diff options
author | RajithaY <rajithax.yerrumsetty@intel.com> | 2017-04-25 03:31:15 -0700 |
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committer | Rajitha Yerrumchetty <rajithax.yerrumsetty@intel.com> | 2017-05-22 06:48:08 +0000 |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/ipxe/src/core/fnrec.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/core/fnrec.c')
-rw-r--r-- | qemu/roms/ipxe/src/core/fnrec.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/qemu/roms/ipxe/src/core/fnrec.c b/qemu/roms/ipxe/src/core/fnrec.c deleted file mode 100644 index 0430817f8..000000000 --- a/qemu/roms/ipxe/src/core/fnrec.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * Copyright (C) 2010 Stefan Hajnoczi <stefanha@gmail.com>. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <ipxe/init.h> -#include <ipxe/uaccess.h> -#include <ipxe/io.h> - -/** @file - * - * Function trace recorder for crash and hang debugging - * - */ - -/** Constant for identifying valid trace buffers */ -#define FNREC_MAGIC ( 'f' << 24 | 'n' << 16 | 'r' << 8 | 'e' ) - -/** Number of trace buffer entries */ -#define FNREC_NUM_ENTRIES 4096 - -/** Trace buffer physical address - * - * Fixed at 17MB - */ -#define FNREC_PHYS_ADDRESS ( 17 * 1024 * 1024 ) - -/** A trace buffer entry */ -struct fnrec_entry { - /** Called function address */ - void *called_fn; - /** Call site */ - void *call_site; - /** Entry count */ - uint16_t entry_count; - /** Exit count */ - uint16_t exit_count; - /** Checksum */ - unsigned long checksum; -}; - -/** A trace buffer */ -struct fnrec_buffer { - /** Constant for identifying valid trace buffers */ - uint32_t magic; - - /** Next trace buffer entry to fill */ - unsigned int idx; - - /** Trace buffer */ - struct fnrec_entry data[FNREC_NUM_ENTRIES] - __attribute__ (( aligned ( 64 ) )); -}; - -/** The trace buffer */ -static struct fnrec_buffer *fnrec_buffer; - -/** - * Test whether the trace buffer is valid - * - * @ret is_valid Buffer is valid - */ -static int fnrec_is_valid ( void ) { - return ( fnrec_buffer && ( fnrec_buffer->magic == FNREC_MAGIC ) ); -} - -/** - * Invalidate the trace buffer - * - */ -static void fnrec_invalidate ( void ) { - fnrec_buffer->magic = 0; -} - -/** - * Reset the trace buffer and clear entries - */ -static void fnrec_reset ( void ) { - memset ( fnrec_buffer, 0, sizeof ( *fnrec_buffer ) ); - fnrec_buffer->magic = FNREC_MAGIC; -} - -/** - * Append an entry to the trace buffer - * - * @v called_fn Called function - * @v call_site Call site - * @ret entry Trace buffer entry - */ -static struct fnrec_entry * fnrec_append ( void *called_fn, void *call_site ) { - struct fnrec_entry *entry; - - /* Re-use existing entry, if possible */ - entry = &fnrec_buffer->data[ fnrec_buffer->idx ]; - if ( ( entry->called_fn == called_fn ) && - ( entry->call_site == call_site ) && - ( entry->entry_count >= entry->exit_count ) ) { - return entry; - } - - /* Otherwise, create a new entry */ - fnrec_buffer->idx = ( ( fnrec_buffer->idx + 1 ) % FNREC_NUM_ENTRIES ); - entry = &fnrec_buffer->data[ fnrec_buffer->idx ]; - entry->called_fn = called_fn; - entry->call_site = call_site; - entry->entry_count = 0; - entry->exit_count = 0; - entry->checksum = ( ( ( unsigned long ) called_fn ) ^ - ( ( unsigned long ) call_site ) ); - return entry; -} - -/** - * Print the contents of the trace buffer in chronological order - */ -static void fnrec_dump ( void ) { - struct fnrec_entry *entry; - unsigned int i; - unsigned int idx; - unsigned long checksum; - - printf ( "fnrec buffer dump:\n" ); - for ( i = 1 ; i <= FNREC_NUM_ENTRIES ; i++ ) { - idx = ( ( fnrec_buffer->idx + i ) % FNREC_NUM_ENTRIES ); - entry = &fnrec_buffer->data[idx]; - if ( ( entry->entry_count == 0 ) && ( entry->exit_count == 0 ) ) - continue; - checksum = ( ( ( ( unsigned long ) entry->called_fn ) ^ - ( ( unsigned long ) entry->call_site ) ) + - entry->entry_count + entry->exit_count ); - printf ( "%p %p %d %d", entry->called_fn, entry->call_site, - entry->entry_count, entry->exit_count ); - if ( entry->checksum != checksum ) { - printf ( " (checksum wrong at phys %08lx)", - virt_to_phys ( entry ) ); - } - printf ( "\n"); - } -} - -/** - * Function tracer initialisation function - */ -static void fnrec_init ( void ) { - - fnrec_buffer = phys_to_virt ( FNREC_PHYS_ADDRESS ); - if ( fnrec_is_valid() ) { - fnrec_invalidate(); - fnrec_dump(); - } else { - printf ( "fnrec buffer not found\n" ); - } - fnrec_reset(); -} - -struct init_fn fnrec_init_fn __init_fn ( INIT_NORMAL ) = { - .initialise = fnrec_init, -}; - -/* - * These functions are called from every C function. The compiler inserts - * these calls when -finstrument-functions is used. - */ -void __cyg_profile_func_enter ( void *called_fn, void *call_site ) { - struct fnrec_entry *entry; - - if ( fnrec_is_valid() ) { - entry = fnrec_append ( called_fn, call_site ); - entry->entry_count++; - entry->checksum++; - mb(); - } -} - -void __cyg_profile_func_exit ( void *called_fn, void *call_site ) { - struct fnrec_entry *entry; - - if ( fnrec_is_valid() ) { - entry = fnrec_append ( called_fn, call_site ); - entry->exit_count++; - entry->checksum++; - mb(); - } -} |