[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU
From: |
Thiemo Seufer |
Subject: |
Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU |
Date: |
Wed, 11 Apr 2007 17:05:16 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Atif Hashmi wrote:
> Hi Eduardo,
>
> Thanks a lot for your help. I really appreciate it. I have added the
> functionality that I wanted.
Just in case it might help somebody reading this list, I use the appended
patch to detect a special instruction pattern as pass/fail condition and
shut down qemu with the appropriate message.
Thiemo
Index: qemu-cvs/target-mips/exec.h
===================================================================
--- qemu-cvs.orig/target-mips/exec.h
+++ qemu-cvs/target-mips/exec.h
@@ -140,6 +140,9 @@
uint64_t do_sdr_kernel (uint64_t);
#endif
#endif
+void do_avp_ok (void);
+void do_avp_fail (void);
+
void do_pmon (int function);
void dump_sc (void);
Index: qemu-cvs/target-mips/op.c
===================================================================
--- qemu-cvs.orig/target-mips/op.c
+++ qemu-cvs/target-mips/op.c
@@ -954,6 +954,16 @@
OP_COND(lez, (int32_t)T0 <= 0);
OP_COND(ltz, (int32_t)T0 < 0);
+//
+void op_avp_ok (void) {
+ CALL_FROM_TB0(do_avp_ok);
+ RETURN();
+}
+void op_avp_fail (void) {
+ CALL_FROM_TB0(do_avp_fail);
+ RETURN();
+}
+
/* Branches */
//#undef USE_DIRECT_JUMP
Index: qemu-cvs/target-mips/op_helper.c
===================================================================
--- qemu-cvs.orig/target-mips/op_helper.c
+++ qemu-cvs/target-mips/op_helper.c
@@ -535,6 +535,18 @@
fputs("\n", logfile);
}
+void do_avp_ok (void)
+{
+ puts("ok");
+ qemu_system_shutdown_request();
+}
+
+void do_avp_fail (void)
+{
+ puts("fail");
+ qemu_system_shutdown_request();
+}
+
void do_pmon (int function)
{
function /= 2;
Index: qemu-cvs/target-mips/translate.c
===================================================================
--- qemu-cvs.orig/target-mips/translate.c
+++ qemu-cvs/target-mips/translate.c
@@ -881,6 +881,14 @@
uint32_t uimm;
const char *opn = "unk";
+if (opc == OPC_SLTIU && rs == 0 && rt == 0 && (((uint16_t)imm == 0xabc2) |
((uint16_t)imm == 0xabc1))) {
+ if ((uint16_t)imm == 0xabc2)
+ gen_op_avp_ok();
+ else
+ gen_op_avp_fail();
+ ctx->bstate = BS_STOP;
+ return;
+}
if (rt == 0 && opc != OPC_ADDI && opc != OPC_DADDI) {
/* if no destination, treat it as a NOP
* For addi, we must generate the overflow exception when needed.
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, (continued)
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Eduardo Felipe, 2007/04/17
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Atif Hashmi, 2007/04/17
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Eduardo Felipe, 2007/04/22
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Atif Hashmi, 2007/04/24
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Eduardo Felipe, 2007/04/24
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Atif Hashmi, 2007/04/25
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Atif Hashmi, 2007/04/25
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Eduardo Felipe, 2007/04/26
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Atif Hashmi, 2007/04/26
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU, Eduardo Felipe, 2007/04/27
- Re: [Qemu-devel] Re: Detecting an assembly instruction in QEMU,
Thiemo Seufer <=