
+    static const char *isa_names[] =
+    { 
+        "A32",      /**< V7 ARM 32, V8 AArch32 */
+        "T32",      /**< Thumb2 -> 16/32 bit instructions */
+        "A64",      /**< V8 AArch64 */
+        "TEE",      /**< Thumb EE - unsupported */
+        "JZL",      /**< Jazelle - unsupported in trace */
+        "custom",       /**< Instruction set - custom arch decoder */
+        "unknown"       /**< ISA not yet known */
+    };
+
+    if (m_p_debug_logger)
+    {
+        std::ostringstream oss;
+        if(head_off == -1000)
+        {
+            oss << "Return stack " << pszOpString << "\n";
+        }
+        else
+        {
+            int name_idx = (int)isa;
+            if (name_idx > 6)
+                name_idx = 6;
+            oss << "Return stack " << pszOpString << "[" << std::dec << (head_idx+head_off) << "](0x" << std::hex << addr << "), " << isa_names[name_idx] << ";";
+            oss << "current entries = " << std::dec << num_entries << ";";
+            oss << "new head idx = " << head_idx << ";";
+            oss << "pop pend (pre op) = " << (m_pop_pending ? "true\n" : "false\n");
+        }
+#ifdef FORCE_STD_COUT        
+        std::cout << oss.str();
+        std::cout.flush();
+#endif       
+        m_p_debug_logger->LogDefMessage(oss.str());
+    }
+}
+#endif
+
+/* End of File trc_ret_stack.cpp */