Re: [Qemu-devel] QEMU TCG code does not build with OpenBSD PowerPC

[Brad <brad@comstyle.com>]

On Sat, Apr 11, 2009 at 10:58:06AM +0400, malc wrote:
> On Fri, 10 Apr 2009, Brad wrote:
> 
> > Trying to build on an OpenBSD PowerPC machine dies pretty quickly
> > in the TCG PowerPC code..
> > 
> >    CC    i386-softmmu/exec.o
> >  In file included from /usr/obj/ports/qemu-0.10.2/qemu-0.10.2/tcg/tcg.h:24,
> >                   from /usr/obj/ports/qemu-0.10.2/qemu-0.10.2/exec.c:39:
> >  /usr/obj/ports/qemu-0.10.2/qemu-0.10.2/tcg/ppc/tcg-target.h:76:2: #error 
> > Unsupported system
> >  gmake[1]: *** [exec.o] Error 1
> > 
> > Any help with this?
> 
> You need to know which ABI OpenBSD/PPC uses. A shot in the dark would be
> to try something like:

After speaking to the PowerPC maintainer to double check, we're
using the standard SVR4 ABI so this should be good..

Also as far as I know this should also apply to FreeBSD and NetBSD
when running on PowerPC, but I'll leave it at this for now.


--- tcg/ppc/tcg-target.c.orig	Fri May  8 02:39:52 2009
+++ tcg/ppc/tcg-target.c	Fri May  8 02:41:24 2009
@@ -109,7 +109,7 @@ static const int tcg_target_reg_alloc_order[] = {
     TCG_REG_R11,
 #endif
     TCG_REG_R12,
-#ifndef __linux__
+#if !defined(__linux__) && !defined(__OpenBSD__)
     TCG_REG_R13,
 #endif
     TCG_REG_R0,
@@ -1535,7 +1535,7 @@ void tcg_target_init(TCGContext *s)
 #ifndef __APPLE__
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_R2);
 #endif
-#ifdef __linux__
+#if defined(__linux__) || defined(__OpenBSD__)
     tcg_regset_set_reg(s->reserved_regs, TCG_REG_R13);
 #endif
 
--- tcg/ppc/tcg-target.h.orig	Mon Apr  6 22:04:47 2009
+++ tcg/ppc/tcg-target.h	Sun Apr 26 20:15:41 2009
@@ -69,7 +69,7 @@ enum {
 #define TCG_TARGET_CALL_STACK_OFFSET 24
 #elif defined _AIX
 #define TCG_TARGET_CALL_STACK_OFFSET 52
-#elif defined __linux__
+#elif defined __linux__ || defined __OpenBSD__
 #define TCG_TARGET_CALL_ALIGN_ARGS 1
 #define TCG_TARGET_CALL_STACK_OFFSET 8
 #else

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