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don't steal %ebx for the GC on x86: it's also used by PIC
[ghc-hetmet.git]
/
rts
/
sm
/
GCThread.h
diff --git
a/rts/sm/GCThread.h
b/rts/sm/GCThread.h
index
d4376f7
..
1b5c5d4
100644
(file)
--- a/
rts/sm/GCThread.h
+++ b/
rts/sm/GCThread.h
@@
-196,7
+196,9
@@
extern gc_thread **gc_threads;
#define GLOBAL_REG_DECL(type,name,reg) register type name REG(reg);
#define GLOBAL_REG_DECL(type,name,reg) register type name REG(reg);
-#if defined(REG_Base)
+#if defined(REG_Base) && !defined(i386_HOST_ARCH)
+// on i386, REG_Base is %ebx which is also used for PIC, so we don't
+// want to steal it
GLOBAL_REG_DECL(gc_thread*, gct, REG_Base)
#define DECLARE_GCT /* nothing */
GLOBAL_REG_DECL(gc_thread*, gct, REG_Base)
#define DECLARE_GCT /* nothing */