projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | #!/pkg/gnu/bin/perl -w |
| 2 | # | |
| 3 | # Copyright 2006 Sun Microsystems, Inc. All rights reserved. | |
| 4 | # Use is subject to license terms. | |
| 5 | # | |
| 6 | # ident "@(#)coverage.pl 1.1 06/03/30 SMI" | |
| 7 | # | |
| 8 | # Purpose of this script is to take the coverage output from legion | |
| 9 | # and map it to the dis-assembly of a binary (in this case, hypervisor) | |
| 10 | # so that we can map out which code paths in Hypervisor have been | |
| 11 | # executed. | |
| 12 | # | |
| 13 | # Input: | |
| 14 | # q.dis - output from dis-assembly of q binary | |
| 15 | # coverage.log - output from code coverage_dump tool in legion | |
| 16 | # | |
| 17 | # Processing: | |
| 18 | # - read the coverage data a build up an array of addresses and ref_cnts | |
| 19 | # - read the dis-assembly file and figure out the address offsets for | |
| 20 | # each instruction. | |
| 21 | # - foreach line in the dis-assembly, get the ref_cnt from the coverage | |
| 22 | # file and write out to new file. | |
| 23 | # | |
| 24 | # Output: | |
| 25 | # coverage.txt - A text file containing the dis output for the binary | |
| 26 | # under examination with a ref_cnt per line showing how | |
| 27 | # many times each instn was executed. | |
| 28 | # coverage.html- A html file version of the coverage.txt file with | |
| 29 | # un-executed code paths highlighted in red text. | |
| 30 | # | |
| 31 | ||
| 32 | use strict; | |
| 33 | use Switch; | |
| 34 | ||
| 35 | # input files | |
| 36 | my $disfile = "q.dis"; | |
| 37 | my $covfile="coverage.log"; | |
| 38 | ||
| 39 | # output files | |
| 40 | my $outfile_txt="coverage.txt"; | |
| 41 | my $outfile_html="coverage.html"; | |
| 42 | ||
| 43 | # to be parse from command line | |
| 44 | my $hypervisor=""; | |
| 45 | ||
| 46 | # init all variables | |
| 47 | my $cov_idx = 0; | |
| 48 | my $cov_addr = 0; | |
| 49 | my $cov_cnt = 0; | |
| 50 | my $cov_instn = 0; | |
| 51 | my $dis_sym = 0; | |
| 52 | my $dis_instn = 0; | |
| 53 | my $num_addrs_executed = 0; | |
| 54 | my $font_head = 0; | |
| 55 | my $font_tail = 0; | |
| 56 | my %cov_cnt; | |
| 57 | my %cov_instn; | |
| 58 | my $hv_base_addr_str = ""; | |
| 59 | my $ignore0 = 0; | |
| 60 | my $ignore1 = 0; | |
| 61 | my $percentage = 0; | |
| 62 | my $summary = 0; | |
| 63 | my $ref_cnt = 0; | |
| 64 | my $ref_str = ''; | |
| 65 | my $col_idx = 0; | |
| 66 | my $col_ref_str = ""; | |
| 67 | my $col_sym = ""; | |
| 68 | my $col_instn = ""; | |
| 69 | ||
| 70 | sub main | |
| 71 | { | |
| 72 | # | |
| 73 | # Figure out from args whether this is an N1, N2 or Rock Hypervisor | |
| 74 | # we are analysing. The output from dis needs to have it's addresses | |
| 75 | # aligned to the location in memory where Hypervisor runs from. | |
| 76 | # | |
| 77 | $hypervisor = "$ARGV[0]"; | |
| 78 | switch ($hypervisor) { | |
| 79 | case "n1" { print "Analysing Niagara1 hypervisor\n" } | |
| 80 | case "n2" { print "Analysing Niagara2 hypervisor\n" } | |
| 81 | case "rock" { print "Analysing Rock hypervisor\n" } | |
| 82 | case "" { die "Usage: coverage.pl [processor]\nValid processors, [n1|n2|rock]\n" } | |
| 83 | else { die "Fatal: Unknown processor $hypervisor\n" } | |
| 84 | } | |
| 85 | ||
| 86 | # | |
| 87 | # Load dis and coverage files | |
| 88 | # | |
| 89 | open(dis_f, $disfile) | |
| 90 | || die "Cannot open $disfile: $!\n"; | |
| 91 | ||
| 92 | open(cov_f, $covfile) | |
| 93 | || die "Cannot open $covfile: $!\n"; | |
| 94 | ||
| 95 | # | |
| 96 | # open output files | |
| 97 | # | |
| 98 | open(outf_txt, ">$outfile_txt") | |
| 99 | || die "Cannot open $$outfile_txt: $!\n"; | |
| 100 | ||
| 101 | open(outf_html, ">$outfile_html") | |
| 102 | || die "Cannot open $$outfile_html: $!\n"; | |
| 103 | ||
| 104 | # Print header of html and text files | |
| 105 | print_header(); | |
| 106 | ||
| 107 | # | |
| 108 | # build up an array of the coverage log file output so that | |
| 109 | # we can search it using the address as an index later | |
| 110 | # | |
| 111 | while (<cov_f>) { | |
| 112 | ($cov_idx,$cov_addr,$cov_cnt,$cov_instn) = split(/:/); | |
| 113 | $cov_cnt{$cov_addr} = hex($cov_cnt); | |
| 114 | $cov_instn{$cov_addr} = $cov_instn; | |
| 115 | } | |
| 116 | ||
| 117 | # Accounting for coverage data | |
| 118 | my $num_addrs = 0; # total number of PC samples | |
| 119 | my $num_addrs_excuted = 0; # only incr when ref_cnt > 0 | |
| 120 | ||
| 121 | my $hv_base_addr = get_hv_base_addr(); | |
| 122 | printf ("Hypervisor base address is 0x%llx\n", $hv_base_addr); | |
| 123 | my $hv_addr_offset = 0x0; | |
| 124 | ||
| 125 | # | |
| 126 | # For each line of the dis output, check the coverage array | |
| 127 | # for a ref_cnt. Then output the data into a new file using | |
| 128 | # the text output and the html output. | |
| 129 | # | |
| 130 | while (<dis_f>) { | |
| 131 | ||
| 132 | chomp; | |
| 133 | next if (!/\s*([^:]+):\s*(.*)$/); | |
| 134 | ||
| 135 | $dis_sym = $1; | |
| 136 | $dis_instn = $2; | |
| 137 | ||
| 138 | # Calculate the %pc address for this instruction | |
| 139 | my $dis_addr += ($hv_base_addr + $hv_addr_offset); | |
| 140 | $hv_addr_offset += 0x4; | |
| 141 | ||
| 142 | # | |
| 143 | # Map dis-assembly address to a legion address (offset in memory where HV | |
| 144 | # runs from) so that it can match the coverage data. | |
| 145 | # | |
| 146 | switch ($hypervisor) { | |
| 147 | case "n1" { no warnings; $dis_addr = (($dis_addr - hex('fff0000000')) + hex('400000')); } | |
| 148 | case "n2" { no warnings; $dis_addr = (($dis_addr - hex('fff0000000')) + hex('100000')); } | |
| 149 | case "rock" { $dis_addr += (hex('100000')); } | |
| 150 | else { die "Fatal: need to figure out addr conversion for $hypervisor" } | |
| 151 | } | |
| 152 | ||
| 153 | # | |
| 154 | # convert the address to a string with "0x" and the hex number | |
| 155 | # so that we can use it as an index into the coverage data array | |
| 156 | # | |
| 157 | my $index_addr = sprintf("0x%llx", $dis_addr); | |
| 158 | ||
| 159 | $ref_cnt = 0x0; | |
| 160 | $ref_cnt = $cov_cnt{$index_addr} if $cov_cnt{$index_addr}; | |
| 161 | ||
| 162 | if ($ref_cnt == 0) { | |
| 163 | # %pc not executed | |
| 164 | $ref_str = 'NIL'; | |
| 165 | } else { | |
| 166 | # %pc executed | |
| 167 | $ref_str = sprintf("%d", $ref_cnt); | |
| 168 | $num_addrs_executed += 1; | |
| 169 | } | |
| 170 | ||
| 171 | # | |
| 172 | # Count number of %pc samples | |
| 173 | # Ignore illtrap %pcs for coverage purposes | |
| 174 | # | |
| 175 | if (($dis_instn =~ /illtrap/) && (!$ref_cnt)) { | |
| 176 | # Don't count or print illtrap %pcs that have no ref_cnt | |
| 177 | } else { | |
| 178 | # count number of %pcs whether they are executed or not | |
| 179 | $num_addrs += 1; | |
| 180 | print_row($index_addr, $ref_str, $dis_sym, $dis_instn); | |
| 181 | } | |
| 182 | } | |
| 183 | ||
| 184 | # | |
| 185 | # Calculate coverage accounting totals | |
| 186 | # | |
| 187 | $percentage = (($num_addrs_executed / ($num_addrs)) * 100); | |
| 188 | $summary = sprintf ("Summary: Number of valid %%pc values in binary is %llu, coverage is [%.2f%%]\n", | |
| 189 | $num_addrs, $percentage); | |
| 190 | printf outf_txt ("%s", $summary); | |
| 191 | printf outf_html ("<br>%s<br>\n", $summary); | |
| 192 | printf ("%s", $summary); | |
| 193 | ||
| 194 | print_footer(); | |
| 195 | ||
| 196 | } #end main | |
| 197 | ||
| 198 | ||
| 199 | ||
| 200 | sub print_header | |
| 201 | { | |
| 202 | print outf_txt "Addr, Ref_Cnt, Label, Instruction (raw, decoded)\n"; | |
| 203 | ||
| 204 | print outf_html << "EOF"; | |
| 205 | <html> | |
| 206 | <head> | |
| 207 | <title>Hypervisor Coverage data for $hypervisor</title> | |
| 208 | </head> | |
| 209 | <body> | |
| 210 | <table WIDTH="100%" NOSAVE > | |
| 211 | EOF | |
| 212 | } # end print_header | |
| 213 | ||
| 214 | sub print_footer | |
| 215 | { | |
| 216 | print outf_html << "EOF"; | |
| 217 | </table> | |
| 218 | </verbatim> | |
| 219 | </body> | |
| 220 | </html> | |
| 221 | EOF | |
| 222 | ||
| 223 | } # end print_footer | |
| 224 | ||
| 225 | ||
| 226 | # | |
| 227 | # print a row of the table using args passed in | |
| 228 | # | |
| 229 | sub print_row | |
| 230 | { | |
| 231 | $col_idx = $_[0]; | |
| 232 | $col_ref_str = $_[1]; | |
| 233 | $col_sym = $_[2]; | |
| 234 | $col_instn = $_[3]; | |
| 235 | ||
| 236 | # chomp($col_instn); | |
| 237 | ||
| 238 | $font_head=""; | |
| 239 | $font_tail=""; | |
| 240 | ||
| 241 | if ($col_ref_str eq 'NIL') { | |
| 242 | # Mark all NIL lines in red font | |
| 243 | $font_head= "<font color=red>"; | |
| 244 | $font_tail= "</font>"; | |
| 245 | print outf_txt " "; | |
| 246 | ||
| 247 | } elsif ($col_ref_str eq 'N/A') { | |
| 248 | # Print this for each line whose ref_cnt is N/A | |
| 249 | print outf_txt " "; | |
| 250 | } else { | |
| 251 | # Print this for each line whose ref_cnt is non-zero | |
| 252 | print outf_txt "-->"; | |
| 253 | } | |
| 254 | ||
| 255 | # | |
| 256 | # output to html file | |
| 257 | # | |
| 258 | print outf_html "<tr>\n"; | |
| 259 | print outf_html "\t<td>$font_head $col_idx $font_tail</td>\n"; | |
| 260 | print outf_html "\t<td>$font_head $col_ref_str $font_tail</td>\n"; | |
| 261 | print outf_html "\t<td>$font_head $col_sym $font_tail</td>\n"; | |
| 262 | print outf_html "\t<td>$font_head $col_instn $font_tail</td>\n"; | |
| 263 | print outf_html "</tr>"; | |
| 264 | print outf_html "\n"; | |
| 265 | ||
| 266 | # | |
| 267 | # output to text file | |
| 268 | # | |
| 269 | print outf_txt "$col_idx, $col_ref_str, $col_sym, $col_instn\n"; | |
| 270 | ||
| 271 | } # end print_row | |
| 272 | ||
| 273 | # | |
| 274 | # Get the base address of the hypervisor using /usr/ccs/bin/nm | |
| 275 | # to lookup the address of the _START_ symbol | |
| 276 | # | |
| 277 | sub get_hv_base_addr | |
| 278 | { | |
| 279 | my $returncode = `/usr/ccs/bin/nm -xp q | grep _START_`; | |
| 280 | ($hv_base_addr_str,$ignore0,$ignore1) = split(/ /, $returncode); | |
| 281 | no warnings; | |
| 282 | return hex($hv_base_addr_str); | |
| 283 | ||
| 284 | } # end get_hv_base_addr | |
| 285 | ||
| 286 | ||
| 287 | main(); |