This is the mail archive of the
gdb@sourceware.org
mailing list for the GDB project.
Write watchpoints
- From: Guillaume MENANT <guillaume dot menant at geensys dot com>
- To: gdb at sourceware dot org
- Date: Wed, 5 Mar 2008 23:06:26 -0800 (PST)
- Subject: Write watchpoints
Hello,
I'm currently working with a modified version of GDB (sparc-elf-gdb
delivered by Gaisler). I'm creating a software which makes the link between
this GDB and an Sparc evaluation board. I'm also working with Eclipse (my
toolchain is : Eclipse <-> sparc-elf-gdb <-> My software <-> Evaluation
board.
I'm trying to implement watchpoints management in my software but it doesn't
works. For a write watchpoint at 0x800000A4, GDB sets it (Z2) and then the
watchpoint triggers on my board (just before executing the asm instruction
which modifies the 0x800000A4 address), so I send back the answer
T05watch800000A4 to GDB before effectively writing to the 0x800000A4
address. Then GDB reads the system registers (G), reads at the 0x800000A4
address, unsets the watchpoint, reads at the 0x800000A4 address, re-sets the
watchpoint (at the same address) and make a continue. Then the watchpoint
triggers again immediately because the instruction modifying the 0x800000A4
address has not been executed before.
What is the problem with this GDB flow ? What can I do ?
Thanks.
--
View this message in context: http://www.nabble.com/Write-watchpoints-tp15867705p15867705.html
Sent from the Sourceware - gdb list mailing list archive at Nabble.com.