[project @ 1998-02-05 12:23:33 by simonm]
[ghc-hetmet.git] / ghc / includes / StgMacros.lh
index baefd80..44d9a4d 100644 (file)
@@ -187,7 +187,7 @@ words of A stack and @b@ words of B stack.  If not, it calls
 
 NB: args @a@ and @b@ are pre-direction-ified!
 \begin{code}
-extern I_ SqueezeUpdateFrames PROTO((P_, P_, P_));
+I_ SqueezeUpdateFrames PROTO((P_, P_, P_));
 int sanityChk_StkO (P_ stko); /* ToDo: move to a sane place */
 
 #if ! defined(CONCURRENT)
@@ -208,7 +208,7 @@ extern void StackOverflow(STG_NO_ARGS) STG_NORETURN;
 
 #else /* threaded */
 
-extern I_ StackOverflow PROTO((W_, W_));
+I_ StackOverflow PROTO((W_, W_));
 
 /*
  * On a uniprocessor, we do *NOT* context switch on a stack overflow 
@@ -232,7 +232,7 @@ extern I_ StackOverflow PROTO((W_, W_));
 do {                                                           \
   DO_ASTK_HWM(); /* ticky-ticky profiling */                   \
   DO_BSTK_HWM();                                               \
-  if (STKS_OVERFLOW_OP((a_headroom) + 1, (b_headroom) + 1)) {  \
+  if (STKS_OVERFLOW_OP(((a_headroom) + 1), ((b_headroom) + 1))) {      \
     STACK_OVERFLOW(liveness_mask,a_headroom,b_headroom,spa,spb,ret_type,reenter);\
   }                                                            \
 }while(0)
@@ -240,37 +240,6 @@ do {                                                               \
 
 %************************************************************************
 %*                                                                     *
-\subsubsection[StgMacros-arity-chks]{Arity checks (for debugging)}
-%*                                                                     *
-%************************************************************************
-
-This is a debugging feature.  Each call to fast-entry-point code sets
-@ExpectedArity@ to some value, and the callee then checks that the
-value is as expected.
-
-\begin{code}
-#if defined(__DO_ARITY_CHKS__)
-
-extern I_                       ExpectedArity;
-extern void ArityError PROTO((I_)) STG_NORETURN;
-
-#define SET_ARITY(n) do { ExpectedArity = (n); } while(0)
-#define CHK_ARITY(n)                   \
-       do {                            \
-       if (ExpectedArity != (n)) {     \
-           ULTRASAFESTGCALL1(void,(void *, I_),ArityError,n);  \
-       }}while(0)
-
-#else /* ! __DO_ARITY_CHKS__: normal case */
-
-#define SET_ARITY(n) /* nothing */
-#define CHK_ARITY(n) /* nothing */
-
-#endif /* ! __DO_ARITY_CHKS__ */
-\end{code}
-
-%************************************************************************
-%*                                                                     *
 \subsubsection[StgMacros-heap-chks]{Heap-overflow checks}
 %*                                                                     *
 %************************************************************************
@@ -279,7 +248,7 @@ Please see the general discussion/commentary about ``what really
 happens in a GC,'' in \tr{SMinterface.lh}.
 
 \begin{code}
-extern void PerformGC PROTO((W_));
+void PerformGC PROTO((W_));
 void RealPerformGC PROTO((W_ liveness, W_ reqsize, W_  always_reenter_node, rtsBool do_full_collection));
 void checkInCCallGC(STG_NO_ARGS);
 
@@ -303,7 +272,7 @@ void StgPerformGarbageCollection(STG_NO_ARGS);
 
 #else /* CONCURRENT */
 
-extern void ReallyPerformThreadGC PROTO((W_, rtsBool));
+void ReallyPerformThreadGC PROTO((W_, rtsBool));
 
 #define HEAP_OVERFLOW(liveness,n,reenter)      \
     do {                                       \
@@ -421,12 +390,13 @@ even for 8-bit chars).
 #define ltCharZh(r,a,b)        r=(I_)((a)< (b))
 #define leCharZh(r,a,b)        r=(I_)((a)<=(b))
 
-#define gtIntZh(r,a,b) r=(I_)((a) >(b))
-#define geIntZh(r,a,b) r=(I_)((a)>=(b))
-#define eqIntZh(r,a,b) r=(I_)((a)==(b))
-#define neIntZh(r,a,b) r=(I_)((a)!=(b))
-#define ltIntZh(r,a,b) r=(I_)((a) <(b))
-#define leIntZh(r,a,b) r=(I_)((a)<=(b))
+/* Int comparisons: >#, >=# etc */
+#define ZgZh(r,a,b)    r=(I_)((a) >(b))
+#define ZgZeZh(r,a,b)  r=(I_)((a)>=(b))
+#define ZeZeZh(r,a,b)  r=(I_)((a)==(b))
+#define ZdZeZh(r,a,b)  r=(I_)((a)!=(b))
+#define ZlZh(r,a,b)    r=(I_)((a) <(b))
+#define ZlZeZh(r,a,b)  r=(I_)((a)<=(b))
 
 #define gtWordZh(r,a,b)        r=(I_)((a) >(b))
 #define geWordZh(r,a,b)        r=(I_)((a)>=(b))
@@ -449,12 +419,13 @@ even for 8-bit chars).
 #define ltFloatZh(r,a,b)  r=(I_)((a)< (b))
 #define leFloatZh(r,a,b)  r=(I_)((a)<=(b))
 
-#define gtDoubleZh(r,a,b) r=(I_)((a)> (b))
-#define geDoubleZh(r,a,b) r=(I_)((a)>=(b))
-#define eqDoubleZh(r,a,b) r=(I_)((a)==(b))
-#define neDoubleZh(r,a,b) r=(I_)((a)!=(b))
-#define ltDoubleZh(r,a,b) r=(I_)((a)< (b))
-#define leDoubleZh(r,a,b) r=(I_)((a)<=(b))
+/* Double comparisons: >##, >=#@ etc */
+#define ZgZhZh(r,a,b)  r=(I_)((a) >(b))
+#define ZgZeZhZh(r,a,b)        r=(I_)((a)>=(b))
+#define ZeZeZhZh(r,a,b)        r=(I_)((a)==(b))
+#define ZdZeZhZh(r,a,b)        r=(I_)((a)!=(b))
+#define ZlZhZh(r,a,b)  r=(I_)((a) <(b))
+#define ZlZeZhZh(r,a,b)        r=(I_)((a)<=(b))
 \end{code}
 
 %************************************************************************
@@ -479,13 +450,16 @@ even for 8-bit chars).
 \begin{code}
 I_ stg_div PROTO((I_ a, I_ b));
 
-#define plusIntZh(r,a,b)       r=(a)+(b)
-#define minusIntZh(r,a,b)      r=(a)-(b)
-#define timesIntZh(r,a,b)      r=(a)*(b)
+#define ZpZh(r,a,b)            r=(a)+(b)
+#define ZmZh(r,a,b)            r=(a)-(b)
+#define ZtZh(r,a,b)            r=(a)*(b)
 #define quotIntZh(r,a,b)       r=(a)/(b)
-#define divIntZh(r,a,b)                r=ULTRASAFESTGCALL2(I_,(void *, I_, I_),stg_div,(a),(b))
+/* ZdZh not used??? --SDM */
+#define ZdZh(r,a,b)            r=ULTRASAFESTGCALL2(I_,(void *, I_, I_),stg_div,(a),(b))
 #define remIntZh(r,a,b)                r=(a)%(b)
 #define negateIntZh(r,a)       r=-(a)
+/* Ever used ? -- SOF */
+#define absIntZh(a)            r=(( (a) >= 0 ) ? (a) : (-(a)))
 \end{code}
 
 %************************************************************************
@@ -495,8 +469,12 @@ I_ stg_div PROTO((I_ a, I_ b));
 %************************************************************************
 
 \begin{code}
+#define quotWordZh(r,a,b)      r=((W_)a)/((W_)b)
+#define remWordZh(r,a,b)       r=((W_)a)%((W_)b)
+
 #define andZh(r,a,b)   r=(a)&(b)
 #define orZh(r,a,b)    r=(a)|(b)
+#define xorZh(r,a,b)   r=(a)^(b)
 #define notZh(r,a)     r=~(a)
 
 #define shiftLZh(r,a,b)          r=(a)<<(b)
@@ -561,10 +539,10 @@ I_ stg_div PROTO((I_ a, I_ b));
 %************************************************************************
 
 \begin{code}
-#define plusDoubleZh(r,a,b)    r=(a)+(b)
-#define minusDoubleZh(r,a,b)   r=(a)-(b)
-#define timesDoubleZh(r,a,b)   r=(a)*(b)
-#define divideDoubleZh(r,a,b)  r=(a)/(b)
+#define ZpZhZh(r,a,b)          r=(a)+(b)
+#define ZmZhZh(r,a,b)          r=(a)-(b)
+#define ZtZhZh(r,a,b)          r=(a)*(b)
+#define ZdZhZh(r,a,b)          r=(a)/(b)
 #define negateDoubleZh(r,a)    r=-(a)
 
 #define int2DoubleZh(r,a)      r=(StgDouble)(a)
@@ -585,7 +563,8 @@ I_ stg_div PROTO((I_ a, I_ b));
 #define sinhDoubleZh(r,a)      r=(StgDouble) SAFESTGCALL1(StgDouble,(void *, StgDouble),sinh,a)
 #define coshDoubleZh(r,a)      r=(StgDouble) SAFESTGCALL1(StgDouble,(void *, StgDouble),cosh,a)
 #define tanhDoubleZh(r,a)      r=(StgDouble) SAFESTGCALL1(StgDouble,(void *, StgDouble),tanh,a)
-#define powerDoubleZh(r,a,b)   r=(StgDouble) SAFESTGCALL2(StgDouble,(void *, StgDouble,StgDouble),pow,a,b)
+/* Power: **## */
+#define ZtZtZhZh(r,a,b)        r=(StgDouble) SAFESTGCALL2(StgDouble,(void *, StgDouble,StgDouble),pow,a,b)
 \end{code}
 
 %************************************************************************
@@ -878,12 +857,12 @@ Encoding and decoding float-ish things is pretty Integer-ish.  We use
 these pretty magical support functions, essentially stolen from Lennart:
 \begin{code}
 StgFloat  __encodeFloat         PROTO((MP_INT *, I_));
-void  __decodeFloat  PROTO((MP_INT * /*result1*/,
+void      __decodeFloat  PROTO((MP_INT * /*result1*/,
                                I_ * /*result2*/,
                                StgFloat));
 
 StgDouble __encodeDouble PROTO((MP_INT *, I_));
-void  __decodeDouble PROTO((MP_INT * /*result1*/,
+void      __decodeDouble PROTO((MP_INT * /*result1*/,
                                I_ * /*result2*/,
                                StgDouble));
 \end{code}
@@ -900,12 +879,13 @@ Some floating-point format info, made with the \tr{enquire} program
  || m68k_TARGET_ARCH   \
  || mipsel_TARGET_ARCH \
  || mipseb_TARGET_ARCH \
- || powerpc_TARGET_ARCH
+ || powerpc_TARGET_ARCH \
+ || rs6000_TARGET_ARCH
 
 /* yes, it is IEEE floating point */
 #include "ieee-flpt.h"
 
-#if alpha_dec_osf1_TARGET      \
+#if alpha_TARGET_ARCH  \
  || i386_TARGET_ARCH           \
  || mipsel_TARGET_ARCH
 
@@ -922,7 +902,7 @@ Some floating-point format info, made with the \tr{enquire} program
 \end{code}
 
 \begin{code}
-#if alpha_dec_osf1_TARGET
+#if alpha_TARGET_ARCH
 #define encodeFloatZh(r, hp, aa,sa,da, expon)  encodeDoubleZh(r, hp, aa,sa,da, expon)
 #else
 #define encodeFloatZh(r, hp, aa,sa,da, expon)  \
@@ -948,7 +928,7 @@ Some floating-point format info, made with the \tr{enquire} program
   r = SAFESTGCALL2(StgDouble,(void *, MP_INT *, I_), __encodeDouble,&arg,(expon));\
 }
 
-#if alpha_dec_osf1_TARGET
+#if alpha_TARGET_ARCH
 #define decodeFloatZh(exponr, ar,sr,dr, hp, f) decodeDoubleZh(exponr, ar,sr,dr, hp, f)
 #else
 #define decodeFloatZh(exponr, ar,sr,dr, hp, f)                         \
@@ -1136,20 +1116,6 @@ extern I_ genSymZh(STG_NO_ARGS);
 extern I_ resetGenSymZh(STG_NO_ARGS);
 extern I_ incSeqWorldZh(STG_NO_ARGS);
 
-/* sigh again: without these some (notably "float") willnae work */
-extern I_ long2bytes__  PROTO((long,   unsigned char *));
-extern I_ int2bytes__   PROTO((int,    unsigned char *));
-extern I_ short2bytes__         PROTO((short,  unsigned char *));
-extern I_ float2bytes__         PROTO((float,  unsigned char *));
-extern I_ double2bytes__ PROTO((double, unsigned char *));
-
-/* these may not be necessary; and they create warnings (WDP) */
-extern I_ bytes2long__  PROTO((P_, I_ *));
-extern I_ bytes2int__   PROTO((P_, I_ *));
-extern I_ bytes2short__         PROTO((P_, I_ *));
-extern I_ bytes2float__         PROTO((P_, StgFloat *));
-extern I_ bytes2double__ PROTO((P_, StgDouble *));
-
 extern I_ byteArrayHasNUL__ PROTO((const char *, I_));
 \end{code}
 
@@ -1202,6 +1168,12 @@ of one ptr (not bytes).
 #define indexFloatArrayZh(r,a,i)  indexFloatOffAddrZh(r,BYTE_ARR_CTS(a),i)
 #define indexDoubleArrayZh(r,a,i) indexDoubleOffAddrZh(r,BYTE_ARR_CTS(a),i)
 
+#define indexCharOffForeignObjZh(r,fo,i)   indexCharOffAddrZh(r,ForeignObj_CLOSURE_DATA(fo),i)
+#define indexIntOffForeignObjZh(r,fo,i)    indexIntOffAddrZh(r,ForeignObj_CLOSURE_DATA(fo),i)
+#define indexAddrOffForeignObjZh(r,fo,i)   indexAddrOffAddrZh(r,ForeignObj_CLOSURE_DATA(fo),i)
+#define indexFloatOffForeignObjZh(r,fo,i)  indexFloatOffAddrZh(r,ForeignObj_CLOSURE_DATA(fo),i)
+#define indexDoubleOffForeignObjZh(r,fo,i) indexDoubleOffAddrZh(r,ForeignObj_CLOSURE_DATA(fo),i)
+
 #define indexCharOffAddrZh(r,a,i)   r= ((C_ *)(a))[i]
 #define indexIntOffAddrZh(r,a,i)    r= ((I_ *)(a))[i]
 #define indexAddrOffAddrZh(r,a,i)   r= ((PP_)(a))[i]
@@ -1305,14 +1277,14 @@ void newArrZh_init PROTO((P_ result, I_ n, P_ init));
 %************************************************************************
 
 \begin{code}
-ED_(Prelude_Z91Z93_closure);
+ED_(PrelBase_Z91Z93_closure);
 
 #define newSynchVarZh(r, hp)                           \
 {                                                      \
   ALLOC_PRIM(MUTUPLE_HS,3,0,MUTUPLE_HS+3) /* ticky ticky */; \
   CC_ALLOC(CCC,MUTUPLE_HS+3,ARR_K); /* cc prof */      \
   SET_SVAR_HDR(hp,EmptySVar_info,CCC);                 \
-  SVAR_HEAD(hp) = SVAR_TAIL(hp) = SVAR_VALUE(hp) = Prelude_Z91Z93_closure;     \
+  SVAR_HEAD(hp) = SVAR_TAIL(hp) = SVAR_VALUE(hp) = PrelBase_Z91Z93_closure;    \
   r = hp;                                              \
 }
 \end{code}
@@ -1320,22 +1292,22 @@ ED_(Prelude_Z91Z93_closure);
 \begin{code}
 #ifdef CONCURRENT
 
-extern void Yield PROTO((W_));
+void Yield PROTO((W_));
 
 #define takeMVarZh(r, liveness, node)                  \
 {                                                      \
   while (INFO_PTR(node) != (W_) FullSVar_info) {       \
-    if (SVAR_HEAD(node) == Prelude_Z91Z93_closure)             \
+    if (SVAR_HEAD(node) == PrelBase_Z91Z93_closure)            \
       SVAR_HEAD(node) = CurrentTSO;                    \
     else                                               \
       TSO_LINK(SVAR_TAIL(node)) = CurrentTSO;          \
-    TSO_LINK(CurrentTSO) = (P_) Prelude_Z91Z93_closure;                \
+    TSO_LINK(CurrentTSO) = (P_) PrelBase_Z91Z93_closure;               \
     SVAR_TAIL(node) = CurrentTSO;                      \
     DO_YIELD(liveness << 1);                           \
   }                                                    \
   SET_INFO_PTR(node, EmptySVar_info);                  \
   r = SVAR_VALUE(node);                                        \
-  SVAR_VALUE(node) = Prelude_Z91Z93_closure;                           \
+  SVAR_VALUE(node) = PrelBase_Z91Z93_closure;                          \
 }
 
 #else
@@ -1350,7 +1322,7 @@ extern void Yield PROTO((W_));
   }                                                    \
   SET_INFO_PTR(node, EmptySVar_info);                  \
   r = SVAR_VALUE(node);                                        \
-  SVAR_VALUE(node) = Prelude_Z91Z93_closure;                           \
+  SVAR_VALUE(node) = PrelBase_Z91Z93_closure;                          \
 }
 
 #endif
@@ -1378,18 +1350,18 @@ extern void Yield PROTO((W_));
   SET_INFO_PTR(node, FullSVar_info);                   \
   SVAR_VALUE(node) = value;                            \
   tso = SVAR_HEAD(node);                               \
-  if (tso != (P_) Prelude_Z91Z93_closure) {                            \
+  if (tso != (P_) PrelBase_Z91Z93_closure) {                           \
     if (DO_QP_PROF)                                    \
       STGCALL3(void,(void *, char *, P_, P_),QP_Event2,do_qp_prof > 1 ? "RA" : "RG",tso,CurrentTSO);   \
-    if (ThreadQueueHd == Prelude_Z91Z93_closure)               \
+    if (ThreadQueueHd == PrelBase_Z91Z93_closure)              \
       ThreadQueueHd = tso;                     \
     else                                               \
       TSO_LINK(ThreadQueueTl) = tso;           \
     ThreadQueueTl = tso;                               \
     SVAR_HEAD(node) = TSO_LINK(tso);                   \
-    TSO_LINK(tso) = (P_) Prelude_Z91Z93_closure;                       \
-    if(SVAR_HEAD(node) == (P_) Prelude_Z91Z93_closure)                 \
-      SVAR_TAIL(node) = (P_) Prelude_Z91Z93_closure;           \
+    TSO_LINK(tso) = (P_) PrelBase_Z91Z93_closure;                      \
+    if(SVAR_HEAD(node) == (P_) PrelBase_Z91Z93_closure)                \
+      SVAR_TAIL(node) = (P_) PrelBase_Z91Z93_closure;          \
   }                                                    \
 }
 
@@ -1407,18 +1379,18 @@ extern void Yield PROTO((W_));
   SET_INFO_PTR(node, FullSVar_info);                   \
   SVAR_VALUE(node) = value;                            \
   tso = SVAR_HEAD(node);                               \
-  if (tso != (P_) Prelude_Z91Z93_closure) {                            \
+  if (tso != (P_) PrelBase_Z91Z93_closure) {                           \
     if (DO_QP_PROF)                                    \
       STGCALL3(void,(void *, char *, P_, P_),QP_Event2,do_qp_prof > 1 ? "RA" : "RG",tso,CurrentTSO);   \
-    if (RunnableThreadsHd == Prelude_Z91Z93_closure)                   \
+    if (RunnableThreadsHd == PrelBase_Z91Z93_closure)                  \
       RunnableThreadsHd = tso;                         \
     else                                               \
       TSO_LINK(RunnableThreadsTl) = tso;               \
     RunnableThreadsTl = tso;                           \
     SVAR_HEAD(node) = TSO_LINK(tso);                   \
-    TSO_LINK(tso) = (P_) Prelude_Z91Z93_closure;                       \
-    if(SVAR_HEAD(node) == (P_) Prelude_Z91Z93_closure)                 \
-      SVAR_TAIL(node) = (P_) Prelude_Z91Z93_closure;           \
+    TSO_LINK(tso) = (P_) PrelBase_Z91Z93_closure;                      \
+    if(SVAR_HEAD(node) == (P_) PrelBase_Z91Z93_closure)                \
+      SVAR_TAIL(node) = (P_) PrelBase_Z91Z93_closure;          \
   }                                                    \
 }
 
@@ -1448,11 +1420,11 @@ extern void Yield PROTO((W_));
 #define readIVarZh(r, liveness, node)                  \
 {                                                      \
   if (INFO_PTR(node) != (W_) ImMutArrayOfPtrs_info) {  \
-    if (SVAR_HEAD(node) == Prelude_Z91Z93_closure)             \
+    if (SVAR_HEAD(node) == PrelBase_Z91Z93_closure)            \
       SVAR_HEAD(node) = CurrentTSO;                    \
     else                                               \
       TSO_LINK(SVAR_TAIL(node)) = CurrentTSO;          \
-    TSO_LINK(CurrentTSO) = (P_) Prelude_Z91Z93_closure;                \
+    TSO_LINK(CurrentTSO) = (P_) PrelBase_Z91Z93_closure;               \
     SVAR_TAIL(node) = CurrentTSO;                      \
     DO_YIELD(liveness << 1);                           \
   }                                                    \
@@ -1495,12 +1467,12 @@ extern void Yield PROTO((W_));
     EXIT(EXIT_FAILURE);                                        \
   }                                                    \
   tso = SVAR_HEAD(node);                               \
-  if (tso != (P_) Prelude_Z91Z93_closure) {                            \
-    if (ThreadQueueHd == Prelude_Z91Z93_closure)               \
+  if (tso != (P_) PrelBase_Z91Z93_closure) {                           \
+    if (ThreadQueueHd == PrelBase_Z91Z93_closure)              \
       ThreadQueueHd = tso;                     \
     else                                               \
       TSO_LINK(ThreadQueueTl) = tso;           \
-    while(TSO_LINK(tso) != Prelude_Z91Z93_closure) {                   \
+    while(TSO_LINK(tso) != PrelBase_Z91Z93_closure) {                  \
       if (DO_QP_PROF)                                  \
         STGCALL3(void,(void *, char *, P_, P_),QP_Event2,do_qp_prof > 1 ? "RA" : "RG",tso,CurrentTSO); \
       tso = TSO_LINK(tso);                             \
@@ -1527,12 +1499,12 @@ extern void Yield PROTO((W_));
     EXIT(EXIT_FAILURE);                                        \
   }                                                    \
   tso = SVAR_HEAD(node);                               \
-  if (tso != (P_) Prelude_Z91Z93_closure) {                            \
-    if (RunnableThreadsHd == Prelude_Z91Z93_closure)                   \
+  if (tso != (P_) PrelBase_Z91Z93_closure) {                           \
+    if (RunnableThreadsHd == PrelBase_Z91Z93_closure)                  \
       RunnableThreadsHd = tso;                         \
     else                                               \
       TSO_LINK(RunnableThreadsTl) = tso;               \
-    while(TSO_LINK(tso) != Prelude_Z91Z93_closure) {                   \
+    while(TSO_LINK(tso) != PrelBase_Z91Z93_closure) {                  \
       if (DO_QP_PROF)                                  \
         STGCALL3(void,(void *, char *, P_, P_),QP_Event2,do_qp_prof > 1 ? "RA" : "RG",tso,CurrentTSO); \
       tso = TSO_LINK(tso);                             \
@@ -1582,12 +1554,12 @@ extern void Yield PROTO((W_));
 
 #define delayZh(liveness, us)                          \
   {                                                    \
-    if (WaitingThreadsTl == Prelude_Z91Z93_closure)            \
+    if (WaitingThreadsTl == PrelBase_Z91Z93_closure)           \
       WaitingThreadsHd = CurrentTSO;                   \
     else                                               \
       TSO_LINK(WaitingThreadsTl) = CurrentTSO;         \
     WaitingThreadsTl = CurrentTSO;                     \
-    TSO_LINK(CurrentTSO) = Prelude_Z91Z93_closure;                     \
+    TSO_LINK(CurrentTSO) = PrelBase_Z91Z93_closure;                    \
     TSO_EVENT(CurrentTSO) = (W_) ((us) < 1 ? 1 : (us)); \
     DO_YIELD(liveness << 1);                           \
   }
@@ -1609,12 +1581,12 @@ extern void Yield PROTO((W_));
 
 #define waitReadZh(liveness, fd)                       \
   {                                                    \
-    if (WaitingThreadsTl == Prelude_Z91Z93_closure)            \
+    if (WaitingThreadsTl == PrelBase_Z91Z93_closure)           \
       WaitingThreadsHd = CurrentTSO;                   \
     else                                               \
       TSO_LINK(WaitingThreadsTl) = CurrentTSO;         \
     WaitingThreadsTl = CurrentTSO;                     \
-    TSO_LINK(CurrentTSO) = Prelude_Z91Z93_closure;                     \
+    TSO_LINK(CurrentTSO) = PrelBase_Z91Z93_closure;                    \
     TSO_EVENT(CurrentTSO) = (W_) (-(fd));              \
     DO_YIELD(liveness << 1);                           \
   }
@@ -1640,12 +1612,12 @@ extern void Yield PROTO((W_));
 
 #define waitWriteZh(liveness, fd)                      \
   {                                                    \
-    if (WaitingThreadsTl == Prelude_Z91Z93_closure)            \
+    if (WaitingThreadsTl == PrelBase_Z91Z93_closure)           \
       WaitingThreadsHd = CurrentTSO;                   \
     else                                               \
       TSO_LINK(WaitingThreadsTl) = CurrentTSO;         \
     WaitingThreadsTl = CurrentTSO;                     \
-    TSO_LINK(CurrentTSO) = Prelude_Z91Z93_closure;                     \
+    TSO_LINK(CurrentTSO) = PrelBase_Z91Z93_closure;                    \
     TSO_EVENT(CurrentTSO) = (W_) (-(fd+FD_SETSIZE));   \
     DO_YIELD(liveness << 1);                           \
   }
@@ -1701,7 +1673,8 @@ IF_RTS(void blockVtAlrmSignal(STG_NO_ARGS);)
 IF_RTS(void unblockVtAlrmSignal(STG_NO_ARGS);)
 IF_RTS(void AwaitEvent(I_ delta);)
 
-#ifdef _POSIX_SOURCE
+#if  defined(_POSIX_SOURCE) && !defined(nextstep3_TARGET_OS)
+       /* For nextstep3_TARGET_OS comment see stgdefs.h. CaS */
 extern I_ sig_install PROTO((I_, I_, sigset_t *));
 #define stg_sig_ignore(s,m)    SAFESTGCALL3(I_,(void *, I_, I_),sig_install,s,STG_SIG_IGN,(sigset_t *)m)
 #define stg_sig_default(s,m)   SAFESTGCALL3(I_,(void *, I_, I_),sig_install,s,STG_SIG_DFL,(sigset_t *)m)
@@ -1719,12 +1692,12 @@ extern I_ sig_install PROTO((I_, I_));
 
 StgInt getErrorHandler(STG_NO_ARGS);
 #ifndef PAR
-void raiseError PROTO((StgStablePtr handler));
+void   raiseError PROTO((StgStablePtr handler));
 StgInt catchError PROTO((StgStablePtr newErrorHandler));
 #endif
 void decrementErrorCount(STG_NO_ARGS);
 
-#define stg_catchError(sp)      SAFESTGCALL1(I_,(void *, StgStablePtr),catchError,sp)
+#define stg_catchError(sp)        SAFESTGCALL1(I_,(void *, StgStablePtr),catchError,sp)
 #define stg_decrementErrorCount() SAFESTGCALL0(void,(void *),decrementErrorCount)
 \end{code}
 
@@ -1764,7 +1737,6 @@ extern StgPtr _deRefStablePointer PROTO((StgInt, StgPtr));
 
 #define deRefStablePtrZh(ri,sp) \
    ri = SAFESTGCALL2(I_,(void *, I_, P_),_deRefStablePointer,sp,StorageMgrInfo.StablePointerTable);
-
 \end{code}
 
 Declarations for other stable pointer operations.
@@ -1821,7 +1793,7 @@ consider context switching...)
    any strictly increasing expression will do here */
 #define CalcNewNoSPtrs( i ) ((i)*2 + 100)
 
-extern void enlargeSPTable PROTO((P_, P_));
+void enlargeSPTable PROTO((P_, P_));
 
 #define makeStablePtrZh(stablePtr,liveness,unstablePtr)                    \
 do {                                                               \
@@ -1910,7 +1882,7 @@ Anything with tag >= 0 is in WHNF, so we discard it.
 \begin{code}
 #ifdef CONCURRENT
 
-ED_(Prelude_Z91Z93_closure);
+ED_(PrelBase_Z91Z93_closure);
 ED_(True_closure);
 
 #if defined(GRAN)
@@ -2009,7 +1981,7 @@ ED_(True_closure);
 extern I_ required_thread_count;
 
 #ifdef PAR
-#define COUNT_SPARK     TSO_GLOBALSPARKS(CurrentTSO)++
+#define COUNT_SPARK     TSO_GLOBALSPARKS(CurrentTSO)++; sparksCreated++
 #else
 #define COUNT_SPARK
 #endif
@@ -2052,6 +2024,8 @@ extern I_ required_thread_count;
 }
 
 #endif  /* GRAN */ 
+
+#endif /* CONCURRENT */
 \end{code}
 
 The following seq# code should only be used in unoptimized code.
@@ -2086,7 +2060,6 @@ ED_RO_(vtbl_seq);
     r = 1; /* Should be unnecessary */     \
   })
 
-#endif /* CONCURRENT */
 \end{code}
 
 %************************************************************************
@@ -2136,18 +2109,20 @@ do {                                                     \
   ForeignObj_CLOSURE_LINK(result) = StorageMgrInfo.ForeignObjList; \
   StorageMgrInfo.ForeignObjList = result;                         \
                                                        \
-/*                                                     \
-  printf("DEBUG: ForeignObj(0x%x) = <0x%x, 0x%x, 0x%x, 0x%x>\n",       \
+                                                       \
+ /*fprintf(stderr,"DEBUG: ForeignObj(0x%x) = <0x%x, 0x%x, 0x%x, 0x%x>\n",      \
       result,                                          \
       result[0],result[1],                             \
-      result[2],result[3]);                            \
-*/                                                     \
+      result[2],result[3]);*/                          \
+                                                       \
   CHECK_ForeignObj_CLOSURE( result );                  \
   VALIDATE_ForeignObjList( StorageMgrInfo.ForeignObjList ); \
                                                        \
   (r) = (P_) result;                                   \
 } while (0)
 
+#define writeForeignObjZh(res,datum)   ((PP_) ForeignObj_CLOSURE_DATA(res)) = ((P_)datum)
+
 #else
 #define makeForeignObjZh(r, liveness, mptr, finalise)              \
 do {                                                               \
@@ -2156,6 +2131,13 @@ do {                                                                 \
     EXIT(EXIT_FAILURE);                                                    \
 } while(0)
 
+#define writeForeignObjZh(res,datum)   \
+do {                                                               \
+    fflush(stdout);                                                \
+    fprintf(stderr, "writeForeignObj#: no foreign object support.\n");\
+    EXIT(EXIT_FAILURE);                                                    \
+} while(0)
+
 #endif /* !PAR */
 \end{code}