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是的，是没有action的原因。 1.发现一个错误,mips has reg 31,which is ra. diff --git a/lib/gtp.c b/lib/gtp.c index 07fea25..978ecf2 100644 --- a/lib/gtp.c +++ b/lib/gtp.c @@ -582,7 +582,7 @@ gtp_action_reg_read(struct pt_regs *regs, struct gtp_entry *tpe, int num) num -= 90; } - if (num >= 0 && num < 31) { + if (num >= 0 && num <= 31) { ret = regs->regs[num]; } else { switch (num) { 2. sudo gdb72 vmlinux GNU gdb (GDB) 7.2.50.20101216-cvs Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "--host=mipsel-unknown-linux-gnu --target=mipsel-linux". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /work/rt4ls/vmlinux...done. (gdb) target remote /proc/gtp Remote debugging using /proc/gtp 0x0000000000000000 in ?? () (gdb) trace ext3_lookup Tracepoint 1 at 0xffffffff80382654: file fs/ext3/namei.c, line 1036. (gdb) actions Enter actions for tracepoint 1, one per line. End with a line saying just "end". >collect *(unsigned char *)$rsp@512 $rsp is not a trace state variable; GDB agent expressions cannot use convenience variables. 是我gdb版本的问题吗？ 为什么$rsp用不了，另外怎么查看都有那些trace state variable. 还有commands和action对于高版本的gdb来说有区别吗? Hui Zhu 写道: 这个LOG清晰一点了 看起来貌似是因为你没设置任何ACTION 而KGTP处理没有ACTION的tracepoint的时候有点问题 一会我编完新KERNEL就测试一下这个问题 多谢你报这个BUG Thanks, Hui 2010/12/17 乔崇 <qiaochong@xxxxxxxxxxx>:1.gdb infomation GNU gdb (GDB) 7.2.50.20101216-cvs Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "--host=mipsel-unknown-linux-gnu --target=mipsel-linux". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /work/rt4ls/vmlinux...done. (gdb)target remote /pro/gtp Remote debugging using /proc/gtp sending: "qSupported:qRelocInsn+" received: "ConditionalTracepoints+;TracepointSource+;DisconnectedTracing+" sending: "Hg0" received: "" sending: "?" received: "S05" sending: "Hc-1" received: "" sending: "qC" received: "" sending: "qAttached" received: "" sending: "qOffsets" received: "" sending: "Hg0" received: "" sending: "g" received: "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" sending: "g" received: "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" sending: "m0,4" received: "E0e" sending: "mfffffffffffffffc,4" received: "E0e" sending: "m0,4" received: "E0e" 0x0000000000000000 in ?? () sending: "qSymbol::" received: "" sending: "qTStatus" received: "T0;tnotrun:0;tframes:0;tcreated:0;tsize:500000;tfree:500000;circular:0;disconn:0" remote_get_noisy_reply(): T0;tnotrun:0;tframes:0;tcreated:0;tsize:500000;tfree:500000;circular:0;disconn:0 sending: "qTfV" received: "1:0:1:63757272656e745f7461736b" sending: "qTsV" received: "l" sending: "qTfP" received: "l" (gdb) trace ext3_lookup sending: "mffffffff80382654,4" received: "3400a28c" Tracepoint 1 at 0xffffffff80382654: file fs/ext3/namei.c, line 1036. (gdb) tstart sending: "QTinit" received: "OK" remote_get_noisy_reply(): OK sending: "QTDP:1:ffffffff80382654:E:0:0" received: "E16" remote_get_noisy_reply(): E16 remote.c: error in outgoing packet at field #6. (gdb) quit A debugging session is active. Inferior 1 [Remote target] will be killed. Quit anyway? (y or n) sending: "qTStatus" received: "T0;tnotrun:0;tframes:0;tcreated:0;tsize:500000;tfree:500000;circular:0;disconn:0" remote_get_noisy_reply(): T0;tnotrun:0;tframes:0;tcreated:0;tsize:500000;tfree:500000;circular:0;disconn:0 sending: "k" 2.gtp printk msg [25845.244000] gtp_open [25845.244000] gtp_ioctl: 540d [25845.244000] gtp_ioctl: 540d [25845.244000] gtp_ioctl: 540e [25845.244000] gtp_ioctl: 540d [25845.244000] gtp_ioctl: 5407 [25845.244000] gtp_write: qSupported:qRelocInsn+ [25845.244000] gtp_ioctl: 540d [25845.244000] gtp_ioctl: 540d [25845.244000] gtp_ioctl: 540e [25845.244000] gtp_ioctl: 540d [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: Hg0 [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: ? [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: Hc-1 [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: qC [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: qAttached [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: qOffsets [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: Hg0 [25845.244000] gtp_read [25845.244000] gtp_read [25845.244000] gtp_write: g [25845.244000] gtp_read [25845.244000] gtp_read [25845.260000] gtp_write: g [25845.260000] gtp_read [25845.260000] gtp_read [25845.272000] gtp_write: m0,4 [25845.272000] gtp_gdbrsp_m: addr = 0x0 len = 4 [25845.272000] gtp_read [25845.272000] gtp_read [25845.272000] gtp_write: mfffffffffffffffc,4 [25845.272000] gtp_gdbrsp_m: addr = 0xfffffffffffffffc len = 4 [25845.272000] gtp_read [25845.272000] gtp_read [25845.336000] gtp_write: m0,4 [25845.336000] gtp_gdbrsp_m: addr = 0x0 len = 4 [25845.336000] gtp_read [25845.336000] gtp_read [25845.348000] gtp_write: qSymbol:: [25845.348000] gtp_read [25845.348000] gtp_read [25845.348000] gtp_write: qTStatus [25845.348000] gtp_gdbrsp_qT: Status [25845.348000] gtp_read [25845.348000] gtp_read [25845.348000] gtp_write: qTfV [25845.348000] gtp_gdbrsp_qT: fV [25845.348000] gtp_read [25845.348000] gtp_read [25845.352000] gtp_write: qTsV [25845.352000] gtp_gdbrsp_qT: sV [25845.352000] gtp_read [25845.352000] gtp_read [25845.352000] gtp_write: qTfP [25845.352000] gtp_gdbrsp_qT: fP [25845.352000] gtp_read [25845.352000] gtp_read [25856.372000] gtp_write: mffffffff80382654,4 [25856.372000] gtp_gdbrsp_m: addr = 0xffffffff80382654 len = 4 [25856.372000] gtp_gdbrsp_m: 0 34 [25856.372000] gtp_gdbrsp_m: 1 00 [25856.372000] gtp_gdbrsp_m: 2 a2 [25856.372000] gtp_gdbrsp_m: 3 8c [25856.372000] gtp_read [25856.372000] gtp_read [25859.272000] gtp_write: QTinit [25859.272000] gtp_gdbrsp_QT: init [25859.272000] gtp_gdbrsp_qtinit [25859.272000] gtp_gdbrsp_QT: return 0 [25859.272000] gtp_read [25859.272000] gtp_read [25859.272000] gtp_write: QTDP:1:ffffffff80382654:E:0:0 [25859.272000] gtp_gdbrsp_QT: DP:1:ffffffff80382654:E:0:0 [25859.272000] gtp_gdbrsp_qtdp: 1:ffffffff80382654:E:0:0 [25859.272000] gtp_gdbrsp_QT: return -22 [25859.272000] gtp_read [25859.272000] gtp_read [25863.180000] gtp_write: qTStatus [25863.180000] gtp_gdbrsp_qT: Status [25863.180000] gtp_read [25863.180000] gtp_read [25863.180000] gtp_write: k [25863.180000] gtp_read [25863.180000] gtp_release [25863.180000] gtp_gdbrsp_qtstop [25863.180000] gtp_gdbrsp_qtinit --
乔崇 qiaochong@xxxxxxxxxxx 龙芯中科技术服务中心有限公司 office:010-62600855-615 mobile:135219906142010年 12月 17日 星期五 13:33:55 CST |
