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October 18, 2023 21:00
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GDB helper commands for debugging lambda-compiler generated binaries
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define iimpls | |
set var $g_pair_impl = (void*)_L3Nstd4NpairL3I0 | |
set var $g_nil_impl = (void*)_L3Nstd5NfalseL1I0 | |
# set var $g_succ_impl = (void*)_L3Nstd4NsuccL2I0 | |
set var $g_succ_impl = (void*)_L3Nstd2NorL2I1 | |
set var $g_zero_impl = (void*)_L3Nstd5NfalseL1I0 | |
end | |
set var $g_have_impls = 0 | |
define itimpls | |
if $g_have_impls == 0 | |
iimpls | |
set var $g_have_impls = 1 | |
end | |
end | |
define ilambda | |
set var $lambda = (void**)$arg0 | |
set var $refcount = (unsigned long long)($lambda[0]) | |
set var $captures = (unsigned long long)($lambda[1]) | |
set var $userdata = (unsigned long long)($lambda[2]) | |
set var $impl = $lambda[3] | |
printf "lambda at %p: refcount = %lld, captures = %lld, userdata = %lld, impl: ", $lambda, $refcount, $captures, $userdata | |
x/1bx $impl | |
end | |
define plambda | |
ilambda $arg0 | |
set var $cur_lambda = $lambda | |
set var $cur_captures = $captures | |
set var $cur_userdata = $userdata | |
set var $cur_cap = &$cur_lambda[4] | |
set var $i = 0 | |
while $i < $cur_captures | |
if ($i == $cur_captures - 1) && ($cur_userdata == 0) | |
printf "└─ " | |
else | |
printf "├─ " | |
end | |
printf "$%lld: ", $i + 1 | |
ilambda *$cur_cap | |
set var $cur_cap = $cur_cap + 1 | |
set var $i = $i + 1 | |
end | |
if $cur_userdata > 0 | |
printf "└─ userdata: " | |
eval "x/%lldbx %p", $cur_userdata, $cur_cap | |
end | |
end | |
define pcont | |
set var $i = 0 | |
set var $cont = (void**)$arg0 | |
printf "continuation backtrace at %p:\n", $cont | |
while $cont | |
set var $lambda = (void**)($cont[1]) | |
set var $cont = (void**)($cont[0]) | |
if $cont | |
printf "├─ " | |
else | |
printf "└─ " | |
end | |
printf "%d: ", $i | |
ilambda $lambda | |
set var $i = $i + 1 | |
end | |
end | |
define pnat | |
if $argc < 2 | |
itimpls | |
set var $succ_impl = $g_succ_impl | |
else | |
set var $succ_impl = $arg1 | |
end | |
if $argc < 3 | |
itimpls | |
set var $zero_impl = $g_zero_impl | |
else | |
set var $zero_impl = $arg2 | |
end | |
set var $lambda = (void**)$arg0 | |
set var $orig_lambda = $lambda | |
set var $i = 0 | |
while $lambda | |
set var $captures = (unsigned long long)($lambda[1]) | |
if $captures == 0 | |
set var $cur_impl = $lambda[3] | |
if $cur_impl != $zero_impl | |
printf "error: cannot be a nat: lambda at %p has invalid impl for zero\n", $lambda | |
set var $lambda = 0 | |
else | |
printf "value of nat at %p: %lld\n", $orig_lambda, $i | |
set var $lambda = 0 | |
end | |
end | |
if $captures == 1 | |
set var $cur_impl = $lambda[3] | |
if $cur_impl != $succ_impl | |
printf "error: cannot be a nat: lambda at %p has invalid impl for succ\n", $lambda | |
set var $lambda = 0 | |
else | |
set var $i = $i + 1 | |
set $lambda = (void**)($lambda[4]) | |
end | |
end | |
if $captures > 1 | |
printf "error: cannot be a nat: lambda at %p has invalid captures for nat\n", $lambda | |
set var $lambda = 0 | |
end | |
end | |
end | |
define plist | |
if $argc < 2 | |
itimpls | |
set var $pair_impl = $g_pair_impl | |
else | |
set var $pair_impl = $arg1 | |
end | |
if $argc < 3 | |
itimpls | |
set var $nil_impl = $g_nil_impl | |
else | |
set var $nil_impl = $arg2 | |
end | |
set var $lambda = (void**)$arg0 | |
printf "list at %p:\n", $lambda | |
set var $orig_lambda = $lambda | |
while $lambda | |
set var $cur_captures = (unsigned long long)($lambda[1]) | |
if $cur_captures == 0 | |
set var $cur_impl = $lambda[3] | |
if $cur_impl != $nil_impl | |
printf "error: cannot be a list: lambda at %p has invalid impl for nil\n", $lambda | |
set var $lambda = 0 | |
else | |
printf "└─ nil at %p\n", $lambda | |
set var $lambda = 0 | |
end | |
end | |
if $cur_captures == 2 | |
set var $cur_impl = $lambda[3] | |
if $cur_impl != $pair_impl | |
printf "error: cannot be a list: lambda at %p has invalid impl for pair\n", $lambda | |
set var $lambda = 0 | |
else | |
set var $next_lambda = (void**)($lambda[4]) | |
set var $val = (void**)($lambda[5]) | |
printf "├─ " | |
ilambda $val | |
set var $lambda = $next_lambda | |
end | |
end | |
if $cur_captures == 1 || $cur_captures > 2 | |
printf "error: cannot be a list: lambda at %p has invalid captures for list\n", $lambda | |
set var $lambda = 0 | |
end | |
end | |
end | |
define pnatlist | |
if $argc < 2 | |
itimpls | |
set var $pair_impl = $g_pair_impl | |
else | |
set var $pair_impl = $arg1 | |
end | |
if $argc < 3 | |
itimpls | |
set var $nil_impl = $g_nil_impl | |
else | |
set var $nil_impl = $arg2 | |
end | |
if $argc < 4 | |
itimpls | |
set var $succ_impl = $g_succ_impl | |
else | |
set var $succ_impl = $arg1 | |
end | |
if $argc < 5 | |
itimpls | |
set var $zero_impl = $g_zero_impl | |
else | |
set var $zero_impl = $arg2 | |
end | |
set var $lambda = (void**)$arg0 | |
printf "nat list at %p:\n", $lambda | |
set var $orig_lambda = $lambda | |
while $lambda | |
set var $cur_captures = (unsigned long long)($lambda[1]) | |
if $cur_captures == 0 | |
set var $cur_impl = $lambda[3] | |
if $cur_impl != $nil_impl | |
printf "error: cannot be a list: lambda at %p has invalid impl for nil\n", $lambda | |
set var $lambda = 0 | |
else | |
printf "└─ nil at %p\n", $lambda | |
set var $lambda = 0 | |
end | |
end | |
if $cur_captures == 2 | |
set var $cur_impl = $lambda[3] | |
if $cur_impl != $pair_impl | |
printf "error: cannot be a list: lambda at %p has invalid impl for pair\n", $lambda | |
set var $lambda = 0 | |
else | |
set var $next_lambda = (void**)($lambda[4]) | |
set var $val = (void**)($lambda[5]) | |
printf "├─ " | |
pnat $val $succ_impl $zero_impl | |
set var $lambda = $next_lambda | |
end | |
end | |
if $cur_captures == 1 || $cur_captures > 2 | |
printf "error: cannot be a list: lambda at %p has invalid captures for list\n", $lambda | |
set var $lambda = 0 | |
end | |
end | |
end |
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