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Diffstat (limited to 'results/scraper/launchpad-without-comments/526653')
| -rw-r--r-- | results/scraper/launchpad-without-comments/526653 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/526653 b/results/scraper/launchpad-without-comments/526653 new file mode 100644 index 00000000..ecbe5898 --- /dev/null +++ b/results/scraper/launchpad-without-comments/526653 @@ -0,0 +1,38 @@ +Breakpoint on Memory address fails with KVM + +Using QEMU version 0.12.50 under ubuntu Karmic x64 + +To reproduce the error using a floppy with a bootloder: +qemu-system-x86_64 -s -S -fda floppy.img -boot a -enable-kvm + +connect with gdb: +(gdb) set arch i8086 +The target architecture is assumed to be i8086 +(gdb) target remote localhost:1234 +Remote debugging using localhost:1234 +0x0000fff0 in ?? () +(gdb) break *0x7c00 +Breakpoint 1 at 0x7c00 +(gdb) continue +Continuing. + +The breakpoint is not hit. + +If you close qemu and start it without kvm support: + +qemu-system-x86_64 -s -S -fda floppy.img -boot a + +(gdb) set arch i8086 +The target architecture is assumed to be i8086 +(gdb) target remote localhost:1234 +Remote debugging using localhost:1234 +0x0000fff0 in ?? () +(gdb) break *0x7c00 +Breakpoint 1 at 0x7c00 +(gdb) continue +Continuing. + +Breakpoint 1, 0x00007c00 in ?? () +(gdb) + +The breakpoint is hit. If you wait until after the bootloader has been loaded into memory, you can properly set breakpoints with or without kvm enabled. \ No newline at end of file |