|
From: | Shashidhar Mysore |
Subject: | Re: [Qemu-devel] Re: PC traces from QEMU |
Date: | Mon, 2 Apr 2007 15:32:12 -0700 |
On Thu, Mar 29, 2007 at 06:28:14PM -0700, Shashidhar Mysore wrote:
> Hi Stuart,
>
> Thanks for the reply, but since I'm a little new to qemu, can you please
> elaborate on how to insert the op_dump_pc function to extract the PC values?
Well, here's a patch that does it:
Index: target-i386/exec.h
===================================================================
RCS file: /sources/qemu/qemu/target-i386/exec.h,v
retrieving revision 1.31
diff -u -r1.31 exec.h
--- target-i386/exec.h 24 Sep 2006 18:40:46 -0000 1.31
+++ target-i386/exec.h 30 Mar 2007 11:02:08 -0000
@@ -146,6 +146,8 @@
extern CCTable cc_table[];
+void helper_dump_pc(target_ulong PC);
+
void load_seg(int seg_reg, int selector);
void helper_ljmp_protected_T0_T1(int next_eip);
void helper_lcall_real_T0_T1(int shift, int next_eip);
Index: target-i386/helper.c
===================================================================
RCS file: /sources/qemu/qemu/target-i386/helper.c,v
retrieving revision 1.74
diff -u -r1.74 helper.c
--- target-i386/helper.c 1 Feb 2007 22:12:19 -0000 1.74
+++ target-i386/helper.c 30 Mar 2007 11:02:09 -0000
@@ -30,6 +30,16 @@
} while (0)
#endif
+void helper_dump_pc(target_ulong pc)
+{
+ if (logfile)
+#ifdef TARGET_X86_64
+ fprintf(logfile, "PC = %016" PRIx64 "\n", pc);
+#else
+ fprintf(logfile, "PC = %08x\n", pc);
+#endif
+}
+
const uint8_t parity_table[256] = {
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
Index: target-i386/op.c
===================================================================
RCS file: /sources/qemu/qemu/target-i386/op.c,v
retrieving revision 1.47
diff -u -r1.47 op.c
--- target-i386/op.c 1 Feb 2007 22:11:07 -0000 1.47
+++ target-i386/op.c 30 Mar 2007 11:02:09 -0000
@@ -132,6 +132,11 @@
#endif
+void OPPROTO op_dump_pc(void)
+{
+ helper_dump_pc(PARAM1);
+}
+
/* operations with flags */
/* update flags with T0 and T1 (add/sub case) */
Index: target-i386/translate.c
===================================================================
RCS file: /sources/qemu/qemu/target-i386/translate.c,v
retrieving revision 1.62
diff -u -r1.62 translate.c
--- target-i386/translate.c 16 Jan 2007 19:28:58 -0000 1.62
+++ target-i386/translate.c 30 Mar 2007 11:02:10 -0000
@@ -3155,6 +3155,7 @@
int rex_w, rex_r;
s->pc = pc_start;
+ gen_op_dump_pc(s->pc);
prefixes = 0;
aflag = s->code32;
dflag = s->code32;
It's probably not the best way to do this, but it worked well enough for
my purposes. (target-z80 -- where there is only one address space! :-)
--
Stuart Brady
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