| \ backtrace handling |
\ backtrace handling |
| |
|
| \ Copyright (C) 1999,2000 Free Software Foundation, Inc. |
\ Copyright (C) 1999,2000,2003,2004,2006 Free Software Foundation, Inc. |
| |
|
| \ This file is part of Gforth. |
\ This file is part of Gforth. |
| |
|
| \ Gforth is free software; you can redistribute it and/or |
\ Gforth is free software; you can redistribute it and/or |
| \ modify it under the terms of the GNU General Public License |
\ modify it under the terms of the GNU General Public License |
| \ as published by the Free Software Foundation; either version 2 |
\ as published by the Free Software Foundation, either version 3 |
| \ of the License, or (at your option) any later version. |
\ of the License, or (at your option) any later version. |
| |
|
| \ This program is distributed in the hope that it will be useful, |
\ This program is distributed in the hope that it will be useful, |
| \ GNU General Public License for more details. |
\ GNU General Public License for more details. |
| |
|
| \ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
| \ along with this program; if not, write to the Free Software |
\ along with this program. If not, see http://www.gnu.org/licenses/. |
| \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
|
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| \ growing buffers that need not be full |
\ growing buffers that need not be full |
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|
| \ backtrace stuff |
\ backtrace stuff |
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|
| create backtrace-rs-buffer buffer% %allot \ copy of the return stack at throw |
create backtrace-rs-buffer buffer% %allot drop |
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\ copy of the return stack at throw |
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|
| : init-backtrace ( -- ) |
: init-backtrace ( -- ) |
| backtrace-rs-buffer init-buffer ; |
backtrace-rs-buffer init-buffer ; |
| else \ throw by signal handler with insufficient information |
else \ throw by signal handler with insufficient information |
| handler @ cell - \ beyond that we know nothing |
handler @ cell - \ beyond that we know nothing |
| then |
then |
| backtrace-rp0 @ [ 2 cells ]L - over - 0 max ; |
backtrace-rp0 @ [ 1 cells ]L - over - 0 max ; |
| |
|
| :noname ( -- ) |
:noname ( -- ) |
| backtrace-empty @ |
|
| if |
|
| backtrace-return-stack |
backtrace-return-stack |
| dup backtrace-rs-buffer adjust-buffer |
dup backtrace-rs-buffer adjust-buffer |
| backtrace-rs-buffer buffer-address @ swap move |
backtrace-rs-buffer buffer-address @ swap move ; |
| backtrace-empty off |
|
| then ; |
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| IS store-backtrace |
IS store-backtrace |
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|
| : print-backtrace ( addr1 addr2 -- ) |
: print-bt-entry ( return-stack-item -- ) |
| \G print a backtrace for the return stack addr1..addr2 |
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| cr ." Backtrace:" |
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| swap u+do |
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| cr |
|
| i @ dup hex. ( return-addr? ) |
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| cell - dup in-dictionary? over dup aligned = and |
cell - dup in-dictionary? over dup aligned = and |
| if |
if |
| @ look |
@ dup threaded>name dup if |
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.name drop |
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else |
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drop dup look if |
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.name drop |
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else |
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drop body> look \ !! check for "call" in cell before? |
| if |
if |
| .name |
.name |
| else |
else |
| drop |
drop |
| then |
then |
| |
then |
| |
then |
| else |
else |
| drop |
drop |
| then |
then ; |
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|
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: print-backtrace ( addr1 addr2 -- ) |
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\G print a backtrace for the return stack addr1..addr2 |
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cr ." Backtrace:" |
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swap u+do |
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cr |
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i @ dup hex. ( return-addr? ) |
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print-bt-entry |
| cell +loop ; |
cell +loop ; |
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|
| :noname ( -- ) |
:noname ( -- ) |
| backtrace-rs-buffer 2@ over + print-backtrace ; |
backtrace-rs-buffer 2@ over + print-backtrace ; |
| IS dobacktrace |
IS dobacktrace |
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[ifdef] defer-default |
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:noname |
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r@ >stderr cr ." deferred word " print-bt-entry ." is uninitialized" ; |
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is defer-default |
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[then] |
