Add m-esr52 at 52.6.0

1 files changed, 97 insertions, 0 deletions

diff --git a/xpcom/reflect/xptcall/md/unix/xptcinvoke_ppc64_linux.cpp b/xpcom/reflect/xptcall/md/unix/xptcinvoke_ppc64_linux.cpp
new file mode 100644
index 000000000..c93dc4621
--- /dev/null
+++ b/xpcom/reflect/xptcall/md/unix/xptcinvoke_ppc64_linux.cpp
@@ -0,0 +1,97 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Platform specific code to invoke XPCOM methods on native objects
+
+// The purpose of NS_InvokeByIndex() is to map a platform
+// independent call to the platform ABI. To do that,
+// NS_InvokeByIndex() has to determine the method to call via vtable
+// access. The parameters for the method are read from the
+// nsXPTCVariant* and prepared for the native ABI.
+
+// The PowerPC64 platform ABI can be found here:
+// http://www.freestandards.org/spec/ELF/ppc64/
+// and in particular:
+// http://www.freestandards.org/spec/ELF/ppc64/PPC-elf64abi-1.9.html#FUNC-CALL
+
+#include <stdio.h>
+#include "xptcprivate.h"
+
+// 8 integral parameters are passed in registers, not including 'that'
+#define GPR_COUNT     7
+
+// 8 floating point parameters are passed in registers, floats are
+// promoted to doubles when passed in registers
+#define FPR_COUNT     13
+
+extern "C" uint32_t
+invoke_count_words(uint32_t paramCount, nsXPTCVariant* s)
+{
+    return uint32_t(((paramCount * 2) + 3) & ~3);
+}
+
+extern "C" void
+invoke_copy_to_stack(uint64_t* gpregs,
+                     double* fpregs,
+                     uint32_t paramCount,
+                     nsXPTCVariant* s, 
+                     uint64_t* d)
+{
+    uint64_t tempu64;
+
+    for(uint32_t i = 0; i < paramCount; i++, s++) {
+        if(s->IsPtrData())
+            tempu64 = (uint64_t) s->ptr;
+        else {
+            switch(s->type) {
+            case nsXPTType::T_FLOAT:                                  break;
+            case nsXPTType::T_DOUBLE:                                 break;
+            case nsXPTType::T_I8:     tempu64 = s->val.i8;            break;
+            case nsXPTType::T_I16:    tempu64 = s->val.i16;           break;
+            case nsXPTType::T_I32:    tempu64 = s->val.i32;           break;
+            case nsXPTType::T_I64:    tempu64 = s->val.i64;           break;
+            case nsXPTType::T_U8:     tempu64 = s->val.u8;            break;
+            case nsXPTType::T_U16:    tempu64 = s->val.u16;           break;
+            case nsXPTType::T_U32:    tempu64 = s->val.u32;           break;
+            case nsXPTType::T_U64:    tempu64 = s->val.u64;           break;
+            case nsXPTType::T_BOOL:   tempu64 = s->val.b;             break;
+            case nsXPTType::T_CHAR:   tempu64 = s->val.c;             break;
+            case nsXPTType::T_WCHAR:  tempu64 = s->val.wc;            break;
+            default:                  tempu64 = (uint64_t) s->val.p;  break;
+            }
+        }
+
+        if (!s->IsPtrData() && s->type == nsXPTType::T_DOUBLE) {
+            if (i < FPR_COUNT)
+                fpregs[i]    = s->val.d;
+            else
+                *(double *)d = s->val.d;
+        }
+        else if (!s->IsPtrData() && s->type == nsXPTType::T_FLOAT) {
+            if (i < FPR_COUNT) {
+                fpregs[i]   = s->val.f; // if passed in registers, floats are promoted to doubles
+            } else {
+                float *p = (float *)d;
+#ifndef __LITTLE_ENDIAN__
+                p++;
+#endif
+                *p = s->val.f;
+            }
+        }
+        else {
+            if (i < GPR_COUNT)
+                gpregs[i] = tempu64;
+            else
+                *d = tempu64;
+        }
+        if (i >= 7)
+            d++;
+    }
+}
+
+EXPORT_XPCOM_API(nsresult)
+NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
+                   uint32_t paramCount, nsXPTCVariant* params);
+