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.gdbinit (print_lineno): support a succinct bitvector implementation [ci skip]

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62342 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ktsj 2018-02-10 06:02:37 +00:00
parent 5b794fee39
commit 61f26a1bf9
1 changed files with 40 additions and 10 deletions
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50
.gdbinit
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@ -1021,25 +1021,55 @@ define print_lineno
set $pos = $pos - 1
end
set $i = 0
set $index = 0
set $size = $iseq->body->insns_info.size
set $table = $iseq->body->insns_info.body
set $positions = $iseq->body->insns_info.positions
#printf "size: %d\n", $size
if $size == 0
else
set $i = 1
while $i < $size
#printf "table[%d]: position: %d, line: %d, pos: %d\n", $i, $positions[$i], $table[$i].line_no, $pos
if $positions[$i] > $pos
loop_break
if $size == 1
printf "%d", $table[0].line_no
else
if $positions
# get_insn_info_linear_search
set $index = 1
while $index < $size
#printf "table[%d]: position: %d, line: %d, pos: %d\n", $i, $positions[$i], $table[$i].line_no, $pos
if $positions[$index] > $pos
loop_break
end
set $index = $index + 1
if $positions[$index] == $pos
loop_break
end
end
set $i = $i + 1
if $positions[$i] == $pos
loop_break
else
# get_insn_info_succinct_bitvector
set $sd = $iseq->body->insns_info.succ_index_table
set $immediate_table_size = sizeof($sd->imm_part) / sizeof(uint64_t) * 9
if $pos < $immediate_table_size
set $i = $pos / 9
set $j = $pos % 9
set $index = ((int)($sd->imm_part[$i] >> ($j * 7))) & 0x7f
else
set $block_index = ($pos - $immediate_table_size) / 512
set $block = &$sd->succ_part[$block_index]
set $block_bit_index = ($pos - $immediate_table_size) % 512
set $small_block_index = $block_bit_index / 64
set $small_block_popcount = $small_block_index == 0 ? 0 : (((int)($block->small_block_ranks >> (($small_block_index - 1) * 9))) & 0x1ff)
set $x = $block->bits[$small_block_index] << (63 - $block_bit_index % 64)
set $x = ($x & 0x5555555555555555) + ($x >> 1 & 0x5555555555555555)
set $x = ($x & 0x3333333333333333) + ($x >> 2 & 0x3333333333333333)
set $x = ($x & 0x0707070707070707) + ($x >> 4 & 0x0707070707070707)
set $x = ($x & 0x001f001f001f001f) + ($x >> 8 & 0x001f001f001f001f)
set $x = ($x & 0x0000003f0000003f) + ($x >>16 & 0x0000003f0000003f)
set $popcnt = ($x & 0x7f) + ($x >>32 & 0x7f)
set $index = $block->rank + $small_block_popcount + $popcnt
end
end
printf "%d", $table[$i-1].line_no
printf "%d", $table[$index-1].line_no
end
end
end