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[Qemu-devel] [PATCH 11/13] Add debug exception hook
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] [PATCH 11/13] Add debug exception hook |
Date: |
Thu, 03 Jul 2008 18:02:46 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
This patch allows to hook into the delivery of EXCP_DEBUG so that other
use beyond guest debugging becomes possible.
Signed-off-by: Jan Kiszka <address@hidden>
---
cpu-exec.c | 13 +++++++++++++
exec-all.h | 4 ++++
2 files changed, 17 insertions(+)
Index: b/cpu-exec.c
===================================================================
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -232,6 +232,16 @@ static inline TranslationBlock *tb_find_
return tb;
}
+static CPUDebugExcpHandler *debug_excp_handler;
+
+CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler)
+{
+ CPUDebugExcpHandler *old_handler = debug_excp_handler;
+
+ debug_excp_handler = handler;
+ return old_handler;
+}
+
static void cpu_handle_debug_exception(CPUState *env)
{
CPUWatchpoint *wp;
@@ -239,6 +249,9 @@ static void cpu_handle_debug_exception(C
if (!env->watchpoint_hit)
for (wp = env->watchpoints; wp != NULL; wp = wp->next)
wp->flags &= ~BP_WATCHPOINT_HIT;
+
+ if (debug_excp_handler)
+ debug_excp_handler(env);
}
/* main execution loop */
Index: b/exec-all.h
===================================================================
--- a/exec-all.h
+++ b/exec-all.h
@@ -418,3 +418,7 @@ static inline int kqemu_is_ok(CPUState *
}
#endif
+
+typedef void (CPUDebugExcpHandler)(CPUState *env);
+
+CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler);
- [Qemu-devel] [PATCH 0/13] Enhance debugging support - 2nd take, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 12/13] Introduce BP_CPU as a breakpoint type, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 2/13] Refactor and enhance break/watchpoint API, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 1/13] Return appropriate watch message to gdb, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 11/13] Add debug exception hook,
Jan Kiszka <=
- [Qemu-devel] [PATCH 9/13] Improve debugging of SMP guests, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 8/13] Remove premature memop TB terminations, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 6/13] Switch self-modified code recompilation to next_cflags, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 13/13] x86: Debug register emulation, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 10/13] Introduce BP_WATCHPOINT_HIT flag, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 4/13] Respect length of watchpoints, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 7/13] Restore pc on watchpoint hits, Jan Kiszka, 2008/07/03
- [Qemu-devel] [PATCH 3/13] Set mem_io_vaddr on io_read, Jan Kiszka, 2008/07/03