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[GDB] Remove unused DR6 debug register variable

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This commit is contained in:
Stefan Hajnoczi 2008-06-13 20:11:41 +01:00 committed by Michael Brown
parent 578b056730
commit fe79edfc3d
1 changed files with 3 additions and 4 deletions
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7
src/arch/i386/core/gdbmach.c
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@ -44,7 +44,6 @@ struct hwbp {
static struct hwbp hwbps [ 4 ];
static gdbreg_t dr7 = DR7_CLEAR;
static gdbreg_t dr6;
static struct hwbp *gdbmach_find_hwbp ( int type, unsigned long addr, size_t len ) {
struct hwbp *available = NULL;
@ -131,14 +130,14 @@ int gdbmach_set_breakpoint ( int type, unsigned long addr, size_t len, int enabl
}
static void gdbmach_disable_hwbps ( void ) {
/* Store and clear breakpoint status register */
__asm__ __volatile__ ( "movl %%dr6, %0\n" "movl %1, %%dr6\n" : "=r" ( dr6 ) : "r" ( DR6_CLEAR ) );
/* Store and clear hardware breakpoints */
__asm__ __volatile__ ( "movl %0, %%dr7\n" : : "r" ( DR7_CLEAR ) );
}
static void gdbmach_enable_hwbps ( void ) {
/* Clear breakpoint status register */
__asm__ __volatile__ ( "movl %0, %%dr6\n" : : "r" ( DR6_CLEAR ) );
/* Restore hardware breakpoints */
__asm__ __volatile__ ( "movl %0, %%dr7\n" : : "r" ( dr7 ) );
}