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//-----------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2014
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//-----------------------------------------------------------------------------
/// \file pk_trace_binary.c
/// \brief PK Trace function for dumping memory contents
///
/// The pk_trace_binary function is called by the PK_TRACE_BINARY() macro.
///
#include "pk.h"
#include "pk_trace.h"
#if (PK_TRACE_SUPPORT && PK_TIMER_SUPPORT)
void pk_trace_binary(uint32_t i_hash_and_size, void* bufp)
{
PkTraceBinary footer;
PkTraceBinary* footer_ptr;
PkTraceState state;
uint64_t* ptr64;
uint64_t tb64;
PkMachineContext 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 = pk_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 = PK_TRACE_FORMAT_BINARY;
//round up to 8 byte boundary
data_size = (footer.parms.num_bytes + 7) & ~0x00000007ul;
//limit data size
if(data_size > PK_TRACE_CLIPPED_BINARY_SZ)
{
data_size = PK_TRACE_CLIPPED_BINARY_SZ;
}
//*****The following operations must be done atomically*****
pk_critical_section_enter(&ctx);
//load in the offset in the cb for the entry we are adding
cb_offset = g_pk_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_pk_trace_buf.cb[footer_offset & PK_TRACE_CB_MASK];
//calculate the offset for the next entry in the cb
state.offset = footer_offset + sizeof(PkTraceBinary);
//update the cb state (tbu and offset)
g_pk_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***************
pk_critical_section_exit(&ctx);
//write data to the circular buffer
for(src = bufp, index = 0;
index < data_size;
index++)
{
dest = &g_pk_trace_buf.cb[(cb_offset + index) & PK_TRACE_CB_MASK];
*dest = *(src++);
}
//Mark the trace entry update as being completed
footer_ptr = (PkTraceBinary*)ptr64;
footer_ptr->parms.complete = 1;
}
#endif
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