From b277e1ef5e29300b216da297004a8e327bb53b8f Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang.org>
Date: Tue, 18 Oct 2016 10:11:38 +0200
Subject: erts: Add etp-disasm gdb macro
---
erts/etc/unix/etp-commands.in | 72 ++++++++++++++++++++++++++++++++++++++-----
1 file changed, 65 insertions(+), 7 deletions(-)
(limited to 'erts/etc')
diff --git a/erts/etc/unix/etp-commands.in b/erts/etc/unix/etp-commands.in
index e2bf302cca..1a4f641301 100644
--- a/erts/etc/unix/etp-commands.in
+++ b/erts/etc/unix/etp-commands.in
@@ -52,7 +52,7 @@ document etp-help
% etpf-cons, etpf-boxed,
%
% Special commands for not really terms:
-% etp-mfa, etp-cp,
+% etp-mfa, etp-cp, etp-disasm,
% etp-msgq, etpf-msgq,
% etp-stacktrace, etp-stackdump, etpf-stackdump, etp-dictdump
% etp-process-info, etp-process-memory-info
@@ -1090,12 +1090,10 @@ document etp-mfa
%---------------------------------------------------------------------------
end
-
-
-define etp-cp-1
+define etp-cp-func-info-1
# Args: Eterm cp
#
-# Non-reentrant
+# Non-reentrant, takes cp, sets $etp_cp_p to MFA in func_info
#
set $etp_cp = (Eterm)($arg0)
set $etp_ranges = &r[(int)the_active_code_index]
@@ -1136,9 +1134,22 @@ define etp-cp-1
end
end
end
+ if $etp_cp_p
+ set $cp_cp_p_offset = ($etp_cp-((Eterm)($etp_cp_p-2)))
+ else
+ set $cp_cp_p_offset = 0
+ end
+end
+
+define etp-cp-1
+# Args: Eterm cp
+#
+# Non-reentrant
+#
+ etp-cp-func-info-1 $arg0
if $etp_cp_p
printf "#Cp"
- etp-mfa-1 ($etp_cp_p) ($etp_cp-((Eterm)($etp_cp_p-2)))
+ etp-mfa-1 $etp_cp_p $cp_cp_p_offset
else
if $etp_cp == beam_apply+1
printf "#Cp<terminate process normally>"
@@ -2478,11 +2489,58 @@ end
document etp-schedulers
%---------------------------------------------------------------------------
% etp-schedulers
-%
+%
% Print misc info about all schedulers
%---------------------------------------------------------------------------
end
+define etp-disasm-1
+ set $code_ptr = ((BeamInstr*)$arg0)
+ set $addr = *$code_ptr
+ set $i = 0
+ while $i < (sizeof(opc) / sizeof(OpEntry))
+ if $addr == beam_ops[$i]
+ printf "%s %d", opc[$i].name, opc[$i].sz
+ set $next_i = $code_ptr + opc[$i].sz
+ set $i += 4999
+ end
+ set $i++
+ end
+end
+
+define etp-disasm
+ etp-cp-func-info-1 $arg0
+ if $etp_cp_p == 0
+ printf "invalid argument"
+ else
+ etp-mfa-1 $etp_cp_p $cp_cp_p_offset
+ printf ": "
+ etp-disasm-1 $arg0
+ printf "\r\n"
+ while $next_i < ((BeamInstr*)$arg1)
+ set $prev_i = $next_i
+ etp-cp-func-info-1 $next_i
+ etp-mfa-1 $etp_cp_p $cp_cp_p_offset
+ printf ": "
+ etp-disasm-1 $next_i
+ if $prev_i == $next_i
+ # ptr did not advance, we are inside some strange opcode with argument
+ set $next_i++
+ printf "instr argument"
+ end
+ printf "\r\n"
+ end
+ end
+end
+
+document etp-disasm
+%---------------------------------------------------------------------------
+% etp-disasm StartI EndI
+%
+% Disassemble the code inbetween StartI and EndI
+%---------------------------------------------------------------------------
+end
+
define etp-migration-info
set $minfo = (ErtsMigrationPaths *) *((UWord *) &erts_migration_paths)
set $rq_ix = 0
--
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