Fix crashes on ia64 Linux when a method with more than 7 arguments is called

through XPCOM.  Bug 291378, patch by David Mosberger <davidm@hpl.hp.com>,
r+sr+a=shaver

xpcom/reflect/xptcall/public/genstubs.pl

@@ -44,7 +44,7 @@ for($i = 0; $i < $entry_count; $i++) {
 }
 print OUTFILE "#else\n";
 for($i = 0; $i < $entry_count; $i++) {
-    print OUTFILE "NS_IMETHOD Stub",$i+3,"(PRUint64,\n";
+    print OUTFILE "NS_IMETHOD Stub",$i+3,"(PRUint64,PRUint64,\n";
     print OUTFILE " PRUint64,PRUint64,PRUint64,PRUint64,PRUint64,PRUint64);\n";
 
 }

xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ipf32.s

@@ -15,15 +15,17 @@
         .type   PrepareAndDispatch,@function
 
 SharedStub::
-// 9 arguments, first 8 are the input arguments of previous
-// function call.  The last one is methodIndex, and is passed in memory
+// 10 arguments, first 8 are the input arguments of previous
+// function call.  The 9th one is methodIndex and the 10th is the
+// pointer to the remaining input arguments.  The last two arguments
+// are passed in memory.
         .prologue
         .save ar.pfs , r41
 // allocate 8 input args, 4 local args, and 5 output args
         alloc           r41 = ar.pfs, 8, 4, 5, 0   // M
         .save rp, r40
         mov             r40 = rp                   // I
-        nop.i           0                       ;; // I
+        addp4		out4 = 28, sp           ;; // I
 
         .save ar.unat, r42
         mov             r42 = ar.unat              // M
@@ -46,12 +48,9 @@ SharedStub::
         .body
         add             out0 = 0, in0        // A  move self ptr
 // 144 bytes = 16 byte stack header + 64 byte int space + 64 byte float space
-// current frame is 144 bytes, previous frame is 112 bytes
-// restarg is at 144 + 112 + 16 bytes away from current sp
-// (current frame + previous frame + previous previous frame header)
 // methodIndex is at 144 + 16 bytes away from current sp
 // (current frame + previous frame header)
-        add             out4 = 192, sp       // A  restarg address
+        ld4             out4 = [out4]        // A  restarg address
         add             r11  = 160, sp    ;; // A  address of methodIndex
 
         ld8             out1 = [r11]         // M  load methodIndex

xpcom/reflect/xptcall/src/md/unix/xptcstubs_asm_ipf64.s

@@ -15,15 +15,17 @@
         .type   PrepareAndDispatch,@function
 
 SharedStub::
-// 9 arguments, first 8 are the input arguments of previous
-// function call.  The last one is methodIndex, and is passed in memory
+// 10 arguments, first 8 are the input arguments of previous
+// function call.  The 9th one is methodIndex and the 10th is the
+// pointer to the remaining input arguments.  The last two arguments
+// are passed in memory.
         .prologue
         .save ar.pfs , r41
 // allocate 8 input args, 4 local args, and 5 output args
         alloc           r41 = ar.pfs, 8, 4, 5, 0   // M
         .save rp, r40
         mov             r40 = rp                   // I
-        nop.i           0                       ;; // I
+        add             out4 = 24, sp           ;; // I
 
         .save ar.unat, r42
         mov             r42 = ar.unat              // M
@@ -46,12 +48,9 @@ SharedStub::
         .body
         add             out0 = 0, in0        // A  move self ptr
 // 144 bytes = 16 byte stack header + 64 byte int space + 64 byte float space
-// current frame is 144 bytes, previous frame is 112 bytes
-// restarg is at 144 + 112 + 16 bytes away from current sp
-// (current frame + previous frame + previous previous frame header)
 // methodIndex is at 144 + 16 bytes away from current sp
 // (current frame + previous frame header)
-        add             out4 = 192, sp       // A  restarg address
+        ld8             out4 = [out4]        // M  restarg address
         add             r11  = 160, sp    ;; // A  address of methodIndex
 
         ld8             out1 = [r11]         // M  load methodIndex

xpcom/reflect/xptcall/src/md/unix/xptcstubs_ipf32.cpp

@@ -162,16 +162,17 @@ PrepareAndDispatch(nsXPTCStubBase* self, PRUint32 methodIndex,
 }
 
 extern "C" int SharedStub(PRUint64,PRUint64,PRUint64,PRUint64,
- PRUint64,PRUint64,PRUint64,PRUint64,PRUint64);
+ PRUint64,PRUint64,PRUint64,PRUint64,PRUint64,PRUint64 *);
 
 /* Variable a0-a7 were put there so we can have access to the 8 input
    registers on Stubxyz entry */
 
 #define STUB_ENTRY(n) \
 nsresult nsXPTCStubBase::Stub##n(PRUint64 a1, \
-PRUint64 a2,PRUint64 a3,PRUint64 a4,PRUint64 a5,PRUint64 a6,PRUint64 a7) \
+PRUint64 a2,PRUint64 a3,PRUint64 a4,PRUint64 a5,PRUint64 a6,PRUint64 a7, \
+PRUint64 a8) \
 { uint64_t a0 = (uint64_t) this; \
- return SharedStub(a0,a1,a2,a3,a4,a5,a6,a7,(PRUint64) n); \
+ return SharedStub(a0,a1,a2,a3,a4,a5,a6,a7,(PRUint64) n, &a8); \
 }
 
 #define SENTINEL_ENTRY(n) \

xpcom/reflect/xptcall/src/md/unix/xptcstubs_ipf64.cpp

@@ -163,16 +163,17 @@ PrepareAndDispatch(nsXPTCStubBase* self, PRUint32 methodIndex,
 }
 
 extern "C" int SharedStub(PRUint64,PRUint64,PRUint64,PRUint64,
- PRUint64,PRUint64,PRUint64,PRUint64,PRUint64);
+ PRUint64,PRUint64,PRUint64,PRUint64,PRUint64,PRUint64 *);
 
 /* Variable a0-a7 were put there so we can have access to the 8 input
    registers on Stubxyz entry */
 
 #define STUB_ENTRY(n) \
 nsresult nsXPTCStubBase::Stub##n(PRUint64 a1, \
-PRUint64 a2,PRUint64 a3,PRUint64 a4,PRUint64 a5,PRUint64 a6,PRUint64 a7) \
+PRUint64 a2,PRUint64 a3,PRUint64 a4,PRUint64 a5,PRUint64 a6,PRUint64 a7, \
+PRUint64 a8) \
 { uint64_t a0 = (uint64_t) this; \
- return SharedStub(a0,a1,a2,a3,a4,a5,a6,a7,(PRUint64) n); \
+ return SharedStub(a0,a1,a2,a3,a4,a5,a6,a7,(PRUint64) n, &a8); \
 }
 
 #define SENTINEL_ENTRY(n) \