diff options
Diffstat (limited to 'src/ssx/trace/ssx_trace_binary.c')
| -rw-r--r-- | src/ssx/trace/ssx_trace_binary.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/ssx/trace/ssx_trace_binary.c b/src/ssx/trace/ssx_trace_binary.c new file mode 100644 index 0000000..f1d1db6 --- /dev/null +++ b/src/ssx/trace/ssx_trace_binary.c @@ -0,0 +1,115 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/ssx/trace/ssx_trace_binary.c $ */ +/* */ +/* OpenPOWER OnChipController Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2015 */ +/* [+] International Business Machines Corp. */ +/* */ +/* */ +/* Licensed under the Apache License, Version 2.0 (the "License"); */ +/* you may not use this file except in compliance with the License. */ +/* You may obtain a copy of the License at */ +/* */ +/* http://www.apache.org/licenses/LICENSE-2.0 */ +/* */ +/* Unless required by applicable law or agreed to in writing, software */ +/* distributed under the License is distributed on an "AS IS" BASIS, */ +/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */ +/* implied. See the License for the specific language governing */ +/* permissions and limitations under the License. */ +/* */ +/* IBM_PROLOG_END_TAG */ +//----------------------------------------------------------------------------- +// *! (C) Copyright International Business Machines Corp. 2014 +// *! All Rights Reserved -- Property of IBM +// *! *** IBM Confidential *** +//----------------------------------------------------------------------------- + +/// \file ssx_trace_binary.c +/// \brief SSX Trace function for dumping memory contents +/// +/// The ssx_trace_binary function is called by the SSX_TRACE_BINARY() macro. +/// + + +#include "ssx.h" +#include "ssx_trace.h" + +#if (SSX_TRACE_SUPPORT && SSX_TIMER_SUPPORT) +void ssx_trace_binary(uint32_t i_hash_and_size, void* bufp) +{ + SsxTraceBinary footer; + SsxTraceBinary* footer_ptr; + SsxTraceState state; + uint64_t* ptr64; + uint64_t tb64; + SsxMachineContext ctx; + uint32_t data_size; + uint32_t cb_offset; + uint32_t footer_offset; + uint8_t* dest; + uint8_t* src; + uint32_t index; + + //fill in the footer data + tb64 = ssx_ext_timebase_get(); + footer.parms.word32 = i_hash_and_size; //this has the size and hash + state.tbu32 = tb64 >> 32; + footer.time_format.word32 = tb64 & 0x00000000ffffffffull; + footer.time_format.format = SSX_TRACE_FORMAT_BINARY; + + //round up to 8 byte boundary + data_size = (footer.parms.num_bytes + 7) & ~0x00000007ul; + + //limit data size + if(data_size > SSX_TRACE_CLIPPED_BINARY_SZ) + { + data_size = SSX_TRACE_CLIPPED_BINARY_SZ; + } + + //*****The following operations must be done atomically***** + ssx_critical_section_enter(SSX_NONCRITICAL, &ctx); + + //load in the offset in the cb for the entry we are adding + cb_offset = g_ssx_trace_buf.state.offset; + + //Find the offset for the footer (at the end of the entry) + footer_offset = cb_offset + data_size; + + //calculate the address of the footer + ptr64 = (uint64_t*)&g_ssx_trace_buf.cb[footer_offset & SSX_TRACE_CB_MASK]; + + //calculate the offset for the next entry in the cb + state.offset = footer_offset + sizeof(SsxTraceBinary); + + //update the cb state (tbu and offset) + g_ssx_trace_buf.state.word64 = state.word64; + + //write the footer data to the circular buffer including the + //timesamp, string hash and data size + *ptr64 = footer.word64; + + //*******************exit the critical section*************** + ssx_critical_section_exit(&ctx); + + //write data to the circular buffer + for(src = bufp, index = 0; + index < data_size; + index++) + { + dest = &g_ssx_trace_buf.cb[(cb_offset + index) & SSX_TRACE_CB_MASK]; + *dest = *(src++); + } + + //Mark the trace entry update as being completed + footer_ptr = (SsxTraceBinary*)ptr64; + footer_ptr->parms.complete = 1; + +} + +#endif + + |
