Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

2011-12-13 Pedro Alves <pedro@codesourcery.com>

Browse Source 
PR remote/13492

	* i386-low.c (i386_low_stopped_data_address): Avoid fetching
	DR_CONTROL unless necessary.  Extend comments.
	* linux-x86-low.c (x86_linux_prepare_to_resume): Don't write to
	DR0-3 if not used.  If any watchpoint was set, clear DR_STATUS.
This commit is contained in:
Pedro Alves
2011-12-13 16:11:26 +00:00
parent fabde4854c
commit 6210a125f8
3 changed files with 68 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
gdb/gdbserver/linux-x86-low.c
View File

@@ -655,6 +655,7 @@ static void
x86_linux_prepare_to_resume (struct lwp_info *lwp)
{
ptid_t ptid = ptid_of (lwp);
int clear_status = 0;
if (lwp->arch_private->debug_registers_changed)
{
@@ -665,14 +666,23 @@ x86_linux_prepare_to_resume (struct lwp_info *lwp)
= &proc->private->arch_private->debug_reg_state;
for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++)
x86_linux_dr_set (ptid, i, state->dr_mirror[i]);
if (state->dr_ref_count[i] > 0)
{
x86_linux_dr_set (ptid, i, state->dr_mirror[i]);
/* If we're setting a watchpoint, any change the inferior
had done itself to the debug registers needs to be
discarded, otherwise, i386_low_stopped_data_address can
get confused. */
clear_status = 1;
}
x86_linux_dr_set (ptid, DR_CONTROL, state->dr_control_mirror);
lwp->arch_private->debug_registers_changed = 0;
}
if (lwp->stopped_by_watchpoint)
if (clear_status || lwp->stopped_by_watchpoint)
x86_linux_dr_set (ptid, DR_STATUS, 0);
}