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How to enable hardware breakpoint support
- From: DeD MustDIE <dedmustdie at gmail dot com>
- To: gdb at sourceware dot org
- Date: Thu, 18 Nov 2010 12:33:19 +0300
- Subject: How to enable hardware breakpoint support
Hi.
I have same problem on 2 different machines.
GBD can set only software breakpoint but not hardware.
Example:
gdb -q `which df`
(gdb) hb *0x400d70
No hardware breakpoint support in the target.
First machine is my workstation.
Intel(R) Pentium(R) 4 CPU 3.06GHz
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc
pebs bts pni dtes64 monitor ds_cpl tm2 cid cx16 xtpr lahf_lm
Linux miha-desktop 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16
20:36:48 UTC 2010 i686 GNU/Linux
GNU gdb (GDB) 7.2-ubuntu
Second one is server:
CPU: Intel(R) Xeon(R) CPU 5120 @ 1.86GHz (1862.06-MHz K8-class CPU)
Features=<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA>
AMD Features=0x20000800<SYSCALL,LM>
AMD Features2=0x1<LAHF>
FreeBSD 8.1-RELEASE-p1 Thu Oct 7 18:29:43 MSD 2010 amd64 custom kernel
GNU gdb 6.6 [GDB v6.6 for FreeBSD]
or
GNU gdb 6.1.1 [FreeBSD]
------------------------------
Laletin Michael